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US 7,299,783 B1Granted
Auxiliary control of airflow through an engine enclosure of an outboard motor
AssigneeBrunswick Corporation
InventorsJeffrey J. Broman, Eric S. Mueller, Paul M. Radavich
Life of this patent
Estimating the term…
Abstract
A marine propulsion device is provided with an air control system that draws air from the region under the cowl of the outboard motor and induces a flow of air out of the region. The air is caused to flow through a second opening formed in the cowl. As a result, air drawn into the cowl through a first opening can flow either into the engine through its throttle body mechanism or out of the space under the cowl, as induced by the operation of the fan.
Claims18
A marine propulsion system, comprising:
- an engine;
- an enclosure surrounding said engine;
- a first opening formed through a first portion of said enclosure;
- a second opening formed through a second portion of said enclosure;
- and
- a powered air moving device disposed below said engine and in fluid communication with said second opening and disposed to cause air to flow through said second opening when said powered air moving device is activated, said powered air moving device being powered by an electric motor.
3 more elements
A marine propulsion system, comprising:
- an engine;
- a cowl structure surrounding said engine;
- a first opening formed through said cowl structure;
- a second opening formed through said cowl structure;
- and
- a powered air moving device disposed in fluid communication with said second opening and disposed to cause air to flow through said second opening when said powered air moving device is activated, said powered air moving device being configured to draw air out of said cowl structure and cause said air to flow through said second opening;
- a timer connected in electrical communication with said powered air moving device to deactivate said powered air moving device after a predetermined time interval following a predetermined event associated with said engine;
- said cowl structure having a forward end facing the direction of propulsion, and an aft end facing oppositely to said forward end, said second opening being at said aft end of said cowl structure.
5 more elements
A marine propulsion system, comprising:
- an engine;
- a cowl structure surrounding said engine;
- a first opening formed through said cowl structure;
- a second opening formed through said cowl structure;
- a fan which is a powered air moving device powered by an electric motor and disposed in fluid communication with said second opening and disposed to cause air to flow through said second opening when said fan is activated, said powered air moving device being configured to draw air out of said cowl structure and cause said air to flow through said second opening;
- a conduit extending from said second opening to a preselected position within said cowl structure, said fan being disposed in fluid communication with said conduit to cause air to flow through said conduit and out of said cowl structure through said second opening;
- said cowl structure having a forward end facing in the direction of propulsion, and aft end facing oppositely from said forward end;
- said first and second openings are on the same one of said ends of said cowl structure.
5 more elements
Dependencies are inferred from the claim text.