• 1499 Citations
  • 21 h-Index
19952019
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Research Output 1995 2019

2019

3D CFD of auto-ignition at the end gas region in dual-fuel gas engine

Kawahara, N. & Tomita, E., Jan 1 2019.

Research output: Contribution to conferencePaper

Dual fuel engines
spontaneous combustion
Gas engines
Gas fuels
charge flow devices

End-gas autoignition characteristics of PREMIER combustion in a pilot fuel-ignited dual-fuel biogas engine

Valipour Berenjestanaki, A., Kawahara, N., Tsuboi, K. & Tomita, E., Oct 15 2019, In : Fuel. 254, 115634.

Research output: Contribution to journalArticle

Biofuels
Biogas
Ignition
Gases
Engines
2018
3 Citations (Scopus)
pressure oscillations
spark ignition
Gas engines
natural gas
Internal combustion engines

Numerical Investigation of Natural Gas-Diesel Dual Fuel Engine with End Gas Ignition

Talekar, A., Lai, M. C., Tomita, E., Kawahara, N., Zeng, K. & Yang, B., Jan 1 2018, In : SAE Technical Papers. 2018-April

Research output: Contribution to journalConference article

Dual fuel engines
Ignition
Diesel engines
Natural gas
Gases
2017
2 Citations (Scopus)

Characterisation of DME-HCCI combustion cycles for formaldehyde and hydroxyl UV–vis absorption

Azimov, U., Stylianidis, N., Kawahara, N. & Tomita, E., Dec 15 2017, In : Fuel. 210, p. 578-591 14 p.

Research output: Contribution to journalArticle

Formaldehyde
Hydroxyl Radical
Ignition
Ethers
Temperature
6 Citations (Scopus)

Chemical kinetics and CFD analysis of supercharged micro-pilot ignited dual-fuel engine combustion of syngas

Stylianidis, N., Azimov, U., Maheri, A., Tomita, E. & Kawahara, N., Sep 1 2017, In : Fuel. 203, p. 591-606 16 p.

Research output: Contribution to journalArticle

Dual fuel engines
Reaction kinetics
Dynamic analysis
Computational fluid dynamics
Hydrogen
1 Citation (Scopus)
Dual fuel engines
Reaction kinetics
Dynamic analysis
Computational fluid dynamics
Ignition

High-speed visualization of fuel spray impingement in the near-wall region using a DISI injector

Kawahara, N., Kintaka, K. & Tomita, E., 2017, Selected Papers from the 31st International Congress on High-Speed Imaging and Photonics. SPIE, Vol. 10328. 1032817

Research output: Chapter in Book/Report/Conference proceedingConference contribution

fuel sprays
Injector
impingement
Spray
splashing
4 Citations (Scopus)
hydrogen engines
Hydrogen engines
thermodynamic efficiency
nitrogen oxides
Direct injection

Multidimensional CFD simulation of diesel spray combustion using chemical kinetics

Kawahara, N., Takeda, N. & Tomita, E., 2017, COMODIA 2017 - 9th International Conference on Modeling and Diagnostics for Advanved Engine Systems. Japan Society of Mechanical Engineers

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Reaction kinetics
Computational fluid dynamics
Drop breakup
Velocimeters
Ignition

Visualization of combustion processes of internal combustion engines

Kawahara, N., Aug 30 2017, The Micro-World Observed by Ultra High-Speed Cameras: We See What You Don't See. Springer International Publishing, p. 261-275 15 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

internal combustion engines
High speed cameras
Internal combustion engines
Visualization
high speed cameras
2016
22 Citations (Scopus)
cogeneration
Biogas
Nitrogen oxides
nitrogen oxides
Internal combustion engines
11 Citations (Scopus)

Combustion characteristics of wet ethanol ignited using a focused Q-switched Nd: YAG nanosecond laser

Rahman, K. M., Kawahara, N., Tsuboi, K. & Tomita, E., Feb 1 2016, In : Fuel. 165, p. 331-340 10 p.

Research output: Contribution to journalArticle

Ethanol
Lasers
Ignition
Water
Water content
1 Citation (Scopus)

Densitometry and temperature measurement of combustion gas by X-ray Compton scattering

Sakurai, H., Kawahara, N., Itou, M., Tomita, E., Suzuki, K. & Sakurai, Y., Mar 1 2016, In : Journal of Synchrotron Radiation. 23, 2, p. 617-621 5 p.

Research output: Contribution to journalArticle

Compton scattering
X ray scattering
Temperature measurement
temperature measurement
Gases
17 Citations (Scopus)
Fuel injection
Ignition
Natural gas
Compaction
Gases
14 Citations (Scopus)

Local fuel concentration measurement through spark-induced breakdown spectroscopy in a direct-injection hydrogen spark-ignition engine

Rahman, K. M., Kawahara, N., Matsunaga, D., Tomita, E., Takagi, Y. & Mihara, Y., Aug 24 2016, In : International Journal of Hydrogen Energy. 41, 32, p. 14283-14292 10 p.

Research output: Contribution to journalArticle

Hydrogen engines
spark ignition
Direct injection
sparks
Internal combustion engines
2 Citations (Scopus)

Quantum cascade laser assisted time-resolved measurements of carbon dioxide absorption during combustion in DME-HCCI engine

Azimov, U., Kawahara, N. & Tomita, E., Oct 15 2016, In : Fuel. 182, p. 807-815 9 p.

