CN111322509A - Variable displacement pump capable of reducing variable fluctuation - Google Patents
Variable displacement pump capable of reducing variable fluctuation Download PDFInfo
- Publication number
- CN111322509A CN111322509A CN202010334074.4A CN202010334074A CN111322509A CN 111322509 A CN111322509 A CN 111322509A CN 202010334074 A CN202010334074 A CN 202010334074A CN 111322509 A CN111322509 A CN 111322509A
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- CN
- China
- Prior art keywords
- variable
- oil
- feedback
- cavity
- pressure oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N13/00—Lubricating-pumps
- F16N13/20—Rotary pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
- F16H57/0436—Pumps
Abstract
The invention provides a variable displacement pump capable of reducing variable fluctuation, which comprises a pump body, a variable slider, a variable spring and a rotor assembly, wherein a feedback pressure oil cavity is arranged between the side wall of a rotor cavity of the pump body and the variable slider, the pump body is also provided with a feedback oil channel communicated with the feedback pressure oil cavity, the other end of the feedback oil channel can be communicated with a main oil channel or a pump outlet, and an oil storage tank is arranged at the position where the feedback oil channel is connected to the feedback pressure oil cavity. The oil storage tank in the technical scheme can buffer the pressure oil flowing into the feedback pressure oil cavity, prevents the pressure from directly impacting the local part of the variable slide block, and avoids variable unexpected caused by abnormal motion of the variable slide block.
Description
Technical Field
The present invention relates to transmission lubrication systems, and more particularly to a variable displacement pump that reduces variable fluctuations.
Background
The variable displacement oil pump generally comprises a pump body, a variable slider, a variable spring, a rotor assembly, a rotating pin, a sealing element, a pump cover and other basic components, wherein a rotor cavity is arranged on the pump body, the variable slider and the variable spring are arranged in the rotor cavity, the rotor assembly is arranged in the variable slider, a feedback pressure oil cavity is arranged between the side wall of the rotor cavity of the pump body and the variable slider, a feedback oil channel communicated with the feedback pressure oil cavity is also arranged on the pump body, and the other end of the feedback oil channel can be communicated with a main oil channel or a pump outlet. However, the feedback oil passage on the pump body is usually long and narrow, so that pressure oil flowing from the main oil passage or the pump outlet easily impacts the variable sliding block, and causes local high pressure to cause abnormal movement of the sliding block, thereby causing variable non-predictability.
Disclosure of Invention
The object of the present invention is to provide a variable displacement pump with reduced fluctuations in the variable, avoiding the variable being unintended due to local high pressures.
In order to solve the technical problems, the invention adopts the following technical scheme: the variable displacement pump capable of reducing variable fluctuation comprises a pump body, a variable slider, a variable spring and a rotor assembly, wherein a feedback pressure oil cavity is formed between the side wall of a rotor cavity of the pump body and the variable slider, a feedback oil channel communicated with the feedback pressure oil cavity is further arranged on the pump body, the other end of the feedback oil channel can be communicated with a main oil channel or a pump outlet, and an oil storage tank is arranged at the position, connected to the feedback pressure oil cavity, of the feedback oil channel.
The oil storage tank in the technical scheme can buffer the pressure oil flowing into the feedback pressure oil cavity, prevents the pressure from directly impacting the local part of the variable slide block, and avoids variable unexpected caused by abnormal motion of the variable slide block.
Preferably, the oil reservoir is provided in the rotor chamber side wall.
Preferably, the oil reservoir is semi-cylindrical.
Furthermore, an oil guide groove is further formed in the variable sliding block and used for communicating a sealing element mounting groove in the variable sliding block with the feedback pressure oil cavity.
Drawings
FIG. 1 is a schematic view of an overall structure of an oil pump according to an embodiment of the present invention;
FIG. 2 is a schematic view of the pump body of FIG. 1;
the reference signs are:
1-pump body 2-variable slide block 3-variable spring
4-rotor component 5-feedback oil channel 6-feedback pressure oil cavity
7-oil storage tank 8-oil drainage tank 9-sealing element mounting groove.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
It should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used broadly in the present invention, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Further, in the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not in direct contact, but via another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature. The terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the invention.
