供气系统参数变化对双燃料发动机低负荷排放的影响  

The Influence of Parameters Variation of Air and Natural Gas Supply System on Emissions of Dual-Fuel Engine at Lower Loads

作　　者：钟辉[1] 刘圣华[1] 刘传李[1] 王子延[1] 

机构地区：[1]西安交通大学能源与动力工程学院,陕西西安710049

出　　处：《内燃机学报》2001年第5期425-428,共4页Transactions of Csice

基　　金：国家教育部骨干教师基金资助项目 (2 90 5)

摘　　要：对空气和天然气供气系统的 2个参数——进气温度和空燃比进行了发动机试验。空燃比的调节包括进气节流和停缸 2种方式。试验结果表明 ,适当提高进气温度和合适的进气节流量都可以降低 THC和 CO排放 ,但 NOx 排放会增加。在低负荷时采用停缸技术 。In the study,engine tests were carried out on two parameters of air and natural gas supply system,which are intake temperature and A/F ratio including intake throttling and skip firing.It was found that increasing intake temperatue appropriately and seemly throttling quantity reduced THC and CO emissions,but increased NO x emission.At lower loads skip firing improved the emissions of the engine commendably.

关 键 词：双燃料发动机 供气系统 发动机 空燃比 低负荷排放 参数变化 汽车 

分 类 号：U464.173[机械工程—车辆工程]