Engine breather device for motor vehicle with riding saddle

Details Engine breather device for motor vehicle with riding saddle Engine breather device for motor vehicle with riding saddle

1985-12-17

1986-12-30

Cox, Ronald B.

Internal-combustion engines

Crankcase ventilation

180311, F01M 1300

Patent

active

046320717

ABSTRACT:
An engine breather device in a motor vehicle having a vehicle frame including longitudinal upper and lower frames, front and rear wheels rotatably supported on the vehicle frame, a handlebar mounted on the vehicle frame for steering the front wheels, a rider's saddle disposed on an upper portion of the vehicle frame, footsteps disposed on a lower portion of the vehicle frame. The engine breather device comprises a substantially vertical pipe frame adapted to interconnect the upper and lower frames and having at least one opening, an engine adapted to be mounted on the vehicle frame and having a crankcase and a cylinder projecting upwardly from the crankcase, the cylinder having a hole extending from the upper end thereof into the crankcase, and a breather tube providing communication between the interior of the vertical pipe frame and the interior of the crankcase through the hole in the cylinder, the breather tube being connected to the engine at a first position above the upper end of the cylinder and to the vertical pipe frame at a second position lower than the first position. Since the engine breather tube employs the existing vertical pipe frame, it is made up of a reduced number of parts and simple in construction. The breather tube prevents water from entering the engine therethrough even when the engine is substantially fully immersed in a deep puddle.

REFERENCES:
patent: 3945463 (1976-03-01), Okano
patent: 4535869 (1945-08-01), Tsutsumikoshi

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