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Hybrid vehicle drive control system

  • US 20070102207A1
  • Filed: 11/06/2006
  • Published: 05/10/2007
  • Est. Priority Date: 11/07/2005
  • Status: Active Grant
First Claim
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1. A hybrid vehicle drive control system comprising:

  • an engine;

    a motor/generator;

    a first clutch configured and arranged to change a first torque transfer capacity between the engine and the motor/generator;

    a second clutch configured and arranged to change a second torque transfer capacity between the motor/generator and at least one drive wheel; and

    a controller configured to selectively control the first and second clutches to switch between an electric drive mode in which the first clutch is released and the second clutch is engaged, and a hybrid drive mode in which both the first and second clutches are engaged, the controller being further configured to set the second torque transfer capacity to a value that is more than zero and less than a target motor/generator torque of the motor/generator when starting the engine during a drive mode change from the electric drive mode to the hybrid drive mode.

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