INTERNAL COMBUSTION ENGINE - HONDA MOTOR CO LTD

Title:

INTERNAL COMBUSTION ENGINE

Document Type and Number:

WIPO Patent Application WO/2002/059467

Kind Code:

A1

Abstract:

An internal combustion engine, wherein the temperature of exhaust gas lowers gradually from the upstream side to the downstream side in the flow direction thereof and the temperature of a working medium for a heat exchanger flowing in the direction reverse to that of the exhaust gas rises gradually from the upstream side to the downstream side in the flow direction thereof, a temperature difference between the exhaust gas temperature and the working medium temperature is minimized in a boundary portion between the liquid phase area and the two-phase area of the working medium, and a catalyst device is positioned near the minimum temperature difference position and assembled on the upstream side in the flow direction of the exhaust gas, whereby a heat generated by the catalyst device can be utilized effectively by the heat exchanger and, since the catalyst device is disposed in the two-phase area of the working medium with a constant temperature and the constant temperature is a catalyst activity temperature, the catalyst device allows the catalyst to develop a stable exhaust gas purification performance.

Inventors:

NISHIMOTO SEIJI (JP)
BABA TSUYOSHI (JP)
TAKAHASHI KAZUYA (JP)

Application Number:

PCT/JP2002/000383

Publication Date:

August 01, 2002

Filing Date:

January 21, 2002

Export Citation:

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Assignee:

HONDA MOTOR CO LTD (JP)
NISHIMOTO SEIJI (JP)
BABA TSUYOSHI (JP)
TAKAHASHI KAZUYA (JP)

International Classes:

F01N3/20; F01N5/02; (IPC1-7): F01N3/24; F01N5/02

Foreign References:

JPH05256162A	1993-10-05
EP1033481A1	2000-09-06
JP2000045764A	2000-02-15

Other References: