Variable valve train
US-2017284240-A1 · Oct 5, 2017 · US
Valve train device
US11047269B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11047269-B2 |
| Application number | US-201716469513-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 20, 2017 |
| Priority date | Dec 14, 2016 |
| Publication date | Jun 29, 2021 |
| Grant date | Jun 29, 2021 |
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- Title
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- Abstract
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- Assignees and inventors
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- Key dates
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- First independent claim
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- CPC / IPC classifications
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- Citations and related patents
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Abstract
Official abstract text for this publication.
A valve train device, in particular for an internal combustion engine, includes a support element secured to a housing, at least one axially moveable cam unit associated with a valve, and at least one switch unit for axially moving at least one part of the cam unit having at least one displacement body which is provided to be introduced for axial movement at least functionally between the support element and the cam unit. The cam unit has at least three cam paths.
First claim
Opening claim text (preview).
The invention claimed is: 1. A valve train device, comprising: a support element secured to a housing; an axially shiftable cam unit that is associated with a valve; a switch unit for axially shifting the cam unit, wherein the switch unit has a first displacement body and a second displacement body; wherein the cam unit has a first cam track, a second cam track, and a third cam track; wherein the first cam track and the second cam track are engageable with the valve when the switch unit is in a first switch position; wherein the first displacement body and the second displacement body are separable from the cam unit at a same time in a switch preparation for activating and/or deactivating the third cam track; and a shifting element, wherein the switch unit is axially adjustable with respect to the support element by the shifting element into a second switch position in which the third cam track is engageable with the valve. 2. The valve train device according to claim 1 , wherein the shifting element is disposed inside the switch unit. 3. The valve train device according to claim 2 , wherein the shifting element axially shifts the first displacement body and the second displacement body inside the switch unit. 4. The valve train device according to claim 1 , wherein the shifting element is disposed outside the switch unit.
Assignees
Inventors
Classifications
Camshafts · CPC title
Composite camshafts, e.g. with cams or cam sleeve being able to move relative to the inner camshaft or a cam adjusting rod · CPC title
by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot · CPC title
with cams provided on an axially slidable sleeve · CPC title
- F01L13/0036Primary
the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction · CPC title
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Frequently asked questions
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- What does patent US11047269B2 cover?
- A valve train device, in particular for an internal combustion engine, includes a support element secured to a housing, at least one axially moveable cam unit associated with a valve, and at least one switch unit for axially moving at least one part of the cam unit having at least one displacement body which is provided to be introduced for axial movement at least functionally between the suppo…
- Who is the assignee on this patent?
- Daimler Ag
- What technology area does this patent fall under?
- Primary CPC classification F01L13/0036. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jun 29 2021 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).