CN201943805U - Double row piston rotary engine - Google Patents

Abstract

A double-row piston rotary engine belongs to the field of power machinery. It consists of a main shaft (1), two symmetrically facing elliptical orbit groove discs (2), two symmetrical exhaust double-layer sleeves (3), double T-shaped rolling connecting rods (4), and two-way cylindrical rotary cylinders. Body (5), reversing gear (6), gear shaft (7), crank connecting rod piston type single-cylinder engine head (8), piston (9), piston rod rack (10), cylindrical casing (11) etc. are formed; 2 or 4 or more even-numbered heads (8) are installed symmetrically with the center on two sides of the head tray (12) respectively to form a double-row piston type rotary engine head assembly; A rolling connecting rod bearing (18) is inserted into two symmetrically facing elliptical track grooves (19); two piston rod racks (9) and two vertical bar racks (20) are respectively meshed with two direction changing gears . Simple and compact structure, high efficiency, energy saving and emission reduction, long service life, stable operation, low vibration, low noise, can be made into gasoline engine or diesel engine, suitable for various fuels.

Description

double row piston rotary engine

Technical field: belongs to the field of power machinery.

Background technique:

The technical point of the internal combustion engine that is widely used in the world today is a variable capacity mechanism, which can generate enough compression ratio to complete the heat cycle and output torque to do work. The key core technology is the sealing problem between the piston and the cylinder wall in the unit volume, as well as the technical performance indicators such as power, economy and emission. For more than 100 years, the crank-connecting rod piston internal combustion engine, which has been dominant in the engine field, has been very mature. In recent years, the engine has entered the "electronic age", and its development and progress have almost reached the level of "perfect". The mechanism of the rod-piston type has brought the following structural disadvantages that are difficult to overcome: (1) the structure is complex, heavy, and the machining accuracy of the parts is high; (2) the reciprocating inertial shock vibration and the torsional vibration of the crankshaft shaft Large, loud noise, great harm to the body, affecting service life; (3) low thermal efficiency, 25%-30% for gasoline engines, 30%-40% for diesel engines, and only 40%-50% for supercharged diesel engines, That is to say, only 25%-50% of the heat is turned into useful work, while 50%-75% of the heat is lost in various forms, and the biggest loss is the heat taken away by the exhaust gas, which accounts for the proportion of the total heat It is as high as 25%-50%, which is amazing. The main reason why such a large amount of heat energy is taken away is the poor digestion and absorption capacity of the crank-connecting-rod-piston mechanism itself, which is mainly manifested in the conversion of the linear motion of the piston into the crankshaft. In the process of rotating motion, its conversion efficiency is far lower than 50%, and more than 50% of the heat can not be converted, and has to become waste gas to be discharged and taken away; (4) power is poor, and the output torque is small. The main reason is that when the crank connecting rod converts the combustion expansion pressure received by the piston into the rotational power of the crankshaft, more than 50% of the expansion pressure cannot be converted into the rotational power of the crankshaft, so the rotational power is small, and the second is to reduce the inertia Vibration, the radius of gyration of the crank should be designed as short as possible, so that the smaller rotational power is multiplied by the smaller rotational arm, and only a small product can be obtained, and this small product is the output torque; (5) Crankshaft processing requires high technical conditions, high processing difficulty and high processing cost. Especially for high-power or super-high-power multi-cylinder internal combustion engines, in order to balance the inertial force, in addition to increasing the balance mass, the arrangement of the cylinders should also be designed in various types such as V-shaped, star-shaped, X-shaped, and king-shaped, so that The greater the power, the greater the number of cylinders, the more complex the structure of the model, the more the number of cranks, the longer the crankshaft, and the more complex the arrangement of the cranks, the more difficult it is to process, which makes it a bottleneck technology in the internal combustion engine manufacturing industry. difficulties.

