CN113847158A - Cylinder of four-stroke internal combustion engine - Google Patents
Cylinder of four-stroke internal combustion engine Download PDFInfo
- Publication number
- CN113847158A CN113847158A CN202111058638.7A CN202111058638A CN113847158A CN 113847158 A CN113847158 A CN 113847158A CN 202111058638 A CN202111058638 A CN 202111058638A CN 113847158 A CN113847158 A CN 113847158A
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- cylinder
- piston
- water
- combustion engine
- 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.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 75
- 238000001816 cooling Methods 0.000 claims abstract description 43
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 abstract description 33
- 239000000446 fuel Substances 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 230000033001 locomotion Effects 0.000 abstract description 5
- 230000002411 adverse Effects 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 14
- 239000007789 gas Substances 0.000 description 11
- 230000006835 compression Effects 0.000 description 9
- 238000007906 compression Methods 0.000 description 9
- 239000002912 waste gas Substances 0.000 description 7
- 239000000919 ceramic Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910052574 oxide ceramic Inorganic materials 0.000 description 2
- 239000011224 oxide ceramic Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910004369 ThO2 Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- ZCUFMDLYAMJYST-UHFFFAOYSA-N thorium dioxide Chemical compound O=[Th]=O ZCUFMDLYAMJYST-UHFFFAOYSA-N 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Images
Classifications
-
- 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
- F02F1/00—Cylinders; Cylinder heads
- F02F1/02—Cylinders; Cylinder heads having cooling means
- F02F1/10—Cylinders; Cylinder heads having cooling means for liquid cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
Abstract
The invention belongs to the field of power machinery, in particular to a four-stroke internal combustion engine cylinder, wherein a cavity is formed by sleeving a cooling shell in the outer wall of a cylinder body, and the characteristic that the specific heat capacity of water absorbs heat is utilized, when the internal combustion engine works, cooling water is injected into the cavity to absorb the heat of the cylinder body, the reciprocating motion of a pneumatic piston can be realized by the pressure of the water and the pressure of a piston in the cylinder body, so that the opening and closing of the cooling water entering the cavity can be realized through the working process of the internal combustion engine per se, the circulation of the cooling water in the cavity is promoted, the high-efficiency heat dissipation of a single cylinder is realized without an external power source, the adverse effect of high temperature on the fuel utilization rate and the structure of the internal combustion engine is reduced, and the normal working state of the cylinder body is further ensured.
Description
Technical Field
The invention belongs to the field of power machinery, and particularly relates to a cylinder of a four-stroke internal combustion engine.
Background
The cylinder of a four-stroke internal combustion engine is a cylindrical metal machine element for guiding a piston to reciprocate linearly in the cylinder, and the internal combustion engine is generally a piston type internal combustion engine, wherein the piston reciprocates in the cylinder body, fuel and air are mixed and combusted in the cylinder body, and the released heat energy enables the cylinder body to generate high-temperature and high-pressure gas. The gas expands to drive the piston to do work, and then the mechanical work is output through a crank-link mechanism or other mechanisms to drive the driven machinery to work. The conversion of heat energy and mechanical energy of internal combustion engine is implemented by using four processes of continuous air intake, compression, power and air exhaust in cylinder body by means of piston to implement a working cycle. The internal combustion engine is widely applied to the fields of power generation, military, buildings, ships and the like by virtue of large output torque and stable power.
As the main component of the internal combustion engine, is limited by the structure, materials and working principle of the internal combustion engine in the prior art, the prior single-cylinder internal combustion engine can not realize high-efficiency heat dissipation and make full use of fuel, the highest fuel utilization rate can only reach 46%, the fuel which is not fully combusted can be discharged as waste gas to cause huge pollution to air, moreover, the heat which can not be dissipated overflows to cause the temperature of the cylinder body to rise, the high temperature can cause the insufficient air input of the cylinder body to cause the output power to fall, and even can cause the material to deform and damage.
In view of the above, in order to overcome the above technical problems, the present invention provides a cylinder for a four-stroke internal combustion engine, which solves the above technical problems.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: according to the four-stroke internal combustion engine cylinder provided by the invention, the heat dissipation capacity and the fuel utilization rate of a single-cylinder internal combustion engine are improved, the situations that the air input of the internal combustion engine is insufficient due to high temperature, the power is reduced, and even materials are deformed and damaged are avoided, and meanwhile, the phenomenon that fuel waste gas which is not fully combusted enters air is reduced, so that the huge pollution to the air is reduced.
