Method and system for a dual loop coolant system
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United States of America Patent
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May 8, 2018
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app pub date -
Nov 19, 2014
filing date -
Nov 19, 2014
priority date (Note) -
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Abstract
Methods and systems are provided for a dual loop coolant system used to control an engine transmission oil temperature. In one example, a high temperature coolant loop comprises a first heat exchanger and a control valve positioned upstream of the first heat exchanger whose coolant flow is separate from a second, low temperature coolant loop containing a second heat exchanger. An engine fluid circuit fluidically coupling the first heat exchanger, second heat exchanger, and an engine system component via a bypass valve positioned between the first heat exchanger and the second heat exchanger.
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