The disadvantages mentioned above are all caused by the structure of the crank-connecting rod piston engine itself, and it is difficult to overcome for a long time. These are old problems known to the world. Thousands of experts and scholars all want to break through the structure of traditional engines, but they have not been successful for more than one hundred years.

The "Wankel" triangular piston rotary engine that has gradually matured, compared with the traditional crank-connecting rod piston engine, saves the heavy transmission mechanism of the crankshaft and connecting rod, and also saves the complicated gas distribution mechanism, etc. The structure is simple, the weight is light, and the two vibrations produced by the traditional crank-connecting-rod-piston machine are eliminated, and the combustion expansion force is directly converted into the rotational power of the main shaft, so it runs relatively smoothly, with small vibration and low noise. These performance characteristics It is a great improvement over the traditional crank-connecting-rod-piston machine. But it has been unable to replace the traditional crank-connecting rod-piston machine, which is caused by serious defects caused by its own structure. First of all, it requires high processing technology and high manufacturing cost. The second is high fuel consumption, low thermal efficiency, and poor power performance. The third is poor sealing, small pressure ratio, insufficient combustion, poor emission performance, and serious pollution. The fourth is that it is only suitable for high-speed occasions such as light-duty and low-power racing cars and motorcycles. When the speed is slow and idling, the sealing between the air chambers will decrease, and the air leakage and smoke will be serious; the fifth is that it can only be used as a gasoline engine with a small pressure ratio. Make a compression ignition diesel engine. At present, the world's requirements for engine emission performance are becoming more and more stringent. In addition, the oil crisis has been wave after wave, and the oil price has remained high, which fundamentally limits its development.

Invention content:

In view of the disadvantages, defects and deficiencies of the above-mentioned current engines, I have developed a new model with simple structure, stable operation, high efficiency and energy saving - "double-row piston rotary engine" for replacement. This purpose is achieved through the following methods "Double-row piston rotary engine" consists of a main shaft, two elliptical orbital grooves facing each other symmetrically on the left and right, two symmetrical exhaust double-layer sleeves on the left and right, double T-shaped rolling connecting rods, and a two-way cylindrical rotary cylinder. Body, reversing gear, reversing gear shaft, traditional crank-connecting rod piston type single-cylinder engine head, piston, piston rod rack, cylindrical casing, etc.; the main shaft passes through the left elliptical track groove from left to right The center of the disc body, the center of the bottom of the left exhaust double-layer sleeve, the center of the center of the head tray in the middle of the two-way cylindrical rotary cylinder, the center of the bottom of the right exhaust double-layer sleeve, the center of the disc of the right elliptical track groove, Realize 5-center coaxial; the main shaft is connected to the left and right two symmetrically facing elliptical orbit grooves in turn with two main shaft bearings, and the left and right two symmetrical exhaust double-layer sleeves are symmetrically fixed and connected with two pairs of flat keys. The middle head tray of the two-way cylindrical rotary cylinder is fixedly connected with the spline; The ends are respectively fixed on the inner side faces of the left and right two symmetrically facing elliptical orbital groove discs; the bottoms of the left and right two symmetrically opposite oval orbital grooved discs are fixed on the machine base, which is the supporting and fixing member of the engine.

The double T-shaped rolling link is composed of a horizontal bar and two vertical bars. The two vertical bars are welded on the horizontal bar parallel to each other and vertically. The three bars are on the same plane. The connecting rod bearings are respectively inserted into two symmetrically facing elliptical track grooves; the two vertical rods respectively pass through the wall of the two-way cylindrical rotary cylinder on both sides of the head tray to connect with the two vertical rod racks, and the vertical rods The center line and the center line of the vertical bar rack are kept in a straight line and can pass through the center of the tray; the back of the vertical bar rack is close to the positioning needle roller row, and the needle roller row is vertically fixed on the side of the head tray by the rack Above; both the vertical rod rack and the piston rod rack are meshed with the direction changing gear at the same time, the vertical rod rack and the piston rod rack cross up and down in the air without interfering with each other, and the direction changing gear is vertically fixed on the head support by the direction changing gear shaft On the side of the frame; the vertical bar rack installed on the two sides of the head bracket at the same time, the rack positioning needle roller row, rack rack, and direction changing gear correspond to each other one by one back to back.

