CN209908973U - Engine and vehicle with same - Google Patents
Engine and vehicle with same Download PDFInfo
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- CN209908973U CN209908973U CN201920146819.7U CN201920146819U CN209908973U CN 209908973 U CN209908973 U CN 209908973U CN 201920146819 U CN201920146819 U CN 201920146819U CN 209908973 U CN209908973 U CN 209908973U
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses an engine and vehicle that has it, the engine includes: the cylinder body is provided with a cylinder body oil duct; the crankshaft is provided with a plurality of crankshaft main journals and a plurality of crankshaft connecting journals, the crankshaft main journals and the crankshaft connecting journals are distributed in a staggered mode, a lubricating gap is formed between each crankshaft main journal and the cylinder body, and the lubricating gap is communicated with the oil duct of the cylinder body; the crankshaft main journal is provided with a crankshaft oil inlet communicated with the lubricating gap, the crankshaft connecting rod journal is provided with a crankshaft oil outlet, and a crankshaft oil passage is formed between the crankshaft oil inlet and the crankshaft oil outlet. Therefore, on one hand, lubricating oil with lower viscosity is adopted for lubrication, so that the friction loss of a friction pair formed by a crankshaft connecting rod neck and a connecting rod shoe can be effectively reduced, and the oil consumption of the engine is reduced; on the other hand, the risk of tile burning of the connecting rod tile can be reduced, and the requirement on the wear resistance of the connecting rod tile is lowered, so that the use cost of the connecting rod tile can be lowered.
Description
Technical Field
The utility model belongs to the technical field of the vehicle technique and specifically relates to a vehicle that relates to an engine and have it.
Background
When an engine is designed, in order to ensure that a moving part works normally, sufficient lubricating oil needs to be provided for a connecting rod bush in the worst working environment so as to form a stable oil film, and engine oil (5W-30, 10W-40 and the like) with higher viscosity is often used.
In the running process of the engine, engine oil is pumped out of the engine oil pump and then enters the cylinder oil duct, then enters the main shaft tile and then enters the connecting rod tile from the crankshaft oil hole, so that the lubricating requirement of the connecting rod tile is met, the engine has large friction loss, high engine oil consumption and poor emission; the engine adopting low-viscosity engine oil (0W-20) has high requirements on the bearing bush, needs to add wear-resistant/antifriction coatings and the like, improves the process difficulty and increases the cost, and the risk of burning the bearing bush of the connecting rod is high.
Disclosure of Invention
In view of this, the present invention is directed to an engine.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
an engine comprising: the cylinder body is provided with a cylinder body oil duct; the crankshaft is provided with a plurality of crankshaft main journals and a plurality of crankshaft connecting journals, the crankshaft main journals and the crankshaft connecting journals are distributed in a staggered mode, a lubricating gap is formed between each crankshaft main journal and the corresponding cylinder body, and the lubricating gap is communicated with the oil duct of the cylinder body; the crankshaft main journal is provided with a crankshaft oil inlet communicated with the lubricating gap, the crankshaft connecting rod journal is provided with a crankshaft oil outlet, and a crankshaft oil passage is formed between the crankshaft oil inlet and the crankshaft oil outlet.
According to some embodiments of the invention, the end of the cylinder oil duct is formed with a cylinder oil-out in communication with the lubrication gap, the axis of the cylinder oil-out being offset with respect to the axis of the cylinder oil duct.
In some embodiments, the cylinder outlet is an oblong hole, and a cross-sectional area of the cylinder outlet gradually increases in a direction toward an axis of the main journal.
According to some embodiments of the present invention, a cylinder bearing hole is formed in the cylinder, a main bearing shell is installed in the cylinder bearing hole, and the lubricating gap is formed between the main bearing shell and the crankshaft main journal; the main shaft bush is provided with a first oil port which is respectively communicated with the cylinder oil duct and the lubricating gap, and an oil storage space communicated with the cylinder oil duct is arranged between the main shaft bush and the cylinder bearing hole.
Further, a portion of a surface of the block bearing hole opposite to the main bearing shell is recessed outward to form the oil storage space.
Further, the inner surface of the main bearing shell is provided with a main bearing shell oil groove which extends along the circumferential direction of the main bearing shell.
Further, a second oil port is further formed in the main shaft bush and is respectively communicated with the oil storage space and the lubricating gap.
Further, the first oil port is arranged adjacent to one end of the main shaft bushing, the second oil port is arranged adjacent to the other end of the main shaft bushing, and the distance between the center of the first oil port and the one end of the main shaft bushing is the same as the distance between the center of the second oil port and the other end of the main shaft bushing.
Further, the diameter of the first oil port is larger than that of the second oil port.
Compared with the prior art, the engine has the following advantages:
on one hand, the lubricating oil flowing into the oil duct of the cylinder body can lubricate a crankshaft main journal and a crankshaft connecting rod journal respectively, and can provide sufficient lubricating oil for lubricating the crankshaft connecting rod journal, so that the engine of the embodiment can adopt the lubricating oil with lower viscosity for lubrication, the friction loss of a friction pair formed by the crankshaft connecting rod journal and a connecting rod bush can be effectively reduced, and the oil consumption of the engine is reduced; on the other hand, for providing sufficient lubricating oil between crankshaft connecting rod neck and the connecting rod tile, can reduce the risk that the connecting rod tile burns the tile, reduce the wearability requirement of connecting rod tile to can reduce the use cost of connecting rod tile.
Another object of the present invention is to provide a vehicle, including: the engine described in the above embodiments.
The vehicle has the same advantages of the engine compared with the prior art, and the detailed description is omitted.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic view illustrating the cooperation of a cylinder block, a crankshaft and a main bearing shell of an engine according to an embodiment of the present invention;
fig. 2 is a schematic view of an angle of a cylinder block of an engine according to an embodiment of the present invention;
fig. 3 is a schematic view of another angle of the cylinder block of the engine according to the embodiment of the present invention;
fig. 4 is a schematic view of a main bearing shell of an engine according to an embodiment of the present invention;
fig. 5 is a schematic view of a crankshaft of an engine according to an embodiment of the present invention.
Description of reference numerals:
10-cylinder, 11-cylinder oil channel, 12-cylinder oil outlet, 13-cylinder bearing hole,
20-crankshaft, 21-crankshaft main journal, 211-crankshaft oil inlet, 22-crankshaft connecting rod journal, 221-crankshaft oil outlet, 23-crankshaft oil passage,
30-a main bearing shell, 31-a first oil port, 32-a main bearing shell oil groove and 33-a second oil port;
a-oil storage space, b-lubrication gap.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 to 5, an engine according to an embodiment of the first aspect of the present invention includes: the cylinder comprises a cylinder body 10 and a crankshaft 20, wherein a cylinder body oil duct 11 is arranged on the cylinder body 10; the crankshaft 20 is provided with a plurality of crankshaft main journals 21 and a plurality of crankshaft connecting journals 22, the crankshaft main journals 21 and the crankshaft connecting journals 22 are distributed in a staggered manner, a lubricating gap b is formed between the crankshaft main journals 21 and the cylinder body 10, and the lubricating gap b is communicated with the cylinder body oil passage 11; the crankshaft main journal 21 is provided with a crankshaft oil inlet 211 communicated with the lubricating gap b, the crankshaft connecting journal 22 is provided with a crankshaft oil outlet 221, and a crankshaft oil passage 23 is formed between the crankshaft oil inlet 211 and the crankshaft oil outlet 221.
