Yasutaka Tomomatsu, Nobuyuki Kawahara, Eiji Tomita
Fuel spray impingement and liquid-film formation in a gasoline direct-injection spark-ignition engine
International Journal of Environmental Science and Technology, 20:477-488
https://doi.org/10.1007/s13762-022-04010-4
MD Tanvir KHAN, Nobuyuki Kawahara, Yoshimitsu Kobashi, Towa Hirayama, Ayumi Shimizu, Sekai Miyamoto
Visualization of Combustion and Flow Phenomena in a Methane-Fueled Passive Pre-Chamber Ignited Gas Engine
2023 JSAE/SAE Powertrains, Energy and Lubricants Int. Meeting, JSAE 20239119, SAE 2023-32-0057
Yoshimitsu Kobashi, Kengo Kishimoto, Nobuyuki Kawahara
PREMIER Combustion of Natural Gas Ignited with Diesel Fuel in a Dual Fuel Engine - Effects of EGR and Supercharging on End-gas Auto Ignition and Thermal Efficiency-
2023 JSAE/SAE Powertrains, Energy and Lubricants Int. Meeting, JSAE 20239121, SAE 2023-32-0016
Nobuyuki Kawahara
Droplet diameter and axial velocity measurements near a nozzle exit of an automotive fuel injector using PDA
ILASS-Asia 2023, invited lecture, p.154
Book
Nobuyuki Kawahara,Ulugbek Azimov
Hydrogen for Future Thermal Engines - Abnormal Combustion in Hydrogen-Fuelled IC engine -
Springer, Efstathios-Al. Tingas, et al., pp.459-482
ISBN 978-3-031-28411-3
ISBN 978-3-031-28412-0 (eBook)
https://doi.org/10.1007/978-3-031-28412-0
Taku Imamoto, Nobuyuki Kawahara, Eiji Tomita
PREMIER combustion characteristics of a pilot fuel-ignited dual-fuel biogas engine with consideration of cycle-to-cycle variations
Fuel, Vol.314, 15, 123049
https://doi.org/10.1016/j.fuel.2021.123049
Yuji Ikeda, Nobuyuki Kawahara
Measurement of Cyclic Variation of the Air-to-Fuel Ratio of Exhaust Gas in an SI Engine by Laser-Induced Breakdown Spectroscopy
Energies, 15, 3053
https://doi.org/10.3390/en15093053
Nobuyuki Kawahara, Eiji Tomita
Visualization of End-gas Auto-ignition during PREMIER Combustion in a Dual-fuel Gas Engine
The 10th International Conference on Modeling and Diagnostics for Advanced Engine Systems (COMODIA 2022), C9-3
Yuji Ikeda, Joey Kim Soriano, Nobuyuki Kawahara
Plasma formation and its sustainment in time and space in microwave enhanced laser induced breakdown spectroscopy
20th Int. Symp. on the Application of Laser and Imaging Techniques on Fluid Mechanics (LISBON)
Nobuyuki Kawahara, Kohei Miyao
Spark-induced breakdown spectroscopy in a direct-injected natural gas spark-ignition engine
20th Int. Symp. on the Application of Laser and Imaging Techniques on Fluid Mechanics (LISBON)
Yuji Ikeda, Joey Kim Soriano, Nobuyuki Kawahara, Ikuo Wakaida
Spatially and temporally resolved plasma formation on alumina target in microwave-enhanced laser-induced breakdown spectroscopy
Spectrochimica Acta Part B: Atomic Spectroscopy, 197, 106533
https://doi.org/10.1016/j.sab.2022.106533
Nobuyuki Kawahara
Evaluation of ignition characteristics of diesel spray using large eddy simulation
ILASS-Asia 2022, Paper No. 40
Book
Eiji Tomita, Nobuyuki Kawahara,Ulugbek Azimov
Biogas Combustion Engines for Green Energy Generation
Springer Briefs in Applied Sciences and Technology
ISBN 978-3-030-94537-4, ISBN 978-3-030-94538-1 (eBook)
https://doi.org/10.1007/978-3-030-94538-1
河原伸幸（分担執筆）
技術資料 流体計測法 改訂版
（分担：第6章 混相流（一部））
日本機械学会 ISBN 978-4-88808-326-6 C3053
Alireza V Berenjestanaki, Nobuyuki Kawahara, Kazuya Tsuboi, Eiji Tomita
Performance, emissions and end-gas autoignition characteristics of PREMIER combustion in a pilot fuel-ignited dual-fuel biogas engine with various CO2 ratios
Fuel, Vol.286, Part 2, 119330
Nobuyuki Kawahara
Differences between PREMIER combustion in a dual-fuel gas engine and knocking with pressure oscillations
7th International Seminar on Motor Vehicle Environmental Protection and Supervision Technology(invited)
Nobuyuki Kawahara, Rikuya Yamada, Eiji Tomita
Droplet diameter measurement near a nozzle exit of a common-rail Diesel injector using PDA
ICLASS2021, Paper No. 247
Ahmed Fatma B.M., Nobuyuki Kawahara, Eiji Tomita
Binary collisions and coalescence of droplets in low-pressure fuel injector
Thermal Science, OnLine-First Issue 00, Pages: 185-196
Yasutaka Tomomatsu, Nobuyuki Kawahara, Eiji Tomita
Quantitative evaluation of liquid film formation process from DISI injector using LIF method
ILASS-Asia 2020, ILASS-Asia2020-3-11
Nobuyuki Kawahara, Hirotomo Daido, Eiji Tomita
Multidimensional CFD Simulation of PAH Formation Process in Diesel Spray Combustion
ILASS-Asia 2020, ILASS-Asia2020-3-12
Nobuyuki Kawahara, Yungjin Kim, Hisashi Wadahama, Kazuya Tsuboi, Eiji Tomita
Differences between PREMIER combustion in a natural gas spark-ignition engine and knocking with pressure oscillations
Proceedings of the Combustion Institute, 37, pp.4983-4991.
Eiji Tomita, Yuya Kubota, Nobuyuki Kawahara, Kazuya Tsuboi,Ken Miyauchi,Morio Kondo
Evaluation of Combustion Characteristics of Ultra Low Sulphur Fuel Oil by Using OCA (Optical Combustion Analyzer) and Performance and Exhaust Emissions in a Two Stroke Diesel Engine
CIMAC 2019, 2016-181.
Nobuyuki Kawahara, Eiji Tomita
3D CFD of Auto-ignition at the End Gas Region in Dual-fuel Gas Engine
ASPACC2019, 2019-1211.
Yusei Naka, Kazuya Tsuboi, Eiji Tomita, Tatsuya Hasegawa
Influence of Particle Diameter on Numerical PIV Measurement Using DNS Data of Turbulent Premixed Flame
The Proceedings of 12th Asia-Pacific Conference on Combustion, ASPACC2019-1469.
Nobuyuki Kawahara, Masanobu Watanabe, Eiji Tomita, Yukihide Nagano, Toshiaki Kitagawa
Plasma Temperature of Spark Discharge in a Lean-burn Spark-ignition Engine Using a Time Series of Spectra Measurements
JSAE/SAE 2019 International Powertrains, Fuels and Lubricants Meeting, JSAE20199125 / SAE2019-01-2158
Masakuni Oikawa, Yasuo Takagi, Yuji Mihara, Nobuyuki Kawahara, Eiji Tomita, Ken Naitoh
Attainment of High Thermal Efficiency and Near-zero Emissions by Optimizing Injected Spray Configuration in Direct Injection Hydrogen Engines
JSAE/SAE 2019 International Powertrains, Fuels and Lubricants Meeting, JSAE20199321 / SAE2019-01-2306
Alireza V Berenjestanaki, Nobuyuki Kawahara, Kazuya Tsuboi, Eiji Tomita
End-gas autoignition characteristics of PREMIER combustion in a pilot fuel- ignited dual-fuel biogas engine
Fuel, 254, 115634, https://doi.org/10.1016/j.fuel.2019.115634
Nobuyuki Kawahara, Bunta Mori, Eiji Tomita
Droplet diameter distribution measurement of a gasoline DISI injector using PDA
ILASS-Asia 2019, ILASS-Asia2019-064.
Fatma B. M. Ahmed, Mohamed F. C. Esmail, Nobuyuki Kawahara, Eiji Tomita
CO2 Concentration Measurements inside Expansion-Compression Engine Under High EGR Conditions using an Infrared Absorption Method
Ain Shams Engineering Journal,11, 787-793
Kazi Mostafijur Rahman, Nobuyuki Kawahara, Eiji Tomita
Experimental and Numerical Analysis of Laser-ignition of Wet Ethanol with Elevated Water Content
International Journal of Automotive Engineering and Technologies, Vol. 8, No. 2, pp. 61-69
Apoorv Talekar, Ming-Chia Lai, Eiji Tomita, Nobuyuki Kawahara, Ke Zeng, Bo Yang
Numerical Investigation of Natural Gas-Diesel Dual Fuel Engine with End Gas Ignition
SAE World congress, SAE paper No. 2018-01-0199
Nobuyuki Kawahara, Hiroki Tani, Eiji Tomita, Yasuo Takagi, Yuji Mihara
Spark-induced breakdown spectroscopy (SIBS) in a hydrogen spark-ignition engine
19th Int. Symp. on the Application of Laser and Imaging Techniques on Fluid Mechanics (LISBON), ENGINE II-1
Nobuyuki Kawahara, Bunta Mori, Eiji Tomita
Droplet Diameter Measurement Near A Nozzle Exit of A Gasoline Disi Injector Using PDA
ICLASS 2018, 14th Triennial International Conference on Liquid Atomization and Spray Systems, Paper:191
Book
Ulugbek Azimov, Nobuyuki Kawahara, Kazuya Tsuboi, Eiji Tomita
Natural Gas Engines For Transportation and Power Generation - Advanced Combustion in Natural Gas-Fueled Engines -
Springer, Kalyan Kumar Srinivasan, et al., pp 215-250, Online ISBN: 978-981-13-3307-1, https://doi.org/10.1007/978-981-13-3307-1
Nobuyuki Kawahara, Shota Hashimoto, Eiji Tomita
Spark discharge ignition process in a spark-ignition engine using a time series of spectra measurements
Proceedings of the Combustion Institute, 36, pp.3451-3458
Nobuyuki Kawahara, Kyohei Kintaka, Eiji Tomita High-speed visualization of fuel spray impingement in the near-wall region using a DISI injector
Proc. SPIE 10328, Selected Papers from the 31st International Congress on High-Speed Imaging and Photonics, 1032817 (February 20, 2017); doi:10.1117/12.2270691
Nearchos Stylianidis, Ulugbek Azimov, Alireza Maheri, Nobuyuki Kawahara, Eiji Tomita Chemical kinetics and CFD analysis of supercharged micro-pilot ignited dual-fuel engine combustion of syngas
Fuel, 203, 591-606
Ulugbek Azimov, Nearchos Stylianidis, Nobuyuki Kawahara, Eiji Tomita
Characterisation of DME-HCCI combustion cycles for formaldehyde and hydroxyl UV-vis absorption
Fuel, 210, 578-591
Yasuo Takagi, Hiroki Mori, Yuji Mihara, Nobuyuki Kawahara. Eiji Tomita
Improvement of thermal efficiency and reduction of NOx emissions by burning a controlled jet plume in high-pressure direct-injection hydrogen engines
International Journal of Hydrogen Energy, 42, 41, 26114-26122
Hiroshi Sakurai, Nobuyuki Kawahara, Masayoshi Itou, Eiji Tomita, Kosuke Suzuki, Yoshiharu Sakurai
Novel Noncontact Measurement Method of Combustion Gas Using X-rays
BIT's 5th Annual Congress of AnalytiX-2017 (Invited lecture)
Nobuyuki Kawahara, Norihiro Takeda, Eiji Tomita
Multidimensional CFD Simulation of Diesel Spray Combustion Using Chemical Kinetics
The 9th International Conference on Modeling and Diagnostics for Advanced Engine Systems (COMODIA 2017), B103, 1-7
Nearchos Stylianidis, Ulugbek Azimov, Nobuyuki Kawahara, Eiji Tomita
Chemical Kinetics and Computational Fluid-Dynamics Analysis of H2/CO/CO2/CH4 Syngas Combustion and NOx Formation in a Micro-Pilot-Ignited Supercharged Dual Fuel Engine
13th International Conference on Engine&Vehicles, SAE paper No. 2017-24-0027
Kazuya Tsuboi, Takahiro Tomeda, Eiji Tomita, Tatsuya Hasegawa
Construction of Numerical Measurement Using DNS Data of Turbulent Premixed Flames
The Ninth JSME-KSME Thermal and Fluids Engineering Conference, TFEC9-1540.
