Hydraulic pressure supply system of automatic transmission
US-2017059032-A1 · Mar 2, 2017 · US
Pump unit for a drive train of a motor vehicle
US11885331B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11885331-B2 |
| Application number | US-202117181078-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 22, 2021 |
| Priority date | Feb 27, 2020 |
| Publication date | Jan 30, 2024 |
| Grant date | Jan 30, 2024 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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- CPC / IPC classifications
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Abstract
Official abstract text for this publication.
A pump unit which has at least one high-pressure port and at least one low-pressure port, having a motor and a hydraulic pump which has at least one high-pressure outlet and at least one low-pressure outlet, wherein the high-pressure outlet is connected to the high-pressure port via at least one pressure-regulating valve.
First claim
Opening claim text (preview).
The invention claimed is: 1. A pump unit comprising: at least one high-pressure port; at least one low-pressure port; a motor; and a hydraulic pump which has at least one high-pressure outlet and at least one low-pressure outlet, wherein the high-pressure outlet is connected to the high-pressure port via at least one pressure-regulating valve, wherein the hydraulic pump is a rotary vane pump having multiple rotary vanes which, together with a stator and a rotor, delimit multiple low-pressure chambers, wherein each rotary vane delimits a high-pressure chamber within the rotor, and wherein in at least one side wall of the stator, a high-pressure inlet is assigned exclusively to the high-pressure chamber, and a low-pressure inlet separate from the high-pressure inlet is assigned exclusively to the low-pressure chamber. 2. The pump unit according to claim 1 , further comprising an integrated storage vessel from which drawing-in by the hydraulic pump is realized. 3. The pump unit according to claim 1 , wherein the hydraulic pump has a low-pressure pump, into which a high-pressure pump is integrated. 4. The pump unit according to claim 3 , further comprising a branch from the low-pressure outlet, wherein said branch leads to the suction side of the high-pressure pump. 5. The pump unit according to claim 1 , wherein the high-pressure inlet is provided with a supply via a branch from the low-pressure outlet.
Assignees
Inventors
Classifications
- F04C2/3446Primary
the inner and outer member being in contact along more than one line or surface · CPC title
- F04C2/344Primary
with vanes reciprocating with respect to the inner member · CPC title
characterised by using valves controlling pressure or flow rate, e.g. discharge valves {or unloading valves}(F04C14/10 takes precedence) · CPC title
Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet · CPC title
of the non-return type · CPC title
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Frequently asked questions
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- What does patent US11885331B2 cover?
- A pump unit which has at least one high-pressure port and at least one low-pressure port, having a motor and a hydraulic pump which has at least one high-pressure outlet and at least one low-pressure outlet, wherein the high-pressure outlet is connected to the high-pressure port via at least one pressure-regulating valve.
- Who is the assignee on this patent?
- Fte Automotive Gmbh
- What technology area does this patent fall under?
- Primary CPC classification F04C2/3446. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jan 30 2024 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).