CN117145605A - Lubrication system of engine and vehicle - Google Patents

Abstract

The application discloses a lubrication system of an engine and a vehicle, wherein the lubrication system comprises: the engine comprises an oil storage tank, an engine cylinder body, an oil pan, an oil pump assembly and an oil cooler, wherein the oil pan is connected to the bottom of the engine cylinder body and jointly defines a lubrication cavity, the engine cylinder body is provided with an oil inlet, the oil pan is provided with an oil outlet, the oil inlet and the oil outlet are respectively communicated with the oil storage tank, the oil pump assembly and the oil cooler are both arranged on the engine cylinder body, the oil pump assembly comprises an oil supply pump and an oil return pump, the oil supply pump is located at the oil inlet, the oil return pump is located at the oil outlet, and a cooling runner of the oil cooler is communicated between the oil supply pump and the oil inlet through a first internal runner of the engine cylinder body. The lubricating system can ensure sufficient oil supply of the oil inlet, avoid failure of the lubricating system, and reduce the volume of the lubricating system by integrally arranging the first internal flow passage on the engine cylinder body, thereby realizing the miniaturized design of the lubricating system.

Description

Lubrication system of engine and vehicle

Technical Field

The application relates to the technical field of lubrication systems of vehicles, in particular to a lubrication system of an engine and a vehicle.

Background

In the related art, a wet oil pan is generally adopted in a lubrication system of an engine, inertia of a vehicle is large when the vehicle is fast accelerated, decelerated or turned, and lubricating oil is accumulated due to the action of inertia force and centrifugal force, so that insufficient supply of the lubricating oil at an oil inlet of an oil pump is caused, the function of the lubrication system is invalid, and the occupation space of the lubrication system of the engine is large, so that the miniaturization design of the lubrication system is not facilitated.

Disclosure of Invention

The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a lubrication system of an engine, which can reduce accumulation of lubricating oil and can realize a miniaturized design of the lubrication system.

A lubrication system of an engine according to an embodiment of the present application includes: the lubricating device comprises an oil storage tank, an engine cylinder body, an oil pan, an oil pump assembly and an oil cooler, wherein the oil pan is connected to the bottom of the engine cylinder body and jointly defines a lubricating cavity, the engine cylinder body is provided with an oil inlet, the oil pan is provided with an oil outlet, the oil inlet and the oil outlet are respectively communicated with the oil storage tank, the oil pump assembly and the oil cooler are both arranged on the engine cylinder body, the oil pump assembly comprises an oil supply pump and an oil return pump, the oil supply pump is located at the oil inlet, the oil return pump is located at the oil outlet, and a cooling runner of the oil cooler is communicated between the oil supply pump and the oil inlet through a first internal runner of the engine cylinder body.

According to the lubricating system of the engine, the oil return pump is arranged, so that lubricating oil can flow back through the oil outlet under the action of the oil return pump after the engine is lubricated, the accumulation of the lubricating oil on the oil pan can be reduced, the oil supply of the oil inlet is ensured to be sufficient, the failure of the lubricating system is avoided, and the cooling flow passage of the engine oil cooler can be communicated between the oil supply pump and the oil inlet through the first internal flow passage by integrally arranging the first internal flow passage on the engine cylinder body, so that a connecting pipeline is not required to be arranged independently, the size of the lubricating system is reduced, and the miniaturized design of the lubricating system is realized.

The lubrication system of an engine according to some embodiments of the present application further includes: and a filtering channel of the oil filter is communicated between the cooling flow channel and the oil inlet through a second internal flow channel of the engine cylinder body.

According to some embodiments of the engine lubrication system, the engine block is integrated with a third internal flow passage, which communicates between the oil outlet and the oil reservoir.

According to some embodiments of the engine lubrication system, the oil filter is located below the oil cooler.

According to some embodiments of the engine lubrication system of the present application, the oil feed pump and the scavenge pump are coaxially arranged.

According to some embodiments of the application, the oil feed pump is located on a side of the scavenge pump adjacent to the oil cooler.

According to the lubricating system of the engine, according to some embodiments of the application, the oil pump assembly and the oil cooler are distributed at intervals in the width direction of the vehicle on one side of the engine.