Nobuyuki Kawahara, Shuhei Takada, Eiji Tomita
Evaluation of Nozzle Exit Model for Transient Spray in a Multi-hole DISI injector
19th Annual Conference on Liquid Atomization and Spray Systems-Asia (ILASS-Asia 2017), D-3-2
Book
Nobuyuki Kawahara
The Micro-World Observed by Ultra High-Speed Cameras (Visualization of Combustion Processes of Internal Combustion Engines)
Springer, Kinko Tsuji, et al., pp.261-275., ISBN 978-3-319-61491-5, DOI 10.1007/978-3-319-61491-5
Kazi Mostafijur Rahman, Nobuyuki Kawahara, Kazuya Tsuboi, Eiji Tomita
Combustion Characteristics of Wet Ethanol Ignited Using a Focused Q-Switched Nd:YAG Nanosecond Laser
Fuel, 165, 331-340.
Hiroshi Sakurai, Nobuyuki Kawahara, Masayoshi Itou, Eiji Tomita, Kosuke Suzuki, Yoshiharu Sakurai
Densitometry and temperature measurement of combustion gas by X-ray Compton scattering
Journal of Synchrotron Radiation, 23, 617-621.
Kazi Mostafijur Rahman, Nobuyuki Kawahara, Daichi Matsunaga, Eiji Tomita, Yasuo Takagi, Yuji Mihara
Local fuel concentration measurement through spark-induced breakdown spectroscopy in a direct-injection hydrogen spark-ignition engine
International Journal of Hydrogen Energy, 41-32, 14283-14292.
Yungjin Kim, Nobuyuki Kawahara, Kazuya Tsuboi, Eiji Tomita
Combustion characterustucs and NOx emissions of biogas fuels with various CO2 contents in a micro co-generation soark-ignition engine
Applied Energy, 182, 539-547.
Cagdas Aksu, Nobuyuki Kawahara, Kazuya Tsuboi, Morio Kondo, Eiji Tomita
Extension of PREMIER combustion operation range using split micro pilot fuel injection in a dual fuel natural gas compression ignition engine: A performance-based and visual investigation
Fuel, 185, 243-253
Ulugbek Azimov, Nobuyuki Kawahara, Eiji Tomita
Quantum cascade laser assisted time-resolved measurements of carbono dioxide absorption during combustion in DME-hcci engine
Fuel, 182, 807-815
Nobuyuki Kawahara, Eiji Tomita,, Yasuo Takagi,, Yuji Mihara
Local air-fuel ratio measurement using spark-induced breakdown spectroscopy (SIBS) in a hydrogen DISI engine
IFAT 2016, invited lecture
Nobuyuki Kawahara
Temporally and spectrally resolved measurement of spark discharge in a spark ignition engine
LIC 2016, LIC2-4(invited)
Nobuyuki Kawahara, Shota Hashimoto, Eiji Tomita
Plasma temperature of spark discharge in a spark-ignition engine using a time series of spectra measurements
18th Int. Symp. on Application of Laser Techniques on Fluid Mechanics (LISBON), 4-1-2
Nobuyuki Kawahara, Kyohei. Kintaka, Eiji Tomita
High-speed visualization of fuel spray impingement in the near-wall region using a DISI injector
31st international Congress on High-Speed Imaging and Photonics, 2C-A01, p. 123
Nobuyuki Kawahara, Eiji Tomita
Droplet diameter measurement near a nozzle exit of a gasoline DISI injector
18th Annual Conference on Liquid Atomization and Spray Systems-Asia (ILASS-Asia 2016), 118
Md Tasyrif Abdul Rahman, Nobuyuki Kawahara, Kazuya Tsuboi, Eiji Tomita
Effect of ambient pressure on local concentration measurement of transient hydrogen jet in a constant-volume vessel using spark-induced breakdown spectroscopy
International Journal of Hydrogen Energy, 40, pp.4717-4725
Kazi Mostafijur Rahman, Nobuyuki Kawahara, Kazuya Tsuboi, Eiji Tomita
Experimental Study on Combustion Characteristics of Wet Ethanol Ignited by Laser-Induced Breakdown
The 3rd Laser Ignition Conference, W3A.2
Nobuyuki Kawahara
Visualization of Spark Discharge in Spark-Ignition Engine Under Different Flow Conditions
6th Engine Researchers Forum in Shanghai, Lecture 11
Kazuya Tsuboi, Shingo Morishita, Eiji Tomita, Tatsuya Hasegawa
Evaluation of Experimental Measurement and Analysis on the Flame Displacement Speed Using DNS Data of Turbulent Premixed Flames
The 10th Asia-Pacific Conference on Combustion, 223.
N. Kawahara, M. Inoue,E. Tomita
Visualization of fuel impingement on the piston top in a DISI engine
ICLASS2015, B1-1-041
Yungjin Kim, N. Kawahara E. Tomita, H. Oshibe , K. Nishikawa
Effect of Bio-gas Contents on SI Combustion for a Co-generation Engine
SAE 2015 Powertrains, Fuels&Lubricants, SAE 2015-01-1946 (JSAE 20159094)
Cagdas Aksu, N. Kawahara, K. Tsuboi, S. Nanba, E. Tomita, M. Kondo
Effect of Hydrogen Concentration on Engine Performance, Exhaust Emissions and Operation Range of PREMIER Combustion in a Dual Fuel Gas Engine Using Methane-Hydrogen Mixtures
SAE 2015 Powertrains, Fuels&Lubricants, SAE 2015-01-1792 (JSAE 20159176)
Nobuyuki Kawahara, Shota Hashimoto, Eiji Tomita
Combustion Diagnostics Using Time-Series Analysis of Radical Emissions in a Practical Engine
Small Engine Technology Conference (SETC) 2015, SAE 2015-32-0748 (JSAE 20159748)
Nobuyuki Kawahara, Kazuya Tsuboi, Eiji Tomita
Laser-induced plasma generation and evolution in a transient spray
Optics Express, 22-S1, A44-A52
Robert Kiplimo, Eiji Tomita, Nobuyuki Kawahara, Sumito Yokobe
Combustion and Emission Characteristics of a Premixed Charge Compression Ignition Engine
Journal of Sustainable Research in Engineering Vol. 1 (1) 2014, 8-16
Md Tasyrif Abdul Rahman, Nobuyuki Kawahara, Kazuya Tsuboi, Eiji Tomita
Visualization and Concentration Measurement of a Direct-Injection Hydrogen Jet in a Constant-Volume Vessel Using Spark-Induced Breakdown Spectroscopy
International Journal of Hydrogen Energy, 39, pp.17896-17905
Kazuya Tsuboi, Ryoji Matsugi, Eiji Tomita
Evaluation of the Local Burning Velocity Using DNS Data of Turbulent Premixed Flames
Natural Science, Vol. 6, No. 12, (2014), pp.1030-1036.
Kazuya Tsuboi, Shingo Morishita, Eiji Tomita
Consideration on the Flow Velocity in the Experimental Analysis of the Flame Displacement Speed Using DNS Data of Turbulent Premixed Flames with Different Lewis Numbers
Open Journal of Fluid Dynamics, Vol. 4, No. 3, (2014), pp.278-287.
Kazuya Tsuboi, Eiji Tomita
DNS Analysis on the Indirect Relationship between the Local Burning Velocity and the Flame Displacement Speed of Turbulent Premixed Flames
Open Journal of Fluid Dynamics, Vol. 4, No. 3, (2014), pp.288-297.
Kazi Mostafijur Rahman, N. Kawahara, K. Tsuboi, E. Tomita
Laser Ignition Characteristics of Hydrous Ethanol
The 2nd Laser Ignition Conference, LIC3-5
N. Kawahara, A. Inoue, E. Tomita
Time-series Spectra Measurements from Initial Flame Kernel in a Spark-Ignition Engine
17th Int. Symp. on Application of Laser Techniques on Fluid Mechanics, session 4-7.
Mithun Kanti Roy, Nobuyuki Kawahara, Eiji Tomita, Takashi Fujitani
Jet-guided combustion characteristics and local fuel concentration measurements in a hydrogen direct-injection spark-ignition engine
Proceedings of Combustion Institute, 34, No.2, pp.2977-2984
Eiji Tomita
Application of Plasma-Assisted Combustion to Internal Combustion Engine
The 1st Laser Ignition Conference, No.LIC8-1, pp.1-3
Nobuyuki Kawahara, Eiji Tomita
Interaction between laser-induced plasma and fuel spray
The 1st Laser Ignition Conference, No.LIC8-3, pp.1-2
Eiji Tomita, Nobuyuki Kawahara, Koichi Kawato,Kazuhiro Morinaka, Yoshiro Yamamoto
Flame Temperature and Soot Concentration of Single Spray Flame of Bunker Fuel Oil in OCA (Optical Combustion Analyzer) Using Two- Color Method
27th CIMAC World Congress on Combustion Engine Technology, No.No.243, pp.1-7
Eiji Tomita, Nobuyuki Kawahara, Morio Kondo, Yuta Sunada
Combustion and Exhaust Emissions Characteristics of Pilot-Ignited Engine Fueled with Digester Gas
27th CIMAC World Congress on Combustion Engine Technology, No.No.145, pp.1-4
Kazuya Tsuboi, Eiji Tomita, Tatsuya Hasegawa* (*Nagoya University)
Chemical Effects on Turbulent Premixed Flames nearby a Wall Surface
24th ICDERS (ICDERS2013), No.No.187, pp.1-6
Zhongquan Gao, Xiaomin Wu, Zuohua Huang, Sadami Yoshiyama, Eiji Tomita, Kazuki Yamazaki and Taro Higashi
The interdependency between the maximal pressure and ion current in a spark-ignition engine
International Journal of Engine Research, 14, No.4, pp.320-332
Md Tasyrif bin Abdul Rahman, Nobuyuki Kawahara and Eiji Tomita
Mixing Process of Direct Injection Hydrogen Jet in a Constant Volume Vessel by Using Spark-Induced Breakdown Spectroscopy
SAE/KSAE 2013 International Powertrains, Fuels and Lubricants Meeting, No.Paper No. 2013-01-2526, pp.1-10
Nobuyuki Kawahara, Atsushi Inoue and Eiji Tomita
In-Cylinder Observations of Chemiluminescence in Turbulent Premixed Flames Using a Spark Plug Sensor with an Optical Fiber
SAE/KSAE 2013 International Powertrains, Fuels and Lubricants Meeting, No.Paper No. 2013-01-2578, pp.1-2
Book
Ulugbek Azimov, Eiji Tomita and Nobuyuki Kawahara
Chapter 2: Combustion and Exhaust Emission Characteristics of Diesel Micro-Pilot Ignited Dual-Fuel Engine in "Diesel Engine -Combustion, Emissions and Condition Monitoring" edited by Saiful Bari
InTech (Open Access), pp.33-52, 9789535111207
Ulugbek Azimov, Nobuyuki Kawahara, Eiji Tomita,
UV-visible light absorption by hydroxyl and formaldehyde and knocking combustion in a DME-HCCI engine,
Fuel, Vol.98 (2012), 164-175
Robert Kiplimo, Eiji Tomita, Nobuyuki Kawahara, Sumito Yokobe,
Effects of spray impingement, injection parameters, and EGR on the combustion
and emission characteristics of a PCCI diesel engine,
Applied Thermal Engineering, Vol.37, (2012), pp.165-175.
Mithun Kanti Roy, Nobuyuki Kawahara, Eiji Tomita, Takashi Fujitani,
Effect of Equivalence Ratio on Combustion Characteristics
in a Hydrogen Direct-Injection SI Engine,
4th International Conference on Sustainable Automotive Technologies (ICSAT2012)
(Melbourne, Australia), (2012), P2.1, pp.1-8.
Robert Kiplimo, Eiji Tomita, Nobuyuki Kawahara, Sumito Yokobe,
Low Sooting Combustion in a PCCI Diesel Engine with Moderately Early Injection Timing,
The 8th KSME-JSME Thermal and Fluids Engineering Conference (Incheon, Korea), (2012),
FR02-001, pp.1-4.
