CN112682679B - Variable displacement oil pump capable of avoiding interference - Google Patents
Variable displacement oil pump capable of avoiding interference Download PDFInfo
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- CN112682679B CN112682679B CN202110095928.2A CN202110095928A CN112682679B CN 112682679 B CN112682679 B CN 112682679B CN 202110095928 A CN202110095928 A CN 202110095928A CN 112682679 B CN112682679 B CN 112682679B
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Abstract
The invention provides a variable displacement oil pump capable of avoiding interference, which comprises a pump body, a pump cover, a variable slider and a variable spring, wherein the variable slider is arranged in a cavity of the pump body, a rotor cavity is arranged in the middle of the variable slider, a variable feedback cavity is arranged between the variable slider and the side wall of the cavity of the pump body and is communicated with a main oil duct through an oil path, an isolation cavity is arranged on the end surface of the variable slider corresponding to the variable feedback cavity, and the isolation cavity is positioned between the rotor cavity and the variable feedback cavity; an inclined oil groove is arranged on the pump body or the pump cover, one end of the inclined oil groove is communicated with the isolation cavity of the variable sliding block, and the other end of the inclined oil groove is communicated with the low-pressure cavity of the oil pump. Therefore, high-pressure oil leaked from the end face of the variable slider cannot enter the variable feedback cavity but directly enters the isolation cavity and then flows back to the low-pressure cavity of the oil pump through the inclined oil groove on the pump body or the pump cover, so that the high-pressure oil at the outlet of the isolation pump and the feedback oil of the main oil duct are isolated, and the oil pressure in the variable feedback cavity is prevented from being interfered.
Description
Technical Field
The invention relates to the technical field of internal combustion engine lubrication, in particular to a variable displacement oil pump.
Background
Pressure oil of a variable feedback cavity of the conventional variable displacement oil pump usually comes from a main oil gallery, pressure of the pressure oil from the main oil gallery is attenuated after being filtered by a machine cooler, so that oil pressure in the variable feedback cavity is lower than that of an outlet of the pump, high-pressure oil at the outlet of the pump easily leaks to the variable feedback cavity through an end face gap, extra pressure is generated in the variable feedback cavity, the high-pressure oil at the outlet of the pump and the pressure oil from the main oil gallery act on a variable slider together to perform variable, oil pressure fluctuation of the feedback cavity is caused, and variable inaccuracy, such as unexpected variable, advanced variable and the like, occurs.
Disclosure of Invention
The invention aims to provide a variable displacement oil pump capable of avoiding interference.
In order to solve the technical problem, the technical scheme of the control method of the invention is as follows: a variable displacement oil pump capable of avoiding interference comprises a pump body, a pump cover, a variable slider and a variable spring, wherein the variable slider is arranged in a cavity of the pump body, a rotor cavity is arranged in the middle of the variable slider, a variable feedback cavity is arranged between the variable slider and the side wall of the cavity of the pump body and is communicated with a main oil duct through an oil path, an isolation cavity is arranged on the end face of the variable slider corresponding to the variable feedback cavity and is positioned between the rotor cavity and the variable feedback cavity; and an inclined oil groove is arranged on the pump body or the pump cover, one end of the inclined oil groove is communicated with the isolation cavity of the variable sliding block, and the other end of the inclined oil groove is communicated with the low-pressure cavity of the oil pump.
In the technical scheme, the position, corresponding to the variable feedback cavity, of the end face of the variable slider is provided with the isolation cavity, and the isolation cavity is located between the rotor cavity and the variable feedback cavity, so that pump outlet high-pressure oil leaked from the end face of the variable slider cannot enter the variable feedback cavity but directly enters the isolation cavity and then flows back to the low-pressure cavity of the oil pump through the inclined oil groove in the pump body or the pump cover, so that the effects of isolating the pump outlet high-pressure oil from the main oil duct feedback oil are achieved, and the oil pressure in the variable feedback cavity is prevented from being interfered.