The invention provides a cylinder of a four-stroke internal combustion engine, which comprises a cylinder body, a combustion chamber, a piston, a pin hole, a piston pin, a connecting rod, a crankshaft and a flywheel, wherein the piston is arranged in the cylinder body in a sliding manner; the lower end of the piston is provided with a pin hole; the pin hole and the hole at the upper end of the connecting rod are coaxially arranged, and the piston is inserted into the pin hole to realize the rotary connection between the piston and the connecting rod; the lower end of the connecting rod is rotatably connected with the crankshaft through a bearing; one end of the crankshaft is fixedly connected with the flywheel, and the flywheel is driven to rotate together when the crankshaft rotates; an annular cooling shell is sleeved outside the cylinder body; the outer wall of the cylinder body is provided with an annular groove; the cooling shell is inserted into the annular groove and is closed with the outer surface of the cylinder body to form a cavity; rounding the corners of the cooling shell; the wall of the cooling shell is provided with a threaded hole; the upper end of the cooling shell is provided with a water conveying pipeline, one end of the water conveying pipeline is communicated with the water inlet, and the other end of the water conveying pipeline is communicated with the cavity; the lower end of the cooling shell is provided with a drainage pipeline, one end of the drainage pipeline is communicated with the water outlet, and the other end of the drainage pipeline is communicated with the bottom of the cavity; the water outlet and the water inlet are externally connected with the same water tank; the upper end of the cylinder body is provided with a combustion chamber; the inner wall of the combustion chamber is provided with a through hole which penetrates through the cylinder body and the cooling shell; a pneumatic piston is coaxially and slidably arranged in the through hole; the length of the pneumatic piston is smaller than that of the through hole.
Preferably, two ends of the through hole are provided with limiting blocks; the inner surface of the limiting block is fixedly connected with a cushion pad.
Preferably, the drainage pipeline and the water pipeline are internally provided with one-way valves; the water inlet of the one-way valve in the water delivery pipeline is communicated with the water inlet; and a water inlet of a one-way valve in the drainage pipeline is communicated with the chamber.
Preferably, the bottom of the chamber is inclined and the lower part of the chamber is connected with the bottom end of the drainage pipeline.
Preferably, the pneumatic piston is made of high-temperature ceramic materials.
Preferably, the top end of the cylinder body is provided with a valve; the valve is spherical.
The invention has the following beneficial effects:
according to the four-stroke internal combustion engine cylinder, the cooling shell is sleeved in the outer wall of the cylinder body to form the cavity, and the characteristic that specific heat capacity of water absorbs heat is utilized, when the internal combustion engine works, cooling water is injected into the cavity to absorb heat of the cylinder body, reciprocating motion of the pneumatic piston can be realized through the pressure of the water and the pressure of the piston in the cylinder body, so that the cooling water can enter the cavity to be switched on and off in the working process of the internal combustion engine, circulation of the cooling water in the cavity is promoted, efficient heat dissipation of a single cylinder is realized without an external power source, adverse effects of high temperature on the fuel utilization rate and the internal combustion engine structure are reduced, and the cylinder body is further ensured to be in a normal working state.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is an overall schematic view of the present invention;
FIG. 2 is an enlarged view of a portion of the present invention;
FIG. 3 is an enlarged view of the drain end of the present invention;
in the figure: the device comprises a cylinder body 1, a combustion chamber 101, a through hole 102, a water conveying pipeline 103, a water draining pipeline 104, a groove 105, a limiting block 106, a piston 2, a pin hole 201, a piston pin 202, a crank 3, a flywheel 4, a cooling shell 5, a water draining port 6, a pneumatic piston 7, a water inlet 8, an air valve 9, a chamber 10, a threaded hole 11, a cushion pad 12, a one-way valve 13 and a crankshaft 14.