CN112761806A - Oil supply structure based on accurate lubrication of integral piston - Google Patents
Oil supply structure based on accurate lubrication of integral piston Download PDFInfo
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- CN112761806A CN112761806A CN202110113423.4A CN202110113423A CN112761806A CN 112761806 A CN112761806 A CN 112761806A CN 202110113423 A CN202110113423 A CN 202110113423A CN 112761806 A CN112761806 A CN 112761806A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/16—Pistons having cooling means
- F02F3/20—Pistons having cooling means the means being a fluid flowing through or along piston
- F02F3/22—Pistons having cooling means the means being a fluid flowing through or along piston the fluid being liquid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention discloses an oil supply structure based on accurate lubrication of an integral piston, which comprises a piston skirt part, a piston head part, a cooling oil cavity, an oil supply channel plane of a piston pin hole and a piston body, wherein the piston head part is arranged inside the piston body, a combustion chamber is arranged inside the piston body on one side of the piston head part, the outer wall of the combustion chamber is fixedly connected with the piston skirt part, a cooling oil cavity is arranged inside the piston body below the combustion chamber, the outer wall of the cooling oil cavity is fixedly connected with the piston skirt part, a piston inner cavity is arranged inside the piston body below the cooling oil cavity, the outer wall of the piston inner cavity is fixedly connected with the piston skirt part, and the piston skirt part is arranged inside the piston body on one side of. The invention not only realizes the high-efficiency oil supply of the oil supply structure for precisely lubricating the integral piston, increases the utilization rate of lubricating oil, but also lightens the weight of the piston and improves the bearing strength.
Description
Technical Field
The invention relates to the technical field of oil supply structures, in particular to an oil supply structure based on accurate lubrication of an integral piston.
Background
The piston is one of the most important parts of the internal combustion engine, transmits power under the action of high temperature and high pressure for a long time, and the structure and the working state directly determine the dynamic property, the reliability, the economy, the service life and the like of the internal combustion engine. Due to continuous improvement of the market on the requirements of the internal combustion engine, high power and light weight become mainstream development, a new challenge is followed, how to ensure the high power of the piston, the friction and the abrasion of the piston in the working process can be accelerated by the thermal load and the mechanical load brought by high strengthening, a series of fatigue problems even the piston fails, and the traditional oil cavity oil duct cannot rapidly and accurately supply oil and lubricate the piston, so that the lubrication problem of the piston is increasingly prominent.
In order to solve the problem, the piston is ensured to reasonably distribute heat flow and perform accurate lubrication on the basis of bearing high mechanical load and high heat flow density gas from the structural aspect, wherein the oil passage is used as an important lubricating and oil supplying structure of the piston head, and the structural design of the oil passage has important practical significance.
The type of oil supply structure on the market is various and can basically meet the use requirements of people, but certain problems still exist, and the specific problems include the following points:
(1) when the existing oil supply structure is used, the high-efficiency oil supply of the oil supply structure for accurately lubricating the integral piston is generally inconvenient to realize, so that the convenience degree of the oil supply structure in use is seriously influenced;
(2) the existing oil supply structure is not convenient to increase the utilization rate of lubricating oil when in use, thereby greatly influencing the reliability of the oil supply structure when in use;
(3) the existing oil supply structure is not convenient to reduce the weight of the piston and improve the bearing strength when in use, thereby bringing great trouble to people.
Disclosure of Invention
The invention aims to provide an oil supply structure based on precise lubrication of an integral piston, and aims to solve the problems that the oil supply structure in the background art is inconvenient to realize high-efficiency oil supply of the oil supply structure for precise lubrication of the integral piston, the utilization rate of lubricating oil is increased, the weight of the piston is reduced, and the bearing strength is improved.
