Combustion analysis of natural gas in a four stroke HCCI engine using experiment and elementary reactions calculation

Daesu Jun, Kazuaki Ishii, Norimasa Iida

研究成果: Conference contribution

14 被引用数 (Scopus)

抄録

Homogeneous charge compression ignition (HCCI) is regarded as the next generation combustion regime in terms of high thermal efficiency and low emissions. It is difficult to control autoignition and combustion because they are controlled primarily by the chemical kinetics of air/fuel mixture. In this study, it was investigated the characteristics of autoignition and combustion of natural gas in a four-stroke HCCI engine using experiment and elementary reactions calculation. The influence of equivalence ratio, intake temperature, intake pressure and engine speed on autoignition timing, autoignition temperature, combustion duration and the emissions of THC, CO, CO2 were investigated. And also, to clarify the influence of n-butane on autoignition and combustion of natural gas, it was changed the blend ratio of n-butane from 0 mol% to 10 mol% in methane/n-butane/air mixtures. The autoignition of natural gas occurs when in cylinder gas temperature reaches to 900K-1100K under these experiment and calculation conditions. To realize high combustion efficiency and low CO emissions, it is necessary to prepare operation conditions that the maximum cycle temperature is over 1500K. The autoignition temperature becomes lower with increasing the blend ratio of n-butane. As the blend ratio of n-butane increases, the maximum cycle temperature and combustion efficiency increases, and the emissions of THC, CO emissions decrease.

本文言語English
ホスト出版物のタイトルSAE Technical Papers
DOI
出版ステータスPublished - 2003
イベント2003 SAE World Congress - Detroit, MI, United States
継続期間: 2003 3 32003 3 6

Other

Other2003 SAE World Congress
国/地域United States
CityDetroit, MI
Period03/3/303/3/6

ASJC Scopus subject areas

  • 自動車工学
  • 安全性、リスク、信頼性、品質管理
  • 汚染
  • 産業および生産工学

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