车用直喷柴油机加速工况下进气、供油及微粒排放的动态响应  

Dynamic Response of Air Intake,Fuel Supply and Particulate Emission of an Automotive DI Diesel Engine Under Accelerating Operation Conditions

作　　者：刘江唯[1] 刘忠长[1] 刘巽俊[1] 刘晓明[1] 

机构地区：[1]吉林大学内燃机系,长春130025

出　　处：《燃烧科学与技术》2003年第1期49-53,共5页Journal of Combustion Science and Technology

基　　金：国家自然科学基金资助项目 (599760 1 1 )

摘　　要：采用自行设计的瞬态工况控制及测量系统 ,研究车用柴油机恒转矩递增转速工况下进气、供油及微粒排放的动态响应 .结果表明 ,对于恒转矩递增转速瞬态工况过程 ,存在进气响应滞后和燃油流量超调的现象 .随着转速增加率的提高 。Dynamic response of air intake,fuel supply and particulate emission of an automotive direct-injection(DI)diesel engine was experimentally studied under several transient operating conditions of constant torque and uniformly increasing speed with a control and measurement system developed by ourselves. Test results prove the phenomenon of air intake delay and overfueling. With the increase of speed rise-rate,there also increases the mass concentration of particulate including its dry soot and soluble organic fraction increases.

关 键 词：车用直喷柴油机 加速工况 进气 供油 微粒排放 瞬态工况 动态响应 

分 类 号：U464.172[机械工程—车辆工程]