The front end of the main shaft is provided with a central through hole for combustible gas mixture. Two radial through holes of the main shaft are respectively drilled on both sides of the head tray corresponding to the position of the machine head. These two radial through holes communicate with the central through hole for supplying One end of the oil-gas manifold is connected with the radial through hole, and the other end is connected with the intake reed valve on the machine head.

An internal rotary sealing pipe joint is installed at the front end of the main shaft, and a single-point electronic continuous fuel injector and an air-supply swirl air jet head are installed in the pipe joint. The air pump is connected and controlled by the electronic control unit ECU.

An exhaust cone annular chamber is respectively opened on the inner side surface of the left and right two symmetrically facing elliptical orbital groove disks close to the inner wall of the orbital groove, and three concentric rectangular rings are respectively set on the inner and outer end surfaces of the opening of the chamber. An X-shaped rubber sealing ring is installed in the circular groove; on the inner and outer cylinder walls near the mouth of the left and right two symmetrical exhaust sleeves, a sealing circular ring cover plate vertical to the inner and outer walls is respectively set. The left and right two symmetrical exhaust double-layer sleeves are provided with axial exhaust vanes between the inner and outer walls of the cylinder; the mouths of the left and right two symmetrical exhaust double-layer sleeves are respectively inserted into the left and right symmetrical exhaust cones In the opening of the annular chamber, and sliding contact with it, at the same time, the sealing annular cover plate is pressed on the X-shaped rubber sealing ring and sliding contact; at the lower side of the left and right two symmetrically facing exhaust cone annular chambers Open an outer exhaust hole and connect the outer exhaust muffler pipe.

An intake reed valve, a spark plug and an exhaust rotary valve are respectively installed on the cylinder head of the machine head; one end of the exhaust manifold is connected with the exhaust rotary valve, and the other end is connected with the exhaust double-layer sleeve.

Two or four or more even-numbered traditional crank-connecting-rod piston-type single-cylinder engine heads are fixed symmetrically to the center on both sides of the middle head tray of the two-way cylindrical rotating cylinder body. In the tangential direction of the head tray, the heads and tails are arranged clockwise; the heads installed on the two sides of the head tray correspond to each other one by one, forming a double-row multi-cylinder piston rotary engine head assembly back to back. Each machine head is equipped with a piston, a piston rod rack, a piston rod rack positioning needle roller row, a rack, a direction changing gear, a direction changing gear shaft, a vertical rod rack, a vertical Rod rack positioning needle roller rack, a vertical rod rack positioning needle roller rack, an oil supply manifold, an intake reed valve, a spark plug, an exhaust rotary valve, an exhaust manifold, half Two double T-shaped rolling connecting rods, one connecting rod bearing, multiple connecting rod bearings share an elliptical track groove on the same side, multiple exhaust manifolds, and one exhaust double-layer sleeve on the same side.

Cooling lubricating oil is installed in the cylindrical casing, an air-cooled cooling structure is set on the outer cylindrical surface, an oil inlet valve and an oil discharge valve are respectively arranged on two sides of the cylinder, the two valves are connected with the oil cylinder pump, and Controlled by the electronic control unit ECU.

