CN101852131B - Bidirectional elliptic gear engine - Google Patents

Abstract

A two-way elliptical gear engine, the whole machine is cylindrical in shape; inside the engine, an output shaft, a bearing, a disc component, a plurality of pistons, and an elliptical gear constitute a cylindrical rotor; a stator is composed of two opposing shells, an intake and exhaust valve, a plurality of hot plugs, a gear rack, and a plurality of double eccentric gears; the space between the rotor and the stator constitutes an annular combustion chamber, and a plurality of pistons rotate in the annular chamber and divide the combustion chamber into a plurality of cylinders; a transmission system is composed of an elliptical gear, a double eccentric gear, and a disc internal gear to enable the pistons to perform a one-way differential transposition rotation, thereby changing the volume between the cylinders and realizing a 4-stroke engine.

Description

bidirectional oval gear engine

a technical field

The invention relates to a two-way engine with a transmission mechanism composed of elliptical gears, in particular to a small-volume, large-volume engine that can be rotated in reverse and has no connecting rod mechanism. horsepower engine.

Two background technology

Among the existing engines at present, the more mature engines of technology are mainly reciprocating piston engines and triangular rotor engines for vehicles. Wherein the reciprocating piston engine has come out more than 100 years, and people have improved it all the time for many years, but there are still many unavoidable problems. For example, the movement form of the piston is reciprocating. Even if the piston is made of very light metal, it is impossible to completely avoid the existence of inertia, resulting in a low limit speed of the engine. When performing the compression stroke, the ignition time of the spark plug should be strictly controlled to prevent power reduction caused by premature ignition or insufficient combustion caused by too late ignition. The complex intake and exhaust valve mechanism increases the noise, weight and volume of the whole machine. The use of connecting rod and camshaft transmission makes the engine volume too large, and the power-to-weight ratio of the whole machine is too small. When the cylinder is changed to two-stroke, it helps to increase the power, but the intake and exhaust methods make the fuel combustion insufficient and cause air pollution.

In contrast, the triangular rotor engine is much better, because its unique ventilation method and piston movement form can easily increase the limit speed of the whole machine, making the power and weight of the whole machine better than that of a reciprocating engine. But it also has many deficiencies, for example, the torque is too low when running at low speed, so it is not suitable for off-road vehicles, but only suitable for high-speed racing vehicles. In addition, when the triangular rotor is in motion, the shape of the cylinder formed is not conducive to gas combustion, resulting in excessive fuel consumption and insufficient combustion of the whole machine. It is not easy to popularize and mass-produce in today's global energy-saving environment. In addition, its unique cylinder material and sealing problems have increased difficulties in manufacturing and maintenance, and are not suitable for popularization. When reverse rotation is required under special circumstances, a complex transmission system is required to assist, thereby reducing the mechanical efficiency of the equipment.

Three invention content

In order to manufacture an ideal engine, the present invention proposes a completely new solution. The engine is composed of a rotor and a stator, so that the engine is extremely convenient for installation and maintenance. The components constituting the rotor include an output shaft fixed at the central axis of the stator. In the middle part of the output shaft, two disc-shaped components are fixed opposite to each other. The components can rotate around the output shaft. A piston is fixed on the disc component, and two disc-shaped components with a difference of 90 degrees are fixed at both ends of the output shaft. oval gear. The components constituting the stator include two upper and lower opposite housings, and a double eccentric gear installed on the housings. The cylinder of the engine is formed by the space between the rotor and the stator, and its shape is a closed tubular annular cavity, which is composed of the outer ring wall of the disc member and the inner ring wall of the stator. The valve mechanism responsible for ventilation is changed into an air hole, which is formed by combining the upper and lower shells. Because of the unique movement mode of the piston, the ventilation of the whole machine does not require a valve mechanism. The spark plug is changed to a hot plug, and it is always in a high-heat state in the cylinder, so that the engine never stops and the gas burns fully. The start of the engine only needs to be ignited once. The movement form between the pistons is differential transposition rotation. This rotation can change the volume between the cylinders. The engine is powered by the rotation between the pistons. The important component to achieve this rotation mode is the double eccentric gear, which is fixed on the stator, and one of its gears meshes with the oval gear on the output shaft, and the other gear meshes with the internal gear on the disc member, so that The two disc-shaped components can rotate around the output shaft at a differential speed, and the volume of the cylinder changes periodically when the output shaft rotates to form an engine that can run continuously. There are only two parts of the whole machine, the rotor and the stator, and the cylinder is composed of the space between the rotor and the stator, so the invention requires very few parts, and the space utilization of the parts is very high, which is very suitable for application in future small and light Quantify the means of transportation.

