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Automotive liquid-cooled electronic control apparatus

  • US 4,893,590 A
  • Filed: 09/28/1988
  • Issued: 01/16/1990
  • Est. Priority Date: 09/30/1987
  • Status: Expired due to Term
First Claim
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1. An electronic control apparatus for use in an automobile, comprising:

  • (a) a base having a passage defined therein for circulation of an engine cooling water and semiconductor devices disposed on a side of said base, said base being made of a material having a good thermal conductivity; and

    (b) an enclosure fixed to said side of said base to hermetically cover said semiconductor devices;

    wherein a flow control valve is disposed at an inlet side of said passage, said flow control valve being arranged to open when a temperature of said engine cooling water has reached a predetermined temperature.

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