Brunswick Corporation

Chetan Avinash Dharmadhikari

Barry P Schleicher

John A Groeschel

Paul M Radavich

Adam J Kurzynski

Pankaj Ankush Jagadale

Steven J Amerling

Douglas D Reichardt

Thomas F Nickols

Nathan C King

John T Ledden

John N Oenick

Evan N Kobman

Katelyn A Vara

Vinodh Kumar Balakrishnan

Clint Szumal

Robert Dreyer

Grant Shane

Daanish Tyrewala

Jacob D Packianathan

A thermal management system for a marine vessel. The thermal management system includes an open loop circuit and a pump that pumps water from a body of water, through the open loop circuit, and back to the body of water. The thermal management system further includes a closed loop circuit and a pump that pumps a heat transfer fluid through the closed loop circuit. A heat exchanger is configured to exchange heat between the water and the heat transfer fluid. The thermal management system includes multiple components each cooled or heated by the heat transfer fluid. A valve has valve positions configured to vary a sequence that the heat transfer fluid is conveyed to the components so as to vary how the components share the heating and cooling from the heat transfer fluid and from the water from the body of water via the heat transfer fluid.

Thermal management systems and methods for thermally managing components for marine vessels

A stern drive for a marine vessel having a transom. The stern drive has a drive assembly comprising a drive unit configured to generate a thrust force in water and a powerhead configured to power the drive unit, and a transom bracket assembly configured to support the drive unit outside of the transom and further configured to support the powerhead inside of the transom, wherein the transom bracket assembly is configured to vibrationally isolate the drive unit and powerhead relative to the transom.

Stern drives and transom bracket assemblies for stern drives providing vibration isolation

A marine drive is configured for propelling a marine vessel in a body of water. The marine drive has a transom bracket assembly configured to mount the marine drive to the marine vessel, a drive assembly coupled to the transom bracket assembly and configured to generate a thrust force in the body of water, the drive assembly being trimmable up and down relative to the transom bracket assembly, a cooling water pump configured to pump cooling water from the body of the water for cooling at least one component of the marine drive, and a rigid cooling water conduit extending from the drive assembly to the transom bracket assembly, the rigid cooling water conduit being configured to convey the cooling water from the drive assembly to the cooling water pump.

Marine drives having rigid cooling water intake and drain mechanism

A marine drive is for propelling a vessel in body of water. The marine drive has a powerhead, a crankcase on the powerhead, and a cooling system that pumps a first flow of cooling water from the body of water through a powerhead cooling conduit for cooling the powerhead and in parallel pumps a second flow of cooling water from the body of water through a crankcase cooler for cooling the crankcase and lubricant in the crankcase. A valve controls the second flow of the cooling water to the crankcase cooler. The valve is normally positioned in a closed position, which inhibits the second flow of cooling water to the crankcase cooler and thereby reduces condensation of water from the lubricant in the crankcase. The valve is moved into an open position upon operation of the powerhead at or above a threshold speed, which permits the second flow of cooling water to the crankcase cooler and thereby cools the lubricant in the crankcase. Corresponding methods of operating the marine drive and cooling system are provided.

Marine drives and cooling systems for marine drives having a crankcase cooler

A cooling system for a marine inboard internal combustion engine includes at least one engine cooling passage disposed in thermal communication with heat emitting portions of the engine. A pump is in fluid communication with the at least one engine cooling passage. The pump draws cooling water out of the at least one engine cooling passage. At least one outlet drain is downstream of the pump for discharging the cooling water that was pumped out of the at least one cooling passage. A switch activates the pump in response to the following: an operator command to stop the engine and/or a speed of the engine being below a threshold speed.

Active draining of engine cooling system

A marine engine has a powerhead, a crankcase and a crankshaft disposed in the crankcase. A cooling system has a cooling passage that conveys cooling water for cooling the crankcase, a pump that pumps the cooling water from a body of water in which the marine engine is operated through the cooling passage, and a valve that controls discharge of the cooling water from the cooling passage.

Marine engines and cooling systems for cooling lubricant in a crankcase of a marine engine

A marine engine has first and second banks of piston-cylinders, and first and second cooling water passages that convey cooling water in parallel alongside the first and second banks of piston-cylinders, respectively. A cooling water pump pumps the cooling water through the first and second cooling water passages. A first temperature-responsive valve is configured to discharge the cooling water from both of the first and second cooling water passages when the cooling water reaches a first temperature threshold. A second temperature-responsive valve is configured to discharge the cooling water from both of the first and second cooling water passages when the cooling water reaches a second temperature threshold that is greater than the first temperature threshold.

Cooling systems for marine engines having offset temperature-responsive discharge valves

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 cowling for an outboard motor has port and starboard intake ports that direct flow of intake air into the cowling and extend downwardly along the aftward side of the cowling and face laterally outwardly. A duct system receives and conveys intake air intake ports to an intake conduit for the outboard motor. The duct system includes port and starboard intake troughs that extend alongside the intake ports and redirect the intake air from a generally lateral flow into the intake ports to a generally vertically downward flow and then to a generally forward flow towards the intake conduit. Port and starboard baffles that extend alongside the intake ports and direct flow of water into port and starboard channels located alongside the baffles, respectively. The channels drain the water by gravity depending on tilt and trim orientation of the outboard motor.

Growing community of inventors

North Fond du Lac, WI, United States of America

Chetan Avinash Dharmadhikari