电控喷射稀燃天然气发动机的开发  

Development of Electronically-Controlled Injection Lean Burn CNG Engine

作　　者：窦慧莉[1] 刘忠长[2] 李骏[1] 李建群[1] 闫涛[1] 

机构地区：[1]中国第一汽车集团公司技术中心,吉林长春130011 [2]吉林大学内燃机系,吉林长春130025

出　　处：《内燃机学报》2007年第2期137-143,共7页Transactions of Csice

基　　金：国家863计划"节能与新能源汽车"攻关项目(2006AA11A1A6)

摘　　要：进行了发动机进气系统、燃烧系统、天然气供给系统、点火系统和电控系统等的设计。研究了天然气发动机稀薄燃烧规律,提出了空燃比分区控制的稀薄燃烧控制方案,实现了不采用EGR情况下NOx排放物的有效控制,仅通过匹配氧化催化转化器,使发动机排放达到了欧Ⅲ(ESC)法规要求。试验结果表明,CA6SE1-21N天然气发动机不仅达到了原柴油机的标定功率水平,而且具有良好的可靠性。Designing of CNG engine in intake system, combustion system, CNG supplying system, ignition system and electronic control system was preformed, and lean-burn characteristics of CNG engine were studied. A strategy of lean burn combustion by separately controlling air/fuel ratio at different zones was put forward. Exhaust NOx emission was effectively controlled without using EGR. The CNG engine can meet Euro Ⅲ （ESC） regulation requirement with oxidation catalytic converter. The test results show that CA6SE1-21N CNG engine maintains the rated power of base diesel engine and has high durability.

关 键 词：天然气发动机 结构开发 稀薄燃烧 排放 

分 类 号：TK464[动力工程及工程热物理—动力机械及工程]