CN117365724B - Piston cooling device and internal combustion engine - Google Patents
Piston cooling device and internal combustion engine Download PDFInfo
- Publication number
- CN117365724B CN117365724B CN202311425887.4A CN202311425887A CN117365724B CN 117365724 B CN117365724 B CN 117365724B CN 202311425887 A CN202311425887 A CN 202311425887A CN 117365724 B CN117365724 B CN 117365724B
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- piston
- cooling
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- cylinder
- plunger
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- 238000001816 cooling Methods 0.000 title claims abstract description 138
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 56
- 239000003921 oil Substances 0.000 claims abstract description 112
- 239000010687 lubricating oil Substances 0.000 claims abstract description 63
- 238000002347 injection Methods 0.000 claims abstract description 37
- 239000007924 injection Substances 0.000 claims abstract description 37
- 238000007906 compression Methods 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 7
- 239000005068 cooling lubricant Substances 0.000 abstract description 12
- 238000005507 spraying Methods 0.000 description 21
- 238000000034 method Methods 0.000 description 13
- 239000000446 fuel Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 230000000630 rising effect Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000002269 spontaneous effect Effects 0.000 description 3
- 238000004200 deflagration Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/06—Arrangements for cooling pistons
- F01P3/08—Cooling of piston exterior only, e.g. by jets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/06—Arrangements for cooling pistons
- F01P3/10—Cooling by flow of coolant through pistons
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P2003/006—Liquid cooling the liquid being oil
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The application relates to a piston cooling device and an internal combustion engine, which belong to the technical field of piston cooling, wherein the piston cooling device comprises a nozzle and an oil injection pipeline, the oil injection pipeline is communicated with the nozzle, the oil injection pipeline is used for enabling lubricating oil to pass through the external cooling of a piston, one end of an oil cylinder is communicated with the oil injection pipeline, and the other end of the oil cylinder is communicated with the piston so as to cool the interior of the piston; this application can be through the nozzle pour into behind the cooling lubricant into, cool off the bottom of piston through spouting the oil pipe way, in the plunger messenger cooling lubricant pours into the cooling oil duct in the piston through in the cylinder body, cool off the inside of piston, can make the inside and the outside of piston all can cool off, improved the cooling efficiency to the piston, avoided the piston cooling efficiency not enough, lead to the work efficiency of piston to reduce and life-span to reduce, avoid because the piston heat load is bigger and bigger, lead to because the high temperature makes the piston warp, make the clearance between piston and the internal-combustion engine cylinder body cylinder wall grow.
Description
Technical Field
The application relates to the technical field of piston cooling, in particular to a piston cooling device and an internal combustion engine.
Background
The engine is a thermodynamic cycle system, is a process of converting fuel combustion energy into mechanical energy, and the piston is one of important components of the engine, plays a key role in the engine, and has the following working principle in the engine:
Firstly, the oil-gas mixture entering the engine is ignited by a spark plug, high-temperature and high-pressure gas is generated after combustion, then the gas pushes down the piston to drive the connecting rod and the crankshaft to rotate, and finally, the wheels start to rotate under the drive of the crankshaft. It can be seen that the piston plays a vital role in the engine. However, since the piston is easily thermally deformed by long-time high-temperature and high-pressure operation, the engine performance is affected, and cooling is required to make the engine operate normally.
Methods of piston cooling are varied, such as liquid cooling and air cooling. Liquid cooling is a method of cooling a piston by using a cooling liquid, transferring heat in an engine to a radiator through a circulation system, and radiating heat by air flow, and is also called a liquid cooling type radiating system.
Air cooling is a method of cooling a piston by using external air and radiating heat through cooling fins on the surface of the piston, and is also called as an air cooling type cooling system.
The existing piston structure is a hollow cylinder with one end open, along with the continuous lifting of the power of the internal combustion engine, the heat load of the whole engine is increased, the cooling of the piston is indispensable, the piston is cooled through liquid cooling at present, the piston is mainly sprayed with cooling lubricating oil through a piston cooling nozzle, the piston cooling nozzle is arranged on a cylinder body of the internal combustion engine, the piston nozzle is connected with an oil spraying pipeline, the oil spraying pipeline extends into the piston through one end of the piston open, and then the bottom of the piston is sprayed with the lubricating oil through the piston nozzle for cooling.
