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US 4,401,093 AGranted
Oil fill/air breather cap with integral oil separator
AssigneeFord Motor Company
InventorsFreeman C. Gates, Jr., Egils A. Purins
Life of this patent
Estimating the term…
Abstract
A one-piece combination oil fill/air breather cap for an automotive type engine positive crankcase ventilation (PCV) system that includes a filter and oil separator chambers below the filter defined by partitions or baffles upon which the oil droplets impinge during reverse flow operation of the PCV system; a double lip flared annular seal operating in tension being sandwiched between the cap lower surface and the engine rocker arm cover to minimize oil leakage.
Claims5
An oil fill/air breather cap for use with an automotive type internal combustion engine having an air cleaner comprising:
- a hollow one-piece closed housing adapted to be inserted into an opening of an engine through which oil and air may be added and through which oil laden crankcase vapors from the engine may flow in a reverse direction out of the engine toward the air cleaner, the housing containing an oil filter and oil separator means on the engine side of the filter in axial alignment therewith, the oil separator means having baffle means inhibiting the flow of oil droplets from the crankcase to the filter, and tube means connecting the housing on the air cleaner side of the filter to the air cleaner for the normal flow of clean air from the air cleaner through the filter and oil separator to the crankcase.
Dependencies are inferred from the claim text.