CA4GD1型高性能低排放汽油机的开发  

Development of High-performance Low-emission CA4GD1 Gasoline Engine

作　　者：杜维明[1,2] 曲美兰[2] 李丰军[2] 夏春雨[2] 刘金玉[2] 王占峰[2] 陈立[2] 

机构地区：[1]吉林大学 [2]中国第一汽车集团公司技术中心

出　　处：《汽车技术》2011年第1期15-20,共6页Automobile Technology

摘　　要：进行了CA4GD1型发动机进气系统、燃烧系统、燃油喷射系统、点火系统和电控系统等的设计。在优化进气道形状的基础上,对不同进气管长度和不同压缩比对发动机性能的影响进行了研究。试验结果表明,CA4GD1汽油机升功率为54 kW/L,升转矩为92.6 N.m/L;经济油耗区域出现在中低速、中高负荷区域,且等油耗曲线在横向拉伸较长,可满足发动机负荷变化不大而转速变化较大的需求;排放满足国IV标准,并具有良好的可靠性。This paper introduces the designs for intake system,combustion system,fuel injection system,ignition system and electronic control system of CA4GD1 gasoline engine,optimizes inlet port shape and analyzes the influence of different length of intake manifold and different compression ratio on engine performance.The test results show that CA-4GD1 engine performance target reaches 54 kW/L and 92.6 N·m/L;the economic fuel consumption area occurs in the medium-low speed and medium-high load area,in addition,the constant fuel consumption curve extends transversely,which can satisfy the demand of small engine load variation whereas substantial speed variation;emissions meeting China IV,the engine has high durability.

关 键 词：汽油机 设计 性能 排放 

分 类 号：U464.171[机械工程—车辆工程]