Characterisation of Solenoid Valve Failure for Electronic Diesel Fuel Injection System of Commercial Trucks

The fuel injection control system significantly affects fuel efficiency and emissions from diesel engines of commercial trucks. For electronic diesel fuel injection control (EDC) systems, possible faults include rack deformation, solenoid valve failure, and rack-travel sensor malfunction. Among these problems, solenoid valve failure is most likely to occur in in-use diesel engines. Since the solenoid valve is mounted inside the diesel fuel pump, it is hard to access for diagnosis. Therefore, this paper aims to study the characteristics of the failure, and then study the possibility of developing a method for its diagnosis. A method was developed using feed-forward and feedback control algorithms. It was found that solenoid failure is caused by wear between plunger and sleeve and the symptom is variation of Coulomb frictional force. Experiments were conducted to define the symptoms. The proposed method is validated through these experiments.

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  • English

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  • Accession Number: 01046686
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 18 2007 2:30PM