CN113323738A

CN113323738A - Engine

Info

Publication number: CN113323738A
Application number: CN202110813800.5A
Authority: CN
Inventors: 倪伟; 张欣林; 庞淑娟; 姜维
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2021-08-31
Also published as: WO2023000661A1

Abstract

The disclosure provides an engine, and belongs to the field of automobiles. The engine comprises a cylinder, an oil pan and a lubrication system; the cylinder comprises a cylinder body and a crankshaft, and the crankshaft is rotatably inserted in the cylinder body; the oil pan is positioned at the bottom of the cylinder body and is connected with the cylinder body; the lubricating system comprises an oil pump and a main oil gallery, wherein the oil pump is connected with one side of the cylinder body, sleeved on the crankshaft and in transmission connection with the crankshaft, an oil inlet of the oil pump is communicated with the inside of the oil pan, a first part of the main oil gallery is positioned in the cylinder, the end part of the main oil gallery is communicated with a lubricating cavity of the cylinder, a second part of the main oil gallery is positioned in the oil pan, and the end part of the main oil gallery is communicated with an oil outlet of the oil pump. According to the engine, the size of the engine can be reduced, and the development cost of an engine oil way is reduced.

Description

Engine

Technical Field

The disclosure belongs to the field of automobiles, and particularly relates to an engine.

Background

Automotive engines are used to power automobiles. An automotive engine includes a cylinder and an engine lubrication system disposed within the cylinder. The main function of the engine lubricating system is to deliver a fixed amount of clean lubricating oil to the surfaces of the parts which move relatively to each other, so as to realize liquid friction, reduce frictional resistance, reduce the wear of the parts, and clean and cool the surfaces of the parts.

In the related art, a lubricating system of an engine includes an oil pump, a main oil gallery, and the like. The oil pump is positioned on one side of the cylinder, and the main oil gallery is arranged in the cylinder. When the oil pump is used, the oil pump sucks lubricating oil from an oil sump, conveys the sucked lubricating oil to the main oil gallery, and conveys the lubricating oil to each part needing lubricating through the main oil gallery.

However, since the oil pump is located outside the cylinder, the engine occupies a large space, and is inconvenient to install and use in a vehicle.

Disclosure of Invention

The embodiment of the disclosure provides an engine, which can reduce the volume of the engine and reduce the development cost of an engine oil way. The technical scheme is as follows:

an embodiment of the present disclosure provides an engine including a cylinder, an oil pan, and a lubrication system;

the cylinder comprises a cylinder body and a crankshaft, and the crankshaft is rotatably inserted in the cylinder body;

the oil pan is positioned at the bottom of the cylinder body and is connected with the cylinder body;

the lubricating system comprises an oil pump and a main oil gallery, wherein the oil pump is connected with one side of the cylinder body, sleeved on the crankshaft and in transmission connection with the crankshaft, an oil inlet of the oil pump is communicated with the inside of the oil pan, a first part of the main oil gallery is positioned in the cylinder, the end part of the main oil gallery is communicated with a lubricating cavity of the cylinder, a second part of the main oil gallery is positioned in the oil pan, and the end part of the main oil gallery is communicated with an oil outlet of the oil pump.

In yet another implementation of the present disclosure, the side wall of the cylinder block has a crankshaft through hole and a stopper hole that communicate with each other;

the crankshaft through hole is positioned in the limiting hole and is coaxially arranged;

the oil pump is positioned in the limiting hole and is connected with the side wall of the cylinder body;

the end part of the crankshaft is inserted in the crankshaft through hole.

In yet another implementation of the present disclosure, the main oil gallery includes a first main oil gallery and a second main oil gallery;

the first main oil gallery is positioned in the oil pan and is connected with the inner wall of the oil pan, and the first end of the first main oil gallery is communicated with an oil outlet of the oil pump;

the second main oil gallery is located in the cylinder body, a first end of the second main oil gallery is communicated with a second end of the first main oil gallery, and a second end of the second main oil gallery is communicated with a lubricating cavity of the cylinder.

In another implementation manner of the present disclosure, the oil pan includes a bottom plate and a first side plate, a second side plate, a third side plate, and a fourth side plate that are connected in sequence, where the bottom plate is connected to the same side edge of the first side plate, the second side plate, the third side plate, and the fourth side plate respectively;

the first main oil gallery comprises an oil pan first vertical section, an oil pan transverse section and an oil pan second vertical section which are sequentially communicated;

the first vertical section of the oil pan is connected with the first side plate and is communicated with an oil outlet of the oil pump;

the oil pan transverse section is connected with the bottom plate;

the oil pan second vertical section is connected with the second side plate, and the oil pan second vertical section is communicated with the second main oil gallery.

