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Heat exchanger, particularly oil cooler

  • US 6,527,046 B1
  • Filed: 12/30/1999
  • Issued: 03/04/2003
  • Est. Priority Date: 06/02/1999
  • Status: Expired due to Term
First Claim
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1. An oil cooler comprising a core provided with passages for oil and passages for a cooling medium, said core being divided into a first and a second section through which the oil can successively flow;

  • a first collection tank for supplying the oil to said first section and a second collection tank for withdrawing the oil from the second section;

    a third collection tank interconnecting said sections;

    a bypass line connected with said third collection tank and in parallel with said second section; and

    means for gradually activating and deactivating said bypass line between a fully opened state and a fully closed state and for hereby gradually changing an oil flow through said second section between a maximum portion if said bypass line is fully closed and a small remaining portion if said bypass line is fully opened; and

    a partition provided with holes and dividing said third collection tank into two parts, one of said parts being assigned to said first section, while another of said parts is assigned to said second section, said bypass line being connected with said one of said parts of said third collection tank.

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