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Method and apparatus for monitoring and determining the functional status of an electromagnetic valve

  • US 20070291438A1
  • Filed: 06/16/2006
  • Published: 12/20/2007
  • Est. Priority Date: 06/16/2006
  • Status: Active Grant
First Claim
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1. A method of determining the functional status of an electromagnetic valve having a solenoid and plunger comprising the steps of:

  • determining the electromechanical switching time, tems, of a valve based on characteristics of an electrical characteristic responsive to the solenoid;

    comparing the valve electromechanical switching time to a predetermined value; and

    generating a valve status signal dependant on the results of the comparison.

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