However, as power continues to rise, piston thermal loads become greater and greater, and in order to improve fuel economy and reduce accessory power consumption, many internal combustion engines employ low viscosity engine oil while also reducing engine oil pressure. Current piston cooling requires further enhancements.
Disclosure of Invention
The embodiment of the application provides a piston cooling device and an internal combustion engine, which are used for solving the problem that the cooling efficiency of the piston cooling device on a piston is insufficient due to the fact that the power of the existing internal combustion engine is continuously improved in the related technology.
A first aspect of an embodiment of the present application provides a piston cooling apparatus, including:
A nozzle;
The oil injection pipeline is communicated with the nozzle and used for cooling lubricating oil outside the piston;
and one end of the oil cylinder is communicated with the oil injection pipeline, and the other end of the oil cylinder is communicated with the piston so as to cool the interior of the piston.
In some embodiments, the cylinder includes a cylinder body, a plunger disposed within the cylinder body, and a one-way valve disposed within the cylinder body.
In some embodiments, the cylinder body is a hollow structure with two open ends, and one end of the cylinder body, which is close to the oil injection pipeline, is communicated with the oil injection pipeline through the opening;
The one-way valve is arranged on an opening of the cylinder body, which is close to the oil spraying pipeline.
In some embodiments, the one-way valve includes a pressure plate and a compression spring disposed between the pressure plate and the cylinder opening.
In some embodiments, the plunger is slidably disposed in the cylinder, and one end of the plunger protrudes through the opening of the cylinder away from the oil injection pipeline;
The plunger is of a hollow structure with two open ends.
In some embodiments, a return spring is also disposed within the cylinder to move the plunger in a direction away from the one-way valve assembly.
A second aspect of an embodiment of the present application provides an internal combustion engine including:
An internal combustion engine block and piston;
A cooling oil duct is arranged in the piston
In some embodiments, the cooling gallery includes a cooling gallery inlet and a cooling gallery outlet;
And a cooling oil duct inlet of the cooling oil duct is abutted and communicated with an opening at one end of the plunger extending out of the cylinder body.
In some embodiments, an end of the injection conduit remote from the nozzle is directed toward the bottom of the piston.
In some embodiments, the nozzle is coupled to an internal combustion engine block.
The embodiment of the application provides a piston cooling device and an internal combustion engine, wherein after cooling lubricating oil is injected into a nozzle, the bottom of a piston is cooled through an oil injection pipeline, the cooling lubricating oil is injected into a cooling oil duct in the piston through a plunger in a cylinder body, and the interior of the piston is cooled, so that the interior and the exterior of the piston can be cooled, the cooling efficiency of the piston is improved, and the problems of low working efficiency and service life of the piston caused by insufficient cooling efficiency of the piston are avoided.
Through cooling the outside of piston and the inside of piston simultaneously, when making the piston continuously promote power at the internal-combustion engine, avoid because the piston thermal load is bigger and bigger, lead to because high temperature makes the piston warp, make the clearance between piston and the internal-combustion engine cylinder body cylinder wall grow, and then influence compression ratio and the power take off of engine, avoid leading to the piston surface to ablate because high temperature leads to the piston surface, lead to the piston surface to become unsmooth, and then influence the leakproofness between piston and the cylinder wall of internal-combustion engine cylinder body, increase wearing and tearing and oil consumption.
The high temperature is avoided leading to lubricating oil deterioration, losing lubricating property, causing engine abrasion aggravation, even appearing the trouble such as card is dead, avoid the high temperature can make pressure and the temperature in the combustion chamber rise, lead to the fuel spontaneous combustion in the combustion chamber, cause the cylinder burst, can lead to the engine damage in order to improve fuel economy and reduce the annex consumption when serious.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a structure provided by a piston in a downward direction in an embodiment of the present application;
FIG. 2 is a schematic diagram of an embodiment of the present application in which a piston is provided upstream;
fig. 3 is a schematic cross-sectional view of a piston in accordance with an embodiment of the present application.
