基于优化动力技术的多缸汽油HCCI发动机负荷拓展试验研究  

Experimental Study on Load Expanding of Multi-cylinder HCCI Gasoline Engine Based on OKP Technology

作　　者：邓家轩[1] 张旭洲[1] 李忠照[1] 章健勇[1,2] 黄震[1] 

机构地区：[1]上海交通大学燃烧与环境技术中心,上海200240 [2]上海乘用车研究中心,上海201804

出　　处：《车用发动机》2013年第2期26-30,共5页Vehicle Engine

基　　金：上海市重大基础研究项目(09DJ1400302)

摘　　要：搭建了基于优化动力技术(OKP)的4缸汽油HCCI发动机,在其上实现了稳定的HCCI燃烧,同时探索了这种策略能实现的负荷范围及表征HCCI负荷上边界和下边界的限制参数。试验结果表明:OKP技术相比其他策略能实现更高的HCCI负荷上边界;上边界的限制参数在低速时为最大循环压升率(λpmax),高速时则为最高燃烧压力(pmax),下边界的限制参数则是相对循环变动系数(Covpi);通过对燃烧相位和放热率曲线形状等参数的分析解释了这一规律。Based on the OKP technology, the system of 4-cylinder HCCI gasoline engine was built and then the stable HCCI combustion was realized. The load range of strategy and the upper and lower limit parameter indicating the HCCI load were ex- plored. The results show that, compared with other HCCI strategies, the OKP technology can realize the higher upper limit of load. The upper limit parameter at low speed is the maximum rate of pressure rise dp/dmax , while that at high speed is the maximum cylinder pressure p The lower limit parameter is the relative cycle variation coefficient Covpi . The analysis of combustion phase and heat release rate further explain the change rule.

关 键 词：均质压燃 优化动力技术 汽油机 负荷拓展 

分 类 号：TK411.28[动力工程及工程热物理—动力机械及工程]