小缸径直喷增压柴油机燃烧及放热规律研究  

Investigation on Combustion and Heat Release Rate of Small Direct-Injection Turbocharged Diesel Engine

作　　者：陆玲亚[1] 罗福强[1] 刘浩龙[1] 王晓勇[1] 梁昱[1] 

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013

出　　处：《拖拉机与农用运输车》2006年第3期30-31,共2页Tractor & Farm Transporter

基　　金：国家自然科学基金资助项目(50176016)

摘　　要：柴油机的燃烧过程与其动力性、经济性、排放特性、噪声及强度等直接有关,在很大程度上影响柴油机的综合性能。本文根据实测小缸径直喷增压柴油机不同负荷及转速时的气缸压力,分析其燃烧过程特性及放热规律。结果表明,为降低最大燃烧压力及NOx排放,小缸径直喷增压柴油机采用的喷油提前角较小,柴油机在大部分工况下,燃烧始点较迟,最大压力升高率、最大燃烧压力较低,其对应相位较迟,放热规律也较低。The combustion process of diesel engine has great influences on the engine power,fuel consumption and the emissions. Based on the cylinder pressure measured on a small direct-injection turbocharged diesel engine, the combustion characteristics and the heat release rate are analyzed. In order to reduce the maximum combustion pressure and the NOx emission, it adopts smaller advance angle of fuel delivery. In most conditions, the combustion starts after TDC ; the maximum rate of pressure rise, the combustion pressure and the heat release rate are lower;their relevant phases are retarded.

关 键 词：柴油机 增压 燃烧 放热规律 

分 类 号：TK421.26[动力工程及工程热物理—动力机械及工程]