Sliding cam module with a bearing element and a camshaft with a sliding cam module, as well as a cover module
US-2019112950-A1 · Apr 18, 2019 · US
Variable valve device for engine
US10458294B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10458294-B2 |
| Application number | US-201816001802-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 6, 2018 |
| Priority date | Dec 12, 2017 |
| Publication date | Oct 29, 2019 |
| Grant date | Oct 29, 2019 |
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- Title
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- Abstract
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- Assignees and inventors
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Abstract
Official abstract text for this publication.
A variable valve device for an engine, may include a camshaft; a movable cam device fitted over the camshaft to be slidable in an axial direction of the camshaft, and configured such that cams with at least two different cam profiles and a guide protruding portion are disposed along the axial direction of the camshaft; at least one shaft groove linearly processed to have a predetermined cross-sectional shape in an external circumferential surface of the camshaft along the axial direction thereof; a cam groove provided in an internal circumferential surface of the movable cam device to communicate with the shaft groove; and an insertion member inserted into a communication space defined by the shaft groove and the cam groove such that a rotational displacement of the camshaft is transmitted to the movable cam device.
First claim
Opening claim text (preview).
What is claimed is: 1. A variable valve device for an engine, the variable valve device comprising: a camshaft; a movable cam device including a movable camshaft fitted over the camshaft to be slidable in an axial direction of the camshaft, wherein cams with at least two different cam profiles and a guide protruding portion are disposed on the movable camshaft along the axial direction of the camshaft; at least one shaft groove linearly processed on the camshaft to have a predetermined cross-sectional shape in an external circumferential surface of the camshaft along the axial direction of the camshaft; at least one cam groove provided in an internal circumferential surface of the movable cam device to communicate with the at least one shaft groove; and an insertion member inserted into a communication space defined between the at least one shaft groove and the at least one cam groove, wherein a rotational displacement of the camshaft is transmitted to the movable cam device by the insertion member, wherein each of the at least one shaft groove and the at least one cam groove has a semicircular cross section, and the communication space has a circular cross section, and wherein the insertion member includes a rod with a circular cross section and being inserted into the communication space. 2. The variable valve device of claim 1 , wherein the at least one shaft groove is provided in plural and spaced with each other around the external circumferential surface of the camshaft. 3. A variable valve device for an engine, the variable valve device comprising: a camshaft, a movable cam device including a movable camshaft fitted over the camshaft to be slidable in an axial direction of the camshaft, wherein cams with at least two different cam profiles and a guide protruding portion are disposed on the movable camshaft along the axial direction of the camshaft; at least one shaft groove linearly processed on the camshaft to have a predetermined cross-sectional shape in an external circumferential surface of the camshaft along the axial direction of the camshaft; at least one cam groove provided in an internal circumferential surface of the movable cam device to communicate with the at least one shaft groove; and an insertion member inserted into a communication space defined between the at least one shaft groove and the at least one cam groove, wherein a rotational displacement of the camshaft is transmitted to the movable cam device by the insertion member, wherein the at least one shaft groove and the at least one cam groove are configured to form the communication space having a polygonal cross section, and wherein the insertion member includes a rod with a cross section corresponding to the polygonal cross section defined between the at least one shaft groove and the at least one cam groove and being inserted into the communication space having the polygonal cross section. 4. The variable valve device of claim 3 , wherein the at least one shaft groove is provided in plural and spaced with each other around the external circumferential surface of the camshaft.
Assignees
Inventors
Classifications
- F01L13/0042Primary
with cams being profiled in axial and radial direction · CPC title
with cams provided on an axially slidable sleeve · CPC title
Electromagnets · CPC title
- F01L1/0532Primary
the cams being directly in contact with the driven valve · CPC title
- F01L13/0015Primary
for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque · CPC title
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- What does patent US10458294B2 cover?
- A variable valve device for an engine, may include a camshaft; a movable cam device fitted over the camshaft to be slidable in an axial direction of the camshaft, and configured such that cams with at least two different cam profiles and a guide protruding portion are disposed along the axial direction of the camshaft; at least one shaft groove linearly processed to have a predetermined cross-s…
- Who is the assignee on this patent?
- Hyundai Motor Co Ltd, Kia Motors Corp
- What technology area does this patent fall under?
- Primary CPC classification F01L13/0042. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Oct 29 2019 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 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).