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Method and apparatus for limiting engine torque to protect disconnect clutch in a hybrid vehicle

  • US 8,911,324 B2
  • Filed: 11/29/2012
  • Issued: 12/16/2014
  • Est. Priority Date: 11/29/2012
  • Status: Active Grant
First Claim
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1. A powertrain comprising:

  • an engine;

    a motor;

    a disconnect clutch between the engine and the motor;

    a transmission connected to the motor and selectively connected to the engine;

    a launch clutch between the motor and the transmission; and

    a controller receiving an engine torque output signal, limiting engine torque output to a disconnect clutch capacity limit, and reducing motor torque when the launch clutch is open or slipping to a negative disconnect clutch capacity limit.

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