Nobuyuki Kawahara, Mithun Kanti Roy, Takashi Fujitani, Eiji Tomita,
Effect of Spark Timing on Combustion Characteristics in a Direct-Injection Hydrogen Engine,
The 8th KSME-JSME Thermal and Fluids Engineering Conference (Incheon, Korea), (2012),
FR02-011, pp.1-2.
Kazuya Tsuboi, Tatsuya Hasegawa,
DNS including the Chemical Process on a Solid Surface in Turbulent Premixed Flames,
The 8th KSME-JSME Thermal and Fluids Engineering Conference (Incheon, Korea), (2012),
GST04-012, pp.1-4.
Robert Kiplimo, Eiji Tomita, Nobuyuki Kawahara and Sumito Yokobe,
Combustion and Emission Characteristics of a Low Emission
and Highly Efficient PCCI Diesel Engine,
Sustainable Research and Innovation Conference 2012 at JKUAT, (2012), pp.1-7.
Eiji Tomita,
Combustion Characteristics of Biomass Gas in a Dual-Fuel Engine,
Sustainable Research and Innovation Conference 2012 at JKUAT, (Invited lecture),
(Nairobi, Kenya)(2012).
Nobuyuki Kawahara, Eiji Tomita, Shinya Nakamura,
Laser-Induced Plasma Generation and Evolution in a Transient Spray,
16th Int. Symp. on Application of Laser Techniques on Fluid Mechanics, Session 2-10 (2012).
Robert Kiplimo, Eiji Tomita, Nobuyuki Kawahara and Sumito Yokobe,
Spectrum Analysis of Chemiluminescence of a Low Sooting PCCI Diesel Engine
Operating with Moderately Early Injection Timing,
The 8th International Conference on Modeling and Diagnostics for Advanced Engine Systems
(COMODIA2012), (2012), pp.410-415.
Nobuyuki Kawahara, Eiji Tomita, Takuya Kadowaki,
Mixture-formation Process of Ethanol-blended Gasoline in a Spark-ignition Engine,
The 34th International Symposium on Combustion, (Warsaw, Poland),
3B03, PROCI-D-12-00003R1 (2012).
Mithun Kanti Roy, Nobuyuki Kawahara, Eiji Tomita, Takashi Fujitani,
Jet-guided combustion characteristics and local fuel concentration measurements
in a hydrogen direct-injection spark-ignition engine,
The 34th International Symposium on Combustion, (Warsaw, Poland), 3B07, PROCI-2183 (2012).
E. Tomita, N. Kawahara, Y. Sunada, M. Kondo,
Spectroscopic analysis of premixed mixture ignition in the end-gas region (PREMIER)
combustion in a dual-fuel engine,
The 34th International Symposium on Combustion, Work in Progress, W2P011 (2012).
N. Kawahara, E. Tomita, M. Yagi,
Time-series measurement of CO2 concentration inside an engine cylinder
using infrared absorption method,
The 34th International Symposium on Combustion, Work in Progress, W2P012 (2012).
Kazuya Tsuboi, Tatsuya Hasegawa,
DNS analysis on correlation between local burning velocity and flame displacement speed
of turbulent premixed flames,
The 34th International Symposium on Combustion, Work in Progress, W4P117 (2012).
Nobuyuki Kawahara, Eiji Tomita, Hiroya Okano,
Simultaneous Measurement of Evaporating Droplet Diameter Using Phase Doppler Anemometry
and High-speed Camera,
12th International Conference on Liquid Atomization and Spray Systems (ICLASS2012),
(2012), pp.1-8.
Roy, M., Kawahara, N., Tomita, E., Fujitani, T.,
High-Pressure Hydrogen Jet and Combustion Characteristics
in a Direct-Injection Hydrogen Engine,
SAE International Journal of Fuels and Lubricants, Vol.5, No.3, (2012), pp.1414-1425,
Paper No.2011-01-2003.
Reviews
Eiji Tomita,
The 8th KSME-JSME Thermal and Fluids Engineering Conference
March 18-21, 2012, Incheon, Korea,
The International Information Center for Multiphase Flow NEWSLETTER,
The Japanese Society for Multiphase Flow, No. 38, (2012.5), pp.1-2.
Kawahara, N. and Tomita, E.,
In situ CO2 Concentration Measurement inside a Combustion Chamber
Using Infrared Laser Absorption Technique,
49th AIAA Aerospace Sciences Meeting including the New Horizons Forum
and Aerospace Exposition, AIAA Paper, (2011), No.AIAA-2011-689.
Kawahara, N., Tomita, E., Ohtsuki, A, Aoyagi, Y.,
Cycle-resolved residual gas concentration measurement inside a heavy-duty diesel engine
using infrared laser absorption,
Proceedings of the Combustion Institute, Vol.33, No.2, (2011), pp.2903-2910.
Kazuya Tsuboi, Tatsuya Hasegawa,
DNS analysis on local burning velocity and flame displacement speed
of turbulent premixed flames with different density ratio,
Proceedings of the ASME/JSME 8th Thermal Engineering Joint Conference, (2011),
AJTEC2011-44294.
Kazuya Tsuboi and Tatsuya Hasegawa,
An Analysis on Local Burning Velocity and Flame Displacement Speed Using DNS Database,
13th International Conference on Numerical Combustion, Corfu, (CP143), (2011).
Murari Mohon Roy, Eiji Tomita, Nobuyuki Kawahara, Yuji Harada, Atsushi Sakane,
Comparison of performance and emissions of a supercharged dual-fuel engine
fueled by hydrogen and hydrogen-containing gaseous fuels,
International Journal of Hydrogen Energy, Vol.36, Issue 12, (2011), pp.7339-7352.
Ulugbek Azimov, Eiji Tomita, Nobuyuki Kawahara,
Ignition, Combustion and Exhaust Emission Characteristics of
Micro-pilot Ignited Dual-fuel Engine Operated under PREMIER Combustion Mode,
2011 JSAE/SAE Powertrains, Fuels and Lubricants Meeting, (Kyoto), (2011),
Paper No. JSAE 20119251 (SAE 2011-01-1764).
Robert Kiplimo, Eiji Tomita, Nobuyuki Kawahara, Shiyu Zhou, Sumito Yokobe,
Effects of Injection Pressure, Timing and EGR on Combustion and Emissions Characteristics
of Diesel PCCI Engine,
2011 JSAE/SAE Powertrains, Fuels and Lubricants Meeting, (Kyoto), (2011),
Paper No. JSAE 20119226 (SAE 2011-01-1769).
Mithun Kanti Roy, Nobuyuki Kawahara, Eiji Tomita, Fujitani Takashi,
High-PressureHydrogen Jet and Combustion Characteristics
in a Direct-Injection Hydrogen Engine,
2011 JSAE/SAE Powertrains, Fuels and Lubricants Meeting, (Kyoto), (2011),
Paper No. JSAE 20119144 (SAE 2011-01-2003).
E. Tomita, U.Azimov,N. Kawahara,
PREMIER combustion - auto-ignition of end gas region without pressure oscillation,
Proceedings of Thirty-Third Task Leaders Meeting,
International Energy Agency Implementing Agreement on Energy Conservation
and Emissions Reduction in Combustion,
IEA Task Leaders Meeting - HCCI fuel, (Lund, Sweden), (2011), pp.34-39.
E. Tomita, N.Kawahara, M. K. Roy,
High-Pressure Hydrogen Jet and Combustion Characteristics
in a Direct-Injection Hydrogen Engine,
Proceedings of Thirty-Third Task Leaders Meeting,
International Energy Agency Implementing Agreement on Energy Conservation
and Emissions Reduction in Combustion,
IEA Task Leaders Meeting - Hydrogen ICE, (Lund, Sweden), (2011), pp.141-146.
Kawahara, N.,
High-speed Visualization of Liquid Break-up Phenomena and Laser Ignition at Transient Spray,
ILASS-Korea 2011, Invited Lecture, (2011), pp.21-31.
Eiji Tomita,
Combustion Characteristics of Diesel Fuel Including Bunker Fuel Oil
Using Optical Combustion Analyzer (OCA),
Marine Tech Summit 2011, (Busan, Korea), (2011).
E. Tomita, K. Kawato, Y. Yamamoto, K. Morinaka,
Ignitibility, Combustibility and After-Burning Characteristics of Bunker Fuel Oil
Utilized with Optical Combustion Analyzer (OCA) ,
Proceedings of the International Symposium on Marine Engineering (ISME), (Kobe), (2011), D1-3.
Ulugbek Azimov, Eiji Tomita, Nobuyuki Kawahara, Yuji Harada,
Effect of syngas composition on combustion and exhaust emission characteristics
in a pilot-ignited dual-fuel engine operated in PREMIER combustion mode,
International Journal of Hydrogen Energy, Vol.36, Issue 18, (2011), pp.11985-11996.
Ulugbek Azimov, Masahiro Okuno, Kazuya Tsuboi, Nobuyuki Kawahara, Eiji Tomita,
Multidimensional CFD simulation of syngas combustion
in a micro-pilot-ignited dual-fuel engine using a constructed chemical kinetics mechanism,
International Journal of Hydrogen Energy, Vol.36, Issue 21, (2011), pp.13793-13807.
Ulugbek AZIMOV, Nobuyuki KAWAHARA, Eiji TOMITA, Yuji HARADA,
Premixed mixture ignition in the end-gas region (PREMIER) combustion
in a natural gas dual-fuel engine: operating range and exhaust emissions,
International Journal of Engine Research, Vol.12, No.5, (2011), pp.484-497.
Nobuyuki Kawahara, Eiji Tomita, Shinya Nakamura,
Ignition Characteristics in Transient Spray by Laser-Induced Plasma,
International Gas Turbine Congress 2011 Osaka (IGTC’11 Osaka), (2011), #223.
Robert KIPLIMO, Eiji TOMITA, Nobuyuki KAWAHARA, Sumito YOKOBE,
Effects of Compression Ratio and EGR on Combustion Characteristics and Exhaust Emissions
of a Diesel PCCI Engine,
Journal of Thermal Science and Technology, Vol.6, No.3, (2011), pp.463-474.
Murari Mohon Roy, Eiji Tomita, Nobuyuki Kawahara, Yuji Harada, Atsushi Sakane,
An experimental investigation on engine performance and emissions
of a supercharged H2-diesel dual-fuel engine,
International Journal of Hydrogen Energy, Volume 35, Issue 2, (2010), pp.844-853.
Characterization of the Spray of the DISI Multi-hole Injector
by Means of Phase Doppler Anemometer,
Journal of Thermal Science and Technology, Vol.5, No.1, (2010), pp.36-50.
Mohamed Esmail, Nobuyuki Kawahara, Eiji Tomita, Mamoru Sumida,
Direct microscopic image and measurement of the atomization process of a port fuel injector,
Measurement Science and Technology, Vol.21, No.7, (2010), 075403 (11 pages).
Mithun Kanti Roy, Nobuyuki Kawahara, Eiji Tomita,
Visualization of Knocking Combustion in a Hydrogen Spark-Ignition Engine,
18th World Hydrogen Energy Conference 2010 - WHEC2010 :Parallel Sessions Book 6:
Stationary Applications / Transportation Applications / Detlef Stolten, Thomas Grube (Ed.)
Forschungszentrum Julich GmbH, Zentralbibliothek, Verlag, Vol. 78-6, (2010), pp.141-148
Eiji Tomita, Akihiko Yamaguchi, Tomoya Takeuchi, Yoshio Yamamoto, Kazuhiro Morinaka,
Optical Combustion Analyzer (OCA) for Evaluation of Combustion Characteristics
of Bunker Fuel Oils,
26th CIMAC World Congress on Combustion Engine Technology for Ship Propulsion,
Power Generation, Rail Traction (CIMAC2010)(Bergen), (2010), Paper No.183.
Kawahara, N., Tomita, E., Ohtsuki, A.,
Residual Gas Concentration Measurement inside a Spark-ignition Engine
Using Infrared Laser Absorption Method,
15th Int. Symp. on Application of Laser Techniques on Fluid Mechanics (Lisbon), (2010),
Paper No. 2.8.3, in CD-rom.
Kawahara, N., Tomita, E., Oka, T., Ikeda, Y.,
Fuel Concentration Measurement of Premixed Mixture in a Spark-Ignition Engine
Using Spark-Induced Breakdown Spectroscopy,
15th Int. Symp. on Application of Laser Techniques on Fluid Mechanics (Lisbon), (2010),
Paper No. 2.11.3, in CD-rom.