According to the lubrication system of the engine of some embodiments of the present application, the oil feed pump and the oil return pump are sequentially distributed in the width direction of the vehicle at one side of the engine.

The lubrication system of an engine according to some embodiments of the present application further includes: and the cylinder cover is provided with at least one orifice which is opened towards the oil pan.

The application further provides a vehicle.

According to an embodiment of the present application, a vehicle includes: the lubrication system of an engine as in any one of the above embodiments.

The advantages of the vehicle over the lubrication system of the engine described above are the same as those of the prior art and are not described in detail herein.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

The foregoing and/or additional aspects and advantages of the application will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic illustration of a lubrication system of an engine according to some embodiments of the present application;

FIG. 2 is a schematic illustration of the oil pump assembly of FIG. 1;

FIG. 3 is an enlarged view of a portion of the lubrication system of FIG. 1;

FIG. 4 is an enlarged partial view of another view of the lubrication system of FIG. 1;

FIG. 5 is a flowchart of the operation of a lubrication system according to some embodiments of the present application;

fig. 6 is a schematic illustration of a vehicle according to some embodiments of the application.

Reference numerals:

a vehicle 1000;

a lubrication system 100;

an oil storage tank 10, an engine cylinder 20, an oil inlet 21, an oil pan 30 and an oil outlet 31;

the engine oil pump assembly 40, the oil feed pump 41, the oil return pump 42, the engine oil cooler 50 and the engine oil filter 60.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the application. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the applicability of other processes and/or the use of other materials.

A lubrication system 100 according to an embodiment of the present application is described below with reference to fig. 1-6.

As shown in fig. 1 to 4, a lubrication system 100 of an engine according to an embodiment of the present application includes: the engine comprises an oil storage tank 10, an engine cylinder 20, an oil pan 30, an oil pump assembly 40 and an oil cooler 50.

The oil pan 30 is connected to the bottom of the engine cylinder 20 and jointly defines a lubrication cavity, the engine cylinder 20 is provided with an oil inlet 21, the oil pan 30 is provided with an oil outlet 31, and the oil inlet 21 and the oil outlet 31 are respectively communicated with the oil storage tank 10; the oil pump assembly 40 and the oil cooler 50 are both installed on the engine block 20, the oil pump assembly 40 comprises an oil supply pump 41 and an oil return pump 42, the oil supply pump 41 is located at the oil inlet 21, the oil return pump 42 is located at the oil outlet 31, and a cooling flow passage of the oil cooler 50 is communicated between the oil supply pump 41 and the oil inlet 21 through a first internal flow passage of the engine block 20.

Therefore, the lubricating oil passes through the first internal flow passage under the driving of the oil supply pump 41 and enters the lubricating cavity through the oil inlet 21, and after the lubricating is completed, the lubricating oil is discharged from the oil outlet 31 and enters the oil storage tank 10 again under the driving of the oil return pump 42, so that the lubricating oil can better realize circulating flow, thereby reducing the accumulation of the lubricating oil on the oil pan 30, ensuring the oil supply of the oil inlet 21 to be sufficient, avoiding the failure of the lubricating system 100, and the cooling flow passage of the engine oil cooler 50 can be communicated between the oil supply pump 41 and the oil inlet 21 through the first internal flow passage by integrating the first internal flow passage on the engine cylinder body 20, thereby not independently arranging a connecting pipeline, so that the volume of the lubricating system 100 is reduced, and further the miniaturization design of the lubricating system 100 is realized.

For example, the lubrication system 100 in this embodiment is a dry lubrication system 100, that is, when lubricating the engine, the lubrication oil is fed into the engine through the oil feed pump 41, the lubrication oil can lubricate the engine when entering the engine, and the oil return pump 42 can pump the lubrication oil out of the engine after the lubrication is completed, so that the engine does not need to stir the gears for lubrication, and the oil pan 30 does not need to store the oil, so that the oil pan 30 can be made smaller, which is beneficial to the miniaturization design of the lubrication system 100.

