摘要
基于高压共轨柴油机压电喷油器的工作原理,设计了驱动电路,讨论了该驱动电路对执行器的保护及能量回收特性。建立了电路的数学模型,通过对模型的分析及仿真,探讨了采用脉宽调制(PWM)驱动方式时执行器响应特性与脉宽调制频率的关系,以及驱动回路阻抗对执行器响应特性的影响。以仿真结果为依据进行了试验,验证了模型以及仿真分析的正确性。对比试验的结果表明:相对电磁阀式喷油器而言,压电喷油器的驱动响应快、工作稳定,能够更好地满足高压共轨燃油喷射系统的要求。
Based on the working principle of piezoelectric injector for high pressure common rail diesel engine, the driving circuit was designed. The characteristics of actuator protection and energy recovery were discussed. A model for the driving circuit was developed. According to model analysis and simulation, the relation among actuator responsibility, the frequency of pulse width modulation （PWM） and the effects of circuit resistance were investigated. The experiment based on the simulation verifies the effectiveness of the model and simulation. The comparative experiments show that the piezoelectric injector has better driving responsibility, stability of injection and meets the requirements of high pressure common rail injection system.
出处
《江南大学学报（自然科学版）》
CAS
2009年第2期202-206,共5页
Joural of Jiangnan University (Natural Science Edition)
关键词
共轨
压电晶体喷油器
驱动
响应
common rail, piezoelectric injector, driver, responsibility
