Exhaust-gas purification device for an internal combustion engin

Details Exhaust-gas purification device for an internal combustion engin Exhaust-gas purification device for an internal combustion engin

1993-08-20

1995-05-02

Lazarus, Ira S.

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

60297, 60311, 60324, F01N 320

Patent

active

054108756

ABSTRACT:
An exhaust-gas purification device for an internal combustion engine or the like which can effectively purify hydrocarbon (HC) among the toxic components of the exhaust-gas emitted by the engine or the like even when the temperature of said exhaust-gas is relatively low, and an exhaust-gas purification device, wherein, in an exhaust system in which a first purification-treatment section 4 carrying a catalyst 3 is placed in a main exhaust passage 2, a bypass passage 5 is placed which diverges from said main exhaust passage 2 and which later returns to said main exhaust passage 2 at a certain distance, and a second purification treatment section 7 carrying an absorbent 6 is placed in said bypass passage 5.

REFERENCES:
patent: 2747976 (1956-05-01), Houdry
patent: 3197287 (1965-07-01), Innes
patent: 3338682 (1967-08-01), Fowler
patent: 4485621 (1984-12-01), Wong
patent: 4974414 (1990-12-01), Kono
patent: 5090200 (1992-02-01), Arai
patent: 5125231 (1992-06-01), Patil
patent: 5140811 (1992-08-01), Minami
patent: 5195318 (1993-03-01), Shinzawa
patent: 5271906 (1993-12-01), Yuuki et al.

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