Waste heat recovery device of internal combustion engine
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United States of America Patent
Stats
-
Nov 30, 2004
Grant Date -
Feb 12, 2004
app pub date -
Aug 13, 2003
filing date -
Sep 25, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An internal combustion engine waste heat recovery system is provided in which a second heat exchanger, a fifth heat exchanger, a fourth heat exchanger, a third heat exchanger, and a first heat exchanger are disposed sequentially from the upstream side to the downstream side of the flow of exhaust gas in an engine exhaust passage. Water, used as a working medium, is supplied sequentially to the first, second, third, fourth and the fifth heat exchangers. Water having the lowest temperature can be supplied to the first heat exchanger on the most downstream side of the gas flow, to which exhaust gas having a comparatively low temperature is supplied. Water having a comparatively low temperature, which has passed only through the first heat exchanger, can be supplied to the second heat exchanger on the most upstream side.
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