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Cruise control based retarder control

  • US 5,634,446 A
  • Filed: 09/01/1995
  • Issued: 06/03/1997
  • Est. Priority Date: 09/01/1995
  • Status: Expired due to Term
First Claim
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1. A method for controlling application of a vehicle'"'"'s auxiliary brakes without exiting cruise control, comprising the steps of:

  • (a) providing a plurality of auxiliary brakes operable to resist a forward motion of the vehicle when activated;

    (b) receiving a first commanded brake state from a driver of the vehicle, wherein the first commanded brake state selects which of the plurality of auxiliary brakes the driver wishes to be activated;

    (c) determining a second commanded brake state by comparing a current vehicle acceleration with at least one predetermined acceleration limit;

    (d) selecting one of the first or second commanded brake states which commands activation of a lesser number of the plurality of auxiliary brakes than another one of the first or second commanded brake states; and

    (e) activating the auxiliary brakes selected in step (d).

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