Further, the oil pump assembly 40 includes an oil feed pump 41 and an oil return pump 42, the oil feed pump 41 can convey the oil in the oil storage tank 10 to the main oil duct of the engine through the oil inlet 21, and a first internal flow passage is arranged between the oil feed pump 41 and the oil inlet 21 and is connected with the cooling flow passage of the oil cooler 50, so that the oil can enter the oil cooler 50 for cooling, after cooling, the engine is lubricated, and an oil outlet 31 is arranged on the oil pan 30, the lubricated oil can be discharged from the oil outlet 31 and enter the oil storage tank 10 under the driving of the oil return pump 42, so that the oil can not be accumulated on the oil pan 30, further the supply of the oil at the oil inlet 21 is ensured, and meanwhile, the first internal flow passage is integrated on the engine cylinder 20, so that the arrangement of connecting pipelines can be reduced, and the volume of the lubricating system 100 is smaller.

In this embodiment, three oil return pumps 42 are provided, so that the three oil return pumps 42 can keep sucking back the lubricating oil in any condition of the engine, so that the oil in the engine is not easy to accumulate on the oil pan 30.

According to the lubrication system 100 of the embodiment of the application, by arranging the oil return pump 42, lubricating oil can flow back through the oil outlet 31 under the action of the oil return pump 42 after the lubrication of the engine is completed, so that the accumulation of the lubricating oil on the oil pan 30 can be reduced, the oil supply of the oil inlet 21 is ensured to be sufficient, the failure of the lubrication system 100 is avoided, and by integrally arranging the first internal flow passage on the engine cylinder 20, the cooling flow passage of the engine oil cooler 50 can be communicated between the oil supply pump 41 and the oil inlet 21 through the first internal flow passage, so that a connecting pipeline is not required to be separately arranged, the volume of the lubrication system 100 is reduced, and the miniaturization design of the lubrication system 100 is realized.

In some embodiments, as shown in fig. 2-4, the lubrication system 100 further includes: the oil filter 60, the filtering passage of the oil filter 60 is communicated between the cooling flow passage and the oil inlet 21 through the second internal flow passage of the engine block 20.

It should be noted that, the filtering channel of the oil filter 60 is disposed between the cooling channel and the oil inlet 21, and meanwhile, the filtering channel is also communicated with the second internal flow channel, so that the lubricating oil can enter the filtering channel through the second internal flow channel and enter the oil filter 60 to be filtered, and thus, the oil filter 60 is also disposed on the engine cylinder 20, thereby facilitating the miniaturization design of the lubrication system 100.

The second internal flow passage is also integrated on the engine cylinder 20, so that lubricating oil flows in the engine cylinder 20 after passing through the cooling flow passage, the arrangement of the connecting pipeline can be obviously reduced, the volume of the lubrication system 100 can be effectively reduced, and the miniaturized design of the lubrication system 100 can be realized.

Further, the filtering passage of the oil filter 60 is communicated with the cooling flow passage and the oil inlet 21 through the second internal flow passage, so that the lubricating oil enters the oil filter 60 for filtering after cooling in the oil cooler 50, and the filtered lubricating oil enters the engine for lubrication through the oil inlet 21, so that impurities in the lubricating oil can be avoided and the engine is worn.

Therefore, impurities in the lubricating oil can be filtered out through the oil filter 60, so that the lubricating oil entering the engine is not easy to wear, and the filtering channel of the oil filter 60 is communicated with the second internal flow channel, so that the arrangement of a connecting pipeline is reduced, and the miniature design of the lubricating system 100 is facilitated.

In some other embodiments, the filtering passage of the oil filter 60 may be disposed between the cooling passage and the first internal passage, so that the oil will be filtered by the oil filter 60, and after the filtering, the oil is cooled in the oil cooler 50, and after the cooling, the oil enters the engine through the oil inlet 21 for lubrication, so that the abrasion of the engine can be reduced by the oil entering the engine.

In some embodiments, the engine block 20 is integrated with a third internal flow passage that communicates between the oil outlet 31 and the oil reservoir 10.

Therefore, the third internal flow passage can enable the lubricated lubricating oil to enter the oil storage tank 10 from the oil outlet 31, so that the lubricated lubricating oil cannot be accumulated on the oil pan 30, the oil supply of the oil inlet 21 can be ensured to be sufficient, and lubrication failure is avoided.

In some embodiments, as shown in fig. 2-4, an oil filter 60 is located below the oil cooler 50.

