Brp US Inc.

Bombardier Recreational Products Inc.

Roger Raetzman

Justin Johnson

Patrick C Tetzlaff

Joseph Zamora

Mark C Noble

Peter E Lucier

Todd D Craft

Nathan Blank

Dave Calamia

Guillaume Longpre

Philippe Petit

George Broughton

Darrell Wiatrowski

Dale A Wiegele

Michael W Freitag

John Charles Scott

Kenneth J Chung

Vincent Groleau

Mike Davenport

John Feuerstein

Jeff T Turner

Simon Pfiffner

Tony Urbanik

Todd P Craft

Claude Trahan

An outboard engine assembly has an engine unit including an engine unit housing, an internal combustion engine disposed in the engine unit housing, the engine defining at least one combustion chamber, an exhaust system fluidly communicating with the at least one combustion chamber for supplying exhaust gases from the at least one combustion chamber to an exterior of the outboard engine assembly, a gearcase connected to the engine unit housing, a control module connected to the engine for controlling at least one operating parameter of the outboard engine assembly, and a water sensor disposed at least in part in the exhaust system for detecting presence of water in the exhaust system, the water sensor being in communication with the control module, and a propulsion device operatively connected to the engine.

Outboard engine assembly

A marine engine assembly has a housing including an outer housing having a front wall, an inner housing disposed in the outer housing and being connected to the outer housing by at least one housing fastener disposed at at least one first position, a cover removably connected to the outer housing, and a gearcase connected to a lower portion of the outer housing. An internal combustion engine has a front face connected to and supported by the inner housing by at least one engine fastener disposed at at least one second position being different from the at least one first position, and a crankshaft defining a crankshaft axis intersecting the front wall of the outer housing. The inner housing is disposed at least in part between the front face of the internal combustion engine and the front wall of the outer housing.

Marine engine assembly

An exhaust valve assembly for a two-stroke internal combustion engine has a housing adapted for connection to an engine block of the two-stroke internal combustion engine; an electric actuator having an electric motor, the electric motor being disposed in the housing; and at least one reciprocating exhaust valve operatively connected to the electric actuator. The at least one exhaust valve is linearly movable by the electric motor. A portion of the at least one exhaust valve is disposed in the housing.

Exhaust valve, exhaust valve assembly and exhaust valve system for two-stroke internal combustion engines, two-stroke internal combustion engine having same and method for cleaning an exhaust valve

A reciprocating exhaust valve for a two-stroke internal combustion engine has a shaft for connection to a valve actuator, the shaft defining a reciprocation axis of the valve, the reciprocation axis defining a longitudinal direction of the valve; and a blade having: a first end having an arcuate edge, a second end connected to the shaft, two side portions, and a central portion. The blade has a first end portion adjacent the first end that includes a part of the central portion and of each of the two side portions. A width of the central portion is greater than a width of each of the side portions. In the first end portion, a thickness of the part of each of the two side portions is greater than a thickness of the part of the central portion.

A two-stroke internal combustion engine has an engine block having a cylinder block and a cylinder head. The cylinder block defines a cylinder, an exhaust passage, and an exhaust valve passage. The engine also has a piston, an exhaust valve actuator operatively connected to at least one of the cylinder block and the cylinder head, and a reciprocating exhaust valve disposed at least in part in the exhaust valve passage. The exhaust valve has a shaft operatively connected to a valve actuator, and a blade connected to the shaft. A channel is defined along a face of the blade. The channel and a wall of the exhaust valve passage together define at least in part a valve passage. The valve passage permits flow of exhaust gas along the face of the blade. A width of the valve passage is at least a third of a width of the blade.

