Valve timing adjustment system and electronic control device
US-2024167399-A1 · May 23, 2024 · US
Camshaft adjuster for an internal combustion engine
US8955477B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8955477-B2 |
| Application number | US-201113294268-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 11, 2011 |
| Priority date | Nov 11, 2010 |
| Publication date | Feb 17, 2015 |
| Grant date | Feb 17, 2015 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A camshaft adjuster which has a control valve and at least one pressure-controlled positioning valve which is connected to a pair of control chambers. The control chambers each have an early chamber and a late chamber and one of the control chambers is designed in such a manner that, in an unenergized basic position of the control valve, in order to set a middle position, the smaller of the early and late chambers of the one of the control chambers is connected to a supply line and the larger of the early and late chambers of the one of the control chambers is connected to a removal line.
First claim
Opening claim text (preview).
The invention claimed is: 1. A camshaft adjuster for an internal combustion engine having a crankshaft and a camshaft, the camshaft adjuster comprising: a stator, which can be driven by the crankshaft and which is located radially externally; a rotor, which can be connected to the camshaft for conjoint rotation and which is located radially internally; pairs of chambers arranged between the rotor and the stator, each of the pairs of chambers comprising two opposing chambers, n…
Assignees
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Classifications
- F01L1/3442Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US8955477B2 cover?
- A camshaft adjuster which has a control valve and at least one pressure-controlled positioning valve which is connected to a pair of control chambers. The control chambers each have an early chamber and a late chamber and one of the control chambers is designed in such a manner that, in an unenergized basic position of the control valve, in order to set a middle position, the smaller of the ear…
- Who is the assignee on this patent?
- Busse Michael, Schaeffler Technologies Gmbh
- What technology area does this patent fall under?
- Primary CPC classification F01L1/3442. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Feb 17 2015 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).