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Accelerator pedal calibration and fault detection

  • US 5,445,126 A
  • Filed: 06/24/1994
  • Issued: 08/29/1995
  • Est. Priority Date: 06/24/1994
  • Status: Expired due to Term
First Claim
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1. A calibration for use with a vehicle equipped with said throttle controlled engine and an electronic control unit having a processor for executing a predetermined set of instructions stored in a memory so as to control the engine, the vehicle also including in electronic accelerator pedal in communication with the processor for providing a signal indicative of a requested fueling level for the engine, the accelerator pedal having a range of travel between a fully released position and a fully depressed position, a method for automatically calibrating the electronic accelerator pedal comprising:

  • associating a first parameter stored in the memory with a value representing the signal provided by the electronic accelerator pedal when power is first applied to the system and the signal is within a first predetermined calibration range;

    altering engine fueling progression to provide a decreased engine fueling response to the range of travel of the electronic accelerator pedal so as to induce displacement of the electronic accelerator pedal to the fully depressed position; and

    associating a second parameter stored in the memory with a value representing the signal provided by the electronic accelerator pedal when the signal is within a second predetermined calibration range so as to automatically calibrate the electronic accelerator pedal.

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