Cowling structure for marine propulsion engine
AssigneeSanshin Kogyo Kabushiki Kaisha
InventorHiroshi Oishi
Life of this patent
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Abstract
An outboard motor and particularly an improved protective cowling for an outboard motor that provides a very simple air inlet but one which is effective in preventing the passage of water to the interior of the protective cowling and for separating and draining water from the inducted air. The drained water is returned directly to the atmosphere. The air inlet system for the protective cowling is formed by only two members so as to facilitate a simple and low cost construction.
Claims25
A cowling arrangement for the power head of an outboard motor for protecting an enclosed internal combustion engine from water while permitting adequate air flow from the atmosphere to the engine for combustion, said cowling including means forming an upwardly facing air outlet duct communicating with the interior of said cowling for supplying air to the engine and surrounded by a surface having a downwardly sloping portion, a further portion of said cowling have a part extending in confronting relation to said air outlet duct and defining with said surrounding surface an air cavity, means defining an air inlet opening communicating said cavity with the atmosphere for atmosphere air flow into said cavity, and means defining a water drain separate from said air inlet opening and communicating a lower area of said downwardly sloping portion directly with the atmosphere externally of said cowling for draining of water from said cavity to the atmosphere and away from said air outlet duct.
A cowling arrangement for the power head of an outboard motor for protecting an enclosed internal combustion engine from water while permitting adequate air flow from the atmosphere to the engine for combustion, said cowling including means forming an upwardly facing air outlet duct communicating with the interior of the said cowling for supplying air to said engine, a further portion of said cowling having a part extending in confronting relationship to said air outlet duct and defining an air cavity around said air outlet duct, said further portion solely defining an air inlet opening and communicating with said cavity and an air inlet duct extending in surrounding relationship to said air inlet opening into said cavity in an upwardly directed direction for supplying atmosphere air to said air outlet duct.
Dependencies are inferred from the claim text.