不同辛烷值参比燃料HCCI燃烧特性的试验研究  

An Experimental Study on Combustion and Emission Characteristics of HCCI Engine Fueled with Primary Reference Fuel Blends

作　　者：陈伟[1] 吕兴才[1] 黄震[1] 

机构地区：[1]上海交通大学机械与动力工程学院内燃机研究所,上海200030

出　　处：《汽车工程》2005年第4期404-408,共5页Automotive Engineering

基　　金：国家"973"重点基础研究项目(2001CB209208);国家自然科学基金重点项目(50136040)资助。

摘　　要：对不同辛烷值基本参比燃料及其混合物在高速4缸柴油机上进行单缸HCCI燃烧试验,研究了燃料辛烷值、发动机冷却水温度、进气温度以及冷EGR率对HCCI发动机燃烧特性和排放特性的影响。结果表明;在同一当量比下,随燃料辛烷值增大,着火时刻推迟,燃烧放热速率降低,HC和CO排放增大。HCCI燃烧随负荷的增大、EGR率的减小、进气温度和冷却水温度的升高,着火时刻提前,燃烧放热速率加快。A single-cylinder HCCI combustion experiment was carried out on a high-speed 4-cylinder diesel engine fueled with different primary reference fuel （PRF） blends. The effects of research octane number （RON） of fuel, the temperatures of engine coolant and intake air and the exhaust gas circulation （EGR） rate on the combustion and emission characteristics of HCCI engine were studied. The results showed that, for a fixed stoichiometric ratio, with the increase of fuel＇s RON, the ignition delayed, the heat release rate lowered, the combustion duration increased, and the emissions of HC and CO rose. While for each fuel having certain RON, with the increase of load, the decrease of EGR rate, the rises of engine coolant and intake air temperatures, the ignition advanced, the burning rate accelerated and the combustion duration reduced.

关 键 词：参比燃料 均质压燃 辛烷值 燃烧特性 排放特性 HCCI 燃料 试验研究 参比 冷却水温度 

分 类 号：TK421.2[动力工程及工程热物理—动力机械及工程] TQ534[化学工程—煤化学工程]