车用柴油机燃烧系统的改进  

Improvement on Combustion System of Vehicular Diesel Engine

作　　者：乔信起[1] 黄震[1] 肖进[1] 王岩[2] 凌君旸 汪胜波 

机构地区：[1]上海交通大学机械与动力工程学院 [2]中国重型汽车集团有限公司 [3]上海柴油机股份有限公司技术中心

出　　处：《农业机械学报》2004年第2期17-20,共4页Transactions of the Chinese Society for Agricultural Machinery

基　　金：上海市科学技术发展基金资助项目 (项目编号 :993 0 12 0 0 4)

摘　　要：在保持进气系统、喷油嘴和启喷压力不变的情况下 ,通过改变燃烧室和强化喷油泵改善车用柴油机的燃烧。利用 KIVA 软件计算分析了新、原燃烧室对应的缸内流场 ,通过台架试验研究了新、原燃烧系统的经济性和排放性。结果表明 ,采用新燃烧系统后 ,柴油机在保持动力性不变的情况下 。In order to improve combustion, a new reentrant combustion chamber with a small ratio of caliber to maximum diameter was adopted in a vehicular D.I. diesel engine, and a pump with increased fuel supply rate was mounted on it. The intake system, nozzle and injection starting pressure kept the same as those of the base engine, however. The in-cylinder flow fields were calculated both in the case of new and base combustion chamber by using KIVAⅡ codes, and the fuel economy and emissions performance were investigated on test bench. The results demonstrated that the test engine with the new combustion system achieved high efficiency and clean combustion.

关 键 词：车用柴油机 燃烧系统 改进 燃烧室 喷油泵 缸内流场 台架试验 经济性 排放性 

分 类 号：U464.172[机械工程—车辆工程] U464.136[交通运输工程—载运工具运用工程]