Specifically, the crankshaft oil duct 23 is communicated with the crankshaft connecting rod neck 22 and the crankshaft main journal 21, so that leakage of lubricating oil can be reduced, the lubricating oil can be ensured to continuously supply oil to the connecting rod bush, the failure risk of the connecting rod bush caused by the oil supply problem is reduced, meanwhile, the requirement on the abrasion resistance of the connecting rod bush is low due to sufficient and stable oil supply, and the material selection cost of the connecting rod bush can be reduced.
According to the utility model discloses engine, the lubricating oil pump is gone into the lubricating oil of cylinder oil duct 11 and is flowed into in the lubrication clearance b to can form stable oil film in crankshaft main journal 21's circumference, and then at least part is located lubricating oil in lubrication clearance b can enter into bent axle oil duct 23 through bent axle oil inlet 211, and flows out bent axle oil duct 23 through bent axle oil-out 221 and form stable oil film in order to form outside bent axle connecting journal 22.
Therefore, on one hand, the lubricating oil flowing into the cylinder oil passage 11 can lubricate the crankshaft main journal 21 and the crankshaft connecting journal 22 respectively, and can provide sufficient lubricating oil for lubricating the crankshaft connecting journal 22, so that the engine of the embodiment can be lubricated by adopting the lubricating oil with lower viscosity, the friction loss of a friction pair formed by the crankshaft connecting journal 22 and a connecting rod bush can be effectively reduced, and the oil consumption of the engine is reduced; on the other hand, sufficient lubricating oil is provided between the crankshaft connecting rod neck 22 and the connecting rod shoe, the risk of the connecting rod shoe burning can be reduced, the requirement on the wear resistance of the connecting rod shoe is lowered, and therefore the use cost of the connecting rod shoe can be lowered.
It should be noted that, in the engine of the embodiment, the lubricating oil can be sufficiently provided to the region of the crankshaft connecting rod neck 22, so that a stable oil film can be formed on the region of the crankshaft connecting rod neck 22, and the stable oil film can prevent the bush burning of the connecting rod bush matched with the crankshaft connecting rod neck 22, and can effectively improve the working environment of the connecting rod bush, so that the connecting rod bush with lower wear resistance requirement can be used, and the connecting rod bush with lower price can be selected and used by reducing the use cost of the connecting rod bush.
As shown in fig. 2 and 3, according to some embodiments of the present invention, the end of the cylinder oil passage 11 is formed with a cylinder oil outlet 12 communicating with the lubrication gap b, the axis of the cylinder oil outlet 12 is offset with respect to the axis of the cylinder oil passage 11, and the cylinder oil outlet 12 is an oblong hole, and the cross-sectional area of the cylinder oil outlet 12 gradually increases in a direction toward the main journal 21.
That is, the cylinder oil outlet 12 and the cylinder oil passage 11 are eccentrically disposed (i.e., offset), and the cylinder oil outlet 12 is formed in an oblong conical structure. In this way, the lubricating oil entering the lubricating gap b from the cylinder oil passage 11 can be decelerated at the position of the cylinder oil outlet 12, so that a stable pressure environment is formed in the lubricating gap b, and thus a stable and continuous supply of the lubricating oil can be provided for the lubricating gap b.
It can be understood that, under the operating condition that the engine operates at the middle and high rotating speed, the problem of insufficient supply of the lubricating oil in the lubricating gap b and the area of the crankshaft connecting rod neck 22 can be effectively solved by adopting the engine of the embodiment.
As shown in fig. 1 and 5, a cylinder body 10 is provided with a cylinder bearing hole 13, a main shaft bushing 30 is installed in the cylinder bearing hole 13, and a lubricating gap b is formed between the main shaft bushing 30 and a crankshaft main journal 21; the main bearing shell 30 is provided with a first oil port 31 which is respectively communicated with the cylinder oil duct 11 and the lubricating gap b, an oil storage space a which is communicated with the cylinder oil duct 11 is arranged between the main bearing shell 30 and the cylinder bearing hole 13, the main bearing shell 30 is also provided with a second oil port 33, the second oil port 33 is respectively communicated with the oil storage space a and the lubricating gap b, and the part of the surface of the cylinder bearing hole 13 opposite to the main bearing shell 30 is recessed outwards to form the oil storage space a.
