CN219640007U - Oil pump and vehicle - Google Patents

Abstract

The embodiment of the utility model discloses an oil pump and a vehicle; the oil pump comprises a pump body, a pump cover, a rotor mechanism and a sliding block; the pump cover is arranged on the pump body, and the pump body is in sealing connection with the pump cover; an oil inlet for oil inflow is formed in the pump body, the rotor mechanism and the sliding block are arranged in the pump body, a sealed oil cavity is formed by enclosing the rotor mechanism and the sliding block, a feedback oil cavity is formed between the pump body and the sliding block, a low-pressure oil cavity is formed on one side in the pump body, a high-pressure oil cavity is formed on the other side in the pump body, the low-pressure oil cavity is communicated with the oil inlet, and the low-pressure oil cavity and the high-pressure oil cavity are respectively communicated with the sealed oil cavity; and at least one of the sliding block and the pump cover is provided with a drainage groove, the drainage groove is positioned above the space between the sealing oil cavity and the feedback oil cavity, and the drainage groove is configured to collect lubricating oil leaked into the feedback oil cavity through the sealing oil cavity.

Description

Oil pump and vehicle

Technical Field

The utility model belongs to the technical field of automobiles, and particularly relates to an oil pump and a vehicle.

Background

The engine oil pump of the automobile engine is driven by the engine, and the oil displacement of the engine oil pump is increased in the process of increasing the rotating speed of the engine. In long-term applications, it has been found that the oil discharge amount required for the lubrication system of the engine of the automobile is not increased with the increase of the rotational speed of the engine, and in order to achieve energy saving and emission reduction, the oil discharge amount of the oil pump is made to correspond to the oil discharge amount required for the lubrication system of the engine, and thus the oil discharge amount of the oil pump needs to be controlled, so that a variable-displacement oil pump with a supercharging variable has been produced.

The existing variable displacement oil pump has the problems that the instantaneous oil pressure of the oil pump is high, the oil pressure pulsation is high, and the NVH of the oil pump is easy to cause. Meanwhile, the problem of end face clearance between a high-pressure oil cavity and a feedback oil cavity of the oil pump can cause that when the oil pump is at high oil temperature, a large amount of oil in the high-pressure oil cavity enters the feedback oil cavity due to low oil viscosity, so that feedback regulation abnormality of the oil pump can be caused, and the engine can be damaged finally.

Disclosure of Invention

The utility model aims to provide an oil pump and a vehicle, which can solve the problems that the instantaneous oil pressure is high and the engine oil in a high-pressure oil cavity is easy to enter a feedback oil cavity in the operation of the oil pump.

According to a first aspect of the present utility model, there is provided an oil pump. The oil pump comprises a pump body, a pump cover, a rotor mechanism and a sliding block;

the pump cover is arranged on the pump body, and the pump body is in sealing connection with the pump cover;

an oil inlet for oil inflow is formed in the pump body, the rotor mechanism and the sliding block are arranged in the pump body, a sealed oil cavity is formed by enclosing the rotor mechanism and the sliding block, a feedback oil cavity is formed between the pump body and the sliding block, a low-pressure oil cavity is formed on one side in the pump body, a high-pressure oil cavity is formed on the other side in the pump body, the low-pressure oil cavity is communicated with the oil inlet, and the low-pressure oil cavity and the high-pressure oil cavity are respectively communicated with the sealed oil cavity;

and at least one of the sliding block and the pump cover is provided with a drainage groove, the drainage groove is positioned above the space between the sealing oil cavity and the feedback oil cavity, and the drainage groove is configured to collect lubricating oil leaked to the feedback oil cavity through the sealing oil cavity.

Optionally, an oil inlet end of the high-pressure oil cavity is provided with a load discharging groove, and the load discharging groove is communicated with the high-pressure oil cavity.

Optionally, the width of the end, away from the high-pressure oil cavity, of the load discharging groove to the end, communicated with the high-pressure oil cavity, of the load discharging groove is gradually increased.

