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Effects of CNG Heating Value on Combustion Characteristics of a Diesel-CNG Dual-Fuel Engine
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 Title & Authors
Effects of CNG Heating Value on Combustion Characteristics of a Diesel-CNG Dual-Fuel Engine
Kim, Yongrae; Jang, Hyeongjun; Lee, Janghee; Kim, Changgi;
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 Abstract
In this study, a dual fuel engine fueled with natural gas and diesel was tested to investigate the effects of heating value variation of CNG fuel. CNG substitution rate which is defined as the ratio of CNG and diesel supplied in a heating value basis was fixed at 80%. The higher heating value was varied from to by mixing nitrogen gas with pure CNG and diesel fuel was injected at a fixed injection timing. The engine test results showed that thermal efficiency and power output were decreased as the heating value of mixed CNG fuel was decreased. And the peak cylinder pressure was also decreased but the ignition delay time and the combustion duration and timing were almost same.
 Keywords
dual fuel engine;heating value variation;cng substitution rate;thermal efficiency;
 Language
Korean
 Cited by
1.
디젤자동차 용 소형 브라운가스 발생장치의 개발을 위한 가스 생성 특성에 관한 연구,김주회;안형환;

한국가스학회지, 2016. vol.20. 5, pp.34-39 crossref(new window)
2.
CNG 발열량 변화가 Diesel-천연가스 혼소엔진 배기 특성에 미치는 영향,장형준;윤준규;이선엽;김용래;김정환;김창기;

한국가스학회지, 2016. vol.20. 6, pp.43-49 crossref(new window)
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