Harley-davidson Motor Company Group, LLC

Samir Mesanovic

Alexander John Bozmoski

John W Schanz

Sean A Rusch

Scott J Nash

Brian P Dondlinger

Richard G Pierson

Peter J Duvernell

P Kirk Rasmussen

William M Kernen

Paul Nan-Jiune Liang

Gregory R Schmidt

Jesse L Dees

Brian G Thate

A primary housing for a motorcycle engine includes an inner housing that defines internal coupling apertures, transmission coupling apertures, and external coupling apertures. Internal fasteners extend through the internal coupling apertures and the transmission coupling apertures to couple the inner housing to the crankcase and the transmission. An outer housing defines coupling apertures that align with the external coupling apertures and fasteners extend through the coupling apertures, through the external coupling apertures, and into the engine crankcase to couple the inner and outer housings to the crankcase. A resonant damping device is rigidly or moveably coupled to an anti-node region of the outer housing to reduce noise emissions from the outer housing during engine operation.

Primary housing assembly for a motorcycle engine

Motorcycle rocker housing

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

Growing community of inventors

Howards Grove, WI, United States of America

Samir Mesanovic