CN111810291A - Swash plate type opposed piston two-stroke external combustion engine - Google Patents

Swash plate type opposed piston two-stroke external combustion engine Download PDF

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Publication number
CN111810291A
CN111810291A CN202010523983.2A CN202010523983A CN111810291A CN 111810291 A CN111810291 A CN 111810291A CN 202010523983 A CN202010523983 A CN 202010523983A CN 111810291 A CN111810291 A CN 111810291A
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China
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piston
air
work
cylinder
valve
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CN202010523983.2A
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CN111810291B (en
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刘望建
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    • 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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L7/00—Rotary or oscillatory slide valve-gear or valve arrangements
    • F01L7/02—Rotary or oscillatory slide valve-gear or valve arrangements with cylindrical, sleeve, or part-annularly shaped valves
    • F01L7/04—Rotary or oscillatory slide valve-gear or valve arrangements with cylindrical, sleeve, or part-annularly shaped valves surrounding working cylinder or piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L7/00—Rotary or oscillatory slide valve-gear or valve arrangements
    • F01L7/16—Sealing or packing arrangements specially therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L7/00—Rotary or oscillatory slide valve-gear or valve arrangements
    • F01L7/18—Component parts, details, or accessories not provided for in preceding subgroups of this group
    • 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
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/08—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition
    • 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
    • F02B75/26—Engines with cylinder axes coaxial with, or parallel or inclined to, main-shaft axis; Engines with cylinder axes arranged substantially tangentially to a circle centred on main-shaft axis
    • 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 
    • F02F3/0015—Multi-part pistons
    • F02F3/003—Multi-part pistons the parts being connected by casting, brazing, welding or clamping
    • 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
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Abstract

The utility model provides a swash plate type opposition piston two-stroke external combustion engine, including the cylinder block, the main shaft hole has been seted up at the middle part of cylinder block, six cylinders that axially link up have evenly been arranged to the periphery in main shaft hole, the opposition is provided with two front and back pistons in the cylinder, both ends all are provided with the rotatory pneumatic valve of calming anger around the cylinder, the middle part of cylinder is provided with the rotatory pneumatic valve of acting, in twelve pistons, nine pistons admit air and do one-level compression to gas storage branch pipe from the environment through the rotatory pneumatic valve of calming anger, three pistons admit air and do second grade compression to the combustion chamber from gas storage branch pipe through the rotatory pneumatic valve of calming anger, in six cylinders, three cylinder carries out the one-level acting, three cylinder carries out the second grade acting, the cylinder of piston place that the one-level compression is done. This design has improved heat utilization rate.

Description

Swash plate type opposed piston two-stroke external combustion engine
Technical Field
The invention relates to a piston engine, in particular to a swash plate type opposed piston two-stroke external combustion engine which is mainly suitable for improving the heat energy utilization rate.
Background
At present, the internal combustion engine is widely used in various fields, the thermal efficiency of the internal combustion engine seems to reach the top, and the thermal efficiency is not greatly improved for years, and according to analysis, the heat energy loss is mainly the following points:
1. the exhaust heat loss is 35% -50%, when the exhaust valve is opened, the air pressure of about 1MPa is still in the air cylinder, the constant entropy line of expansion work is relatively gentle at the moment, the work is just done outwards, but the air cylinder does not open and causes larger resistance to the exhaust stroke, and the loss is not compensated, and the air resistance is reduced by using a multi-valve technology at present, so that the effect is effective, but the effect is not satisfactory;
2. the cooling system, the eddy of the high-temperature gas in the combustion chamber helps the combustion to be thorough, so that the emission of Hydrocarbon (HC) and carbon monoxide (CO) is reduced, but the high-temperature gas frequently contacts the cooler combustion chamber wall and the bottom surface of the cylinder cover, so that the heat loss is large; the thermal resistance is improved by thickening the wall thickness of the part, so that the thermal fatigue of the part is caused, and the service life of the part is influenced;
3. the friction resistance is that the piston applies the maximum work to the outside when in the middle of the stroke, but the reaction force for pushing the crankshaft to apply work is on the piston and the cylinder sleeve, and the friction resistance loses the great shaft work due to the extremely large lateral stress of the piston.
Disclosure of Invention
The invention aims to overcome the defects and problems of low heat energy utilization rate in the prior art and provide a swash plate type opposed piston two-stroke external combustion engine with high heat energy utilization rate.
