CN114576203A - Oil pump and engine - Google Patents

Abstract

The application discloses oil pump and engine belongs to automobile engine technical field. The oil pump comprises a pump body; the pump body is internally provided with a communicating passage, a first oil path and a second oil path, a first oil inlet, a first oil outlet, a second oil inlet, a second oil outlet and a third oil outlet are arranged on the wall of the pump body, the first oil inlet is communicated with the first oil outlet through the communicating passage, the second oil inlet is communicated with one end of the first oil path and one end of the second oil path, the second oil outlet is communicated with the other end of the first oil path, and the third oil outlet is communicated with the other end of the second oil path; the second oil outlet and the third oil outlet are positioned on the first side of the pump body and are oppositely arranged along the diagonal direction of the pump body; the first oil inlet, the first oil outlet and the second oil inlet are located on the second side of the pump body, and the first side is opposite to the second side. The oil pump replaces the mode of making up the pressure loss of the engine oil in the oil duct by improving the flowing pressure of the engine oil in the related technology, and is beneficial to reducing the energy consumption of the oil pump.

Description

Oil pump and engine

Technical Field

The application relates to the technical field of automobile engines, in particular to an oil pump and an engine.

Background

The oil pump is an important component of a vehicle engine and is used for pressurizing oil in an oil pan and then sending the oil to the engine so as to lubricate all main moving parts of the engine. At high engine speeds, the amount of oil required by the engine may also increase accordingly. Because the oil pump is internally provided with an oil duct, and the pipe diameter of the oil duct is constant, when the flow velocity of the engine oil in the oil duct is increased, the pressure loss of the engine oil in the oil duct is correspondingly increased. In the related art, it is common to compensate for the pressure loss of the oil in the oil passage by increasing the oil flow pressure. However, this approach tends to increase the power consumption of the oil pump.

Disclosure of Invention

In view of this, the present application provides an oil pump and an engine, which replace the manner of compensating for the pressure loss of the oil in the oil passage by increasing the flowing pressure of the oil in the related art, and are beneficial to reducing the energy consumption of the oil pump.

Specifically, the method comprises the following technical scheme:

in a first aspect, an embodiment of the present application provides an oil pump, where the oil pump includes a pump body;

the pump body is internally provided with a communication passage, a first oil path and a second oil path, a first oil inlet, a first oil outlet, a second oil inlet, a second oil outlet and a third oil outlet are arranged on the wall of the pump body, the first oil inlet is communicated with the first oil outlet through the communication passage, the second oil inlet is communicated with one end of the first oil path and one end of the second oil path, the second oil outlet is communicated with the other end of the first oil path, and the third oil outlet is communicated with the other end of the second oil path;

the second oil outlet and the third oil outlet are positioned on the first side of the pump body and are oppositely arranged along the diagonal direction of the pump body; the first oil inlet, the first oil outlet and the second oil inlet are located on a second side of the pump body, and the first side is opposite to the second side.

In some embodiments, the second oil passage includes a first sub oil passage, a second sub oil passage, and a third sub oil passage;

the first sub oil path, the second sub oil path and the third oil path are communicated in sequence, the second oil inlet is communicated with the first oil path, and the second oil outlet is communicated with the third oil path;

the axis of the first sub oil path and the axis of the first oil path are located on the same plane, the axis of the second sub oil path is perpendicular to the plane where the axis of the first sub oil path and the axis of the first oil path are located, and the axis of the third sub oil path is parallel to the axis of the first oil path.

In some embodiments, the pump body further has a first seal groove and a second seal groove, the first seal groove being annularly disposed at a periphery of the first oil outlet for cooperation with a first seal; the second sealing groove is annularly arranged on the periphery of the second oil inlet and used for being matched with a second sealing piece.

In some embodiments, the oil pump further includes a pumping assembly located within the communication passage for drawing oil into the pump body.

In some embodiments, the oil pump further includes a filter screen disposed at the first oil inlet for filtering the oil entering the first oil inlet.

In some embodiments, the oil pump further includes a pressure control unit provided on the second oil passage or the first oil passage.

In some embodiments, the oil pump further comprises a relief valve and a plug;

the pump body is also provided with a pressure relief pipeline, one end of the pressure relief pipeline is communicated with the communicating passage, and the other end of the pressure relief pipeline is communicated with the outside; the safety valve is positioned in the pressure relief pipeline, and the end cap plugs one end of the pressure relief pipeline communicated with the outside.

