2缸高压共轨柴油机增压器性能匹配与研究  

Study on Turbocharger Performance Matching for Two-Cylinder High Pressure Common Rail Diesel Engine

作　　者：张学文[1] 申立中[1] 毕玉华[1] 雷基林[1] 王贵勇[1] 

机构地区：[1]昆明理工大学云南省内燃机重点实验室,昆明650224

出　　处：《内燃机工程》2012年第1期11-17,共7页Chinese Internal Combustion Engine Engineering

基　　金：云南省科技强省计划项目(2007AD005)

摘　　要：针对一款2缸高压共轨4气门增压柴油机,基于2缸柴油机进、排气压力波动的特殊性,研究了不同发火顺序的发动机排气对增压器匹配的影响,选择了360°CA的发火顺序,分析了2缸柴油机增压器效率的波动及泵气损失的特点。兼顾乘用车对柴油机高低速性能的要求,设计了2种方案的增压器进行分析和匹配试验,提出了增压器的改进优化技术措施并进行了优化试验。试验结果表明:柴油机中低速性能得到了改善,低速扭矩增加了8N.m,燃油消耗率降低了12g/(kW.h),柴油机的各项性能指标满足设计目标,排放达到欧Ⅳ标准。For a 2-cylinder, 4 valve per cylinder, turbocharged high pressure common rail diesel engine, the influence of different firing orders on turbocharger matching was studied, and the 360 ~CA firing order was selected. Considered turbocharger efficiency and engine pumping loss and the passenger car special requirement to meet both high and low speed performance, two turbocharger schemes were designed. On the basis of matching test results, optimization measures for the turbocharger were proposed. Final results show that the engine performance at low and middle speeds is improved, low speed torque increases by 8 N^m, and specific fuel consumption reduces by 12 g/（kW^h）. Engine performance reaches the design targets and exhaust emissions meet Euro ~ emission standards.

关 键 词：内燃机 柴油机 增压器 匹配 性能 排放 

分 类 号：TK421.8[动力工程及工程热物理—动力机械及工程]