Device for the separation of oil droplets and/or oil mist

Patent metadata

Field	Value
Publication number	US-10364714-B2
Application number	US-201515329302-A
Country	US
Kind code	B2
Filing date	Jul 29, 2015
Priority date	Jul 29, 2014
Publication date	Jul 30, 2019
Grant date	Jul 30, 2019

Abstract

A device for the separation of oil droplets and/or oil mist from blow-by gases of an internal combustion engine with a valve for the control of the gas stream through the air-oil separator. The valve has a valve body with at least two or several gas passage openings as well as a valve closure for the closure of gas passage openings of the valve body.

First claim

The invention claimed is:

1. A device for the separation of oil droplets and/or oil mist from blow-by gases of a combustion engine with a valve for the control of a gas flow from a pressure side to a suction side of the air-oil separator, where the valve comprises a valve body with at least two or more gas passage openings from the pressure side to the suction side of the valve as well as at least one valve closure for the suction-sided closure of gas passage openings of the valve body,
wherein the at least one valve closure comprises resilient two tongues, wherein said tongues are realized in such a way that at least one of the gas passage openings cannot be closed by the resilient tongues, wherein said two tongues either face one another across a longitudinal axis located between two of said gas passage openings of said valve body or extend away from one another from said axis.

2. The device according to claim 1 , wherein said resilient tongues relative to the flow direction of the gas flow axial-concentrically, or axial-eccentrically behind at least one of the gas passage openings, comprises at least one passage opening.

3. The device according to claim 2 , wherein the diameter of the at least one of the passage openings is smaller than a diameter of the suction-sided outlet of the gas passage opening arranged axially ahead of the passage opening.

4. The device according to claim 3 , wherein at least one of the resilient tongues do not extend over at least one of the gas passage openings.

5. The device according to claim 1 , wherein more than two resilient tongues are provided.

6. The device according to claim 5 , wherein said resilient tongues have a common mounting area for the mounting of the resilient tongues at the valve body.

7. The device according to claim 6 , wherein at least one of the resilient tongues is mounted to the valve body via at least one fastening arm in such a resilient manner that it is moveable between a first position, in which it closes the gas passage openings covered and a second position in which it releases the gas passage openings covered.

8. The device according to claim 7 , wherein at least one of the fastening arms is mounted in such a way that at least one of the resilient tongues mounted via the fasting arm is moveable in such a manner that it moves away from and/or closes the at least two gas passage openings in a successive manner.

9. The device according to claim 7 , wherein at least one of the fastening arms is mounted in such a way that at least one of the resilient tongues moves away from and/or moves towards the at least two gas passage openings in a tilting movement.

10. The device according to claim 1 , wherein at least one of the resilient tongues is pre-tensioned in such a way that it closes the covered gas passage openings when the pressure difference between a side of the resilient tongue pointing towards the gas passage openings and a side of the resilient tongue pointing away from the gas passage openings is below a predefined threshold value.

11. The device according to claim 1 , wherein the valve body comprises at least two groups of gas passage openings, which each comprise at least two gas passage openings, and wherein the valve closure comprises a number of resilient tongues that corresponds to the number of groups of gas passage openings, where each of the resilient tongues is arranged in such a way that gas passage openings of one group can at least in part be closed by one of the resilient tongues.

12. The device according to claim 11 , wherein two fastening arms are provided for each of the resilient tongues, which extend along two opposite edges of the resilient tongues and which enclose one of the resilient tongues between them in the plane of the resilient tongues, where the fastening arms are mounted at one of their ends at the valve body and at their other end are connected to the resilient tongue.

13. The device according to claim 11 , wherein the fastening arms relative to the radial direction behind the last gas passage opening which can be closed by one of the resilient tongues are connected with the respective resilient tongue.

14. The device according to claim 11 , wherein at least two gas passage openings covered by two different resilient tongues have different cross-sections of their inlets and/or their outlets and/or centrally between their inlets and their outlets.

15. The device according to claim 11 , wherein at least two adjacent gas passage openings along their axial extension are connected to each other at least in sections.

16. The device according to claim 11 , wherein the gas passage openings in a radial direction are each delimited by a wall and that at least one of the gas passage openings along its axial extension at least in sections comprises a slit in the wall, where the slit does not open up to one of the other gas passage openings.

17. The device according to claim 11 , wherein the valve body comprises a base plate in which the gas passage openings are arranged, where the gas passage openings in a radial direction are delimited by a wall and where the wall of at least one of the gas passage openings protrudes beyond the base plate in the direction of at least one of the resilient tongues.

18. The device according to claim 17 , wherein at least one of the resilient tongues at least one of its edges comprises a collar which is bent in the direction of the gas passage openings and which surrounds the gas passage openings laterally.

19. The device according to claim 11 , wherein in at least one of the resilient tongues on at least one of the passage openings, a protrusion is arranged which surrounds the outer edge of the passage opening, which protrudes from the plane of the respective at least one resilient tongue facing away from the gas passage openings.

20. The device according to claim 11 , wherein in at least one of the resilient tongues at least one of the passage openings a protrusion is arranged which surrounds the outer edge of the passage opening in sections, which protrudes from the plane of the respective at least one resilient tongue facing away from the gas passage openings, where the protrusion surrounding sectionally on its side pointing away from the respective at least one resilient tongue protrudes into a streaming area, which corresponds to an axial prolongation of at least one of the gas passage openings.

21. The device according to claim 11 , wherein in at least one of the gas passage openings a guiding geometry is arranged, which provides the gases passing with a rotation about the axial direction of the gas passage opening.

22. The device according to claim 1 , wherein at least one of the resilient tongues is comprised of spring steel.

23. The device according to claim 1 , wherein the valve body is comprised of a thermoplastic.

Assignees

• Reinz Dichtungs Gmbh

Inventors

• Erdmann Christoph
• Yaman Yagiz
• Zitarosa Francesco

Classifications

• F01M13/00

  Crankcase ventilating or breathing · CPC title

• F01M2013/0044

  with one or more valves · CPC title

• B01D45/08

  by impingement against baffle separators · CPC title

• B01D45/16

  generated by the winding course of the gas stream {, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes} · CPC title

• F01M13/04 Primary

  having means for purifying air before leaving crankcase, e.g. removing oil · CPC title