In yet another implementation of the present disclosure, the engine further includes an oil filter located on one side of the cylinder block;

the second main oil passage comprises a cylinder body first oil passage and a cylinder body second oil passage;

the first end of the first oil channel of the cylinder body is communicated with the second vertical section of the oil pan, and the second end of the first oil channel of the cylinder body is communicated with the oil inlet of the oil filter;

the first end of the second cylinder oil duct is communicated with the oil outlet of the oil filter, and the second end of the second cylinder oil duct is communicated with the lubricating cavity of the cylinder.

In yet another implementation of the present disclosure, the oil filter includes a filter body and an oil switch;

the filter body is connected with the outer wall of the cylinder body;

the engine oil switch is connected with the filter body, and the sensing end of the engine oil switch is positioned in the second oil duct of the cylinder body.

In yet another implementation of the present disclosure, the main oil gallery further includes a crankshaft oil gallery;

the crankshaft oil duct is located inside the cylinder body and communicated with the second main oil duct, and the extension direction of the crankshaft oil duct is the same as the axial direction of the crankshaft.

In yet another implementation of the present disclosure, the cylinder further comprises a cylinder head and a camshaft;

the cylinder cover sealing cover is arranged at the top of the cylinder body, the cam shaft is rotatably inserted into the cylinder cover, and the cam shaft and the crankshaft are arranged in parallel;

the main oil duct further comprises a connecting oil duct and a camshaft oil duct, wherein a first part of the connecting oil duct is positioned in the cylinder body, and the end part of the connecting oil duct is communicated with the crankshaft oil duct;

the camshaft oil duct is located in the cylinder cover, and the extension direction of the camshaft oil duct is the same as that of the crankshaft oil duct.

In another implementation manner of the present disclosure, the cylinder further includes a bearing cover, and the bearing cover is located on one side of the cylinder cover and connected to the cylinder cover;

the main oil duct further comprises a bearing oil duct, the bearing oil duct is located in the bearing cover, and the bearing oil duct is communicated with the connecting oil duct.

In yet another implementation of the present disclosure, the engine further comprises an oil collector and an input elbow;

the oil collector is positioned in the oil pan;

the input elbow is located between the cylinder body and the oil pan, one end of the input elbow is communicated with an oil outlet of the engine oil collector, and the other end of the input elbow is communicated with an oil inlet of the engine oil pump.

The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:

in the engine provided by the embodiment of the disclosure, the oil pump is connected with one side of the cylinder body, sleeved on the crankshaft and in transmission connection with the crankshaft, so that the oil pump can be directly assembled on the side wall of the cylinder body, the occupied space of the oil pump is reduced, and the size of the whole engine is reduced. Meanwhile, the oil pump is driven by the crankshaft, so that a set of chain driving system is reduced, and the size of the whole engine is further reduced.

And because the first part of the main oil gallery is located inside the side wall of the cylinder, and the second part of the main oil gallery is located inside the side wall of the oil pan, that is, only the first part of the main oil gallery is located inside the side wall of the cylinder, and the second part of the main oil gallery is accommodated by using the internal space of the oil pan, the processing difficulty and cost of the whole main oil gallery are greatly reduced, and the processing cost of the engine is further reduced.

Drawings

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

FIG. 1 is a schematic structural diagram of a cylinder provided in an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of a part of a lubricating system and an oil pan provided by the embodiment of the disclosure;

FIG. 3 is a schematic structural diagram of a lubrication system provided by an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a cylinder head and a bearing cap provided by an embodiment of the disclosure.

