Internal combustion engine block having a cylinder liner shunt flow cooling system and method of cooling same

  • US 5,299,538 A
  • Filed: 05/05/1993
  • Issued: 04/05/1994
  • Est. Priority Date: 06/26/1992
  • Status: Expired due to Term
First Claim
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1. In combination, in an internal combustion engine, a cylinder block, having at least one cylinder bore;

  • a cylinder inner concentrically located within said cylinder bore and secured to said cylinder block;

    a main cooling chamber surrounding said cylinder liner and having an inlet port and at least one outlet port for circulating a coolant fluid about a main portion of said cylinder liner;

    a secondary cooling chamber located about the uppermost portion of said cylinder liner and directly adjacent to said main coolant passage, said secondary cooling chamber having at least one inlet port and at least one output port whereby said fluid coolant may be circulated simultaneously about said main cooling chamber and said secondary coolant chamber;

    said outlet port of said secondary cooling chamber being in fluid communication with the outlet port of said main cooling chamber and comprising a venturi whereby, as coolant from the main cooling chamber flows through the outlet port of said main cooling chamber, there will be created across said venturi a pressure drop which in turn will induce the flow of coolant fluid through said secondary cooling chamber at a flow velocity relative to that flowing through said outlet port sufficient to provide a significantly increased rate of removal of thermal energy per unit area of said cylinder inner at the uppermost portion of said cylinder liner.

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