1. A nozzle; 2, an oil injection pipeline, 3, an oil cylinder, 31, a cylinder body, 32, a plunger, 33, a return spring, 4, a cooling oil duct, 5, an internal combustion engine cylinder body, 6, a compression spring, 7, a pressing plate, 8 and a piston.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The embodiment of the application provides a piston cooling device and an internal combustion engine, which can solve the problem that the cooling efficiency of the piston by the piston cooling device is insufficient due to continuous improvement of the power of the existing internal combustion engine.
Referring to fig. 1-3, a first aspect of an embodiment of the present application provides a piston cooling apparatus comprising:
The nozzle 1, nozzle 1 is used for installing on the internal-combustion engine cylinder body 5 and makes nozzle 1 fixed, and nozzle 1 is connected and communicates with the oil feed port on the internal-combustion engine cylinder body 5, makes the cooling lubricant pour into nozzle 1 through the oil feed port into, and in the rethread nozzle 1 carried to the oil spout pipeline 2, then provides the refrigerated lubricant to piston 8, makes the cooling lubricant cool down piston 8, avoids piston 8 when working.
The oil spraying pipeline 2, the oil spraying pipeline 2 is connected to the nozzle 1, the oil spraying pipeline 2 is communicated with the nozzle 1, after cooled lubricating oil is injected into the nozzle 1, the nozzle 1 enables the cooled lubricating oil to be injected into the oil spraying pipeline 2, and then the cooled lubricating oil can be sprayed into the piston 8 through the guiding of the oil spraying pipeline 2, so that the outside of the piston 8 can be cooled, as shown in fig. 1, the oil spraying pipeline 2 can be preferably in an L shape which turns around a Y axis by 180 degrees, one end opening of the bottom is connected and communicated with the nozzle 1, the other end sprays the cooled lubricating oil for cooling, the position of the oil cylinder 3 can be preferably arranged on a transverse pipeline at the bottom of the oil spraying pipeline 2, the bottom of the oil cylinder 3 is attached to the transverse pipeline at the bottom of the oil spraying pipeline 2, and the side wall of the oil cylinder 3 is attached to and contacted with the pipeline in the vertical direction of the oil spraying pipeline 2.
The oil cylinder 3, the oil cylinder 3 is fixed on the oil spraying pipeline 2, one end of the oil cylinder 3 is communicated with the oil spraying pipeline 2, the other end is communicated with the piston 8, after the nozzle 1 is injected with the cooled lubricating oil, the nozzle 1 enables the cooled lubricating oil to be conveyed into the oil spraying pipeline 2, the cooled lubricating oil can be sprayed out through the pipeline of the oil spraying pipeline 2 and can flow into the oil cylinder 3 when flowing in the oil spraying pipeline 2, the cooled lubricating oil can be conveyed into the piston 8 through acting force of the oil cylinder 3, the cooled lubricating oil can cool the piston 8, and the piston 8 can cool the piston 8.
Through cooling the outside of piston 8 and the inside of piston 8 simultaneously, make piston 8 when the internal-combustion engine continuously promotes power, avoid because piston 8 heat load is bigger and bigger, lead to because high temperature makes piston 8 warp, make the clearance between piston 8 and the cylinder wall of internal-combustion engine cylinder body 5 grow, and then influence compression ratio and the power take off of engine, avoid because high temperature leads to piston 8 surface ablation, lead to piston 8 surface to become unsmooth, and then influence the leakproofness between piston 8 and the cylinder wall of internal-combustion engine cylinder body 5, increase wearing and tearing and oil consumption.
The high temperature is avoided leading to lubricating oil deterioration, losing lubricating property, causing engine abrasion aggravation, even appearing the trouble such as card is dead, avoid the high temperature can make pressure and the temperature in the combustion chamber rise, lead to the fuel spontaneous combustion in the combustion chamber, cause the cylinder burst, can lead to the engine damage in order to improve fuel economy and reduce the annex consumption when serious.
In some alternative embodiments, referring to fig. 1-2, in the piston cooling device, the oil cylinder 3 includes a cylinder 31, a plunger 32 disposed in the cylinder 31, and a one-way valve disposed in the cylinder 31, wherein the cylinder 31 is a hollow structure with two open ends, the cylinder 31 is communicated with the oil injection pipeline 2 through an opening near one end of the oil injection pipeline 2, and after cooling oil enters the nozzle 1, the cooling oil is injected into the cylinder 31 through the oil injection pipeline 2, so that the cylinder 31 is filled with the cooling oil, and the interior of the piston 8 is cooled.