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The invention provides a cylinder of a four-stroke internal combustion engine, which comprises a cylinder body 1, a combustion chamber 101, a piston 2, a pin hole 201, a piston pin 202, a connecting rod 3, a crankshaft 14 and a flywheel 4, wherein the piston 2 is arranged in the cylinder body 1 in a sliding way; the lower end of the piston 2 is provided with a pin hole 201; the pin hole 201 and the hole at the upper end of the connecting rod 3 are coaxially arranged, and the piston 2 is rotatably connected with the connecting rod 3 by inserting the piston pin 202 into the pin hole 201; the lower end of the connecting rod 3 is rotatably connected with a crankshaft 14 through a bearing; one end of the crankshaft 14 is fixedly connected with the flywheel 4, and the crankshaft 14 drives the flywheel 4 to rotate together when rotating; an annular cooling shell 5 is sleeved outside the cylinder body 1; the outer wall of the cylinder body 1 is provided with an annular groove 105; the cooling shell 5 is inserted into the annular groove 105 and is closed with the outer surface of the cylinder body 1 to form a cavity 10; rounding the corners of the cooling shell 5; a threaded hole 11 is formed in the wall of the cooling shell 5; the upper end of the cooling shell 5 is provided with a water conveying pipeline 103, one end of which is communicated with the water inlet 8, and the other end of which is communicated with the cavity 10; the lower end of the cooling shell 5 is provided with a drainage pipeline 104, one end of the drainage pipeline is communicated with the drainage outlet 6, and the other end of the drainage pipeline is communicated with the bottom of the cavity 10; the water outlet 6 and the water inlet 8 are externally connected with the same water tank; the upper end of the cylinder body 1 is provided with a combustion chamber 101; the inner wall of the combustion chamber 101 is provided with a through hole 102 which penetrates through the cylinder body 1 and the cooling shell 5; a pneumatic piston 7 is coaxially and slidably arranged in the through hole 102; the length of the pneumatic piston 7 is smaller than that of the through hole 102.
Through inserting two semi-annular cooling shells 5 in the outside recess 105 of annular at cylinder body 1, and 11 for the bolt realize the fit fastening of cooling shell 5 through the screw hole that sets up on two semi-annular casings, the production degree of difficulty has been reduced, establish installation annular cooling shell 5 along annular recess 105 cover at the outer wall of cylinder body 1, annular cooling shell 5 imbeds not only to make bolt-up's cooling shell 5 more firm in the installation of 1 outer wall of cylinder body in recess 105, prevent that cooling shell 5 from taking place longitudinal displacement because of external factors such as vibrations at 1 outer wall of cylinder body, the leakproofness of the cavity 10 that forms of 5 internal surfaces of cooling shell and 1 external surface of cylinder body has also been improved simultaneously.
When the internal combustion engine works, a water inlet 8 at the upper end of the cooling shell 5 absorbs water from a water tank by using a pipeline and fills the cavity 10 with cooling water through a water pipeline 103, when the internal combustion engine enters a compression stroke, a valve 9 at the top of the cylinder body 1 is closed, the inner wall of the cylinder body 1 and the piston 2 form a closed space, under the action of the residual work of the last power stroke and the inertia of the flywheel 4, the piston 2 moves upwards along the inner wall of the cylinder body 1 to compress air, meanwhile, the temperature of the cylinder wall of the cylinder body 1 is increased due to the energy released by the last power stroke and the frequent and rapid reciprocating motion friction of the piston 2, the pressure in the cylinder body 1 in the closed space is increased due to the air compression of the piston 2, high air pressure pushes a pneumatic piston 7 coaxially and slidably arranged in the through hole 102 to move towards the cavity 10 and compresses the volume of the cooling water in the cavity 10, and further presses part of the cooling water to be discharged from a water outlet 6 through a water discharge pipeline 104 at the bottom of the cavity 10, the discharged cooling water returns to the water tank through the external pipeline, and the recycling of the cooling water is realized.
After the compression stroke is finished, the power stroke is started, the valve 9 at the top of the cylinder body 1 is still closed, the inner wall of the cylinder body 1 and the piston 2 form a closed space, fuel is explosively combusted in compressed air under the action of an oil nozzle and a spark plug, so that the gas is violently expanded to generate higher instantaneous gas pressure, the gas pushes the piston 2 to downwards drive the flywheel 4 to transmit power, and the piston can also continuously support one end, close to the chamber 10, of the pneumatic piston 7, and the position state of the pneumatic piston 7 in the through hole 102 in the compression stroke is approximately maintained.
