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System for controlling an engine and method therefor

  • US 4,625,690 A
  • Filed: 08/02/1985
  • Issued: 12/02/1986
  • Est. Priority Date: 08/03/1984
  • Status: Expired due to Term
First Claim
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1. A system for controlling an engine, comprising:

  • (a) first means for adjusting an intake air quantity supplied to the engine according to an opening angle thereof;

    (b) second means for actuating said first means to adjust the opening angle according to an angular displacement thereof;

    (c) third means for detecting a characteristic value corelative to an engine output;

    (d) fourth means for detecting the angular displacement of said second means;

    (e) fifth means for detecting an engine speed;

    (f) sixth means for calculating a target value of the engine output corelative value from the angular displacement of said second means and engine speed detected by said fourth and fifth means;

    (g) seventh means for comparing the calculated target value of the engine output corelative value by said sixth means with the detected value of engine output corelative value by said third means;

    (h) eighth means for calculating the opening angle value of said first means on the basis of a comparison result of said seventh means; and

    (i) ninth means for further actuating said first means to adjust the opening angle of said first means according to the calculated opening angle of said eighth means in addition to the adjustment of the opening angle of said first means by means of said second means so that the detected value of the engine output corelative value by said third means coincides with the calculated target value thereof by said sixth means.

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