• 1615 Citations
  • 22 h-Index
19952019

Research output per year

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Research Output

2011
10 Citations (Scopus)

Multidimensional CFD simulation of syngas combustion in a micro-pilot-ignited dual-fuel engine using a constructed chemical kinetics mechanism

Azimov, U., Okuno, M., Tsuboi, K., Kawahara, N. & Tomita, E., Oct 1 2011, In : International Journal of Hydrogen Energy. 36, 21, p. 13793-13807 15 p.

Research output: Contribution to journalArticle

24 Citations (Scopus)

Premixed mixture ignition in the end-gas region (PREMIER) combustion in a natural gas dual-fuel engine: Operating range and exhaust emissions

Azimov, U., Tomita, E., Kawahara, N. & Harada, Y., Oct 1 2011, In : International Journal of Engine Research. 12, 5, p. 484-497 14 p.

Research output: Contribution to journalArticle

50 Citations (Scopus)

非定常噴霧におけるレーザ誘起プラズマによる着火特性

Kawahara, N., 2011, In : 微粒化.

Research output: Contribution to journalArticle

2010

An experimental investigation on engine performance and emissions of a supercharged H2-diesel dual-fuel engine

Roy, M. M., Tomita, E., Kawahara, N., Harada, Y. & Sakane, A., Jan 1 2010, In : International Journal of Hydrogen Energy. 35, 2, p. 844-853 10 p.

Research output: Contribution to journalArticle

67 Citations (Scopus)

Characterization of the spray of the DISI multi-hole injector by means of phase doppler anemometer

Ahmed, F., Kawahara, N., Tomita, E. & Sumida, M., Oct 1 2010, In : Journal of Thermal Science and Technology. 5, 1, p. 36-50 15 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Direct microscopic image and measurement of the atomization process of a port fuel injector

Esmail, M., Kawahara, N., Tomita, E. & Sumida, M., Jan 1 2010, In : Measurement Science and Technology. 21, 7, 075403.

Research output: Contribution to journalArticle

22 Citations (Scopus)

Evaluation of the flame lift-off length in diesel spray combustion based on flame extinction

Azimov, U., Kawahara, N., Tomita, E. & Tsuboi, K., Dec 10 2010, In : Journal of Thermal Science and Technology. 5, 2, p. 238-251 14 p.

Research output: Contribution to journalArticle

10 Citations (Scopus)

In situ fuel concentration measurement near a spark plug in a spray-guided direct-injection spark-ignition engine using infrared absorption method

Kawahara, N., Tomita, E., Kadowaki, T., Honda, T. & Katashiba, H., Oct 1 2010, In : Experiments in Fluids. 49, 4, p. 925-936 12 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)
2009

Effect of EGR on combustion and exhaust emissions in supercharged dual-fuel natural gas engine ignited with diesel fuel

Tomita, E., Harada, Y., Kawahara, N. & Sakane, A., Jan 1 2009, In : SAE Technical Papers.

Research output: Contribution to journalConference article

19 Citations (Scopus)

Effect of fuel injection parameters on engine performance and emissions of a supercharged producer gas-diesel dual fuel engine

Roy, M. M., Tomita, E., Kawahara, N., Harada, Y. & Sakane, A., Jan 1 2009, In : SAE Technical Papers.

Research output: Contribution to journalConference article

6 Citations (Scopus)

Fuel concentration measurement of premixed mixture using spark-induced breakdown spectroscopy

Kawahara, N., Tomita, E., Takemoto, S. & Ikeda, Y., Oct 1 2009, In : Spectrochimica Acta - Part B Atomic Spectroscopy. 64, 10, p. 1085-1092 8 p.

Research output: Contribution to journalArticle

35 Citations (Scopus)

Laser-induced radical generation and evolution to a self-sustaining flame

Beduneau, J. L., Kawahara, N., Nakayama, T., Tomita, E. & Ikeda, Y., Mar 1 2009, In : Combustion and Flame. 156, 3, p. 642-656 15 p.

Research output: Contribution to journalArticle

44 Citations (Scopus)

Mixture formation process in a spark-ignition engine with ethanol blended gasoline

Kawahara, N., Tomita, E. & Kadowaki, T., Jan 1 2009, In : SAE Technical Papers.