Eiji Tomita, Nobuyuki Kawahara, Murari Mohon Roy,
Effect of component of biomass-based gaseous fuels on combustion
in a super-charged gas engine with micro-pilot injection,
Proceedings of Thirty-Second Task Leaders Meeting, International Energy Agency Implementing
Agreement on Energy Conservation and Emissions Reduction in Combustion,
IEA Task Leaders Meeting- HCCI fuel(Nara)(2010), pp.138-144
Eiji Tomita, Nobuyuki Kawahara, Jianjun Zheng,
Visualization of Auto-Ignition of End Gas Region without Knock
in a Spark-Ignition Natural Gas Engine,
Journal of KONES Powertrain and Transport, Vol.17, No.4, (2010), pp.521-527.
Nobuyuki Kawahara, Eiji Tomita, Takuya Kadowaki, Tetsuya Honda, Hideaki Katashiba,
In situ fuel concentration measurement near a spark plug
in a spray-guided direct-injection spark-ignition engine using infrared absorption method,
Experiments in Fluids, Vol.49, No.4, (2010), pp.925-936.
Ulugbek AZIMOV, Nobuyuki KAWAHARA, Eiji TOMITA, Kazuya TSUBOI,
Evaluation of the Flame Lift-off Length in Diesel Spray Combustion Based on Flame Extinction,
Journal of Thermal Science and Technology, Vol.5, No.2, (2010), pp.238-251
Kazuya Tsuboi and Tatsuya Hasegawa,
Local burning velocity and flame displacement speed of turbulent premixed flames
using DNS database with different Lewis number,
Proceedings of the 8th Asia-Pacific Conference on Combustion (Hyderabad),(2010), pp.75-78
Eiji Tomita, Nobuyuki Kawahara, Atsushi Sakane,
Knock Characteristics and Combustion Spectroscopy in a Small Natural Gas Engine
Ignited with a Pilot Injection of Gas Oil,
Second International Conference of Energy Engineering (ICEE-2)(Aswan), (2010), p.31
Eiji Tomita, Kawahara Nobuyuki
In situ fuel concentration measurement near the spark-plug in a spark-ignition engine
with laser infrared absorption technique,
Second International Conference of Energy Engineering (ICEE-2)(Aswan), (2010), Opening Lecture.
J. L Beduneau, N. Kawahara, T. Nakayama, E. Tomita, Y. Ikeda,
Laser-induced radical generation and evolution to a self-sustaining flame,
Combustion and Flame, Vol.156, Issue 3, pp.642-656, (2009)
Nobuyuki Kawahara, Eiji Tomita,
Visualization of Auto-ignition and Pressure Wave during Knocking
in a Hydrogen Spark-Ignition Engine,
International Journal of Hydrogen Energy, Vol.34, Issue 7, pp.3156-3163, (2009)
Kazuya Tsuboi and Tatsuya Hasegawa,
DNS Analysis on Correlation between Local Burning Velocity and Local Stretch Rate
for Turbulent Premixed Flames with Different Lewis Numbers,
Proceedings of the 7th Asia-Pacific Conference on Combustion, (Taipei),
p.208 (10203), (2009)
Nobuyuki Kawahara, Eiji Tomita, Mithun Kanti Roy,
Visualization of Auto-Ignited Kernel and Propagation of Pressure Wave
during Knocking Combustion in a Hydrogen Spark-Ignition Engine,
SAE 2009 Powertrains, Fuels and Lubricants Meeting, SAE Paper No.2009-01-1773, (2009)
Murari Mohon Roy, Eiji Tomita, Nobuyuki Kawahara, Atsushi Sakane,
Effect of Fuel Injection Parameters on Engine Performance and Emissions
of a Supercharged Producer Gas-Diesel Dual Fuel Engine,
SAE 2009 Powertrains, Fuels and Lubricants Meeting, SAE Paper No.2009-01-1848, (2009)
Eiji Tomita, Yuji Harada, Nobuyuki Kawahara, Atsushi Sakane,
Effect of EGR on Combustion and Exhaust Emissions
in Supercharged Dual-Fuel Natural Gas Engine Ignited with Diesel Fuel,
SAE 2009 Powertrains, Fuels and Lubricants Meeting, SAE Paper No.2009-01-1832, (2009)
Nobuyuki Kawahara, Eiji Tomita, Takuya Kadowaki,
Mixture Formation Process in a Spark Ignition Engine with Ethanol Blended Gasoline,
SAE 2009 Powertrains, Fuels and Lubricants Meeting, SAE Paper No.2009-01-1957, (2009)
Murari Mohon Roy, Eiji Tomita, Nobuyuki Kawahara, Yuji Harada, Atsushi Sakane,
Performance and emission comparison of a supercharged dual-fuel engine
fueled by producer gases with varying hydrogen content,
International Journal of Hydrogen Energy, Volume 34, Issue 18, pp.7811-7822, (2009)
Nobuyuki Kawahara, Eiji Tomita, Satoshi Takemoto, Yuji Ikeda,
Fuel Concentration Measurement of Premixed Mixture
Using Spark-Induced Breakdown Spectroscopy,
Spectrochemica Acta Part B: Atomic Spectroscopy, 64, pp.1085-1092, (2009)
Eiji Tomita and Nobuyuki Kawahara,
Utilization of HCCI Concept - Behavior of Autoignition of End Gas
without Knock in an Engine
Thirty-First Task Leaders Meeting, International Energy Agency
Implementing Agreement on Energy Conservation and Emissions Reduction in Combustion,
IEA Collaborative Task - HCCI, 2009.9.21
Eiji Tomita, Murari Mohon Roy and Nobuyuki Kawahara
Hydrogen Combustion and Exhaust Emissions in a Supercharged Gas Engine
Ignited with Micro Pilot Diesel Fuel
Thirty-First Task Leaders Meeting, International Energy Agency
Implementing Agreement on Energy Conservation and Emissions Reduction in Combustion,
IEA Collaborative Task - Hydrogen combustion, 2009.9.23
Nobuyuki Kawahara and Eiji Tomita,
Mixture Formation Process in a Spark-Ignition Engine with Ethanol Blended Gasoline,
Thirty-First Task Leaders Meeting, International Energy Agency
Implementing Agreement on Energy Conservation and Emissions Reduction in Combustion,
IEA Task Leaders Meeting - 1.4G Spark ignition engine, 2009.9.23
Fatma Ahmed, Nobuyuki Kawahara, Eiji Tomita, Mamoru Sumida,
PDA analysis near nozzle region of Transient Spray from Multi-hole Injector
of DISI engine,
The 13th Annual Conference on Liquid Atomization and Spray Systems-Asia
(Wuxin, P.R.China), pp.48-55, (2009)
Eiji Tomita, Tomoya Takeuchi, Yoshio Yamamoto, Kazuhiro Morinaka, Makoto Haneda,
Study on Diesel Combustion Behavior with Optical Combustion Analyzer,
Proc. of International Symposium on Marine Engineering (ISME) 2009, (Busan, Korea),
pp.1-6, (2009)
Murari Mohon Roy, Eiji Tomita, Nobuyuki Kawahara, Yuji Harada, Atsushi Sakane,
Performance and emissions of a supercharged dual-fuel engine
fueled by hydrogen-rich coke oven gas,
International Journal of Hydrogen Energy, Volume 34, Issue 23, pp. 9628-9638, (2009)
Murari Mohon Roy, Eiji Tomita, Nobuyuki Kawahara, Yuji Harada, Atsushi Sakane,
Effect of CO2 Content in Producer Gases on Performance and Emissions
of a Supercharged Dual-fuel Engine,
International Mobility Engineering Congress and Exposition 2009, (Chennai, India),
SAE Paper No.2009-28-0031, (2009)
Eiji Tomita, Yusuke Maeda, Takeshi Imahashi, Hiroshi Morinaka and Yoshio Yamamoto,
Ignitibility and Combustibility of Bunker Fuel Oil -An Experimental Evaluation
Using an Optical Combustion Analyzer,
Translated from Journal of the JIME Vol.43,No.5, 2008(Original Japanese),
2008 AP3: Award Papers, the Japan Institute of Marine Engineering,
http://www.mesj.or.jp/publication/award_paper/ap.html
Changhee Lee, Nobuyuki Kawahara, Eiji Tomita, Kenji Inoshita,
Gas Temperature Measurement in a DME-HCCI Engine using Heterodyne Interferometry
with Spark-Plug-in Fiber-Optic Sensor,
SAE Transactions, Vol.116, Sect.4, pp.316-324, (2008)
Eiji Tomita and Nobuyuki Kawahara,
Temperature Measurement of Water with a Sensor by Laser Interferometry Technique,
Proc. of 14th Int. Symp. on Applications of Laser Techniques to Fluid Mechanics,
(Lisbon, Portugal), No.6.3-4, pp.1-10, (2008.7)
Nobuyuki KAWAHARA, Eiji TOMITA, Mamoru SUMIDA,
Microscopic Visualization of Liquid Column Break-up Process in Gasoline PFI Injector,
Proc. of 14th Int. Symp. on Applications of Laser Techniques to Fluid Mechanics,
(Lisbon, Portugal), pp.1-11, (2008.7)
Mohamed Esmail, Nobuyuki Kawahara, Eiji Tomita and Mamoru Sumida,
Effect of Nozzle Geometry on Atomization of Transient Spray from Port Fuel Injector,
7th International Conference on Modeling and Diagnostics for Advanced Engine Systems
(COMODIA-2008), pp.429-436, (2008.8)
Fatma Ahmed, Nobuyuki Kawahara, Eiji Tomita and Mamoru Sumida,
Spray Behavior near the Nozzle of a DISI Multi-Hole Injector Using Phase Doppler Anemometer,
7th International Conference on Modeling and Diagnostics for Advanced Engine Systems
(COMODIA-2008), pp.445-452, (2008.8)
Nobuyuki Kawahara, Eiji Tomita, Masaki Yoshitomi,
Knock in a Hydrogen Spark-Ignition Engine,
The 32nd International Combustion Symposium, Accepted poster, 1P74, (2008.8)
Nobuyuki Kawahara, Eiji Tomita, Hiroaki Masatsuki,
Soot formation during knocking combustion in a spark-ignition engine,
The 32nd International Combustion Symposium, Accepted poster, 1P79, (2008.8)
Kazuya Tsuboi, Tatsuya Hasegawa,
An Analysis on local burning velocities of turbulent premixed flames using DNS databases,
The 32nd International Symposium on Combustion, Accepted poster, 2P58, (2008.8)
Eiji Tomita, Nobuyuki Kawahara, Seiji Ohuchi, Tetsuo Komoda, Atsushi Sakane,
Effect of Gas Flow on Combustion and Exhaust Emissions in a Dual Fuel Natural Gas Engine,
Journal of KONES Powertrain and Transport, Vol.15, No.2, pp.519-527,(2008.9)
Sadami Yoshiyama, Eiji Tomita, Masatoshi Mori, Yuji Sato,
Ion Current in a Homogeneous Charge Compression Ignition Engine,
Review of Automotive Engineering, Vol.29, No.3, pp.299-306, (2008)
Nobuyuki Kawahara, Yuji Ikeda, Eiji Tomita, Satoshi Takemoto,
Fuel Concentration Measurements of Premixed Mixture Using Spark-Induced Breakdown
Spectroscopy,
5th International Conference on Laser-Induced Breakdown Spectroscopy (LIBS2008),
pp.22-26, (Berlin, Adlershof, Germany), (2008.9)
Nobuyuki Kawahara, Eiji Tomita, Masaki Yoshitomi,
Visualization of Knocking Combustion in a Hydrogen Spark-Ignition Engine,
Meeting the Challenges to Sustainable Mobility, pp.3-9, (2008.11)
Kazuya Tsuboi, Shinnosuke Nishiki and Tatsuya Hasegawa,
An Analysis of Local Quantities of Turbulent Premixed Flames Using DNS Databases,
Journal of Thermal Science and Technology, Vol.3, No.1, pp.103-111, (2008)
Arnaud Mura, Kazuya Tsuboi, Tatsuya Hasegawa,
Modelling of the correlation between velocity and reactive scalar gradients
