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Clutch torque trajectory correction to provide torque hole filling during a ratio upshift

  • US 10,166,989 B2
  • Filed: 01/04/2016
  • Issued: 01/01/2019
  • Est. Priority Date: 06/08/2011
  • Status: Active Grant
First Claim
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1. A powertrain comprising:

  • a multiple-ratio transmission with oncoming and off-going clutches for effecting a ratio-upshift;

    a torque sensor for measuring a clutch torque one of the off-going and oncoming clutches during a torque phase; and

    a shift controller programmed to;

    release the off-going clutch if the measured clutch torque indicative of an off-going clutch torque is less than a threshold to effectuate the ratio-upshift.

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