Breather system for an internal combustion engine

Details Breather system for an internal combustion engine Breather system for an internal combustion engine

1996-01-25

1997-09-09

McMahon, Marguerite

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

F01M 1304, F01L 1053

Patent

active

056645490

ABSTRACT:
An internal combustion engine has a cylinder head assembly with a camshaft 28 mounted therein and breather passages 70 through it. A guard member 38 is mounted on the head casting 12 and includes guards 40 over the cams 42 side walls 39 and a bearing ladder for the camshaft. A gasket 46 between the guard member 38 and a cover 44 forms, with the guard member 38, a separation region 50 having an inlet 72 fed by the breather passages and outlets 51 in the form of holes through the gasket 46. The gas can flow from the breather passages to the outlets 51 is slow and substantially horizontal so oil can separate out of the gas. The guards 40 prevent oil from the cams 42 from mixing with the breather gases.

REFERENCES:
patent: 4493295 (1985-01-01), Ampferer
patent: 4597372 (1986-07-01), Furukawa
patent: 4607604 (1986-08-01), Kanoh et al.
patent: 4721090 (1988-01-01), Kato
patent: 4723529 (1988-02-01), Yokoi et al.
patent: 4862860 (1989-09-01), Shinohara
patent: 4922881 (1990-05-01), Tamba et al.
patent: 5129371 (1992-07-01), Rosalik, Jr.
Yahiro Kazuma, "Valve Chamber Structure for Internal Combustion Engine", Aug. 1, 1994, The Abstract.
Misaku Tomohiro, "Oil Separator in PCV System", Jun. 21, 1994, The Abstract.
Ota Katsuya, "Engine Oil Supply Port Structure For Internal Combustion Engine", Jan. 16, 1992, The Abstract.
Iwata Noriyuki, "Cylinder Head Structure of Engine", Apr. 6, 1993, The Abstract.

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