CN207131461U - A kind of two level displacement-variable oil pump - Google Patents
A kind of two level displacement-variable oil pump Download PDFInfo
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- CN207131461U CN207131461U CN201721151339.7U CN201721151339U CN207131461U CN 207131461 U CN207131461 U CN 207131461U CN 201721151339 U CN201721151339 U CN 201721151339U CN 207131461 U CN207131461 U CN 207131461U
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- feedback
- oil duct
- oil
- pressure
- variable
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Abstract
It the utility model is related to internal combustion engine lubrication equipment technical field, specially a kind of two level displacement-variable oil pump, including the pump housing, variable sliding block in the pump housing, rotating dog, variable spring and internal rotor, the variable sliding block is provided with spring lock block, first pressure feedback cavity and second pressure feedback cavity are provided between the variable sliding block stator and the pump housing, the feedback oil duct is provided with a switching control valve, when pump discharge oil liquid pressure is not up to setting value, the valve element of the switching control valve keeps the first feedback oil duct excuse and the second feedback oil duct orifice, when pump discharge oil liquid pressure meets or exceeds rated value, the valve element, which is moved to the left, makes the first feedback oil duct and second feed back oil duct disconnection, the second feedback oil duct keeps connecting simultaneously pressure release with oil leak hole simultaneously.
Description
Technical field
Internal combustion engine lubrication equipment technical field is the utility model is related to, specially a kind of two level displacement-variable oil pump.
Background technology
Displacement-variable oil pump is because its excellent energy-saving effect is favored by engine producer and vehicle producer very much, and especially two
Level variable delivery pump, Chinese patent（Application number 201510737472.X）Disclose a kind of two level variable displacement machine of combination valve type
Oil pump, including the pump housing, feedback pressure control chamber, variable sliding block, variable spring, control valve and pilot valve, the feedback pressure control
Chamber processed is connected with pump discharge and oil sump respectively by oil circuit, forms an oil-feed path and a draining path, the draining
The opening and closing of path are controlled by pilot valve, and the opening and closing of the oil-feed path are controlled jointly by control valve and pilot valve
System；The control valve and pilot valve are connected with main oil gallery, the engine oil pressure of main oil gallery directly act on control valve valve element and
The valve element of pilot valve.
Above-mentioned Control system architecture is complicated, adds the difficulty of processing and manufacture, and two valve bodies must act synergistically
The function of two level variable displacement can be realized, if one of valve body breaks down, then can not just realize variable displacement
Effect.
Utility model content
The purpose of this utility model is to provide a kind of simple in construction, two level displacement-variable oil pump of better reliability.
To realize this purpose, the utility model adopts the following technical scheme that：A kind of two level displacement-variable oil pump, including
The pump housing, variable sliding block, rotating dog, variable spring and internal rotor in the pump housing, the variable sliding block are provided with spring lock block,
First pressure feedback cavity and second pressure feedback cavity, the first pressure feedback cavity are provided between the variable sliding block stator and the pump housing
Rotating dog the same side is located at second pressure feedback cavity, the first pressure feedback cavity and second pressure feedback cavity are respectively communicated with
One feedback oil duct and the second feedback oil duct, the first feedback oil duct connect with main oil gallery, and the feedback oil duct is provided with all
Change control valve, the switching control valve includes valve body, in valve body and can move left and right valve element and valve core spring, the valve body
The first feedback oil duct interface, the second feedback oil duct interface, oil leak hole and pump discharge interface are provided with, the first feedback oil duct connects
Oil duct, the pump discharge orifice pump are fed back in mouth connection the first feedback oil duct, the second feedback oil duct interface connection second
Outlet, when pump discharge oil liquid pressure is not up to setting value, the valve element keeps the first feedback oil duct excuse and the second feedback oil
Pipeline joint connects, and when pump discharge oil liquid pressure meets or exceeds rated value, the valve element, which is moved to the left, makes the first feedback oily
Road and the second feedback oil duct disconnect, while the second feedback oil duct keeps connecting with oil leak hole and pressure release.
Preferably, the switching control valve includes cylinder shape valve, cylindrical spool and valve core spring, the cylinder valve
Core medial recess forms annular oil groove, relative in the side wall on the cylinder shape valve to be provided with the first feedback oil duct interface and second
Oil duct interface is fed back, the oily interface homonymy of second feedback is additionally provided with oil leak hole, and the valve body is anterior to be provided with pump discharge interface.
The beneficial effects of the utility model are：The utility model is simple in construction, only used a mechanical valve and realizes
Two level displacement variation, compared with prior art, the utility model has higher reliability, and its valve element is directly by the oil of pump discharge
Liquid promotes, and pressure regulation is more accurate.
Brief description of the drawings
Fig. 1 is the overall schematic of the utility model embodiment.
