Exhaust gas cleaning device for internal combustion engine

Details Exhaust gas cleaning device for internal combustion engine Exhaust gas cleaning device for internal combustion engine

1990-08-28

1992-09-29

Kummert, Lynn M.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

422181, 422218, 422222, 55486, 55523, 55524, 55DIG30, 60299, 60302, 181248, 181258, 181267, 181290, F01N 310

Patent

active

051512548

ABSTRACT:
An exhaust gas cleaning device is disposed within an exhaust pipe connected to the exhaust port of an internal combustion engine. The exhaust gas cleaning device comprises an inner pipe disposed coaxially within the exhaust pipe with an annular space defined therebetween, the inner pipe being provided with a plurality of perforations, and laminated structures disposed upon the inner and outer surfaces of the inner pipe and including a catalyst for cleaning unburned components of the exhaust gas flowing within the exhaust pipe, each of the laminated structures being formed of a material which is not deleterious to the catalyst. The laminated structure includes a catalyst carrier layer formed by, in accordance with one method, fusibly injecting a catalyst including a solution onto an intermediate layer formed upon the inner and outer surfaces of the inner pipe and drying the same so as to remove the liquid component therefrom. The laminated structure may also be formed upon the inner surface of the exhaust pipe so as to improve the exhaust gas cleaning effect.

REFERENCES:
patent: 4728503 (1988-03-01), Iida et al.
patent: 5012642 (1991-05-01), Laimbock
patent: 5014510 (1991-05-01), Laimbock

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