In order to achieve the above purpose, the technical solution of the invention is as follows: a swash plate type opposed piston two-stroke external combustion engine comprises a cylinder body, wherein a main shaft hole is formed in the middle of the cylinder body, a main shaft is arranged in the main shaft hole, swash plate boxes are respectively arranged at two ends of the cylinder body, a swash plate is arranged in each swash plate box and sleeved on the main shaft, six axially-through cylinders are uniformly arranged on the periphery of each main shaft hole, a front piston and a rear piston are oppositely arranged in each cylinder, piston rods of the pistons are connected with a sliding block support in each swash plate box, the sliding block support is in sliding connection with a guide rail on each swash plate box, a ball socket of each sliding block support is in sliding connection with a spherical surface of a hemispherical sliding block in each swash plate box, the plane of each hemispherical sliding block is in sliding connection with the corresponding swash plate, a rear end cover is arranged at the rear end of the main shaft, a flywheel is arranged, the flywheel shell is mounted on the rear end cover, the front end of the main shaft is provided with a front end cover, the front end surface of the front end cover is provided with a gear box, a belt pulley is arranged on the main shaft at the front end of the gear box, a rotary air valve gear is arranged in the gear box corresponding to one air cylinder respectively, a plurality of intermediate gears are arranged in the gear box, the rotary air valve gears are meshed with the corresponding intermediate gears respectively, and the intermediate gears are meshed with the main shaft gear at the front end of the main shaft respectively;
the front end and the rear end of the cylinder are provided with air compressing rotary air valves, the middle part of the cylinder is provided with a work applying rotary air valve, the air compressing rotary air valve at the front end of the cylinder is in transmission connection with a rotary air valve gear through a transmission shaft, the air compressing rotary air valve at the front end of the cylinder is connected with the work applying rotary air valve through a coupling, and the work applying rotary air valve is connected with the air compressing rotary air valve at the rear end of the cylinder through the coupling;
nine of the twelve pistons intake air from the environment through the air compression rotary air valve and perform primary compression to the air storage branch pipe, and three pistons intake air from the air storage branch pipe through the air compression rotary air valve and perform secondary compression to the combustion chamber;
the first-stage compression means that when the piston moves upwards from the lower dead point, the lower cavity of the piston sucks air from the environment, and when the piston moves downwards, the air is pressed into the air storage branch pipe;
the secondary compression means that the lower cavity of the piston is filled with air from the air storage branch pipe when the piston moves upwards, and the air is pressed into the combustion chamber when the piston moves downwards;
three cylinders perform primary work and three cylinders perform secondary work in the six cylinders;
the first-stage work doing means that after a piston of the first-stage work doing cylinder crosses a top dead center, an air inlet channel of the work doing rotary air valve is opened, high-pressure gas is input into an upper piston cavity by a combustion chamber to push the piston to do work downwards, when a certain point after the top dead center passes, the air inlet channel of the work doing rotary air valve is closed, the high-pressure gas expands in a fixed entropy manner to push the piston to continue doing work downwards until the bottom dead center, and after the piston crosses the bottom dead center, an air outlet channel of the work doing rotary air valve is opened to discharge waste;
the first-stage acting cylinder is a cylinder where a piston for performing second-stage compression is located;
the secondary work doing means that the piston of the primary work doing cylinder is 60 degrees away from the top dead center, the piston of the secondary work doing cylinder reaches the top dead center, at the moment, the air inlet channel of the work doing rotary air valve is opened, the combustion chamber inputs the residual high-pressure gas into the upper cavity of the piston to push the piston to do work downwards, the air inlet channel of the work doing rotary air valve is closed at a certain point before the bottom dead center, the high-pressure gas does constant-entropy expansion to push the piston to continue to do work downwards until the bottom dead center, and after the piston passes the bottom dead center, the exhaust channel of the work doing rotary air valve is opened to;
the second-stage working cylinder is a cylinder with a front piston and a rear piston which are both used for first-stage compression.
The automatic voice coil motor is characterized in that a first conical gear is connected to the rotary air valve gear, the rotary air valve gear is sleeved on the transmission shaft, the transmission shaft is installed on the front end cover through a bearing seat, a second conical gear is connected to the transmission shaft, a planetary gear shaft is vertically inserted into a position, between the first conical gear and the second conical gear, of the transmission shaft, positions, located on two sides of the transmission shaft, of the planetary gear shaft are connected with a third conical gear, the third conical gear is meshed with the first conical gear and the second conical gear, one end of the planetary gear shaft is connected with one end of a return spring, the other end of the return spring is connected with a fixed rod in the gear box, the other end of the planetary gear shaft is connected with a cam, and the cam is contacted with.
The combustion chamber comprises a shell, a thermal barrier coating and an inner container are cast in the shell in an embedded mode, an oil nozzle is installed at the top of the shell, a spark plug is installed at the bottom of the shell, an air inlet pipe is installed on one side of the shell, a spiral blade pipe is installed in the air inlet pipe in a sleeved mode, and an air outlet pipe is installed on the other side of the shell.
The pneumatic rotary air valve and the working rotary air valve both comprise a valve body and a valve core sleeved in the valve body, the valve core is provided with an air inlet channel and an exhaust channel, the middle of the valve core is provided with a sealing ring, the two ends of the valve core are provided with bushings, the two shaft ends of the valve core are sealed by a black mud-shaped packing and a sealing end cover, the two sides of the valve body are provided with a cooling water jacket, one side of the valve body is provided with an air inlet and an air outlet, and the other side of the valve body.
The piston is formed by friction welding an upper piston body and a lower piston body, a cavity is formed in the middle of the piston, an airtight ring is installed in the middle of the outer wall of the piston, directional rings are installed at two ends of the outer wall of the piston, and thermal barrier coatings are arranged at the upper end and the lower end of the piston.
And a compressed air pipe is arranged on the gas storage branch pipe, and an electromagnetic valve is arranged between the gas storage branch pipe and the compressed air pipe.
Compared with the prior art, the invention has the beneficial effects that:
1. the swash plate type opposed piston two-stroke external combustion engine of the invention is totally provided with twelve pistons, the lower cavities of nine pistons are used for air intake from the environment and primary compression to the air storage branch pipe, the lower cavities of three pistons are used for air intake from the air storage branch pipe and compression to respective combustion chambers, the upper cavities of six pistons are used for primary expansion work, the upper cavities of six pistons are used for secondary expansion work, the expansion work volume is 1.4 times larger than the air intake volume, thus the excess pressure of the modern internal combustion engine during exhaust can be more thoroughly utilized, and the heat energy utilization rate is greatly improved. Therefore, the invention improves the heat energy utilization rate.
2. The invention relates to a rotary air valve gear in a swash plate type opposed piston two-stroke external combustion engine, wherein a second conical gear is driven to move by a first conical gear and a third conical gear, the second conical gear drives a transmission shaft to move, the transmission shaft drives an air valve to move, one end of a planet gear shaft is connected with one end of a return spring, the other end of the return spring is connected with a fixed rod in a gear box, the other end of the planet gear shaft is connected with a cam, the cam is contacted with a roller on a voice coil motor, the voice coil motor drives the cam to rotate, the cam drives the planet gear shaft to shift, the planet gear shaft drives the third conical gear to shift, so that the motion angle of the second conical gear is changed, the air inlet channel of an air compressing rotary air valve and the exhaust channel of an acting rotary air valve are more full in area, the viscous friction of air is reduced, and the closing time of secondary acting, the reserved air pressure of the combustion chamber is controlled, and therefore the compression ratio is controlled. Therefore, the present invention can not only reduce the viscous friction of air but also control the compression ratio.
3. According to the swash plate type opposed piston two-stroke external combustion engine, fuel oil is sprayed into a combustion chamber when secondary compression is completed, a main shaft rotation time of 60 degrees is reserved from a primary working air inlet channel, and gasification and combustion of the fuel oil are carried out in a constant volume environment, so that combustion is more complete. Therefore, the invention has more perfect combustion.
