Electronic throttle servo overheat protection system

  • US 6,763,804 B2
  • Filed: 10/09/2001
  • Issued: 07/20/2004
  • Est. Priority Date: 10/09/2001
  • Status: Active Grant
First Claim
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1. A method for controlling a positioning device of an internal combustion engine, the method comprising the steps of:

  • providing an electric motor for actuating the positioning device;

    commanding the positioning device to change to a commanded position;

    detecting a control effort required to change to said commanded position;

    determining whether said control effort exceeds a threshold for a predetermined time period; and

    reducing said control effort when said control effort exceeds said threshold for said predetermined time period;

    wherein commanding the positioning device to change to said commanded position comprises at least one of commanding the positioning device to open to a hold open mode and commanding the positioning device to dose to a hold close mode.

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