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Hybrid electric vehicle with limited operation strategy

  • US 6,405,818 B1
  • Filed: 04/11/2000
  • Issued: 06/18/2002
  • Est. Priority Date: 04/11/2000
  • Status: Expired due to Term
First Claim
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1. A method for limited operation of a hybrid electric vehicle of the type having an engine, a generator and a motor which are cooperatively coupled to and selectively provide torque to a drive line, said method comprising the steps of:

  • providing a controller which is effective to monitor said engine, said generator and said motor, and to selectively and controllably operate said vehicle by use of said engine, said generator and said motor;

    determining whether a fault exists within said engine; and

    causing said controller to operate in an LOS-electric drive mode if a fault exists within said engine, said controller being effective, while in said LOS-electric drive mode, to selectively operate said vehicle by use of only said motor and said generator.

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