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METHOD FOR ENGINE LASER IGNITION SYSTEM

  • US 20190162159A1
  • Filed: 11/27/2017
  • Published: 05/30/2019
  • Est. Priority Date: 11/27/2017
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • spinning an engine in reverse, unfueled, to establish a baseline intake air temperature and then sealing a cylinder at a position of negative valve overlap;

    operating a laser ignition device in the sealed cylinder;

    spinning the engine in reverse, unfueled, to unseal the cylinder; and

    diagnosing the laser ignition device based on a change in measured intake air temperature relative to the baseline intake temperature.

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