4. According to the swash plate type opposed piston two-stroke external combustion engine, the thermal barrier coating and the inner container are embedded and cast in the shell, so that the rigidity of the combustion chamber is improved, and temperature leakage can be prevented; the spiral blade pipe is sleeved in the air inlet pipe, compressed air forms high-speed tumble through the spiral blade pipe and rushes into the combustion chamber, a rotary vortex is formed in the combustion chamber, high-pressure gas in the combustion chamber is squeezed into the first working air inlet pipe and the second working air inlet pipe, and the slope of a constant entropy line expanding during working is gentle due to the large total volume of the combustion chamber. Therefore, the invention not only improves the rigidity of the combustion chamber and can prevent temperature leakage, but also leads the slope of the constant entropy line of expansion to be more gentle when doing work.
5. According to the rotary air valve in the swash plate type opposed piston two-stroke external combustion engine, the sealing ring is arranged in the middle of the valve core, and two shaft ends of the valve core are sealed through the black mud-shaped packing and the sealing end cover, so that the sealing effect is better; the two ends of the valve core are provided with the bushings, so that the friction resistance is reduced, and the dependence on lubricating oil is reduced; and cooling water jackets are arranged on two sides of the valve body to ensure that the air valve works at normal temperature. Therefore, the invention has good sealing effect, small friction resistance and good cooling effect.
6. The piston in the swash plate type opposed piston two-stroke external combustion engine is formed by friction welding of the upper piston body and the lower piston body, and the middle part of the piston is provided with the cavity, so that the weight is effectively reduced, and the swash plate type opposed piston two-stroke external combustion engine is more suitable for high-speed operation; thermal barrier coatings are arranged at the upper end and the lower end of the piston, so that the temperature of the piston can be reduced. Therefore, the invention not only reduces the weight of the piston and is more suitable for high-speed operation, but also can reduce the temperature of the piston.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the structure of the gas pipe in the present invention.
Fig. 3 is a schematic view of the arrangement of cylinders in the present invention.
FIG. 4 is a schematic view of the structure of the gear case of the present invention.
Fig. 5 is a schematic view showing an assembly structure of a rotary valve gear and a transmission shaft according to the present invention.
FIG. 6 is a schematic view of an assembly structure of the planetary gear shaft, the return spring and the voice coil motor according to the present invention.
Fig. 7 is a schematic view of the structure of the combustion chamber in the present invention.
Fig. 8 is a schematic structural view of the air compressing rotary air valve and the work applying rotary air valve of the invention.
Fig. 9 is a schematic structural view of the valve body of fig. 8.
Fig. 10 is a schematic view of the piston structure of the present invention.
Fig. 11 is a schematic diagram (one) of the switch of the pneumatic rotary air valve of the invention.
Fig. 12 is a schematic diagram (two) of the switch of the pneumatic rotary air valve of the invention.
Fig. 13 is a schematic diagram (three) of the switch of the pneumatic rotary air valve of the invention.
FIG. 14 is a schematic diagram (one) of the switch of the working rotary air valve in the invention.
Fig. 15 is a schematic diagram (two) of the switch of the working rotary air valve in the invention.
Fig. 16 is a schematic diagram (three) of the switch of the working rotary air valve in the invention.
Fig. 17 is the calculated data (one) of the pressure change in the cylinder and the piston position in the present invention.
Fig. 18 is the calculated data of the pressure change in the cylinder and the piston position in the present invention (two).
FIG. 19 is a graph of pressure versus piston position in a cylinder according to the present invention.
Fig. 20 is an average pressure value of the highest pressure and the lowest pressure in the cylinder in the present invention.
In the figure: the air cylinder comprises a cylinder body 1, a main shaft 2, a swash plate box 3, a swash plate 4, an air cylinder 5, a piston 6, a cavity 61, an airtight ring 62, a directional ring 63, a threaded hole 64, a piston rod 7, a slider bracket 8, a ball socket 9, a hemispherical slider 10, a rear end cover 11, a flywheel 12, a flywheel housing 13, a front end cover 14, a gear box 15, a belt pulley 16, a rotary air valve gear 17, an intermediate gear 18, a main shaft gear 19, a pneumatic rotary air valve 20, a working rotary air valve 21, a valve body 211, a valve core 212, an air inlet channel 213, an exhaust channel 214, a sealing ring 215, a bushing 216, a black mud packing 217, a sealing end cover 218, a cooling water jacket 219, an air inlet 220, an exhaust outlet 221, an air cylinder channel port 222, a transmission shaft 22, a coupler 23, an air storage branch pipe 24, a combustion chamber 25, a housing 251, an inner container 252, an oil nozzles 253, a spark, The device comprises a bearing seat 27, a second bevel gear 28, a planet gear shaft 29, a third bevel gear 30, a return spring 31, a fixed rod 32, a cam 33, a voice coil motor 34, a roller 35, an electromagnetic valve 36, a cylinder sealing end cover 37, a swash plate seat 38, a counterweight pressing block 39, a nut 40, a compressed air pipe 41 and an accessory gear 42.
