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Vehicle controller

  • US 6,493,611 B2
  • Filed: 03/19/2001
  • Issued: 12/10/2002
  • Est. Priority Date: 04/06/2000
  • Status: Expired due to Term
First Claim
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1. A controller for a vehicle having an engine, a generator connected to the engine, an electrical motor connected to the vehicle drive shaft and a battery electrically connected to the generator and the electrical motor, comprising,sensors to detect operational conditions of the vehicle, and a microprocessor programmed to:

  • calculate a first parameter showing a target output of the electrical motor based on operational conditions of the vehicle;

    calculate a second parameter showing a target output of the engine based on the first parameter;

    calculate a third parameter showing a target rotation speed of the generator based on the second parameter;

    calculate a fourth parameter showing a generated output of the generator based on the second parameter;

    calculate a fifth parameter showing a target output of the electrical motor by limiting the first parameter in response to the fourth parameter;

    control the operation of the engine based on the second parameter;

    control the operation of the generator based on the third parameter; and

    control the operation of the electrical motor based on the fifth parameter.

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