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Temperature compensation system for minimizing sensor offset variations

  • US 6,658,345 B2
  • Filed: 05/18/2001
  • Issued: 12/02/2003
  • Est. Priority Date: 05/18/2001
  • Status: Active Grant
First Claim
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1. A temperature compensation system for minimizing sensor offset variations, comprising:

  • a sensor producing a sensor signal indicative of an operating condition of an internal combustion engine;

    means for determining a temperature of said sensor and producing a temperature signal corresponding thereto;

    a key switch for starting and stopping said engine, said key switch having at least an on position and an off position; and

    an engine controller responsive to a transition of said key switch to said on position to determine a first temperature signal value and an associated first sensor signal value, said controller responsive to a transition of said key switch to said off position to determine a second temperature signal value and an associated second sensor signal value, said controller defining an offset value associated with said sensor as a function of said first and second temperature signal values and of said first and second sensor signal values.

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