Optionally, the load-discharging groove is located at one side of the oil inlet end of the high-pressure oil cavity and faces the low-pressure oil cavity.

Optionally, the width of the end, away from the high-pressure oil cavity, of the load discharging groove is smaller than the width of the oil inlet end of the high-pressure oil cavity.

Optionally, the drainage groove is communicated with the low-pressure oil cavity.

Optionally, the sliding block is in an annular structure, and the drainage groove is arranged on one side of the end face of the sliding block and has a set width along the width direction of the end face of the sliding block.

Optionally, the feedback oil cavity is communicated with a feedback oil duct of the engine and is used for introducing high-pressure oil in the engine.

Optionally, the rotor mechanism comprises a rotor shaft, a rotor, a plurality of blades, and a blade ring;

the rotor is sleeved on the rotor shaft, a plurality of mounting holes are formed in the rotor in the radial direction, and the plurality of blades are respectively embedded into the plurality of mounting holes, wherein the blades and the mounting holes are arranged in a one-to-one correspondence manner, and the rotor and the plurality of blades are enclosed to form the sealed oil cavity;

the blade ring is sleeved on the rotor shaft;

one end of each blade is connected to the blade ring, and one end of each blade, which is far away from the blade ring, abuts against the outer wall of the sliding block.

Optionally, a rotating pin is movably connected to the sliding block, a blocking arm is arranged on the sliding block and extends outwards, and the blocking arm is abutted to one end of the sliding block spring;

when feedback oil output by the feedback oil cavity pushes the sliding block to move by taking the rotating pin as an axis, the blocking arm can push and compress the sliding block spring, so that the eccentricity of the sliding block relative to the rotor is changed, and the displacement of the engine oil pump is adjusted.

According to a second aspect of the present utility model, a vehicle is provided. The vehicle includes:

the oil pump of any one of the first aspects.

The utility model has the beneficial effects that:

according to the oil pump scheme provided by the embodiment of the utility model, the drainage groove is arranged on the sliding block and/or the pump cover of the oil pump, so that abnormal variable adjustment of the oil pump caused by the inflow of the engine oil in the high-pressure oil cavity into the feedback oil cavity in the high-oil temperature is prevented, the stability of variable adjustment of the oil pump can be improved, and the service life of an engine is prolonged.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

Fig. 1 is a schematic structural diagram of an oil pump according to an embodiment of the present utility model;

FIG. 2 is a second schematic diagram of an oil pump according to an embodiment of the present utility model;

FIG. 3 is a third schematic diagram of an oil pump according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a pump cover of an oil pump according to an embodiment of the present utility model.

Reference numerals illustrate:

1. a pump body; 2. a pump cover; 3. a rotor mechanism; 301. a rotor shaft; 302. a rotor; 303. a blade; 304. a blade ring; 4. a slide block; 401. a blocking arm; 5. a feedback oil chamber; 6. a low pressure oil chamber; 7. a high-pressure oil chamber; 701. an oil inlet end; 8. a discharging groove; 9. drainage grooves; 10. a rotation pin; 11. sealing the oil cavity; 12. a slider spring; 13. and a sealing block.

Detailed Description

Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

The following describes an oil pump and a vehicle according to embodiments of the present utility model in detail with reference to fig. 1 to 4.

According to an embodiment of the present utility model, there is provided an oil pump, the structure of which can be seen in fig. 1 to 3, which is a variable displacement oil pump, the oil discharge amount of which is positively correlated with the rotation speed of an engine. That is, the oil pump can reasonably adjust the oil discharge amount according to the rotation speed of the engine.

Referring to fig. 1 to 4, an oil pump provided by an embodiment of the present utility model includes: pump body 1, pump cover 2, rotor mechanism 3 and slider 4. Referring to fig. 4, the pump cover 2 is disposed on the pump body 1, and the pump body 1 is hermetically connected to the pump cover 2.