Compared with the current traditional engine, this model has the following obvious advantages:

(1) There are innovations and breakthroughs in the overall structure, and the heart of the current engine has been reborn, which not only breaks through the structure of the crank-connecting rod piston engine, but also breaks through the "Wankel" triangular piston rotary engine The structure, independently innovated a new model. Therefore, all the disadvantages caused by the existing engine self structure have been effectively alleviated or eradicated. First of all, the rotary cylinder structure, central symmetric design and double-row symmetric design of this model are convenient to realize the dynamic and static balance of the engine itself. The center of rotation is its own geometric center and mass center, and there is no eccentricity problem. The stroke boundary is clear and the transition is smooth and stable, so it is very easy to eliminate the mechanical vibration, and it also completely eliminates the two major disasters of the high-speed reciprocating inertial impact vibration of the crank-connecting rod piston engine and the torsional vibration of the crankshaft shaft system; The mass of the body is relatively large, and its moment of inertia is sufficient to play the role of a flywheel, so the heavy full-time flywheel can be saved; and the structure of this model is simple, which not only removes the heavy crank-link mechanism, but also removes the complicated assembly. Pneumatic mechanism, a large number of parts and components are greatly reduced, and the weight is greatly reduced. In addition, the parts are simple and suitable for mass production, which will greatly reduce manufacturing costs, reduce failures, increase work reliability, and facilitate maintenance. Great benefits, The parts quantity, weight and processing cost of this model are all 40%-50% of the crank-connecting rod piston type four-stroke engine with the same power.

(2) The thermal efficiency, power, economy and emission of the main technical performance indicators of the engine have been greatly improved and improved, especially breaking through the limit value of the crank-connecting rod piston engine thermal efficiency which has always been lower than 50%, The transmission mechanism of this model only undertakes the task of changing capacity to complete the thermal power cycle, and no longer undertakes the task of force transmission and conversion. In addition to a small amount of heat transfer and heat loss, almost all the combustion expansion force can be directly converted into the rotational power of the main shaft, saving the intermediate conversion link of the crank connecting rod. It is reasonable to infer that the thermal efficiency of this model is 50% higher than that of the crank connecting rod piston engine. From the above, it is inferred that the energy saving effect of this model should be more than 50% compared with the crank-connecting rod piston engine, which is logical; energy saving means reducing fuel consumption, and the engine also realizes low emission while reducing fuel consumption; Compared with the crank-connecting rod piston engine with the same basic unit volume, it is reasonable that its power and output torque should be more than doubled. Compared with the triangular piston rotary engine of the German genius inventor Dr. Wankel, its energy-saving effect will be better, and its power, economy and emission will be greatly improved and improved.

(3) The four-stroke thermal power cycle can be completed once the main shaft of this model rotates one revolution. Compared with the crank-connecting rod piston four-stroke engine, the crankshaft needs to rotate two revolutions to complete one four-stroke thermal power cycle, and its working efficiency is improved by a whole. times, the high efficiency lives up to its name.

(4) This model ① is a rotary cylinder structure, and there is no high-speed reciprocating inertial shock vibration, torsional vibration and noise generated by the crankshaft during operation; ②The piston is not subject to lateral thrust, so the piston ring The contact with the cylinder wall will not be biased, and the surrounding force will be uniform; ③The work efficiency is doubled; ④The combustion expansion force is directly converted into the rotational power of the main shaft and doubled; ⑤This model uses an intake reed valve , The exhaust rotary valve replaces the fungal valve of the crank-connecting rod piston type four-stroke engine, which not only solves the problem of the inertia of the fungal valve obstructing the air flow, and the sealing problem of the valve at high speed, but also solves the problem of overheating of the fungal exhaust valve. And avoid the tempering phenomenon of the mushroom valve and a series of problems caused by sealing, lubrication, oil consumption, etc., combined with the above favorable conditions, the limit of increasing the engine speed can be broken through, it is reasonable to infer that this model is in the It is reasonable and reasonable that the theoretical safety limit speed should be doubled than that of the crank-connecting rod piston type four-stroke engine.

(5) The volume and weight of this model are 40%-50% of the same power crank-connecting rod piston four-stroke engine, especially the main shaft of this model is a common cylindrical shape, and its processing and manufacturing is much easier than that of a crankshaft. Thus fundamentally solved the "bottleneck" technical problem of multi-cylinder four-stroke internal combustion engine crankshaft processing. From the two conditions of specific gravity and crankshaft processing alone, this model can break through the limit of the current crankshaft connecting rod piston internal combustion engine with a single maximum power of 48000PS .