Research output: Contribution to journalArticle

Quantum cascade lasers
Time measurement
Carbon Dioxide
Ignition
Carbon dioxide
2015
5 Citations (Scopus)
sparks
Electric sparks
vessels
breakdown
Spectroscopy
4 Citations (Scopus)

Effect of Bio-Gas Contents on SI Combustion for a Co-Generation Engine

Kim, Y., Kawahara, N., Tomita, E., Oshibe, H. & Nishikawa, K., Sep 1 2015, In : SAE Technical Papers. 2015-September, September

Research output: Contribution to journalArticle

Biogas
Engines
Carbon dioxide
Air intakes
Global warming
2 Citations (Scopus)
Dual fuel engines
Gas engines
Gas fuels
Methane
Engines
1 Citation (Scopus)

Experimental study on combustion characteristics of wet ethanol ignited by Laser-induced breakdown

Rahman, K. M., Kawahara, N., Tsuboi, K. & Tomita, E., Apr 20 2015, Laser Ignition Conference, LIC 2015. OSA - The Optical Society

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ethanol
ethyl alcohol
breakdown
ignition
Ignition
11 Citations (Scopus)

Spark discharge ignition process in a spark-ignition engine using a time series of spectra measurements

Kawahara, N., Hashimoto, S. & Tomita, E., Dec 1 2015, In : Proceedings of the Combustion Institute. 36, 3, p. 3451-3458 8 p.

Research output: Contribution to journalArticle

spark ignition
electric sparks
Internal combustion engines
Electric sparks
ignition
2014
15 Citations (Scopus)

Laser-induced plasma generation and evolution in a transient spray

Kawahara, N., Tsuboi, K. & Tomita, E., Jan 13 2014, In : Optics Express. 22, 1

Research output: Contribution to journalArticle

plasma generators
sprayers
lasers
fuel sprays
high speed cameras
6 Citations (Scopus)
Direct injection
sparks
Electric sparks
vessels
Visualization

In-cylinder observations of chemiluminescence in turbulent premixed flames using a spark plug sensor with an optical fiber

Kawahara, N., Inoue, A. & Tomita, E., 2013, SAE Technical Papers. Vol. 11.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Spark plugs
Chemiluminescence
Engine cylinders
Optical fibers
Internal combustion engines

Interaction between laser-induced plasma and fuel spray

Kawahara, N., 2013, In : The 1st Laser Ignition Conference. LIC83, p. 1-2 2 p.

Research output: Contribution to journalArticle

16 Citations (Scopus)
spark ignition
Direct injection
Internal combustion engines
engines
Hydrogen
2 Citations (Scopus)

Mixing process of direct injection hydrogen jet in a constant volume vessel by using spark-induced breakdown spectroscopy

Bin Abdul Rahman, M. T., Kawahara, N. & Tomita, E., 2013, SAE Technical Papers. Vol. 11.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Direct injection
Electric sparks
Spectroscopy
Hydrogen
Spark plugs
142 Citations (Scopus)
Exhaust gas recirculation
Ignition
Diesel engines
Nitrogen oxides
Soot

Spectrum analysis of chemiluminescence of a low sooting PCCI diesel engine operating with moderately early injection timing

Kiplimo, R., Tomita, E., Kawahara, N. & Yokobe, S., 2012, Proceedings of the 8th International Conference on Modeling and Diagnostics for Advanced Engine Systems, COMODIA 2012. p. 410-415 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Spectrum Analysis
Diesel Engine
Chemiluminescence
Combustion
Spectrum analysis
18 Citations (Scopus)

UV-visible light absorption by hydroxyl and formaldehyde and knocking combustion in a DME-HCCI engine

Azimov, U., Kawahara, N. & Tomita, E., Aug 2012, In : Fuel. 98, p. 164-175 12 p.

Research output: Contribution to journalArticle

Formaldehyde
Hydroxyl Radical
Light absorption
Ignition
Engines
2011
35 Citations (Scopus)

Comparison of performance and emissions of a supercharged dual-fuel engine fueled by hydrogen and hydrogen-containing gaseous fuels

Roy, M. M., Tomita, E., Kawahara, N., Harada, Y. & Sakane, A., Jun 2011, In : International Journal of Hydrogen Energy. 36, 12, p. 7339-7352 14 p.

Research output: Contribution to journalArticle

Dual fuel engines
gaseous fuels
hydrogen fuels
engines
Hydrogen
14 Citations (Scopus)
diesel engines
Infrared lasers
residual gas
infrared lasers
Diesel engines
34 Citations (Scopus)
exhaust emission
Dual fuel engines
synthesis gas
ignition
Ignition
7 Citations (Scopus)

Effects of injection pressure, timing and EGR on combustion and emissions characteristics of diesel PCCI engine

Kiplimo, R., Tomita, E., Kawahara, N., Zhou, S. & Yokobe, S., Jan 1 2011, In : SAE Technical Papers.

Research output: Contribution to journalArticle

Diesel engines
Smoke
Engines
Exhaust gas recirculation
Fuel consumption
7 Citations (Scopus)

High-pressure hydrogen jet and combustion characteristics in a direct-injection hydrogen engine

Roy, M. K., Kawahara, N., Tomita, E. & Fujitani, T., Jan 1 2011, In : SAE Technical Papers.

Research output: Contribution to journalArticle

Hydrogen engines
Direct injection
Electric sparks
Hydrogen
Ignition
9 Citations (Scopus)
Dual fuel engines
Ignition
Gases
22 Citations (Scopus)
Dual fuel engines
synthesis gas
computational fluid dynamics
Reaction kinetics
engines
45 Citations (Scopus)
Dual fuel engines
Gas engines
Ignition
Natural gas
Gases