Method of controlling a transmission clutch
US-9181995-B1 · Nov 10, 2015 · US
Automatic transmission and starting time control method
US9026328B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9026328-B2 |
| Application number | US-201214359017-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 4, 2012 |
| Priority date | Nov 18, 2011 |
| Publication date | May 5, 2015 |
| Grant date | May 5, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
A transmission controller increases an indicated hydraulic pressure to a starting frictional engagement element to a normal hydraulic pressure, causes a hydraulic piston to stroke and executes a learning control of the indicated hydraulic pressure so that a time until the starting frictional engagement element starts generating a transmission capacity after the range is switched from the neutral range to the drive range becomes a target time when a range is switched from a neutral range to a drive range. The transmission controller further detects a driver's starting intention and increases the indicated hydraulic pressure to the starting frictional engagement element to a starting time hydraulic pressure higher than the normal hydraulic pressure and prohibits the learning control if the starting intention is detected before the starting frictional engagement element starts generating the transmission capacity.
First claim
Opening claim text (preview).
The invention claimed is: 1. An automatic transmission, comprising: a starting frictional engagement element configured by a plurality of friction plates and a hydraulic piston for pressing the friction plates and to be released in a neutral range and to be engaged in a drive range; a hydraulic control unit configured to increase an indicated hydraulic pressure to the starting frictional engagement element to a normal hydraulic pressure and cause the hydraulic piston to stroke w…
Assignees
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Classifications
- F16D48/066Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
- F16H61/0251Primary
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 US9026328B2 cover?
- A transmission controller increases an indicated hydraulic pressure to a starting frictional engagement element to a normal hydraulic pressure, causes a hydraulic piston to stroke and executes a learning control of the indicated hydraulic pressure so that a time until the starting frictional engagement element starts generating a transmission capacity after the range is switched from the neutra…
- Who is the assignee on this patent?
- Jatco Ltd
- What technology area does this patent fall under?
- Primary CPC classification F16D48/066. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue May 05 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).