(6) The comprehensive index of noise of this model is low, which is beneficial to environmental protection. (1) Due to the slight vibration, the noise emitted by the vibration source is relatively low; (2) The intake and exhaust cylinders of this model share one intake and exhaust manifold, and the working frequency is doubled, so the intake and exhaust airflow Flowing in the pipe, the pressure and flow rate are relatively uniform and stable, which can effectively prevent the generation of air pulsation during the intake and exhaust process, thereby eliminating or significantly reducing the generation of intake and exhaust noise.

(7) It has a wide range of applications. It can be made into a gasoline engine or a diesel engine, and can be applied to various fuels.

Description of drawings:

Figure 1 is a schematic diagram of the overall structure of the model;

Fig. 2 is the layout orientation schematic diagram of the traditional crank-connecting rod piston type single-cylinder engine head (8) of this model on the two sides of the middle head tray (12) of the bidirectional cylinder (5);

Fig. 3 is the structural representation of two elliptical track groove disc bodies (2) facing opposite each other symmetrically;

Fig. 4 is the structural representation of two symmetrical exhaust double-layer sleeves (3) on the left and right;

Fig. 5 is a schematic structural view of a double T-shaped rolling link 3;

FIG. 6 is a schematic structural view of the bidirectional cylindrical rotating cylinder body 5 .

In the figure, the main shaft (1), the left and right two elliptical orbital grooves facing each other symmetrically (2), the left and right two symmetrical exhaust double-layer sleeves (3), the double T-shaped rolling connecting rods (4), and the two-way cylinder Transformation cylinder (5), direction change gear (6), direction change gear shaft (7), traditional crank connecting rod piston type single cylinder engine head (8), piston (9), piston rod rack (10) , cylindrical casing (11), middle head tray (12) of bidirectional cylindrical rotary cylinder body (5), main shaft bearing (13), double flat key (14), spline (15), double T Crossbar (16) of T-shaped rolling link (4), vertical bar (17) of double T-shaped rolling link (4), connecting rod bearing (18), elliptical track groove (19), vertical bar rack (20 ), vertical bar rack positioning needle roller row (21), vertical bar rack positioning needle roller rack (22), main shaft combustible mixture center through hole (23), main shaft radial through hole (24), oil gas supply Manifold (25), Inlet Reed Valve (26), Internal Rotary Seal Fitting (27), Single Point Electronic Continuous Injector (28), Air Supply Scroll Jet (29), Exhaust Cone Ring Chamber (30), rectangular sealing annular groove (31), X-shaped rubber sealing ring (32), sealing annular cover plate (33), axial exhaust vane (34), outer exhaust hole (35) , outer exhaust muffler pipe (36), spark plug (37), exhaust rotary valve (38), exhaust manifold (39), piston rod rack positioning needle roller row (40), piston rod rack positioning needle roller Row rack (41), oil inlet valve (42), oil discharge valve (43).

Detailed ways:

Because this model is a double-row symmetrical structure, the crank-connecting rod piston type single-cylinder engine head (8) and its corresponding supporting parts are fixedly installed on the two sides of the head tray (12) and are in one-to-one correspondence with each other. Back-to-back, the two parallel vertical bars (17) of the double T-shaped rolling link (3) are respectively connected with the transmission parts on both sides at the same time, and the two vertical bars (17) are connected to the double T-shaped rolling link (3). Driven by it, its movement is synchronous and its direction is exactly the same. For ease of description, simple and clear, only one side of the pallet (12) is described below for the single-row head movement and work process, and the model is further described in detail below in conjunction with the description of the drawings and specific implementation methods: design elliptical track groove (major axis- Minor axis)÷2=piston stroke S; suppose the major axis of the elliptical track groove is in the vertical position up and down, the lower apex is 0°, rotate clockwise, and look forward from the output end of the main shaft (1): when the starter When driving the main shaft (1) to rotate clockwise, the two-way cylindrical rotating cylinder body (5) rotates synchronously together, and the rotating cylinder body (5) drives the double T-shaped rolling connecting rod (4) to rotate, which drives the rolling connecting rod bearing ( 18) Through the orientation of the long and short axes of the elliptical orbital groove in turn, under the alternating action of the thrust of the inner wall of the elliptical orbital groove and the pulling force of the outer wall, the bearing (18) will also perform centripetal reciprocating linear motion while synchronously rotating with the rotating cylinder. Just drive the vertical bar rack (20) and also do centripetal reciprocating linear motion at the same time, just drive the direction changing gear (6) to do positive and negative rotation, just drive the piston rod rack (10) to make the centerline direction of the machine head The reciprocating linear motion will drive the piston (9) to reciprocate linear motion in the cylinder, and the main shaft (1) will drive the double T-shaped rolling connecting rod (3) to make two centripetal reciprocating motions, which will also drive the piston (9) Do two reciprocating linear motions in the cylinder, thereby completing a four-stroke thermal power cycle and doing work once. The specific working process is described in detail as follows: when the starter drives the main shaft (1) to rotate, the connecting rod bearing (18) starts to be subjected to the pulling force of the outer wall of the elliptical orbital groove (19) from 0° at the lower apex of the long axis of the elliptical orbital groove (19) to The apex of the minor axis of the elliptical track groove (19) rolls and slides, drives the vertical bar rack (20) to move in a centripetal line, drives the direction changing gear (6) to rotate counterclockwise, and drives the piston rod rack (10) Move toward the tail of the machine head, and at the same time pull the piston (9) toward the tail of the cylinder, a straight space appears in the cylinder, the intake reed valve (26) automatically opens, the intake stroke starts, and the oil-air mixture is quickly squeezed into the cylinder, when When the bearing (18) passes through the apex of the minor axis of the 90° elliptical track groove, the piston (9) is pulled to the farthest point of the cylinder by the piston rod rack (10), and the intake reed valve (26) closes the intake stroke and the work is completed; 90°-180°, the bearing (18) is subjected to the thrust of the inner wall of the elliptical orbital groove (19), and rolls and slides to the apex on the long axis of the elliptical orbital groove (19), driving the vertical bar rack (20) to perform centrifugal linear motion, Drive the direction-changing gear (6) to rotate clockwise, drive the piston rod rack (10) to move to the top of the machine head, push the piston (9) to the top of the machine head cylinder, and compress the gas in the cylinder, when the bearing ( 18) When reaching the apex on the long axis of the 180° elliptical orbital groove (19), the piston (9) is pushed to the top of the cylinder, and the compression stroke is completed, rolling on the connecting rod bearing (18) from 180°-270° to ignition When the orientation of the advance angle is reached, the spark plug (37) ignites on time, and the oil-gas mixture burns and expands to do work to push the two-way cylindrical rotating cylinder (5) to rotate clockwise, driving the main shaft (1) to rotate clockwise together, and the external output torque to rotate Power, the double T-shaped rolling link bearing (18) rolls and slides towards the apex of the minor axis of the elliptical orbital groove (19) under the pulling force of the outer wall of the elliptical orbital groove (19), driving the vertical rod rack (20) to make a centripetal straight line movement, drive the reversing gear (6) to rotate counterclockwise, and drive the piston rod rack (10) to move towards the tail direction. Piston (9) is pulled to the farthest point of cylinder tail end by piston rod rack (10), and the work of expansion power stroke is completed. Open the exhaust rotary valve (38) from 270°-360°, the double T-shaped rolling connecting rod bearing (18) is subjected to the thrust of the inner wall of the elliptical orbital groove (19), and moves from the apex of the short axis of the elliptical orbital groove (19) to the long Rolling and slipping in the direction of the apex under the shaft drives the vertical bar rack (20) to move in a centrifugal linear motion, drives the direction changing gear (6) to rotate clockwise, and drives the piston rod rack (10) to move toward the top of the machine head. The piston (9) is pushed to the top of the cylinder, and when the bearing (18) rolls to the lower apex of the major axis of the 360° elliptical orbit groove (19), the piston (9) is pushed back to the upper apex of the cylinder by the piston rod rack (10) , the exhaust stroke work is completed, the exhaust rotary valve (38) is closed, completes a thermal power cycle, and does work once. After the engine is ignited and started, it is fully capable of completing the four-step thermal power cycle by relying on the moment of inertia stored by itself. External force, the starter is disengaged, stops working, and the engine starts a new cycle, repeating itself.