in turbulent premixed flames based on DNS data,
Combustion Theory and Modelling, Vol.12, issue 4, pp.671-698, (2008)
Kawahara, N., Beduneau, J. L., Nakayama, T., Tomita, E., Ikeda, Y.,
Spatially, temporally and spectrally resolved measurement of laser induced plasma in air,
Applied Physics B: Lasers and Optics, Vol.86, pp.605-614, (2007.4)
Kawahara, N., Tomita, E., Sakata, Y.,
Auto-Ignited Kernels during Knocking Combustion in a Spark-Ignition Engine,
Proc. of the Combustion Institute, Vol.31-2, pp.2999-3006, (2007.4)
Kawahara, N., Tomita, E., Hayashi, K., Tabata, M., Iwai, K., Kagawa, R.,
Cycle-Resolved Measurements of the Fuel Concentration near a Spark Plug
in a Rotary Engine Using an in situ Laser Absorption Method,
Proc. of the Combustion Institute, Vol.31-2, pp.3033-3040, (2007.4)
Eiji Tomita, Nobuhiko Fukatani, Nobuyuki Kawahara, Keiji Maruyama, Tetsuo Komoda,
Combustion Characteristics and Performance of Supercharged Pyrolysis Gas Engine
with Micro-Pilot Ignition,
Proc. of 25th CIMAC World Congress on Combustion Engine Technology (CIMAC 2007),
Paper No.178, pp.1-10, (2007.5)
Takeshi Imahashi, Eiji Tomita, Taizo Kimoto,
Experimental analysis on the combustion rate due to interference of the burned gas
in slow speed diesel engine with a side fuel injection nozzle system,
Proc. of 25th CIMAC World Congress on Combustion Engine Technology (CIMAC 2007),
Paper No.177, pp.1-11, (2007.5)
Eiji Tomita, Takeshi Imahashi, Yusuke Maeda, Hiroshi Morinaka, Tatsuro Sasaki,
Evaluation of Combustability of Bunker Fuel Oil Using Optic Combustion Analyzer (OCA),
Proc. of 25th CIMAC World Congress on Combustion Engine Technology (CIMAC 2007),
Paper No.279, pp.1-12, (2007.5)
Nobuyuki Kawahara, Eiji Tomita,
Cycle-Resolved Measurements of the Fuel Concentration near a Spark Plug
in an SI Engine Using an in-situ Laser Absorption Method,
6th Asia-Pacific Conference on Combustion, pp.47-50, (2007.5)
Eiji Tomita, Nobuyuki Kawahara, Yasuji Toda,
in situ Measurement of Water Temperature with a Sensor Using Interferometry,
2007 ASME-JSME Thermal Engineering Summer Heat Transfer Conference,
No.HT2007-32022, pp.1-7, (2007.7)
Changhee Lee, Nobuyuki Kawahara, Eiji Tomita, Kenji Inoshita,
Gas Temperature Measurement in a DME-HCCI Engine using Heterodyne Interferometry
with Spark-Plug-in Fiber-Optic Sensor,
SAE Paper, No.2007-01-1848, (2007.7)
Changhee Lee, Eiji Tomita, KiHyung Lee,
Characteristics of Combustion Stability and Emission in SCCI and CAI Combustion
Based on Direct-Injection Gasoline Engine,
SAE Paper, No.2007-01-1872 (JSAE 20077053), (2007.7)
Nobuyuki Kawahara, Eiji Tomita, Yutaka Tanaka,
Residual Gas Fraction Measurement inside Engine Cylinder
Using Infrared Absorption Method with Spark-plug Sensor,
SAE Paper, No.2007-01-0228 (JSAE20077099), (2007.7)
Eiji Tomita, Nobuhiko Fukatani, Nobuyuki Kawahara, Keiji Maruyama, Tetsuo Komoda,
Combustion in a Supercharged Biomass Gas Engine with Micro-Pilot Ignition
-Effect of Injection Pressure and Amount of Diesel Fuel-,
Journal of KONES2007, Vol.2, pp.513-520, (2007.9)
Sadami Yoshiyama, Eiji Tomita, Masatoshi Mori, Yuji Sato,
Ion Current in a Homogeneous Charge Compression Ignition Engine,
SAE Paper, No.2007-01-4052, (2007.10)
Nobuyuki Kawahara, Eiji Tomita, Hidenori Yasuda,
In-situ Residual Gas Concentration Measurement near a Spark Plug in a Motorcycle SI Engine,
Proc. of the 13th Small Engine Technology 2007, SAE Paper No.2007-32-0049, (2007.10)
Nobuyuki Kawahara,
Fuel Break-up and Atomization Process near Nozzle Exit of Gasoline Injector,
ILASS-Korea 2007, Invited Lecture, pp.3-8, (2007.11)
Yuji Ikeda, Atsushi Nishiyama, Nobuyuki Kawahara, Eiji Tomita and Takashi Nakayama
Local equivalence ratio measurement of CH4/air and C3H8/air laminar flames
by laser-induced breakdown spectroscopy,
45th AIAA Aerospace Sciences Meeting and Exhibition, AIAA Paper, No.AIAA-2006-965, pp.1-13
Nobuyuki Kawahara, Eiji Tomita, Takashi Nakayama, Yuji Ikeda, Atsushi Nishiyama
Spatial and Temporal Characteristics of Laser-induced Air Plasma,
45th AIAA Aerospace Sciences Meeting and Exhibition, AIAA paper, No.AIAA-2006-1461, pp.1-10
Nobuyuki Kawahara, Eiji Tomita, Atsushi Nishiyama, Kenta Hayashi,
In-Situ Fuel Concentration Measurement near Spark Plug by 3.392 um Infrared Absorption Method
-Pressure and Temperature Dependence of the Gasoline Molar Absorption Coefficient-,
SAE 2006 World Congress, Paper No.2006-01-0182, pp.1-9
Nobuyuki Kawahara, Eiji Tomita, Kenta Hayashi, Michihiko Tabata, Kouhei Iwai and Ryoji Kagawa
In-Situ Fuel Concentration Measurement Using an IR Spark Plug Sensor
by Laser Infrared Absorption Method - Application to a Rotary Engine-,
Proceedings of 13th International Symposium on Applications of Laser Techniques
to Fluid Mechanics, No.24-6, pp.1-11, in CD-ROM
Eiji Tomita, Nobuyuki Kawahara, Yasuji Toda,
A New Sensor for Temperature Measurement of Water by Laser Interferometry Technique,
Proceedings of 13th International Symposium on Applications of Laser Techniques
to Fluid Mechanics, No.3-4, pp.1-10, in CD-ROM
Nobuyuki Kawahara, Eiji Tomita,
Auto-Ignition Behavior under Knocking in a Spark-Ignition Engine,
Proceedings of Twenty-Eighth Task Leader's Meeting of the International Energy Agency
Implementing Agreement on Energy Conservation and Emission Reduction in Combustion, pp.100-108
Nobuyuki Kawahara, Eiji Tomita, Hiroaki Nakasuji and Mamoru Sumida
PDA measurement of transient spray formed by a DISI multi-hole injector,
Proceedings of 10th International Conference on Liquid Atomization and Spray Systems
(ICLASS 2006), Paper No.12.1F2-05-186, pp.1-7
Yuji Ikeda, Kim, S.M., Y. Horibe, S. Takaki, Nobuyuki Kawahara
Development of an aerosol nozzle to optimally deliver insecticides to the target
and improve the agglomerative characteristics of the spray,
Proceedings of 10th International Conference on Liquid Atomization and Spray Systems
(ICLASS 2006), Paper No.C1-11-208, pp.1-7
Nobuhiko Fukatani, Eiji Tomita, Nobuyuki Kawahara, Keiji Maruyama, Tetsuo Komoda
Combustion Characteristics and Performance of Supercharged Micro-pilot Natural Gas Engine,
Proceedings of FISITA 2006 World Automotive Congress, Paper No.F2006P230, pp.1-10
E. Tomita, N. Kawahara,
Concentration Measurement of Unburned Hydrocarbons in Exhaust Gas from an SI Engine
by Using 3.392 micrometer Absorption Method,
6th JSME-KSME Thermal Engineering Conference, Paper No.DF-02, (2005).
N. Kawahara, E. Tomita, K. Ohnishi, K. Goto,
In-situ Unburned Gas Temperature Measurement in a Spark Ignition Engine
Using Laser Interferometry,
SAE 2005 World Congress, SAE Paper No.2005-01-0646, (2005).
N. Kawahara, E. Tomita, A. Takeuchi, S. Arimoto, Y. Ikeda, A. Nishiyama,
Measurement of Flame Propagation Characteristics in an SI Engine
Using Micro-Local Chemiluminescence Technique,
SAE 2005 World Congress, SAE Paper No.2005-01-0645, (2005).
Y. Ikeda, A. Nishiyama, N. Kawahara, E. Tomita, S. Arimoto, A. Takeuchi,
In-spark-plug Sensor for Analysing the Initial Flame and Its Structure in an SI Engine,
SAE 2005 World Congress, SAE Paper No.2005-01-0644, (2005).
Akihiko Kakuho, Koichi Yamaguchi, Yutaka Hashizume, Tomonori Urushihara, Teruyuki Itoh
and Eiji Tomita,
A Study of Air-Fuel Mixture Formation in Direct-Injection SI Engines,
SAE Transactions, Vol.113, Sect.4, Journal of Fuels and Lubricants,
Paper No.2004-01-1946, pp.1169-1180, (2004).
Tatsuya Tanaka, Kazuaki Narahara, Michihiko Tabata, Sadami Yoshiyama, Eiji Tomita,
Ion current measurement in homogeneous charge compression ignition engine,
International Journal of Engine Research, Vol.6, No.5, pp.453-463.(2005.10)
Eiji Tomita, Takamitsu Ohuchi, Takeshi Imahashi, Hiroshi Morinaka, Isao Takasu,
Tatsuro Sasaki, Masanori Kobayashi and Hitoshi Kanaeko,
Combustion Characteristics of Spray of Bunker Fuel Oil in a Constant-Volume Vessel
with High-Speed Visualization,
7th International Symposium on Marine Engineering (ISME2005, Tokyo), pp.1-9 in CD-ROM,(2005.10)
Sadami Yoshiyama, Eiji Tomita, Shunsuke Kitawaki, Keizo Kamada,
Ion Current during the Exhaust Process Under the Idling Condition in a Spark Ignition Engine,
SAE 2005 Powertrain and Fluids System Conference, Paper No.2005-01-3872.(2005).
Eiji Tomita, Nobuyuki Kawahara, Yoshio Kinoshita, Tetsuo Komoda, Atsushi Sakane,
Combustion Characteristics and Performance of Supercharged Single Cylinder Natural Gas Engine
Ignited with Pilot Injection of Diesel Fuel,
Proc. of FISITA 2004 World Automotive Congress, Paper No.F2004V229., (2004).
Nobuyuki Kawahara, Eiji Tomita, Shigeyuki Arimoto,
Homogeneous Charge Compression Ignition Combustion with Dimethyl Ether
(Effect of Stratified Fuel Concentration)
Proc. of FISITA 2004 World Automotive Congress, Paper No.F2004F416., (2004).
Nishiyama, A., Kawahara, N., Tomita, E., Fujiwara, M., Ishikawa, N., Kamei, K.,
Nagashima, K.,
in Situ Fuel Concentration Measurement near Spark Plug by 3.39 m Infrared Absorption Method
(Application to a Port Injected Lean-Burn Engine),
SAE 2004 World Congress, SAE paper No.2004-01-1353, (2004).
Kawahara, N., Tomita, E., Nakayama, T., Kasahara, D., Sumida, M.,
Fuel Breakup near Nozzle Exit of High-Pressure Swirl Injector
for Gasoline Direct Injection Engine,
SAE 2004 World Congress, SAE Paper No.2004-01-0542, (2004).
Sadami Yoshiyama, Eiji Tomita, Nobuo Tabuchi, Kenji Matsumoto, Katsunori Matsuki,
Detection of Flame Propagation Pattern in a Spark Ignition Engine Using Gasket Ion Sensor,
SAE 2004 Spring Fuels and Lubricants Meeting, Paper No.2004-01-1919., (2004).
Akihiko Kokuho, Koichi Yamaguchi, Yutaka Hashizume, Tomonori Urushihara, Teruyuki Itoh
and Eiji Tomita,
A Study of Air-Fuel Mixture Formation in Direct-Injection SI Engines,
SAE 2004 Spring Fuels and Lubricants Meeting, Paper No.2004-01-1946, pp.1-12., (2004).