The obvious beneficial effect of the present invention is.

1. When the intake valve and the exhaust valve on the stator are exchanged each other, the engine can rotate in reverse, and the present invention is a two-way engine.

2. When the engine is running, the rotor rotates in one direction without eccentricity in the stator, so that the whole machine has no vibration.

3. The piston is fixed on the disc that rotates around the output shaft, so that the movement trajectory of the piston is a closed ring line. When the engine is running, the friction between the piston and the cylinder is almost zero, thereby improving the energy conversion efficiency.

4. Change the air valve mechanism to air holes, so that the whole machine has fewer parts and at the same time reduces its own volume and weight.

5. The piston adopts differential speed transposition rotation without reciprocating motion, which greatly increases the limit speed of the whole machine.

6. The present invention is different from the triangular rotor engine, and the cylinder shape of the engine is similar to that of a piston engine, which is helpful for gas combustion.

7. The annular combustion chamber is divided into 8 cylinders. The opposite two cylinders do work at the same time, so a single engine is equivalent to a 16-cylinder engine, making it small in size and high in power.

8. Because the rotor and stator of the engine are disc-type, when multiple rows are used, the power of the engine can be greatly improved. It can make a small device output a lot of power. Double-row rotors are equivalent to 32-cylinder engines, and three-row rotors are equivalent to 48-cylinder engines, which can be used in special environments such as military affairs.

9. Because of the unique movement of the piston, the engine changes the original spark plug to a glow plug, and the glow plug is always in a high-heat state, and it ignites immediately when the gas touches the plug. The gas does not touch the glow plug during the compression stroke in the cylinder, and only touches the glow plug when it reaches the highest pressure, so the engine is not easy to stall, and it only needs to be ignited once when starting.

10. The present invention has very few components, and the transmission system, combustion system, and cooling system are independent of each department, and the manufacturing precision is equivalent to that of a piston engine, so it is easy to manufacture and maintain

11. The present invention is an engine based on the four-stroke principle. When the intake valve and exhaust valve on the periphery of the annular cavity are changed from 2 pairs to 4 pairs, the engine is changed to a pump or a pneumatic device.

12. The invention is easy to start, and the differential transposition rotation of the piston and the uniform rotation of the output shaft can reverse each other, so the output shaft can be rotated directly when starting.

Four drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Figure 1 Appearance of the whole machine

Figure 2 Schematic diagram of the whole machine section

Figure 3 Schematic diagram of the gear ratio of the whole machine

Figure 4 cross-sectional schematic diagram of the whole machine

Figure 5 Engine stator structure diagram

Figure 6 Internal Structure Diagram of Engine Stator

Figure 7 engine rotor diagram

Fig. 8 Installation drawing of oval gear of drive train

Figure 9 Piston and disc member installation diagram

Figure 10 Structural diagram of the annular combustion chamber

Figure 11 Schematic diagram of cylinder seal

Figure 12 Four-stroke working principle diagram

Figure 13 Four-stroke work table

Figure 14 Schematic Diagram of Piston Differential Transposition Rotation

Figure 15 Piston differential transposition rotation principle table

In the figure 1. Output shaft 2. Bearing 3. Oval gear 4. Double eccentric gear 5. Disc member 6. Piston 7. Housing 8. Gear rack 9. Output shaft bolt 10. Output shaft thread 11. Output shaft keyway 12. Bearing holder 13. Oval gear keyway 14. Disc oil ring groove 15. Disc gas ring groove 16. Disc side wall gas ring groove 17. Disc side wall oil ring groove 18. Disc oil Ring 19. Disc gas ring 20. Disc side wall oil ring 21. Disc side wall gas ring 22. Rotor thrust ring 23. Disc internal gear 24. Cylinder gasket 25. Output shaft hole 26. Cylinder heater Hole 27. Heater head 28. Rotor thrust ring groove 29. Housing gear shaft hole 30. Gear frame bolt 31. Exhaust valve 32. Intake valve 33. Housing bolt

