Internal-combustion engines – Charge forming device – Crankcase vapor used with combustible mixture
Reexamination Certificate
2006-06-29
2008-10-14
McMahon, M. (Department: 3747)
Internal-combustion engines
Charge forming device
Crankcase vapor used with combustible mixture
Reexamination Certificate
active
07434571
ABSTRACT:
A closed crankcase ventilation system for an internal combustion engine is disclosed. The system comprises a flow path configured to enable crankcase emissions to flow from a crankcase of an internal combustion engine. A compressor is configured to enhance the flow of crankcase emissions from the crankcase by drawing the crankcase emissions into the compressor, to draw air from a source, and to compress the air and crankcase emissions. A treatment element is provided downstream of the compressor and configured to treat the compressed air and crankcase emissions exiting the compressor to remove entrained oil. A first conduit downstream of the treatment element is configured to introduce a first portion of the compressed air and crankcase emissions into one of an exhaust system for the engine and an air intake system for the engine. A second conduit downstream of the treatment element is configured to introduce a second portion of the air and crankcase emissions into a system having at least one component utilizing compressed air for its operation.
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Moncelle (deceased) et al., U.S. Appl. No. 11/476,731, filed Jun. 29, 2006, entitled “Closed Crankcase Ventilation System.”
Cazzato Anthony
Fornof William P.
Moncelle, legal representative Patricia
Reisinger Paul G.
Young D. Craig
Bendix Commercial Vehicle Systems LLC
Caterpillar Inc.
Finnegan Henderson Farabow Garrett & Dunner
McMahon M.
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