CN212717601U - Engine crankshaft and engine - Google Patents
Engine crankshaft and engine Download PDFInfo
- Publication number
- CN212717601U CN212717601U CN202021322610.0U CN202021322610U CN212717601U CN 212717601 U CN212717601 U CN 212717601U CN 202021322610 U CN202021322610 U CN 202021322610U CN 212717601 U CN212717601 U CN 212717601U
- Authority
- CN
- China
- Prior art keywords
- crankshaft
- engine
- lubricating oil
- journals
- journal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The utility model provides an engine crankshaft and engine. The engine crankshaft of the utility model comprises 2N +1 crankshaft journals, wherein N is a positive integer; the even number of crankshaft journals and bearing bushes arranged on the crankshaft journals form lubricating oil passages communicated with the two crankshaft journals which are adjacent in the front and the back. The utility model discloses an engine crankshaft's lubricating-oil duct sets up fairly simplely, can reduce the leakage of lubricating oil to be favorable to reducing the power consumption of lubricating-oil pump.
Description
Technical Field
The utility model relates to the technical field of engines, especially, relate to an engine crankshaft and engine with lubricating-oil duct.
Background
The engine comprises two large mechanisms and a five large system, wherein the two large mechanisms comprise a crank connecting rod mechanism and a valve actuating mechanism; the five major systems include a lubrication system, a cooling system, an ignition system, a fuel supply system, and a start-up system.
Among them, the lubrication system is an indispensable component in the engine. When the engine works, the friction surfaces, such as the crankshaft journal and the bearing bush, the piston ring and the cylinder wall, the timing gear pair and the like, do relative movement at a very high speed, and the friction between the friction surfaces not only increases the power consumption in the engine and causes the surface abrasion of parts in the engine; and a large amount of heat is generated to melt the surface of some parts in the engine, so that the engine cannot operate normally. Therefore, in order to ensure the normal operation of the engine, the surfaces of the relatively moving parts in the engine must be lubricated by a lubricating system, i.e., a layer of lubricant, such as engine oil or grease, is coated on the friction surfaces, so that a thin oil film is formed between the friction surfaces, thereby reducing the friction resistance, reducing the power loss, reducing the wear of the engine parts and prolonging the service life of the engine.
In the prior art, the lubricating oil channel of the crankshaft of the engine is arranged more complicatedly, and the phenomenon of lubricating oil leakage is easy to occur, so that the power consumption of the lubricating oil pump is increased.
SUMMERY OF THE UTILITY MODEL
The utility model provides an engine crankshaft and engine, the utility model discloses an engine crankshaft's lubricated oil duct sets up fairly simplely, can reduce the leakage of lubricating oil to be favorable to reducing the power consumption of lubricating-oil pump.
In a first aspect, the present invention provides an engine crankshaft comprising 2N +1 crankshaft journals, wherein N is a positive integer; the even number of crankshaft journals and bearing bushes arranged on the crankshaft journals form lubricating oil passages communicated with the two crankshaft journals which are adjacent in the front and the back.
The engine crankshaft of the utility model comprises 2N +1 crankshaft journals, wherein N is a positive integer; the utility model discloses a make even number crankshaft journal and the axle bush of installing on it form the lubricating oil duct that all communicates with two adjacent crankshaft journals in front and back jointly to can make a crankshaft journal can provide lubricating oil to two crankshaft journals rather than adjacent simultaneously, compare in prior art a crankshaft journal can only provide the setting of lubricating oil to a crankshaft journal, the utility model discloses crankshaft journal and the axle bush that need set up the lubricating oil duct have been reduced to be favorable to simplifying the structure of the lubricating oil duct of engine crankshaft. Under the general condition, the phenomenon of lubricating oil leakage easily appears between bent axle journal and the axle bush, through reducing bent axle journal and the axle bush that sets up the lubricated oil duct to be favorable to reducing the leakage quantity of lubricating oil, and then be favorable to reducing the power consumption of lubricant pump.
In a possible implementation manner, in the engine crankshaft of the present invention, all the bearing bushes mounted on the crankshaft journals are provided with lubricating oil holes penetrating through the bearing bushes;
the lubricating oil hole is communicated with the lubricating oil channel.
In a possible implementation, the utility model discloses an among the engine crankshaft, the axle bush includes the upper bearing shell and the lower bearing shell of mutual amalgamation, the lubrication oil hole is located on the upper bearing shell.
