Breather device for an internal combustion engine

Details Breather device for an internal combustion engine Breather device for an internal combustion engine

1988-12-20

1990-05-08

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

123 9034, F01M 910, F02M 2506

Patent

active

049228811

ABSTRACT:
A breather device adapted for an internal combustion engine which includes a lubricant separation chamber having a check valve opening by a positive pressure in the crank chamber and being provided with hole(s) communicating the lubricant separation chamber with a crank chamber, a gas exhausting section connected to an intake air line, and with a device for returning a separated lubricant to the crank chamber. The lubricant return device comprises a gap section communicating to a bottom of the lubricant separation chamber and in contact with an end face of an appropriate revolving shaft such as a cam shaft, and forced oil return passage(s) being formed in or on said revolving shaft, which communicate(s) the crank chamber to the gap section, and integrally rotate(s) with the revolving shaft to forcibly send lubricant oil deposited in the gap section to the crank chamber.

REFERENCES:
patent: 4553510 (1985-11-01), Yano et al.
patent: 4569323 (1986-02-01), Okumura
patent: 4570587 (1986-02-01), Watanabe et al.
patent: 4603673 (1986-08-01), Hiraoka et al.
patent: 4615310 (1986-10-01), Umeha et al.
patent: 4651704 (1987-03-01), Sekiguchi
patent: 4681068 (1987-07-01), Anno et al.
patent: 4777842 (1988-10-01), Yamada

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