新型高压共轨ECU升压模块的数字化开发与优化  

Digital Development and Optimization of a New Type Booster Module in HPCR ECU

作　　者：李克[1] 苏万华[1] 郭树满[1] 

机构地区：[1]天津大学内燃机燃烧学国家重点实验室,天津300072

出　　处：《内燃机学报》2010年第2期97-102,共6页Transactions of Csice

基　　金：国家重点基础研究发展规划资助项目(2001CB209202;2007CB210001)

摘　　要：为了提高喷油器电磁阀的响应速率,提出了一种基于CPLD(复杂可编程逻辑器件)应用于高压共轨ECU的数字升压模块。鉴于该升压电路结构参数多,其升压电压的恢复响应要求高等特征,基于Pspice建立了升压电路的仿真模型,研究了不同电路参数下升压模块的输出特性,全面优化了该升压模块的性能。结果显示,该升压模块的最大转换效率可以达90%以上。在柴油发动机上对ECU的试验表明,升压电压最大波动不超过10%,其恢复时间仅为1.3ms,功率管最大温升仅为41℃,满足整机运行范围内ECU的需求。To improve the electro-magnet response rate of common-rail injector solenoid,a new type digital booster in common-rail ECU is developed based on CPLD（complex programmable logic device）.Taking into account of many configuration parameters in booster circuit and recovery response to booster voltage of ECU,a booster simulation model is built based on Pspice.The effect of different circuit parameters on output characteristic of the booster is studied,and digital booster is optimized.Result shows that maximum conversion efficiency of booster module reaches 90%.Testing of ECU on diesel engine shows that maximum fluctuating in booster voltage is less than 10% with renewing-time is 1.3 ms and maximum temperature increasing of power-switch is 41 ℃.All these meet the requirement of ECU over whole engine operation range.

关 键 词：高压共轨 ECU 升压模块 PSPICE CPLD 优化 数字化 

分 类 号：TK427[动力工程及工程热物理—动力机械及工程]