Transmission for a motor vehicle
US-12535132-B2 · Jan 27, 2026 · US
Speed sensitive scavenge flow control
US2016266583A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016266583-A1 |
| Application number | US-201514656632-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 12, 2015 |
| Priority date | Mar 12, 2015 |
| Publication date | Sep 15, 2016 |
| Grant date | — |
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- Title
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Abstract
Official abstract text for this publication.
A biased spool valve restrictor member for positioning in the scavenge channel in a viscous fluid fan drive where it can restrict the flow of scavenge pump-out at low fan speed, and thereby improving the ability of the fan drive to engage at such speeds.
First claim
Opening claim text (preview).
What is claimed is: 1 . A fluid flow restrictor device comprising: a spool valve member; and a compression spring member. 2 . The fluid flow restrictor member as described in claim 1 further comprising a plug member. 3 . The fluid flow restrictor member as described in claim 1 further comprising a retainer cap member. 4 . The fluid flow restrictor member as described in claim 1 wherein said spool valve member comprises a hollow cylinder with a plurality of openings at one end. 5 . The fluid flow restrictor member as described in claim 4 wherein four openings are provided in the spool valve member. 6 . A fluid flow restrictor member for a viscous fluid fan drive, said fan drive having a scavenge channel in which the fluid flow restrictor member is positioned, said fluid flow restrictor member comprising a spool valve member with a plurality of fluid openings therein and a compression spring member positioned at one end of said spool valve member. 7 . The fluid flow restrictor member as described in claim 6 further comprising a plug member connected to said compression spring member. 8 . The fluid flow restrictor member further as described in claim 6 comprising a cap retainer member positioned between said spool valve member and said compression spring member. 9 . The fluid flow restrictor member as described in claim 6 wherein said plurality of openings are positioned adjacent one end of said spool valve member. 10 . The fluid flow restrictor member as described in claim 9 wherein four openings are provided in said spool valve member. 11 . A method of preventing a decrease in the output speed of a fan member in a viscous clutch fan drive when the input speed is being decreased, said method comprising the steps of: providing a viscous clutch fan drive assembly with a working chamber and a scavenge passageway; providing a flow restriction member in said scavenge passageway; said flow restriction member comprising a spool valve member with a plurality of openings and a coil spring member. 12 . The method as described in claim 11 wherein said scavenge passageway has an inlet port and wherein at low input speed said compression spring biases said spool valve member to a position wherein said openings are not in alignment with said inlet port.
Assignees
Inventors
Classifications
- G05D7/018Primary
using rotary sensing element · CPC title
Regenerative pumps (for liquids or for liquids and elastic fluids F04D5/002) · CPC title
- F04D25/022Primary
comprising a yielding coupling, e.g. hydraulic (a magnetic coupling F04D25/026) · CPC title
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Frequently asked questions
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- What does patent US2016266583A1 cover?
- A biased spool valve restrictor member for positioning in the scavenge channel in a viscous fluid fan drive where it can restrict the flow of scavenge pump-out at low fan speed, and thereby improving the ability of the fan drive to engage at such speeds.
- Who is the assignee on this patent?
- Borgwarner Inc
- What technology area does this patent fall under?
- Primary CPC classification G05D7/018. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Sep 15 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).