In one embodiment, the oil pump is a direct push vane pump.
In one embodiment, the pump body is provided with an electromagnetic valve, and the electromagnetic valve is used for controlling the on-off of an oil path between the variable feedback cavity and the main oil duct.
In one embodiment, the isolation cavity is a square cavity penetrating through two end faces of the variable slider.
Drawings
Fig. 1 is a schematic diagram of an oil pump structure in an embodiment of the present invention;
FIG. 2 is an enlarged view of part A of FIG. 1;
the reference signs are:
1-pump body 2-variable slide block 3-variable spring
4-rotor 5-blade 6-electromagnetic valve
7-variable feedback cavity 8-isolation cavity 9-inclined oil 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.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or interconnected between two elements, directly or indirectly through intervening media, and the specific meaning of the terms may be understood by those skilled in the art according to their specific situation.
As shown in fig. 1 and 2, the variable displacement oil pump capable of avoiding interference is a direct-push vane pump, and includes a pump body 1, a pump cover, a variable slider 2, a variable spring 3, a rotor 4, a vane 5, and an electromagnetic valve 6, where the variable slider 2 is disposed in a cavity of the pump body 1, a rotor cavity for accommodating the rotor 4 and the vane 5 is disposed in the middle of the variable slider 2, a variable feedback cavity 7 is disposed between the variable slider 2 and a sidewall of the cavity of the pump body 1, the variable feedback cavity 7 is communicated to a main oil gallery through an oil passage, and the electromagnetic valve 6 is disposed on the pump body 1 for controlling on/off of the oil passage between the variable feedback cavity 7 and the main oil gallery; an isolation cavity 8 is arranged on the end surface of the variable slider 2 corresponding to the variable feedback cavity 7, the isolation cavity 8 is positioned between the rotor cavity and the variable feedback cavity 7, and the isolation cavity 8 is arranged to be a square cavity penetrating through the two end surfaces of the variable slider 2; an inclined oil groove 9 is arranged on the pump body 1 or the pump cover, one end of the inclined oil groove 9 is communicated with the isolation cavity 8 of the variable sliding block, and the other end of the inclined oil groove 9 is communicated with the low-pressure cavity of the oil pump.
In the technical scheme, the position, corresponding to the variable feedback cavity 7, of the end face of the variable slider 2 is provided with the isolation cavity 8, and the isolation cavity 8 is located between the rotor cavity and the variable feedback cavity 7, so that pump outlet high-pressure oil leaked from the end face of the variable slider 2 cannot enter the variable feedback cavity 7 but directly enters the isolation cavity 8 and then flows back to the low-pressure cavity of the oil pump through the pump body 1 or the inclined oil groove 9 on the pump cover, and therefore the effects of isolating the pump outlet high-pressure oil and main oil duct feedback oil are achieved, and the oil pressure in the variable feedback cavity 7 is prevented from being interfered.
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 oil pump that can avoid interference, includes the pump body (1), pump cover, variable slider (2), variable spring (3), variable slider (2) set up in the cavity of the pump body (1), the middle part of variable slider (2) is equipped with the rotor chamber, be equipped with variable feedback chamber (7) between the lateral wall of variable slider (2) and pump body (1) cavity, variable feedback chamber (7) communicate main oil duct through the oil circuit, its characterized in that: an isolation cavity (8) penetrating through two end faces of the variable slider (2) is arranged on the variable slider (2) corresponding to the variable feedback cavity (7), and the isolation cavity (8) is positioned between the rotor cavity and the variable feedback cavity (7); an inclined oil groove (9) is formed in the pump body (1) or the pump cover, one end of the inclined oil groove (9) is communicated with the isolation cavity (8) of the variable sliding block, and the other end of the inclined oil groove is communicated with the low-pressure cavity of the oil pump.
2. The variable displacement oil pump capable of avoiding disturbance according to claim 1, characterized in that: the oil pump is a direct-push vane pump.