Then, entering an exhaust stroke, opening an exhaust valve 9, at the moment, the cylinder body 1 is not in a sealed state, under the action of the residual work of the power stroke and the inertia of the flywheel 4, the piston 2 which moves to the bottom of the cylinder body 1 to finish power transmission moves upwards along the cylinder body 1, further extruding the space in the cylinder body 1 to discharge the waste gas in the cylinder body 1, at the moment, after the constraint of high-pressure gas in the power stroke is lost, the pneumatic piston 7 moves towards one side of the cylinder body 1 in the through hole 2 under the action of the pressure of cooling water in the cavity 10 and the steam pressure generated by the contact of the cooling water with the high-temperature cylinder wall, generating negative pressure in the cavity 10 in the moving process, further sucking the cooling water from an external water tank through a water pipeline 103 from a water inlet 8, simultaneously extruding the waste gas out of the cylinder body 1 by matching with the piston 2 at the bottom of the cylinder body 1, and improving the exhaust efficiency and speed of the cylinder body 1 in the exhaust stroke, further, the amount of exhaust gas mixed in the cylinder 1 in the next intake stroke is reduced, and the fuel combustion efficiency is further improved.
In the intake stroke, the intake valve 9 is opened, the cylinder body is not in a sealing state at the moment, the piston 2 moves downwards along the inner wall of the cylinder body 1 to suck air under the action of the residual work of the power stroke and the inertia of the flywheel 4, at the moment, under the action of the water pressure, the steam pressure and the negative pressure in the cylinder body 1 in the chamber 10, the position state of the pneumatic piston 7 in the through hole 102 at the exhaust stroke is approximately maintained by the pneumatic piston 7, and then the next compression stroke is waited.
5 corners rounding of cooling shell is handled, improves the structural strength of cavity 10, avoids because cavity 10 produces structural damage to cavity 10 because too big pressure differential or stress are too concentrated, improves the life of cooling shell 5.
Compared with the water cooling and air cooling mode adopted by the traditional single cylinder engine, the cooling shell 5 is sleeved outside the cylinder body 1, the characteristic of large specific heat capacity of water is utilized, the cooling water is directly contacted with the high-temperature cylinder body 1, heat is taken away efficiently, further utilizes the positive pressure and negative pressure transformation caused by different strokes in the cylinder body 1 to be matched with the water pressure and steam pressure in the chamber 10 to realize the reciprocating movement of the pneumatic piston 7 in the through hole 102, further realizes the pumping drainage of the cooling water in the chamber 10, the replacement and the flow of the cooling water in the cavity 10 are realized on the premise of no external power device, the cooling effect is further improved, and then improve the life, stability and the fuel utilization ratio of cylinder, simultaneously, in order to guarantee can not produce too much external shock in the cooling process, improve the stability of cavity 10, so, install two pneumatic pistons 7 at the bilateral symmetry of cylinder body 1.
As a specific embodiment of the present invention, two ends of the through hole 102 are provided with a limiting block 106; the inner surface of the limiting block 106 is fixedly connected with the cushion pad 12;
both the pressure inside the cylinder 1 and the pressure of the water and steam inside the chamber 10, generate a great force in the closed space to push the pneumatic piston 7 to move, in order to ensure that the displacement distance of the pneumatic piston 7 does not affect the normal operation of the cylinder and the chamber 10, therefore, the limit blocks 106 are arranged at the two ends of the through hole 102, so as to limit the displacement range of the pneumatic piston 7, ensure that the pneumatic piston 7 is always positioned in the through hole 102 and cannot interfere with the normal work of the cylinder, meanwhile, in order to avoid the impact between the pneumatic piston 7 and the limit block 106 from damaging the structures of the pneumatic piston 7 and the limit block 106 under the action of pressure, therefore, the buffer pads 12 are arranged on the impact surfaces of the limit block 106 and the pneumatic piston 7, so that the impact of the pneumatic piston 7 on the limit block 106 is weakened through buffering, the vibration is reduced, and the service life and the working stability of the pneumatic piston 7 are improved.
As a specific embodiment of the present invention, the drainage pipeline 104 and the water pipeline 103 are both provided with a one-way valve 13 inside; the water inlet of the one-way valve 13 in the water delivery pipeline 103 is communicated with the water inlet 8; the water inlet of the one-way valve 13 in the water discharge pipeline 104 is communicated with the chamber 10;
in order to realize the circulation of the cooling water in the chamber 10 under the action of the pneumatic piston 7, one-way valves 13 are arranged in the water discharge pipeline 104 and the water discharge pipeline 103, so that when the pressure in the chamber 10 is positive, the one-way valve 13 of the water discharge pipeline 103 is closed, and the one-way valve 13 of the water discharge pipeline 104 is opened, so that part of the cooling water which absorbs heat is discharged; when negative pressure exists in the chamber 10, the check valve 13 of the water pipeline 103 is opened, the check valve 13 of the water drainage pipeline 104 is closed, and new cooling water with low temperature can be sucked from the water pipeline 103 by the negative pressure, so that the realization of the cooling water circulation effect in the chamber 10 is ensured, and the cooling efficiency is improved.
