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System for selecting a transmission economy-based shift schedule

  • US 8,775,041 B2
  • Filed: 09/23/2011
  • Issued: 07/08/2014
  • Est. Priority Date: 10/04/2010
  • Status: Active Grant
First Claim
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1. A method of selecting an economy mode shift schedule for shifting a transmission between a plurality of selectable gear ranges, the transmission being coupled to a powered vehicle and having a transmission control circuit, and the vehicle having an input control circuit for controlling a powered input, comprising:

  • calculating vehicle acceleration;

    determining a change in accelerator pedal position;

    determining a net tractive effort force of the vehicle for a current gear range of the transmission;

    comparing the net tractive effort force for the current gear range to a maximum tractive effort force for a desired gear range;

    selecting the economy mode shift schedule for the transmission based on the comparison; and

    controlling shifting between one or more gear ranges of the transmission according to the economy mode shift schedule.

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