An oil inlet into which engine oil flows is formed in the pump body 1. The rotor mechanism 3 and the sliding block 4 are both arranged in the pump body 1, and the rotor mechanism 3 and the sliding block 4 are enclosed to form a sealed oil cavity 11, see fig. 1. A feedback oil cavity 5 is formed between the pump body 1 and the sliding block 4, a low-pressure oil cavity 6 is formed on one side in the pump body 1, a high-pressure oil cavity 7 is formed on the other side, the low-pressure oil cavity 6 is communicated with the oil inlet, and the low-pressure oil cavity 6 and the high-pressure oil cavity 7 are respectively communicated with the sealed oil cavity 11; at least one of the slider 4 and the pump cover 2 is provided with a drainage groove 9, and the drainage groove 9 is located above between the seal oil chamber 11 and the feedback oil chamber 5, and the drainage groove 9 is configured to collect lubricating oil leaked to the feedback oil chamber 5 through the seal oil chamber 11.

Wherein, as shown in fig. 1 and 2, the sliding block 4 is in a ring shape as a whole, and the rotor mechanism 3 is arranged inside the sliding block 4.

According to the oil pump scheme provided by the embodiment of the utility model, during operation, engine oil enters the low-pressure oil cavity 6 from the oil inlet and then enters the sealed oil cavity 11 formed by enclosing between the rotor mechanism 3 and the sliding block 4, and the rotor mechanism compresses and conveys the engine oil into the high-pressure oil cavity 7 along with the rotation of the rotor mechanism 3, and the engine oil is output outwards from the high-pressure oil cavity 7. The feedback oil cavity 5 is communicated with a feedback oil duct of the engine and is used for introducing high-pressure oil in the engine, and the position of the sliding block 4 is adjusted according to the introduced high-pressure oil pressure, so that the flow of the engine oil output is changed.

When the oil pump is assembled, the pump cover 2 is covered on the pump body 1, the sliding block 4 is positioned between the pump cover 2 and the pump body 1, the sliding block 4 and the pump cover 2 are abutted against each other, a gap is inevitably formed between the abutting joint surfaces of the sliding block 4 and the pump cover 2, and in the related art, during the period of oil compression of the rotor mechanism 3, oil is easy to leak from the sealed oil cavity 11 or the high-pressure oil cavity 7 into the feedback oil cavity 5 positioned between the sliding block 4 and the pump body 1 through the gap, so that the input oil pressure of the feedback oil cavity 5 is not high-pressure oil in the engine, and the feedback regulation of the oil pump is abnormal, thereby causing the abnormal pressure of the oil, and finally possibly damaging the engine.

According to the oil pump scheme provided by the embodiment of the utility model, the guide groove 9 is designed on the sliding block 4 and/or the pump cover in the oil pump, so that abnormal variable adjustment of the oil pump caused by the inflow of the engine oil in the high-pressure oil cavity 7 into the feedback oil cavity 5 in the high-oil temperature is prevented, and the stability of variable adjustment of the oil pump can be improved, so that the service life of an engine is prolonged.

Specifically, in the technical scheme of the utility model, by arranging the drainage groove 9, the drainage groove 9 can collect lubricating oil (engine oil) permeated out through the sealed oil cavity 11, and as the sealed oil cavity 11 is communicated with the high-pressure oil cavity 7, the lubricating oil can be prevented from penetrating into the feedback oil cavity 5 due to larger oil pressure in the compression process of the high-pressure oil cavity 7.

Referring to fig. 4, the pump cover 2 is disposed on the pump body 1, and the pump cover 2 is tightly connected with the pump body 1, so that a closed accommodating cavity can be formed by enclosing the pump cover 2 and the pump body 1. The pump cover 2 and the pump body 1 form a shell of the oil pump.