Claims (8)

1. The double-row piston rotary engine is characterized in that it consists of: main shaft (1), two left and right symmetrical elliptical orbital groove discs (2), two left and right symmetrical exhaust double-layer sleeves (3), Double T-shaped rolling connecting rod (4), two-way cylindrical rotary cylinder (5), reversing gear (6), reversing gear shaft (7), traditional crank connecting rod piston type single cylinder engine head (8) , piston (9), piston rod rack (10), cylindrical casing (11), etc.; the main shaft (1) passes through the center of the left elliptical track groove plate (2) from left to right, and the left row The center of the cylinder bottom of the air double-layer sleeve (3), the center of circle of the middle head tray (12) of the two-way cylindrical rotary cylinder (5), the center of the cylinder bottom of the right exhaust double-layer sleeve (3), the right The center of the elliptical orbital groove disc body (2) realizes the coaxiality of 5 centers; the main shaft (1) is connected with the left and right symmetrically facing elliptical orbital grooved disc bodies (2) with two main shaft bearings (13) in turn, and is connected with the Two symmetrical exhaust double-layer sleeves (3) on the left and right are symmetrically fixedly connected with two pairs of flat keys (14), and are connected with the middle head tray (12) of the two-way cylinder-shaped rotary cylinder body (5) with splines (15). ) is fixedly connected; the cylindrical casing (11) is set on the outside of the left and right symmetrical exhaust double-layer sleeves (3) and the two-way cylindrical rotating cylinder body (5), and its two ends are fixed on the left and right sides respectively. The inboard end faces of two symmetrically facing elliptical track groove disc bodies (2); the bottoms of the two disc bodies (2) are fixed on the machine base, and the machine base is the support and fixed member of the engine. 2. The double-row piston rotary engine according to claim 1, characterized in that: the double T-shaped rolling link (3) is made up of a cross bar (16) and two vertical bars (17); two vertical bars ( 17) Welded on the cross bar (16) parallel to and perpendicular to each other, the three bars are on the same plane; the two ends of the cross bar (16) are respectively installed with a connecting rod bearing (18), respectively inserted into two symmetrically facing elliptical In the track groove (19); two vertical rods (17) pass through the cylinder wall of the two-way cylindrical rotating cylinder body (5) on both sides of the tray (12) respectively, and are connected with the two vertical rod racks (20). The center line of the rod (17) and the center line of the vertical rod rack are kept on a straight line and can pass through the center of the head tray (12), and the back of the vertical rod rack (20) is close to the positioning needle row (21). , the needle row (21) is vertically fixed on the side of the head tray (12) by the rack (22); the vertical rod rack (20) and the piston rod rack (10) are simultaneously connected with the direction changing gear (6) Mesh with each other, the vertical rod rack (20) and the piston rod rack (10) cross up and down in the air without interfering with each other; the direction changing gear (6) is vertically fixed on the head tray (12) by the direction changing gear shaft (7) On the side; the vertical rod rack (20) installed simultaneously on the two sides of the head tray (12) locates the needle roller row (21), and the rack (22) direction changing gear (6) corresponds to each other one by one back to back. 3. The double-row piston rotary engine according to claim 1, characterized in that: a combustible mixture center through hole (23) is provided at the front end of the main shaft (1), and the corresponding machine heads are located on both sides of the machine head tray (12). (8) Two radial through-holes (24) are drilled in the azimuth to communicate with the central through-hole (23). One end of the oil supply manifold (25) is connected with the radial through-hole (24), and the other end is connected with the machine head (8 ) on the inlet reed valve (26) connection. 