• 1635 Citations
  • 22 h-Index
19952019

Research output per year

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Research Output

Conference article

Hydrogen combustion and exhaust emissions ignited with diesel oil in a dual fuel engine

Tomita, E., Kawahara, N., Piao, Z., Fujita, S. & Hamamoto, Y., Jan 1 2001, In : SAE Technical Papers.

Research output: Contribution to journalConference article

53 Citations (Scopus)

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

Kawahara, N., Inoue, A. & Tomita, E., Jan 1 2013, In : SAE Technical Papers. 11

Research output: Contribution to journalConference article

5 Citations (Scopus)

In-situ fuel concentration measurement near spark plug by 3.392 μm infrared absorption method-application to spark ignition engine

Nishiyama, A., Kawahara, N. & Tomita, E., Jan 1 2003, In : SAE Technical Papers.

Research output: Contribution to journalConference article

9 Citations (Scopus)

In situ fuel concentration measurement near spark plug in spark-ignition engines by 3.39 μm infrared laser absorption method

Tomita, E., Kawahara, N., Yoshiyama, S., Kakuho, A., Itoh, T. & Hamamoto, Y., Jan 1 2002, In : Proceedings of the Combustion Institute. 29, 1, p. 735-741 7 p.

Research output: Contribution to journalConference article

23 Citations (Scopus)

In-situ unburned gas temperature measurement in a spark ignition engine using laser interferometry

Kawahara, N., Tomita, E., Ohnishi, K. & Goto, K., Jan 1 2005, In : SAE Technical Papers.

Research output: Contribution to journalConference article

5 Citations (Scopus)

In-spark-plug sensor for analyzing the initial flame and its structure in an SI engine

Ikeda, Y., Nishiyama, A., Kawahara, N., Tomita, E., Arimoto, S. & Takeuchi, A., Jan 1 2005, In : SAE Technical Papers.

Research output: Contribution to journalConference article

8 Citations (Scopus)

Measurement of flame propagation characteristics in an SI engine using micro-local chemiluminescence technique

Kawahara, N., Tomita, E., Takeuchi, A., Arimoto, S., Ikeda, Y. & Nishiyama, A., Jan 1 2005, In : SAE Technical Papers.

Research output: Contribution to journalConference article

12 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., Jan 1 2013, In : SAE Technical Papers. 11

Research output: Contribution to journalConference article

2 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)

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., 2018, In : SAE Technical Papers. 2018-April

Research output: Contribution to journalConference article

3 Citations (Scopus)

Plasma Temperature of Spark Discharge in a Lean-burn Spark-ignition Engine Using a Time Series of Spectra Measurements

Kawahara, N., Watanabe, M., Tomita, E., Nagano, Y. & Kitagawa, T., Dec 19 2019, In : SAE Technical Papers. December

Research output: Contribution to journalConference article

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)

Transient temperature measurement of gas using fiber optic heterodyne interferometry

Kawahara, N., Tomita, E. & Kamakura, H., Jan 1 2001, In : SAE Technical Papers.

Research output: Contribution to journalConference article

2 Citations (Scopus)

Transient temperature measurement of unburned gas in an engine cylinder using laser interferometry with a fiber-optic sensor

Kawahara, N., Tomita, E., Ichimiya, M., Takasu, K., Tsuchida, N. & Goto, K., Jan 1 2003, In : SAE Technical Papers.

Research output: Contribution to journalConference article

2 Citations (Scopus)
5 Citations (Scopus)
Conference contribution

Droplet dispersion and turbulent structure in a pressure-atomized spray flame

Kawahara, N., Ikeda, Y. & Nakajima, T., 1997, 35th Aerospace Sciences Meeting and Exhibit. American Institute of Aeronautics and Astronautics Inc, AIAA, AIAA Paper 97-0125

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

2 Citations (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, (Laser Ignition Conference, LIC 2015).

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

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, (Laser Ignition Conference, LIC 2015).

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

Fuel breakup near nozzle exit of high-pressure swirl injector for gasoline direct injection engine

Kawahara, N., Tomita, E., Kasahara, D., Nakayama, T. & Sumida, M., Jan 1 2004, 2004 SAE World Congress. SAE International

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

5 Citations (Scopus)

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

In-situ fuel concentration measurement near spark plug by 3.392 μm infrared absorption method-application to a port injected lean-burn engine

Nishiyama, A., Kawahara, N., Tomita, E., Fujiwara, M., Ishikawa, N., Kamei, K. & Nagashima, K., Jan 1 2004, 2004 SAE World Congress. SAE International

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

9 Citations (Scopus)

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

Local equivalence ratio measurement of CH4/air and C 3H8/air laminar flames by laser-induced breakdown spectroscopy

Ikeda, Y., Nishiyama, A., Kawahara, N., Tomita, E. & Nakayama, T., Dec 1 2006, Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting. p. 11586-11598 13 p. (Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting; vol. 16).

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

10 Citations (Scopus)

Measurements of the combustion characteristics of compound clusters in pressure-atomized spray flame

Kawahara, N., Ikeda, Y. & Nakajima, T., 1999, 37th Aerospace Sciences Meeting and Exhibit. American Institute of Aeronautics and Astronautics Inc, AIAA, AIAA 99-0210

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

2 Citations (Scopus)

Spatial and temporal characteristics of laser-induced air plasma

Kawahara, N., Tomita, E., Nakayama, T., Ikeda, Y. & Nishiyama, A., 2006, Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting. American Institute of Aeronautics and Astronautics Inc., p. 17586-17595 10 p. (Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting; vol. 23).

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

5 Citations (Scopus)
Paper

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

An aerosol nozzle that improves the spray agglomerative characteristics for optimal insecticide delivery to the target

Ikeda, Y., Kim, S. M., Horibe, Y., Takaki, S. & Kawahara, N., Dec 1 2006.

Research output: Contribution to conferencePaper

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)

Fiber-optic heterodyne interferometry temperature measurement of unburned gas in a HCCI engine fueled with DME

Kawahara, N., Tomita, E. & Ichimiya, M., Dec 1 2002. 1 p.

Research output: Contribution to conferencePaper

Flame propagation and combustion characteristics of stratified charge propane-air mixture with swirling flow in a constant-volume vessel

Nishiyama, A., Tomita, E., Kawahara, N., Yoshiyama, S. & Hamamoto, Y., Dec 1 2002. 1 p.

Research output: Contribution to conferencePaper

In-situ fuel concentration measurement near spark plug in spark-ignition engines by 3.39 μM infrared laser absorption method

Tomita, E., Kawahara, N., Yoshiyama, S., Kakuho, A., Itoh, T. & Hamamoto, Y., Jan 1 2002. 1 p.

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Multidimensional CFD simulation of diesel spray combustion using chemical kinetics

Kawahara, N., Takeda, N. & Tomita, E., 2017.

Research output: Contribution to conferencePaper

Multidimensional CFD simulation of diesel spray combustion using chemical kinetics

Kawahara, N., Takeda, N. & Tomita, E., Jan 1 2017.

Research output: Contribution to conferencePaper

PDA measurement of transient spray formed by a disi multi-hole injector

Kawahara, N., Tomita, E., Nakasuji, H. & Sumida, M., Dec 1 2006.

Research output: Contribution to conferencePaper

2 Citations (Scopus)

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., Dec 1 2012, p. 410-415. 6 p.

Research output: Contribution to conferencePaper

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

Review article

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