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Electric vehicle coolant pump assembly

  • US 5,529,114 A
  • Filed: 06/10/1994
  • Issued: 06/25/1996
  • Est. Priority Date: 06/10/1994
  • Status: Expired due to Term
First Claim
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1. A coolant pump assembly for an electric vehicle propulsion system, comprising:

  • a positive displacement pump having an inlet port, an outlet port, and a rotor;

    a variable-speed ac motor having a rotatable shaft mated with the rotor of the pump for rotating the rotor of the pump to circulate coolant through the inlet and outlet ports of the pump; and

    control means, communicating with a DC power source of the electric vehicle propulsion system, for controlling the speed of the motor to provide a variable coolant flow through the electric vehicle.

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