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Method of feedback-controlling idling speed of internal combustion engine

  • US 4,633,093 A
  • Filed: 01/17/1985
  • Issued: 12/30/1986
  • Est. Priority Date: 01/18/1984
  • Status: Expired due to Term
First Claim
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1. An idling speed feedback control method for use with an internal combustion engine having electrical load equipment and a generator for supplying electric power to said electrical load equipment, said generator being driven by said engine, wherein an idling speed feedback control amount is effected as a function of the difference between an actual engine speed and a target idling speed, said method comprising the steps of detecting a generating state signal representing the generating state of said generator;

  • determining an electrical load correction value as a function of the detected generating state signal;

    determining the amount of charge of the electrical load correction value during a time period starting at or before the time when the electrical load correction value changes and ending at the time at or after the electrical load correction value changes;

    modifying said electrical load correction value in accordance with the magnitude of the amount of the change; and

    correcting the idling speed feedback control amount as a function of the modified electrical load correction value.

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