基础燃料均质压燃燃烧特性的数值计算  

Numerical study on the characteristics of HCCI combustion process of primary reference fuels

作　　者：张庆峰[1] 郑朝蕾[1] 何祖威[1] 王迎[1] 

机构地区：[1]重庆大学低品位能源利用技术及系统教育部重点实验室,重庆400044

出　　处：《重庆大学学报（自然科学版）》2010年第6期91-95,105,共6页Journal of Chongqing University

基　　金：国家科技支撑计划资助项目(2009BAG13B01);内燃机燃烧学国家重点实验室资助项目(SKLE200901)

摘　　要：结合详细化学反应动力学机理,利用CHEMKIN软件计算了基础燃料均质压燃燃烧(HCCI)的过程,并与单缸HCCI燃烧试验作出对比。研究了燃料成分、压缩比、燃空当量比、初始温度、初始压力对HCCI发动机燃烧的影响。计算结果表明:随着燃料辛烷值的增加,着火延迟期增加;压缩比、当量比、初始温度、初始压力的变化对燃烧着火时刻有显著影响,同时不难看出,基础燃料HCCI燃烧运行工况范围是有限制的。The combustion process of HCCI engine fueled by primary reference fuels is simulated using the CHEMKIN software, and the results are compared with a combustion experiment of a HCCI engine. The cluthors study the influence of various factors, including fuel composition, compression ratio, equivalence ratio, initial temperature and initial pressure, on HCCI engine fueled with PRF. The results indicate that the ignition delay increases along with the increase of the octane number. The initial temperature, initial pressure, compression ratio, equivalence ratio have significant effects on the ignition timing. The operating range of the combustion on HCCI engine is limited.

关 键 词：基础燃料 内燃机 均质充量压燃 参数 着火延迟期 

分 类 号：TK464[动力工程及工程热物理—动力机械及工程]