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J4  2012, Vol. 46 Issue (9): 1654-1659    DOI: 10.3785/j.issn.1008-973X.2012.09.016
能源工程     
柴油机高速电磁阀驱动模块设计与故障诊断
密刚刚,周文华,沈成宇,郭修其
浙江大学 能源工程学系,浙江 杭州 310027
Design of driving module and fault diagnosis for
high-speed solenoid valve of diesel
MI Gang-gang, ZHOU Wen-hua, SHEN Cheng-yu, GUO Xiu-qi
Department of Energy Engineering, Zhejiang University, Hangzhou 310027, China
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摘要:

针对时间压力式电控燃油系统的高速电磁阀——高压油泵及喷油器电磁阀的驱动电流特性,设计相应的驱动电路,得到符合要求的驱动电流.根据驱动电路特点,设计相应的故障诊断电路,并用仿真软件验证电路的准确性.在完成相应的诊断软件设计得到完整的诊断模块后,将设计的模块运用于实际工程中,在柴油机上完成了实际模块的驱动和故障诊断试验.试验结果表明:该驱动模块达到了共轨系统驱动要求,同时实现了油泵电磁阀以及喷油器电磁阀的短路、断路及喷油器的对地短路等故障检测,其准确性和可靠性达到了系统应用要求.

Abstract:

According to the characteristic of driving current of the high-pressure pump and injectors' high-speed solenoid valve in the electrically controlled fuel injection system of diesel with time-pressure way, the driving circuit was designed, and the respective driving current was derived. Based on the driving circuit's characteristic, the corresponding circuit for fault detecting and diagnosing was proposed, and its veracity was proved through simulating circuit by software on the PC. The integrated fault diagnosis module was completed after the diagnosis algorithm was proposed. And the designed module was applied to an actual project. Then the experiment of actual driving and real-time fault diagnosing was operated on an electrically controlled diesel. The results showed that the pump and injector operated effectually and the parameter of the actual driving current was accurate with the system requirement. When faults occurred on the condition that the diesel worked on the middle or high speed, electronic control unit (ECU) could detect the faults and take effective actions to stop driving actuators timely. So the driving module satisfies the common rail's operating requirement. The detecting and diagnosing of open and short circuit of pump's solenoid valve and short to ground, open and inner short circuit of injector's solenoid valve is implemented. And its veracity and reliability satisfies the demand of system application.

出版日期: 2012-09-01
:  TK 421.23  
通讯作者: 周文华,男,副教授.     E-mail: zhouwh999@126.com
作者简介: 密刚刚(1986-),男,硕士生,主要研究方向为发动机电子控制技术.E-mail: kenmigang@yahoo.com.cn
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引用本文:

密刚刚,周文华,沈成宇,郭修其. 柴油机高速电磁阀驱动模块设计与故障诊断[J]. J4, 2012, 46(9): 1654-1659.

MI Gang-gang, ZHOU Wen-hua, SHEN Cheng-yu, GUO Xiu-qi. Design of driving module and fault diagnosis for
high-speed solenoid valve of diesel. J4, 2012, 46(9): 1654-1659.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2012.09.016        http://www.zjujournals.com/eng/CN/Y2012/V46/I9/1654

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