That is, the lubricating oil flowing into the cylinder bearing hole 13 through the cylinder outlet 12 at least partially flows into the lubricating gap b through the first oil port 31, the other part of the lubricating oil flows into the oil storage space a, and the lubricating oil in the oil storage space a may flow into the lubricating gap b through the second oil port 33. Thus, when the oil film in the lubrication gap b is broken, the lubricating oil in the oil storage space a can be supplied to the lubrication gap b at the first timing, and it is possible to ensure that the lubricating oil film can be stably formed in the lubrication gap b for a long period of time, thereby effectively preventing the crank journal 21 from being worn.
It can be understood that the cylinder 10 of the engine is divided into the upper cylinder 10 and the lower cylinder 10, and when the lubricating oil passage communicating with the lubricating gap b is formed on the upper cylinder 10, the first oil port 31 is correspondingly formed on the upper spindle shoe 30, and when the lubricating oil passage communicating with the lubricating gap b is formed on the lower cylinder 10, the first oil port 31 is correspondingly formed on the lower spindle shoe 30.
It should be noted that the cylinder oil passage 11, the cylinder oil outlet 12, the main bearing shell 30, the lubricating gap b and the crankshaft oil passage 23 together define a connecting rod shell lubricating oil passage, and are adapted to supply lubricating oil to the connecting rod shell. Therefore, sufficient lubricating oil can be provided for the connecting rod bush, the lubricating oil with higher viscosity does not need to be used, and the oil consumption of the engine can be further reduced.
Further, it is understood that the cylinder bearing hole 13 is grooved toward at least a portion of the main bearing shell 30 to form an oil storage space a, and the groove has a constant width and depth. Thus, the strength of the cylinder bearing hole 13 can be ensured, the impact of explosion pressure and the like of a combustion chamber borne by the cylinder 10 is reduced, more lubricating oil can be positioned around the lubricating gap b, the lubricating oil film in the lubricating gap b can not be interrupted on the premise of adopting low-viscosity lubricating oil, and the lubricating oil can not be turbulent.
It is to be understood that reference to inward in this embodiment means inward in a direction toward the axis 20 of the crankshaft 20 and outward in a direction away from the axis of the crankshaft 20.
Further, the diameter of the first port 31 is larger than the diameter of the second port 33. Therefore, the lubricating oil in the lubricating oil channel can be effectively supplied to the first oil port 31, and after a stable oil film is formed in the lubricating gap b, the lubricating oil enters the storage space, so that the forming speed of the stable oil film in the lubricating gap b is increased, and the lubricating oil can be stably and lowly stored in the oil storage space a.
As shown in fig. 4, the main bearing shell 30 has a main bearing shell oil groove 32 on the inner surface thereof, the main bearing shell oil groove 32 extends along the circumferential direction of the main bearing shell 30, the first oil hole 31 is disposed adjacent to one end of the main bearing shell 30, the second oil hole 33 is disposed adjacent to the other end of the main bearing shell 30, the distance between the center of the first oil hole 31 and one end of the main bearing shell 30 is the same as the distance between the center of the second oil hole and the other end of the main bearing shell 30, and the cross-section of the main bearing shell oil groove 32 is trapezoidal.
Particularly, the main bearing bush 30 is provided with two first oil ports 31 and second oil ports 33 which are symmetrical and unequal, the main bearing bush oil groove 32 is a trapezoidal through oil groove, under the condition of meeting the bearing pressure, the oil can be sufficiently supplied towards the lubricating gap b through the cylinder body oil outlet 12 and the oil storage space a, the contact area is reduced when the normal work of the crankshaft main journal 21 and the main bearing bush 30 is ensured, the friction power consumption is reduced by matching with low-viscosity lubricating oil, meanwhile, the oil can be continuously supplied to the connecting rod bush through the crankshaft oil passage 23, and therefore the lubricated effect of the engine in the working process can be effectively improved.