Detailed Description
The present invention will be described in further detail with reference to the following description and embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 to 20, a swash plate type opposed piston two-stroke external combustion engine includes a cylinder block 1, a main shaft hole is formed in the middle of the cylinder block 1, a main shaft 2 is disposed in the main shaft hole, swash plate cases 3 are respectively disposed at two ends of the cylinder block 1, a swash plate 4 is disposed in the swash plate case 3, the swash plate 4 is sleeved on the main shaft 2, six axially-through cylinders 5 are uniformly disposed on the periphery of the main shaft hole, front and rear pistons 6 are disposed in the cylinders 5 in an opposed manner, piston rods 7 of the pistons 6 are both connected with a slide block support 8 in the swash plate case 3, the slide block support 8 is slidably connected with a guide rail on the swash plate case 3, a ball socket 9 of the slide block support 8 is slidably connected with a spherical surface of a hemispherical slide block 10 in the swash plate case 3, a plane of the hemispherical slide block 10 is slidably connected with the swash plate, the rear end of the rear end cover 11 is provided with a flywheel 12, the flywheel 12 is sleeved at the rear end of the main shaft 2, a flywheel housing 13 is arranged outside the flywheel 12, the flywheel housing 13 is mounted on the rear end cover 11, the front end of the main shaft 2 is provided with a front end cover 14, the front end surface of the front end cover 14 is provided with a gear box 15, the main shaft 2 at the front end of the gear box 15 is provided with a belt pulley 16, one rotary air valve gear 17 is arranged in the gear box 15 corresponding to one air cylinder 5 respectively, a plurality of intermediate gears 18 are arranged in the gear box 15, the rotary air valve gears 17 are meshed with the corresponding intermediate gears 18 respectively, and the plurality of intermediate gears 18 are meshed with a main shaft gear 19 at the front end of the main shaft 2;
the front end and the rear end of the air cylinder 5 are respectively provided with an air compressing rotary air valve 20, the middle part of the air cylinder 5 is provided with a work applying rotary air valve 21, the air compressing rotary air valve 20 at the front end of the air cylinder 5 is in transmission connection with a rotary air valve gear 17 through a transmission shaft 22, the air compressing rotary air valve 20 at the front end of the air cylinder 5 is connected with the work applying rotary air valve 21 through a coupling 23, and the work applying rotary air valve 21 is connected with the air compressing rotary air valve 20 at the rear end of the air cylinder 5 through the coupling 23;
nine of the twelve pistons 6 are used for air intake from the environment through the air compressing rotary air valve 20 and perform primary compression to the air storage branch pipe 24, and three pistons 6 are used for air intake from the air storage branch pipe 24 through the air compressing rotary air valve 20 and perform secondary compression to the combustion chamber 25;
the first-stage compression means that when the piston 6 moves upwards from the bottom dead center, the lower cavity of the piston 6 sucks air from the environment, and when the piston 6 moves downwards, the air is pressed into the air storage branch pipe 24;
the secondary compression means that the lower cavity of the piston 6 is filled with air from the air storage branch pipe 24 when the piston 6 moves upwards, and the air is pressed into the combustion chamber 25 when the piston 6 moves downwards;
of the six cylinders 5, three cylinders 5 perform primary work, and three cylinders 5 perform secondary work;
the first-stage work is that after the piston 6 of the first-stage work cylinder passes through a top dead center, the air inlet channel 213 of the work rotary air valve 21 is opened, the combustion chamber 25 inputs high-pressure air into the upper cavity of the piston 6 to push the piston 6 to do work downwards, when a certain point passes through the top dead center, the air inlet channel 213 of the work rotary air valve 21 is closed, the high-pressure air expands at a fixed entropy to push the piston 6 to continue to do work downwards until the bottom dead center, and after the piston 6 passes through the bottom dead center, the air outlet channel 214 of the work rotary air valve 21 is opened to discharge waste gas;
the first-stage acting cylinder is a cylinder 5 where a piston 6 for second-stage compression is located;
the secondary work is that the piston 6 of the primary work cylinder is 60 degrees away from the top dead center, the piston 6 of the secondary work cylinder reaches the top dead center, at this time, the air inlet channel 213 of the work rotary air valve 21 is opened, the combustion chamber 25 inputs the residual high-pressure gas into the upper cavity of the piston 6 to push the piston 6 to do work downwards, at a certain point before the bottom dead center, the air inlet channel 213 of the work rotary air valve 21 is closed, the high-pressure gas does constant entropy expansion to push the piston 6 to continue to do work downwards until the bottom dead center, and after the piston 6 passes the bottom dead center, the air outlet channel 214 of the work rotary air valve 21 is opened to discharge waste gas;
the second-stage work cylinder is a cylinder 5 with a front piston 6 and a rear piston 6 which both perform first-stage compression.
The rotary air valve gear 17 is connected with a first conical gear 26, the rotary air valve gear 17 is sleeved on the transmission shaft 22, the transmission shaft 22 is mounted on the front end cover 14 through a bearing seat 27, a second conical gear 28 is connected on the transmission shaft 22, a planetary gear shaft 29 is vertically inserted in a position, between the first conical gear 26 and the second conical gear 28, on the transmission shaft 22, the planetary gear shaft 29 is connected with a third conical gear 30 at the two sides of the transmission shaft 22, the third conical gear 30 is meshed with the first conical gear 26 and the second conical gear 28, one end of the planet gear shaft 29 is connected with one end of a return spring 31, the other end of the return spring 31 is connected with a fixed rod 32 in the gear box 15, the other end of the planet gear shaft 29 is connected with a cam 33, and the cam 33 is contacted with a roller 35 on a voice coil motor 34.
The combustion chamber 25 comprises a shell 251, a thermal barrier coating and an inner container 252 are embedded and cast in the shell 251, an oil nozzle 253 is installed at the top of the shell 251, a spark plug 254 is installed at the bottom of the shell 251, an air inlet pipe 255 is installed at one side of the shell 251, a spiral blade pipe 256 is installed in the air inlet pipe 255, and an air outlet pipe 257 is installed at the other side of the shell 251.
The air compressing rotary air valve 20 and the work applying rotary air valve 21 both comprise a valve body 211 and a valve core 212 sleeved in the valve body 211, the valve core 212 is provided with an air inlet channel 213 and an air outlet channel 214, the middle part of the valve core 212 is provided with a sealing ring 215, two ends of the valve core 212 are provided with bushings 216, two shaft ends of the valve core 212 are sealed by a black mud-shaped packing 217 and a sealing end cover 218, two sides of the valve body 211 are provided with cooling water jackets 219, one side of the valve body 211 is provided with an air inlet 220 and an air outlet 221, and the other side of the valve body 211 is.
The piston 6 is formed by friction welding an upper piston body and a lower piston body, a cavity 61 is formed in the middle of the piston 6, an airtight ring 62 is installed in the middle of the outer wall of the piston 6, directional rings 63 are installed at two ends of the outer wall of the piston 6, and thermal barrier coatings are arranged at the upper end and the lower end of the piston 6.
The air storage branch pipe 24 is provided with a compressed air pipe 41, and an electromagnetic valve 36 is arranged between the air storage branch pipe 24 and the compressed air pipe 41.