Fig. 2 is the switching control valve schematic diagram of the utility model embodiment.
In figure：
1- variable sliding block 2- rotating dog 3- variable springs
4- internal rotor 5- spring lock block 6- first pressure feedback cavities
7- second pressure feedback cavities 8a- first feeds back oil duct 8b- second and feeds back oil duct
9- switching control valve 9a- valve body 9b- valve elements
9c- valve elements paralysis 9d- first feeds back oil duct interface
9e- second feeds back oil duct interface 9f- drain tap 9g- pump discharge interfaces.
Embodiment
In description of the present utility model, it is to be understood that the orientation of the instruction such as term " interior ", " outer " or position are closed
It is to be described based on orientation shown in the drawings or position relationship, to be for only for ease of description the utility model and simplifying, rather than
Indicate or imply that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore can not
It is interpreted as to limitation of the present utility model.
In addition, term " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be mechanically connecting or being electrically connected
Connect or the connection of two element internals, can be joined directly together, can also be indirectly connected by intermediary, for
For one of ordinary skill in the art, the concrete meaning of the term can be understood as the case may be.
For the ease of the understanding of those skilled in the art, the utility model is made with reference to embodiment and accompanying drawing further
Explanation, the content that embodiment refers to not to restriction of the present utility model.
As shown in figure 1, a kind of two level displacement-variable oil pump, including the pump housing, the variable sliding block 1 in the pump housing, rotation
Pin 2, variable spring 3 and internal rotor 4, the variable sliding block 3 are provided with spring lock block 5, are provided between the variable sliding block 1 and the pump housing
First pressure feedback cavity 6 and second pressure feedback cavity 7, the first pressure feedback cavity 6 and second pressure feedback cavity 7 are located at rotation
The same side of pin 2, it is anti-that the first pressure feedback cavity 6 and second pressure feedback cavity 7 are respectively communicated with the first feedback oil duct 8a and second
Oil duct 8b is presented, described first feeds back oil duct 8a connects with main oil gallery, and the pump case is provided with a switching control valve 9, the switching
Control valve 9 includes valve body 9a, set in valve body 9a and on the valve element 9b and valve core spring 9c, the valve body 9a that can move left and right
There are the first feedback oil duct interface 9d, the second feedback oil duct interface 9e, oil leak hole 9f and pump discharge interface 9g, the first feedback oil
Oil duct 8a is fed back in pipeline joint 9d connections first, the second feedback oil duct of the second feedback oil duct interface 9e connections 8b, described to pump out
Mouth interface 9g connection pump discharges, when pump discharge oil liquid pressure is not up to setting value, the valve element 9b keeps the first feedback oil duct
The feedback oil duct interface 9e connections of interface 9d and second, when pump discharge oil liquid pressure meets or exceeds rated value, the valve element
9b, which is moved to the left, makes the first feedback oil duct 8a and second feed back oil duct 8b disconnections, while the second feedback oil duct 8b is kept and oil leak hole
9f connections and pressure release.
Obviously use only a switching control valve using the lubricating oil pump of above-mentioned technical proposal realizes in the prior art
The function of combination valve, compared with prior art, the structure of the lubricating oil pump is more simple, and reliability is higher, for designer
It is easier to be laid out.
Specifically, to realize the function required for above-mentioned switching control valve, the switching control valve 9 is designed as by inventor
Include cylinder shape valve 9a, cylindrical spool 9b and valve core spring 9c structure, in the cylindrical spool 9b medial recess shapes
Circularize oil groove, it is relative in the side wall on the cylinder shape valve 9a to be provided with the first feedback oil duct interface 9d and the second feedback oil duct
Interface 9e, the oily interface 9e homonymies of second feedback are additionally provided with oil leak hole 9f, and the valve body 9a front portions are provided with pump discharge interface 9g；
So promote valve core spring 9c mobile and when blocking the first feedback oil duct interface 9d position when the oil pressure of pump discharge fails to reach,
First pressure feedback oil duct 8a keeps connect with second pressure feedback oil duct 8b, that is to say, that first feeds back oil pocket 6 and the
Two feedback oil pockets 7 have been filled with the pressure oil from main oil gallery, and in the presence of pressure oil, the variable sliding block 1 is around rotating dog 2
Rotate, so as to realize that the first order of lubricating oil pump becomes discharge capacity output, and it is constantly improve with engine speed, arranged in one-level
On the basis of amount change, the oil extraction pressure of pump discharge is still constantly improve, now because the oil pressure of main oil gallery is also very high, if first
There is pressure oil effect simultaneously with the second feedback cavity, can not realize that the change of oil pressure regulation adapts to the change of demand for lubricating oil（Become
Amount sliding block will act very frequent）, thus inventor feeds back oil pocket 7 in the secondary variable stage according to above-mentioned characteristic by second
The state of pressure release is just designed to, it is then by the way that second pressure feedback oil duct 8b is connected with oil leak hole 9f that it, which is realized,；Need to illustrate
, the design parameter of the flex point of pumpage change curve, slope directly with the part such as switching control valve 9, variable spring 3 ceases
Correlation, to obtain superior technique effect, those skilled in the art need to obtain with reference to relevant design guiding book and experience,
But this point is not inventive point place of the present utility model, is not just repeated herein.