The plunger 32 is in a hollow columnar structure, the two ends of the column of the plunger 32 are turned outwards to form an outer edge, the outer edge of one end of the plunger 32 is connected with the piston 8 and communicated with the interior of the piston 8, the other end of the plunger 32 is arranged in the interior of the cylinder 31, the outer edge of one end of the plunger is in slidable fit contact with the inner wall of the cylinder 31, the plunger 32 is prevented from swinging in a clearance manner when sliding in the cylinder 31, the opening at the other end of the plunger 32 cannot be in contact with the piston 8, cooling lubricating oil cannot be conveyed into the interior of the piston 8, the outer edge of the column plays a guiding role, meanwhile, a space below one end of the plunger 32 in the cylinder 31 is formed into a state close to sealing through the outer edge of the column, the cooling lubricating oil in the space can be extruded when the plunger 32 is downwards, the cooling lubricating oil can only be sprayed out through the opening of the plunger 32, the pressure in the space is pressurized through the extruding pressure, the pressure in the space is increased, the cooling lubricating oil can be sprayed into the interior of the piston 8, the piston 8 cannot enter the interior of the piston 8, or the cooling efficiency is prevented from being too little, and the cooling efficiency is reduced.
The plunger 32 can be pushed down along with the lowering of the piston 8, and the position can be restored up by the elastic force of the return spring 33.
The opening that the check valve was used for making between cylinder body 31 and the oil spout pipeline 2 open can closing, also offered the opening on the lateral wall that oil spout pipeline 2 and cylinder body 31 contacted, the opening on the oil cylinder 3 and the oil spout pipeline 2 contact one end and the opening on the oil spout pipeline 2 intercommunication each other and connect and form a intercommunication mouth, the check valve just sets up on the opening of cylinder body 31, be used for switching this intercommunication mouth, can make the cooling lubricant injection cylinder body 31 through oil spout pipeline 2 when opening, when closing, can make plunger 32 when pressurizing down to cylinder body 31, avoid cooling lubricant can leak through the extrusion of intercommunication mouth, lead to unable blowout through plunger 32, through closing the check valve, can make the cooling lubricant in cylinder body 31 guarantee only an opening when injecting into piston 8, play the effect of direction to the injection direction of cooling lubricant.
In some alternative embodiments, referring to fig. 1-2, in the piston cooling device, the one-way valve comprises a pressing plate 7 and a compression spring 6 arranged between the pressing plate 7 and an opening of a cylinder body 31, wherein the diameter of the compression spring 6 is larger than that of the opening of the cylinder body 31 near one end of the oil spraying pipeline 2, the compression spring 6 is prevented from being too small in diameter to fall from the opening of the cylinder body 31, and the pressing plate 7 cannot be restored, and one end of a return spring 33 is fixed with one side of the pressing plate 7 far from the compression spring 6.
When the piston 8 is driven to move downwards, the plunger 32 is driven to move towards the direction of the one-way valve, when the plunger 32 is pressed downwards, cooling lubricating oil is injected into the cylinder body 31 at the moment, the plunger 32 is pressed downwards to compress the space of the cooling lubricating oil in the cylinder body 31, the pressure in the cylinder body 31 is changed due to the fact that the volume of the cooling lubricating oil in the space is unchanged, the pressure of the cooling lubricating oil is increased, namely the pressure plate 7 can be pressed by the pressure of the cooling lubricating oil, the pressure plate 7 moves towards an opening communicated between the cylinder body 31 and the oil injection pipeline 2 until the opening communicated between the cylinder body 31 and the oil injection pipeline 2 is covered, the cooling lubricating oil can be prevented from flowing back into the oil injection pipeline 2 again through the opening communicated between the cylinder body 31 and the oil injection pipeline 2 after being pressed, the cooling lubricating oil can not return into the oil injection pipeline 2, and the cooling lubricating oil can be sprayed out only through the plunger 32 after being pressed, and then enters the piston 8 for cooling.