The principle of the invention is illustrated as follows:
the front end cover 14 and the rear end cover 11 are respectively arranged on the swash plate box 3; the two ends of the cylinder 5 are respectively provided with a cylinder sealing end cover 37; the swash plate 4 is fixed on the main shaft 2 by a counter weight pressing block 39, a swash plate base 38 and a nut 40. The rotating motion of the main shaft is converted into the reciprocating motion of the piston by the swash plate, the hemispherical slide block and the slide block bracket, and the counterforce pushing the swash plate to do work is arranged on the dovetail groove of the swash plate box, so that the distance is short and the rigidity is good. The piston stroke is not limited by the cylinder diameter, and a long stroke can be easily designed without using a cross shaft; because the piston and the piston rod do linear reciprocating motion, the upper end and the lower end of the piston are both provided with working cavities, six cylinders are arranged in a circle, the volume of the whole machine is small, and the volume of the whole machine is less than 1/3 compared with that of an internal combustion engine with the same displacement. Because the working volume is 1.4 times larger than the suction volume, the expansion working is more thorough. The noise is reduced, and the pressure during exhaust is below 0.3 MPa.
The design uses the lower cavities of nine pistons to suck air from the environment, uses the upper cavities of twelve pistons to do work, and uses the working volume of the upper cavities of the pistons to be 1.4 times larger than the air suction volume of the lower cavities of the pistons, thereby effectively solving the problem that the pressure of a cylinder is still very high when the internal combustion engine exhausts, and greatly improving the heat energy utilization rate.
1. An intake compression stroke; and one-stage compression, wherein when the pistons move from two ends (piston bottom dead center) to the middle part, the lower cavities of the nine pistons are used for sucking air from the environment, and when the pistons move from the middle part (piston top dead center) to two ends, the air is pressed into the air storage branch pipe. And in the secondary compression, when the piston moves from two ends (piston bottom dead center) to the middle part, the air is introduced from the air storage branch pipe by using the lower cavities of the three pistons, and when the piston moves from the middle part (piston top dead center) to two ends, the air is pressed into respective combustion chambers. The air after the second-stage compression forms tumble flow through a spiral pipe (an air inlet pipe with a spiral blade pipe), then tangentially rushes into the combustion chamber to form vortex, the reserved air in the combustion chamber is extruded into the air inlet pipe which does work for the first time and the air inlet pipe which does work for the second time, the closing time of the air inlet of the second time is adjusted by using a voice coil motor, the height of the reserved air pressure in the combustion chamber is controlled, and the compression ratio is adjusted to the optimal position. The total volume in the combustion chamber is larger, so that the slope of the constant entropy line expanded when doing work is smoother. Because the rotary air valve is used, the clearance of the air cylinder is small and is about 1 percent. The compressed air pipe is arranged on the air storage branch pipe and is controlled by the electromagnetic valve, and the air is filled into the air storage branch pipe when the engine is started and accelerated rapidly, so that the air input and the pressure of secondary compressed air are increased, and the combustion is more thorough when the engine is started smoothly and accelerated rapidly.
2. Oil injection and combustion; the combustion chamber is embedded and cast in the combustion chamber shell by a red copper inner container and a thermal barrier coating, and can prevent temperature leakage and part thermal fatigue. The air after the second-stage compression forms high-speed tumble flow through the spiral pipe and then tangentially rushes into the combustion chamber, a rotary vortex is formed around the inner cavity of the combustion chamber under the action of a wall attachment effect, the gas column gradually expands and quickly rotates to rush to the bottom of the combustion chamber, and residual waste gas in the combustion chamber is squeezed into the first-stage and second-stage acting air inlet pipes. The fresh air, when it enters the combustion chamber, picks up heat on the hot combustion chamber walls. After the combustion chamber finishes air intake, fuel is sprayed into the combustion chamber (a cross-shaped spraying groove fuel injector), small oil particles can be atomized and mixed on the way due to the fact that the distance between the fuel injector and the bottom plate of the combustion chamber is long, medium oil particles can be stripped and gasified, large oil particles can collide with the wall of the combustion chamber and are evaporated and gasified under the action of temperature, and the combustion lag period is prolonged to some extent. Because the pressure and the temperature in the combustion chamber are not enough to ignite and burn the oil mist, the spark plug is arranged at the bottom of the combustion chamber, and because the air-fuel ratio at the bottom of the combustion chamber is small, an ignition source is formed under the action of the spark plug, and as the temperature and the pressure in the combustion chamber rise, oil gas far away from the ignition source can be combusted at multiple points to form lean low-temperature combustion. Constant volume combustion is carried out in the time with more than 70 degrees of main shaft rotation angle, and the slow combustion period, the fast combustion period and the after combustion period of the combustion are carried out in a constant volume environment, so that the combustion is more complete. The long premixing time is used to fully gasify the fuel, if the fuel knocks, the fuel is not important, and the buffering and pressure storage functions of the air inlet pipeline of the first-stage work doing and the air inlet pipeline of the combustion chamber are also provided, so that the light sound and the smoke are avoided, and the combustion is more thorough. Because the high-temperature gas stays in the combustion chamber for a long time, nitrogen oxides NOx are easily generated, and the stirring effect of violent airflow movement in the combustion chamber is used for preventing a local ultrahigh temperature zone from being formed in the combustion chamber, limiting the highest combustion temperature and inhibiting the generation of the nitrogen oxides (NOx).