In a possible implementation manner, in the engine crankshaft of the present invention, the inner surface of the bearing bush mounted on the even number of crankshaft journals is provided with a lubricating oil groove communicated with the lubricating oil hole of the bearing bush;
the oil groove is formed as a part of the oil passage.
In a possible implementation manner, the lubricating oil groove is located on the upper bearing bush in the engine crankshaft.
In one possible implementation, the engine crankshaft of the present invention is characterized in that all of the crankshaft journals are hollow structures.
In a possible implementation manner, in the engine crankshaft of the present invention, the hollow cavity of the even number of crankshaft journals is communicated with the lubricating oil groove to form a part of the lubricating oil passage.
In one possible implementation, the lubricating oil passage of the engine crankshaft of the present invention further includes an oil passage disposed inside the crank and the crank shaft journal.
In one possible implementation, in the engine crankshaft of the present invention, N is equal to 2, 3 or 4.
In a second aspect, the present invention provides an engine comprising an engine block and an engine crankshaft as defined in any one of the above.
The engine of the utility model comprises an engine body and an engine crankshaft, wherein the engine crankshaft comprises 2N +1 crankshaft journals, wherein N is a positive integer; the utility model discloses a make even number crankshaft journal and the axle bush of installing on it form the lubricating oil duct that all communicates with two adjacent crankshaft journals in front and back jointly to can make a crankshaft journal can provide lubricating oil to two crankshaft journals rather than adjacent simultaneously, compare in prior art a crankshaft journal can only provide the setting of lubricating oil to a crankshaft journal, the utility model discloses crankshaft journal and the axle bush that need set up the lubricating oil duct have been reduced to be favorable to simplifying the structure of the lubricating oil duct of engine crankshaft. Under the general condition, the phenomenon of lubricating oil leakage easily appears between bent axle journal and the axle bush, through reducing bent axle journal and the axle bush that sets up the lubricated oil duct to be favorable to reducing the leakage quantity of lubricating oil, and then be favorable to reducing the power consumption of lubricant pump.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the present embodiment or the prior art will be briefly described below, and it is obvious that the drawings in the following description are part of the embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural view of an engine crankshaft and a lubricating oil passage disposed inside the engine crankshaft according to a first embodiment of the present invention;
fig. 2 is a schematic structural view of an upper bearing shell mounted on an even number of crankshaft journals according to a first embodiment of the present invention;
fig. 3 is a schematic structural view of a lower bearing shell installed on an even number of crankshaft journals according to an embodiment of the present invention.
Description of reference numerals:
10-crankshaft journal;
21-upper bearing bush;
211-lubricating oil holes;
212-a lubrication groove;
22-lower bearing shell;
30-a crank;
40-crankshaft journal;
50-lubricating oil channel.
Detailed Description
The existing automobile engine comprises two large mechanisms and a five large system, wherein the two large mechanisms comprise a crank connecting rod mechanism and a valve actuating mechanism; the five major systems include a lubrication system, a cooling system, an ignition system, a fuel supply system, and a start-up system.
Among them, the lubrication system is an indispensable component in the engine. When the engine works, the friction surfaces, such as the crankshaft journal and the bearing bush, the piston ring and the cylinder wall, the timing gear pair and the like, do relative movement at a very high speed, and the friction between the friction surfaces not only increases the power consumption in the engine and causes the surface abrasion of parts in the engine; and a large amount of heat is generated to melt the surface of some parts in the engine, so that the engine cannot operate normally. Therefore, in order to ensure the normal operation of the engine, the surfaces of the relatively moving parts in the engine must be lubricated by a lubricating system, i.e., a layer of lubricant, such as engine oil or grease, is coated on the friction surfaces, so that a thin oil film is formed between the friction surfaces, thereby reducing the friction resistance, reducing the power loss, reducing the wear of the engine parts and prolonging the service life of the engine.
However, in the prior art, each crankshaft journal of the engine crankshaft needs to provide lubricating oil for the crankshaft journal, that is, a lubricating oil passage needs to be arranged between each crankshaft journal and a bearing bush mounted on each crankshaft journal, so that the lubricating oil passage of the engine crankshaft is complicated; meanwhile, because the pressure of the lubricating oil at each part of the crankshaft journal is different, the lubricating oil in the lubricating oil channel cannot enter the crankshaft journal with higher pressure of the lubricating oil, so that excessive lubricating oil leaks from the position between the crankshaft journal and the bearing bush, the energy of the lubricating oil is wasted, and the power consumption of the lubricating oil pump is increased.
