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Circulating cooling installation for piston internal combustion engines

  • US 3,877,443 A
  • Filed: 03/22/1974
  • Issued: 04/15/1975
  • Est. Priority Date: 03/22/1973
  • Status: Expired due to Term
First Claim
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1. A circulating cooling installation for piston internal combustion engines, which comprises cooling jacket means and control means operable to limit the cooling medium circulation through the cooling jacket means at least within the area of the combustion zones of the engine up to a first predetermined limit value after the cold start of the engine, above the first predetermined limit value to initially confine the circulation to a closed circulation by-passing a radiator means and avoiding a fresh water exchange, and above a further predetermined temperature limit value to include in the cooling medium circulation the radiator means and at least one of heat-exchanger means and fresh water exchange, the control means including a first means and a three-way thermostat means each having a separate control element, the first means being actuated after reaching the first limit value and the three-way thermostat means being actuated after reaching the further temperature limit value, characterized in that the control element of said first means is arranged at a place at which at least approximately the highest occurring cooling medium temperature becomes effective when the cooling medium stands still, whereas the control element of the three-way thermostat means is disposed in the flow area of the closed circulation.

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