3. Expansion work and exhaust stroke; after the piston doing work at one level crosses the top dead center, the air inlet channel of the air valve doing work at one level is opened, high-temperature high-pressure gas enters the upper cavity of the piston to push the piston to do work downwards, when the piston crosses a certain point after the top dead center, the air inlet channel of the air valve doing work at one level is closed, and the high-pressure gas in the air inlet channel of the air valve doing work at one level and the cylinder expands to push the piston to do work downwards until the bottom dead center. Therefore, the volume of the high-pressure gas is larger, the slope of the constant entropy line of expansion work is smoother, higher pressure can be kept when the piston descends to the middle of the stroke, and the effective work output outwards by the piston in the middle of the stroke is the largest due to the angle relation. When the piston of the first-stage working cylinder leaves 60 degrees behind the top dead center and the piston of the second-stage working cylinder reaches the top dead center, the air inlet channel of the second-stage working air valve is opened, the residual high-pressure gas in the combustion chamber enters the second-stage working cylinder to push the piston to do work downwards until a certain point before the bottom dead center, the air inlet channel of the second-stage working air valve is closed under the control of the voice coil motor, and the gas in the upper cavity of the piston expands to the bottom dead center in a constant entropy mode. The air valve air inlet channel of the first-stage working cylinder is closed at a point after the top dead center, so that the pressures of the first-stage working cylinder and the second-stage working cylinder are basically consistent when exhausting. The air inlet channel of the secondary work-doing air valve is closed before the bottom dead center so as to keep a certain pressure in the combustion chamber and prepare for the compression ratio of the next cycle. The voice coil motor is used for regulating and controlling the closing time of the secondary working air valve, the optimal compression pressure in the combustion chamber can be accurately controlled, and the temperature can be improved only by using a high compression ratio due to the small vortex intensity in the combustion chamber at a low rotating speed and a small load, so that the combustion deterioration is prevented; and at high rotation speed, the temperature is prevented from being too high by a smaller compression ratio, and nitrogen oxides are prevented from being generated. The cam of the differential mechanism (the structure of figures 5 and 6) has the function of increasing the areas of the air inlet channel of the compression air valve and the air outlet channel of the work-doing air valve, and the voice coil motor is used for controlling the closing time of the two-stage work-doing air inlet valve and adjusting the compression ratio besides increasing the channel area of the two-stage work-doing differential mechanism.
First, second grade doing work piston all is opened beyond the exhaust passage of doing work pneumatic valve behind the lower dead center, discharges waste gas, and the reason is: the rotary air valve is used, the area of the air flow channel is not limited by the diameter of the air cylinder, and the air flow channel can be made to be very large; the air pressure in the cylinder when the piston is at the bottom dead center is not very high, and even if the air exhaust is not thorough, the next cycle is not influenced.
Example (b):
referring to fig. 1 to 4, a swash plate type opposed piston two-stroke external combustion engine includes a cylinder block 1, a main shaft hole is formed in the middle of the cylinder block 1, a main shaft 2 is disposed in the main shaft hole, swash plate cases 3 are respectively disposed at two ends of the cylinder block 1, a swash plate 4 is disposed in the swash plate case 3, the swash plate 4 is sleeved on the main shaft 2, six axially-through cylinders 5 are uniformly disposed on the periphery of the main shaft hole, front and rear pistons 6 are disposed in the cylinders 5 in an opposed manner, piston rods 7 of the pistons 6 are both connected with a slide block support 8 in the swash plate case 3, the slide block support 8 is slidably connected with a guide rail on the swash plate case 3, a ball socket 9 of the slide block support 8 is slidably connected with a spherical surface of a hemispherical slide block 10 in the swash plate case 3, a plane of the hemispherical slide block 10 is slidably connected with the swash plate, the rear end of the rear end cover 11 is provided with a flywheel 12, the flywheel 12 is sleeved at the rear end of the main shaft 2, a flywheel housing 13 is arranged outside the flywheel 12, the flywheel housing 13 is mounted on the rear end cover 11, the front end of the main shaft 2 is provided with a front end cover 14, the front end surface of the front end cover 14 is provided with a gear box 15, the main shaft 2 at the front end of the gear box 15 is provided with a belt pulley 16, one rotary air valve gear 17 is respectively arranged in the gear box 15 corresponding to one air cylinder 5, a plurality of intermediate gears 18 are arranged in the gear box 15, the rotary air valve gears 17 are respectively meshed with the corresponding intermediate gears 18, the plurality of intermediate gears 18 are respectively meshed with a main shaft gear 19 at the front end of the main shaft 2, the front end and the rear end of each air cylinder 5 are respectively provided with an air compressing rotary air valve 20, the middle of each air cylinder 5 is provided with an acting rotary air valve 21, the air, the air compressing rotary air valve 20 at the front end of the air cylinder 5 is connected with the work applying rotary air valve 21 through a coupling 23, and the work applying rotary air valve 21 is connected with the air compressing rotary air valve 20 at the rear end of the air cylinder 5 through the coupling 23;
nine of the twelve pistons 6 are used for air intake from the environment through the air compressing rotary air valve 20 and perform primary compression to the air storage branch pipe 24, and three pistons 6 are used for air intake from the air storage branch pipe 24 through the air compressing rotary air valve 20 and perform secondary compression to the combustion chamber 25;
the first-stage compression means that when the piston 6 moves upwards from the bottom dead center, the lower cavity of the piston 6 sucks air from the environment, and when the piston 6 moves downwards, the air is pressed into the air storage branch pipe 24;
the secondary compression means that the lower cavity of the piston 6 is filled with air from the air storage branch pipe 24 when the piston 6 moves upwards, and the air is pressed into the combustion chamber 25 when the piston 6 moves downwards;
of the six cylinders 5, three cylinders 5 perform primary work, and three cylinders 5 perform secondary work;
the first-stage work is that after the piston 6 of the first-stage work cylinder passes through a top dead center, the air inlet channel 213 of the work rotary air valve 21 is opened, the combustion chamber 25 inputs high-pressure air into the upper cavity of the piston 6 to push the piston 6 to do work downwards, when a certain point passes through the top dead center, the air inlet channel 213 of the work rotary air valve 21 is closed, the high-pressure air expands at a fixed entropy to push the piston 6 to continue to do work downwards until the bottom dead center, and after the piston 6 passes through the bottom dead center, the air outlet channel 214 of the work rotary air valve 21 is opened to discharge waste gas;
the first-stage acting cylinder is a cylinder 5 where a piston 6 for second-stage compression is located;
the secondary work is that the piston 6 of the primary work cylinder is 60 degrees away from the top dead center, the piston 6 of the secondary work cylinder reaches the top dead center, at this time, the air inlet channel 213 of the work rotary air valve 21 is opened, the combustion chamber 25 inputs the residual high-pressure gas into the upper cavity of the piston 6 to push the piston 6 to do work downwards, at a certain point before the bottom dead center, the air inlet channel 213 of the work rotary air valve 21 is closed, the high-pressure gas does constant entropy expansion to push the piston 6 to continue to do work downwards until the bottom dead center, and after the piston 6 passes the bottom dead center, the air outlet channel 214 of the work rotary air valve 21 is opened to discharge waste gas;
the second-stage work cylinder is a cylinder 5 with a front piston 6 and a rear piston 6 which both perform first-stage compression.