In some embodiments, the oil pump further comprises a first locating sleeve and a second locating sleeve;

the first positioning sleeve is positioned on the first side of the pump body, extends towards the direction far away from the first side, and is communicated with the second oil outlet; the second positioning sleeve is located on the first side of the pump body, extends towards the direction far away from the first side, and is communicated with the third oil outlet.

In a second aspect, an embodiment of the present application further provides an engine, where the engine includes the oil pump and the cylinder block according to the first aspect, the first oil path is communicated with the cylinder block main oil gallery of the cylinder block, and the second oil path is communicated with the cylinder head main oil gallery.

In some embodiments, the engine further comprises a filter, wherein the liquid inlet end of the filter is connected with the first oil outlet, and the liquid outlet end of the filter is connected with the second oil inlet.

The oil pump provided by the embodiment of the application can enable the engine oil to flow in through the first oil inlet located on the pump wall of the pump body and then enter the communication passage in the pump body when the engine runs at a high speed, the oil pump is used for pumping the oil to the first oil outlet of the pump body through the pump pressure assembly arranged in the communication passage, the oil pump is provided with external filtering pipelines at the first oil outlet and the second oil inlet, the engine oil flowing out through the first oil outlet can be filtered, the filtered engine oil flows into the pump body again through the second oil inlet and enters the first oil path and the second oil path which are both connected with the second oil inlet through the second oil inlet, and after passing through the first oil path, the engine oil can flow out of the pump body through the third oil outlet and enter the main oil path of the cylinder body; after passing through the second oil way, the oil can flow out of the pump body through the second oil outlet and enter the cylinder cover main oil way, so that the oil can enter the engine main oil way in two ways. Because the oil path branch design is carried out in the oil pump, namely the first oil path and the second oil path are designed, the cross section area of the oil path is increased, the flow speed of the engine oil in the oil path is reduced, and the pressure loss of the engine oil in the oil path is reduced, the mode that the pressure loss of the engine oil in the oil path is compensated by improving the flowing pressure of the engine oil in the related technology is replaced, and the energy consumption of the oil pump is favorably reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic diagram of an oil pump according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of the oil pump shown in FIG. 1 at another perspective;

FIG. 3 is a schematic diagram of an oil circuit according to an embodiment of the present disclosure;

FIG. 4 is a partial cross-sectional view of a communication passage in an oil pump according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of the communication path shown in FIG. 4 from another perspective;

fig. 6 is a schematic structural diagram of a brake assembly according to an embodiment of the present application.

The reference numerals in the figures are denoted respectively by:

1. a pump body; 101. a first oil inlet; 102. a first oil outlet; 103. a second oil inlet; 104. a second oil outlet; 105. a third oil outlet; 2. a communication passage; 21. a first sub communication path; 22. a second sub communication path; 23. a third sub communication path; 3. a first oil passage; 4. a second oil passage; 401. a first sub oil passage; 402. a second sub oil passage; 403. a third sub oil passage; 5. a pumping assembly; 501. a pump shaft; 502. a blade; 503. a rotor; 504. an adjustment ring; 61. a first seal groove; 62. a second seal groove; 7. a filter screen cover; 8. filtering with a screen; 9. a pressure control unit; 10. a safety valve; 11. a plug; 12. a pressure relief pipeline; 13. an oil duct plug; 14. a first positioning sleeve; 15. and a second positioning sleeve.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Reference to orientation terms in the embodiments of the present application, such as "upper," "lower," "side," and the like, are generally based on the relative relationship of the orientations shown in fig. 1, and these orientation terms are used merely for clarity of description of the structures and the relationship between the structures, and are not used for describing absolute orientations. When the product is placed in different postures, the orientation may be changed, for example, "up" and "down" may be interchanged.

Unless defined otherwise, all technical terms used in the examples of the present application have the same meaning as commonly understood by one of ordinary skill in the art. Some technical terms appearing in the embodiments of the present application are explained below.

In the embodiments of the present application, reference to "engine oil" generally refers to lubricating oil, which can perform the functions of lubrication, cleaning, cooling, sealing, wear reduction, rust prevention, corrosion prevention and the like on an engine.

