Marine propulsion – Means for accomodating or moving engine fluids – Cooling for engine
Patent
1996-05-17
1998-03-24
Basinger, Sherman
Marine propulsion
Means for accomodating or moving engine fluids
Cooling for engine
60299, 60302, 60317, B63H 2112
Patent
active
057306320
ABSTRACT:
An outboard motor includes an exhaust emission control system which is arranged rationally and neatly in the housing of an outboard motor body, irrespective of various limitations on the outside shape of the housing. An oil pan disposed below an engine of the outboard motor has an oil holding portion, and an exhaust pipe is disposed vertically along a vertical wall portion of the oil holding portion. A catalytic converter is disposed in an intermediate portion of the exhaust pipe in confronted relation to the vertical wall portion. The catalytic converter has a particular shape in horizontal section which is greater in size in a first direction than in a second direction perpendicular to the first direction. A fresh-air delivery passage is provided for introducing fresh air into an exhaust passage disposed upstream of the exhaust pipe. The fresh-air delivery passage is connected at one end to the top plate of an intake box and includes a check valve disposed at an intermediate portion of the fresh-air passage. The check valve is adapted to open only when the pressure in the exhaust passage is less than the atmospheric pressure. The exhaust system is perfectly protected against a possible entry of water and an engine combustion failure and corrosion of the exhaust system resulting therefrom.
REFERENCES:
patent: 2024193 (1935-12-01), Watkins
patent: 3195521 (1965-07-01), Larsen
patent: 4583953 (1986-04-01), Nakase
patent: 4983135 (1991-01-01), Boda et al.
patent: 5174112 (1992-12-01), Sougawa et al.
patent: 5408829 (1995-04-01), Woodward
patent: 5439404 (1995-08-01), Sumigawa
patent: 5501621 (1996-03-01), Shigedomi et al.
patent: 5554060 (1996-09-01), Koishikawa et al.
Kawamura Hiroshi
Murata Hiroyuki
Basinger Sherman
Honda Giken Kogyo Kabushiki Kaisha
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