Referring to fig. 1, 4, 5 and 6, a first conical gear 26 is connected to the rotary air valve gear 17, the rotary air valve gear 17 is sleeved on the transmission shaft 22, the transmission shaft 22 is mounted on the front end cover 14 through a bearing seat 27, a second conical gear 28 is connected on the transmission shaft 22, a planetary gear shaft 29 is vertically inserted in a position, between the first conical gear 26 and the second conical gear 28, on the transmission shaft 22, the planetary gear shaft 29 is connected with a third conical gear 30 at the two sides of the transmission shaft 22, the third conical gear 30 is meshed with the first conical gear 26 and the second conical gear 28, one end of the planet gear shaft 29 is connected with one end of a return spring 31, the other end of the return spring 31 is connected with a fixed rod 32 in the gear box 15, the other end of the planet gear shaft 29 is connected with a cam 33, and the cam 33 is contacted with a roller 35 on a voice coil motor 34.
Referring to fig. 2, 3 and 7, the combustion chamber 25 includes a housing 251, a thermal barrier coating and an inner container 252 are cast in the housing 251, an oil nozzle 253 is installed at the top of the housing 251, a spark plug 254 is installed at the bottom of the housing 251, an air inlet pipe 255 is installed at one side of the housing 251, a spiral blade pipe 256 is installed in the air inlet pipe 255, and an air outlet pipe 257 is installed at the other side of the housing 251.
Referring to fig. 1, 2, 3, 8 and 9, the air compressing rotary air valve 20 and the work applying rotary air valve 21 each include a valve body 211 and a valve core 212 sleeved therein, the valve core 212 is provided with an air inlet channel 213 and an air outlet channel 214, a sealing ring 215 is installed in the middle of the valve core 212, bushings 216 are installed at two ends of the valve core 212, two shaft ends of the valve core 212 are sealed by a black mud packing 217 and a sealing end cover 218, cooling water jackets 219 are installed at two sides of the valve body 211, an air inlet 220 and an air outlet 221 are opened at one side of the valve body 211, and an air cylinder channel port 222 is opened at the other side of the valve body 211.
Referring to fig. 1 and 10, the piston 6 is formed by friction welding an upper piston body and a lower piston body, a cavity 61 is formed in the middle of the piston 6, an airtight ring 62 is installed in the middle of the outer wall of the piston 6, directional rings 63 are installed at two ends of the outer wall of the piston 6, and thermal barrier coatings are respectively arranged at the upper end and the lower end of the piston 6.
Referring to fig. 2, a compressed air pipe 41 is installed on the air storage branch pipe 24, and an electromagnetic valve 36 is disposed between the air storage branch pipe 24 and the compressed air pipe 41.

Claims (6)

1. A swash plate type opposed piston two-stroke external combustion engine comprises a cylinder body (1), wherein a main shaft hole is formed in the middle of the cylinder body (1), a main shaft (2) is arranged in the main shaft hole, swash plate boxes (3) are respectively arranged at two ends of the cylinder body (1), a swash plate (4) is arranged in each swash plate box (3), the swash plate (4) is sleeved on the main shaft (2), six axially-through cylinders (5) are uniformly arranged on the periphery of the main shaft hole, front and rear pistons (6) are oppositely arranged in the cylinders (5), piston rods (7) of the pistons (6) are connected with a slide block support (8) in each swash plate box (3), the slide block support (8) is in sliding connection with a guide rail on each swash plate box (3), a ball socket (9) of the slide block support (8) is in sliding connection with a spherical surface of a hemispherical slide block (10) in each swash plate box, the plane of the hemispherical sliding block (10) is in sliding connection with the swash plate (4), the rear end of the main shaft (2) is provided with a rear end cover (11), the rear end of the rear end cover (11) is provided with a flywheel (12), the flywheel (12) is sleeved at the rear end of the main shaft (2), a flywheel shell (13) is arranged outside the flywheel (12), the flywheel shell (13) is installed on the rear end cover (11), the front end of the main shaft (2) is provided with a front end cover (14), the front end surface of the front end cover (14) is provided with a gear box (15), the main shaft (2) at the front end of the gear box (15) is provided with a belt plate (16), a rotary air valve gear (17) is arranged in the gear box (15) corresponding to one air cylinder (5) respectively, a plurality of intermediate gears (18) are arranged in the gear box (15), and the rotary air valve gear (17) is engaged with the corresponding intermediate, a plurality of intermediate gears (18) are respectively meshed with a main shaft gear (19) at the front end of the main shaft (2), and the gear transmission mechanism is characterized in that:
the front end and the rear end of the air cylinder (5) are respectively provided with an air compression rotary air valve (20), the middle part of the air cylinder (5) is provided with a work applying rotary air valve (21), the air compression rotary air valve (20) at the front end of the air cylinder (5) is in transmission connection with a rotary air valve gear (17) through a transmission shaft (22), the air compression rotary air valve (20) at the front end of the air cylinder (5) is connected with the work applying rotary air valve (21) through a coupling (23), and the work applying rotary air valve (21) is connected with the air compression rotary air valve (20) at the rear end of the air cylinder (5) through the coupling (23);
nine pistons (6) in the twelve pistons (6) are subjected to air inlet from the environment through an air compression rotary air valve (20) and are subjected to primary compression to an air storage branch pipe (24), and three pistons (6) are subjected to air inlet from the air storage branch pipe (24) through the air compression rotary air valve (20) and are subjected to secondary compression to a combustion chamber (25);
the first-stage compression means that when the piston (6) moves upwards from the bottom dead center, the lower cavity of the piston (6) sucks air from the environment, and when the piston (6) moves downwards, the air is pressed into the air storage branch pipe (24);
the secondary compression means that the lower cavity of the piston (6) is filled with air from the air storage branch pipe (24) when the piston (6) moves upwards, and the air is pressed into the combustion chamber (25) when the piston (6) moves downwards;
in the six air cylinders (5), three air cylinders (5) perform primary work, and three air cylinders (5) perform secondary work;
the primary work is that after a piston (6) of a primary work cylinder crosses a top dead center, an air inlet channel (213) of a work rotary air valve (21) is opened, high-pressure gas is input into an upper cavity of the piston (6) by a combustion chamber (25) to push the piston (6) to do work downwards, when a certain point passes the top dead center, the air inlet channel (213) of the work rotary air valve (21) is closed, the high-pressure gas is expanded at a fixed entropy to push the piston (6) to continue to do work downwards until the bottom dead center, and after the piston (6) crosses the bottom dead center, an air outlet channel (214) of the work rotary air valve (21) is opened to discharge waste gas;
the first-stage working cylinder is a cylinder (5) where a piston (6) for second-stage compression is located;
the secondary work is that the piston (6) of the primary work cylinder leaves 60 degrees behind the top dead center, the piston (6) of the secondary work cylinder reaches the top dead center, at the moment, the air inlet channel (213) of the work rotary air valve (21) is opened, the combustion chamber (25) inputs the residual high-pressure gas into the upper cavity of the piston (6) to push the piston (6) to do work downwards, at a certain point before the bottom dead center, the air inlet channel (213) of the work rotary air valve (21) is closed, the high-pressure gas expands with constant entropy to push the piston (6) to continue to do work downwards until the bottom dead center, and after the piston (6) crosses the bottom dead center, the exhaust channel (214) of the work rotary air valve (21) is opened to exhaust waste gas;
the second-stage work-applying cylinder is a cylinder (5) provided with a front piston (6) and a rear piston (6) which are both used for first-stage compression.