In order to solve the technical problem, the utility model provides an engine crankshaft, this engine crankshaft form the lubricating oil duct that all communicates with two adjacent crank axle journals in front and back jointly through making even number crank axle journal and the axle bush of installing on it to can make a crank axle journal can provide lubricating oil to two adjacent crank axle journals with it simultaneously, compare in prior art one crank axle journal can only provide the setting of lubricating oil to a crank axle journal, the utility model discloses the crank axle journal and the axle bush that need set up the lubricating oil duct have been reduced, thereby have not only simplified the structure of the lubricating oil duct of engine crankshaft; and be favorable to reducing the leakage quantity of lubricating oil, and then be favorable to reducing the power consumption of lubrication oil pump.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Example one
Fig. 1 is a schematic structural view of an engine crankshaft and a lubricating oil passage disposed inside the engine crankshaft according to a first embodiment of the present invention; fig. 2 is a schematic structural view of an upper bearing shell mounted on an even number of crankshaft journals according to a first embodiment of the present invention; fig. 3 is a schematic structural view of a lower bearing shell installed on an even number of crankshaft journals according to an embodiment of the present invention.
Referring to fig. 1-3, the present embodiment provides an engine crankshaft comprising 2N +1 crankshaft journals 10, where N is a positive integer; the even number of crank journals 10 and the bearing bushes mounted thereon together form a lubricating oil passage 50 communicating with both the front and rear adjacent crank journals 40.
In concrete implementation, the engine crankshaft comprises 2N +1 crankshaft journals 10, wherein N is a positive integer, two opposite cranks 30 are arranged between two adjacent crankshaft journals 10, and a crankshaft is arranged between the two opposite cranks 30. The crankshaft journal 10 is provided with a bearing bush, and in order that relative movement between the crankshaft journal 10 and the bearing bush does not cause abrasion of the crankshaft journal 10 and the bearing bush or generate a large amount of heat, a friction surface between the crankshaft journal 10 and the bearing bush needs to be lubricated; similarly, bearings are mounted on crankshaft journal 40, and in order for relative movement between crankshaft journal 40 and the bearings not to cause wear or generate significant heat in crankshaft journal 40 and the bearings, it is necessary to lubricate the frictional surfaces between crankshaft journal 40 and the bearings. Therefore, in the present embodiment, the even number of crankshaft journals 10 and the bearing bushes mounted thereon jointly form the lubricating oil passages 50 communicated with the two crankshaft journals 40 adjacent in the front and back, and when the engine is in operation, the lubricating oil from the lubricating oil pump enters between the crankshaft journals 10 and the bearing bushes to lubricate the crankshaft journals 10 and the bearing bushes; meanwhile, the lubricating oil entering between the crankshaft journal 10 and the bearing shell can enter the two crankshaft journals 40 adjacent to each other in the front and rear direction through the lubricating oil passage 50, so that the crankshaft journals 40 and the bearings are lubricated. Therefore, the structure of a lubricating oil channel of the engine crankshaft is simplified, the leakage amount of lubricating oil is reduced, the waste of lubricating oil energy is reduced, and the power consumption of a lubricating oil pump is reduced.
The engine crankshaft of the present embodiment includes 2N +1 crankshaft journals 10, where N is a positive integer; the even number of crankshaft journals 10 and the bearing bushes mounted on the crankshaft journals form lubricating oil channels 50 communicated with the two crankshaft journals 40 adjacent in the front and the back together, so that one crankshaft journal 10 can simultaneously provide lubricating oil for the two crankshaft journals 40 adjacent to the crankshaft journal 10. Under the general condition, the phenomenon of lubricating oil leakage easily appears between bent axle journal and the axle bush, through reducing bent axle journal and the axle bush that sets up the lubricated oil duct to be favorable to reducing the leakage quantity of lubricating oil, and then be favorable to reducing the power consumption of lubricant pump.
In the engine crankshaft of the present embodiment, all the bearing bushes mounted on the crankshaft journal 10 are provided with the lubricating oil holes 211 penetrating through the bearing bushes, and the lubricating oil holes 211 communicate with the lubricating oil passages 50.
In the concrete implementation, lubricating oil pumped out from a lubricating oil pump of an engine can enter a lubricating oil channel through a lubricating oil hole on a bearing bush and finally reaches the surface of a crankshaft journal so as to lubricate the crankshaft journal and a bearing; meanwhile, a part of the lubricating oil entering through the lubricating oil hole can permeate between the crankshaft journal and the bearing bush to lubricate the crankshaft journal and the bearing bush, so that the friction surface of the engine is prevented from being abraded or a large amount of heat is generated to influence the normal work of the engine, and the service life of the engine is prolonged.