A marine engine for propelling a watercraft has a drive unit adapted to be pivotally connected about a steering axis to the watercraft, and a steering position sensing system. The steering position sensing system has a magnet housing operatively connected to the drive unit and having an arcuate portion, a magnet disposed in the magnet housing, a sensor housing adapted to be operatively connected to the watercraft and a sensor disposed in the sensor housing. The magnet housing and the magnet are pivotable about the steering axis with the drive unit and relative to the sensor housing. The arcuate portion of the magnet housing is spaced from the sensor housing. The sensor senses a magnetic field of the magnet to determine an angular position of the drive unit relative to the watercraft. A bracket assembly for mounting an outboard engine to a watercraft is also disclosed.

Steering position sensing system for a marine engine

A gear case assembly for a marine propulsion system has a gear case having a first end adapted to connect the gear case to a remainder of the marine propulsion system, and a second end disposed opposite the first end. A driveshaft is disposed at least in part in the gear case. A propeller shaft, operatively connected to an end of the driveshaft, is disposed at an angle thereto. The end of the driveshaft and at least a portion of the propeller shaft are disposed in a transmission chamber defined in the gear case. An expansion port is defined in the gear case. A container, defining an expansion chamber, is disposed outside the gear case. The expansion port fluidly communicates the transmission chamber with the expansion chamber. An outboard engine is also disclosed.

Marine propulsion system gear case assembly

A marine outboard engine includes an engine having a front, back, top and two lateral sides. A cowling, covering the engine at least partially, includes a central support structure fixedly connected to at least one of the engine, a swivel bracket, and an exhaust system. The central support structure extending across at least a portion of the front, top and back of the engine defines at least partially a space through which at least a portion of at least one of its lateral sides is accessible. The space is selectively covered by at least one side panel which is at least partially selectively connected to the central support structure and at least partially disconnectable therefrom to reveal the portion of the at least one of the lateral sides of the engine while the central support structure extends across at least the portion of the front, top and back thereof.

Marine engine cowling

A marine outboard engine has a cowling having at least one rear panel at a rear end of the cowling. The cowling encloses a power head. A plurality of mount points are disposed inside the cowling and adapted for rigidly mounting a tie-bar bracket. Each mount point is rigidly connected to the power head and has a bracket-mounting hole formed therein. The at least one rear panel has defined thereon a visual indication of an area to be removed to create an opening adapted for receiving therethrough a tie-bar bracket mounted on and extending from the mount points. A tie-bar bracket having a mounting portion and a tie-bar coupling portion is also disclosed. A method of assembling the tie-bar bracket in the cowling is also disclosed.

Mounting system for a rear steering assembly of a marine outboard engine

An internal combustion engine has at least two exhaust ports and a valve assembly. The valve assembly has first and second connectors, first and second actuator pistons connected to their corresponding connectors, the first and second actuator pistons being disposed in first and second chambers respectively, and first and second valves connected to their corresponding connectors. The first connector, actuator piston and valve are movable together between first and second positions. The second connector, actuator piston, and valve are movable together between first and second positions. A first fluid line supplies hydraulic fluid in the first and second chambers on a first side of the first and second actuator pistons. A second fluid line supplies hydraulic fluid in the first and second chambers on a second side of the first and second actuator pistons. At least one fluid pump supplies hydraulic fluid to the first and second fluid lines.

Hydraulically actuated valve assembly for an engine

An apparatus and method for adjusting a throttle plate of a throttle assembly of an internal combustion engine is disclosed. A throttle linkage mechanically connects a throttle actuator to the throttle assembly with a deadband therebetween. The deadband allows the throttle plate to remain in a closed position during initial movement of the throttle actuator and initial acceleration, thereby reducing overall engine noise.

Throttle assembly having deadband linkage

A throttle linkage for use with an internal combustion engine is disclosed which connects a throttle actuator to a throttle assembly. The throttle linkage is nonadjustable and interacts with a plurality of throttle stops integrally formed with an engine block. Such an arrangement prevents tampering in advanced two-stroke engines and ensures emission output at a level well below that allowed.

Growing community of inventors

Pleasant Prairie, WI, United States of America

Roger Raetzman