Reference to "pressure loss" generally refers to the phenomenon of pressure drop in a fluid as it flows through a conduit due to changes in flow rate, flow resistance, shut-off action, and the like.

The term "machining" generally refers to a process of changing the outer dimensions or properties of a workpiece by a mechanical device, and machining is classified into cutting and pressing according to the difference in machining modes.

In order to make the technical solutions and advantages of the present application clearer, the following will describe the embodiments of the present application in further detail with reference to the accompanying drawings.

Parts on the engine, including a crankshaft, a connecting rod, a camshaft, a supercharger, a hydraulic tensioner, a timing phase adjuster, a chain system and the like, need a lubricating system to provide clean lubricating oil with proper temperature and pressure so as to reduce the abrasion of the parts on the engine, reduce mechanical vibration and noise and prolong the service life of the parts.

The oil pump is an important component of a vehicle lubricating system and is used for pressurizing oil in an oil pan of an engine and then sending the pressurized oil into the engine so as to lubricate each main moving part of the engine. At high engine speeds, the amount of oil required by the engine may also increase accordingly. In the related art, the oil pump pumps out the engine oil in the engine oil pan, then the engine oil is filtered by the oil filter, the filtered engine oil is sent into the main oil duct of the engine, and the engine oil is distributed to each part needing to be lubricated through the main oil duct.

In the related art, the pressure loss of the oil in the oil passage is usually compensated by increasing the oil flow pressure, that is, the oil flow pressure is increased to make the oil pressure value at the oil pump outlet meet the requirement. However, this approach tends to increase the power consumption of the oil pump.

In order to solve the problems in the related art, an embodiment of the present application provides an oil pump, a schematic structural diagram of which is shown in fig. 1.

Referring to fig. 1, the oil pump includes a pump body 1.

The pump body 1 is internally provided with a communication passage 2, a first oil passage 3 and a second oil passage 4, a pump wall of the pump body 1 is provided with a first oil inlet 101, a first oil outlet 102, a second oil inlet 103, a second oil outlet 104 and a third oil outlet 105, the first oil inlet 101 is communicated with the first oil outlet 102 through the communication passage 2, the second oil inlet 103 is communicated with one end of the first oil passage 3 and one end of the second oil passage 4, the second oil outlet 104 is communicated with the other end of the first oil passage 3, and the third oil outlet 105 is communicated with the other end of the second oil passage 4.

The second oil outlet 104 and the third oil outlet 105 are positioned on the first side of the pump body 1 and are oppositely arranged along the diagonal direction of the pump body 1; the first oil inlet 101, the first oil outlet 102 and the second oil inlet 103 are located on a second side of the pump body 1, and the first side and the second side are opposite.

In the oil pump provided by the embodiment of the application, when an engine runs at a high speed, oil can flow in through the first oil inlet 101 located on the pump wall of the pump body 1 and then enter the communicating passage 2 in the pump body 1, the oil is pumped to the first oil outlet 102 of the pump body 1 through the pumping pressure assembly 5 arranged in the communicating passage 2, the oil pump is provided with external filtering pipelines at the first oil outlet 102 and the second oil inlet 103, the oil flowing out through the first oil outlet 102 can be filtered, the filtered oil flows into the pump body 1 again through the second oil inlet 103 and enters the first oil path 3 and the second oil path 4 which are both connected with the second oil inlet 103 through the second oil inlet 103, and after passing through the first oil path 3, the oil can flow out of the pump body 1 through the third oil outlet 105 and enter the main oil path of the cylinder body; after passing through the second oil path 4, the oil can flow out of the pump body 1 through the second oil outlet 104 and enter the cylinder head main oil path, so that the oil can enter the engine main oil path in two paths.

Because the oil path branch design is carried out in the oil pump, namely the first oil path 3 and the second oil path 4 are designed, the cross section area of the oil path is increased, the flow speed of the engine oil in the oil path is reduced, and the pressure loss of the engine oil in the oil path is further reduced, and the mode that the pressure loss of the engine oil in the oil path is compensated by improving the flowing pressure of the engine oil in the related technology is replaced, so that the energy consumption of the oil pump is reduced.

With respect to the first oil inlet 101, referring to fig. 2, the engine oil can flow into the interior of the engine oil pump through the first oil inlet 101.

