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Electric waterpump, fluid control valve and electric cooling fan strategy

  • US 6,374,780 B1
  • Filed: 07/07/2000
  • Issued: 04/23/2002
  • Est. Priority Date: 07/07/2000
  • Status: Expired due to Term
First Claim
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1. A cooling system control apparatus for controlling the temperature of engine coolant in a coolant-cooled engine comprising:

  • a radiator for cooling the engine coolant;

    at least one electric fan for supplying air to said radiator;

    an electric water pump for circulating said engine coolant through an engine cooling system circuit including said radiator;

    a flow control valve coupled between said engine and said electric water pump;

    a plurality of input sensors; and

    a powertrain control unit electrically coupled to said at least one electric fan, said flow control valve, said electric water pump and said plurality of input sensors, said powertrain control unit adapted to control the operation of said electric water pump, said flow control valve and said electric fan as a function of said input sensors to optimize fuel economy, emissions, thermal management and electrical load management.

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