Outboard Marine Corporation

Paul W Breckenfeld

George L Broughton

Gregory J Binversie

James A Nettles

James E Macier

Gene F Baltz

Duane E Rogers

William D Dunham

Stephen J Towner

Philip A Anderson

David W Mate

David C Calamia

William A Bernau

Ronald E Gibbs

William R Krueger

Wolfram Hellmich

H Norman Petersen

Theodore J Holtermann

Peter W Brown

Francis A McGinnity

Robert L Niemchick

David J Hall

George T Gillespie

Richard T Tunkieicz

David W Windstein

James R DeRam

Erik R Jorgensen

Wallace R Karrasch

Duane W Forquer

Geroge L Broughton

Robert R Wallin

Two-stroke engine piston bowl configurations

A cylinder block for an internal combustion engine includes a mounting surface having therein a crankcase cavity and a pair of cylinders respectively extending from the cavity in acute angular relation to each other and each including a cylinder wall. The cylinder walls include outer ends having cylinder head mounting surfaces, mixture transfer ports, mixture supply ports, gas discharge ports and a main exhaust gas discharge passage. A passage communicates between the exhaust gas discharge ports and with the main exhaust gas discharge passage. Mixture supply passages extend between the mounting surface and the cylinder head mounting surfaces and include reed valves. Branch passages communicate between the transfer ports in the cylinder walls and the mixture supply passages at respective locations between the cylinder head mounting surfaces and the reed valves. Auxiliary supply passages extend from the mounting surface and communicate with the mixture supply ports in the cylinder walls.

Four-cycle marine engine

Disclosed herein is a four-stroke internal combustion engine comprising a common crankcase, a crankshaft extending in the crankcase, first and second cylinders respectively extending from the common crankcase in acute angular relation to each other and respectively including first and second cylinder walls respectively including first and second exhaust gas discharge ports, a passage connecting the first and second exhaust gas discharge ports, first and second pistons respectively located in the first and second cylinders and respectively connected to the crankshaft for reciprocating movement toward and away from the crankshaft and between top dead center and bottom dead center positions, first and second cylinder heads respectively connected to the first and second cylinders, respectively partially defining first and second combustion chambers, and respectively including first and second mixture inlet passages respectively communicating with the first and second combustion chambers, first and second exhaust gas outlet passages respectively communicating with the first and second combustion chambers, and first and second rotary valves respectively located in the first and second mixture inlet passages and in the first and second exhaust gas outlet passages, first and second primary carburetors adapted to form fuel/air mixtures, and first and second mixture supply passages respectively communicating with the first and second primary carburetors and with the first and second mixture inlet passages and respectively including therein first and second reed valves.

An internal combustion engine including an engine block including a cylinder head defining a combustion chamber and having therein an opening communicating with the combustion chamber, and a combined fuel injection pump and nozzle including a housing fixed to the cylinder head and defining a high reluctance gap and a low pressure fuel chamber having an axis, a tubular member extending in the housing into the low pressure fuel chamber in coaxial relation to the axis, having therein an axial bore communicating with the low pressure fuel chamber, and at least partially defining a high pressure fuel chamber, and a nozzle assembly fixed to the housing, extending into the opening, communicating with the combustion chamber and with the axial bore, and including a valve member moveable to an open position in response to a fuel pressure in the high pressure fuel chamber above a predetermined level.

Combined fuel injection pump and nozzle

Disclosed herein is an engine assembly comprising an engine block, a crankshaft rotatably mounted in the engine block and having an end and an axis, a flywheel fixed to the end of the crankshaft and including a first flux plate including a plurality of angularly spaced pole pieces extending axially away from the end of the crankshaft, a second flux plate axially spaced from the first flux plate and including a plurality of angularly spaced pole pieces extending toward the first flux plate and being spaced from and inter-digitated between the pole pieces of the first flux plate, a core extending axially between the first and second flux plates, a coil located in surrounding relation to the core and radially inwardly of the pole pieces and between the first and second flux plates, and a stator coil stationarily mounted on the engine block in outward, radially adjacent relation to the pole pieces, and slip ring means mounted on the flywheel and on the engine block and connected to the coil for energization thereof.

Marine engine alternator construction

Disclosed herein is a marine propulsion device comprising an internal combustion engine including an engine block having therein a water jacket and having a lower face which includes therein a recess, a drive shaft housing connected to the lower face of the engine block, a propeller shaft rotatably supported by the drive shaft housing and adapted to support a propeller, a drive shaft extending through the drive shaft housing and including an upper end driven by the engine and a lower end drivingly connected to the propeller shaft, an exhaust housing located at least partially within the drive shaft housing and including an upper face mating with the lower face of the engine block and including therein a recess located in opposed relation to the recess in the lower face, a water passage defined by the recess in the lower face of the engine block and by the recess in the upper face of the exhaust housing, which water passage has an inlet end and an outlet end spaced horizontally from the inlet end and communicating with the water jacket, and a conduit connected to the inlet end for supplying water to the inlet end.

