Oil separating device

Patent metadata

Field	Value
Publication number	US-10946320-B2
Application number	US-201716321365-A
Country	US
Kind code	B2
Filing date	Aug 10, 2017
Priority date	Aug 17, 2016
Publication date	Mar 16, 2021
Grant date	Mar 16, 2021

Abstract

An oil separating device for separating an oil mist from a blow-by gas is arranged on a flow passage of the blow-by gas. The oil separating device includes an oil separator having an inlet formed at one end thereof and an outlet formed at another end thereof opposite to the one end; a collision wall arranged at a downstream side of the oil separator, and including an uneven portion formed on a surface thereof to face the outlet of the oil separator; and a filter arranged between the oil separator and collision wall. The oil separator is formed such that the oil mist in the blow-by gas coalesces together to form a coalesced oil mist, the filter removes the coalesced oil mist from the blow-by gas, and the collision wall separates a remained oil mist remained in the blow-by gas through the filter.

First claim

The invention claimed is:

1. An oil separating device for separating an oil mist from a blow-by gas, arranged on a flow passage of the blow-by gas, comprising:
an oil separator including an inlet formed at one end thereof and an outlet formed at another end thereof opposite to the one end;
a collision wall arranged at a downstream side of the oil separator, and including an uneven wall formed on a surface thereof to face the outlet of the oil separator; and
a filter arranged between the oil separator and collision wall,
wherein the oil separator includes a curved wall along which the blow-by gas spirals to coalesce together such that the oil mist in the blow-by gas forms a coalesced oil mist, the filter removes the coalesced oil mist from the blow-by gas, and the collision wall separates a remained oil mist remained in the blow-by gas passing through the filter,
the collision wall further comprises a side wall having a width larger than that of the filter and a height higher than that of the uneven wall in a direction toward the filter and enclosing the uneven wall,
the filter is arranged apart from the uneven wall to form a space between the uneven wall, the filter, and the side wall, and fit inside the side wall, and
the filter has a width larger than the outlet of the separator.

2. An oil separating device according to claim 1 , wherein the uneven wall includes concave and convex portions arranged alternately to increase a surface area collided with the blow-by gas, and each of the concave and convex portions vertically continuously extends in a direction perpendicular to a flow direction of the blow-by gas.

Assignees

• Nifco Inc

Inventors

• Garrett Stephen
• INGLIS Alex

Classifications

• B01D50/20

  Combinations of devices covered by groups B01D45/00 and B01D46/00 · CPC title

• F01M13/0405

  arranged in covering members apertures, e.g. caps · CPC title

• F01M2013/0438

  with a filter · CPC title

• F01M2013/0461

  with a labyrinth · CPC title

• F01M2013/0427

  the centrifuge device having no rotating part, e.g. cyclone · CPC title