Castellation assembly, rocker arm, and actuator assembly therefor
US-12071870-B2 · Aug 27, 2024 · US
Variable valve operating apparatus for internal combustion engine
US8925504B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8925504-B2 |
| Application number | US-201013389540-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 7, 2010 |
| Priority date | Nov 25, 2009 |
| Publication date | Jan 6, 2015 |
| Grant date | Jan 6, 2015 |
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Abstract
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Provided is a variable valve operating apparatus for an internal combustion engine, which can switch, based on an actuation of a single actuator, operating characteristics of valves for a plurality of cylinders collectively and smoothly using a rigid member, while suppressing an increase in wear of a guide rail and reducing the number of delay mechanisms. A changeover mechanism to switch operating characteristics of valves for each cylinder of first and second cylinder groups is provided. The changeover mechanism includes link shafts as a rigid member which is displaced when being engaged with a helical guide rail as a result of the actuation of an electromagnetic solenoid. The changeover mechanism includes a delay mechanism, which delays the displacement of the second link shaft in a cylinder in which the valves are lifting when the electromagnetic solenoid is actuated, at some point in the link shafts between the first cylinder group and the second cylinder group.
First claim
Opening claim text (preview).
The invention claimed is: 1. A variable valve operating apparatus for an internal combustion engine that has a first cylinder group made up of a plurality of cylinders lying side by side and a second cylinder group made up of another plurality of cylinders lying side by side, and has an explosion order which is set by a plurality of cams each corresponding to each cylinder of the first and second cylinder groups in such a way that a common base-circle section of the cams is present…
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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 US8925504B2 cover?
- Provided is a variable valve operating apparatus for an internal combustion engine, which can switch, based on an actuation of a single actuator, operating characteristics of valves for a plurality of cylinders collectively and smoothly using a rigid member, while suppressing an increase in wear of a guide rail and reducing the number of delay mechanisms. A changeover mechanism to switch …
- Who is the assignee on this patent?
- Tsuzuki Motohiro, Shimasaki Shinobu, Kidooka Akio, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification F01L1/26. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jan 06 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).