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Methods and system for controlling driveline torque

  • US 10,160,440 B2
  • Filed: 06/16/2016
  • Issued: 12/25/2018
  • Est. Priority Date: 06/16/2016
  • Status: Active Grant
First Claim
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1. A powertrain operating method, comprising:

  • providing a negative input torque to a transmission via a motor in response to the motor being available to supply the negative input torque and driver demand torque less than a threshold;

    providing the negative input torque to the transmission via an engine operating in a deceleration fuel cut off mode in response to the motor being unavailable to supply the negative input torque and the driver demand torque less than the threshold; and

    opening a torque converter clutch in response to a request to enter a gear having a ratio greater than a threshold and the motor being unavailable to supply the negative input torque.

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