Preignition restraining device
US-2015361914-A1 · Dec 17, 2015 · US
Apparatus and method for controlling variable valve mechanism
US9109472B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9109472-B2 |
| Application number | US-201213617034-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 14, 2012 |
| Priority date | Sep 20, 2011 |
| Publication date | Aug 18, 2015 |
| Grant date | Aug 18, 2015 |
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Abstract
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An control apparatus for a variable valve mechanism, is capable of executing fail safe control in a case in which locking occurs in either one of a cam shaft of a double shaft structure. The control apparatus for a variable valve mechanism has a cam shaft of a double shaft structure including an outer cam shaft and an inner cam shaft, such that it is possible to adjust the phase of a sub cam of inner cam shaft with respect to an main cam of outer cam shaft, and by means these cams, at least one of an intake valve and an exhaust valve of an internal combustion engine is operated. When an abnormality is detected in one of the cam shafts, the control apparatus controls the phase of the cam of the other cam shaft, in accordance with the determined current phase of the cam.
First claim
Opening claim text (preview).
What is claimed is: 1. An apparatus for controlling a variable valve mechanism in an internal combustion engine, wherein: the variable valve mechanism has a cam shaft of a double shaft structure including an outer cam shaft and an inner cam shaft, and a cam is attached to each of the outer and inner cam shafts, such that a phase of a cam of one of the cam shafts is adjustable with respect to a cam of the other cam shaft; the cams are arranged to operate with at least one of a pa…
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Classifications
Mechanical Engineering · mapped topic
- F01L1/34Primary
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 US9109472B2 cover?
- An control apparatus for a variable valve mechanism, is capable of executing fail safe control in a case in which locking occurs in either one of a cam shaft of a double shaft structure. The control apparatus for a variable valve mechanism has a cam shaft of a double shaft structure including an outer cam shaft and an inner cam shaft, such that it is possible to adjust the phase of a sub cam of…
- Who is the assignee on this patent?
- Araya Norihiro, Machida Kenichi, Hitachi Automotive Systems Ltd
- What technology area does this patent fall under?
- Primary CPC classification F01L1/34. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Aug 18 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).