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The Study on Knock Characteristics of Heavy Duty LPG Engine  

황승환 (서울대학교 기계항공공학부)
이정원 (서울대학교 기계항공공학부 대학원)
민경덕 (서울대학교 기계항공공학부)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.10, no.5, 2002 , pp. 107-113 More about this Journal
Abstract
LPG has been well known as a clean alternative fuel for vehicles. Recently, several LPG engines for heavy duty vehicles have been developed, which can replace some diesel engines that are one of the main sources for air pollution in the urban area. Because cylinder bore of heavy duty LPG engine is larger than that of gasoline, the study of knock characteristics of LPG engine are needed. In this study, the knock characteristics were investigated with various engine speed, air excess ratios and LPG fuel compositions. Experimental results indicated that the Knock occurrence probability decreases with increasing engine speed and propane fraction of fuel. The Knock occurrence probability is highest at excess air ratio of 1 and decreases as the mixture strength became leaner.
Keywords
LPG engine; Knock; Excess air ratio; Engine speed; LPG fuel composition;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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