When the piston 8 is driven to rise, the plunger 32 is pushed to rise by the elastic force of the return spring 33 at this time, so as to keep contact communication with the piston 8, the cooling lubricating oil in the cylinder 31 is extruded and sprayed out by the plunger 32 being pressed down, the space in the cylinder 31 is increased after the plunger 32 rises, but the volume of the cooling lubricating oil is reduced, so that the pressure in the cylinder 31 is reduced, then the pressing plate 7 is raised by the elastic force of the compression spring 6, the opening communicated between the cylinder 31 and the oil spraying pipeline 2 is reopened, and the cooling lubricating oil entering the oil spraying pipeline 2 is re-entered into the cylinder 31, so that the cooling lubricating oil used next time is stored in the cylinder 31.
In some alternative embodiments, as shown in fig. 1-2, the plunger 32 is in a hollow column structure, the plunger 32 comprises a column body, two ends of the column body of the plunger 32 are turned outwards to form outer edges, one outer edge of one end of the plunger 32 is connected with the piston 8 and is communicated with the interior of the piston 8, the other end of the plunger 32 is arranged in the cylinder 31, and the outer edge of one end of the plunger is arranged in the cylinder 31 and is in slidable fit contact with the inner wall of the cylinder 31, so that when the plunger 32 slides in the cylinder 31, the plunger 32 is prevented from swinging in a clearance way, an opening at the other end of the plunger 32 cannot be in contact with the piston 8, cooling lubricating oil cannot be conveyed into the interior of the piston 8, the guiding effect is achieved through the outer edge of the column body, and meanwhile, a near-sealed state is formed for a space below one end of the plunger 32 in the cylinder 31 through the outer edge of the column body.
The plunger 32 can squeeze the cooling lubricant in the space when going down, so that the cooling lubricant can be ejected only through the opening of the plunger 32, and the pressure in the space is pressurized by the squeezing pressure, so that the pressure of the cooling lubricant is increased, and the cooling lubricant can be ejected into the piston 8, thereby avoiding the problem that the cooling efficiency is reduced due to insufficient pressure or too little pressure.
When the piston 8 is driven to move downwards, the plunger 32 extends out of the cylinder 31 and is communicated with one end of the piston 8, the piston 8 which moves downwards is also pressed downwards to drive the plunger 32 to move towards the direction of the one-way valve, when the plunger 32 is pressed downwards, cooling lubricating oil is injected into the cylinder 31 at the moment, the plunger 32 is pressed downwards to compress the space of the cooling lubricating oil in the cylinder 31, the pressure in the cylinder 31 is changed due to the compression of the space, the pressure of the cooling lubricating oil is increased, the one-way valve can be closed by the pressure of the cooling lubricating oil, the cooled lubricating oil cannot return into the oil spraying pipeline 2, meanwhile, one end of the plunger 32 connected with the piston 8 is pressed downwards to be abutted by the piston 8, the end part of the plunger 32 is sealed, and when the plunger 32 is pressed downwards, the cooling lubricating oil is sprayed out only through a hollow channel in the plunger 32 and then enters the interior of the piston 8 for cooling through the hollow channel of the plunger 32.
When the piston 8 is driven to rise, one end of the plunger 32 extending out of the cylinder body 31 is not fixedly connected with the piston 8, so that the plunger 32 cannot rise along with the rising of the piston 8, when the piston 8 rises, the plunger 32 is pressed down by the piston 8 and is reduced by the elastic force of the return spring 33, at the moment, the plunger 32 can rise along with the rising of the piston 8 along with the elastic pushing of the return spring 33, contact communication with the piston 8 is kept, when the next downward movement of the piston 8 caused by skew inclination is avoided, the opening of the plunger 32 cannot be communicated with the piston 8, lubricating oil for cooling cannot smoothly enter the piston 8, so that the plunger 32 can be kept synchronous with the movement of the piston 8 at the moment through the arrangement of the return spring 33, the lubricating oil for cooling can continuously enter the piston 8 for cooling, and when the piston 8 rises synchronously, the plunger 32 rises, the cylinder body 31 is pressed down by the plunger 32 and is sprayed out, the space in the cylinder body 31 is increased along with the rising of the elastic pushing of the return spring 33, the lubricating oil for cooling is reduced, the volume in the cylinder body 31 is reduced, and the lubricating oil for cooling can enter the cylinder body 31 again, namely the cooling channel can be cooled down by opening the valve 31, and the lubricating oil for cooling channel can enter the next time, and the cooling channel can be cooled down.
