Catalytic exhaust system for watercraft

Details Catalytic exhaust system for watercraft Catalytic exhaust system for watercraft

1997-01-24

1998-11-03

Avila, Stephen

Marine propulsion

Means for accomodating or moving engine fluids

Cooling for engine

440 89, B63H 2110

Patent

active

058300228

ABSTRACT:
An improved catalytic exhaust system for a watercraft provides two stage treatment of exhaust gases before expulsion from the watercraft. The catalytic exhaust system also is configured to minimize the restriction the catalysts pose to exhaust gas flow through the exhaust system so as to reduce engine back pressure and improve engine performance. A catalytic device of the exhaust system includes a pre catalyst and a main catalyst positioned downstream from the pre catalyst. The pre catalyst can take the from of a catalytic material coating along a portion of the exhaust flow path and the main catalyst can be a catalyst bed. The exhaust gas flow path through the exhaust system also smoothly tapers into and out of the main catalyst so as to reduce the degree of flow resistance through the main catalyst.

REFERENCES:
patent: 4664054 (1987-05-01), Nishida
patent: 4735046 (1988-04-01), Iwai
patent: 4773883 (1988-09-01), Nakase et al.
patent: 4811560 (1989-03-01), Nakase et al.
patent: 4900282 (1990-02-01), Takahashi et al.
patent: 4982682 (1991-01-01), Hattori
patent: 4989409 (1991-02-01), Nakase et al
patent: 4997399 (1991-03-01), Nakayasu et al.
patent: 5014510 (1991-05-01), Laimbock
patent: 5067448 (1991-11-01), Nakase et al.
patent: 5096446 (1992-03-01), Tazaki et al.
patent: 5174112 (1992-12-01), Sougawa et al.
patent: 5234364 (1993-08-01), Ito
patent: 5251439 (1993-10-01), Nakase et al.
patent: 5280708 (1994-01-01), Nakase et al.
patent: 5324217 (1994-06-01), Mineo
patent: 5346417 (1994-09-01), Isogawa
patent: 5366401 (1994-11-01), Nanami et al.
patent: 5408827 (1995-04-01), Holtermann et al.
patent: 5511505 (1996-04-01), Kobayashi et al.
patent: 5536189 (1996-07-01), Mineo
patent: 5546748 (1996-08-01), Iwai et al.
patent: 5562509 (1996-10-01), Nakase et al.

Affiliated with

Also associated with

Rating

Catalytic exhaust system for watercraft does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Catalytic exhaust system for watercraft, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalytic exhaust system for watercraft will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-683776