The symbols in the drawings represent the following meanings:

1. a cylinder; 11. a cylinder body; 111. a crankshaft through hole; 112. a limiting hole; 12. a crankshaft; 13. a cylinder cover; 14. a camshaft; 15. a bearing cap;

2. an oil pan; 21. a first side plate; 22. a second side plate; 23. a third side plate; 24. a fourth side plate; 25. a base plate;

3. a lubrication system; 31. an oil pump; 32. a main oil gallery; 321. a first main oil gallery; 3211. a first vertical section of the oil pan; 3212. a transverse section of the oil pan; 3213. a second vertical section of the oil pan; 322. a second main oil gallery; 3221. a cylinder block first oil passage; 3222. a cylinder block second oil passage; 323. a crankshaft oil gallery; 3231. a crankshaft oil outlet pipe; 3232. the shaft diameter of the crankshaft; 324. connecting the oil duct; 325. a camshaft oil passage; 3251. an intake side camshaft oil passage; 3252. an exhaust-side camshaft oil passage; 32511. an oil outlet pipe of the camshaft at the air inlet side; 32512. an oil outlet plate of the camshaft at the air inlet side; 32513. an oil outlet pipe of the air inlet side hydraulic tappet; 3253. the camshaft is communicated with the oil duct; 326. a bearing oil passage; 3261. a one-way valve; 327. a supercharger oil gallery;

4. an oil filter; 41. a filter body; 42. an engine oil switch;

5. an engine oil collector;

6. and (4) inputting into a bent pipe.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

Illustratively, the engine in the embodiment of the present disclosure is a four-cylinder engine, that is, the cylinder 1 includes four cylinder chambers, and gas is combusted in the four cylinder chambers to convert chemical energy into mechanical energy to drive the engine to operate.

The disclosed embodiment provides an engine, as shown in fig. 1 and 2, including a cylinder 1, an oil pan 2, and a lubrication system 3. The cylinder 1 includes a cylinder block 11 and a crankshaft 12, and the crankshaft 12 is rotatably inserted into the cylinder block 11. The oil pan 2 is located at the bottom of the cylinder block 11, and is connected to the cylinder block 11.

With continued reference to fig. 2, the lubricating system 3 includes an oil pump 31 and a main oil gallery 32, the oil pump 31 is connected to one side of the cylinder block 11, sleeved on the crankshaft 12, and in transmission connection with the crankshaft 12, an oil inlet of the oil pump 31 is communicated with the inside of the oil pan 2, a first portion of the main oil gallery 32 is located inside the cylinder 1, and an end portion of the main oil gallery is communicated with a lubrication cavity of the cylinder 1, a second portion of the main oil gallery 32 is located inside the oil pan 2, and an end portion of the main oil gallery is communicated with an oil outlet of the oil pump 31.

In the engine provided by the embodiment of the disclosure, the oil pump 31 is connected with one side of the cylinder block 11, sleeved on the crankshaft 12 and in transmission connection with the crankshaft 12, so that the oil pump 31 can be directly assembled on the side wall of the cylinder block 11, the occupied space of the oil pump 31 is reduced, and the volume of the whole engine is reduced. Meanwhile, the crankshaft 12 drives the oil pump 31, so that a set of chain driving system is reduced, and the volume of the whole engine is further reduced.

Moreover, because the first part of the main oil gallery 32 is located inside the side wall of the cylinder 1 and the second part of the main oil gallery 32 is located inside the side wall of the oil pan 2, that is, only the first part of the main oil gallery 32 is located inside the side wall of the cylinder 1, and the second part of the main oil gallery 32 is accommodated by using the internal space of the oil pan 2, the processing difficulty and cost of the whole main oil gallery 32 are greatly reduced, and the processing cost of the engine is further reduced.

Alternatively, the side wall of the cylinder block 11 has a crankshaft through-hole 111 and a stopper hole 112 communicating with each other. The crankshaft through hole 111 is located in the stopper hole 112 and coaxially arranged. The oil pump 31 is positioned in the limiting hole 112 and connected with the side wall of the cylinder body 11. An end of the crankshaft 12 is inserted into the crankshaft through hole 111.

In the above-mentioned implementation, the crankshaft through hole 111 is used for mounting the crankshaft 12, and the limiting hole 112 is used for fixing the mounting machine oil pump 31, so that the connection between the oil pump 31 and the crankshaft 12 can be simply realized, and the oil pump 31 can be assembled on the cylinder 11.

With continued reference to fig. 2, the main oil gallery 32 may optionally include a first main oil gallery 321 and a second main oil gallery 322. The first main oil gallery 321 is located in the oil pan 2 and connected to the inner wall of the oil pan 2, a first end of the first main oil gallery 321 is communicated with an oil outlet of the oil pump 31, the second main oil gallery 322 is located in the cylinder block 11, a first end of the second main oil gallery 322 is communicated with a second end of the first main oil gallery 321, and a second end of the second main oil gallery 322 is communicated with a lubrication cavity of the cylinder 1.

