进气混氢对汽油机性能的影响  

Effect of Hydrogen Addition to the Intake Air on Gasoline Engine Performance and Emissions

作　　者：纪常伟[1] 闫皓[1] 汪硕峰[1] 马宁[1] 

机构地区：[1]北京工业大学,环境与能源工程学院,北京100124

出　　处：《北京工业大学学报》2009年第5期659-663,共5页Journal of Beijing University of Technology

基　　金：北京市自然科学基金资助项目(3082004);国家自然科学基金资助项目(50522202).

摘　　要：进行了汽油机在怠速和2000r/min条件下的混氢实验,通过对比原机和混氢之后的缸压、排放和油耗,发现氢气的混入可以显著改善缸内燃烧,提高做功能力,对怠速时的排放也有所改善,2000r/min时混氢会使NO_x排放升高.混氢对燃烧的改善使燃油消耗率下降,起到了节油的作用.An experiment of hydrogen addition to a gasoline-fuelled SI engine was carried out at idle speed and at the speed of 2 000 r/min respectively.By comparing the original engine and the engine with hydrogen addition,it was found that hydrogen addition can improve combustion,increase power output and reduce the emissions at idle speed.In addition,with the improvement of combustion,brake specific fuel consumption was reduced.While at the speed of 2 000 r/min,the NO_x emissions were higher than that of the original engine.In a word,the addition of hydrogen to a gasoline-fuelled SI engine is a good method to improve engine performance.

关 键 词：汽油机 混氢 缸压 排放 油耗 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]