System and method to decrease warmup time of coolant and engine oil in engine equipped with cooled EGR
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United States of America Patent
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Jan 16, 2018
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app pub date -
Feb 2, 2015
filing date -
Feb 2, 2015
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Abstract
A cooling system and method of using a cooling system for an engine equipped with an exhaust gas recirculation (EGR) system. A pump provides pressure for circulating liquid through the cooling system. The cooling system has two loops: an engine cooling loop and an EGR cooling loop. The engine cooling loop cools the engine in a conventional manner. The EGR cooling loop goes first to an EGR cooler and next to an oil cooler. The heat exchange at the EGR cooler results in warmed coolant being delivered to the oil cooler, where it warms engine oil. Warm-up time for engine oil is thereby decreased.
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