In order to avoid that high-pressure oil enters the feedback oil cavity 5 to cause abnormal regulation of the feedback oil at high temperature, a drainage groove 9 is designed on the sliding block 4 and/or the pump cover 2, so that oil leaked through the sealed oil cavity 11 can flow into the drainage groove 9 without directly entering the high-pressure oil cavity 7.

In some examples of the present utility model, referring to fig. 2 and 3, the oil inlet end 701 of the high-pressure oil chamber 7 is provided with a relief groove 8, and the relief groove 8 communicates with the high-pressure oil chamber 7.

Referring to fig. 2, the rotor mechanism 3 and the slider 4 form a sealed oil chamber. When the oil pump runs clockwise, the volume of the sealed oil cavity is gradually increased from one side of the low-pressure oil cavity 6 and is used for sucking engine oil, then the volume is gradually reduced, and engine oil is compressed, so that high-pressure oil is formed, at the moment, the engine oil pressure is higher, and when the oil pump runs to the high-pressure oil cavity 7, instantaneous oil pressure pulsation is formed, so that the bad phenomenon of abnormal sound production is caused. In this regard, in the technical solution provided in the embodiment of the present utility model, a load-releasing groove 8 is designed at the oil inlet end 701 of the high pressure oil chamber 7 of the pump body 1, and the load-releasing groove 8 can enable the engine oil to flow into the high pressure oil chamber 7 in a manner of gradually increasing from small to large in flow, so as to realize early pressure release, which is beneficial to reducing the oil pressure pulsation.

Specifically, a special relief groove 8 is arranged at the oil inlet end 701 of the high-pressure oil cavity 7 of the oil pump, and the flow of the oil entering the high-pressure oil cavity 7 can be gradually increased due to the existence of the relief groove 8, so that pressure can be relieved in advance, which is beneficial to reducing the instantaneous pulsation of the oil pump and improving the NVH of the oil pump.

In some examples of the present utility model, referring to fig. 2 and 3, the width of the relief groove 8 from the end of the high pressure oil chamber 7 to the end of the relief groove 8 communicating with the high pressure oil chamber 7 increases gradually.

Referring to the relief groove 8 shown in fig. 2 and 3, it can be seen that one end of the relief groove 8 is connected to the oil inlet end 701 of the high-pressure oil chamber 7, which end may be defined as a first end, and the other end of the relief groove 8 is remote from the oil inlet end 701 of the high-pressure oil chamber 7 and may be defined as a second end, the width dimension of which is designed to be smaller than that of the first end, which is herein the oil inlet end, which is the oil outlet end. On this basis, the relief groove 8 forms a trend of gradually increasing the width from the oil inlet end to the oil outlet end, and the design can control the condition of the flow of the engine oil entering the high-pressure oil cavity 7, so that the flow of the engine oil entering the high-pressure oil cavity 7 is not excessively large instantaneously, but is gradually increased. The advantage is that the pressure release can be realized in advance, so that the instantaneous pulsation of the oil pump can be reduced, and the NVH of the oil pump can be improved.

In some examples of the utility model, referring to fig. 2 and 3, the relief groove 8 is located at one side of the oil inlet end 701 of the high pressure oil chamber 7 and faces the low pressure oil chamber 6.

In the above example of the present utility model, the relief groove 8 is provided at one side of the oil inlet end 701 of the high-pressure oil chamber 7 and is close to the low-pressure oil chamber 6, so that the distance between the low-pressure oil chamber 6 and the relief groove 8 is small, and the oil path therebetween can be shortened.

Of course, the relief groove 8 may be flexibly disposed at a suitable position of the oil inlet end 701 of the high-pressure oil chamber 7 according to specific needs, so as to replace the solution in the above example.

In some examples of the present utility model, referring to fig. 2 and 3, the width of the end of the relief groove 8 away from the high-pressure oil chamber 7 is smaller than the width of the oil inlet end 701 of the high-pressure oil chamber 7.

This causes the relief groove 8 to be shaped in a manner that the width gradually increases so that the flow rate of the oil into the high-pressure oil chamber 7 is gradually increased, not instantaneously increased.

