Operation device
US-9202649-B2 · Dec 1, 2015 · US
Transmission gearshift control
US9014928B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9014928-B2 |
| Application number | US-201314036316-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 25, 2013 |
| Priority date | Feb 14, 2013 |
| Publication date | Apr 21, 2015 |
| Grant date | Apr 21, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
A method for controlling cylinder pressure producing piston displacement for actuating a control element of an automatic transmission during a gearshift, includes (a) applying boost pressure to the to the control valve controlling the piston, provided one of the following conditions is present a boost phase is unexpired, cylinder pressure is less than a desired pressure, and piston displacement exceeds a desired displacement; (b) applying stroke pressure to the cylinder provided piston displacement away from control element plates occurs; and (c) increasing stroke pressure provided piston displacement away from clutch plates has not occurred.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for controlling pressure applied to a piston that actuates a control element of an automatic transmission during a gearshift, comprising: (a) applying boost pressure to a valve controlling the piston provided one of the following conditions is present: a boost phase of the gearshift is unexpired, such pressure is less than a desired pressure, and displacement of the piston exceeds a desired displacement; (b) applying stroke pressure in the v…
Assignees
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Classifications
Mechanical Engineering · mapped topic
Cross-Sectional Technologies · mapped topic
- F16H59/02Primary
Mechanical Engineering · mapped topic
- F16H63/3026Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US9014928B2 cover?
- A method for controlling cylinder pressure producing piston displacement for actuating a control element of an automatic transmission during a gearshift, includes (a) applying boost pressure to the to the control valve controlling the piston, provided one of the following conditions is present a boost phase is unexpired, cylinder pressure is less than a desired pressure, and piston displacement…
- Who is the assignee on this patent?
- Ford Global Tech Llc
- What technology area does this patent fall under?
- Primary CPC classification F16H59/02. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Apr 21 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).