Overhead-valve type internal combustion engine

Details Overhead-valve type internal combustion engine Overhead-valve type internal combustion engine

1989-12-06

1990-11-13

Cross, E. Rollins

Internal-combustion engines

Lubricators

Crankcase, pressure control

123 9038, 123 9033, F01M 100

Patent

active

049694340

ABSTRACT:
In an overhead-valve type internal combustion engine, a crank chamber is connected in communication with one side portion of a valve actuating mechanism chamber through a breather passage composed of a passage inlet a passage portion, an outlet chamber and a passage outlet communicated to one another in order. The outlet chamber is formed in the space outside the one side portion of the valve actuating mechanism chamber so as to extend long in the direction of side-by-side arrangement of valve stems. The passage outlet is opened long in the direction of side-by-side arrangement of the valve stems in such a manner as to face the valve stems. A portion, on the side of the passage outlet, of the ceiling surface of the valve actuating mechanism chamber is formed as an inclined surface which increases its height dimension as it gets nearer to the side of rocker arms from the side of the passage outlet.

REFERENCES:
patent: 4343270 (1982-08-01), Kawabe
patent: 4563986 (1986-01-01), Nakano
patent: 4729349 (1988-03-01), Sonoda et al.
patent: 4771745 (1988-09-01), Nakamura et al.
patent: 4790273 (1988-12-01), Oguri et al.
patent: 4911120 (1990-03-01), Sumi

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