Harley-davidson Motor Company Group, LLC

Harley-davidson Motor Company

Jesse L Dees

Brian E Healy

Michael S Carlin

Terry J Rumpel

Scott A Koerner

Matt G Hoffmann

Rick W Elchert

Stephann E Balthazar

Scott B Cain

Nicolae Glaja

Dan M Sepic

Gregory R Schmidt

Ronald G Hurth

Jeremy Michael Lenzendorf

Douglas D Clarkson

Paul J Troxler

Samir Mesanovic

Brian G Thate

Francis Giunta

Charles J Lamb

A cylinder head for a motorcycle engine in which the cylinder head includes an intake side including an intake passage and an intake valve movably disposed within the intake passage, and an exhaust side including an exhaust passage and an exhaust valve movably disposed within the exhaust passage, the exhaust side being positioned remote from the intake side. A cooling liquid inlet port and a cooling liquid discharge port are located on the intake side. A cooling liquid passage runs through the cylinder head to reduce an operating temperature of the cylinder head.

Cylinder head cooling system

A cylinder head for a motorcycle engine, which has a pair of cylinders arranged in a 'V' configuration such that the cylinders converge toward a crankshaft axis and such that a space is defined between the cylinders at an upper extent of each of the cylinders. The cylinder head includes a base configured to be coupled to one of the cylinders, an intake side including an intake passage and an intake valve movable disposed within the intake passage, the intake side being positioned adjacent the space, and an exhaust side including an exhaust passage and an exhaust valve movable disposed within the exhaust passage, the exhaust side being positioned remote from the space. A cooling liquid inlet port and a cooling liquid discharge port are located on the intake side. A cooling liquid passage runs through the cylinder head to reduce an operating temperature of the cylinder head.

Oil tank for a motorcycle

An oil pump for an engine having a first cam shaft and a second cam shaft. The oil pump includes a housing and a first pump assembly at least partially disposed within the housing. The first pump assembly includes a rotating element that is adapted to be directly driven by the first cam shaft. A second pump assembly is at least partially disposed within the housing. The second pump assembly includes a rotating element that is adapted to be directly driven by the second cam shaft.

Oil pump for a motorcycle

A breather assembly for a motorcycle engine includes first and second substantially identical rocker supports that are each coupled to a respective cylinder head. Rocker covers are coupled to the rocker supports and cooperate therewith to define respective rocker chambers. Each rocker support defines a first breather passage and a second breather passage. A first breather assembly is coupled to the first breather passage of the first rocker support, and second breather assembly is coupled to the second breather passage of the second rocker support. A gasket member positioned between the rocker supports and the cylinder heads obstructs the unused breather passages of each rocker support. A sealing member is also provided that seals the interface between the rocker support and the rocker cover, and that also seals the interface between the breather assembly and the associated breather passage.

Breather assembly for an internal combustion engine

An oil pump for a vehicle engine. The oil pump includes an oil pump housing and a gerotor. The oil pump housing includes a cavity that defines an inside diameter. The gerotor is positioned within the cavity, is rotatable relative to the housing, and defines a thickness and an outside diameter. The distance between the inside diameter and the outside diameter is non-uniform across the thickness.

Reduced friction gerotor

A motorcycle engine includes a crankcase, a cam chest, and a separating wall between the crankcase and cam chest. An opening is defined in the wall and communicates between the cam chest and crankcase. A valve assembly, which is preferably a reed valve assembly, covers the opening and permits one-way flow of air from the crankcase into the cam chest in response to pressure differentials caused by reciprocation of the engine's pistons. The air is then forced into the engine's rocker boxes through the engine's pushrod tubes and forces oil in the rocker boxes to return to the crankcase through narrow oil drainback passages.

Motorcycle engine cam chest having reed valve assembly

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Slinger, WI, United States of America

Jesse L Dees