Investigation on firing behavior of spark-ignition engine fueled with methanol, LPG and methanol/LPG during cold start
The objective of this investigation is to compare the transient firing behavior of a spark-ignition engine fueled with methanol，LPG and methanol/LPG respectively during cold start by means of cycle-by-cycle control strategy. The ambient temperature affects methanol engine reliable cold start the most significantly，the amount of methanol injected per cycle takes the second place. When the ambient temperature is below 16℃，the methanol engine can not be started reliably without auxiliary start-aids even at a large amount of methanol injected per cycle under low injection pressure. The amount of fuel injected per cycle affects LPG and methanol/LPG engine cold start reliability significantly. A proper amount of fuel injected per cycle can assure reliable start of LPG and methanol/LPG engine. If the injection timings of methanol and LPG are controlled reasonably at cold start，methanol and methanol/LPG engine may realize the ideal next cycle firing after fuel injection.
Spark-ignition engine Methanol LPG Cold start Cycle-by-cycle control Firing behavior
Changming Gong Shu Wang Yan Su Baoqing Deng Qing Gao Xunjun Liu
College of Automotive Engineering,Jilin University,Changchun 130022,People ”s Republic of China National NGV Engineering Research Institute,China Automotive Engineering Research Institute,Chongqin
国内会议
长春
英文
1-12
2008-07-17（万方平台首次上网日期，不代表论文的发表时间）