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Method and system for detecting the level of engine oil of an engine

  • US 4,876,529 A
  • Filed: 09/13/1988
  • Issued: 10/24/1989
  • Est. Priority Date: 10/21/1985
  • Status: Expired due to Term
First Claim
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1. A method for detecting a level of an engine oil of an engine having an oil pan, comprising:

  • a first step including timer means for detecting that said engine has operated for more than a first predetermined time period required for a sufficient temperature rise of the engine oil to reduce viscosity of the engine oil, and producing a first detection output signal;

    a second step for detecting that said engine has stopped for more than a second predetermined time period required for the engine oil to return to the oil pan from the engine after the stop of the engine, after said first detection signal is generated, and producing a second detection signal; and

    a third step for detecting an oil level after generation of said second detection signal.

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