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CONTROL SYSTEM FOR HYBRID VEHICLES

  • US 20070119640A1
  • Filed: 01/26/2007
  • Published: 05/31/2007
  • Est. Priority Date: 01/22/2004
  • Status: Active Grant
First Claim
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1. A control system for a hybrid vehicle, in which an internal combustion engine is connected to a first electric motor and to an output member through a power distributing mechanism, in which a second electric motor is connected to the output member through a transmission wherein a torque capacity is varied in accordance with an oil pressure, and which has an electric oil pump for generating an oil pressure to set the torque capacity of the transmission, comprising:

  • an oil pressure judging means for judging whether or not the oil pressure established by operating the electric oil pump is raised higher than a preset value;

    an electric oil pump output lowering means for lowering an output of the electric oil pump in case the oil pressure judging means judges that the oil pressure is raised higher than the preset value;

    a cranking means for carrying out a cranking of the internal combustion engine by the first electric motor; and

    a mechanical oil pump, which is arranged in parallel with the electric oil pump, for generating an oil pressure by being driven by the internal combustion engine.

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