In the embodiment of the present disclosure, the first main oil gallery 321 communicates with an oil outlet of the oil pump 31 for outputting lubricating oil, and meanwhile, development cost is saved by the first main oil gallery 321 being located in the oil pan 2. The second main oil gallery 322 serves to deliver the lubricating oil in the first main oil gallery 321 to the lubricating cavities of the cylinders 1. The lubrication cavity refers to a cavity in the engine, into which lubricating oil needs to be fed, such as a cavity in which the crankshaft 12 is located.

With continued reference to fig. 2, optionally, the oil pan 2 includes a bottom plate 25, and a first side plate 21, a second side plate 22, a third side plate 23, and a fourth side plate 24 connected in sequence, where the bottom plate 25 is connected to the same side of the first side plate 21, the second side plate 22, the third side plate 23, and the fourth side plate 24, respectively.

The first main oil gallery 321 includes a first vertical oil pan section 3211, a horizontal oil pan section 3212, and a second vertical oil pan section 3213, which are sequentially communicated. The first vertical section 3211 of the oil pan is located on the first side plate 21 and connected to the first side plate 21, and the first vertical section 3211 of the oil pan is communicated with an oil outlet of the oil pump 31. The oil pan transverse section 3212 is located on the bottom plate 25 and is connected to the bottom plate 25. The oil pan second vertical section 3213 is located on the second side plate 22, and is connected to the second side plate 22, and the oil pan second vertical section 3213 is communicated with the second main oil gallery 322.

In the above implementation, the first side plate 21, the second side plate 22, the third side plate 23, the fourth side plate 24 and the bottom plate 25 can simply enclose a cavity structure with an opening, so that the oil pan 2 can recover and contain lubricating oil.

The first vertical segment 3211 of the oil pan is arranged along the first side plate 21, the horizontal segment 3212 of the oil pan is arranged along the bottom plate 25, and the second vertical segment 3213 of the oil pan is arranged along the second side plate 22, so that the first main oil gallery 321 can be arranged according to the structure of the existing oil pan 2, and the development cost of the whole main oil gallery 32 is reduced.

In this embodiment, the first vertical segment 3211 of the oil pan and the second vertical segment 3213 of the oil pan are arranged in parallel, the horizontal segment 3212 of the oil pan is located between the first vertical segment 3211 of the oil pan and the second vertical segment 3213 of the oil pan, the horizontal segment 3212 of the oil pan is an L-shaped structure, and the bending portion of the horizontal segment 3212 of the oil pan is located at a corner position of the oil pan 2. This enables the arrangement with the inner wall of the oil pan 2 as a reference, greatly reducing the machining cost of the first main oil gallery 321.

With continued reference to fig. 2, the engine optionally further includes an oil filter 4, the oil filter 4 being located on one side of the cylinder 11. The second main oil passage 322 includes a cylinder first oil passage 3221 and a cylinder second oil passage 3222.

A first end of the cylinder body first oil passage 3221 is communicated with the oil pan second vertical section 3213, and a second end of the cylinder body first oil passage 3221 is communicated with an oil inlet of the oil filter 4. A first end of cylinder body second oil passage 3222 is communicated with an oil outlet of oil filter 4, and a second end of cylinder body second oil passage 3222 is communicated with a lubrication chamber of cylinder 1.

In the above implementation manner, the oil filter 4 is used to cool and filter the lubricating oil, the oil filter 4 is communicated with the cylinder body first oil passage 3221, the lubricating oil conveyed by the cylinder body first oil passage 3221 is cooled and filtered by the oil filter 4, and then conveyed to the cylinder body second oil passage 3222, and the clean cooled lubricating oil enters the inside of the lubricating cavity of the cylinder 1 through the cylinder body second oil passage 3222, so that the lubricating cavity of the engine is prevented from being blocked by impurities in the lubricating oil.

In this embodiment, the cylinder body first oil passage 3221 is an inverted U-shaped structure, and the cylinder body second oil passage 3222 is an inverted L-shaped structure, so that the second main oil passage 322 is convenient to arrange and machine.

Illustratively, the oil filter 4 includes a filter body 41 and an oil switch 42. The filter body 41 is connected with the outer wall of the cylinder body 11, and the oil inlet and the oil outlet of the oil filter 4 are positioned on the filter body 41. The oil switch 42 is connected to the filter body 41, and a sensing end of the oil switch 42 is located inside the second oil path 3222 of the cylinder body.