Five specific implementation methods

1. Various parts of the engine

Figure 1 is the installed style of the present invention. The whole machine is fixed by bolts on the upper and lower shells, and the rotor is enclosed inside. The shape of the engine is similar to a cylinder, and the upper and lower ends of the output shaft protrude from the upper and lower sides of the cylinder. A glow plug and intake and exhaust valves are arranged on a circle of side walls of the cylinder.

Figure 2 is a schematic cross-sectional view of the engine. It can be seen from the figure that the output shaft (1) is located at the central axis of the complete machine, and a bearing (2) is sleeved on the output shaft (1), and the bearing (2) is placed on the The central hole of the disc member (5) is sleeved on the output shaft, so that the two opposite disc members (5) can stably rotate around the output shaft. At both ends of the output shaft (1), there are two oval gears (3) arranged at an angle of 90 degrees. The oval gears are firmly fixed on the output shaft by the output shaft bolts (9) and cannot rotate around the output shaft. On both sides of the two elliptical gears (3), two double eccentric gears (4) are fixed on the housing (7) with gear racks (8) on each side, so that the two double eccentric gears (4) can It meshes with the oval gear (3) on the output shaft, and meshes with the disc internal gear (23) on the disc member (5). Therefore, the output shaft (1) can be rotated at a constant speed while the two disc members (5) can be rotated at a one-way differential speed. Four pistons (6) placed at intervals of 90 degrees are also arranged on the peripheral wall of each disc member (5). As shown in Figure 7, a complete rotor assembly is composed of an output shaft (1), a disc member (5), an oval gear (3), and 8 pistons (6). Two upper and lower shells (7) are placed opposite each other, and two double-connected eccentric gears (4) are fixed on each shell to form a stator, and the rotor is fixed inside the stator with shell bolts (33) to form a complete engine.

Figure 3 is a schematic diagram of the gear ratio of the engine. The ellipse in the center of the figure represents a single elliptical gear (3) fixed at one end of the output shaft, and the circle represented by a dotted line meshes with it. This circle is a double eccentric gear ( 4) on the eccentric gear (4a), the other gear (4b) on the double eccentric gear meshes with the disc inner gear (23) on the side of the disc member, and the two gears (4a) (4b) on it ) are perfect circles. If the two gears on the double eccentric gear take the center of the gear (4b) which is externally connected to the internal gear as the axis center, and the oval gear (3), double eccentric gear (4) and disc internal gear on the output shaft The gear ratio of (23) is set as 2: 1: 4, and the upper and lower two oval gears of the output shaft have a difference of 90 degrees, the upper and lower two sets of eccentric gear trains have a difference of 180 degrees, and the disc internal gears have a difference of 45 degrees. At this time, the output shaft rotates, and the motion of the two disks can replace the position, which is the differential transposition rotation.

Figure 4 is a schematic diagram of the cross-section of the whole machine. It can be seen from the figure that the cross-section of the stator of the engine is a circle, and the rotor is fixed at the center of the stator. The cross section of the rotor is also a circle, and 8 pistons are arranged around the circumference of the rotor, and every 4 pistons are fixed on a disc member at an interval of 90 degrees, so that the 8 pistons on the 2 disc members connect the rotor with the The space between the stators is divided into 8 independent spaces. Each space is a cylinder. The left and right sides of engine circumference are provided with 2 sets of valves, and each set of valves is provided with an exhaust valve (31), an intake valve (32), and the upper and lower sides of engine circumference are provided with 2 sets of glow plugs, each side one There are two sleeves, and the location of the glow plug is closer to the end of the exhaust valve, so that the ignition advance angle can be shortened to adapt to the movement of the piston when the cylinder expands, and the output power can be increased. When the whole machine is often operated in a high-speed environment, in order to ensure a longer ignition advance angle time, the position of the glow plug can be set in the middle of the valves on both sides, so that the ignition advance angle time of the forward and reverse rotation of the engine can also be adjusted. same.

