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CONTROL DEVICE FOR AUTOMATIC TRANSMISSION

  • US 20130184949A1
  • Filed: 01/11/2013
  • Published: 07/18/2013
  • Est. Priority Date: 01/12/2012
  • Status: Active Grant
First Claim
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1. A control device for an automatic transmission comprising:

  • a current shift position detection unit adapted to detect a current shift position indicative of a current gear of the automatic transmission;

    a possible shift position determination unit adapted to determine a gear after a possible shift-up according to a traveling state of a vehicle;

    an engine operation state acquisition unit adapted to acquire a current engine operation state of a variable cylinder engine capable of switching between a full-cylinder operation in which all cylinders of the variable cylinder engine are operated and a cylinder deactivation operation in which one or more cylinders of the variable cylinder engine are deactivated;

    a calculation unit adapted to calculate, for each engine operation state to which the variable cylinder engine can be switched, a fuel consumption amount to be consumed to generate a driving force required to maintain a current traveling state of the vehicle for each of the current gear and the gear after the possible shift-up determined by the possible shift position determination unit; and

    a gear shift determination unit adapted to allow an automatic shift control to perform a shift-up to the gear after the possible shift-up, based on the calculated fuel consumption amount, when a calculated fuel consumption amount of the gear after the possible shift-up is smaller than a calculated fuel consumption amount of the current gear.

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