The filter body 41 is used for filtering and cooling the lubricating oil. The oil pressure of the lubricating oil is reduced in the flowing process, a certain oil pressure is required at the position where the lubricating oil just flows out of the oil outlet of the filter body 41, namely, the oil pressure is the largest at the position, and the oil pressure at the oil outlet of the filter body 41 is monitored through the oil switch 42, so that the normal operation of the whole engine can be ensured. When the oil switch 42 detects that the oil pressure at the oil outlet of the filter body 41 is 0 or lower than the minimum value of the actual requirement (generally set according to the actual working condition), the oil switch 42 automatically gives an alarm to prompt the operator, and simultaneously feeds the oil pressure at the oil outlet of the filter body 41 back to the oil pump 31 in the form of an electric signal, the oil pump 31 receives the electric signal, and controls the oil pressure at the oil outlet of the oil pump 31 again according to the oil pressure indicated by the electric signal, so that the oil pressure of the lubricating oil is adjusted again, each part of the engine is lubricated, and the oil pressure of the internal lubricating oil of the engine is adjusted in real time.

The filter body 41 is a component integrally formed by integrating the cooler and the filter, and the filter body 41 provided by the embodiment of the disclosure directly integrates the cooler and the filter, so that the cost of the engine is effectively reduced, and the arrangement of the engine is more compact.

Fig. 3 is a schematic structural diagram of a lubrication system provided in an embodiment of the present disclosure, and in conjunction with fig. 3, optionally, the main oil gallery 32 further includes a crankshaft oil gallery 323. The crankshaft oil passage 323 is located inside the cylinder block 11, the crankshaft oil passage 323 is communicated with the second main oil passage 322, the crankshaft oil passage 323 is used for conveying lubricating oil to the outer wall of the crankshaft 12, and the extension direction of the crankshaft oil passage 323 is the same as the axial direction of the crankshaft 12.

The crank oil passage 323 is used to deliver lubricating oil to the crankshaft 12 so as to lubricate and cool the outer wall of the crankshaft 12.

The crank oil passage 323 is located inside the cylinder block 11, and the crank oil passage 323 is directly cast into the side wall of the cylinder block 11.

With continued reference to fig. 3, illustratively, a plurality of crankshaft oil outlet pipes 3231 and a plurality of annular crankshaft shaft diameters 3232 are connected to the crankshaft oil passage 323, and the crankshaft oil outlet pipes 3231 and the crankshaft shaft diameters 3232 are arranged in a one-to-one correspondence. The crankshaft oil outlet pipe 3231 is arranged at intervals along the extending direction of the crankshaft oil passage 323, a first end of the crankshaft oil outlet pipe 3231 is communicated with the crankshaft oil passage 323, and a second end of the crankshaft oil outlet pipe 3231 is communicated with the corresponding crankshaft shaft diameter 3232. The crankshaft diameter 3232 is coaxially fitted over the outer wall of the crankshaft 12. The crankshaft shaft diameter 3232 has a flow hole through which lubricating oil flows.

The lubrication oil flows through the crankshaft oil gallery 323 to the crankshaft oil outlet pipe 3231 and then to the crankshaft diameter 3232. During rotation of the crankshaft 12, the lubricant oil passes through the flow holes in the crankshaft diameter 3232 to the outer wall of the crankshaft 12 to lubricate the crankshaft 12, thereby reducing the friction between the crankshaft 12 and the bearing pads externally received by the crankshaft 12.

Fig. 4 is a schematic structural diagram of a cylinder head and a bearing cap provided in an embodiment of the disclosure, and in conjunction with fig. 4, optionally, the cylinder 1 further includes a cylinder head 13 and a camshaft 14. Wherein the cylinder cover 13 is sealed over the top of the cylinder 11. The camshaft 14 is rotatably inserted in the cylinder head 13. The axis of the camshaft 14 is arranged in parallel with the axis of the crankshaft 12.

Referring again to fig. 3, the main oil gallery 32 further includes a connecting oil gallery 324, a camshaft oil gallery 325, and a first portion of the connecting oil gallery 324 is located in the cylinder block 11 and an end portion thereof is in communication with the crankshaft oil gallery 323. The second part of the connecting oil passage 324 is located in the cylinder head 13, the end part of the connecting oil passage is communicated with the camshaft oil passage 325, the camshaft oil passage 325 is located in the cylinder head 13, and the extending direction of the camshaft oil passage 325 is the same as that of the crankshaft oil passage 323.