Eiji Tomita, Nobuyuki Kawahara, Takamitsu Ohuchi, Takeshi Imahashi, Isao Takasu,
Hiroshi Morinaka, Kohei Yokota,
Development of combustion facility of constant-volume vessel
for investigating combustion characteristics of bunker fuel oil,
Proc. of 24th CIMAC World Congress on Combustion Engine Technology,
pp.1-9 in CD-ROM (No.171), (2004).
Takeshi Imahashi, Eiji Tomita, Sadami Yoshiyama and Shunsuke Ichimura,
Estimation of combustion process based on rate of heat release curve
in a two-stroke slow speed large marine diesel engine,
Proc. of 24th CIMAC World Congress on Combustion Engine Technology,
pp.1-16 in CD-ROM (No.121), (2004).
Nobuyuki Kawahara, Eiji Tomita, Koji Takasu, Kazuhiro Goto,
Measurement of Unburned Gas Temperature in an SI Engine
Using Fiber-Optic Laser Interferometry,
Proc. of 12th International Symposium on application of laser techniques to Fluids Mechanics,
Paper No.17.3, (2004).
Yuji Ikeda, Takahiro Kurahashi, Nobuyuki Kawahara, Eiji Tomita,
Temperature Measurements of Laminar Propane/Air Premixed Flame,
Proc. of 12th International Symposium on application of laser techniques to Fluids Mechanics,
Paper No.12.1, (2004).
Yuji Ikeda, Nobuyuki Kawahara, Eiji Tomita,
Time-Series A/F Analysis in an SI Engine by Micro-Local Chemiluminessence Technique,
Proc. of 6th International Symposium on Diagnostics and Modeling of Combustion
in Internal Combustion Engines (COMODIA2004), pp.455-462, (2004).
Nobuyuki Kawahara, Eiji Tomita, Daisuke Kasahara, and Mamoru Sumida,
Liquid Sheet Break-up of High-Pressure Swirl Injector for DISI Engines,
Proc. of the 6th International Symposium on Diagnostics and Modeling of Combustion
in Internal Combustion Engines (COMODIA 2004), pp.279-285, (2004).
Tatsuya Tanaka, Kazuaki Narahara, Michihiko Tabata, Sadami Yoshiyama and Eiji Tomita,
Measurement of Ion Current on Homogeneous Charge Compression Ignition Combustion,
Proc. of the 6th International Symposium on Diagnostics and Modeling of Combustion
in Internal Combustion Engines (COMODIA 2004), pp.319-325, (2004).
Nobuyuki Kawahara, Eiji Tomita, Daisuke Fukuda and Mamoru Sumida,
PIV Measurement of High-Pressure Swirl Injector Spray near Nozzle Exit for DISI Engine,
Proc. of 7th International Congress on Optical Particle Characterization (Kyoto),
Paper No.O-2-3, (2004).
Eiji Tomita and Nobuyuki Kawahara,
Characteristics of Combustion and Exhaust Emissions in a Dual Fuel Engine with HCCI Concept
- Diluted and Stoichiometric Combustion -
HCCI Symposium at Berkeley, pp.357-373, (2004).
Eiji Tomita and Nobuyuki Kawahara,
Real Time HC Concentration Measurement in Exhaust Gas from a Spark-Ignition Engine
by Using 3.392μm Absorption Method,
Proc. of 30th International Scientific Conference on Internal Combustion Engines (KONES2004),
pp.280-287, (2004).
Atsushi Nishiyama, Nobuyuki Kawahara, and Eiji Tomita,
In-situ Fuel Concentration Measurement near Spark Plug by 3.392 μm Infrared Absorption Method
(Application to Spark Ignition Engine),
SAE Transactions, Journal of Engines,
Vol.112, Sect.1, pp.1561-1568, (Paper No.2003-01-1109), (2003).
Nobuyuki Kawahara, Eiji Tomita, Mitsuru Ichimiya, Kouji Takasu, Naoki Tsuchida,
and Kazuhiro Goto,
Transient Temperature Measurement of Unburned Gas in an Engine Cylinder
Using Laser Interferometry with a Fiber-optic Sensor
SAE Transactions, Journal of Fuels and Lubricants,
Vol.112, Sect.4, pp.1044-151, (Paper No.2003-01-1799), (2003).
Sadami Yoshiyama, Eiji Tomita, Nobuo Tabuchi, Kenji Matsumoto and Katsunori Matsuki,
Combustion Diagnostics of a Spark Ignition Engine by Using Gasket Ion Sensor,
SAE Transactions, Journal of Fuels and Lubricants,
Vol.112, Sect.4, pp.1059-1065, (Paper No.2003-01-1801), (2003).
Nobuyuki Kawahara, Eiji Tomita, and Hisashi Kagajyo,
Homogeneous Charge Compression Ignition Combustion with Dimethyl Ether
(Spectrum Analysis of Chemiluminescence),
SAE Transactions, Journal of Fuels and Lubricants,
Vol.112, Sect.4, pp.1214-1221, (Paper No.2003-01-1828), (2003).
Tomita, E., Kawahara, N., Piao, Z., Yamaguchi, R.,
Effects of EGR and Early Injection of Diesel Fuel on Combustion Characteristics
and Exhaust Emissions in a Methane Dual Fuel Engine,
SAE Transactions - Journal of Fuels and Lubricants, SAE Paper No.2002-01-2723, (2003).
Zhang, Z., Kawabata , H. and Tomita, E.,
A New Method of Fractal Analysis Using Wavelet Transform and its Application
in Tumbling Flow Analysis,
JSME International Journal, Series B, Vol.46, No.1, (2003), pp.137-144.
Tomita, E., Kawahara, N., Shigenaga, M., Nishiyama, A., and Dibble, R.W.,
In situ Measurement of Hydrocarbon Fuel Concentration near a Spark Plug in an Engine Cylinder
by 3.392 um Infrared Laser Absorption Method
- Discussion of Applicability with Homogeneous Methane-Air Mixture -,
Measurement Science and Technology, Vol.14, No.8, pp.1350-1356, (2003).
Tomita, E., Kawahara, N., Nishiyama, A., Shigenaga, M.,
In situ Measurement of Hydrocarbon Fuel Concentration near a Spark Plug in an Engine Cylinder
by 3.392 um Infrared Laser Absorption Method - Application to Actual Engine -,
Measurement Science and Technology, Vol.14, No.8, pp.1357-1363, (2003).
Tomita, E., Kawahara, N., Piao, Z., Yamaguchi, R.,
Combustion and Exhaust Emissions in a Hydrogen Fueled Engine Ignited with Light Oil,
Proc. of The 6th ASME-JSME Thermal Engineering Joint Conference, in CD-ROM, (2003).
Kawahara, N., Tomita, E., Kagajyo, H.,
Homogeneous Charge Compression Ignition Combustion with Dimethyl Ether
- Analysis of Two-Stage Heat Release -,
Proc. of The 6th ASME-JSME Thermal Engineering Joint Conference, in CD-ROM, (2003).
Nishiyama, A., Kawahara, N., and Tomita, E.,
In-Situ Fuel Concentration Measurement near Spark Plug by 3.392 um Infrared Absorption Method
(Application to Spark Ignition Engine),
SAE 2003 World Congress, SAE Paper No.2003-01-1109, (2003).
Kawahara, N., Tomita, E., Ichimiya, M., Takasu, K., Tsuchida, N., Goto, K,
Transient Temperature Measurement of Unburned Gas in an Engine Cylinder
Using Laser Interferometry with a Fiber-Optic Sensor,
SAE International Spring Fuels and Lubricants, SAE Paper No.2003-01-1799, (2003).
Yoshiyama, S., Tomita, E., Tabuchi, N., Matsumoto, K., Matsuki, K.,
Combustion Diagnostics of a Spark Ignition Engine by Using Gasket Ion Sensor,
SAE International Spring Fuels and Lubricants, SAE Paper No.2003-01-1801, (2003).
Kawahara, N., Tomita, E., Kagajyo, H.,
Homogeneous Charge Compression Ignition Combustion with Dimethyl Ether
-Spectrum Analysis of Chemiluminescence-,
SAE International Spring Fuels and Lubricants, SAE Paper No.2003-01-1828, (2003).
Kawahara, N., Tomita, E., Nakayama, T., and Sumida, M.,
Microscopic Observation of Primary Spray Structure of High-Pressure Swirl Injector
for Gasoline Direct Injection Engine,
The 9th Int. Conf. on Liquid Atomization and Spray Systems (ICLASS 2003), in CD-ROM, (2003).
Tomita, E., Nishiyama, A., Kawahara, N.,
Effects of Swirl Flow and Inhomogeneous Concentration Fields
on Combustion of Propane-Air Mixture in a Constant-Volume Vessel,
19th International Colloquium on the Dynamics of Explosions and Reactive Systems (ICDERS),
in CD-ROM, (2003).
Kawahara, N., Tomita, E., Kagajyo, H.,
Analysis of Two-Stage Heat Release in HCCI Combustion with Dimethyl Ether,
19th International Colloquium on the Dynamics of Explosions and Reactive Systems (ICDERS),
in CD-ROM, (2003).
Nishiyama, A., Kawahara, N., Tomita, E., Shigenaga, M.,
In-Situ Fuel Concentration Measurement with Optical Spark Plug Sensor
by 3.39 um Infrared Laser Absorption Method,
19th International Colloquium on the Dynamics of Explosions and Reactive Systems (ICDERS),
in CD-ROM, (2003).
Sadami Yoshiyama, Eiji Tomita, Zhong Zhang,
Measurement and Simulation of Turbulent Flame Propagation in a Spark Ignition Engine
by Using Fractal Burning Model,
SAE Transactions, Vol.110, Journal of Engines, Sect.1, (2001), pp.2311-2323..(Paper No. 2001-01-3603).
Kawahara, N., Tomita, E., Kamakura, H.,
Unburned Gas Temperature Measurement in a Spark-ignition Engine
Using Fiber-Optic Heterodyne Interferometry,
Measurement Science and Technology, Vol.13, No.1, pp.125-131, January 2002.
Zhang, Z. and Tomita, E.,
Knocking detection using wavelet instantaneous correlation method,
JSAE Review, 23 (2002), pp.443-449.
Eiji Tomita, Nobuyuki Kawahara, Masahiro Shigenaga, Sadami Yoshiyama, Yoshisuke Hamamoto,
Akihiko Kakuho, Teruyuki Itoh, Robert W. Dibble,
An optical sensor instrumented in spark plug for in-situ fuel concentration measurement
in an engine cylinder by 3.39 mm infrared absorption method,
11th International Symposium on Application of Laser Diagnostics to Fluid Mechanics,
pp.1-12(CD-ROM), July 2002.
Kawahara, N., Tomita, E., Kamakura, H., Ichimiya, M.,
Transient Temperature Measurement of Unburned Gas in an Engine Cylinder
Using Fiber-Optic Heterodyne Interferometry,
11th International Symposium on Application of Laser Diagnostics to Fluid Mechanics,
pp.1-11(CD-ROM), July 2002.
Eiji Tomita, Nobuyuki Kawahara, Sadami Yoshiyama, Akihiko Kakuho, Teruyuki Itoh
and Yoshisuke Hamamoto,
in situ fuel concentration measurement near spark plug in spark-ignition engines
by 3.39 um infrared laser absorption method,
Proc. of the Combustion Institute, 29, pp.735-741, (2002).
Atsushi Nishiyama, Eiji Tomita, Nobuyuki Kawahara, Sadami Yoshiyama, Yoshisuke Hamamoto,
Flame Propagation and Combustion Characteristics of Stratified Charge Propane-Air Mixture
with Swirling Flow in a Constant-Volume Vessel,
Abstracts of work-in-progress posters of 29th International Symposium on Combustion,
15-1456, p.207, 2002.7.23.
Nobuyuki Kawahara, Eiji Tomita, Mitsuru Ichimiya,
Fiber-Optic Heterodyne Interferometry Temperature Measurement of Unburned Gas
in a HCCI Engine Fueled with DME,
Abstracts of work-in-progress posters of 29th International Symposium on Combustion,
3-1462, p.170, 2002.7.23.
