Internal lube tank lube level control system
US-2016341301-A1 · Nov 24, 2016 · US
Transmission sump level control system
US9068645B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9068645-B2 |
| Application number | US-201313767909-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 15, 2013 |
| Priority date | Dec 14, 2012 |
| Publication date | Jun 30, 2015 |
| Grant date | Jun 30, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
A method of controlling a level of fluid in a main sump of a transmission includes opening an auxiliary reservoir with a first valve when fluid temperature in the main sump is at or below the predetermined temperature. The first valve is opened to increase the level of fluid in the main sump to at least a predetermined height so that transmission rotating components contact the fluid and generate splash lubrication. When the transmission is transmitting torque and the fluid is above the predetermined temperature, the level of fluid in the main sump is maintained below a predetermined height with closed first valve, such that the rotating components do not contact the fluid inside the main sump. A fluid pump alone is sufficient to lubricate the rotating components above the predetermined temperature and sufficient to lubricate the rotating components at or below the predetermined temperature only with splash lubrication.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of controlling a level of fluid in a main sump of a transmission having a pump for controlling flow of the fluid inside the transmission, the method comprising: opening via a controller fluid communication between an auxiliary reservoir and the main sump by opening an active first valve when a temperature of the fluid inside the main sump is at or below a predetermined temperature; and closing via the controller the auxiliary reservoir by cl…
Assignees
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Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
- F16H57/0447Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US9068645B2 cover?
- A method of controlling a level of fluid in a main sump of a transmission includes opening an auxiliary reservoir with a first valve when fluid temperature in the main sump is at or below the predetermined temperature. The first valve is opened to increase the level of fluid in the main sump to at least a predetermined height so that transmission rotating components contact the fluid and genera…
- Who is the assignee on this patent?
- Gm Global Tech Operations Inc
- What technology area does this patent fall under?
- Primary CPC classification F16H57/0447. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jun 30 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).