Figures 5 and 6 are the structural diagrams of the stator. The stator is composed of upper and lower housings (7) opposed to each other and fixed with housing bolts (33). A cylinder gasket (24) is arranged between the two housings. All housings are provided with output shaft holes (25), and 2 glow plugs are fixed at 180 degrees on each casing circumference, so that each cylinder body of the complete machine is ignited by 2 glow plugs when doing work. To ensure sufficient combustion. The valve of the whole machine is composed of upper and lower shells. As shown in Figure 6, a rotor thrust ring groove (28) is provided on the inner side wall of the housing, and a gear frame (8) fixed with a gear frame bolt (30) is provided on the top side wall of the housing. 2 duplex eccentric gears (4) are fixed between the housing gear shaft holes (29) on the housing. Both housings are provided with an annular inner wall for combining into a cylinder, the inner wall cross-section is arc-shaped, and its length is 1/4 of the circumference of the piston. On the housing inner wall, a cylinder glow head hole (26) is also provided to contact with the red hot platinum wire on the glow head when the gas passes through the hole, so as to ignite the gas. Two sets of exhaust valves (31) and two sets of intake valves (32) are arranged at intervals of 180 degrees on the housing, and the valves are formed by assembling the upper and lower housings. The present invention does not need to design complicated valve mechanisms. In addition, the special feature of this engine is that when the positions of the intake valve (31) and the exhaust valve (32) are exchanged, and the position of the glow plug is in the middle of the valves on both sides, the four-stroke direction of the engine changes, and the output shaft can be reversed. to turn. That is, the engine is a two-way engine.

Figure 8 is an important component of the transmission system. In the center of the transmission system of the whole machine is the output shaft (1), and the output shaft (1) is provided with a bearing support (12), which is used to prevent the bearing (2) from sliding on the output shaft. role. An output shaft keyway (11) is also arranged on the output shaft, and an oval gear keyway (13) is arranged in the central hole of the oval gear. The two keyways match each other to fix the oval gear on the output shaft. At this time, the oval gear can drive the output shaft to rotate, and the output shaft can also drive the oval gear to rotate. In order to prevent the oval gear from sliding in the axial direction, the output shaft is also provided with an output shaft thread (10), and the oval gear is fixed with the output shaft bolt (9).

Can intuitively understand the outward appearance of disc member (5) as Fig. 9, and this member is that one end is a large circle, and one end is a small circle. When the rotor is combined, the two small round ends are butted. The transition between the large circle and the small circle on the disc member is a circular arc, and the length of this circular arc is 1/4 of the length of the piston circumference. The cylinder of the whole machine is formed by the combination of this arc and the arc of the inner wall of the housing. One end of the small circle of the disc member (5) is provided with a disc side wall gas ring groove (16) and a disc side wall oil ring groove (17), and the disc side wall gas ring (21) circle is respectively installed inside it. Pan side wall oil ring (20). A disc oil ring groove (14) and a disc gas ring groove (15) are arranged on the peripheral wall of the big circle, and a disc oil ring (18) and a disc gas ring (19) are respectively installed inside it. The central position of the disc is a hole that runs through the disc, and a bearing (2) is placed in the hole, and an internal gear is arranged at one end of the large circle, and the internal gear meshes with the double eccentric gear (4). Four pistons are fixed on the arc side wall of the outer circle of each disc member, and when the two disc members are opposed and combined, the trajectory of the movement of the eight pistons on the periphery is a closed circular line. For the single-rotor engine referred to above, when a multi-rotor arrangement is used, the output shaft is lengthened, the number of oval gears on the output shaft is increased, the number of opposing discs and pistons is increased, and the number of double-connected eccentric gears on the stator is increased , Arrange the shells combined into the stator in sections so that they are arranged side by side, and the model can be changed into a multi-rotor model. When a double rotor combination is used, 16 pistons are installed on the outer ring of the rotor composed of 4 disc members, and when a combination of three rotors is used, 24 pistons are installed on the outer ring of the rotor composed of 6 disc members. The double-row rotor is equivalent to a 32-cylinder engine, and the three-row rotor is equivalent to a 48-cylinder engine.