In an embodiment of the present invention, the bottom of the chamber 10 is inclined and the lower part is connected to the bottom end of the drainage pipe 104.
The bottom of the chamber 10 is provided with a slope and is the same as the drainage pipeline 104, so that the cooling water or water vapor which partially absorbs heat can flow out from the drainage port 5 along the drainage pipeline 106 more smoothly under the action of gravity or pressure, and the drainage port 5 can be externally connected with a water tank, so that the cooling water can be reused.
As a specific embodiment of the present invention, the pneumatic piston 7 is made of a high-temperature ceramic material;
high temperature ceramics can be classified into high temperature oxide ceramics (e.g., Al) according to the main chemical composition of the material2O3、ZrO、MgO、CaO、ThO2、Cr2O3、SiO2、BeO、3Al2O3·2SiO2Etc.), carbide ceramics, boride ceramics, nitride ceramics, silicide ceramics, etc., generally have high temperature resistance, high strength, high hardness, good electrical, thermal and chemical stability. In order to make the cooperation between the water pressure and the steam in the chamber 10 and the air pressure in the cylinder 1 realize the displacement drive of the pneumatic piston 7 efficiently, Cr which has lighter weight and meets the requirements of high temperature, high pressure, wear resistance and sealing property on the working environment is selected2O3The high-temperature oxide ceramic is used as a manufacturing material of the pneumatic piston 7, so that negative effects of large resistance caused by excessive self weight on the realization of the working effect of the pneumatic piston 7 and the improvement of the working efficiency of the cylinder are reduced, the pneumatic piston 7 can normally work in the high-strength and high-density working environment, and the service life and the stability of the cylinder and the pneumatic piston 7 are further improved.
As a specific embodiment of the present invention, the air valve 9 at the upper end of the cylinder 1 is provided in a spherical shape;
two air valve 9 of cylinder body 1 upper end establish to the sphere, compare the plane valve and the hemisphere valve among the prior art, spherical curved surface more accords with fluid dynamics, makes the cylinder all more smooth and easy at the in-process that admits air and exhaust, has shortened the time that admits air and exhaust needs, has improved the work efficiency of cylinder.
The working principle is as follows: by sleeving the annular cooling shell 5 on the outer wall of the cylinder body 1 along the annular groove 105, a closed chamber 10 is formed between the inner surface of the cooling shell 5 and the outer surface of the cylinder body 1, when the internal combustion engine works, the water inlet 8 at the upper end of the cooling shell 5 is filled with cooling water into the chamber 10 through the water delivery pipeline 103, when the piston enters the compression stroke of the internal combustion engine, the valve 9 at the top of the cylinder body 1 is closed, the inner wall of the cylinder body 1 and the piston 2 form a closed space, under the action of the rest work of the last power stroke and the inertia of the flywheel 4, the piston 2 moves upwards along the inner wall of the cylinder body 1 so as to compress air to cause the air pressure in the cylinder to rise, the high air pressure can push the pneumatic piston 7 which is arranged in the through hole 102 in a coaxial sliding mode to move towards the chamber 10 and compress the volume of cooling water in the chamber 10, thereby forcing part of the cooling water to be discharged from the drain port 6 through the drain pipe 104 at the bottom of the chamber 10.