Atsushi Nishiyama, Nobuyuki Kawahara, Eiji Tomita,
In-Situ Fuel Concentration Measurement near Spark Plug by 3.39 um Infrared Absorption Method
(Development of a Double-Pass Optical Sensor),
Abstracts of work-in-progress posters of 29th International Symposium on Combustion,
3-1459, p.169, 2002.7.23.
Eiji Tomita, Nobuyuki Kawahara, Zhenyu Piao, and Ryoichi Yamaguchi,
Effects of EGR and Early Injection of Diesel Fuel on Combustion Characteristics
and Exhaust Emissions in a Methane Dual Fuel Engine,
SAE 2002 Powertrain and Fluid Systems Conference and Exhibition,
Paper No.2002-01-2723, pp.1-10, October 2002.
Sadami Yoshiyama and Eiji Tomita,
Combustion Diagnostics of a Spark Ignition Engine Using a Spark Plug as an Ion Probe,
SAE 2002 Powertrain and Fluid Systems Conference and Exhibition,
Paper No.2002-01-2838, pp.1-8, October 2002.
Zhong Zhang, Hiroaki Kawabata, and Eiji Tomita,
Cellular Neural Network and its application in Diagnostic of Automobile Abnormal Sound,
SAE 2002 Powertrain and Fluid Systems Conference and Exhibition,
Paper No.2002-01-2810, pp.1-8, October 2002.
Kawahara, N., Tomita, E. and Kamakura, H.,
Transient temperature measurement of unburned gas using optic heterodyne interferometry,
in (eds. Adrian, R. J., Durao, D. F. G., Durst, F., Heitor, M. V., Maeda, M.,
Whitelaw, J. H., Laser Techniques for Fluid Mechanics (2002), pp.157-172, Springer Verlag.
Nobuyuki Kawahara, Eiji Tomita and Hiroshi Kamakura,
Measurement of Transient Temperature of Gas Using Fiber Optic Heterodyne Interferometer,
Proceedings of the Third Asia-Pacific Conference on Combustion (ASPACC2001),
pp.413-416, June 2001.
Atsushi Nishiyama, Eiji Tomita, Nobuyuki Kawahara, Yoshisuke Hamamoto
and Sadami Yoshiyama,
Combustion Characteristics of Stratified Fuel-Air Mixture with Swirl
in a Constant-Volume Vessel,
Proceedings of the Third Asia-Pacific Conference on Combustion (ASPACC2001),
pp.519-522, June 2001.
Zhong Zhang, Hiroaki Kawabata and Eiji Tomita,
A Study on Fractal Analysis of Tumbling Flow in a Spark Ignition Engine
Using Wavelet Transform,
Proceedings of 2001 Japan China Workshop on Combustion and Its Latest Measuring Technique,
pp.103-110, June 2001.
Nobuyuki Kawahara, Eiji Tomita, Atsushi Nishiyama, Sadami Yoshiyama,
and Yoshisuke Hamamoto,
Effects of Swirl Turbulent Flow Field and Inhomogeneous Concentration Field
on Combustion of Fuel-Air Mixture in a Constant Volume Vessel,
Proceedings of the Fifth International Symposium on Diagnostics and Modeling of Combustion
in Internal Combustion Engines (COMODIA2001), p.29, (Full paper in CD-ROM, pp.1-7), July 2001.
Eiji Tomita, Sadami Yoshiyama, Yasuhiro Ohkura, Hiroshi Tabuchi, Yoshisuke Hamamoto,
Turbulent Premixed Flames under Lean Conditions Studied with Ion Current Measurement
in a Homogeneous Charge Spark-Ignition Engine,
SAE Transactions, Vol.109, J. of Fuels and Lubricants,
Sect. 4, (2000), pp.1641-1650, (Paper No.2000-01-1940).
Zhong Zhang and Eiji Tomita,
A New Diagnostic Method of Knocking in a Spark-Ignition Engine Using the Wavelet Transform,
SAE Transactions, Vol.109, J. of Fuels and Lubricants,
Sect. 4, (2000), pp.972-979, (Paper No.2000-01-1801).
Sadami Yoshiyama, Eiji Tomita and Yoshisuke Hamamoto,
Fundamental Study on Combustion Diagnostics Using a Spark Plug as Ion Probe,
SAE Transactions, Vol.109, J. of Engines, Sect. 3, (2000), pp.1990-2002, (Paper No.2000-01-2828).
Zhong Zhang and Eiji Tomita,
Diagnostics of Knocking by Wavelet Transform Method Utilizing Real Signal as Mother Wavelet,
2001 Fall SAE Fuels and Lubricants Meeting and Exhibition,
Paper No.2001-01-3546, pp.1-9, September 2001.
Eiji Tomita, Nobuyuki Kawahara, Zhenyu Piao, Shogo Fujita and Yoshisuke Hamamoto,
Hydrogen Combustion and Exhaust Emissions Ignited with Diesel Oil in a Dual Fuel Engine,
2001 Fall SAE Fuels and Lubricants Meeting and Exhibition,
Paper No.2001-01-3503, pp.1-8, September 2001.
Sadami Yoshiyama, Eiji Tomita, Zhong Zhang,
Measurement and Simulation of Turbulent Flame Propagation in a Spark Ignition Engine
by Using Fractal Burning Model,
2001 Fall SAE Fuels and Lubricants Meeting and Exhibition,
Paper No.2001-01-3603, pp.1-13 September 2001.
Eiji Tomita, Yoshisuke Hamamoto and DongMin Jiang,
Knocking Behavior in a Spark-Ignition Engine
-- Temperature History Measurement of Unburned Mixture -,
Proceedings of The 11th International Pacific Conference on Automotive Engineering (IPC-11),
p.23 (Full paper in CD-ROM, pp.1-7, Paper No.IPC2001D056) November 2001.
Zhong Zhang, Michihiro Nanba, Hiroaki Kawabata and Eiji Tomita,
A New Diagnostic Method of Automobile Abnormal Sound using Cellular Neural Network,
Proceedings of The 11th International Pacific Conference on Automotive Engineering (IPC-11),
p.100 (Full paper in CD-ROM, pp.1-7, Paper No.IPC2001T339) November 2001.
Nobuyuki Kawahara and Eiji Tomita,
Transient Temperature Measurement of Unburned Gas in a Spark-ignition Engine
Using Fiber-Optic Heterodyne Interferometry,
Proceedings of Busan Engine International Symposium 2001, pp.213-219, December 2001.
Eiji Tomita, Nobuyuki Kawahara, Atsushi Nishiyama, Sadami Yoshiyama
and Yoshisuke Hamamoto,
Combustion of stratified charge propane-air mixture with swirling flow
in a constant-volume vessel,
Proceedings of Busan Engine International Symposium 2001, pp.249-256, December 2001.
Zhong Zhang, Eiji Tomita, Sadami Yoshiyama, Yoshisuke Hamamoto and Hiroaki Kawabata,
Wavelet Transform Analysis of Unsteady Turbulence and Turbulent Burning Velocity
in a Constant-Volume Vessel.
JSME International Journal, Series B, Vol.44, No.4, (2001), pp.608-615.
Eiji TOMITA, Yoshisuke HAMAMOTO and Dongmin JIANG,
Measurement of the temperature history of unburned gas before knocking
in a spark-ignition engine using laser interferometry,
Measurement Science and Technology, Vol.11, No.6, (2000-6), pp.587-593.
Eiji TOMITA, Sadami YOSHIYAMA, Yasuhiro OHKURA, Hiroshi TABUCHI, Yoshisuke HAMAMOTO,
Turbulent Premixed Flames under Lean Conditions Studied with Ion Current Measurement
in a Homogeneous Charge Spark-Ignition Engine,
SAE Paper, (June, 2000), No.2000-01-1940,
(SP-1549, Combustion in Diesel and SI Engines, pp.309-318).
Zhong ZHANG and Eiji TOMITA,
A New Diagnostic Method of Knocking in a Spark-Ignition Engine Using the Wavelet Transform,
SAE Paper, (June, 2000), pp.1-8, No.2000-01-1801.
Nobuyuki KAWAHARA, Eiji TOMITA and Hiroshi KAMAKURA,
Transient Temperature Measurement of Unburned Gas Using Optic Heterodyne Interferometry,
10th International Symposium on Application of Laser Technique to Fluid Mechanics,
(July 10-13, 2000, Lisbon), (Full Paper in CD-ROM, pp.1-12).
Eiji TOMITA, Nobuyuki KAWAHARA, Yoshisuke HAMAMOTO, Zhen-Yu PIAO and Shogo FUJITA,
A Study on Hydrogen Combustion Ignited with Light Oil in a Dual Fuel Engine,
Proc. of the 4h JSME-KSME Joint Thermal Engineering Conference,
Vol.3, (October, 2000), pp.415-420.
Nobuyuki KAWAHARA, Eiji TOMITA, Sadami YOSHIYAMA, Atsushi NISHIYAMA
and Yoshisuke HAMAMOTO,
Flame Propagation of Inhomogeneous Fuel-Air Mixture with Swirl in a Constant-Volume Vessel,
Proc. of the 4th JSME-KSME Joint Thermal Engineering Conference,
Vol.3, (October, 2000), pp.309-314.
Sadami YOSHIYAMA, Eiji TOMITA and Yoshisuke HAMAMOTO,
Fundamental Study on Combustion Diagnostics Using a Spark Plug as Ion Probe,
SAE Paper, (October, 2000), pp.1-13, No.2000-01-2828.
Eiji TOMITA, Yoshisuke HAMAMOTO, Arifin SIAGIAN, Zhen-Yu PIAO and Shogo FUJITA,
Ignition Delay of Light Oil Spray into Gaseous Fuel and Air Mixture in a Dual Fuel Engine,
Proc. of the Sixth International Symposium on Marine Engineering (ISME Tokyo 2000),
(October, 2000), pp.505-510.
Eiji TOMITA, Nobuyuki KAWAHARA, Sadami YOSHIYAMA and Yoshisuke HAMAMOTO,
Fuel Concentration Measurement near Spark-Plug in a Spark-Ignition Engine
by 3.39um Infrared Laser Absorption Method,
Proc. of 22nd Task Leaders Meeting, Int. Energy Agency Executive Committee
on Energy Conservation and Emission Reduction in Combustion, (August, 2000), pp.131-138.
Kawahara, N., Yarin, A. L., Brenn, G., Kastner, O., Durst, F.,
Effect of Acoustic Streaming on the Mass Transfer from a Sublimating Sphere,
Physics of Fluids, Vol.12, No.4, (2000), pp.912-923.
Eiji TOMITA, Yoshusuke HAMAMOTO, Sadami YOSHIYAMA and Hitoshi TODA,
PLIF Measurement of Fuel Concentration Distribution in Transient Hydrogen Jet Flame,
Proc. of the 5th ASME/JSME Joint Thermal Engineering Conference, (March,1999,San Diego),
p.33 (Full paper in CD-ROM, pp.1-7).
Zhong Zhang, Eiji Tomita, Sadami Yoshiyama, Yoshisuke Hamamoto and Hiroaki Kawabata,
Wavelet Transform Analysis of Unsteady Turbulence and Turbulent Burning Velocity
in a Constant-Volume Vessel,
Proc. of the 15th Internal Combustion Engine Symposium (Int.) in Seoul, (1999, July), pp.45-50.
Sadami Yoshiyama, Eiji Tomita, Yoshisuke Hamamoto and Takeshi Hamagami,
Turbulent Flame Propagation under the Condition of Lean Mixture,
Proc. of the 15th Internal Combustion Engine Symp. (Int.) in Seoul, (1999, July), pp.51-56.
Eiji Tomita, Yoshisuke Hamamoto, Sadami Yoshiyama, and Toshiyuki Ikeuchi,
Combustion under One-Dimensional Stratified Fuel Concentration in a Constant-Volume Vessel,
Proc. of the 15th Internal Combustion Engine Symp. (Int.) in Seoul, (1999, July), pp.245-250.
Eiji TOMITA, Sadami YOSHIYAMA and Yoshisuke HAMAMOTO,
Turbulent Premixed Flame under Lean Condition in a Spark-Ignition Engine,
Proc. of 21st Task Leaders Meeting, International Energy Agency Working Party
on Energy Conservation and Emission Reduction in Combustion, (September, 1999), pp.19-26.
Akamatsu, F., Wakabayashi, T., Tsushima, S., Katsuki, M., Mizutani, Y., Ikeda, Y.,
Kawahara, N., Nakajima, T.,
Development of Light-Collecting Probe with High Spatial Resolution Applicable
to Randomly Fluctuating Combustion Fields,
Measurement Science and Technology, vol.10, (1999), pp.1240-1246.