When the oil suction device is used, the first oil inlet 101 faces the bottom of an engine oil pan, the engine oil in the oil pan can be directly sucked into the engine through the first oil inlet 101, a pipeline does not need to be additionally arranged to stretch into the oil pan for oil suction, the length of an oil path in the oil pump is favorably shortened, and therefore the pressure loss of the engine oil in the oil path is reduced.

In some embodiments, the shape of the first oil inlet 101 includes a circle, a rectangle, a square, a pentagon, and the like. For example, referring to fig. 2, the first oil inlet 101 is circular in shape.

In some embodiments, in order to filter the oil entering the oil pump, referring to fig. 2, the oil pump further comprises a filter screen 8, and the filter screen 8 is disposed at the first oil inlet 101.

Through setting up filter screen 8 in first oil inlet 101 department, carry out coarse filtration to the machine oil that gets into first oil inlet 101, can replace and set up the machine oil collector alone in the prior art in order to realize the mode to machine oil prefilter, simplified the structure of engine, be favorable to the manufacturing of engine.

In some embodiments, the screen 8 comprises a stamped screen and a woven screen.

The screen 8 is, for example, a punched screen.

In some embodiments, the oil pump further comprises a filter cover 7, and the filter 8 is fixed to the first oil inlet 101 by the filter cover 7.

It will be appreciated that, referring to fig. 2, the strainer cover 7 has through holes therein, and the strainer 8 covers the through holes, which communicate with the first oil inlet 101.

The filter screen 8 and the filter screen cover 7 are arranged to filter the engine oil entering the first oil inlet 101, wherein the diameter of the filter screen cover 7 is slightly larger than that of the first oil inlet 101, namely, the filter screen cover 7 is in interference connection with the first oil inlet 101, the filter screen 8 is pressed tightly, and the filter screen 8 and the filter screen cover are tightly fixed on the first oil inlet 101.

In some embodiments, the shape of the through-hole includes rectangular, circular, oval, and the like.

For example, referring to fig. 2, the shape of the through-hole is rectangular.

For the first oil path 3, referring to fig. 1, the engine oil may flow into the second oil inlet 103, then may flow out of the second oil outlet 104 after passing through the first oil path 3, and then may flow into the cylinder main oil gallery.

In some embodiments, the first oil path 3 is formed in the pump body 1, that is, the first oil path 3 is formed in the pump body 1 while the pump body 1 is manufactured, so that the structure of the oil pump can be fully utilized, and pipelines in the oil pump are simplified.

For the second oil path 4, referring to fig. 1, the engine oil may flow into the second oil inlet 103, then flow out from the third oil outlet 105 through the second oil path 4, and then flow into the cylinder head main oil gallery.

Because the second oil inlet 103 is communicated with one end of the first oil path 3 and one end of the second oil path 4, the first oil path 3 and the second oil path 4 share the second oil inlet 103, which is beneficial to simplifying the pipeline structure in the oil pump.

In some embodiments, referring to fig. 3, the second oil passage 4 includes a first sub oil passage 401, a second sub oil passage 402, and a third sub oil passage 403.

The first sub oil path 401, the second sub oil path 402 and the third sub oil path 403 are sequentially communicated, the second oil inlet 103 is communicated with the first sub oil path 401, the second oil outlet 104 is communicated with the third sub oil path 403, that is, the second oil inlet 103 is communicated with one end of the first sub oil path 401, the other end of the first sub oil path 401 is communicated with one end of the second sub oil path 402, the other end of the second sub oil path 402 is communicated with one end of the third sub oil path 403, and the other end of the third sub oil path 403 is communicated with the second oil outlet 104.

By arranging the first sub oil path 401, the second sub oil path 402 and the third sub oil path 403, the engine oil can be guided from the second oil inlet 103 to the second oil outlet 104, and then enters the cylinder head main oil path.

In some embodiments, referring to fig. 3, the axis of the first sub oil passage 401 and the axis of the first oil passage 3 are located on the same plane, the axis of the second sub oil passage 402 is perpendicular to the plane where the axis of the first sub oil passage 401 and the axis of the first oil passage 3 are located, and the axis of the third sub oil passage 403 is parallel to the axis of the first oil passage 3.

