Line pressure control apparatus and method for vehicle
US-9080618-B2 · Jul 14, 2015 · US
Pressure controlled driveline mechanical coupling
US9458900B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9458900-B2 |
| Application number | US-201514854547-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 15, 2015 |
| Priority date | Dec 19, 2011 |
| Publication date | Oct 4, 2016 |
| Grant date | Oct 4, 2016 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A vehicle includes a motive power source, a transmission, and a clutch system. The vehicle further includes a controller that causes the clutch system to generate a generally constant clutch pressure to mechanically couple the motive power source and transmission as a line pressure associated with the transmission varies.
First claim
Opening claim text (preview).
What is claimed is: 1. A method comprising: by a controller, generating and outputting a command to provide current to a clutch system to mechanically couple an electric machine and transmission based on received data indicative of a target clutch pressure and transmission line pressure; and altering the command based on received data indicative of actual clutch pressure such that the actual clutch pressure is maintained equal to the target clutch pressure as the transmission line pressure varies. 2. The method of claim 1 further comprising selecting the target clutch pressure based on the data indicative of the transmission line pressure. 3. The method of claim 1 , wherein the line pressure varies due to activation of a mechanical oil pump while an electric oil pump is on. 4. A vehicle system comprising: a controller configured to generate and output a command to provide current to a clutch system to mechanically couple an electric machine and transmission based on received data indicative of a target clutch pressure and transmission line pressure, and alter the command based on received data indicative of actual clutch pressure such that the actual clutch pressure is maintained equal to the target clutch pressure as the line pressure varies. 5. The vehicle system of claim 4 , wherein the controller is further configured to select the target clutch pressure based on the data indicative of the transmission line pressure. 6. The vehicle system of claim 4 , wherein the line pressure varies due to activation of a mechanical oil pump while an electric oil pump is on.
Assignees
Inventors
Classifications
- F16D48/08Primary
Regulating clutch take-up on starting · CPC title
Cross-Sectional Technologies · mapped topic
by controlling transmissions or clutches · CPC title
Clutch torque · CPC title
Parallel type · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9458900B2 cover?
- A vehicle includes a motive power source, a transmission, and a clutch system. The vehicle further includes a controller that causes the clutch system to generate a generally constant clutch pressure to mechanically couple the motive power source and transmission as a line pressure associated with the transmission varies.
- Who is the assignee on this patent?
- Ford Global Tech Llc
- What technology area does this patent fall under?
- Primary CPC classification F16D48/08. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Oct 04 2016 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).