Reduction of unburned hydrocarbon by hydrogen addition in DISC system

Toshiaki Kitagawa, Hiroyuki Kido, Joko Sulistyono, Daisuke Kuramoto

Research output: Contribution to journalArticle

Abstract

The direct injection stratified charge (DISC) combustion system has the ability to improve the thermal efficiency of spark ignition engine. Unfortunately it has an inherent problem to produce high level unburned hydrocarbon emissions, especially during light-load operations. In this work, a small amount of hydrogen was added to the air of charge in order to increase the burning velocity and reduce the hydrocarbon emissions. Higher combustion pressure and lower unburned hydrocarbon concentration were achieved by the hydrogen addition. Fast flame propagation was observed in the luminescence image of the CH radical. It can be thought that this improvement was caused by hydrogen properties of low flammability limit and large burning velocity.

Original languageEnglish
Pages (from-to)121-132
Number of pages12
JournalMemoirs of the Faculty of Engineering, Kyushu University
Volume57
Issue number3
Publication statusPublished - Sep 1997
Externally publishedYes

Fingerprint

Direct injection
Hydrocarbons
hydrogen
hydrocarbon
Hydrogen
combustion
luminescence
engine
Flammability
Internal combustion engines
Luminescence
air
Injection
Charge
Air
Combustion

All Science Journal Classification (ASJC) codes

  • Energy(all)
  • Atmospheric Science
  • Management of Technology and Innovation
  • Earth and Planetary Sciences(all)

Cite this

Reduction of unburned hydrocarbon by hydrogen addition in DISC system. / Kitagawa, Toshiaki; Kido, Hiroyuki; Sulistyono, Joko; Kuramoto, Daisuke.

In: Memoirs of the Faculty of Engineering, Kyushu University, Vol. 57, No. 3, 09.1997, p. 121-132.

Research output: Contribution to journalArticle

Kitagawa, Toshiaki ; Kido, Hiroyuki ; Sulistyono, Joko ; Kuramoto, Daisuke. / Reduction of unburned hydrocarbon by hydrogen addition in DISC system. In: Memoirs of the Faculty of Engineering, Kyushu University. 1997 ; Vol. 57, No. 3. pp. 121-132.
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