As shown in fig. 1 and 2, the preferred embodiment of the present invention is: the variable displacement pump capable of reducing variable fluctuation comprises a pump body 2, a variable slider 2, a variable spring 3 and a rotor assembly 4, wherein a feedback pressure oil cavity 6 is arranged between the side wall of a rotor cavity of the pump body 1 and the variable slider 2, a feedback oil channel 5 communicated with the feedback pressure oil cavity 6 is further arranged on the pump body 1, the other end of the feedback oil channel 5 can be communicated with a main oil channel or a pump outlet, an oil storage tank 7 is arranged at the position where the feedback oil channel 5 is connected to the feedback pressure oil cavity 6, and the oil storage tank 7 is a semi-cylindrical groove arranged on the side wall of the rotor cavity.
The oil storage tank 7 can buffer the pressure oil flowing into the feedback pressure oil chamber 6, prevent the pressure from directly impacting the local part of the variable slide block 2, and avoid the variable slide block 2 from generating abnormal motion to cause variable unpredictability.
As shown in fig. 1, an oil guiding groove 8 is further provided on the variable slider 2, and the oil guiding groove 8 is used for communicating a sealing member mounting groove 9 on the variable slider 2 with the feedback pressure oil chamber 5.
The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.
Some of the drawings and descriptions of the present invention have been simplified to facilitate the understanding of the improvements over the prior art by those skilled in the art, and some other elements have been omitted from this document for the sake of clarity, and it should be appreciated by those skilled in the art that such omitted elements may also constitute the subject matter of the present invention.
Claims (4)
1. The utility model provides a variable displacement pump that can reduce variable fluctuation, includes the pump body (1), variable slider (2), variable spring (3), rotor subassembly (4), the rotor chamber lateral wall of the pump body (1) with be equipped with feedback pressure oil pocket (6) between variable slider (2), still be equipped with on the pump body (1) with the communicating feedback oil duct (5) of feedback pressure oil pocket (6), the other end of this feedback oil duct (5) can with main oil duct or pump export intercommunication, its characterized in that: an oil storage tank (7) is arranged at the position where the feedback oil channel (5) is connected to the feedback pressure oil cavity (6).
2. The variable displacement pump capable of reducing variable fluctuations of claim 1, wherein: the oil storage tank (7) is arranged on the side wall of the rotor cavity.
3. The variable displacement pump capable of reducing variable fluctuations of claim 2, wherein: the oil storage tank (7) is semi-cylindrical.
4. Variable displacement pump capable of reducing fluctuations in variables according to claim 1 or 2, characterized in that: the variable sliding block (2) is also provided with an oil guide groove (8), and the oil guide groove (8) is used for communicating a sealing element mounting groove (9) on the variable sliding block (2) with the feedback pressure oil cavity (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010334074.4A CN111322509A (en) | 2020-04-24 | 2020-04-24 | Variable displacement pump capable of reducing variable fluctuation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010334074.4A CN111322509A (en) | 2020-04-24 | 2020-04-24 | Variable displacement pump capable of reducing variable fluctuation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111322509A true CN111322509A (en) | 2020-06-23 |
Family
ID=71164611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010334074.4A Pending CN111322509A (en) | 2020-04-24 | 2020-04-24 | Variable displacement pump capable of reducing variable fluctuation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111322509A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302932A (en) * | 2020-11-11 | 2021-02-02 | 湖南机油泵股份有限公司 | Displacement-variable vane pump capable of avoiding pressure drop during temperature rise |
| CN112682679A (en) * | 2021-01-25 | 2021-04-20 | 湖南机油泵股份有限公司 | Variable displacement oil pump capable of avoiding interference |
| CN114294071A (en) * | 2022-01-08 | 2022-04-08 | 湖南机油泵股份有限公司 | Full variable displacement oil pump of commercial car |
-
2020
- 2020-04-24 CN CN202010334074.4A patent/CN111322509A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302932A (en) * | 2020-11-11 | 2021-02-02 | 湖南机油泵股份有限公司 | Displacement-variable vane pump capable of avoiding pressure drop during temperature rise |
| CN112302932B (en) * | 2020-11-11 | 2022-11-08 | 湖南机油泵股份有限公司 | Displacement-variable vane pump capable of avoiding pressure drop during temperature rise |
| CN112682679A (en) * | 2021-01-25 | 2021-04-20 | 湖南机油泵股份有限公司 | Variable displacement oil pump capable of avoiding interference |
| CN112682679B (en) * | 2021-01-25 | 2022-03-11 | 湖南机油泵股份有限公司 | Variable displacement oil pump capable of avoiding interference |
| CN114294071A (en) * | 2022-01-08 | 2022-04-08 | 湖南机油泵股份有限公司 | Full variable displacement oil pump of commercial car |
| CN114294071B (en) * | 2022-01-08 | 2022-11-18 | 湖南机油泵股份有限公司 | Full variable displacement oil pump of commercial car |
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