Engine exhaust emission control system in outboard engine system

Details Engine exhaust emission control system in outboard engine system Engine exhaust emission control system in outboard engine system

1996-12-12

1999-06-29

Denion, Thomas E.

Power plants

Internal combustion engine with treatment or handling of...

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

440 89, F01N 310

Patent

active

059161353

ABSTRACT:
An exhaust gas emission control system for a 4-cycle outboard engine is disclosed. The engine comprises a mounting member; an engine block mounted on the mounting member; an extension housing coupled to the mounting member and extending downward therefrom; and an engine oil pan mounted under the mounting member within the extension housing. The oil pan has a recess formed therein in the lengthwise direction. An exhaust gas expansion chamber is formed in the extension housing for receiving exhaust gas from the exhaust manifold of the engine. The engine exhaust emission control system comprises a catalyst assembly positioned in the exhaust gas expansion chamber, the catalyst assembly having a catalyst case aligned with the oil pan in the lengthwise direction thereof. At least a portion of the catalyst case is disposed in the recess in the oil pan.

REFERENCES:
patent: 5100351 (1992-03-01), Shibata
patent: 5118316 (1992-06-01), Kakizaki et al.
patent: 5439651 (1995-08-01), Kato
patent: 5546748 (1996-08-01), Iwai et al.
patent: 5553586 (1996-09-01), Koishikawa
patent: 5554060 (1996-09-01), Koishikawa

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