4. The double-row piston rotary engine according to claim 1, characterized in that: an internal rotary sealing pipe joint (27) is installed at the front end of the main shaft (1), and a single-point electronic continuous Fuel injector (28), an air supply scroll nozzle (29), (28) (29) are connected with oil cylinder, oil pump, cylinder, air pump respectively, and are controlled by electronic control unit ECU. 5. The double-row piston-type rotary engine according to claim 1, characterized in that: on the inner end faces of the left and right two symmetrically facing elliptical orbital groove disks (2), one exhaust gas is respectively opened near the inner wall of the orbital groove Conical annular chamber (30), three concentric rectangular annular grooves (31) are respectively provided on the inner and outer end faces of the opening of the chamber (30), and X-shaped rubber sealing rings (32) are installed in the annular grooves (31); On the inner and outer cylinder walls near the mouth of the two symmetrical exhaust double-layer sleeves (3) on the left and right, the sealing annular cover plate (33) of the vertical inner and outer walls is established; on the left and right two symmetrical exhaust double-layer sleeves Axial exhaust vanes (34) are arranged between the inner and outer walls of (3), and the mouths of the left and right two symmetrical exhaust double-layer sleeves (3) are respectively inserted into the left and right symmetrical exhaust cone annular chambers facing each other In the opening of (30), and sliding contact with it, the sealing ring-shaped cover plate (33) is pressed on the X-shaped rubber sealing ring (32) and sliding contact; in the left and right two symmetrical exhaust cone annular chambers facing each other The side lower part of chamber (30) has outer exhaust hole (35), connects outer exhaust muffler pipe (36). 6. The double-row piston rotary engine according to claim 1, characterized in that: an intake reed valve (26), a spark plug (37), and an exhaust rotary valve are respectively installed on the cylinder head of the machine head (8). (38), one end of the exhaust manifold (39) is connected with the exhaust rotary valve (38), and the other end is connected with the exhaust double-layer sleeve (3). 7. The double row piston type rotary engine according to claim 1, characterized in that: on the two sides of the middle head tray (12) of the bidirectional cylindrical rotating cylinder body (5), they are respectively fixed symmetrically with the center 2 or 4 or more even-numbered traditional crank-connecting rod piston-type single-cylinder engine heads (8) are installed, the center line of which is on the tangential direction of the pallet (12), and the head and tail of the head (8) are clockwise The directions are arranged sequentially; the machine heads (8) installed on the two sides of the tray (12) correspond to each other one by one, forming a double-row multi-cylinder rotary engine head assembly back to back; each machine head (8) corresponds to a matching piston (9 ), a piston rod rack (10), a piston rod rack positioning needle roller row (40), a bent frame (41), a reversing gear (6), a reversing gear shaft (7), a vertical Rod rack (20), a vertical bar rack positioning needle roller row (21), a vertical bar rack roller rack (22), an oil and gas supply manifold (25), and an air intake reed valve (26), a spark plug (37), an exhaust rotary valve (38), an exhaust manifold (39), half a double T-shaped rolling connecting rod (3), a connecting rod bearing (18), many The same side of the connecting rod bearings (18) share an elliptical track groove (19), and the same side of a plurality of exhaust manifolds (39) share an exhaust double-layer sleeve (3). 8. The double-row piston-type rotary engine according to claim 1, characterized in that: the cylindrical casing (11) is equipped with cooling lubricating oil, and an air-cooled cooling structure is arranged on its outer cylindrical surface, and on its two sides An oil inlet valve (42) and an oil discharge valve (43) are respectively arranged, and the two valves are connected with the oil cylinder oil pump and controlled by the electric control unit ECU. the

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