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METHOD TO DETERMINE AN OPTIMIZED SHIFT POINT, IN PARTICULAR UPSHIFT POINT, FOR A MANUAL TRANSMISSION

  • US 20090076692A1
  • Filed: 09/15/2008
  • Published: 03/19/2009
  • Est. Priority Date: 09/18/2007
  • Status: Active Grant
First Claim
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1. A method for determining an optimized upshift point for a combustion engined vehicle with manual transmission, comprising the step of:

  • calculating a new engine operating point by a control circuit on the basis of a current engine operating point produced by a clutch torque and an engine speed and using preset gear ratios in the transmission, wherein the new engine operating point is produced when shifting up to the next higher gear at approximately the same vehicle speed, wherein the current engine operating point is determined by the control circuit as the optimized upshift point if the calculated new engine operating point is below a preset upper torque limit and is at the same time above a preset lower engine speed limit for the higher gear.

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