OIL SEPARATOR UNIT

• US 20200063618A1
• Filed: 08/09/2019
• Published: 02/27/2020
• Est. Priority Date: 08/24/2018
• Status: Active Grant

• Current Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Original Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Inventors: Tada, Kazushi
• Granted Patent: US 10,837,332 B2
• Time in Patent Office: Days
• CPC Class Codes: B01D 45/08 by impingement against baffle separators
• CPC Class Codes: B01D 46/10 Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
• CPC Class Codes: B01D 46/80 Chemical processes for the removal of the retained particles, e.g. by burning
• CPC Class Codes: B01D 50/20 Combinations of devices covered by groups B01D45/00 and B01D46/00
• CPC Class Codes: F01M 13/04 having means for purifying air before leaving crankcase, e.g. removing oil
• CPC Class Codes: F01M 13/0416 arranged in valve-covers
• CPC Class Codes: F01M 2011/035 comprising oil pumps
• CPC Class Codes: F01M 2013/0433 with a deflection device, e.g. screen
• CPC Class Codes: F01M 2013/0438 with a filter

Abstract

An oil separator unit including an upstream member having an opening through which the blowby gas passes, a downstream member having a hit portion hit by the blowby gas, and a porous member trapping the oil mist contained in the blowby gas that has passed through the through hole. The upstream member includes and a spacer projected from an upstream surface facing a first surface of the porous member to support the first surface, the downstream member includes a rib projected from a downstream surface facing a second surface of the porous member to support the second surface, and the spacer is extended along a first direction and the rib is extended along a second direction substantially perpendicular to the first direction.

Claims

1. An oil separator unit configured to separate an oil mist contained in a blowby gas generated in an internal combustion engine, comprising:

an upstream member disposed on an upstream side in a flow direction of the blowby gas and having an opening through which the blowby gas passes;

a downstream member disposed on a downstream side in the flow direction of the blowby gas and having a hit portion hit by the blowby gas; and

a porous member including a first surface facing the upstream member and a second surface facing the downstream member and formed in a substantially rectangular shape with a predetermined thickness so as to trap the oil mist contained in the blowby gas that has passed through the through hole, wherein

the upstream member includes a upstream surface facing the first surface and a spacer projected from the upstream surface to support the first surface,

the downstream member includes a downstream surface facing the second surface and a rib projected from the downstream surface to support the second surface, and

the spacer is extended along a first direction and the rib is extended along a second direction substantially perpendicular to the first direction.

2. The oil separator unit according to claim 1, wherein

the rib has a substantially rectangular cross-sectional shape, and

the second direction corresponds to a gravity direction.

3. The oil separator unit according to claim 1, wherein

the upstream member includes a plurality of the spacers extended along the first direction in parallel with each other and formed in substantially plate shapes, and

the downstream member includes a plurality of the ribs extended along the second direction in parallel with each other.

4. The oil separator unit according to claim 3, wherein

the opening is configured to elongate along the second direction,

the plurality of the spacers include first side spacers and second side spacers, disposed apart from each other at both sides of the opening in the first direction, and

the plurality of the ribs include a first rib, a second rib and a third rib provided to correspond to respective positions of the first side spacers, the opening and the second side spacers.

5. The ol separator unit according to claim 1, wherein

the upstream member includes a recess at an outside of the spacer in a width direction of the upstream member on the upstream surface, and

the downstream member includes

a flange fitted in the recess, and

a connecting part extending along the flow direction of the blowby gas that has passed through the opening and having a first end connected to the flange and a second end connected to the downstream surface.

6. The oil separator unit according to claim 1, wherein

the upstream member includes a thick portion in a periphery of the opening so as to increase a thickness of the opening along the flow direction of the blowby gas.

7. The oil separator unit according to claim 1, wherein

the spacer includes a support surface configured to support the first surface of the porous member and a projecting portion projected from the support surface of the spacer, and

the rib includes a support surface configured to support the second surface of the porous member and a projecting portion projected from the support surface of the rib.

8. The oil separator unit according to claim 7, wherein

the projecting portion of the spacer and the projecting portion of the rib are formed so that a position of the projecting portion of the spacer and a position of the projecting portion of the rib match with each other in the first direction and in the second direction.