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Running performance control apparatus and method for an electric vehicle

  • US 5,367,455 A
  • Filed: 07/31/1992
  • Issued: 11/22/1994
  • Est. Priority Date: 08/02/1991
  • Status: Expired due to Term
First Claim
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1. A running performance control apparatus for use in an electric vehicle, wherein said running performance control apparatus restricts the running performance of the vehicle when a capacity of a battery employed in the vehicle is reduced to a preset residual capacity, said running performance control apparatus comprising:

  • battery capacity detecting means for detecting that said battery capacity is reduced to said preset residual capacity;

    speed detecting means for detecting a speed of the vehicle while being driven;

    acceleration detecting means for detecting an acceleration of the vehicle;

    running state determining means for determining a vehicle running state based on detected values from said speed detecting means and said acceleration detecting means;

    shift position detecting means for detecting a shift position of a transmission of the vehicle;

    accelerator opening detecting means for detecting a degree of opening of an accelerator of the vehicle;

    operating state determining means for determining an operating state based on detected values from said shift position detecting means and said accelerator opening detecting means;

    storing means for storing therein a plurality of restriction data each used to restrict the running performance of the vehicle;

    restriction determining means for selectively determining whether the running state of the vehicle should be restricted when said battery capacity is reduced to said preset residual capacity; and

    running performance controlling means for reading information indicative of at least one restriction datum for restricting the running performance from said storing means based on information indicative of the running state determined by said running state determining means and on information indicative of the operating state determined by said operating state determining means when said restriction determining means determines that the running state of the vehicle should be restricted, and for restricting the running performance of the vehicle in response to said read information.

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