Kawahara, N., Ikeda, Y., and Nakajima, T.,
Measurements of the Combustion Characteristics of Compound Clusters
in Pressure-Atomized Spray Flame,
37th AIAA Aerospace Sciences Meeting and Exhibit, AIAA Paper No.99-0210, (1999).
Kawahara, N., Ikeda, Y., and Nakajima, T.,
Observation of Compound-Cluster Combustion in Pressure-Atomized Spray Flame,
Proc. of 2nd ASPACC, (1999), pp.435-438.
Sadami Yoshiyama, Yoshisuke Hamamoto, Eiji Tomita and Zhong Zhang,
Fractal Characteristics of Turbulent Premixed Flame in a Closed Vessel
and a Spark-Ignition Engine,
Proceedings of the Fourth International Symposium on Diagnostics and Modeling of Combustion
in Internal Combustion Engines (COMODIA98), (1998), pp.209-214.
Eiji TOMITA, Yoshisuke HAMAMOTO, Sadami YOSHIYAMA and Hitoshi TODA,
Measurement of fuel concentration distribution of transient gydrogen jet and its flame
using planar laser induced fluorescence method,
JSAE Review, Vol.19, No.4, (1998), pp.329-335.
Eiji Tomita, Yoshisuke Hamamoto, Sadami Yoshiyama, Hiroyuki Tsutsumi and Toru Watanabe,
Ambient Air Entrainment into Transient Hydrogen Jet and its Flame Jet,
SAE Paper, (1997), No.970894,
(Diesel Engine Combustion Processes and Emission Control Technologies, SP-1246, pp.129-138).
Sadami Yoshiyama, Eiji Tomita, Yoshisuke Hamamoto and Yousuke Hozumi,
Fractal Characteristics of Homogeneous Premixed Flame in a Spark-Ignition Engine,
Proc. of the First Asia-Pacific Conference on Combustion (ASPACC97), (1997, May, in Osaka),
pp.206-209.
Mongia, R.,Tomita, E., Hsu, F., Talbot, L. and Dibble, R.,
Optical Probe For In-Situ Measurements of Air-To-Fuel Ratio In Low Emission Engines,
34th Aerospace Sciences Meeting Exhibit, (1996-1), pp.1-8 (Paper No.AIAA 96-0174).
Hamamoto, Y., Tomita, E. and Yoshiyama, S.,
Turbulent Premixed Flames in Closed Combustion Chambers,
JSME International Journal, Series B, Vol.39, No.1, (1996-2), pp.171-175.
Tomita, E., Hamamoto, Y., Tsutsumi, H. and Takasaki, S.,
Ambient Gas Entrainment into a Transient Gas Jet (Visualization of Surrounding Air Motion
and an Estimation of Entrainment Amount by Path Line Method),
JSME International Journal, Series B, Vol.39, No.3, (1996-8), pp.546-553.
Mongia, R., Tomita, E., Hsu, F., Talbot, L. and Dibble, R.,
Use of an Optical Probe for Time-Resolved in Situ Measurement of Local Air-to-Fuel Ratio
and Extent of Fuel Mixing with Applications to Low NOx Emissions in Premixed Gas Turbines,
26th Symp. (Intern.) on Combustion, (1996), pp.2749-2755, The Combustion Institute.
Yoshiyama, S., Hamamoto, Y., Tomita, E. and Minami, K.,
Measurement of Hydrocarbon Fuel Concentration by means of Infrared Absorption Technique
with 3.39μm He-Ne Laser,
JSAE Review, Vol.17, No.4, (1996), pp.339-345.
Hamamoto, Y., Tomita, E., Yamanaka, M. and Kataoka, M.,
Heat Transfer to the Wall of End Gas Side during Propagation of Premixed Flame
in a Closed Vessel (Heat Flux Measurement by Both Interference Image Analysis
and Thin Surface Thermocouple Methods),
JSME International Journal, Series B, Vol.39, No.4, (1996-11), pp.836-843.
Tomita, E., Hamamoto, Y., Tsutsumi, H. and Yoshiyama, S.,
Visualization of Transient Hydrogen Jet Flame and Ambient Air Entrainment Motion,
Transport Phenomena in Combustion (ed. S. H. Chan) (Vol.2), (1996), pp.1678-1688,
Taylor and Francis.
Tomita, E., Hamamoto, Y., Tsutsumi, H. and Yoshiyama, S.,
Visualization of Transient Hydrogen Jet Flame and Ambient Air Entrainment Motion,
8th Int. Symp. on Transport Phenomena in Combustion, 9A-5, (1995-7), pp.1-12.
Tomita, E., Hamamoto, Y., Tsutsumi, H. and Yoshiyama, S.,
Measurement of Ambient Air Entrainment into Transient Free Gas Jet
by Means of Flow Visualization,
SAE Transactions, Journal of Fuels and Lubricants,
Vol.104, Sect.4, (1995), pp.8-19 (Paper No.950056).
Tomita, E., Hamamoto, Y., Tsutsumi, H., Takasaki, S., Watanabe, T. and Yoshiyama, S.,
Visualization of Ambient Air Motion and Entrainment into a Transient Gas Jet
Impinging on a Flat Wall,
SAE Transactions, Journal of Engines, Vol.104, Sect.3, (1995), pp.2386-2398, (Paper No.952513).
Hamamoto, Y., Tomita, E. and Jiang, D.,
Temperature Measurement of End Gas under Knocking Condition in a Spark-Ignition Engine
by Laser Interferometry,
JSAE Review, Vol.15, No.2, (1994), pp.117-122.
Hamamoto, Y., Tomita, E., Zhang, Z. and Tsutsumi, H.,
Data Analysis in Unsteady Turbulent Flow Measurement
(Preliminary Study of Data Analysis of Tubulent Flow in Engine Cylinder),
JSME International Journal, Series B, Vol.37, No.2, (1994-5), pp.427-433.
Tomita, E., Hamamoto, Y., Tsutsumi, H., Takasaki, S. and Akiyama, K.,
Flow Visualization and Digital Image Processing of Transient Gas Jet Impinging on a Wall
and Surrounding Air with a High Power Diode Pumped Solid State Laser
and High Speed Video System，
Proceedings of 3rd Asian Symposium on Visualization，(1994-5), pp.717-722.
Tomita, E., Hamamoto, Y. and Jiang, D.,
Temperature and Pressure Histories of End Gas under Knocking Condition in a S.I.Engine,
Proc. of Diagnostics and Modeling of Combustion in Internal Combustion Engines (COMODIA94)，
(1994-7), pp.183-188.
Hamamoto, Y., Tomita, E., Izumi, M., and Miyamoto, O.,
Direct Measurement of Burning Velocity of Flame Propagating in Fuel-Air Homogeneous Mixtures
in a Closed Vessel,
JSME International Journal, SeriesII, Vol.34, No.2, (1991-5), pp.253-257.
浜本嘉輔, 冨田栄二, 綱島美徳, Felix C. Nsunge, 池田幸一,
レーザ干渉法による気体噴流濃度の測定,
日本舶用機関学会誌, 25巻8号, (1990-8), pp.498-504.
Hamamoto, Y., Izumi, M. and Tomita, E.,
Effects of Swirl and Air-Fuel Ratio on Premixed Combustion in a Closed Vessel,
JSME International Journal, Series II, Vol.33, No.2, (1990-5), pp.370-376.
Tomita, E. and Hamamoto, Y.,
Turbulent Premixed Flames in Combustion Chamber under Engine-like Condition,
Proc. of International Symposium on Diagnostics and Modeling of Combustion
in Internal Combustion Engines (COMODIA90), (1990-9), pp.135-140.
Hamamoto, Y. and Tomita, E.,
Direct Measurement of Burning Velocity of Premixed Flame in Combustion Chamber,
Proc. of 12th Task Leaders Meeting, International Energy Agency Working Party
on Conservation in Combustion, (1990-9), pp.249-254.
Hamamoto, Y., Tomita, E. and Okada, T.,
The Measurement of the Transient Temperature of Gas by Laser Interferometry,
JSME International Journal, Series II, Vol.32, No.2, (1989-5), pp.247-251.
Hamamoto, Y., Izumi, M. and Tomita, E.,
Turbulent Premixed Flames in a Closed Vessel Studied Through Analysis of Flame Photographs,
JSME International Journal, Series II, Vol.32, No.3, (1989-8), pp.443-448.
Hamamoto, Y., Tomita, E. and Izumi, M.,
The Effect of Swirl on the Combustion of a Homogeneous Mixture in a Closed Vessel,
JSME International Journal, Series II, Vol.31, No.1, (1988-2), pp.140-149.
Tomita, E. and Hamamoto, Y.,
The Effect of Turbulence on Combustion in Cylinder of a Spark-Ignition Engine
- Evaluation of Entrainment Model,
SAE Int. Congress and Exposition, (1988-2), Paper No.880128, pp.1-12.
Tanaka, Y., Hamamoto, Y. and Tomita, E.,
Three-dimensional analysis for explosions of a propane-air mixture in cylindrical vessels,
Computational Mechanics (International Journal), No.3 (1988), pp.229-239.
Izumi, M., Hamamoto, Y. and Tomita, E.,
Turbulent Premixed Flames in a Closed Combustion Chamber-Photographic Study,
Proc. of the 1st KSME-JSME Thermal and Fluids Engineering Conference,
(1988-12), Vol.1, pp.389-394.
Hamamoto, Y. and Tomita, E.,
Turbulence Characteristics of Swirl in an I.C. Engine Cylinder,
JSAE Review, Vol.9, No.4, (1988), pp.4-9.
Hamamoto, Y. and Tomita, E.,
Swirl and Turbulence in an Engine Cylinder,
Proc. of 10th Task Leaders Meeting, Int. Energy Agency Working Party
on Conservation in Combustion, (1988-9), pp.79-84.
Hamamoto, Y., Tomita, E., Tanaka, Y., Katayama, T. and Tamura, Y.,
The Effect of Swirl on Spark-Ignition Engine Combustion,
JSME International Journal, Vol.30, No.270, (1987-12), pp.1995-2002.
Koga, R., Kosaka, M., Hamamoto, Y., Sano, H. and Tomita, E.,
Measuring the Mass Fraction Burned of a Methane-Air Mixture
by Diode-Laser Absorption Spectrometry,
Laser Diagnostics and Modeling of Combustion,
(eds., K. Iinuma, T. Asanuma, T. Ohsawa and J. Doi), (1987), pp.147-154, Springer-Verlag.
Hamamoto, Y. and Tomita, E.,
Turbulent Combustion in the Cylinder of a Spark-Ignition Engine,
Laser Diagnostics and Modeling of Combustion,
(eds., K. Iinuma, T. Asanuma, T. Ohsawa and J. Doi), (1987), pp.235-242, Springer-Verlag.
Tanaka, Y., Hamamoto, Y. and Tomita, E.,
Analysis of Laminar Flame Development in a Spherical Vessel,
Bulletin of JSME, Vol.29, No.251, (1986-5), pp.1506-1513.
Tanaka, Y., Hamamoto, Y. and Tomita, E.,
Three Dimensional Analysis of the Explosions of Quiescent and Laminar Swirling Mixtures
in Cylindrical Vessels,
Proc. of Int. Conf. on Computational Mechanics, (1986-5), pp.VIII-135-140.
Hamamoto, Y., Wakisaka, T., Tomita, E. and Nakata, T.,
Unburned Hydrocarbons in a Spark-ignition Engine Cylinder,
Bulletin of JSME, Vol.28, No.237, (1985-3), pp.461-467.
Hamamoto, Y., Tomita, E., Tanaka, T. and Katayama, T.,
The Effect of Swirl on Spark-Ignition Engine Combustion,
Proc. of Int. Symp. on Diagnostics and Modeling of Combustion in Reciprocating Engines
(COMODIA85), (1985-9), pp.413-422.
Koga, R., Kosaka, M., Sano, H., Hamamoto, Y. and Tomita, E.,
Burn Rate Measurement of Methane-Air Mixture in a Spherical Vessel
by a Diode-Laser Absorption Spectrometry,
Proc. of Int. Symp. on Diagnostics and Modeling of Combustion in Reciprocating Engines
(COMODIA85), (1985-9), pp.241-248.
