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Fuel efficient powertrain cooling systems and radiator modules

  • US 10,393,005 B2
  • Filed: 06/17/2010
  • Issued: 08/27/2019
  • Est. Priority Date: 06/17/2010
  • Status: Active Grant
First Claim
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1. A powertrain cooling system for deployment onboard a vehicle including an engine compartment, the powertrain cooling system comprising:

  • a first airflow path;

    a second airflow path;

    a primary radiator core positioned in the first airflow path;

    an auxiliary radiator core positioned in the second airflow path; and

    a first airflow valve positioned in the second airflow path upstream of the auxiliary radiator core, the first airflow valve movable between a closed position wherein the first airflow valve impedes airflow to the auxiliary radiator core and an open position;

    wherein the cooling efficiency of the primary radiator core is greater than the cooling efficiency of the auxiliary radiator core such that the primary radiator core rejects a given amount of heat to a reduced volume of airflow as compared to the auxiliary radiator core, and wherein the first airflow path directs the airflow discharged by the primary radiator core around and not into the engine compartment.

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