The cylinder cover 13 is used to connect with the cylinder 11 to seal the cylinder 11. The camshaft 14 functions to control opening and closing motions of valves of cylinder chambers in the block 11. The camshaft 14 rotates smoothly in the engine, and normal operation of the engine can be ensured. The connecting oil passage 324 is used to communicate with the crankshaft oil passage 323 so as to introduce lubricating oil into the camshaft oil passage 325. The lubricating oil is supplied to the camshaft 14 through the camshaft oil passage 325 so that the camshaft 14 can smoothly rotate.

In the present embodiment, camshaft oil passage 325 includes intake side camshaft oil passage 3251, exhaust side camshaft oil passage 3252, and camshaft communication oil passage 3253, and intake side camshaft oil passage 3251 and exhaust side camshaft oil passage 3252 are arranged in parallel and opposite to each other. The extending direction of the intake side camshaft oil passage 3251 and the exhaust side camshaft oil passage 3252 is the same as the extending direction of the crankshaft oil passage 323, the intake side camshaft oil passage 3251 and the exhaust side camshaft oil passage 3252 are communicated by the camshaft communication oil passage 3253, and the middle of the camshaft communication oil passage 3253 is communicated with the connecting oil passage 324.

Since the number of the camshafts 14 is two, that is, the intake side camshaft oil passage 3251 is used to supply lubricant to the intake side camshaft, the exhaust side camshaft oil passage 3252 is used to supply lubricant to the exhaust side camshaft, and the camshaft communication oil passage 3253 is used to communicate with the connection oil passage 324 to supply lubricant to the intake side camshaft oil passage 3251 and the exhaust side camshaft oil passage 3252.

In the present embodiment, the intake side camshaft oil passage 3251 and the exhaust side camshaft oil passage 3252 have the same structure, and only the specific structure of the intake side camshaft oil passage 3251 will be briefly described here.

Optionally, the side wall of the intake side camshaft oil passage 3251 is provided with a plurality of intake side camshaft oil outlet pipes 32511 which are communicated with the inner cavity of the intake side camshaft oil passage 3251, and the lubricating oil in the intake side camshaft oil passage 3251 lubricates the intake side camshaft through the intake side camshaft oil outlet pipes 32511.

In this embodiment, the plurality of intake side camshaft oil outlet pipes 32511 are arranged on the side wall of the intake side camshaft oil passage 3251 at regular intervals, which enables the lubricating oil to uniformly enter the intake side camshaft.

The intake side camshaft oil outlet pipe 32511 is further connected with an arc intake side camshaft oil outlet plate 32512, and the intake side camshaft oil outlet plate 32512 can convey lubricating oil to the side wall of the intake side camshaft. In the process of rotation of the intake side camshaft, the frictional force between the intake side camshaft and the cylinder head 13 during rotation can be reduced.

The side wall of the intake side camshaft oil passage 3251 is provided with a plurality of intake side hydraulic tappet oil outlet pipes 32513 communicated with the inner cavity of the intake side camshaft oil passage 3251, and lubricating oil in the intake side camshaft oil passage 3251 is conveyed to the hydraulic tappets through the intake side hydraulic tappet oil outlet pipes 32513 to lubricate the hydraulic tappets at the intake side.

In this embodiment, the connecting oil passage 324 and the crank oil passage 323 are also cast into the inner walls of the cylinder block 11 and the cylinder head 13.

Referring again to fig. 4, optionally, cylinder 1 further includes a bearing cap 15, and bearing cap 15 is located on one side of cylinder head 13 and is connected to cylinder head 13. The main oil gallery 32 also includes a bearing oil gallery 326, the bearing oil gallery 326 being located within the bearing cap 15, the bearing oil gallery 326 being in communication with the connecting oil gallery 324.

The bearing cap 15 is adapted to cooperate with a bearing on the camshaft 14 to seal the bearing. Meanwhile, the camshaft phaser is arranged on the bearing cover 15, and the OVC valve on the camshaft phaser is communicated with the bearing oil passage 326, so that the oil passage inside the phaser can be controlled through the OVC valve on the camshaft phaser, and the camshaft phaser is lubricated according to the implementation condition.

