Solenoid Valve Failure Diagnosis for Electronic Diesel Fuel Injection Control Systems

Authors:	Tseng Chyuan-Yow, National Pingtung University of Science and Technology, Taiwan Lin Chiu-Feng, National Pingtung University of Science and Technology, Taiwan
Topic:	7.1 Automotive Control
Session:	Automotive Control
Keywords:	Solenoid Valve, EDC, Diesel Engine, Fault Diagnosis

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 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 pump of the EDC system. Key parameters to feature the failure of the solenoid valve are first determined. Then a detection algorithm is discussed. Experimental results show that the proposed algorithm can identify the solenoid valve failure precisely.