In order to achieve the purpose, the invention provides the following technical scheme: an oil supply structure based on precise lubrication of an integral piston comprises a piston skirt part, a piston head part, a cooling oil cavity, an oil supply channel plane of a piston pin hole and a piston body, a piston head is arranged in the piston body, a combustion chamber is arranged in the piston body at one side of the piston head, the outer wall of the combustion chamber is fixedly connected with the piston skirt part, a cooling oil cavity is arranged in the piston body below the combustion chamber, the outer wall of the cooling oil cavity is fixedly connected with the piston skirt part, a piston inner cavity is arranged in the piston body below the cooling oil cavity, the outer wall of the piston inner cavity is fixedly connected with a piston skirt part, the piston skirt part is arranged in the piston body at one side of the piston inner cavity, and the outer wall of the piston skirt is fixedly connected with the piston body, a pin hole cavity is arranged in the piston body on one side of the piston skirt, and the outer wall of the pin hole cavity is fixedly connected with the piston skirt.
Preferably, the outer wall of the piston head is provided with a piston ring area, and the outer wall of the piston ring area is fixedly connected with the piston head.
Preferably, the inside in piston ring district is equipped with first annular, and piston ring district internally mounted below the first annular has the second annular, piston ring district internally mounted below the second annular has the third annular, and the outer wall and the piston ring district fixed connection of third annular.
Preferably, an oil supply channel is arranged inside the piston body, a piston pin oil supply channel is arranged inside the piston body, and a first oil channel outlet is arranged inside the piston body on one side of the piston pin oil supply channel.
Preferably, a piston pin hole oil supply channel is installed in the piston body on one side of the first oil channel outlet, and a second oil channel outlet is installed in the piston body on one side of the piston pin hole oil supply channel.
Preferably, an oil supply channel plane of the piston pin is installed inside the piston body, and an oil supply channel plane of the piston pin hole is installed inside the piston body on one side of the oil supply channel plane of the piston pin.
Compared with the prior art, the invention has the beneficial effects that: the oil supply structure not only realizes the high-efficiency oil supply of the oil supply structure for accurately lubricating the integral piston, increases the utilization rate of lubricating oil, but also lightens the weight of the piston and improves the bearing strength;
(1) three parallel piston ring areas are processed on the outer surface of the piston head and respectively comprise a piston skirt part, the piston head and a cooling oil cavity, an oil supply duct is formed in the piston body, a piston pin oil supply duct, a first oil duct outlet, a piston pin hole oil supply duct and a second oil duct outlet are formed in the oil supply duct, the cooling oil cavity is located between a combustion chamber and the piston head, and the top of the cooling oil cavity is slightly lower than the top of a first ring groove so as to reduce the temperature of the first ring groove; the bottom of the cooling oil cavity is flush with the bottom of the second ring groove to enhance the heat dissipation of the piston, the part above the third ring groove forms a piston head, the part below the third ring groove forms a piston skirt, the inner cavity of the piston adopts an arch design to enable the pin hole cavity to bear force uniformly, and meanwhile, the wall thickness between the inner cavity of the piston and the piston head is reduced to increase the internal volume and achieve the purposes of reducing the weight of the piston and improving the bearing strength;
(2) the piston pin oil supply channel is positioned on the oil supply channel plane of the piston pin at the middle position of the pin hole cavity and the connecting rod small end and is parallel to the direction of the pin hole cavity, two oil channels are designed on the plane, one end of the oil supply channel is connected with the cooling oil cavity, the other end of the oil supply channel is communicated with the cooling oil cavity, the first oil channel outlet is designed at the central position, so that engine oil in the cooling oil cavity flows out from the first oil channel outlet through the oil channels, the piston pin exposed outside in the middle of the pin hole cavity and the connecting rod small end is directly and precisely lubricated, the traditional lubricating pin can only carry out splash lubrication through the piston inner cavity, the pertinence is poor, the utilization rate of the cooling oil is low, the oil supply channel for the piston pin hole oil channel is positioned on the oil supply channel plane of the piston pin hole at the middle position of the pin hole cavity, each pin hole, the engine oil in the cooling oil cavity flows out of the oil outlet through the oil duct, the pin hole cavity and the pin are directly and accurately lubricated, the friction abrasion of the cooperation of the pin hole cavity and the pin can be reduced, the cooperation clearance is further reduced, the impact noise is reduced, and the oil duct and the oil outlet can be used for accurately lubricating the piston pin and the pin hole cavity, so that the utilization rate of the oil is greatly improved;