Referring to fig. 2 and 3, in the engine crankshaft of the present embodiment, the bearing shells may include an upper bearing shell 21 and a lower bearing shell 22 which are fitted to each other, and in one possible implementation, the lubrication oil hole 211 may be provided in the upper bearing shell 21.
During concrete implementation, the bearing bushes are arranged into an upper bearing bush and a lower bearing bush which are mutually spliced, so that the upper bearing bush and the lower bearing bush can be conveniently mounted and dismounted on a crankshaft journal, and the bearing bushes on the crankshaft of the engine can be conveniently dismounted, repaired and replaced. Meanwhile, the lubricating oil holes are formed in the upper bearing bush, so that the lubricating oil pipes can be conveniently connected and arranged.
In other implementation manners, the lubricating oil hole may also be disposed on the lower bearing shell according to actual needs, as long as the requirements of this embodiment can be met, and details are not described here.
Further, referring to fig. 2, in the engine crankshaft of the present embodiment, the inner surface of the bearing shell mounted on the even-numbered crankshaft journals 10 is provided with the lubricating oil groove 212 communicating with the lubricating oil hole 211 of the bearing shell; and, a lubricating oil groove 212 is formed as a part of the lubricating oil passage 50.
During specific implementation, lubricating oil pumped out from a lubricating oil pump of an engine can enter a lubricating oil groove through a lubricating oil hole in a bearing bush, and oil in the lubricating oil groove can finally reach the surface of a crankshaft journal through a part of lubricating oil passages communicating the lubricating oil groove and the crankshaft journal so as to lubricate the crankshaft journal and a bearing; meanwhile, a part of the lubricating oil entering the lubricating oil groove through the lubricating oil hole can permeate between the crankshaft journal and the bearing bush to lubricate the crankshaft journal and the bearing bush, so that the friction surface of the engine is prevented from being worn or a large amount of heat is generated to influence the normal work of the engine, and the service life of the engine is prolonged.
Referring to fig. 2, in one possible implementation, in the engine crankshaft of the present embodiment, the lubricating oil groove 211 may be located on the upper bearing shell 21. Thereby the lubrication groove 212 and the lubrication hole 211 intercommunication of being convenient for on the one hand, on the other hand, in the course of working of axle bush, only need on the upper bearing bush 21 process lubrication hole 211 and lubrication groove 212 simultaneously can, and then be favorable to simplifying the manufacturing process of axle bush.
In another possible implementation manner, the lubrication groove may also be partially disposed on the upper bearing shell, and partially disposed on the lower bearing shell, and a part of the lubrication groove on the upper bearing shell may be capable of communicating with the lubrication hole on the upper bearing shell. The lubricating oil groove is formed in the upper bearing bush, the other part of the lubricating oil groove is formed in the lower bearing bush, so that the length of the lubricating oil groove is prolonged, the lubricating oil groove can better convey lubricating oil, and the friction surface between the crankshaft journal and the bearing bush can be better lubricated.
It can be understood that when the lubricating oil hole is positioned on the lower bearing bush, the lubricating oil groove can be only arranged on the lower bearing bush, so that the lubricating oil groove is convenient to communicate with the lubricating oil hole on one hand, and on the other hand, in the machining process of the bearing bush, the lubricating oil hole and the lubricating oil groove only need to be simultaneously machined on the lower bearing bush, thereby being beneficial to simplifying the machining and manufacturing process of the bearing bush; or, the lubrication groove can be partly arranged on the upper bearing bush, the other part is arranged on the lower bearing bush, and the part of the lubrication groove on the lower bearing bush can be communicated with the lubrication hole on the lower bearing bush, so that the length of the lubrication groove can be prolonged, the lubrication groove can better convey lubrication oil, and the friction surface between the crankshaft journal and the bearing bush can be better lubricated.
In order to reduce the mass of the engine crankshaft and the centrifugal force generated during the movement, all the crankshaft journals 10 in the engine crankshaft of the present embodiment are hollow. Meanwhile, in order to reduce stress concentration, the connecting parts of the crankshaft journal, the crankshaft and the crank can be set to be arc chamfers, so that the service life of the engine crankshaft is prolonged.
Further, in the engine crankshaft of the present embodiment, the hollow cavities of the even-numbered crankshaft journals 10 may communicate with the lubricating oil groove 212, so that the hollow cavities of the even-numbered crankshaft journals 10 can be formed as a part of the lubricating oil passage 50.
