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High acceleration time shift control apparatus and control method for vehicle

  • US 20040153232A1
  • Filed: 12/31/2003
  • Published: 08/05/2004
  • Est. Priority Date: 01/17/2003
  • Status: Active Grant
First Claim
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1. A high acceleration time shift control apparatus for a vehicle, comprising:

  • a transmission which achieves plural shift speeds whose gear ratios are different from each other; and

    a high acceleration time upshifting control device which changes a shift speed of the transmission to a higher speed based on a predetermined determination rotational speed such that an input rotational speed of the transmission substantially reaches a target maximum rotational speed when a request for high acceleration is made by a driver, wherein the high acceleration time upshifting control device outputs an upshift command for performing an upshift when the determination rotational speed reaches a predetermined shift determination speed;

    calculates an actual ineffective time until shifting is actually started and the input rotational speed starts decreasing after the upshift command is output;

    computes a virtual maximum rotational speed, that is a maximum rotational speed when the input rotational speed changes at a reference rotational speed change rate, based on the input rotational speed when the upshift command is output, the ineffective time and the predetermined reference rotational speed change rate; and

    changes the shift determination speed such that the virtual maximum rotational speed comes close to the target maximum rotational speed and then performs learning.

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