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Power controller for hybrid vehicle

  • US 8,280,570 B2
  • Filed: 07/31/2008
  • Issued: 10/02/2012
  • Est. Priority Date: 08/31/2007
  • Status: Active Grant
First Claim
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1. A power controller for a hybrid vehicle having an engine and an electric motor as power source, the power controller comprising;

  • a control means for controlling an operation point of the engine, which is determined based on an engine speed and an engine torque;

    a demand power computing means for computing a demand power of the engine; and

    a demand operation point computing means for computing a demand operation point of the engine based on the demand power of the engine and an efficiency characteristic of the engine;

    whereinwhen the control means moves the operation point of the engine according to the demand operation point, a moving speed of the operation point in a case where the operation point moves to improve a fuel economy is faster than that in a case where the operation point moves to deteriorate the fuel economy.

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