[가솔린엔진] 스파크 점화기관에서 CNG 연료가 시동 초기 HC 배출량에 미치는 영향에 관한 연구 = A Study of the Effects of CNG Fuel on the Cold start Total Hydrocarbon Emission in a Spark Egnition Engine

다국어 초록 (Multilingual Abstract)

The amount of total hydrocarbon was measured using Fill for a 4 cylinder 51 engine fueled with gasoline and CNG fuel. When CNG fuel was used instead of gasoline fuel, HC emission was reduced by considerable amount, particularly in the condition of cold start. Advancing the spark timing HC emission increased because of insufficient secondary oxidation by post flame. HC emission concentration of high coolant temperature start condition was lower than those of cold start condition, because in-cylinder oxidation increased and crevice volume decreased as coolant temperature rises. In the case of using CNG fuel for different AIF, smallest amount HC emission was produced at ?? =1.15. This means that combustion is stable and flame propagation speed is faster in the neighbor of ??=1.15 than that of the other region. In the presence of swirl flow effect, HC emission was reduced at stoichometric equivalence ratio, but increased in the other region.

목차 (Table of Contents)

• ABSTRACT
  
• 1.서론
  
• 2.실험 방치
  
• 3.실험
  
• 4.실험 결과 및 고찰
  
• 5.결론
  
• 참고문헌