Oil-separating device, in particular for a crankcase ventilation system of an internal combustion engine

Patent metadata

Field	Value
Publication number	US-2016138445-A1
Application number	US-201414898045-A
Country	US
Kind code	A1
Filing date	Jun 16, 2014
Priority date	Jun 18, 2013
Publication date	May 19, 2016
Grant date	—

Abstract

An oil-separating device for crankcase ventilation of an internal combustion engine may include a hollow member that extends axially in a longitudinal axis and through which a gas flow charged with oil can flow. The gas flow may flow against an oil separation ring disposed within or formed in the hollow member. The hollow member may contain a substantially rotationally symmetrical flow guiding member that has a flow projection located in the longitudinal axis and that has a flow contour that radially increases in a downstream direction so that gas can flow around the flow guiding member and so that the gas flow between the flow contour and the inner side of the hollow member can strike the oil separation ring in an accelerated manner.

First claim

1 .- 12 . (canceled)

13 . An oil-separating device for crankcase ventilation of an internal combustion engine, the oil-separating device comprising:
a hollow member that extends axially in a longitudinal axis and includes an oil separation ring, the hollow member for receiving a gas flow charged with oil that flows against the oil separation ring and through the hollow member in a downstream direction; and a flow guiding member that is substantially rotationally-symmetrical and is arranged in the hollow member, the flow guiding member having a flow projection oriented in the longitudinal axis and a flow contour that expands radially outward in the downstream direction such that the gas flow accelerates due to flow constriction as the gas flow passes around the flow guiding member and approaches the oil separation ring.

14 . The oil-separating device of claim 13 wherein the flow contour of the flow guiding member is convex.

15 . The oil-separating device of claim 13 further comprising a peripheral flow cross-section region having a radial flow cross-section width disposed between a radially outer region of the flow guiding member and an inner side of the hollow member, wherein the oil separation ring has a radial width that corresponds at least to the radial flow cross-section width in the peripheral flow cross-section region.

16 . The oil-separating device of claim 13 wherein the oil separation ring is formed at least partially form a nonwoven material.

17 . The oil-separating device of claim 16 wherein the oil separation ring includes a carrier ring in which the nonwoven material is at least partially received.

18 . The oil-separating device of claim 16 wherein the oil separation ring and the nonwoven material are positioned in an accelerated portion of the gas flow such that at least one of the oil separation ring or the nonwoven material serves as an impactor that the gas flow strikes so as to separate oil.

19 . The oil-separating device of claim 16 wherein a level of gas-permeability of the nonwoven material permits the gas flow to partially flow through the nonwoven material.

20 . The oil-separating device of claim 13 wherein an outer periphery of the oil separation ring is positioned adjacent to an inner side of the hollow member such that at least a portion of the gas flow is redirected radially inward by the oil separation ring.

21 . The oil-separating device of claim 13 further comprising an oil separation member that is positioned in the hollow member downstream of the oil separation ring.

22 . The oil-separating device of claim 21 wherein the oil separation member is tubular and is disposed within the hollow member.

23 . The oil-separating device of claim 22 further comprising a redirection member positioned downstream of the flow guiding member, the redirection member for redirecting the gas flow against an inner side of the oil separation member.

24 . The oil-separating device of claim 23 further comprising an intermediate element disposed between the oil separation ring and the redirection member, wherein the intermediate element includes radial gaps through which the gas flow strikes the inner side of the oil separation member in an accelerated manner.

Assignees

• Thyssenkrupp Presta Tecct Ag

Inventors

• Reichelt Robert
• Müller Ulf
• Meusel Jürgen
• Jokisch Ingo

Classifications

• F01M2013/0438

  with a filter · CPC title

• F01M2013/0422

  Separating oil and gas with a centrifuge device · CPC title

• F01L2001/0475

  Hollow camshafts · CPC title

• F01L1/047

  Camshafts · CPC title

• B04C3/06

  Construction of inlets or outlets to the vortex chamber · CPC title