Internal combustion engine for vehicles in particular, for motor

Details Internal combustion engine for vehicles in particular, for motor Internal combustion engine for vehicles in particular, for motor

1984-06-11

1985-08-06

Cross, E. Rollins

Internal-combustion engines

Lubricators

Crankcase, pressure control

123198E, 184 65, 184106, F01M 100

Patent

active

045328978

ABSTRACT:
The crankshaft of an internal combustion engine for vehicles, especially motorcycles, is mounted between upper and lower parts of a crankcase. The crank webs of the shaft rotate partially in the lower part which is in the form of an oil space. An oil sump is also provided in the lower part at a lower level than the oil space. The lower part of the crankcase has a curved floor formed at a distance from the crank webs, and such floor has one or more oil return ducts therein. The ducts are disposed in the vicinity of the path of movement of the crank webs. The ducts are, in fact, opposite the crank webs and each of the ducts have a slope to them. Each of the ducts extend between walls of bearing seats provided in the engine.

REFERENCES:
patent: 2618351 (1952-11-01), Giacosa
patent: 3106263 (1963-10-01), McKellar
patent: 3688871 (1972-09-01), Krestan et al.
patent: 4457274 (1984-07-01), Gottlob
"Das Kraftrad" 1957, N. R. 4.S.K. 80.

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