Brunswick Corporation

Katelyn A Vara

Douglas D Reichardt

Jeremy J Kraus

Chetan Avinash Dharmadhikari

Pankaj Ankush Jagadale

Joseph J Klemp-Hawig

Vinodh Kumar Balakrishnan

Daanish Tyrewala

A marine propulsion device has an engine; an exhaust manifold for conveying exhaust gas from the engine; a cooling water jacket on the exhaust manifold, wherein a cooling water passage for conveying cooling water alongside the exhaust manifold is defined between the cooling water jacket and exhaust manifold; and a cooling water sprayer that sprays cooling water into the exhaust manifold. A manually serviceable cooling water strainer configured to strain cooling water supplied from the cooling water passage to the cooling water sprayer. The manually serviceable cooling water strainer can be manually coupled to and manually uncoupled from the marine propulsion device without use of a tool.

Serviceable cooling water strainers for straining cooling water in marine propulsion devices

An exhaust manifold is for an outboard motor having an internal combustion engine. The exhaust manifold has an exhaust conduit that conveys exhaust gas from the internal combustion, and a cooling jacket on the exhaust conduit. The cooling jacket defines a first cooling water passage that conveys cooling water in a first direction alongside the exhaust conduit, a second cooling water passage that conveys the cooling water from the first cooling water passage in an opposite, second direction alongside the exhaust conduit, and third cooling water passage that is separate from the first and second cooling water passages and conveys spent cooling water from the internal combustion engine to a thermostat.

Exhaust conduit cooling jacket and thermostat configuration for outboard motors

A marine propulsion device includes an internal combustion engine; an axially elongated exhaust conduit that conveys exhaust gas from the upstream internal combustion engine to a downstream outlet; a cooling water sprayer that is configured to spray a flow of cooling water radially outwardly toward an inner diameter of the axially elongated exhaust conduit; a temperature sensor located downstream of the cooling water sprayer and configured to sense temperature of the exhaust gas and cooling water; and a controller configured to identify a fault condition associated with the cooling water sprayer based on the temperature of the exhaust gas and cooling water.

Cooling systems for marine propulsion devices having cooling water sprayers for cooling exhaust conduit

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Van Dyne, WI, United States of America

Katelyn A Vara