As shown in Figure 10, the disc member and the housing are combined to form an annular cavity, which is the cylinder block, and it is a continuous annular cylinder block. After the piston is installed on the disc member (5), 8 A piston divides the annular combustion chamber into 8 cylinders. As shown in Figure 11, it is the combined cylinder sealing system. Two disc members (5) are placed oppositely, and two sealing rings are arranged on the contact surface. The output shaft is a disc side wall oil ring (20), and its outer ring is a disc side wall gas ring (21), and the two sealing rings are shared by the upper and lower disc members (5). A disc oil ring (18) and a disc gas ring (19) are provided on the contact surface between the circumference of the disc member and the inner wall of the housing. In addition, in the rotor thrust ring groove (28) of each housing, A rotor thrust ring (22) is placed, its function is to prevent the displacement of the disc member (5) in the axial direction and cause air leakage, and a cylinder gasket (24) is also provided on the contact surface of the two housings combined ) to prevent cylinder leakage.

2. The working process of the engine

After the engine is assembled, the engine can be started by turning the output shaft. The rotation of the output shaft inside the whole machine and the movement between the pistons can be reversed. The air port is a simple hole without complicated valve settings. It is the movement process of the piston that realizes its normal air intake. The movement is a unidirectional rotation around the central axis, and the movement speed of the two sets of pistons is constantly changing and their positions are replaced. When one group of pistons moves slowly, the other group of pistons moves faster. At this time, the volume between the cylinders will change, and the decelerating piston can transmit the decelerating inertial force to the accelerating piston through the expansion of gas, thereby improving energy conversion. efficiency. When the piston is rotating, when the cylinder just passes the intake valve, if its volume becomes larger, it will inhale combustible gas. The combustible gas can be compression-ignited diesel, ignited gasoline, or other combustible gases such as hydrogen or coal gas. When the inhalation is over, the compression process of the combustible gas is followed immediately. The piston with a faster movement speed suddenly becomes slower, and the piston with a slower movement speed begins to accelerate and sweep the intake valve. At this time, the piston Close the cylinder. When compressed to the highest pressure, the displacement of the cylinder just passes the position of the hole of the glow plug, and if the glow plug is in a red hot state, the combustible gas can be ignited. It should be noted that the glow plug of the present invention does not need to be ignited, as long as it is in a high-heat state all the time, because the piston does not touch the glow plug when compressing the gas, so the problem of premature or too late ignition can be easily solved. Some heat-resistant and heat-accumulating platinum alloy materials can be considered as the material for the fuse head, and the principle is similar to that of a windproof lighter. When the gas is ignited and the gas expands, the engine outputs power. When the gas expansion is over, the movement of the piston, which was originally under force and doing work, changes from fast to slow, and it just sweeps over the position of the exhaust valve, exposing the exhaust valve. The slower one starts to accelerate again and pushes the burned exhaust gas out of the cylinder. At this time, a stroke is being made in each cylinder. After 4 strokes of a cylinder, the rotor rotates 180 degrees, the output shaft rotates 360 degrees, and the whole machine outputs power 4 times.

Figure 12 is the four-stroke principle diagram of the engine. It can be seen that in the entire annular combustion chamber, the eight pistons are divided into two groups A and B to move, and the movement method is a one-way differential transposition rotation method. It is the internal gear mechanism of the whole machine that realizes the transmission mode. As shown in Figure 3, the gears are divided into three types, namely oval gears, double eccentric gears, and disc internal gears. The gear ratio of these three types is 2:1: 4. In the embodiment, the rotor of the engine rotates once, and the output shaft rotates twice. Divide group A pistons into A1, A2, A3, A4, and group B pistons into B1, B2, B3, B4. As shown in Figure 13, when the output shaft rotates from 0 to 90 degrees, the pistons of group A move more, and the pistons of group B move less. The original position of the pistons of group B is replaced by the pistons of group A. Make the corresponding strokes occur in 8 spaces at the same time, that is, A1B2 exhaust, B2, A2 intake, A2, B3 compression, B3, A3 expansion, A3, B4 exhaust, B4, A4 intake, A4, B1 compression, B1, A1 expands. When the output shaft rotates from 90 degrees to 180 degrees, the displacement of the pistons of group A is small, and the displacement of pistons of group B is relatively large, and the original position of the pistons of group A is replaced by the pistons of group B. At this time, the total rotation angle of the output shaft is 180 degrees, the total rotation angle of the group A piston is 90 degrees, the total rotation angle of the B group piston is 90 degrees, the rotor rotates 90 degrees, and the engine outputs power twice. When the output shaft rotates 360 degrees, the rotor rotates 180 degrees, and the engine outputs power 4 times; when the output shaft rotates 720 degrees, the rotor rotates 360 degrees, the engine outputs power 8 times, and so on. In addition, when the engine outputs work each time, in the annular combustion chamber, the two opposite cylinders perform work at the same time, so it is equivalent to the rotor rotating for one revolution, the output shaft rotating for two revolutions, and the output power is 8 times, of which 16 cylinders expand , that is, the engine is equivalent to a 16-cylinder engine.

