压电堆执行器温度特性研究  

Temperature Characteristic of Piezoelectric Actuator

作　　者：李铁栓[1] 张幽彤[1] 熊庆辉[1] 

机构地区：[1]北京理工大学机械与车辆学院,北京100081

出　　处：《车用发动机》2011年第3期46-50,共5页Vehicle Engine

基　　金：国防重点预先研究项目(40402030205)

摘　　要：在压电堆执行器生热和散热机理分析基础上,建立高压共轨喷油器压电堆执行器温度特性的计算模型,经与试验结果对比,验证了模型的准确性。研究了驱动场强、驱动频率和驱动脉宽增加的苛刻工作条件下不同影响因素对压电堆执行器的生热特性的影响,并研究了压电堆执行器结构和喷油器冷却结构对散热特性的影响。Based on the heat generation and heat release principle of piezoelectric actuator,the model of piezoelectric actuator temperature characteristic for the high pressure common rail fuel injector was built.The simulation model was verified by the experiment.With the model,the influences of different factors on actuator heat generation were researched under the severe working conditions of increasing driving strength,driving frequency and driving pulse width,Moreover,the influences of actuator structure and injector cooling structure on heat release were also researched.

关 键 词：高压共轨 喷油器 压电堆执行器 散热 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]