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CONTROL SYSTEM FOR VEHICLE

  • US 20110166755A1
  • Filed: 09/10/2009
  • Published: 07/07/2011
  • Est. Priority Date: 09/17/2008
  • Status: Active Grant
First Claim
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1. A control system for a vehicle which is provided with a continuously variable transmission and is driven by an internal combustion engine with said continuously variable transmission, said control system comprising:

  • driving force parameter setting means for setting a demand driving force parameter indicative of a demand driving force of said engine based on an operation amount of an accelerator pedal of said vehicle;

    driving force control means for controlling a driving force of said engine;

    target value setting means for setting a target value of a control amount of said driving force control means based on the demand driving force parameter;

    actuating means for actuating said driving force control means so that the control amount coincides with the target value;

    target rotational speed setting means for setting a target rotational speed of said engine based on the demand driving force parameter;

    transmission control means for controlling said continuously variable transmission so that the rotational speed of said engine coincides with the target rotational speed; and

    an operation mode switch for switching between at least a first operation mode and a second operation mode, the fuel consumption rate in the second operation mode being less than the fuel consumption rate in the first operation mode,wherein said driving force parameter setting means includes first characteristic switching means for setting the demand driving force parameter corresponding to the operation amount of the accelerator pedal to a value which is smaller than a value of the demand driving force parameter in the first operation mode, when the second operation mode is specified by said operation mode switch, andsaid target value setting means includes second characteristic switching means for calculating the target value based on a first predetermined characteristic preliminarily set according to the engine rotational speed and the demand driving force parameter, when the second operation mode is specified by the operation mode switch,wherein the first predetermined characteristic is set so that the target value corresponding to the same engine rotational speed is substantially constant in a first predetermined range of the demand driving force parameter.

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