Suctioned air introducing system for the outboard motor
AssigneeSanshin Kogyo Kabushiki Kaisha
InventorsNoriyoshi Hiraoka, Toyoshi Suzuki
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Abstract
The present invention provides an improved cowling and air inlet arrangement for the powerhead of an outboad motor, having an internal combustion engine including an induction system, which will prevent water from splashing upon the outer surface of the engine contained therein. Damage to the engine due to corrosion, or other such phenomena is avoided, since the arrangement of the invention does not permit water to impinge upon the engine.
Claims16
A cowling and air intake arrangement for a powerhead of an outboard motor having an internal combustion engine including an induction system, comprising:
- a main cowling portion fixed to a lower cowling tray;
- an engine cavity between said main cowling portion and said lower cowling tray;
- an air intake chamber formed in an upper, rearward portion of said main cowling portion;
- an air intake port opening to the atmosphere along a rearward portion of said air intake chamber;
- an air passage duct positioned laterally adjacent to said air intake chamber;
- wherein said air intake chamber and said air passage duct are provided with respective floors which substantially partition the bottom portions of said air intake chamber and said air passage duct from said engine cavity;
- and, also, wherein said air intake chamber and said air passage duct are provided with respective walls which extend upwardly from said floors;
- and further comprising a passageway communicating said air intake chamber and said air passage duct;
- and a gap located between an uppermost portion of said wall of said air passage duct and an inner, upper portion of said main cowling for allowing intake air flowing towards said engine induction system to pass from said air passage duct into said engine cavity.
A protective outer cowling for the internal combustion engine of an outboard motor, said protective cowling comprising a main cowling member defining at least in part a cavity in which said engine is contained, a duct forming member affixed to said main cowling member, within said main cowling member, to define an air inlet path from an atmospheric air inlet formed at least in part by said outer cowling member and said cavity, said air inlet path being defined at least in part by portions of said main cowling member and said duct forming member which extend horizontally above the outer periphery of said engine so that air entering said cavity must flow horizontally across the upper portion of said engine for preventing any entrained water from falling vertically onto said engine;
- and wherein a rearwardmost portion of said duct forming member an outlet gutter, said outlet gutter having a floor which slopes downwardly towards the rear of said cowling.
Dependencies are inferred from the claim text.