Closed crankcase ventilation system

Details Closed crankcase ventilation system Closed crankcase ventilation system

2011-05-24

2011-05-24

McMahon, M. (Department: 3783)

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

Reexamination Certificate

active

07946278

ABSTRACT:
A closed crankcase ventilation system in which blow-by gas is introduced into an oil separator through a blow-by gas blowout opening provided in a truss structure of a cylinder block. A diaphragm is established in the truss structure of the cylinder block to close a portion of an oil hole portion returned from a cylinder head on the top thereof, thus preventing oil from flowing backward. An oil drain portion returns oil separated in the oil separator to an oil pan, and a gas recycling portion supplies blow-by gas separated in the oil separator to an intake manifold.

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