某柴油机用单体泵主要参数优化设计  

Optimization Design of Main Parameters of the Electronic Unit Pump Used for a Diesel Engine

作　　者：王先勇[1] 居钰生[1] 卜安珍[1] 缪雪龙[1] 王胜利[1] 徐向阳 

机构地区：[1]中国一汽无锡油泵油嘴研究所,江苏无锡214063 [2]一汽客车(无锡)有限公司,江苏无锡214177

出　　处：《现代车用动力》2012年第1期7-11,共5页Modern Vehicle Power

基　　金：国家863计划--高压喷油泵关键技术与产品开发(2009AA045101);江苏省自然科学基金项目(BK2009507)

摘　　要：针对某配用单体泵柴油机在运行中出现的油耗增加、排放变差、凸轮早期磨损等情况,建立了单体泵运动件的三维模型,通过运动学和动力学分析并结合喷油泵台架试验,指出了问题最主要根源——原单体泵凸轮型线工作段包角过小。根据这种情况和国Ⅳ排放要求对单体泵凸轮型线和柱塞弹簧等进行了重新设计。In order to analyze the causes of fuel consumption increasing,emissions becoming worse and early wear of the electronic unit pump(EUP) cam used for a diesel engine,the 3-D model about moving parts of the EUP is built.Through analysis of the kinematics and dynamics of the moving parts and tests on a fuel injection pump test-bench,the main cause is pointed out.That is the working cam angle is so small that it can not meet the requirements for high injection pressure,high load and China stage-Ⅳ emission regulation.Therefore,the cam profile and plunger spring are re-designed.

关 键 词：单体泵 供油系统 排放 凸轮型线 凸轮升程 凸轮设计 

分 类 号：TK423.8[动力工程及工程热物理—动力机械及工程]