Exhaust heat recovery system

Details Exhaust heat recovery system Exhaust heat recovery system

2007-02-20

2007-02-20

Tran, Binh Q. (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

Exhaust gas or exhaust system element heated, cooled, or...

C060S274000, C060S275000, C060S287000, C060S292000, C422S109000, C422S199000, C422S200000, C136S205000, C136S211000, C136S236100

Reexamination Certificate

active

11075940

ABSTRACT:
In an exhaust heat recovery system, electric power generation efficiency of a thermoelectric conversion element can be improved, and warming-up of a catalyst can be completed early, without using a complicated device. The exhaust heat recovery system according to the invention includes an exhaust pipe in which exhaust gas discharged from an internal combustion engine flows; a catalyst which purifies the exhaust gas; a heat recovery portion which is fitted to the exhaust pipe, and which recovers heat contained in the exhaust gas; a thermoelectric conversion element which generates electric power using thermoelectric conversion; and a heat pipe which connects the heat recovery portion to the thermoelectric conversion element, and which transfers the heat recovered in the heat recovery portion to the thermoelectric conversion element. An operation starting temperature of the heat pipe is set so as to be higher than an activation temperature of the catalyst.

REFERENCES:
patent: 4753682 (1988-06-01), Cantoni
patent: 5968456 (1999-10-01), Parise
patent: 6172427 (2001-01-01), Shinohara et al.
patent: 6986247 (2006-01-01), Parise
patent: 407012009 (1995-01-01), None
patent: 2003-65045 (2003-03-01), None
patent: 02005223132 (2005-08-01), None
patent: WO 2004/059138 (2004-07-01), None
patent: WO 2004/059139 (2004-07-01), None

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