Method and apparatus for controlling a phase varying apparatus
US-2015377084-A1 · Dec 31, 2015 · US
Control valve for a camshaft adjuster
US9458942B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9458942-B2 |
| Application number | US-201314402561-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 8, 2013 |
| Priority date | May 25, 2012 |
| Publication date | Oct 4, 2016 |
| Grant date | Oct 4, 2016 |
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- Title
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Abstract
Official abstract text for this publication.
A control valve ( 4 ) for controlling pressure medium flows of a camshaft adjuster, which control valve includes a substantially hollow cylindrical control sleeve ( 6 ), which is disposed inside a casing ( 8 ), and a control piston ( 12 ) which is guided axially displaceably inside the control sleeve ( 6 ) against the spring force of a spring element ( 14 ), the control sleeve ( 6 ) having at one axial end a base ( 22 ) which serves as an axial contact surface for the spring element ( 14 ).
First claim
Opening claim text (preview).
The invention claimed is: 1. A control valve for controlling flows of pressurized medium of a camshaft adjuster, said control valve comprises an essentially hollow cylindrical control sleeve arranged inside a casing and a guided control piston that is movable in an axial direction inside the control sleeve against a spring force of a spring element, the control sleeve has, on an axial end, a base that is an axial contact surface for the spring element, the base comprises a recess through which a projection of the casing passes in the axial direction in a positive locking connection, and the projection extends through the base of the control sleeve. 2. The control valve according to claim 1 , wherein the recess is formed with a multiple-fold, cyclic rotational symmetry.
Assignees
Inventors
Classifications
Supply and exhaust · CPC title
With annular passage [e.g., spool] · CPC title
Solenoid driven oil control valves · CPC title
- F01L1/344Primary
changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear · CPC title
characterised by the provision of valves with reciprocating and other movements (surrounding working cylinder or piston F01L5/06) · CPC title
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- What does patent US9458942B2 cover?
- A control valve ( 4 ) for controlling pressure medium flows of a camshaft adjuster, which control valve includes a substantially hollow cylindrical control sleeve ( 6 ), which is disposed inside a casing ( 8 ), and a control piston ( 12 ) which is guided axially displaceably inside the control sleeve ( 6 ) against the spring force of a spring element ( 14 ), the control sleeve ( 6 ) having at o…
- Who is the assignee on this patent?
- Schaeffler Technologies Gmbh & Co Kg, Schaeffler Technologies Ag
- What technology area does this patent fall under?
- Primary CPC classification F01L1/344. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Oct 04 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).