Marine propulsion device with coolant water passages

A marine propulsion device comprising an upper housing which has a lower surface and which is adapted to be mounted on the transom of a boat for pivotal movement relative thereto, a lower housing having an upper surface mating with the lower surface, a propeller shaft rotatably supported by the lower housing, and an arrangement for reducing fretting between the lower surface and the upper surface.

Outboard motor with improved housing interface

Disclosed herein is an engine comprising a closed deck cylinder block including a cylinder bore having an outer end, a counter bore at the outer end of the cylinder bore, and an outer wall including an outer cylinder head mounting surface extending from the counter bore, a coolant jacket located in spaced surrounding relation to the cylinder bore and being defined in part by the outer wall, and a passage located in the outer wall and communicating between the cylinder head mounting surface and the coolant jacket, a cylinder liner received in the cylinder bore and defining, with the counter bore, a U-shaped annular groove in the cylinder head mounting surface, a cylinder head including a cylinder block mounting surface engaged with the cylinder head mounting surface of the cylinder block, an interior coolant jacket, and a passage extending from the coolant jacket in the cylinder head to the cylinder block mounting surface of the cylinder head and communicating with the passage in the cylinder block.

Maine propulsion device with closed deck

Disclosed herein is an engine comprising a closed deck cylinder block including a cylinder bore having an outer end, a counter bore at the outer end of the cylinder bore, and an outer wall including an outer cylinder head mounting surface extending from the counter bore. In addition, the engine includes a cylinder liner received in the cylinder bore and defining, with the counter bore, an annular groove in the cylinder head mounting surface, and a cylinder head including a cylinder block mounting surface engaged with said cylinder head mounting surface of said cylinder block. Still further in addition, the engine includes a seal member located in the annular groove and engaged with the cylinder block and the cylinder head, and a plurality of fasteners extending between and tightly securing together the cylinder block and the cylinder head.

Marine propulsion device with closed deck cylinder block construction

An internal combustion engine comprising an engine block, a crankshaft rotatably supported by the block and including an axis, a first portion which is cylindrical in shape, which is concentric with the axis, and which has a uniform radius, and a second portion extending from the first portion in concentric relation thereto and having a radius less than the radius of the first portion to define a radially extending shoulder on the first portion, a flywheel including a surface engaging the shoulder, and a central aperture receiving the second portion of the crankshaft and having a radius less then the radius of the first portion, and bolts extending through the flywheel and into the first portion of the crankshaft for securing the flywheel to the crankshaft.

Marine propulsion internal combustion engine

Disclosed herein is a marine propulsion device comprising an internal combustion engine including an engine block, a drive shaft housing, a propeller shaft rotatably supported by the drive shaft housing and adapted to support a propeller, a drive shaft extending through the drive shaft housing and including an upper end driven by the engine and a lower end drivingly connected to the propeller shaft, and a resilent mount connected solely to the engine block and adapted to be supported by a kingpin.

Marine propulsion device with resilient mounting for propulsion unit

A marine propulsion device comprising a propulsion unit adapted to be mounted on the transom of a boat for pivotal movement relative thereto about a generally vertical steering axis, the propulsion unit comprising a lower unit rotatably supporting a propeller shaft adapted to support a propeller, a conduit for providing a discharge of fluid from the propulsion unit, and a nozzle for selectively varying the direction, relative to the lower unit, of the discharge.

Marine propulsion device with directable telltale discharge

An internal combustion engine comprising an engine block including an outer surface, structure including the engine block and a member connected to the surface of the engine block for defining a substantially closed chamber, a crankshaft extending from the engine block and into the chamber, a flywheel located in the chamber, connected to the crankshaft, and including thereon a starter gear, a stator located in the chamber and fixed to the engine block, a magnet or magnets located in the chamber and fixed to the flywheel for rotation therewith in a path adjacent to the stator, a finned coolant jacket located in the chamber and adapted to be connected to a source of coolant exterior to the chamber, structure on the flywheel for creating air flow in a path extending between the stator and the coolant jacket, a starter motor mounted on the block exteriorly of the chamber and including an output shaft extending into the chamber through the member, and a mechanism locatd in the chamber, drivingly connected to the output shaft, and engageable with the starter gear in response to output shaft rotation to rotate the flywheel.

Marine propulsion device internal combustion engine

An internal combustion engine comprising an engine block, a spark control member movably mounted on the engine block, means for controlling the spark timing of the engine in response to movement of the spark control member, a first actuating member movably mounted on the engine block, and means for adjustably connecting the first actuating member to the spark control member for common movement therewith.

Internal combustion engine

Disclosed herein is an engine comprising a closed deck cylinder block including a cylinder bore having an outer end, a counter bore at the outer end of the cylinder bore, and cylinder liner received in the cylinder bore and defining, with the counter bore, a U-shaped annular groove in the cylinder head mounting surface. A seal is located in the groove to provide a seal between the cylinder head and cylinder block. There is a pressure relief valve to control flow to the coolant jacket in the cylinder heat from the coolant jacket in the cylinder block. At low speeds the valve is closed so as to not overly cool the cylinder head.

Growing community of inventors

Kenosha, WI, United States of America

Paul W Breckenfeld