2. A swash plate opposed piston two-stroke external combustion engine according to claim 1, wherein: the rotary air valve gear (17) is connected with a first conical gear (26), the rotary air valve gear (17) is sleeved on a transmission shaft (22), the transmission shaft (22) is installed on a front end cover (14) through a bearing seat (27), a second conical gear (28) is connected on the transmission shaft (22), a planetary gear shaft (29) is vertically inserted in a position, located between the first conical gear (26) and the second conical gear (28), of the transmission shaft (22), a third conical gear (30) is connected with positions, located on two sides of the transmission shaft (22), of the planetary gear shaft (29), the third conical gear (30) is meshed with the first conical gear (26) and the second conical gear (28), one end of the planetary gear shaft (29) is connected with one end of a return spring (31), and the other end of the return spring (31) is connected with a fixing rod (32) in a gear box (15), the other end of the planet gear shaft (29) is connected with a cam (33), and the cam (33) is in contact with a roller (35) on the voice coil motor (34).
3. A swash plate opposed piston two-stroke external combustion engine according to claim 1, wherein: the combustion chamber (25) comprises a shell (251), a thermal barrier coating and an inner container (252) are embedded and cast in the shell (251), an oil nozzle (253) is installed at the top of the shell (251), a spark plug (254) is installed at the bottom of the shell (251), an air inlet pipe (255) is installed at one side of the shell (251), a spiral blade pipe (256) is installed in the air inlet pipe (255), and an air outlet pipe (257) is installed at the other side of the shell (251).
4. A swash plate opposed piston two-stroke external combustion engine according to claim 1, wherein: the air compression rotary air valve (20) and the work-doing rotary air valve (21) respectively comprise a valve body (211) and a valve core (212) sleeved in the valve body, the valve core (212) is provided with an air inlet channel (213) and an air outlet channel (214), a sealing ring (215) is installed in the middle of the valve core (212), bushings (216) are installed at two ends of the valve core (212), two shaft ends of the valve core (212) are sealed through a black mud packing (217) and a sealing end cover (218), cooling water jackets (219) are arranged on two sides of the valve body (211), an air inlet (220) and an air outlet (221) are formed in one side of the valve body (211), and an air cylinder passage port (222) is formed in the other.
5. A swash plate opposed piston two-stroke external combustion engine according to claim 1, wherein: the piston (6) is formed by welding an upper piston body and a lower piston body, a cavity (61) is formed in the middle of the piston (6), an airtight ring (62) is installed in the middle of the outer wall of the piston (6), directional rings (63) are installed at two ends of the outer wall of the piston (6), and thermal barrier coatings are arranged at the upper end and the lower end of the piston (6).
6. A swash plate opposed piston two-stroke external combustion engine according to claim 1, wherein: and a compressed air pipe (41) is arranged on the air storage branch pipe (24), and an electromagnetic valve (36) is arranged between the air storage branch pipe (24) and the compressed air pipe (41).
CN202010523983.2A 2020-06-10 2020-06-10 Swash plate type opposed piston two-stroke external combustion engine Active CN111810291B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2748891A1 (en) * 1977-11-02 1979-05-10 Berthold Pfaff Opposed piston type IC engine - has pistons connected to respective swashplates rigidly fixed on common output shaft
EP0663513A1 (en) * 1994-01-18 1995-07-19 Alfred Dipl.-Ing. Achammer Swashplate internal combustion engine
US20080190398A1 (en) * 2005-09-23 2008-08-14 Marcel Geirnaert Engine with pistons aligned parallel to the drive shaft
CN201193566Y (en) * 2008-04-29 2009-02-11 刘望见 Swash plate type two-stroke opposed piston internal combustion engine
CN104975980A (en) * 2015-07-13 2015-10-14 刘望建 External heating power opposed-piston type engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2748891A1 (en) * 1977-11-02 1979-05-10 Berthold Pfaff Opposed piston type IC engine - has pistons connected to respective swashplates rigidly fixed on common output shaft
EP0663513A1 (en) * 1994-01-18 1995-07-19 Alfred Dipl.-Ing. Achammer Swashplate internal combustion engine
US20080190398A1 (en) * 2005-09-23 2008-08-14 Marcel Geirnaert Engine with pistons aligned parallel to the drive shaft
CN201193566Y (en) * 2008-04-29 2009-02-11 刘望见 Swash plate type two-stroke opposed piston internal combustion engine
CN104975980A (en) * 2015-07-13 2015-10-14 刘望建 External heating power opposed-piston type engine

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