In some examples of the utility model, the drainage groove 9 communicates with the low-pressure oil chamber 6.

That is, the oil pump scheme provided by the embodiment of the utility model also designs that the engine oil contained in the drainage groove 9 can directly flow back to the low-pressure oil cavity 6 so as to be convenient for subsequent recycling.

In some examples of the present utility model, referring to fig. 1 and 2, the slider 4 has a ring-shaped structure, and the drainage groove 9 is disposed on one side of the end surface of the slider 4 and has a set width along the width direction of the end surface of the slider 4.

The drainage groove 9 has a certain width in the width direction of the slider 4, and the width size can be adjusted according to specific needs, but the problems of strength and the like of the slider 4 after slotting are considered.

Furthermore, the groove shape of the drainage groove 9 can be adapted to the contour shape of the slide 4. The drain groove 9 needs to communicate with the low pressure oil chamber 6 in order to deliver oil into the low pressure oil chamber 6.

By arranging the drainage groove 9 on the sliding block 4 and/or the pump cover 2, the situation that the instantaneous oil pressure of the oil pump is high can be eliminated, so that the NVH difference of the oil pump caused by higher oil pressure pulsation is well avoided.

In some examples of the present utility model, the feedback oil chamber 5 communicates with a feedback oil passage of the engine to introduce high-pressure oil inside the engine.

In some examples of the utility model, referring to fig. 1 and 2, the rotor mechanism 3 includes a rotor shaft 301, a rotor 302, a plurality of blades 303, and a blade ring 304. The rotor 302 is sleeved on the rotor shaft 301, a plurality of mounting holes are formed in the rotor 302 along the radial direction, and the plurality of blades 303 are respectively embedded into the plurality of mounting holes, wherein the blades 303 are arranged in a one-to-one correspondence with the mounting holes; the rotor 302 encloses the plurality of vanes 303 to form the sealed oil chamber 11. The blade ring 304 is sleeved on the rotor shaft 301. One end of each blade 303 is connected to the blade ring 304, and one end of each blade remote from the blade ring 304 abuts against the outer wall of the slider 4.

With continued reference to fig. 1 and 2, the slider 4 is movably connected with a rotation pin 10, a blocking arm 401 is disposed on the slider 4 and extends outwards, and the blocking arm 401 abuts against one end of the slider spring 12; when the feedback oil output from the feedback oil cavity 5 pushes the sliding block 4 to move around the rotation pin 10 as the axis, the blocking arm 401 can push and compress the sliding block spring 12, so that the eccentric distance of the sliding block 4 relative to the rotor 302 is changed, and the displacement of the engine oil pump is adjusted.

Specifically, referring to fig. 1, the oil pump provided in the embodiment of the present utility model mainly includes 7 oil chambers as shown in fig. 1, that is, the above-mentioned sealed oil chamber 11, which is formed by a plurality of oil chambers formed by a slider 4, a rotor mechanism 3, etc., and is capable of pumping oil by rotating clockwise around a rotor shaft 301. Wherein, a sealing block 13 is designed to seal a feedback oil cavity 5 formed by a pump body 1 and a sliding block 4 of the oil pump. When the feedback oil pushes the sliding block 4 to move around the rotating pin 10, the blocking arm 401 on the sliding block 4 pushes and compresses the sliding block spring 12, so that the eccentricity of the sliding block 4 relative to the rotor 302 is changed, and the displacement of the oil pump is changed.

According to another aspect of the present utility model, there is also provided a vehicle including the oil pump as described above.

Wherein the vehicle may be various forms of automobiles, which are not limited in the present utility model.

