LPG在点燃式发动机上的稀限判别

吉林大学学报(工学版) ›› 2002, Vol. ›› Issue (4): 7-11.

LPG在点燃式发动机上的稀限判别

王振锁¹, 邓宝清¹, 李理光², 肖宗成¹, 王惠萍¹

1. 吉林大学, 汽车工程学院, 吉林, 长春, 130025;
2. 上海交通大学, 机械与动力工程学院, 上海, 200030

收稿日期:2002-05-28
基金资助:
国家教育部骨干教师基金资助项目;国家技术创新基金资助项目(国经贸技(1998)345号)

Judgement of Lean Burn Limit for SI Engine Using LPG

WANG Zhen-suo¹, DENG Bao-qing¹, LI Li-guang², XIAO Zong-cheng¹, WANG Hui-ping¹

1. College of Automobile Engineering, Jilin University, Changchun 130025, China;
2. College of Mechanical and Power Engineering, Shanghai Jiaotong University, Shanghai 200030, China

Received:2002-05-28

摘要/Abstract

摘要： 介绍了LPG在小型点燃式发动机上应用时稀限判别方法的定义与选取.研究结果表明:扭矩波动、转速波动、HC排放值和HC升高率都受空燃比的影响,并且它们的变化趋势具有较好的一致性;随着空燃比的变化,转速波动变化不明显,受发动机结构参数和运行参数的影响,用于判别稀限的HC排放值较难确定,因此把扭矩波动和HC升高率作为稀限的判断条件比较合理.

关键词: LPG, 点燃式发动机, 稀限判别

Abstract: Definition and the selection of lean burn limit in small SI LPG engine is studied.Test results show that fluctuation of torque output and engine speed,HC emission and its rise ratio are all affected by excess air ratio.Change of those parameters appears to have similar trend versus excess air ratio except fluctuation of engine speed which is not prominent.It is found that the HC emission level is invalid to use as a judgment criterion for lean burn limit.Fluctuation of torque output and rising ratio of HC emission are sensitive to excess air ratio to be selected as parameters to judge LPG engine lean burn limit.

Key words: LPG, SI engine, judgement of lean burn limit

中图分类号:

TK464

王振锁, 邓宝清, 李理光, 肖宗成, 王惠萍. LPG在点燃式发动机上的稀限判别[J]. 吉林大学学报(工学版), 2002, (4): 7-11.

WANG Zhen-suo, DENG Bao-qing, LI Li-guang, XIAO Zong-cheng, WANG Hui-ping. Judgement of Lean Burn Limit for SI Engine Using LPG[J]. 吉林大学学报(工学版), 2002, (4): 7-11.

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