3. A variable displacement oil pump capable of avoiding disturbance according to claim 1 or 2, characterized in that: the variable oil return pump is characterized in that an electromagnetic valve (6) is arranged on the pump body (1), and the electromagnetic valve (6) is used for controlling the on-off of an oil path between the variable feedback cavity (7) and the main oil duct.
4. A variable displacement oil pump capable of avoiding disturbance according to claim 1 or 2, characterized in that: the isolation cavity (8) is a square cavity which penetrates through two end faces of the variable sliding block (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110095928.2A CN112682679B (en) | 2021-01-25 | 2021-01-25 | Variable displacement oil pump capable of avoiding interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110095928.2A CN112682679B (en) | 2021-01-25 | 2021-01-25 | Variable displacement oil pump capable of avoiding interference |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112682679A CN112682679A (en) | 2021-04-20 |
| CN112682679B true CN112682679B (en) | 2022-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110095928.2A Active CN112682679B (en) | 2021-01-25 | 2021-01-25 | Variable displacement oil pump capable of avoiding interference |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443963A (en) * | 2015-12-01 | 2016-03-30 | 东风汽车泵业有限公司 | Blade variable pump |
| CN110107795A (en) * | 2019-06-20 | 2019-08-09 | 湖南机油泵股份有限公司 | It is a kind of grease proofing to press dry the vane pump disturbed |
| CN111305925A (en) * | 2020-04-24 | 2020-06-19 | 湖南机油泵股份有限公司 | Variable displacement engine oil pump control system with pressure safety protection |
| CN111322509A (en) * | 2020-04-24 | 2020-06-23 | 湖南机油泵股份有限公司 | Variable displacement pump capable of reducing variable fluctuation |
| CN211260310U (en) * | 2019-11-28 | 2020-08-14 | 哈尔滨东安汽车动力股份有限公司 | Crankshaft direct-drive vane type variable-displacement oil pan pump |
| CN211694318U (en) * | 2020-02-27 | 2020-10-16 | 湖南机油泵股份有限公司 | Blade type variable pump for commercial vehicle |
| CN112013263A (en) * | 2020-09-02 | 2020-12-01 | 湖南机油泵股份有限公司 | Variable displacement oil pump capable of improving volumetric efficiency |
| CN212272537U (en) * | 2020-05-18 | 2021-01-01 | 湖南机油泵股份有限公司 | Can avoid variable disturbed impeller pump |
-
2021
- 2021-01-25 CN CN202110095928.2A patent/CN112682679B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443963A (en) * | 2015-12-01 | 2016-03-30 | 东风汽车泵业有限公司 | Blade variable pump |
| CN110107795A (en) * | 2019-06-20 | 2019-08-09 | 湖南机油泵股份有限公司 | It is a kind of grease proofing to press dry the vane pump disturbed |
| CN211260310U (en) * | 2019-11-28 | 2020-08-14 | 哈尔滨东安汽车动力股份有限公司 | Crankshaft direct-drive vane type variable-displacement oil pan pump |
| CN211694318U (en) * | 2020-02-27 | 2020-10-16 | 湖南机油泵股份有限公司 | Blade type variable pump for commercial vehicle |
| CN111305925A (en) * | 2020-04-24 | 2020-06-19 | 湖南机油泵股份有限公司 | Variable displacement engine oil pump control system with pressure safety protection |
| CN111322509A (en) * | 2020-04-24 | 2020-06-23 | 湖南机油泵股份有限公司 | Variable displacement pump capable of reducing variable fluctuation |
| CN212272537U (en) * | 2020-05-18 | 2021-01-01 | 湖南机油泵股份有限公司 | Can avoid variable disturbed impeller pump |
| CN112013263A (en) * | 2020-09-02 | 2020-12-01 | 湖南机油泵股份有限公司 | Variable displacement oil pump capable of improving volumetric efficiency |
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|---|---|
| CN112682679A (en) | 2021-04-20 |
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