The specific implementation manner of the vehicle according to the embodiment of the present utility model may refer to the above embodiment of the oil pump, so at least the technical solution of the above embodiment has all the beneficial effects, which are not described herein in detail.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims (11)

1. The oil pump is characterized by comprising a pump body (1), a pump cover (2), a rotor mechanism (3) and a sliding block (4);

the pump cover (2) is arranged on the pump body (1), and the pump body (1) is in sealing connection with the pump cover (2);

an oil inlet for oil inflow is formed in the pump body (1), the rotor mechanism (3) and the sliding block (4) are both arranged in the pump body (1), the rotor mechanism (3) and the sliding block (4) are enclosed to form a sealed oil cavity (11), a feedback oil cavity (5) is formed between the pump body (1) and the sliding block (4), a low-pressure oil cavity (6) is formed on one side in the pump body (1), a high-pressure oil cavity (7) is formed on the other side in the pump body (1), the low-pressure oil cavity (6) is communicated with the oil inlet, and the low-pressure oil cavity (6) and the high-pressure oil cavity (7) are respectively communicated with the sealed oil cavity (11);

at least one of the sliding block (4) and the pump cover (2) is provided with a drainage groove (9), and the drainage groove (9) is positioned above between the sealing oil cavity (11) and the feedback oil cavity (5), and the drainage groove (9) is configured to collect lubricating oil leaked to the feedback oil cavity (5) through the sealing oil cavity (11).

2. The oil pump according to claim 1, characterized in that an oil inlet end (701) of the high-pressure oil chamber (7) is provided with a relief groove (8), and the relief groove (8) communicates with the high-pressure oil chamber (7).

3. The oil pump according to claim 2, characterized in that the width of the relief groove (8) gradually increases from an end of the relief groove (8) distant from the high-pressure oil chamber (7) to an end of the relief groove (8) communicating with the high-pressure oil chamber (7).

4. The oil pump according to claim 2, characterized in that the relief groove (8) is located on the side of the oil inlet end (701) of the high-pressure oil chamber (7) and is directed towards the low-pressure oil chamber (6).

5. The oil pump according to claim 2, characterized in that the width of the end of the relief groove (8) remote from the high-pressure oil chamber (7) is smaller than the width of the oil inlet end (701) of the high-pressure oil chamber (7).

6. The oil pump according to claim 1, characterized in that the drain groove (9) communicates with the low-pressure oil chamber (6).

7. The oil pump according to claim 1, wherein the slider (4) has an annular structure, and the drainage groove (9) is provided on one side of the end face of the slider (4) and has a set width in the width direction of the end face of the slider (4).

8. The oil pump according to claim 1, characterized in that the feedback oil chamber (5) communicates with a feedback oil passage of the engine for introducing high-pressure oil inside the engine.

9. The oil pump according to claim 1, characterized in that the rotor mechanism (3) comprises a rotor shaft (301), a rotor (302), a plurality of vanes (303) and a vane ring (304);

the rotor (302) is sleeved on the rotor shaft (301), a plurality of mounting holes are formed in the rotor (302) in the radial direction, the plurality of blades (303) are respectively embedded into the plurality of mounting holes, the blades (303) and the mounting holes are arranged in a one-to-one correspondence manner, and the rotor (302) and the plurality of blades (303) enclose to form the sealed oil cavity (11);

the blade ring (304) is sleeved on the rotor shaft (301);

one end of each blade (303) is connected to the blade ring (304), and one end of each blade (303) away from the blade ring (304) abuts against the outer wall of the slider (4).

10. The oil pump according to claim 9, characterized in that the sliding block (4) is movably connected with a rotating pin (10), a baffle arm (401) is arranged on the sliding block (4) and extends outwards, and the baffle arm (401) is abutted with one end of a sliding block spring (12);

when feedback oil output by the feedback oil cavity (5) pushes the sliding block (4) to move by taking the rotating pin (10) as an axis, the blocking arm (401) can push and compress the sliding block spring (12) so as to change the eccentric distance of the sliding block (4) relative to the rotor (302) and adjust the displacement of the engine oil pump.

11. A vehicle, characterized by comprising:

the oil pump according to any one of claims 1 to 10.