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Downshift acceleration control

  • US 20050137770A1
  • Filed: 12/19/2003
  • Published: 06/23/2005
  • Est. Priority Date: 12/19/2003
  • Status: Active Grant
First Claim
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1. A turbine acceleration control system for a transmission in a vehicle comprising:

  • a shift module that determines a downshift type;

    an altitude model that determines an altitude of the vehicle;

    a turbine speed sensor that determines a speed of a turbine in the transmission; and

    a controller that communicates with the shift module, the altitude model, and the turbine speed sensor and determines a desired turbine acceleration based on the downshift type, the altitude, and the speed.

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