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Engine cooling system and method for operating the same

  • US 9,988,968 B2
  • Filed: 10/15/2015
  • Issued: 06/05/2018
  • Est. Priority Date: 12/17/2014
  • Status: Active Grant
First Claim
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1. An engine cooling system, comprising:

  • a refrigerant circulation flow channel passing through the interior of an engine;

    a refrigerant pump configured to circulate a refrigerant through the refrigerant circulation flow channel;

    an electromagnetic valve arranged in the refrigerant circulation flow channel and changing a flow rate of the refrigerant passing through the engine; and

    a control unit configured to start/stop the refrigerant pump and open/close the electromagnetic valve, whereinwhen the electromagnetic valve is in a closed state and the refrigerant pump is in operation, the control unit stops operation of the refrigerant pump, waits a first predetermined time period after stopping the refrigerant pump, and shuts off voltage application to the electromagnetic valve after waiting the first predetermined time period.

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