Methods and systems for hybrid vehicle waste heat recovery
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United States of America Patent
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Mar 7, 2017
Grant Date -
Apr 2, 2015
app pub date -
Oct 2, 2013
filing date -
Oct 2, 2013
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Abstract
Systems and methods for operating an engine that includes an exhaust gas heat recovery system are described. The system may selectively or contemporaneously supply energy from engine exhaust gas to generate electricity or warm the engine. In one example, exhaust gas energy raises a temperature of a heat transfer medium and the heat transfer medium is routed to an engine coolant heat exchanger or an expander via a bypass valve.
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