From this, after the lubricating oil is cooled down in oil cooler 50, can get into to oil cleaner 60 under the effect of gravity and lubricate, can make the velocity of flow of lubricating oil bigger under the addition of gravity to improve the velocity of flow of lubricating oil, and then improve lubricated effect, still integrate organic oil pressure sensor on oil cleaner 60 mount pad simultaneously, can monitor the pressure of lubricating oil more easily like this, and can make follow-up maintenance easier like this.

In some embodiments, as shown in fig. 2-4, the feed pump 41 and the scavenge pump 42 are coaxially arranged.

Thus, the coaxially arranged oil feed pump 41 and the oil return pump 42 can be driven together by the crankshaft, which enables the oil feed pump 41 and the oil return pump 42 to share the same driving member, which enables the volume of the lubrication system 100 to be reduced, thereby realizing a miniaturized design of the lubrication system 100.

In some embodiments, as shown in fig. 2-4, the oil feed pump 41 is located on a side of the scavenge pump 42 that is adjacent to the oil cooler 50.

Therefore, the oil supply pump 41 is closer to the oil cooler 50, so that the arrangement of the oil path can be reduced more easily when the oil is pumped into the oil cooler 50 by the oil supply pump 41, the path loss of the oil path can be reduced, the oil pressure building time can be reduced, the response speed of the lubricating system 100 can be faster, and meanwhile, the lubricating system can ensure that enough pressure is provided when the lubricating oil enters the engine, so that the engine can be lubricated well.

In some embodiments, as shown in fig. 2-4, the oil pump assembly 40 and the oil cooler 50 are spaced apart on one side of the engine along the width of the vehicle 1000.

Thus, the positioning of both the oil pump assembly 40 and the oil cooler 50 on the same side of the engine enables a shorter oil path therebetween, so that oil pressure can be quickly established, thereby enabling a correspondingly faster speed of the lubrication system 100 and enabling a miniaturized design of the lubrication system 100.

In some embodiments, as shown in fig. 2 to 4, the oil feed pump 41 and the scavenging pump 42 are distributed in order along the width direction of the vehicle 1000 on one side of the engine.

Therefore, the oil feed pump 41 and the oil return pump 42 are located on the same side of the engine block 20 and are distributed in sequence, so that the overall height and length of the engine block 20 can be reduced, the arrangement of the engine block 20 can be made more compact, the arrangement space of the engine block 20 can be reduced on the basis of meeting the lubrication requirement, and the miniaturization of the lubrication system 100 is improved.

In some embodiments, the lubrication system 100 further comprises: and (5) a cylinder cover.

The cylinder head is provided with at least one orifice that opens to the oil pan 30.

Therefore, by arranging the throttle hole on the cylinder cover, less oil can be adhered to the cylinder cover, so that the accumulation of lubricating oil on the cylinder cover is reduced, and the supply of the lubricating oil at the oil inlet 21 is improved, so that the lubricating effect is ensured.

The lubrication system 100 of a preferred embodiment of the present application is described below in conjunction with fig. 5:

the lubrication system 100 includes an oil pan 30, an oil collector, an oil return pump 42, an oil separator, an oil tank 10, an oil feed pump 41, an oil cooler 50, an oil filter 60, a proportional valve, a cylinder main oil passage, a main bearing, a connecting rod bearing, a piston cooling nozzle, a supercharger oil passage, a cylinder head orifice, a cylinder head oil passage, a hydraulic tappet oil passage, a high-pressure oil pump oil passage, a timing tensioner oil passage, a VVT oil passage, a cam bearing oil passage, and the like.