It needs to be emphasized that realize that the method that two level becomes discharge capacity there are many kinds, except the group mentioned in background technology
Close outside valve control, the method also just like controls such as magnetic valves, but for taking knot of which kind of method more preferably there has been no unification
By, great advantage of the present utility model is then that its simple in construction, switch control logic accesses without electronic equipment, in addition, its
The structure of switching control valve is simultaneously uncomplicated, thus is substantially not present the failure problems of switching.
Above-described embodiment is the preferable implementation of the utility model, and in addition, the utility model can be with other sides
Formula is realized, any on the premise of the technical program design is not departed from obviously to replace in protection model of the present utility model
Within enclosing.
In order to allow those of ordinary skill in the art more easily understand the utility model relative to prior art improvement it
Place, some accompanying drawings of the present utility model and description have been simplified, and for the sake of clarity, present specification is omitted one
A little other elements, those of ordinary skill in the art should be aware that these elements omitted also may make up in of the present utility model
Hold.
Claims (2)
1. a kind of two level displacement-variable oil pump, including the pump housing, the variable sliding block in the pump housing（1）, rotating dog（2）, variable
Spring（3）And internal rotor（4）, the variable sliding block（1）It is provided with spring lock block（5）, the variable sliding block（1）Set between the pump housing
There is first pressure feedback cavity（6）With second pressure feedback cavity（7）, the first pressure feedback cavity（6）With second pressure feedback cavity
（7）Located at rotating dog（2）The same side, it is characterised in that：The first pressure feedback cavity（6）With second pressure feedback cavity（7）Point
Lian Tong not the first feedback oil duct（8a）With the second feedback oil duct（8b）, the first feedback oil duct（8a）Connected with main oil gallery, institute
State and a switching control valve is additionally provided with the pump housing（9）, the switching control valve（9）Including valve body（9a）, located at valve body（9a）It is interior and
The valve element that can be moved left and right（9b）And valve core spring（9c）, the valve body（9a）It is provided with the first feedback oil duct interface（9d）,
Two feedback oil duct interfaces（9e）, oil leak hole（9f）With pump discharge interface（9g）, the first feedback oil duct interface（9d）Connection the
One feedback oil duct（8a）, the second feedback oil duct interface（9e）The feedback oil duct of connection second（8b）, the pump discharge interface
（9g）Connect machine oil pump discharge, when machine oil pump discharge oil liquid pressure is not up to setting value, the valve element（9b）Keep first anti-
Present oil duct interface（9d）With the second feedback oil duct interface（9e）Connection, when pump discharge oil liquid pressure meets or exceeds rated value
When, the valve element（9b）Being moved to the left makes the first feedback oil duct（8a）With the second feedback oil duct（8b）Disconnect, while the second feedback
Oil duct（8b）Holding and oil leak hole（9f）Connect simultaneously pressure release.
A kind of 2. two level displacement-variable oil pump according to claim 1, it is characterised in that：The switching control valve includes
Hollow cylinder shape valve（9a）, located at valve body（9a）Interior cylindrical spool（9b）And valve core spring（9c）, the cylinder
Valve element（9b）Medial recess forms annular oil groove, the valve body（9a）Side wall on relative be provided with the first feedback oil duct interface（9d）
With the second feedback oil duct interface（9e）, the second feedback oil duct interface（9e）Side is additionally provided with oil leak hole（9f）, the valve body
（9a）Front portion is provided with pump discharge interface（9g）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721151339.7U CN207131461U (en) | 2017-09-09 | 2017-09-09 | A kind of two level displacement-variable oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721151339.7U CN207131461U (en) | 2017-09-09 | 2017-09-09 | A kind of two level displacement-variable oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207131461U true CN207131461U (en) | 2018-03-23 |
Family
ID=61637678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721151339.7U Active CN207131461U (en) | 2017-09-09 | 2017-09-09 | A kind of two level displacement-variable oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207131461U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420149A (en) * | 2017-09-09 | 2017-12-01 | 湖南机油泵股份有限公司 | A kind of two level displacement-variable oil 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 |
-
2017
- 2017-09-09 CN CN201721151339.7U patent/CN207131461U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420149A (en) * | 2017-09-09 | 2017-12-01 | 湖南机油泵股份有限公司 | A kind of two level displacement-variable oil 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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