So set up, simplified the degree of difficulty that the oil duct was arranged, be favorable to the lightweight design demand of engine.

In the flowing process of the engine oil, the engine oil flows in from the second oil inlet 103, then sequentially flows through the first sub oil path 401, the second sub oil path 402 and the third sub oil path 403, finally flows out of the engine oil pump through the second oil outlet 104, and flows into a cylinder head main oil gallery of the engine.

In some embodiments, the second oil path 4 is formed in the pump body 1, that is, the second oil path 4 is formed in the pump body 1 while the pump body 1 is manufactured, so that the structure of the oil pump can be fully utilized, and pipelines in the oil pump are simplified.

In some embodiments, referring to fig. 3 and 4, the pump body 1 also has a communication passage 2 therein.

Wherein, one side of the communication passage 2 is communicated with the first oil inlet 101, and the other side is communicated with the first oil outlet 102 of the pump body 1.

By providing the communication passage 2, it is possible to introduce the oil from the first oil inlet 101 to the first oil outlet 102.

In the flowing process of the engine oil, the engine oil enters the communicating passage 2 through the first oil inlet 101, flows to the first oil outlet 102 through the communicating passage 2, flows out of the first oil outlet 102, is filtered externally, and then flows back to the second oil inlet 103, enters the first oil path 3 and the second oil path 4 from the second oil inlet 103, finally leaves from the third oil outlet 105 at one end of the first oil path 3 and the second oil outlet 104 at one end of the second oil path 4, and enters the cylinder body main oil path and the cylinder cover main oil path respectively.

In some embodiments, referring to fig. 3, the communication passage 2 includes a first sub communication passage 21, a second sub communication passage 22, and a third sub communication passage 23, wherein the first sub communication passage 21, the second sub communication passage 22, and the third sub communication passage 23 communicate in sequence, and the extending direction of the first sub communication passage 21 is parallel to the extending direction of the second sub communication passage 22, and the extending direction of the third sub communication passage 23 is perpendicular to the direction of the second sub communication passage 22.

In order to fully utilize the structure of the oil pump and facilitate the processing and manufacturing of the second sub-communication passage 22, a communication hole is provided at one end of the second sub-communication passage 22, which is far away from the first oil inlet 101.

In some embodiments, referring to fig. 3, the oil pump further includes an oil passage plug 13, and the oil passage plug 13 is located at one end of the second sub communication passage 22 away from the first oil inlet 101 and used for closing the communication hole at one end of the second sub communication passage 22 away from the first oil inlet 101.

In some embodiments, gallery plugs 13 comprise threaded plugs, bowl plugs of riveted construction.

Through setting up oil duct end cap 13, can seal the one end that first oil inlet 101 was kept away from to second sub-intercommunication route 22, avoid second sub-intercommunication route 22 draining.

In some embodiments, referring to fig. 2, the pump body 1 further has a first oil outlet 102 and a second oil inlet 103 on the pump wall, that is, the first oil outlet 102 and the second oil inlet 103 are directly machined on the pump wall of the pump body 1.

The first oil outlet 102 and the second oil inlet 103 are adjacently arranged on the same side of the pump body 1, and the opening direction of the first oil outlet 102 is the same as that of the first oil inlet 101; the first oil outlet 102 is communicated with the communication passage 2, and the second oil inlet 103 is communicated with one end of the first oil passage 3 and one end of the second oil passage 4.

Because the engine oil entering the engine oil pump may contain large-particle impurities, the engine oil cannot be directly used for an engine, and the engine oil needs to be sent to a filter outside the engine oil pump for fine filtration, the first oil outlet 102 and the second oil inlet 103 are arranged on the pump wall of the pump body 1, so that the engine oil is conveniently filtered, the engine oil is provided for the engine by the engine oil pump to be clean, and smooth operation of various parts of the engine is facilitated.

Meanwhile, the first oil outlet 102 and the second oil inlet 103 are arranged on the wall of the pump, the first oil outlet 102 and the second oil inlet 103 are adjacently arranged on the same side of the pump body 1, the opening direction of the first oil outlet 102 is the same as that of the first oil inlet 101, direct butt joint of the oil pump and a filter positioned in an oil pan can be achieved, oil paths in the oil pump can be simplified, the situation that in the prior art, oil is conveyed to the filter through an oil pipe, the filtered oil is conveyed back to the oil pump through the oil pipe is avoided, the length of the oil paths in the oil pump is shortened, and accordingly pressure loss in the oil paths in the oil pump is reduced.

