Brunswick Corporation

Aaron K Saltsman

Steven J Andrasko

Steven M Anschuetz

Philip Ross Walker

Apparatuses and methods are for cooling exhaust gas emitted from an internal combustion engine in a marine drive. An upstream exhaust conduit is configured to convey exhaust gas from the internal combustion engine. A cooling jacket is located on the upstream exhaust conduit. A cooling passage is located radially between the upstream exhaust conduit and the cooling jacket. The cooling passage is configured to convey cooling fluid along an outer periphery of the upstream exhaust conduit to a location where the cooling fluid is mixed with the exhaust gas. A downstream exhaust conduit conveys the exhaust gas from the upstream exhaust conduit. An orifice device is configured to radially outwardly spray the cooling fluid from the cooling passage onto an inner radial surface of the downstream exhaust conduit so that the cooling fluid cools the downstream exhaust conduit and mixes with and cools the exhaust gas.

Apparatuses and methods for cooling exhaust gas emitted from an internal combustion engine in a marine drive

A method and system position a marine propulsion device with respect to a transom of a marine vessel to which it is coupled. A controller determines whether an actual speed representing a speed of the vessel or a speed of an engine powering the propulsion device is greater than a given speed and whether a transmission of the propulsion device is in forward gear, and if so, sets a trim control unit of the controller to a ready state. If the transmission is shifted out of forward gear while the trim control unit is in the ready state, the controller sets the trim control unit to an active state. The controller determines whether an actual trim position of the propulsion device is less than a target trim position while the trim control unit is in the active state, and if so, sends a signal to trim the propulsion device up.

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Appleton, WI, United States of America

Aaron K Saltsman