(3) the oil duct in the integral piston can be designed to play a role in precise lubrication, the oil outlet of the oil supply duct can lubricate the piston pin and the pin hole cavity, the traditional splash lubrication mode is not relied on, the position plane of the oil duct can be flexibly adjusted according to the performance requirement of the piston, the oil supply duct is more targeted, the lubrication position is more precise, the utilization rate of cooling oil is higher, the oil supply structure for precise lubrication of the integral piston is realized, the utilization rate of the lubricating oil is increased, the weight of the piston is reduced, and the bearing strength is improved;
(4) the 3D printing technology can be used for processing a complex structure which cannot be processed by the traditional process, the limitation on the internal structure of the piston is small, the technical advantage of high flexibility is achieved, the piston can be integrally processed, a processing connection surface generated in the piston in the traditional processing mode is eliminated, the overall performance of the piston is better, when the piston with the structure is processed by the 3D printing technology, the oil storage cavity and other parts of the oil duct can be easily processed and formed in comparison with the traditional casting and forging modes, a die is not needed, and time and labor are saved;
(5) optimizing on the basis of the structure of a traditional piston according to use requirements to form a novel precisely-lubricated integral piston, performing simulation calculation on the performance of an engine to obtain boundary conditions of heat exchange and stress, substituting the boundary conditions into finite element software to calculate the distribution conditions of heat flow, temperature and stress of the piston with the structure, checking whether calculated data meet the requirements, if the calculated data meet the requirements, processing according to a designed structure, performing blank printing, finish machining and surface coating, finally performing a machine experiment, if the calculated data are qualified, completing a design flow, if the calculated data are unqualified, returning to the structural design for redesign calculation, and if the calculated data do not meet the requirements, re-analyzing and performing structural optimization design.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is a schematic cross-sectional view of a piston pin bore oil supply gallery in elevation in accordance with the present invention;
FIG. 3 is a schematic cross-sectional plan view of the oil supply passage of the piston pin of the present invention;
FIG. 4 is a flowchart of an example embodiment of a technical process.
In the figure: 1. a piston skirt; 2. a piston head; 3. cooling the oil cavity; 4. a combustion chamber; 5. an oil supply duct; 501. a piston pin oil supply passage; 502. a first oil passage outlet; 503. a piston pin hole oil supply passage; 504. a second oil passage outlet; 6. a piston ring area; 601. a first ring groove; 602. a second ring groove; 603. a third ring groove; 7. a piston inner cavity; 8. a pin bore cavity; 11. the oil supply channel plane of the piston pin; 12. the oil supply channel plane of the piston pin hole; 13. a piston body.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, an embodiment of the present invention is shown: an oil supply structure based on integral piston precise lubrication comprises a piston skirt portion 1, a piston head portion 2, a cooling oil cavity 3, an oil supply channel plane 12 of a piston pin hole and a piston body 13, wherein the piston head portion 2 is arranged inside the piston body 13, a combustion chamber 4 is arranged inside the piston body 13 on one side of the piston head portion 2, the outer wall of the combustion chamber 4 is fixedly connected with the piston skirt portion 1, the cooling oil cavity 3 is arranged inside the piston body 13 below the combustion chamber 4, the outer wall of the cooling oil cavity 3 is fixedly connected with the piston skirt portion 1, a piston inner cavity 7 is arranged inside the piston body 13 below the cooling oil cavity 3, the outer wall of the piston inner cavity 7 is fixedly connected with the piston skirt portion 1, the piston skirt portion 1 is arranged inside the piston body 13 on one side of the piston inner cavity 7, the outer wall of the piston skirt portion 1 is fixedly connected with the piston body 13, and a pin hole cavity, the outer wall of the pin hole cavity 8 is fixedly connected with the piston skirt part 1;
a piston ring area 6 is arranged on the outer wall of the piston head 2, the outer wall of the piston ring area 6 is fixedly connected with the piston head 2, a first ring groove 601 is arranged inside the piston ring area 6, a second ring groove 602 is arranged inside the piston ring area 6 below the first ring groove 601, a third ring groove 603 is arranged inside the piston ring area 6 below the second ring groove 602, the outer wall of the third ring groove 603 is fixedly connected with the piston ring area 6, an oil supply oil duct 5 is arranged inside the piston body 13, a piston pin oil supply duct 501 is arranged inside the piston body 13, a first oil duct outlet 502 is arranged inside the piston body 13 on one side of the piston pin oil supply duct 501, a piston pin hole oil supply duct 503 is arranged inside the piston body 13 on one side of the first oil duct outlet 502, a second oil duct outlet 504 is arranged inside the piston body 13 on one side of the piston pin hole oil supply duct 503, and an oil supply duct plane 11 of the piston pin is, an oil supply channel plane 12 of a piston pin hole is arranged in the piston body 13 at one side of the oil supply channel plane 11 of the piston pin;