Through the repeated rising and falling of the plunger 32 along with the piston 8, the cooled lubricating oil can be continuously injected into the piston 8 for cooling, so that the excessive temperature in the piston 8 is avoided, and the cooling efficiency of the piston 8 is improved.
Referring to fig. 1-3, a second aspect of the embodiment of the present application provides an internal combustion engine, which includes an internal combustion engine cylinder 5 and a piston 8, wherein a cooling oil duct 4 is provided in the piston 8, wherein an end of a plunger 32 extending out of the cylinder 31 is connected to and communicated with the cooling oil duct 4, and when cooling lubricating oil enters the cylinder 31, the cooling lubricating oil is injected into the cooling oil duct 4 through the plunger 32, so that the interior of the piston 8 is cooled, and the cooling efficiency is improved.
The cooling oil duct 4 is an annular channel, and is located in the head of the piston 8, and the cooling oil duct 4 includes a cooling oil duct inlet and a cooling oil duct outlet, the cooling oil duct inlet of the cooling oil duct 4 is communicated with the opening of the plunger 32, the cooling oil duct outlet of the cooling oil duct 4 is located at the back of the head of the piston 8, and the back of the piston 8 is one side connected with the rod of the piston 8, which can be also understood as one side of the injection pipeline 2.
The working principle of the internal combustion engine is that when the automobile starts, the piston 8 moves up and down in the internal combustion engine cylinder 5, four basic processes of air suction, compression, deflagration and exhaust are completed, when the piston 8 moves downwards, the pressure in the internal combustion engine cylinder 5 is reduced, the valve is opened, the piston 8 slowly moves downwards from the top of the internal combustion engine cylinder 5, the pressure in the internal combustion engine cylinder 5 is reduced, and the mixture of gasoline and air is sucked into the internal combustion engine cylinder 5.
After the intake stroke is completed, the piston 8 starts to move upwards, the valve is closed, the mixture of gasoline and air in the internal combustion engine cylinder 5 is compressed, in the process, the pressure and the temperature in the internal combustion engine cylinder 5 are increased, the mixture is more easy to burn, when the piston 8 moves to the highest point, an ignition system can emit electric sparks to the mixture in the internal combustion engine cylinder 5, the mixture is triggered to burn, high-temperature and high-pressure gas is generated, the piston 8 is pushed to move downwards, after the deflagration stroke is completed, the piston 8 moves upwards, an exhaust valve is opened, and the waste gas is discharged out of the internal combustion engine cylinder 5. After the exhaust stroke is completed, the piston 8 returns to its original position and the next cycle is started.
The working principle and the working process of the application are as follows:
When the piston 8 is driven to move downwards, the plunger 32 extends out of the cylinder 31 and is communicated with the piston 8, the piston 8 which moves downwards is also extruded downwards to drive the plunger 32 to move towards the direction of the one-way valve, when the plunger 32 is pressed downwards, cooling lubricating oil is injected into the cylinder 31 at the moment, the plunger 32 is pressed downwards to enable the space of the cooling lubricating oil in the cylinder 31 to be compressed, the pressure in the cylinder 31 is changed due to the compression of the space, the pressure of the cooling lubricating oil is increased, the pressure plate 7 can be pressed by the pressure of the cooling lubricating oil, the pressure plate 7 moves towards the opening communicated between the cylinder 31 and the oil injection pipeline 2 until the opening communicated between the cylinder 31 and the oil injection pipeline 2 is covered, the cooled lubricating oil can be prevented from flowing back into the oil injection pipeline 2 again through the opening communicated between the cylinder 31 and the oil injection pipeline 2 after being pressed downwards, the cooled lubricating oil can not return into the oil injection pipeline 2, meanwhile, the end connected with the plunger 32 and the piston 8 is pressed downwards and is abutted by the piston 8, the end of the plunger 32 is sealed, and when the pressure is applied, the cooling lubricating oil is only sprayed into the hollow piston 32 through the hollow piston 32 after being pressed, and the cooling lubricating oil is sprayed into the hollow piston 32 through the hollow piston 32 after the pressure is pressed.
