US 6,854,454 B2Granted

Oil separating mechanism and oil separating unit

AssigneesNifco Inc., Mazda Motor Corporation

InventorsNoboru Obayashi, Tomohide Okuta, Nobuhiro Takamatsu, Fusatoshi Tanaka, Megumu Fukushima, Katsunori Kuremiya, Akinori Gondai

Life of this patent

Estimating the term…

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Abstract

An oil separating mechanism to be attached to a cylinder block having a concave portion includes a cover member for forming a closed space; a partition wall for dividing the closed space into an inner chamber and an outer chamber; a dividing wall for dividing the inner chamber into a first inner chamber and a second inner chamber; a gas inlet for introducing gas into the first inner chamber; a gas outlet for discharging the gas; a first gas port for communicating the first inner chamber with the outer chamber; and a second gas port for communicating the outer chamber with the second inner chamber. The gas introduced into the first inner chamber flows from the first inner chamber to the outer chamber. Then, the gas flowing from the outer chamber to the second inner chamber is discharged through the gas outlet.

Claims18

Dependent claims

An oil separating mechanism formed at a concave portion, comprising:

a cover member to be attached to the concave portion for forming a closed space,
a partition wall disposed inside the closed space for dividing the closed space into an inner chamber between the partition wall and the concave portion, and an outer chamber between the partition wall and the cover member,
a dividing wall extending from the partition wall toward the concave portion for dividing the inner chamber into a first inner chamber and a second inner chamber,
a first gas port provided in the partition wall for communicating the first inner chamber with the outer chamber, and
a second gas port provided in the partition wall for communicating the outer chamber with the second inner chamber so that gas introduced into the first inner chamber flows to the second inner chamber through the first gas port, the outer chamber and second gas port to remove oil contained in the gas.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/752,496Filed 8 Jan 2004
Priority: JP 2003-03805917 Feb 2003
Published: US 2004/0159313 A119 Aug 2004
Granted: 15 Feb 2005
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

F01M 13/04
Crankcase ventilating or breathing: having means for purifying air before leaving crankcase, e.g. removing oil
F01M 2013/0433
Having means for purifying air before leaving crankcase, e.g. removing oil: with a deflection device, e.g. screen
F01M 2013/0461
Having means for purifying air before leaving crankcase, e.g. removing oil: with a labyrinth
F01M
Lubricating of machines or engines in general