Referring again to fig. 3, optionally, a check valve 3261 is disposed in the bearing oil passage 326, an oil inlet of the check valve 3261 is communicated with the connecting oil passage 324, and an oil outlet of the check valve 3261 is communicated with the inside of the bearing cover 15.

Check valve 3261 can reduce the backflow of engine oil in camshaft oil passage 325 in engine head 13, so that when the engine is restarted, the oil filling time of cylinder head 13 can be reduced, and the wear of the bearing pair of cylinder head 13 can be effectively reduced.

Optionally, the engine further comprises an oil collector 5 and an inlet bend 6, the oil collector 5 being located in the oil pan 2.

The input elbow 6 is positioned between the cylinder body 11 and the oil pan 2, one end of the input elbow 6 is communicated with the oil outlet of the engine oil collector 5, and the other end of the input elbow 6 is communicated with the oil inlet of the engine oil pump 31.

In the disclosed embodiment, the lubricating oil flows to the oil pan 2 after lubrication. The oil collector 5 is used for collecting lubricating oil in the oil pan 2, and the oil collector 5 is communicated with an oil inlet of the oil pump 31 through the input elbow 6, so that the oil pump 31 outputs the lubricating oil flowing to the oil pan 2 for re-lubrication, and the engine is guaranteed to form a circulating system.

The input elbow 6 can flexibly adjust the arrangement angle of the engine, for example, if the oil suction point of the engine oil collector 5 needs to be adjusted when the engine is in use, only the input elbow 6 needs to be changed, so that the change cost of parts can be effectively reduced.

In this embodiment, the oil collector 5 is a metal collector. This can extend the service life of the oil collector 5.

Optionally, main oil gallery 32 further includes a supercharger oil gallery 327, supercharger oil gallery 327 is located in cylinder 11, supercharger oil gallery 327 is located on one axial side of crankshaft oil gallery 323, supercharger oil gallery 327 is used to deliver lubricating oil to the supercharger, and supercharger oil gallery 327 is in communication with crankshaft oil gallery 323.

Lubricating oil in crankshaft oil passage 323 flows through supercharger oil passage 327 to the turbocharger of the engine to provide lubrication for the turbocharger. Arranging the supercharger oil passage 327 can reduce the difficulty in arrangement of later-stage oil passages, and meanwhile, the supercharger oil passage 327 is communicated with the crankshaft oil passage 323, so that the supercharger oil passage 327 is convenient to arrange.

In the embodiment of the disclosure, in order to reduce the machining cost, the oil passages are respectively processed by casting, so that on one hand, the design of the oil passages can be more flexible, and on the other hand, the machining cost of the oil passages is reduced.

Meanwhile, when the tail ends of the oil passages need to be sealed, the tail ends of the oil passages can be sealed through a rivet pulling process, a bowl-shaped plug and the like.

The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.

Claims

1. An engine, characterized in that it comprises a cylinder (1), an oil sump (2) and a lubrication system (3);

the cylinder (1) comprises a cylinder body (11) and a crankshaft (12), and the crankshaft (12) is rotatably inserted in the cylinder body (11);

the oil pan (2) is positioned at the bottom of the cylinder body (11) and is connected with the cylinder body (11);

the lubricating system (3) comprises an oil pump (31) and a main oil gallery (32), wherein the oil pump (31) is connected with one side of the cylinder body (11), sleeved on the crankshaft (12) and in transmission connection with the crankshaft (12), an oil inlet of the oil pump (31) is communicated with the inside of the oil pan (2), a first part of the main oil gallery (32) is positioned in the cylinder (1), the end part of the main oil gallery is communicated with a lubricating cavity of the cylinder (1), a second part of the main oil gallery (32) is positioned in the oil pan (2), and the end part of the main oil gallery is communicated with an oil outlet of the oil pump (31).

2. The engine according to claim 1, characterized in that the side wall of the block (11) has a crankshaft through hole (111) and a stopper hole (112) communicating with each other;

the crankshaft through hole (111) is positioned in the limiting hole (112) and is coaxially arranged;

the oil pump (31) is positioned in the limiting hole (112) and is connected with the side wall of the cylinder body (11);

the end of the crankshaft (12) is inserted into the crankshaft through hole (111).