Another object of the present invention is to provide a vehicle, including: the engine in the above embodiment.
According to the utility model discloses vehicle, the oil consumption is lower, can satisfy energy saving and emission reduction's requirement now, and engine job stabilization nature is high moreover, and is with low costs.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An engine, comprising:
the cylinder body (10), wherein a cylinder body oil channel (11) is arranged on the cylinder body (10);
the crankshaft (20) is provided with a plurality of crankshaft main journals (21) and a plurality of crankshaft connecting journals (22), the crankshaft main journals (21) and the crankshaft connecting journals (22) are distributed in a staggered mode, a lubricating gap (b) is formed between each crankshaft main journal (21) and the corresponding cylinder body (10), and the lubricating gap (b) is communicated with the cylinder body oil channel (11); wherein
The crankshaft main journal (21) is provided with a crankshaft oil inlet (211) communicated with the lubricating gap (b), the crankshaft connecting journal (22) is provided with a crankshaft oil outlet (221), and a crankshaft oil passage (23) is formed between the crankshaft oil inlet (211) and the crankshaft oil outlet (221).
2. The engine according to claim 1, characterized in that the end of the block oil passage (11) is formed with a block oil outlet (12) that communicates with the lubrication gap (b), and the axis of the block oil outlet (12) is offset with respect to the axis of the block oil passage (11).
3. The engine according to claim 2, characterized in that the cylinder outlet (12) is an oblong hole, the cross-sectional area of the cylinder outlet (12) gradually increasing in a direction towards the axis of the main journal (21).
4. The engine according to claim 1, characterized in that the cylinder block (10) is provided with a cylinder block bearing hole (13), a main shaft bushing (30) is installed in the cylinder block bearing hole (13), and the lubricating gap (b) is formed between the main shaft bushing (30) and the crankshaft main journal (21); wherein
The main shaft bush (30) is provided with a first oil port (31) which is respectively communicated with the cylinder body oil duct (11) and the lubricating gap (b), and an oil storage space (a) communicated with the cylinder body oil duct (11) is arranged between the main shaft bush (30) and the cylinder body bearing hole (13).
5. An engine according to claim 4, characterized in that a portion of the surface of the block bearing hole (13) opposite to the main bearing shell (30) is recessed outward to form the oil storage space (a).
6. The engine of claim 5, characterized in that the inner surface of the main bearing shell (30) has a main bearing shell oil groove (32), the main bearing shell oil groove (32) extending circumferentially of the main bearing shell (30).
7. The engine according to any one of claims 4-6, characterized in that a second oil port (33) is further provided on the main bearing shell (30), the second oil port (33) being in communication with the oil storage space (a) and the lubrication gap (b), respectively.
8. The engine of claim 7, characterized in that the first oil port (31) is disposed adjacent one end of the main bearing shell (30), the second oil port (33) is disposed adjacent the other end of the main bearing shell (30), and a distance between a center of the first oil port (31) and the one end of the main bearing shell (30) is the same as a distance between a center of the second oil port (33) and the other end of the main bearing shell (30).
9. The engine of claim 7, characterized in that the diameter of the first oil port (31) is larger than the diameter of the second oil port (33).
10. A vehicle, characterized by comprising: an engine as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920146819.7U CN209908973U (en) | 2019-01-28 | 2019-01-28 | Engine and vehicle with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920146819.7U CN209908973U (en) | 2019-01-28 | 2019-01-28 | Engine and vehicle with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209908973U true CN209908973U (en) | 2020-01-07 |
Family
ID=69029819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920146819.7U Active CN209908973U (en) | 2019-01-28 | 2019-01-28 | Engine and vehicle with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209908973U (en) |
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2019
- 2019-01-28 CN CN201920146819.7U patent/CN209908973U/en active Active
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