汽车LPG燃料燃烧特性 - 交通运输工程学报 - 长安大学.PDF

第 3卷　第 2期 交 通 运 输 工 程 学 报 Vol. 3　No. 2 2003年 6月 Journal of Traffic and Transportation Engineering June 2003 　 : 1671-1637( 2003) 02-0045-03 LPG 1 2 2 谢晓敏 ,马志义 ,刘生全 ( 1. ,　200030; 2. , 　710064) 　: 为了对 LPG发动机燃烧系 的设计、开发提供理论支持,研究测试了不同转速、负荷下 LPG燃烧的示功图,计算分析了 LPG燃烧过程中压力、压力升高率、累计放热量、放热速率等影响 燃烧的主要参数,并与汽油相应工况下的燃烧特性进行了对比分析。结果表明, LPG在燃烧性能上 与汽油存在较大差异, LPG燃烧速度慢,燃烧持续时间长,而且在小负荷区域 LPG的燃烧完全程 度较差,随着负荷的增加燃烧情况改善。 : 汽车;燃料;液化石油气;燃烧特性 : U473. 21　　　: A Combustion characteristics of LPG fueled vehicle 1 2 2 - , - , - X IE X iao min MA Zhi yi L IU Sheng quan ( 1. Institute of Internal Combustion Engine, Shanghai Jiaotong University, Shanghai 200030, China; 2. , ′ , ′ 710064, ) School of Automobile Chang an University Xi an China Abstract: The work diagrams in different speeds and loads were measured, and the main parameters such as pressure rise rate of pressure heat release quantity and heat release rate, , were analyzed The results show that there are great differences between LPG and gasoline on. the combustion characteristics; the combustion velocity of LPG is slower, and the combustion duration is longer than gasoline; the combustion of LPGis imperfect when load is light, but it is . 1 ,9 , 7 . improved with load increasing tab figs refs Key words: vehicle; fuel; LPG; combustion characteristics Author resume: XIE Xiao-min ( 1975-) , female, doctoral student; LIU Sheng-quan, male, professor, 86-29-2334466,jtxny@ chd. edu.cn. 　　21, 1　 、, 、、