进气温度对甲醇HCCI发动机燃烧特性和排放的影响  

The effect of intake temperature on combustion characteristic and emissions of methanol HCCI

作　　者：潘江如[1,2] 张春化[2] 鲁亚云[3] 

机构地区：[1]新疆工程学院机械工程系,新疆乌鲁木齐830091 [2]长安大学汽车学院,陕西西安710064 [3]新疆职业大学机械电子工程学院,新疆乌鲁木齐830013

出　　处：《河北工业大学学报》2014年第4期53-57,共5页Journal of Hebei University of Technology

基　　金：陕西省自然科学基础研究计划(2012JQ7031);中央高校基本科研业务费专项资金(2013G1502063);新疆工程学院博士启动基金(2013BQJ091607)

摘　　要：为研究进气温度对甲醇HCCI燃烧特性和排放的影响,在一台改造的实验发动机上进行相关的实验.试验结果表明,随着进气温度的升高,缸内压力升高,压力升高率变大,燃烧噪声较大;随着进气温度的升高,缸内温度升高,燃烧速度变快,瞬时放热率变大,燃烧始点提前,燃烧持续期缩短.HCCI燃烧方式的NO排放较低,NO排放对进气温度不敏感,进气温度升高,HC和CO排放迅速减少.In order to study the effects on combustion characteristic and emissions of methanol HCCI, the tests, varying intake temperature is conducted on a modified direct injection diesel engine fuelled with methanol. With the increase of intake temperature, the pressure in cylinder and pressure rising rate will become large. With the increase of intake tem- perature, both the temperature in cylinder the instantaneous and heat release rate are increased, combustion rate will be- come fast, combustion timing will be advanced, and combustion duration will be shortened. The NO~ emissions of HCCI are very low, which is more insensitive to intake temperature. With the increase of intake temperature, HC and CO em- issions will be rapidly reduced.

关 键 词：均质压燃 甲醇 燃烧特性 排放 进气温度 

分 类 号：TK464[动力工程及工程热物理—动力机械及工程]