Research output: Contribution to journalConference article

3 Citations (Scopus)

Performance and emission comparison of a supercharged dual-fuel engine fueled by producer gases with varying hydrogen content

Mohon Roy, M., Tomita, E., Kawahara, N., Harada, Y. & Sakane, A., Sep 1 2009, In : International Journal of Hydrogen Energy. 34, 18, p. 7811-7822 12 p.

Research output: Contribution to journalArticle

78 Citations (Scopus)

Performance and emissions of a supercharged dual-fuel engine fueled by hydrogen-rich coke oven gas

Roy, M. M., Tomita, E., Kawahara, N., Harada, Y. & Sakane, A., Dec 1 2009, In : International Journal of Hydrogen Energy. 34, 23, p. 9628-9638 11 p.

Research output: Contribution to journalArticle

16 Citations (Scopus)
5 Citations (Scopus)

Visualization of auto-ignition and pressure wave during knocking in a hydrogen spark-ignition engine

Kawahara, N. & Tomita, E., Apr 1 2009, In : International Journal of Hydrogen Energy. 34, 7, p. 3156-3163 8 p.

Research output: Contribution to journalArticle

79 Citations (Scopus)
2008

Effect of nozzle geometry on atomization of transient spray from port fuel injector

Esmail, M., Kawahara, N., Tomita, E. & Sumida, M., Dec 1 2008, p. 429-436. 8 p.

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Fuel spray and its measurement techniques

Kawahara, N. & Tomita, E., Nov 1 2008, In : Nihon Enerugi Gakkaishi/Journal of the Japan Institute of Energy. 87, 11, p. 897-902 6 p.

Research output: Contribution to journalReview article

Open Access

Spray behavior near the nozzle of a DISI Multi-hole injector using phase doppler anemometer

Ahmed, F., Kawahara, N., Tomita, E. & Sumida, M., Dec 1 2008, p. 445-452. 8 p.

Research output: Contribution to conferencePaper

層流予混合気におけるレーザ着火過程の高時間分解光学計測

Kawahara, N., 2008, In : 日本機械学会論文集(B編). 74, 743, p. 1633-1640 8 p.

Research output: Contribution to journalArticle

Auto-ignited kernels during knocking combustion in a spark-ignition engine

Kawahara, N., Tomita, E. & Sakata, Y., Sep 24 2007, In : Proceedings of the Combustion Institute. 31 II, p. 2999-3006 8 p.

Research output: Contribution to journalConference article

83 Citations (Scopus)
Open Access
4 Citations (Scopus)

Cycle-resolved measurements of the fuel concentration near a spark plug in a rotary engine using an in situ laser absorption method

Kawahara, N., Tomita, E., Hayashi, K., Tabata, M., Iwai, K. & Kagawa, R., Sep 24 2007, In : Proceedings of the Combustion Institute. 31 II, p. 3033-3040 8 p.

Research output: Contribution to journalConference article

36 Citations (Scopus)

Gas temperature measurement in a DME-HCCI engine using heterodyne interferometry with spark-plug-in fiber-optic sensor

Lee, C., Kawahara, N., Tomita, E. & Inoshita, K., Jan 1 2007, In : SAE Technical Papers.

Research output: Contribution to journalConference article

In situ measurement of water temperature with a sensor using interferometry

Tomita, E., Kawahara, N. & Toda, Y., Dec 1 2007, 2007 Proceedings of the ASME/JSME Thermal Engineering Summer Heat Transfer Conference - HT 2007. p. 727-733 7 p. (2007 Proceedings of the ASME/JSME Thermal Engineering Summer Heat Transfer Conference - HT 2007; vol. 3).

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

Residual gas fraction measurement inside engine cylinder using infrared absorption method with spark-plug sensor

Kawahara, N., Tomita, E. & Tanaka, Y., Jan 1 2007, In : SAE Technical Papers.

Research output: Contribution to journalConference article

4 Citations (Scopus)

Spatially, temporally, and spectrally resolved measurement of laser-induced plasma in air

Kawahara, N., Beduneau, J. L., Nakayama, T., Tomita, E. & Ikeda, Y., Mar 1 2007, In : Applied Physics B: Lasers and Optics. 86, 4, p. 605-614 10 p.

Research output: Contribution to journalArticle

68 Citations (Scopus)