three parallel piston ring areas 6 are processed on the outer surface of the piston head 2 and respectively comprise a piston skirt part 1, a piston head 2 and a cooling oil cavity 3, an oil supply duct 5 is formed in the piston body 13, a piston pin oil supply duct 501, a first oil duct outlet 502, a piston pin hole oil supply duct 503 and a second oil duct outlet 504 are respectively arranged in the oil supply duct 5, the cooling oil cavity 3 is located between the combustion chamber 4 and the piston head 2, and the top of the cooling oil cavity 3 is slightly lower than the top of the first ring groove 601 so as to reduce the temperature of the first ring groove 601; the bottom of the cooling oil cavity 3 is flush with the bottom of the second ring groove 602 so as to enhance the heat dissipation of the piston, the part above the third ring groove 603 forms a piston head 2, the part below the third ring groove 603 forms a piston skirt part 1, the piston inner cavity 7 adopts an arch design so as to enable the pin hole cavity 8 to bear force uniformly, and meanwhile, the wall thickness between the piston inner cavity 7 and the piston head 2 is reduced so as to increase the internal volume and achieve the purposes of reducing the weight of the piston and improving the force bearing strength;
the piston pin oil supply channel 501 is positioned on the oil supply channel plane 11 of the piston pin at the middle position between the pin hole cavity 8 and the connecting rod small end and is parallel to the direction of the pin hole cavity 8, two oil channels are designed on the plane, one end of the oil supply channel is connected with the cold cooling oil cavity 3, the other end of the oil supply channel is communicated with each other, and a first oil channel outlet 502 is designed at the central position, so that engine oil in the cooling oil cavity 3 flows out from the first oil channel outlet 502 through the oil channels to directly and accurately lubricate the piston pin exposed out in the middle of the pin hole cavity 8 and the connecting rod small end, a traditional lubricating pin can only perform splash lubrication through the inner cavity of the piston, the pertinence is poor, the utilization rate of the cooling oil is low, the oil supply channel 503 for the piston pin hole is positioned on the oil supply channel plane 12 of the piston pin hole at the middle position of the pin hole cavity 8, the oil channel and the oil outlet can precisely lubricate the pin hole cavity 8 and the pin, so that the frictional wear of the fit between the pin hole cavity 8 and the pin can be reduced, the fit clearance can be reduced, the impact noise can be reduced, and the utilization rate of the oil is greatly improved by precisely lubricating the piston pin and the pin hole cavity 8 by the oil channel and the oil outlet;
the oil duct in the integral piston can achieve an accurate lubrication effect, the oil outlet of the oil supply duct can lubricate the piston pin and the pin hole cavity 8, the traditional splash lubrication mode is not relied on, the position plane of the oil duct can be flexibly adjusted according to the performance requirement of the piston, the oil supply duct is more targeted, the lubrication position is more accurate, the utilization rate of cooling oil is higher, the oil supply structure for accurately lubricating the integral piston is realized, the utilization rate of the lubricating oil is increased, the weight of the piston is reduced, and the bearing strength is improved;
the 3D printing technology can be used for processing a complex structure which cannot be processed by the traditional process, the limitation on the internal structure of the piston is small, the technical advantage of high flexibility is achieved, the piston can be integrally processed, a processing connection surface generated in the piston in the traditional processing mode is eliminated, the overall performance of the piston is better, when the piston with the structure is processed by the 3D printing technology with the cooling oil cavity, the oil storage cavity and other parts of the oil channel can be easily processed and formed in comparison with the traditional casting and forging modes, a die is not needed, and time and labor are saved;
optimizing on the basis of the structure of a traditional piston according to use requirements to form a novel precisely-lubricated integral piston, performing simulation calculation on the performance of an engine to obtain boundary conditions of heat exchange and stress, substituting the boundary conditions into finite element software to calculate the distribution conditions of heat flow, temperature and stress of the piston with the structure, checking whether calculated data meet the requirements, if the calculated data meet the requirements, processing according to a designed structure, performing blank printing, finish machining and surface coating, finally performing a machine experiment, if the calculated data are qualified, completing a design flow, if the calculated data are unqualified, returning to the structural design for redesign calculation, and if the calculated data do not meet the requirements, re-analyzing and performing structural optimization design.