3. The engine of claim 2, characterized in that the main oil gallery (32) includes a first main oil gallery (321) and a second main oil gallery (322);

the first main oil gallery (321) is positioned in the oil pan (2) and is connected with the inner wall of the oil pan (2), and the first end of the first main oil gallery (321) is communicated with an oil outlet of the oil pump (31);

the second main oil gallery (322) is located in the cylinder body (11), a first end of the second main oil gallery (322) is communicated with a second end of the first main oil gallery (321), and a second end of the second main oil gallery (322) is communicated with a lubricating cavity of the cylinder (1).

4. The engine according to claim 3, characterized in that the oil pan (2) comprises a bottom plate (25) and a first side plate (21), a second side plate (22), a third side plate (23) and a fourth side plate (24) which are connected in sequence, wherein the bottom plate (25) is respectively connected with the same side edge of the first side plate (21), the second side plate (22), the third side plate (23) and the fourth side plate (24);

the first main oil gallery (321) comprises an oil pan first vertical section (3211), an oil pan transverse section (3212) and an oil pan second vertical section (3213) which are sequentially communicated;

the oil pan first vertical section (3211) is connected with the first side plate (21), and the oil pan first vertical section (3211) is communicated with an oil outlet of the oil pump (31);

the oil pan transverse section (3212) is connected to the base plate (25);

the oil pan second vertical section (3213) is connected to the second side plate (22), and the oil pan second vertical section (3213) is communicated with the second main oil gallery (322).

5. An engine according to claim 3, characterized in that the engine further comprises an oil filter (4), the oil filter (4) being located on one side of the cylinder block (11);

the second main oil passage (322) comprises a cylinder first oil passage (3221) and a cylinder second oil passage (3222);

a first end of the first cylinder oil passage (3221) is communicated with the second vertical section (3213) of the oil pan, and a second end of the first cylinder oil passage (3221) is communicated with an oil inlet of the oil filter (4);

the first end of the second cylinder oil duct (3222) is communicated with an oil outlet of the oil filter (4), and the second end of the second cylinder oil duct (3222) is communicated with a lubricating cavity of the cylinder (1).

6. The engine according to claim 5, characterized in that the oil filter (4) comprises a filter body (41) and an oil switch (42);

the filter body (41) is connected with the outer wall of the cylinder body (11);

the oil switch (42) is connected with the filter body (41), and the sensing end of the oil switch (42) is positioned in the second oil duct (3222) of the cylinder body.

7. The engine of claim 3, characterized in that the main oil gallery (32) further includes a crank oil gallery (323);

the crankshaft oil passage (323) is located inside the cylinder block (11), the crankshaft oil passage (323) is communicated with the second main oil passage (322), and the extension direction of the crankshaft oil passage (323) is the same as the axial direction of the crankshaft (12).

8. An engine according to claim 7, characterized in that the cylinder (1) further comprises a head (13) and a camshaft (14);

the cylinder cover (13) is hermetically covered at the top of the cylinder body (11), the camshaft (14) is rotatably inserted into the cylinder cover (13), and the camshaft (14) and the crankshaft (12) are arranged in parallel;

the main oil channel (32) further comprises a connecting oil channel (324) and a camshaft oil channel (325), a first part of the connecting oil channel (324) is located in the cylinder body (11), and the end part of the connecting oil channel is communicated with the crankshaft oil channel (323), a second part of the connecting oil channel (324) is located in the cylinder cover (13), and the end part of the connecting oil channel is communicated with the camshaft oil channel (325);

the camshaft oil passage (325) is located in the cylinder head (13), and the extension direction of the camshaft oil passage (325) is the same as that of the crankshaft oil passage (323).

9. An engine according to claim 8, characterized in that the cylinder (1) further comprises a bearing cover (15), the bearing cover (15) being located on one side of the head (13) and being connected to the head (13);

the main oil gallery (32) further comprises a bearing oil gallery (326), the bearing oil gallery (326) is located in the bearing cover (15), and the bearing oil gallery (326) is communicated with the connecting oil gallery (324).

10. An engine according to any one of claims 1-9, characterized in that the engine further comprises an oil collector (5) and an inlet manifold (6);

the oil collector (5) is located in the oil pan (2);

the oil pan is characterized in that the input elbow (6) is located between the cylinder body (11) and the oil pan (2), one end of the input elbow (6) is communicated with an oil outlet of the engine oil collector (5), and the other end of the input elbow (6) is communicated with an oil inlet of the engine oil pump (31).