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Method for detecting abnormality in hybrid vehicle

  • US 20030106728A1
  • Filed: 12/10/2002
  • Published: 06/12/2003
  • Est. Priority Date: 12/12/2001
  • Status: Active Grant
First Claim
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1. A method for detecting an abnormality in a hybrid vehicle that comprises an engine that can run in a cylinder cut-off state where intake and exhaust valve lifts are made zero, and a motor/generator that functions as both a motor and a generator, the vehicle traveling by means of the power of at least one of the engine and the motor/generator and carrying out regenerative braking by the motor/generator while running the engine in a cylinder cut-off state during deceleration;

  • wherein, when detecting an abnormality based on a negative intake pressure of the engine, the engine is prohibited from running in a cylinder cut-off state even during deceleration.

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