The air valve 9 at the top of the cylinder body 1 is still closed when the cylinder body 1 enters a power stroke, a closed space is formed by the inner wall of the cylinder body 1 and the piston 2, fuel is explosively combusted in compressed air under the action of an oil nozzle and a spark plug, so that gas is violently expanded to generate higher instantaneous gas pressure, the gas pushes the piston 2 to downwards drive the flywheel 4 to transmit power out, and the piston can also continuously support one end, close to the chamber 10, of the pneumatic piston 7, and the position state of the pneumatic piston 7 in the through hole 102 during the compression stroke is approximately maintained. Then, entering an exhaust stroke, opening an exhaust valve 9, at the moment, the cylinder body 1 is not in a sealed state, under the action of the residual work of the power stroke and the inertia of the flywheel 4, the piston 2 which moves to the bottom of the cylinder body 1 to finish power transmission moves upwards along the cylinder body 1, further extruding the space in the cylinder body 1 to discharge the waste gas in the cylinder body 1, at the moment, after the constraint of high-pressure gas in the power stroke is lost, the pneumatic piston 7 moves towards one side of the cylinder body 1 in the through hole 2 under the action of the pressure of cooling water in the cavity 10 and the steam pressure generated by the contact of the cooling water with the high-temperature cylinder wall, generating negative pressure in the cavity 10 in the moving process, further sucking the cooling water from an external water tank through a water pipeline 103 from a water inlet 8, simultaneously extruding the waste gas out of the cylinder body 1 by matching with the piston 2 at the bottom of the cylinder body 1, and improving the exhaust efficiency and speed of the cylinder body 1 in the exhaust stroke, further reducing the waste gas mixed in the cylinder body 1 in the next intake stroke, further improving the combustion efficiency of the fuel, in the intake stroke, the intake valve 9 is opened, at the moment, the cylinder body is not in a sealed state, under the residual work of the power stroke and the inertia effect of the flywheel 4, the piston 2 moves downwards along the inner wall of the cylinder body 1 to suck air, at the moment, under the action of the water pressure, the steam pressure and the negative pressure in the cylinder body 1 in the chamber 10, the pneumatic piston 7 approximately keeps the position state of the pneumatic piston 7 in the through hole 102 in the exhaust stroke, and then waits for the next compression stroke, the process realizes the reciprocating movement of the pneumatic piston 7 by utilizing the pressure difference principle and realizes the extraction and the discharge of the cooling water in the chamber 10 by combining with the structural characteristic of the one-way valve 13, further realizes the automatic circulation of the cooling water, ensures that the cooling water can smoothly take the absorbed heat away and has new automatic supplement of the cooling water, therefore, the negative effects of high temperature on the air cylinder are reduced while the high-efficiency heat dissipation of the air cylinder is realized and the working efficiency is improved.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A four-stroke internal combustion engine cylinder comprising a cylinder block (1), a combustion chamber (101), a piston (2), a pin hole (201), a piston pin (202), a connecting rod (3), a crankshaft (14), and a flywheel (4), characterized in that: a piston (2) is arranged in the cylinder body (1) in a sliding way; the lower end of the piston (2) is provided with a pin hole (201); the pin hole (201) and an opening at the upper end of the connecting rod (3) are coaxially arranged, and the piston (2) is rotatably connected with the connecting rod (3) by inserting the piston pin (202) into the pin hole (201); the lower end of the connecting rod (3) is rotatably connected with a crankshaft (14) through a bearing; one end of the crankshaft (14) is fixedly connected with the flywheel (4), and the crankshaft (14) drives the flywheel (4) to rotate together when rotating; an annular cooling shell (5) is sleeved outside the cylinder body (1); the outer wall of the cylinder body (1) is provided with an annular groove (105); the cooling shell (5) is inserted into the annular groove (105) and is closed with the outer surface of the cylinder body (1) to form a cavity (10); the corners of the cooling shell (5) are rounded; a threaded hole (11) is formed in the wall of the cooling shell (5); the upper end of the cooling shell (5) is provided with a water conveying pipeline (103), one end of the water conveying pipeline is communicated with the water inlet (8), and the other end of the water conveying pipeline is communicated with the cavity (10); the lower end of the cooling shell (5) is provided with a drainage pipeline (104) one end of which is communicated with the drainage outlet (6) and the other end of which is communicated with the bottom of the cavity (10); the outer parts of the water outlet (6) and the water inlet (8) are respectively connected with the same water tank through pipelines; the upper end of the cylinder body (1) is provided with a combustion chamber (101); the inner wall of the combustion chamber (101) is provided with a through hole (102) which penetrates through the cylinder body (1) and the cooling shell (5); a pneumatic piston (7) is coaxially and slidably arranged in the through hole (102); the length of the pneumatic piston (7) is less than that of the through hole (102).
2. A cylinder for a four-stroke internal combustion engine as claimed in claim 1 wherein: two ends of the through hole (102) are provided with limit blocks (106); the inner surface of the limiting block (106) is fixedly connected with a cushion pad (12).
3. A cylinder for a four-stroke internal combustion engine as claimed in claim 1 wherein: one-way valves (13) are arranged in the drainage pipeline (104) and the water pipeline (103); a water inlet of a one-way valve (13) in the water conveying pipeline (103) is communicated with the water inlet (8); the water inlet of the one-way valve (13) in the drainage pipeline (104) is communicated with the chamber (10).