As shown in Figure 14 and Chart 15, when the output shaft rotates 180 degrees, the rotor rotates 90 degrees. The piston rotates in a one-way differential transposition. When the output shaft rotates from 0° to 90°, the group A pistons move relatively large, about 67°. The range of piston movement in Group B is relatively small, about 23 degrees. Now group A piston is approaching to group B piston, and occupied the position of original B group piston. When the output shaft rotates from 90 degrees to 180 degrees, the piston movement range of group A is relatively small, about 23 degrees, and the piston movement displacement of group B is very large, about 67 degrees. Now group B piston is away from A group piston, and A group piston has occupied the position of original B group piston again. This type of movement is one-way differential transposition rotation. At this time, the output shaft rotates 180 degrees, the pistons of group A rotate 90 degrees, and the pistons of group B rotate 90 degrees. That is to say, the rotor rotates 90 degrees. Therefore, the rotation speed of the output shaft of the engine is twice the rotation speed of the rotor, and the parts of the whole machine are less, and both sides of the piston are stroked, so that the space utilization rate of the present invention is very high, and it is more suitable for application in small high-speed equipment .

The above is the working process of a normal engine. At this time, two sets of glow plugs and two sets of intake and exhaust valves are arranged on the circumference of the engine casing. If a set of intake and exhaust valves are set at an interval of 90 degrees, then the present invention is no longer an internal combustion engine device, but a two-way pump or pneumatic device. The intake valve is responsible for intake air, the exhaust valve is responsible for exhaust, and the output shaft The input power can be used as a pump, and the output shaft can be used as a pneumatic or hydraulic device when outputting power.

Claims (9)