When the piston 8 is driven to rise, one end of the plunger 32 extending out of the cylinder body 31 is not fixedly connected with the piston 8, so that the plunger 32 cannot rise along with the rising of the piston 8, when the piston 8 rises, the plunger 32 is pressed down by the piston 8 and is reduced by the elastic force of the return spring 33, at the moment, the plunger 32 can rise along with the rising of the piston 8 along with the elastic pushing of the return spring 33, contact communication with the piston 8 is maintained, when the next downward movement of the piston 8 caused by skew inclination is avoided, an opening of the plunger 32 cannot be communicated with the piston 8, lubricating oil for cooling cannot smoothly enter the piston 8, so that the plunger 32 can be kept synchronous with the movement of the piston 8 at any moment through the arrangement of the return spring 33, the lubricating oil for cooling can continuously enter the piston 8 for cooling, and when the piston 8 rises synchronously, the plunger 32 rises, the cylinder body 31 is pushed down by the plunger 32 to enable internal cooling lubricating oil to be extruded and sprayed out, the space in the cylinder body 31 to rise along with the rising of the return spring 33 is increased, the volume of the cooling lubricating oil can be reduced, the cooling oil can be compressed into the cooling channel 2 through the pressure plate 31, and then the cooling channel 2 can be opened through the pressure reducing spring 31, and the cooling channel 2 can be communicated with the cooling channel 2.
The plunger 32 is repeatedly lifted and lowered along with the piston 8, so that cooled lubricating oil can be continuously injected into the piston 8 for cooling, the cooling efficiency of the piston 8 is improved, the problems that the piston 8 is deformed due to the fact that the heat load of the piston 8 is larger and larger, the gap between the piston 8 and the cylinder wall of the cylinder body 5 of the internal combustion engine is enlarged due to the fact that the high temperature is caused, the compression ratio and the power output of the engine are affected, the surface of the piston 8 is prevented from being ablated due to the fact that the surface of the piston 8 is not smooth due to the fact that the high temperature is caused, the tightness between the piston 8 and the cylinder wall of the cylinder body 5 of the internal combustion engine is affected, abrasion and oil consumption are increased, the lubricating oil is prevented from being deteriorated due to the high temperature, lubricating performance is lost, engine abrasion is caused, even jamming and other faults are avoided, the pressure and the temperature in the combustion chamber are prevented from being raised, fuel in the combustion chamber is spontaneous, the cylinder is caused, the engine is damaged due to the fact that the fuel economy is improved, and the accessory power consumption is reduced.
In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present application and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, or indirectly connected via an intervening medium, or may be in communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
It should be noted that in the present application, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311425887.4A CN117365724B (en) | 2023-10-31 | 2023-10-31 | Piston cooling device and internal combustion engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311425887.4A CN117365724B (en) | 2023-10-31 | 2023-10-31 | Piston cooling device and internal combustion engine |
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| CN117365724A CN117365724A (en) | 2024-01-09 |
| CN117365724B true CN117365724B (en) | 2025-02-14 |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100216786B1 (en) * | 1996-12-11 | 1999-09-01 | 정몽규 | Piston Cooling Structure |
| FR2844003B1 (en) * | 2002-09-02 | 2006-06-16 | Bontaz Centre Sa | MULTI-PROJECTION SPRINKLER FOR ENGINE COOLING, AND ENGINES EQUIPPED WITH SUCH SPRAYERS |
| DE102004047549A1 (en) * | 2004-09-30 | 2006-04-20 | Daimlerchrysler Ag | Apparatus for controlling a piston cooling of a reciprocating internal combustion engine |
| DE102005061059A1 (en) * | 2005-12-21 | 2007-06-28 | Mahle International Gmbh | Piston for internal combustion engine has piston head side regions of gudgeon-pin hub reinforced radially inward, and oil outflow borings directed to these regions |
| KR20120002262A (en) * | 2010-06-30 | 2012-01-05 | 현대중공업 주식회사 | Integral cast iron piston with nozzle cooling |
| JP5747618B2 (en) * | 2011-04-01 | 2015-07-15 | マツダ株式会社 | Oil supply device for piston for internal combustion engine |
| AT514089B1 (en) * | 2013-09-04 | 2014-10-15 | Avl List Gmbh | Internal combustion engine with at least one cylinder |
| JP6439751B2 (en) * | 2016-06-03 | 2018-12-19 | トヨタ自動車株式会社 | Piston cooling system |
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