Wherein, an oil feed pump 41 is integrated with three oil return pumps 42, and through coaxial transmission, wherein power is provided by the crankshaft, the oil feed pump 41 is positioned at the rear end of the oil pump assembly 40 (the driving end of the oil pump assembly 40 is the front end), the oil return pumps 42 are arranged at the middle part of the oil pump assembly 40, and the oil pump assembly 40 is fixed at the front end of the left side of the engine cylinder body 20. The oil outlets 31 of the corresponding three engine oil collectors are connected with the oil inlets 21 of the oil return pump 42, and part of the oil paths of the oil outlets 31 of the oil return pump 42 are integrated on the cylinder body and connected with the oil-gas separator and the oil storage tank 10. The oil inlet 21 of the oil supply pump 41 is connected with the oil storage tank 10, the oil way of the oil outlet 31 of the oil supply pump 41 is integrally arranged on the engine cylinder body 20, the oil filter 60 and the oil cooler 50 are both arranged on the engine cylinder body 20, lubricating oil enters the oil filter 60 through the oil supply pump 41, the oil way of the oil outlet 31 of the oil filter 60 and the oil way of the oil inlet 21 of the oil cooler 50 are integrally arranged on the engine cylinder body 20, and the oil outlet 31 of the oil cooler 50 is butted with the oil inlet 21 of the main oil duct, so that the lubricating oil can enter the engine for lubrication after being filtered and cooled.

In the engine, the lubricating oil lubricates the left and right turbochargers, the piston cooling nozzle, the main journal, the connecting rod neck, the left and right cam bearings and lifters, the left and right VVT (variable valve timing system), and the tensioner, and after the lubrication is completed, the lubricating oil is driven by the oil return pump 42 to enter the oil reservoir tank 10 again.

Of course, in the above-described embodiments, the arrangement, the number, and the like of the partial structures are given as one preferred embodiment for illustration, and are not meant to be limiting.

The application also proposes a vehicle 1000.

The vehicle 1000 according to the embodiment of the application includes: the lubrication system 100 of the engine of any of the above embodiments.

As shown in fig. 6, in the vehicle 1000 according to the embodiment of the application, in the lubrication system 100 of the engine, by providing the oil return pump 42, the lubricating oil can flow back through the oil outlet 31 under the action of the oil return pump 42 after the lubrication of the engine is completed, so that the accumulation of the lubricating oil in the oil pan 30 can be reduced, the oil supply of the oil inlet 21 is ensured to be sufficient, the failure of the lubrication system 100 is avoided, and by integrally providing the first internal flow passage on the engine block 20, the cooling flow passage of the engine oil cooler 50 can be communicated between the oil supply pump 41 and the oil inlet 21 through the first internal flow passage, so that a separate connecting pipeline is not required, the volume of the lubrication system 100 is reduced, and the miniaturization design of the lubrication system 100 is realized.

In the description of the present application, it should 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", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the application, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A lubrication system of an engine, comprising:

an oil storage tank;

the engine cylinder body and the oil pan are connected to the bottom of the engine cylinder body and jointly define a lubrication cavity, the engine cylinder body is provided with an oil inlet, the oil pan is provided with an oil outlet, and the oil inlet and the oil outlet are respectively communicated with the oil storage tank;

the engine oil pump assembly and the engine oil cooler are both arranged on the engine cylinder body, the engine oil pump assembly comprises an oil supply pump and an oil return pump, the oil supply pump is located at the oil inlet, the oil return pump is located at the oil outlet, and a cooling flow passage of the engine oil cooler is communicated between the oil supply pump and the oil inlet through a first internal flow passage of the engine cylinder body.

2. The lubrication system of an engine according to claim 1, further comprising: and a filtering channel of the oil filter is communicated between the cooling flow channel and the oil inlet through a second internal flow channel of the engine cylinder body.

3. The lubrication system of an engine according to claim 1, wherein the engine block is integrated with a third internal flow passage that communicates between the oil outlet and the oil reservoir.

4. The lubrication system of an engine according to claim 2, wherein the oil filter is located below the oil cooler.

5. The lubrication system of an engine according to claim 1, wherein the oil feed pump and the scavenge pump are coaxially arranged.

6. The lubrication system of an engine according to claim 1, wherein the oil feed pump is located on a side of the scavenge pump that is adjacent to the oil cooler.

7. The lubrication system of claim 1, wherein the oil pump assembly and the oil cooler are spaced apart on one side of the engine in a width direction of the vehicle.

8. The lubrication system of an engine according to claim 1, wherein the oil feed pump and the scavenging pump are distributed in order in a width direction of the vehicle on one side of the engine.

9. The lubrication system of an engine according to any one of claims 1 to 8, further comprising: and the cylinder cover is provided with at least one orifice which is opened towards the oil pan.

10. A vehicle, characterized by comprising: a lubrication system for an engine according to any one of claims 1-9.