基于脉宽调制式CNG高速电磁阀驱动性能分析  

CNG high-speed electromagnetic valve drive test analysis based on pulse width modulation

作　　者：汪科任[1] 孙仁云[1] 吴聿东[1] 严浩铭[1] 

机构地区：[1]西华大学交通与汽车工程学院,四川成都610039

出　　处：《中国测试》2014年第5期149-152,共4页China Measurement & Test

摘　　要：针对CNG高速电磁阀驱动性能问题,提出基于脉宽调制的方法并进行试验分析。结果表明:该驱动电路能够实现高压打通低压保持喷射的功能,符合喷射规律;可得出驱动电压、PWM的周期、PWM的占空比都将对电磁阀的驱动能力以及维持喷射能力产生不同的影响,3者的有机调节可实现理想的电流波形。For the problems of CNG high-speed solenoid valve drive performance,the method was proposed based on pulse width modulation experiment analysis. Results show that the drive circuit can realize high pressure to low pressure to maintain the function of the injection, which conforms to the law of injection. It can be concluded that the driving voltage,the PWM cycle of the PWM duty cycle will drive ability of solenoid valve and maintain injection has the different impact on the ability, three organic regulation can realize the ideal conclusion of the current waveform.

关 键 词：CNG高速电磁阀 PWM 试验和分析 

分 类 号：TH134[机械工程—机械制造及自动化]