电控组合泵喷油驱动电路设计及试验分析  

Design and Experimental Analysis of Driving Circuit for Fuel Injection Valve of Electronically Controlled Assembly Pump

作　　者：尤丽华 孙晓琴 唐雄辉 安伟 李刚 王诣 

机构地区：[1]江南大学机械工程学院,无锡214122 [2]无锡威孚高科技股份有限公司技术中心,无锡214000

出　　处：《内燃机工程》2009年第6期52-57,共6页Chinese Internal Combustion Engine Engineering

基　　金：国家科技支撑项目(2007BAF26B02);江苏省汽车工程重点实验室开放基金资助项目(QC200702)

摘　　要：为了提高电控组合泵喷油电磁阀的高速驱动性能,采用分析和试验相结合的方法设计了一种具有双电压自动切换的双阶段脉冲宽度调制(PWM)波限流控制功能的驱动模块,并在油泵试验台架上进行了多项参数试验和分析。试验结果表明:对于作用电流为18 A的电磁阀,在高压值为100 V、高压作用时间为290μs时,其驱动电流上升率高且不造成能量损耗;PWM波频率取值约100 kHz时既能减小电流波动又能克服干扰;与单纯采用普通二极管的续流回路相比,采用瞬变抑制二极管的续流电路能使电流的下降延迟时间缩短10倍以上。In order to enhance the performance of driving circuit for fuel injection solenoid valves of electronically controlled assembly pump, a new driving module with dual voltage automatically switched two phase pulse width modulation（PWM） current limiting control function was designed on the basis of analysis and experiments. The actual measurements in the pump bench test show that for the solenoid valve of working current of 18 A, quick driving current response and low power consumption can be achieved at high voltage 100V and its acting time 290us. It is proved that both driving current waving and pulse jamming are lowest when PWM frequency of 100 kHz is taken. And the driving current drop delay time is shortened over 10 times, when using the TVS diode in return of after-flow circuit than using common one.

关 键 词：内燃机 电控组合泵 电磁阀 驱动电路 脉冲宽度调制 

分 类 号：TK423.8[动力工程及工程热物理—动力机械及工程]