During the flowing process of the engine oil, the engine oil flows out of the engine oil pump from the first oil outlet 102, flows into a filter in an engine oil pan for filtering, and the filtered engine oil reenters the engine oil pump from the second oil inlet 103, so that clean engine oil without impurities is provided for the engine.

In some embodiments, referring to fig. 2, the pump wall of the pump body 1 needs to be butted against an external pipeline at the first oil outlet 102 and the second oil inlet 103, and a first sealing groove 61 and a second sealing groove 62 need to be provided on the pump body 1 to facilitate the installation and fixation of the sealing rings.

The first sealing groove 61 is arranged at the periphery of the first oil outlet 102 and is used for being matched with a first sealing element to seal the first oil outlet 102; the second seal groove 62 is disposed at the second oil inlet 103 for cooperating with a second seal to effect a seal against the second oil inlet 103.

It can be appreciated that only one first seal and one second seal are provided, as the first seal groove 61 and the second seal groove 62 are adjacent.

In some embodiments, the first seal and the second seal may each be a seal bar.

In some embodiments, referring to fig. 2, the first oil outlet 102 is circular in shape.

In some embodiments, referring to fig. 2, the second oil inlet 103 is approximately rectangular, wherein one side of the second oil inlet is semicircular, and the other side opposite to the semicircular side is arc-shaped, so that the engine oil can enter the first oil path 3 and the second oil path 4 respectively.

In some embodiments, referring to fig. 6, the oil pump further comprises a pumping assembly 5, the pumping assembly 5 being located in the communication passage 2 for sucking oil into the pump body 1.

By providing the pumping pressure assembly 5 to create a low pressure at the first oil inlet 101, oil can be drawn into the first oil inlet 101 under the influence of the pressure differential and power the flow of oil within the oil gallery.

In some embodiments, referring to fig. 6, the pumping assembly 5 includes a pump shaft 501, a plurality of blades 502, a rotor 503, and an adjusting ring 504, wherein the blades 502 are disposed in a groove of the rotor 503 and tightly fit against an inner circumferential surface of the adjusting ring 504, the rotor 503 is in interference connection with the pump shaft 501, and the rotor 503 is driven to rotate by the rotation of the pump shaft 501, so as to drive the blades 502 to rotate along the pump shaft. When the pump is in operation, because the axial center of the inner annular surface of the adjusting ring 504 and the axial center of the pump shaft 501 have a certain eccentricity, the blades 502 are in telescopic sliding motion relative to the groove of the rotor 503, and the blades 502 are attached to the inner annular surface of the adjusting ring 504 and are in circumferential sliding motion in a manner of being attached to the inner annular surface. Through the sliding of the vanes 502 and the eccentric characteristic, oil enclosed by the inner annular surface of the adjusting ring 504 and the outer annular surface of the rotor 503 between each two adjacent vanes 502 is divided into a plurality of small oil cavities, and during movement, the divided small oil cavities realize oil pumping through the area change of each small oil cavity under the eccentric action.

Briefly, the oil in the first sub-communication passage 21 in the communication passage 2, that is, the end of the pump assembly 5 close to the first oil inlet 101, is squeezed into the second sub-communication passage 22 in the communication passage 2, that is, the end of the pump assembly 5 far from the first oil outlet 102, by the pump assembly 5, so as to realize the oil pumping function.

In some embodiments, the vanes 502 are rectangular.

In some embodiments, the number of vanes is often an odd number, the number being selected based on the pump body size. For example, referring to fig. 6, the pumping assembly 5 includes seven vanes.

In some embodiments, the oil pump further includes a pressure control unit 9, and the pressure control unit 9 is provided on the second oil passage 4 or the first oil passage 3.

By providing the pressure control unit 9, it is possible to control the pressure of the engine oil in the first oil passage 3 and the second oil passage 4.

In some embodiments, referring to fig. 3, a pressure control unit 9 is provided on the second oil passage 4.

Because the pressure control unit 9 is closer to the second oil path 4, and the pressure control unit 9 is arranged on the second oil path 4, the length of a pipeline for communicating the pressure control unit 9 with the second oil path 4 can be shortened, and the arrangement of an oil pump is convenient.