The working principle is as follows: when the piston is used, firstly, three parallel piston ring areas 6 are processed on the outer surface of the piston head 2 and respectively comprise a piston skirt part 1, a piston head 2 and a cooling oil cavity 3, an oil supply duct 5 is formed in the piston body 13, a piston pin oil supply duct 501, a first oil duct outlet 502, a piston pin hole oil supply duct 503 and a second oil duct outlet 504 are respectively arranged in the oil supply duct 5, the cooling oil cavity 3 is positioned between the combustion chamber 4 and the piston head 2, and the top of the cooling oil cavity 3 is slightly lower than the top of the first ring groove 601 so as to reduce the temperature of the first ring groove 601; the bottom of the cooling oil cavity 3 is flush with the bottom of the second annular groove 602 to enhance the heat dissipation of the piston, the part above the third annular groove 603 forms a piston head 2, the part below the piston head forms a piston skirt part 1, the piston inner cavity 7 adopts an arch design to enable the pin hole cavity 8 to bear force uniformly, meanwhile, the wall thickness between the piston inner cavity 7 and the piston head 2 is reduced to increase the internal volume, and the purpose of lightening the weight of the piston and improving the bearing strength is achieved, the oil supply channel 501 of the piston pin is positioned on the oil supply channel plane 11 of the piston pin at the middle position of the pin hole cavity 8 and the connecting rod small head and is parallel to the direction of the pin hole cavity 8, two oil channels are designed on the plane, one end of the oil channel is connected with the cooling oil cavity 3, the other end of the oil channel is communicated with each other end, and the first oil channel outlet 502 is designed at the central position, so that the engine oil in the cooling oil, the traditional lubricating pin can only perform splash lubrication through the inner cavity of the piston, has poor pertinence and low utilization rate of cooling oil, is used for enabling an oil supply channel 503 of the piston pin hole to be positioned on an oil supply channel plane 12 of the piston pin hole at the middle position of the pin hole cavity 8, each pin hole cavity 8 is designed with two symmetrical oil channels, one end of each oil channel is connected with the cooling oil cavity 3, the other end of each oil channel is provided with a second oil channel outlet 504 and is positioned in the sixty-degree direction, so that engine oil in the cooling oil cavity 3 flows out from an oil outlet through the oil channels to directly and accurately lubricate the pin hole cavity 8 and the pin, the frictional wear of the matching of the pin hole cavity 8 and the pin can be reduced, the matching gap and the impact noise are reduced, the accurate lubrication of the piston pin and the pin hole cavity 8 by the oil channels and the oil outlet greatly improve the utilization rate of the oil, the design of, the piston structure does not depend on a traditional splash lubrication mode any more, the oil passage position plane can be flexibly adjusted according to the performance requirement of the piston, the piston structure is more targeted, the lubrication position is more accurate, the utilization rate of cooling oil is higher, the oil supply structure for accurately lubricating the integral piston is efficiently supplied, the utilization rate of the lubricating oil is increased, the weight of the piston is reduced, the bearing strength is improved, the cooling oil cavity 3D printing technology can process a complex structure which cannot be processed by the traditional technology, the limitation on the internal structure of the piston is small, the piston structure has the technical advantage of high flexibility, the integral processing can be carried out on the piston, a processing connecting surface generated in the piston in the traditional processing mode is cancelled, the overall performance of the piston is more excellent, when the piston structure is processed by the cooling oil cavity 3D printing technology, the oil storage cavity of the oil passage and other parts can be, time and labor are saved.