1. A two-way elliptical gear engine, the shape of the complete machine is cylindrical; inside it, an output shaft, a bearing, a disc member, a plurality of pistons, and an elliptical gear form a cylindrical rotor; Exhaust valves, multiple glow heads, gear racks, and multiple double-connected eccentric gears form the stator; the space between the rotor and the stator forms an annular combustion chamber, and multiple pistons rotate in the annular chamber and divide the combustion chamber into multiple Cylinder; the transmission system is composed of elliptical gear, double eccentric gear, and disc internal gear, so that the pistons can perform one-way differential transposition rotation, so that the volume between the cylinders changes, and 4 strokes are realized; increase the number of rotors to increase Engine power; change the intake and exhaust valves, change the rotation direction of the output shaft; when the glow plug is changed to the intake and exhaust valves, the two-way oval gear engine can be used as a pneumatic device. 2. The bidirectional elliptical gear engine according to claim 1, characterized in that: the rotor mechanism forming the engine comprises; an output shaft, two opposite disc members are sleeved at the center of the output shaft, and each circle Four pistons are fixed on the disc member at intervals of 90 degrees, and a bearing is installed between the disc member and the output shaft, so that the disc member can drive the piston to rotate at high speed on the output shaft; at the upper and lower ends of the output shaft and the Two elliptical gears placed at an angle of 90 degrees are installed on the outside, and the keyway of the center hole of the elliptical gear matches the keyway of the output shaft so that it cannot rotate around the output shaft. 3. The two-way elliptical gear engine according to claim 1, characterized in that: the stator mechanism forming the engine comprises: two upper and lower opposite shells fixed with bolts, each shell is fixed with a gear frame, a gear The frame is used to fix the two double-linked eccentric gears on the housing; on the circumference of the housing, there are also two sets of opposite 180-degree glow plugs, two sets of opposite 180-degree intake valves and exhaust valves; A rotor thrust ring is arranged inside the casing, and a gasket is arranged between the contact surfaces of the two casings. 4. The two-way oval gear engine according to claim 1, characterized in that: the drive train of the engine not only has the purpose of outputting power but also realizes the purpose of special movement between pistons, and its components include; an elliptical gear fixed on the output shaft It meshes with the eccentric teeth on the double eccentric gear, and the non-eccentric teeth on the double eccentric gear meshes with the internal gear on one side of the disc member, and the upper and lower sets of elliptical gears on the output shaft have a difference of 90 degrees, and the upper and lower sets of double The angle difference between the eccentric gear train is 180 degrees, and the angle difference between the disc internal gears is 45 degrees. The output shaft has two sets of upper and lower oval gears, two sets of upper and lower double eccentric gears, and the gear ratio of the disc internal gear is 2:1:4. The two groups of pistons in the combustion chamber exhibit one-way differential transposition rotation. 5. The two-way oval gear engine according to claim 1, characterized in that: the combustion system of the engine is an annular cavity, and its components include: two upper and lower opposite disc members, two upper and lower opposite shells body, the disc members are opposed and combined to form the semi-annular side wall of the annular cavity, and the upper and lower shells are opposed and combined, the inner wall of which forms the other half of the annular side wall of the annular cavity, and the above components are combined to form a complete annular cavity; The annular cavity is divided into 8 cylinders by 8 pistons fixed on the disc member; four kinds of sealing rings are used to seal the cylinder, which are the common sealing rings located on the opposite contact surfaces of the two disc members. The sealing ring on the contact surface between the disc member and the casing, the sealing gasket between the two casings, and the rotor thrust ring on the casing. 6. The two-way oval gear engine according to claim 1, characterized in that: the ignition system of the engine comprises; on the upper and lower shells, each shell is opposite to each other by 180 degrees, and two glow plugs are installed; The work is not the way of ignition, but the way of continuous high heat. Its material is heat-resistant metal with thermal delay effect; when starting the engine, it only needs one-time ignition or continuous power supply. The special movement of the cylinder makes the gas compressed without contact When the gas is compressed, the two plugs in the plug holes of the upper and lower shells are ignited simultaneously, so as to ensure sufficient combustion. 7. The two-way oval gear engine according to claim 1, characterized in that: the ventilation system of the engine has no valve mechanism, and its components include; grooves are arranged at the contact surfaces of the upper and lower casings of the engine. , the valve of the engine is formed by the combination of two shells facing each other, and the two grooves are joined together to form two hole-shaped holes, which are the valves; the engine is provided with two sets of valves at 180-degree opposite positions on the circumference of the shell. , each set of valves includes intake valves and exhaust valves, and the distance between the valves is slightly equal to the thickness of a single piston; when the engine is running, the intake valves and exhaust valves on both sides do not need to be closed or opened. The special movement makes it use natural suction and exhaust for ventilation. 8. The two-way oval gear engine according to claim 1, characterized in that: when using 4 disc members and 16 pistons to form a rotor, the model is a dual-rotor engine; when using 6 disc members and 16 pistons When 24 pistons are combined into a rotor, this model is a three-rotor engine; the double-rotor model is equivalent to 32 cylinders, and the three-rotor model is equivalent to 48 cylinders. 9. The two-way elliptical gear engine according to claim 1, characterized in that: when the two-way elliptical gear engine is used as pneumatic equipment, its components include; two sets of glow plugs are arranged on the casing circumference of the engine, two sets Intake and exhaust valves, such as changing two sets of glow plugs to two sets of intake and exhaust valves, so that a set of intake and exhaust valves are set every 90 degrees on the circumference of the engine. At this time, the engine is a two-way pneumatic device. The valve is responsible for air intake, the exhaust valve is responsible for exhaust, the input power of the output shaft can be used as a pump, and the output power of the output shaft can be used as a pneumatic device.

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