Closed loop breather system for engine crankcase

Details Closed loop breather system for engine crankcase Closed loop breather system for engine crankcase

1992-02-14

1992-08-25

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

123573, F02M 2506

Patent

active

051409682

ABSTRACT:
A closed loop engine crankcase breather system is provided with a breather tube engaged between a rocker arm housing of the engine and an intake air tube of the engine downstream of the air cleaner therefor. The end of the breather tube within the intake air tube is curved so that the opening thereof faces directly into the stream of air flowing through the intake air tube to thereby reduce the vacuum within the crankcase by the velocity head of the intake air stream and thus maintain a smaller pressure differential between the interior cavity of the engine and the atmosphere.

REFERENCES:
patent: 1411343 (1922-04-01), Gore
patent: 3116727 (1964-01-01), Dietrich
patent: 3545416 (1970-12-01), Von Brimer
patent: 4279236 (1981-07-01), Dallman
patent: 4753214 (1988-06-01), Langlois et al.
patent: 4862860 (1989-09-01), Shinohara
patent: 4962745 (1990-10-01), Ohno et al.
patent: 5080082 (1992-01-01), Mueller et al.

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