缸内直喷式汽油机冷起动控制策略  

Cold Start Control Strategy of Gasoline Direct Injection Engine

作　　者：齐万强[1,2] 于秀敏[1] 张允[1,3] 麻忠文[2] 季兵飞[2] 赵雪峰[1] 

机构地区：[1]吉林大学汽车仿真与控制国家重点试验室,长春130025 [2]空军航空大学航空控制工程系,长春130022 [3]长春工程学院电气与信息学院,长春130012

出　　处：《农业机械学报》2012年第7期7-12,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家高技术研究发展计划(863计划)资助项目(2006AA110107)

摘　　要：根据直喷式汽油机(GDI)冷起动的特性和冷起动的基本要求,设计了相应的冷起动控制策略。以前期自主设计的ECU电控系统和试验台架为基础,编写了冷起动控制策略程序,搭建了GDI发动机冷起动试验平台,进行了发动机冷起动控制策略试验研究。结果表明:按照冷起动各阶段的最优参数控制策略起动发动机,3个循环即可起动成功。发动机转速在1 023 r/min上下波动,转速波动率为6%,催化剂的起燃时间为38 s,起燃较快,且HC排放量较低,满足发动机冷起动过程的总体要求。The control strategy,on the basis of features and demands of cold start conditions,was developed and illustrated thoroughly.The experimental platform was built up and the program of the cold start control strategy was written based on the preliminary work of electronic control system and test bench,and the research on cold start was made.The results show that the engine starts by three cycles successfully with the optimal control parameters for each stage to control cold start process.The engine speed fluctuated around 1023r/min and the speed fluctuation rate was only 6%.The light-off time of the catalyst was 38s and HC emission was at lower lever.The control strategy can meet the general demands for GDI engine cold start.

关 键 词：直喷式汽油机 冷起动 控制策略 

分 类 号：TK413.74[动力工程及工程热物理—动力机械及工程]