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Vehicle speed control system and method

  • US 8,843,288 B1
  • Filed: 06/24/2013
  • Issued: 09/23/2014
  • Est. Priority Date: 03/14/2013
  • Status: Active Grant
First Claim
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1. A system of controlling a vehicle speed of a vehicle with an engine, the system comprising:

  • a gear shift selector operable by a user of the vehicle to be set in one of a plurality of forward gear levels;

    a sensor configured to measure an incline grade of the vehicle;

    an electronic memory configured to store a plurality of vehicle target speeds that each correspond to both one of the plurality of forward gear levels of the gear shift selector and one of the plurality of incline grades of the vehicle; and

    ,a controller communicatively coupled to the electronic memory and the sensor, the controller configured to;

    receive a signal from the gear shift selector indicating a set forward gear level of the plurality of forward gear levels,receive a signal from the sensor indicating the incline grade of the vehicle,identify a requested vehicle target speed of the plurality of target speeds that corresponds to the set forward gear level of the gear shift selector and the incline grade of the vehicle, andgenerate at least one of an engine torque request and a brake torque request to control the vehicle speed to equal the requested vehicle target speed,wherein the controller identifies the requested vehicle target speed independent of any operating conditions of the engine.

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