Optimizing on the basis of the structure of the traditional piston according to the use requirement to form a novel precisely lubricated integral piston, obtaining heat exchange and stress boundary conditions by carrying out simulation calculation on the performance of an engine, substituting the boundary conditions into finite element software to calculate the distribution conditions of heat flow, temperature and stress of the piston with the structure, checking whether the calculated data meet the requirements, if the calculated data meet the requirements, processing according to a designed structure, printing a blank, carrying out finish machining and surface coating, finally carrying out a machine experiment, if the calculated data are qualified, completing a design flow, if the calculated data are unqualified, returning to the structural design for redesigning calculation, if the calculated data do not meet the requirements, carrying out analysis and structural optimization design again,
and finishing the use work of the oil supply structure.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides an oil feeding structure based on accurate lubricated of integral piston, includes piston skirt portion (1), piston head (2), cooling oil pocket (3), oil supply channel plane (12) and piston body (13) of piston pin hole, its characterized in that: the piston is characterized in that a piston head (2) is arranged inside the piston body (13), a combustion chamber (4) is arranged inside the piston body (13) on one side of the piston head (2), the outer wall of the combustion chamber (4) is fixedly connected with a piston skirt portion (1), a cooling oil chamber (3) is arranged inside the piston body (13) below the combustion chamber (4), the outer wall of the cooling oil chamber (3) is fixedly connected with the piston skirt portion (1), a piston inner chamber (7) is arranged inside the piston body (13) below the cooling oil chamber (3), the outer wall of the piston inner chamber (7) is fixedly connected with the piston skirt portion (1), the piston body (13) on one side of the piston inner chamber (7) is internally provided with the piston skirt portion (1), the outer wall of the piston skirt portion (1) is fixedly connected with the piston body (13), a pin hole cavity (8) is arranged inside the piston body (13) on one side of the piston skirt portion, and the outer wall of the pin hole cavity (8) is fixedly connected with the piston skirt part (1).
2. The oil supply structure based on precise lubrication of an integral piston according to claim 1, wherein: and a piston ring area (6) is arranged on the outer wall of the piston head (2), and the outer wall of the piston ring area (6) is fixedly connected with the piston head (2).
3. The oil supply structure based on precise lubrication of an integral piston according to claim 2, wherein: the inside in piston ring district (6) is equipped with first annular (601), and piston ring district (6) internally mounted of first annular (601) below has second annular (602), piston ring district (6) internally mounted of second annular (602) below has third annular (603), and the outer wall and the piston ring district (6) fixed connection of third annular (603).
4. The oil supply structure based on precise lubrication of an integral piston according to claim 1, wherein: the oil supply channel (5) is arranged inside the piston body (13), the piston pin oil supply channel (501) is arranged inside the piston body (13), and a first oil channel outlet (502) is arranged inside the piston body (13) on one side of the piston pin oil supply channel (501).
5. The oil supply structure based on precise lubrication of an integral piston according to claim 4, wherein: and a piston pin hole oil supply channel (503) is arranged in the piston body (13) at one side of the first oil channel outlet (502), and a second oil channel outlet (504) is arranged in the piston body (13) at one side of the piston pin hole oil supply channel (503).
6. The oil supply structure based on precise lubrication of an integral piston according to claim 1, wherein: an oil supply channel plane (11) of the piston pin is arranged in the piston body (13), and an oil supply channel plane (12) of the piston pin hole is arranged in the piston body (13) on one side of the oil supply channel plane (11) of the piston pin.
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| CN202110113423.4A CN112761806A (en) | 2021-01-27 | 2021-01-27 | Oil supply structure based on accurate lubrication of integral piston |
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| CN202110113423.4A CN112761806A (en) | 2021-01-27 | 2021-01-27 | Oil supply structure based on accurate lubrication of integral piston |
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| CN210343520U (en) * | 2019-06-17 | 2020-04-17 | 北京福田康明斯发动机有限公司 | Lubricating structure of piston connecting rod mechanism, engine and vehicle |
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