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Exhaust bypass flow control for exhaust heat recovery

Patent ·
OSTI ID:1221376
An exhaust system for an engine comprises an exhaust heat recovery apparatus configured to receive exhaust gas from the engine and comprises a first flow passage in fluid communication with the exhaust gas and a second flow passage in fluid communication with the exhaust gas. A heat exchanger/energy recovery unit is disposed in the second flow passage and has a working fluid circulating therethrough for exchange of heat from the exhaust gas to the working fluid. A control valve is disposed downstream of the first and the second flow passages in a low temperature region of the exhaust heat recovery apparatus to direct exhaust gas through the first flow passage or the second flow passage.
Research Organization:
GM Global Technology Operations LLC, Detroit, MI (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-04NT42278
Assignee:
GM Global Technology Operations LLC (Detroit, MI)
Patent Number(s):
9,140,168
Application Number:
12/752,648
OSTI ID:
1221376
Country of Publication:
United States
Language:
English

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