柴油机预喷燃烧数值计算研究  

A Study on Digital Calculation of Pre-injection Combustion in Diesel Engines

作　　者：郭晓平[1] 王占杰[1] 许锋[1] 

机构地区：[1]大连理工大学,辽宁大连116024

出　　处：《内燃机》2005年第1期25-28,共4页Internal Combustion Engines

基　　金：国家科技部973项目(2001CB209202)

摘　　要：以KIVA-3为计算平台,数值模拟研究4气门直喷式柴油机不同预喷提前角的两段喷射燃烧历程。其结论是:上止点前150℃A以后的预喷提前角,其预喷与主喷柴油都以扩散燃烧为主;过大的预喷提前角将增加NOx生成和排放。Taking KIVA-3 as a calculation platform,this paper researches two processes of injection combustion of different pre-injection angle of advance in four-valve direct-injection diesel engines gy digital simulation.It concludes that pre-injection and main injection is mainly diffusive combustion in pre-injection angle of advance between upper dead point and 150?℃A;Bigger pre-injection angle of advance will increase the generation and exhaust.

关 键 词：柴油机 预喷 计算 燃烧 

分 类 号：TK421.2[动力工程及工程热物理—动力机械及工程]