高压共轨压电式喷油器核心驱动电路的研究  

Key Driving Circuit of Piezoelectric Injector for High-pressure Common Rail System

作　　者：张爱云[1] 曾伟[1] 高崴[1] 周维[1] 俞谢斌[1] 

机构地区：[1]无锡油泵油嘴研究所,江苏无锡214063

出　　处：《车用发动机》2013年第2期6-9,17,共5页Vehicle Engine

摘　　要：压电晶体执行器的电容特性决定了它与电磁阀有着不同的驱动方式,在分析优化前驱动电路所存在缺陷的基础上,对该电路进行了优化设计,将优化后的压电晶体充电、放电核心驱动电路进行了Pspice仿真,并对充放电限流电感值进行了Pspice参数扫描分析。仿真结果与实际驱动电路输出基本吻合,且给出了限流电感的合理参数值,达到了优化的目标。The capacitance characteristic of piezoelectric injector made its driving mode different from the electromagnetic valve. Based on the disadvantage of driving circuit, the hardware circuit was optimized, the Pspice simulation of optimized pie- zoelectric crystal charging and discharging driving circuit was done, and the Pspice parameter sweep analysis of limit current in- ductance value was carried out. The simulation result basically coincided with the real output of the driving circuit and the rea- sonable value of limit current inductance were determined, which reached the optimization purpose.

关 键 词：压电式喷油器 脉宽调制 驱动电路 仿真 

分 类 号：TK414.32[动力工程及工程热物理—动力机械及工程]