Continuous variable valve duration apparatus and engine provided with the same
US-2016369665-A1 · Dec 22, 2016 · US
Internal combustion engine and method of assembling thereof
US2018283239A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018283239-A1 |
| Application number | US-201815884475-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 31, 2018 |
| Priority date | Mar 29, 2017 |
| Publication date | Oct 4, 2018 |
| Grant date | — |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
An internal combustion engine includes: a head cover covering a cylinder head; and a variable valve actuation mechanism. The variable valve actuation mechanism includes: a cam placed inside the head cover and rotating with a camshaft extending in a rotation axis direction; and an intermediate arm placed inside the head cover and sandwiched between the cam and a rocker arm. A pair of side through-holes, which are provided for a support rod supporting the intermediate arm to pass through, are formed in side portions of the head cover so as to face each other along the rotation axis direction.
First claim
Opening claim text (preview).
What is claimed is: 1 . An internal combustion engine comprising: a head cover covering a cylinder head; and a variable valve actuation mechanism, wherein the variable valve actuation mechanism comprises: a cam placed inside the head cover and rotating with a camshaft extending in a rotation axis direction; and an intermediate arm placed inside the head cover and sandwiched between the cam and a rocker arm, wherein a pair of side through-holes, which are provided for a support rod supporting the intermediate arm to pass through, are formed in side portions of the head cover so as to face each other along the rotation axis direction. 2 . The internal combustion engine according to claim 1 , wherein an arm through-hole, which is provided for the support rod to pass through, is formed to penetrate the intermediate arm in the rotation axis direction. 3 . The internal combustion engine according to claim 1 , wherein the intermediate arm is rotatably supported by a control shaft extending in the rotation axis direction. 4 . A method of assembling an internal combustion engine, the internal combustion engine comprising: a head cover covering a cylinder head; and a variable valve actuation mechanism, wherein the variable valve actuation mechanism comprises: a cam placed inside the head cover and rotating with a camshaft extending in a rotation axis direction; and an intermediate arm placed inside the head cover and sandwiched between the cam and a rocker arm, wherein a pair of side through-holes are formed in side portions of the head cover so as to face each other along the rotation axis direction, the method of assembling comprising: inserting a support rod into the head cover through the pair of side through-holes to support the intermediate arm with the support rod inside the head cover; and mounting the head cover on the cylinder head.
Assignees
Inventors
Classifications
Valve arrangements comprising rollers · CPC title
Manufacturing · CPC title
Casings, e.g. crankcases · CPC title
Adjusting or compensating clearance · CPC title
overhead type · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2018283239A1 cover?
- An internal combustion engine includes: a head cover covering a cylinder head; and a variable valve actuation mechanism. The variable valve actuation mechanism includes: a cam placed inside the head cover and rotating with a camshaft extending in a rotation axis direction; and an intermediate arm placed inside the head cover and sandwiched between the cam and a rocker arm. A pair of side throug…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F01L13/0026. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Oct 04 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).