Control apparatus for transmission
US-2015345634-A1 · Dec 3, 2015 · US
Device for operating a transmission apparatus having a plurality of electrohydraulically actuated friction-fit and form-fit shift elements
US9103435B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9103435-B2 |
| Application number | US-201213444962-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 12, 2012 |
| Priority date | Apr 28, 2011 |
| Publication date | Aug 11, 2015 |
| Grant date | Aug 11, 2015 |
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Abstract
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A mechanism for actuating a transmission having shifting elements. A self-holding valve device is movable into a first position, by a pilot pressure, against a force directed to a second position and held by a pressure holding signal in the first position. Transmission of a pressure signal, to a switching valve, is blocked by the self-holding valve device in the first position but, in the second position, is applied to the switching valve. When the driver sets the switching valve to a first shift position, the pressure signal can be applied to valve devices of at least two of the shifting elements that produce an actuating pressure and, in a second shift position of the switching valve, the onward transmission of the pressure signal, to the valve devices of the shifting elements that produce an actuating pressure, is blocked in the area of the switching valve.
First claim
Opening claim text (preview).
The invention claimed: 1. A mechanism ( 4 ) for actuating a transmission device ( 1 ) during a normal operation and during an emergency operation after failure of an electric transmission control system, the mechanism comprising: a plurality of electro-hydraulically actuated shifting elements (A to F) which, to obtain a gear (“ 1 ” to “ 9 ”, “R”) in the transmission device ( 1 ), being either engagable in a force flow or disengagable therefrom by applying at least one of a plurali…
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Mechanical Engineering · mapped topic
Cross-Sectional Technologies · mapped topic
- F16H61/0206Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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- What does patent US9103435B2 cover?
- A mechanism for actuating a transmission having shifting elements. A self-holding valve device is movable into a first position, by a pilot pressure, against a force directed to a second position and held by a pressure holding signal in the first position. Transmission of a pressure signal, to a switching valve, is blocked by the self-holding valve device in the first position but, in the secon…
- Who is the assignee on this patent?
- Schmidt Thilo, Popp Christian, Zahnradfabrik Friedrichshafen
- What technology area does this patent fall under?
- Primary CPC classification F16H61/0206. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Aug 11 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).