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Position: Home > Articles > Effects of Ignition Timing on Alcohol-gasoline Blends Fuelled SI Engine Performance and Emissions Transactions of the Chinese Society for Agricultural Machinery 2008,39 (1) 33-36

醇类燃料点火提前角对汽油机性能和排放的影响

作  者:
魏衍举;吴刚;陈岳;刘圣华
单  位:
西安交通大学汽车工程系
关键词:
汽油机;性能;排放;点火提前角;醇类燃料
摘  要:
通过旋转分电器外壳改变点火提前角来研究其对燃用M20甲醇-汽油和E20乙醇汽油(甲醇、乙醇体积分数均为20%)混合燃料电喷汽油机的性能和排放的影响。试验结果表明:汽油机燃用M20和E20时最高压力点比纯汽油分别提前1°CA(曲轴转角)和0.5°CA,最佳点火提前角分别提前约2°CA和1°CA;随着点火提前角的增大,燃用2种燃料的汽油机性能和排放变化趋势相似,均表现为扭矩和功率增大,能量消耗率降低,CO、HC和NOx排放量增加。
译  名:
Effects of Ignition Timing on Alcohol-gasoline Blends Fuelled SI Engine Performance and Emissions
作  者:
Wei Yanju Wu Gang Chen Yue Liu Shenghua(Xi'an Jiaotong University)
关键词:
SI engine,Performance,Emissions,Ignition timing,Alternative fuel
摘  要:
Changing the advanced ignition angle by rotating the distributor housing,the effects of ignition timing on M20 and E20(20% methanol and ethanol by volume)alcohol-gasoline blends fuelled SI engine performance and exhaust emissions were experimentally investigated.The experimental results show that,compared with gasoline,M20 and E20 fuel blends advance the maximum burning pressure point by 1°CA(crank angle)and 0.5°CA,and the optimal ignition timing by about 2°CA and 1°CA respectively.The effects of ignition timing on engine power,fuel economy and exhaust emissions characteristics of two blends are similar.With the advance of ignition timing,engine power and brake torque increase,brake-specific energy consumption(BSEC,Bsec)decreases and the thermal efficiency is improved,however,CO,HC and NOx emissions are enhanced.

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