During specific implementation, lubricating oil pumped out from a lubricating oil pump of an engine can enter a lubricating oil groove through a lubricating oil hole in a bearing bush, oil in the lubricating oil groove can enter a hollow cavity of a crankshaft journal communicated with the lubricating oil groove, and finally reaches the surface of the crankshaft journal through a part of lubricating oil channels communicated with the hollow cavity and the crankshaft journal so as to lubricate the crankshaft journal and a bearing; meanwhile, a part of the lubricating oil entering the lubricating oil groove through the lubricating oil hole can permeate between the crankshaft journal and the bearing bush to lubricate the crankshaft journal and the bearing bush, so that the friction surface of the engine is prevented from being worn or a large amount of heat is generated to influence the normal work of the engine, and the service life of the engine is prolonged. In addition, the lubricating oil entering the hollow cavity can flow between the crankshaft journal and the bearing bush under the action of centrifugal force so as to lubricate the friction surfaces of the crankshaft journal and the bearing bush.
Referring to fig. 1, further, in the engine crankshaft of the present embodiment, the lubricating oil passage 50 further includes a sub oil passage provided inside the crank 30 and the crank journal 40.
During specific implementation, lubricating oil pumped out from a lubricating oil pump of an engine can enter a lubricating oil groove through a lubricating oil hole in a bearing bush, oil in the lubricating oil groove can enter a hollow cavity of a crankshaft journal communicated with the lubricating oil groove, and the oil in the hollow cavity can finally reach the surface of the crankshaft journal through a crank and a sub-oil passage on the crank so as to lubricate the crankshaft journal and a bearing; meanwhile, a part of the lubricating oil entering the lubricating oil groove through the lubricating oil hole can permeate between the crankshaft journal and the bearing bush to lubricate the crankshaft journal and the bearing bush, so that the friction surface of the engine is prevented from being worn or a large amount of heat is generated to influence the normal work of the engine, and the service life of the engine is prolonged. In addition, the lubricating oil entering the hollow cavity can flow between the crankshaft journal and the bearing bush under the action of centrifugal force so as to lubricate the friction surfaces of the crankshaft journal and the bearing bush.
Further, in the engine crankshaft of the present embodiment, N may be equal to 2, 3, or 4.
Referring to fig. 1, the present embodiment is described by taking N equal to 3 as an example, that is, the engine crankshaft includes 7 crankshaft journals, wherein a second crankshaft journal from left to right and a bearing bush mounted thereon jointly form a lubricating oil channel communicated with two crankshaft journals at both ends of the second crankshaft journal, a fourth crankshaft journal from left to right and a bearing bush mounted thereon jointly form a lubricating oil channel communicated with two crankshaft journals at both ends of the fourth crankshaft journal, and a sixth crankshaft journal from left to right and a bearing bush mounted thereon jointly form a lubricating oil channel communicated with two crankshaft journals at both ends of the sixth crankshaft journal. Therefore, lubricating oil passages do not need to be arranged between the first crankshaft journal and the bearing bush, between the third crankshaft journal and the bearing bush, between the fifth crankshaft journal and the bearing bush and between the seventh crankshaft journal and the bearing bush, and therefore the structure of the lubricating oil passages of the engine crankshaft is simplified, the leakage amount of lubricating oil is reduced, and the power consumption of the lubricating oil pump is reduced.
Example two
The present embodiment provides an engine including an engine block and an engine crankshaft.
The engine of the utility model comprises an engine body and an engine crankshaft, wherein the engine crankshaft comprises 2N +1 crankshaft journals, wherein N is a positive integer; the utility model discloses a set up the even number crankshaft journal and the axle bush of installing on it and form the lubricating oil duct that all communicates with two adjacent crankshaft journals in front and back jointly to can make a crankshaft journal can provide lubricating oil to two crankshaft journals adjacent with this crankshaft journal simultaneously, compare in prior art a crankshaft journal can only provide the setting of lubricating oil to a crankshaft journal, the utility model discloses crankshaft journal and the axle bush that need set up the lubricating oil duct have been reduced to be favorable to simplifying the structure of the lubricating oil duct of engine crankshaft. Under the general condition, the phenomenon of lubricating oil leakage easily appears between bent axle journal and the axle bush, through reducing bent axle journal and the axle bush that sets up the lubricated oil duct to be favorable to reducing the leakage quantity of lubricating oil, and then be favorable to reducing the power consumption of lubricant pump.