4. A cylinder for a four-stroke internal combustion engine as claimed in claim 1 wherein: the bottom of the chamber (10) is inclined and the lower part is connected with the bottom end of the drainage pipeline (104).
5. A cylinder for a four-stroke internal combustion engine as claimed in claim 1 wherein: the pneumatic piston (7) is made of high-temperature ceramic materials.
6. A cylinder for a four-stroke internal combustion engine as claimed in claim 1 wherein: the top end of the cylinder body (1) is provided with a valve (9); the air valve (9) is spherical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111058638.7A CN113847158A (en) | 2021-09-10 | 2021-09-10 | Cylinder of four-stroke internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111058638.7A CN113847158A (en) | 2021-09-10 | 2021-09-10 | Cylinder of four-stroke internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113847158A true CN113847158A (en) | 2021-12-28 |
Family
ID=78973819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111058638.7A Pending CN113847158A (en) | 2021-09-10 | 2021-09-10 | Cylinder of four-stroke internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113847158A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH28134A (en) * | 1903-02-14 | 1904-04-15 | Adolf Vogt | Internal combustion engine |
| CN103470389A (en) * | 2013-09-18 | 2013-12-25 | 无锡华源凯马发动机有限公司 | Electrically-driven wind and water dual-cooling type aluminium alloy single-cylinder diesel engine |
| CN106979070A (en) * | 2017-03-09 | 2017-07-25 | 斯太尔动力（常州）发动机有限公司 | Water-cooled vertical single cylinder diesel engine with disjunctor airframe structure |
| CN109306924A (en) * | 2018-11-23 | 2019-02-05 | 湖北科技学院 | A kind of IC engine air-inlet-exhaust system |
-
2021
- 2021-09-10 CN CN202111058638.7A patent/CN113847158A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH28134A (en) * | 1903-02-14 | 1904-04-15 | Adolf Vogt | Internal combustion engine |
| CN103470389A (en) * | 2013-09-18 | 2013-12-25 | 无锡华源凯马发动机有限公司 | Electrically-driven wind and water dual-cooling type aluminium alloy single-cylinder diesel engine |
| CN106979070A (en) * | 2017-03-09 | 2017-07-25 | 斯太尔动力（常州）发动机有限公司 | Water-cooled vertical single cylinder diesel engine with disjunctor airframe structure |
| CN109306924A (en) * | 2018-11-23 | 2019-02-05 | 湖北科技学院 | A kind of IC engine air-inlet-exhaust system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105927380B (en) | Twin crankshaft engine | |
| US20130269634A1 (en) | Combustion engine with a pair of one-way clutches used as a rotary shaft | |
| AU2014216547A1 (en) | Valve assembly and method for high temperature engines | |
| JPS62203923A (en) | Swing piston type internal combustion engine | |
| CN104481689B (en) | Double-crank mechanism engine | |
| CN201155440Y (en) | Diameter-changing double acting piston type compressor | |
| CN113847158A (en) | Cylinder of four-stroke internal combustion engine | |
| CN109340078B (en) | Double-opposite-piston compressor structure | |
| CN111140332A (en) | Stroke cooling device of engine | |
| CN1916385A (en) | Splitting cnginc | |
| CN206681931U (en) | A kind of totally enclosed type cooling damping compressor | |
| CN215979773U (en) | Two-way piston water-cooling high-pressure air pump | |
| RU2644424C1 (en) | Hybrid machine with trunk piston | |
| CN201330690Y (en) | Multicylinder translational compression device | |
| TWM614077U (en) | Internal combustion engine booster system | |
| CN207122391U (en) | Horizontally-opposed digital controlled linear piston compressor | |
| US11578649B2 (en) | Internal combustion engine with charging system | |
| CN213298103U (en) | High-efficiency engine | |
| CN216894561U (en) | Air energy turbocharged engine and equipment comprising same | |
| CN104213977A (en) | Variable-stroke air cylinder piston of air cylinder type internal combustion engine | |
| CN104454153B (en) | Ring Cylinder engine | |
| CN211692645U (en) | Two-stroke crankless pneumatic engine based on waste gas utilization | |
| CN110259577B (en) | Eccentric wheel type piston engine | |
| CN101476552B (en) | Multi-cylinder translation compression device | |
| CN213540905U (en) | Knife striking cylinder structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |