Characteristics of combustion stability and emission in SCCI and CAI combustion based on direct-injection gasoline engine

Changhee Lee, Eiji Tomita, Kihyung Lee

Research output: Contribution to journalConference article

6 Citations (Scopus)

Abstract

Emissions remain a critical issue affecting engine design and operation, while energy conservation is becoming increasingly important. One approach to favorably address these issues is to achieve homogeneous charge combustion and stratified charge combustion at lower peak temperatures with a variable compression ratio, a variable intake temperature and a trapped rate of the EGR using NVO (negative valve overlap). This experiment was attempted to investigate the origins of these lower temperature auto-ignition phenomena with SCCI and CAI using gasoline fuel. In case of SCCI, the combustion and emission characteristics of gasoline-fueled stratified-charge compression ignition (SCCI) engine according to intake temperature and compression ratio was examined. We investigated the effects of relative air/fuel ratio, residual EGR rate and injection timing on the CAI combustion area. In addition, the effect of injection timing on combustion factors such as the start of combustion, its duration and its heat release rate was also investigated.

Original languageEnglish
JournalSAE Technical Papers
DOIs
Publication statusPublished - Jan 1 2007
EventJSAE/SAE International Fuels and Lubricants Meeting, JSAE 2007 - Kyoto, Japan
Duration: Jul 23 2007Jul 23 2007

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution

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