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Retarding apparatus for automotive vehicles

  • US 5,124,923 A
  • Filed: 10/31/1990
  • Issued: 06/23/1992
  • Est. Priority Date: 11/08/1989
  • Status: Expired due to Term
First Claim
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1. A retarding control apparatus for an automotive vehicle, comprising:

  • first retarding signal output means for calculating a speed of a decrease in engine output based upon a detection signal from engine output detecting means, and outputting a retarding signal, which corresponds to the speed of decrease in engine output, to a retarder mounted in a drive system of the vehicle;

    first cutting means for cutting a connection between said first retarding signal output means and said retarder when a rate of decrease in distance to an object ahead of the vehicle in the traveling direction thereof, which is calculated based upon a detection signal from distance detecting means for detecting said distance, is less than a predetermined value and the distance to the object is greater than a predetermined value; and

    second cutting means for cutting a connection between said first retarding signal output means and said retarder when acceleration, which is calculated based upon a vehicle velocity signal, and the distance to the object detected by said distance detecting means are, not less than respective predetermined values.

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