Blowby pressure control above an oil control ring in a reciproca

Details Blowby pressure control above an oil control ring in a reciproca Blowby pressure control above an oil control ring in a reciproca

1997-03-14

1998-04-14

Denion, Thomas E.

Expansible chamber devices

With lubricating means

Piston has lubricant retaining or conducting means

92153, 1231936, 277 71, F01B 3110

Patent

active

057379998

ABSTRACT:
A plurality of passageways were provided between the inter-ring cylindrical surface of a piston and a cavity formed behind an oil control ring mounted on the piston. The passageway provides for the passage of blowby gas during downward movement of the piston, thereby permitting the oil control ring to seat against the upper surface of its groove. The present invention effectively controls the flow of oil toward the compression ring of the ring assembly without the requirement for a passageway communicating the inter-ring cavity with a saturated, turbulent flow, oil environment.

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