SOLENOID VALVE FAILURE DETECTION FOR ELECTRONIC DIESEL FUEL INJECTION CONTROL SYSTEMS

Abstract

Abstract: Possible faults existing in electronic diesel fuel injection control (EDC) systems include rack deformation, solenoid valve failure, and rack-travel sensor malfunction. Among these problems, the solenoid failure is the most likely to occur for in-use diesel engines. This paper focuses on developing the algorithm that can clearly classify the usability of a solenoid valve without disassembling the fuel pump of the EDC system. Key parameters to feature the failure of the solenoid valve are determined. And a detection algorithm is discussed. Experimental results show that the proposed algorithm can identify the solenoid valve failure precisely. Copyright © 2005 IFA

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