点燃式缸内直喷甲醇发动机甲醛和未燃甲醇排放特性

›› 2012, Vol. 42 ›› Issue (04): 867-870.

点燃式缸内直喷甲醇发动机甲醛和未燃甲醇排放特性

宫长明¹, 张自雷¹, 贾京龙¹, 崔峰云¹, 郑伟²

1. 吉林大学汽车仿真与控制国家重点实验室, 长春 130022;
2. 中国农业机械工业协会, 北京 100083

收稿日期:2011-12-28 出版日期:2012-07-01 发布日期:2012-07-01
基金资助:
国家自然科学基金项目(51176063).

Formaldehyde and unburned methanol emissions from a spark-ignition direct-injection methanol engine

GONG Chang-ming¹, ZHANG Zi-lei¹, JIA Jing-long¹, CUI Feng-yun¹, ZHENG Wei²

1. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China;
2. China Association of Agriculture Machinery Manufacturers, Beijing 100083, China

Received:2011-12-28 Online:2012-07-01 Published:2012-07-01

摘要/Abstract

摘要： 基于气相色谱和液相色谱相结合的甲醛和甲醇测量方法,试验研究了点燃式缸内直喷甲醇发动机甲醇喷射正时、点火正时和过量空气系数在均质燃烧模式下对甲醛和未燃甲醇排放的影响。试验结果表明,甲醇喷射正时、点火正时和过量空气系数对该发动机甲醛和未燃甲醇排放有显著影响,并且甲醛和未燃甲醇排放随喷射正时、点火正时和过量空气系数的变化呈相反的变化趋势。推迟喷射甲醇、提前点火及采用稀混合气可以降低甲醛排放。

关键词: 动力机械工程, 缸内直喷, 点燃式发动机, 甲醇, 甲醛

Abstract: The effects of methanol injection timing, ignition timing and excess air ratio on formaldehyde and unburned methanol emissions from a spark-ignition direct-injection methanol engine under homogenous combustion mode were investigated experimentally by means of a measurement method in which the gas chromatography and the liquid chromatography were used to separate and measure formaldehyde and methanol. The results show that the methanol injection timing, ignition timing and excess air ratio affect significantly the formaldehyde and unburned methanol emissions from a spark-ignition direct-injection methanol engine. The variations in emitted formaldehyde and unburned methanol show opposite tendencies with the variations in the methanol injection timing, ignition timing and excess air ratio. Retarding methanol injection timing, advancing ignition timing and using lean mixture decrease formaldehyde emission.

Key words: power machinery and engineering, direct-injection, spark-ignition engine, methanol, formaldehyde

中图分类号:

TK464

宫长明, 张自雷, 贾京龙, 崔峰云, 郑伟. 点燃式缸内直喷甲醇发动机甲醛和未燃甲醇排放特性[J]. , 2012, 42(04): 867-870.

GONG Chang-ming, ZHANG Zi-lei, JIA Jing-long, CUI Feng-yun, ZHENG Wei. Formaldehyde and unburned methanol emissions from a spark-ignition direct-injection methanol engine[J]. , 2012, 42(04): 867-870.

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