The engine crankshaft of the present embodiment is the same as the engine crankshaft provided in the first embodiment, and can bring about the same or similar technical effects, and details are not repeated herein, and reference may be made to the above embodiments specifically.
In the description of the present invention, it is to be understood that the terms "top," "bottom," "upper," "lower" (if present), and the like, are used in the orientation or positional relationship shown in the drawings for convenience in describing the present invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The terms "first" and "second" in the description and claims of the present application and the description of the above-described figures are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. An engine crankshaft comprising 2N +1 crankshaft journals, wherein N is a positive integer; the even number of crankshaft journals and bearing bushes arranged on the crankshaft journals form lubricating oil passages communicated with the two crankshaft journals which are adjacent in the front and the back.
2. The engine crankshaft of claim 1, wherein all bearing shells mounted on the crankshaft journals are provided with lubrication holes extending through the bearing shells;
the lubricating oil hole is communicated with the lubricating oil channel.
3. The engine crankshaft of claim 2, wherein said bearing shells comprise an upper bearing shell and a lower bearing shell which are fitted to each other, and said oil hole is formed in said upper bearing shell.
4. The engine crankshaft as claimed in claim 3, wherein the inner surface of the bearing shell mounted on the even-numbered crankshaft journals is provided with a lubrication groove communicating with the lubrication hole of the bearing shell;
the oil groove is formed as a part of the oil passage.
5. An engine crankshaft according to claim 4, wherein the oil groove is located on the upper bearing shell.
6. The engine crankshaft of claim 1, wherein all crankshaft journals are of hollow construction.
7. The engine crankshaft as claimed in claim 5, wherein the hollow cavities of the even-numbered crankshaft journals communicate with the oil groove to form a part of the oil passage.
8. The engine crankshaft of claim 7, wherein said oil gallery further comprises a sub-oil gallery disposed inside the crank and inside the crankshaft journal.
9. An engine crankshaft according to any of claims 1-7, wherein N equals 2, 3 or 4.
10. An engine comprising an engine block and an engine crankshaft according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021322610.0U CN212717601U (en) | 2020-07-08 | 2020-07-08 | Engine crankshaft and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021322610.0U CN212717601U (en) | 2020-07-08 | 2020-07-08 | Engine crankshaft and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212717601U true CN212717601U (en) | 2021-03-16 |
Family
ID=74965958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021322610.0U Active CN212717601U (en) | 2020-07-08 | 2020-07-08 | Engine crankshaft and engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212717601U (en) |
-
2020
- 2020-07-08 CN CN202021322610.0U patent/CN212717601U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102667198B (en) | For the bearing shell sheet of vehicle internal combustion engine | |
| CN100516490C (en) | Method for reducing friction between piston and cylinder wall of internal-combustion engine, and Oil saving piston | |
| CN102741510A (en) | Engine lubrication device | |
| CN212717601U (en) | Engine crankshaft and engine | |
| CN210799066U (en) | Arrangement structure of engine cylinder block lubricating oil way | |
| CN201705410U (en) | Oil pump for engine double-lubrication system | |
| KR101724998B1 (en) | Lubrication device of engine | |
| CN112412777A (en) | Lubricating system for plunger pump and plunger pump | |
| US20140144726A1 (en) | Centrifugal Lubricating Apparatus | |
| CN202056044U (en) | Four-row cylindrical roller bearing assembly for novel diaphragm pump | |
| CN105275532B (en) | A kind of multimode free-piston internal combustion engine generator force feed system | |
| CN210317515U (en) | Diesel engine frame and diesel engine | |
| CN212250170U (en) | Camshaft structure | |
| CN106812564B (en) | Engine and vehicle with same | |
| CN202327013U (en) | All-synchronizer gear box | |
| CN110778671A (en) | Crankshaft assembly suitable for piston type two-stroke aircraft engine | |
| CN214196438U (en) | Engine and crankshaft | |
| CN221170359U (en) | Engine crankshaft, engine and vehicle | |
| CN213928723U (en) | Lubricating system for plunger pump and plunger pump | |
| CN216666238U (en) | Lubricated oil circuit structure of aircraft low-speed heavy load joint bush | |
| CN211174264U (en) | Idle gear shaft with lubricating structure and kinematic pair thereof | |
| CN219045427U (en) | Single-cylinder motorcycle engine crankshaft lubricating system | |
| CN220118491U (en) | Wear-resistant bushing | |
| CN214727931U (en) | Stamping welding air chamber support assembly with self-lubricating supporting structure | |
| CN217481357U (en) | Crankshaft for infinitely variable speed engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |