车用发动机燃用天然气掺氢燃料的性能计算分析与研究  

Computation and Study on Performance of Vehicle Engine Fuelled with Hydrogen Enriched CNG

作　　者：李明海[1] 王娟[1] 崔洪江[1] 马凡华[2] 欧阳明高[2] 

机构地区：[1]大连交通大学交通运输学院,大连116028 [2]清华大学汽车安全与国家重点实验室,北京100084

出　　处：《内燃机工程》2009年第4期24-27,33,共5页Chinese Internal Combustion Engine Engineering

基　　金：国家"八六三"高技术研究发展计划项目(2006AA11A1B7);汽车安全与节能国家重点实验室开放基金项目(KF2007-07)

摘　　要：为了研究天然气掺氢发动机的燃烧特性,从模拟试验的角度运用大型发动机软件建立了6缸火花点火天然气掺氢发动机的虚拟样机,并经过试验验证该模型基本准确。通过仿真计算得出,天然气发动机在掺入氢气之后,提高了燃烧速度,明显拓宽了发动机的稀燃极限。在掺入氢气30%(体积百分比)时,发动机的综合性能指标较好;提高压缩比,指示热效率得到提高。In order to study the combustion characteristic of vehicle engine fuelled with hydrogen enriched CNG（HCNG）, a virtual model was established by means of simulation test method. The virtual model was validated by testing. The computed result shows that the burning rate of engine increases, and the lean burn limit is enlarged greatly when hydrogen is added in CNG. The study shows that the engine has a better power performance and fuel economy. When the engine is fuelled with HCNG containing 30% hydrogen. With the higher compression ratio, the indicated efficiency can further increase.

关 键 词：内燃机 天然气掺氢发动机 稀燃极限 掺氢比 计算 

分 类 号：TK464[动力工程及工程热物理—动力机械及工程]