In some embodiments, the pressure control unit 9 includes a full pressure adjustable variable displacement pressure control unit, a two-stage pressure variable displacement pressure control unit, a single-stage pressure variable displacement pressure control unit, a main gallery feedback pressure controlled fixed displacement pressure control unit, and the like.

In some embodiments, referring to fig. 5, the oil pump further comprises a safety valve 10 and a plug 11.

The pump body is also provided with a pressure relief pipeline 12, one end of the pressure relief pipeline 12 is communicated with the communication passage 2, and the other end of the pressure relief pipeline 12 is communicated with the outside; the safety valve 10 is positioned in the pressure relief pipeline 12, and the end, communicated with the outside, of the pressure relief pipeline 12 is plugged by the plug 11.

Through the cooperation of the safety valve 10 and the plug 11, when the engine oil pressure in the communication passage 2 is too high, the engine oil can flow out from the pressure relief pipeline 12, so that the pressure relief of the communication passage 2 is realized.

It can be understood that, when the engine encounters a special working condition, if the pressure control unit 9 does not accurately control the oil pressure or works abnormally, the oil pressure in the communication passage 2 will rapidly rise, and in order to avoid the damage of the high oil pressure to the engine, the safety valve 10 is arranged on the communication passage 2, and the pressure can be released when the oil pressure is higher than the safety design value of the oil pressure, so as to ensure that the oil pressure is maintained within the safety design value, and avoid the damage to the oil pump and the engine.

In some embodiments, referring to fig. 1, the oil pump further comprises a first locating sleeve 14 and a second locating sleeve 15.

The first positioning sleeve 14 is positioned on a first side of the pump body 1, extends towards a direction far away from the first side, and is communicated with the second oil outlet 104; the second locating sleeve 15 is located on the first side of the pump body 1, extends towards the direction away from the first side, and is communicated with the third oil outlet 105.

The first positioning sleeve 14 and the second positioning sleeve 15 are beneficial to positioning the oil pump on the engine, so that the assembly of the oil pump and the engine is facilitated; the second positioning sleeve 15 is communicated with the third oil outlet 105 and plays a role of conveying engine oil.

It will be appreciated that the engine has a first locating hole in which the first locating boss 14 is located and a second locating hole in which the second locating boss 15 is located when the oil pump is mounted to the engine.

In some embodiments, the first and second position sleeves 14, 15 are connected to the engine by interference.

In some embodiments, the diameter of the first position sleeve 14 is greater than the diameter of the second position sleeve 15.

Since the first positioning sleeve 14 is arranged at the third oil outlet 105, besides the positioning and assembling function of the first positioning sleeve, the first positioning sleeve also has the function of enabling engine oil to pass through, the second positioning sleeve 15 is only used for installing bolts, so that the engine oil pump is connected with a transmitter more tightly, and the diameter of the first positioning sleeve 14 is larger than that of the second positioning sleeve 15.

In another aspect, an embodiment of the present application provides an engine including the oil pump and the cylinder block as defined in the above embodiment, wherein the first oil passage 3 is communicated with the block oil passage of the cylinder block, and the second oil passage 4 is communicated with the head main oil passage of the cylinder block.

Based on the oil pump provided by the embodiment of the application, the engine oil in the oil pan of the engine can enter the cylinder body and the cylinder cover in two paths, namely, the engine oil flows out of the pump body through the third oil outlet 105 and enters the cylinder body oil passage after passing through the first oil passage 3, and flows out of the pump body through the second oil outlet 104 and enters the main oil passage of the cylinder cover after passing through the second oil passage 4, so that the engine cylinder body and the cylinder cover can be fully lubricated; meanwhile, as the oil way branch design is carried out in the oil pump, namely the first oil way 3 and the second oil way 4 are designed, the cross section area of the oil way is increased, the flow speed of the engine oil in the oil way is reduced, the pressure loss of the engine oil in the oil way is further reduced, and the energy consumption of the engine can be reduced.

In some embodiments, the engine further comprises a filter, wherein the liquid inlet end of the filter is connected with the first oil outlet 102, and the liquid outlet end of the filter is connected with the second oil inlet 103.

By arranging the filter, the engine oil in the engine oil pump can enter the filter through the first oil outlet 102, the filter is utilized to filter the engine oil flowing into the filter, and the filtered engine oil is sent back to the engine oil pump again through the second oil inlet 103, so that clean and impurity-free engine oil is provided for the engine oil pump.

In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the present application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (10)

1. An oil pump, characterized in that it comprises a pump body (1);

the pump body (1) is internally provided with a communication passage (2), a first oil passage (3) and a second oil passage (4), a first oil inlet (101), a first oil outlet (102), a second oil inlet (103), a second oil outlet (104) and a third oil outlet (105) are arranged on the pump wall of the pump body (1), the first oil inlet (101) is communicated with the first oil outlet (102) through the communication passage (2), the second oil inlet (103) is communicated with one end of the first oil passage (3) and one end of the second oil passage (4), the second oil outlet (104) is communicated with the other end of the first oil passage (3), and the third oil outlet (105) is communicated with the other end of the second oil passage (4);

the second oil outlet (104) and the third oil outlet (105) are positioned on a first side of the pump body (1) and are oppositely arranged along the diagonal direction of the pump body (1); the first oil inlet (101), the first oil outlet (102) and the second oil inlet (103) are located on a second side of the pump body (1), and the first side and the second side are opposite.

2. The oil pump according to claim 1, wherein the second oil passage (4) includes a first sub-oil passage (401), a second sub-oil passage (402), and a third sub-oil passage (403);

the first sub oil path (401), the second sub oil path (402) and the third sub oil path (403) are sequentially communicated, the second oil inlet (103) is communicated with the first sub oil path (401), and the second oil outlet (104) is communicated with the third sub oil path (403);

the axial line of the first sub oil passage (401) and the axial line of the first oil passage (3) are located on the same plane, the axial line of the second sub oil passage (402) is perpendicular to the plane where the axial line of the first sub oil passage (401) and the axial line of the first oil passage (3) are located, and the axial line of the third sub oil passage (403) is parallel to the axial line of the first oil passage (3).

3. The oil pump according to claim 1, characterized in that the pump body (1) further has a first sealing groove (61) and a second sealing groove (62), the first sealing groove (61) is annularly arranged on the periphery of the first oil outlet (102) for matching with the first sealing; the second sealing groove (62) is annularly arranged on the periphery of the second oil inlet (103) and used for being matched with a second sealing element.

4. The oil pump according to claim 3, characterized in that the oil pump further comprises a pumping assembly (5), the pumping assembly (5) being located in the communication passage (2) for sucking oil into the pump body (1).

5. The oil pump according to claim 1, characterized in that the oil pump further comprises a strainer (8), the strainer (8) being provided at the first oil inlet (101) for filtering the oil entering the first oil inlet (101).

6. The oil pump according to claim 1, characterized in that the oil pump further comprises a pressure control unit (9), the pressure control unit (9) being provided on the second oil passage (4) or the first oil passage (3).

7. The oil pump according to claim 3, further comprising a relief valve (10) and a plug (11);

the pump body is also provided with a pressure relief pipeline (12), one end of the pressure relief pipeline (12) is communicated with the communication passage (2), and the other end of the pressure relief pipeline is communicated with the outside; the safety valve (10) is positioned in the pressure relief pipeline (12), and the end cap (11) blocks one end of the pressure relief pipeline (12) communicated with the outside.

8. The oil pump according to claim 1, characterized in that the oil pump further comprises a first positioning sleeve (14) and a second positioning sleeve (15);

the first positioning sleeve (14) is positioned on a first side of the pump body (1), extends towards a direction far away from the first side, and is communicated with the second oil outlet (104); the second positioning sleeve (15) is located on the first side of the pump body (1), extends towards the direction far away from the first side, and is communicated with the third oil outlet (105).

9. An engine, characterized in that the engine comprises an oil pump according to any one of claims 1-8 and a block, the first oil passage (3) being in communication with a block oil passage of the block, and the second oil passage (4) being in communication with a head main oil passage of the block.

10. The engine of claim 9, further comprising a filter, wherein the oil pump is the oil pump of claim 4, a liquid inlet end of the filter is connected with the first oil outlet (102), and a liquid outlet end of the filter is connected with the second oil inlet (103).

Images