Sealing and lubricating system of rotor engine

Abstract

The utility model relates to the technical field of engines, provides a sealing and lubricating system of a rotor engine, and aims at solving the problems that a traditional rotor engine is poor in sealing performance, low in lubricating efficiency, serious in abrasion and the like. The system comprises a radial sealing system, an end face air sealing system and an end face oil sealing system, sliding friction is replaced with rolling friction, friction resistance and abrasion are reduced, meanwhile, a lubricating oil supply channel is optimized, and the lubricating effect is improved. The radial sealing system adopts a radial sealing roller and an elastic supporting structure, the end face sealing system achieves airtight isolation through an end face sealing roller, and the end face oil sealing system forms oil sealing isolation through an end face sealing rotating ring rotating at a high speed. The cylinder body adopts a double-layer structure, and a cooling liquid interlayer is arranged in the middle to enhance the heat dissipation effect; the cylinder body and the end sealing plate are assembled through the concave-convex matching connector and the sealing ring, and the airtight performance, the watertight performance and the structural strength between the cylinder body and the end sealing plate are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of engine, concretely relates to a sealing and lubricating system of rotor engine. BACKGROUND

[0002] Compared with the traditional reciprocating piston engine, the rotor engine has the advantages of simple structure, high thrust-to-weight ratio, light weight, small displacement and high power, high speed and power-to-volume ratio, and is gradually popularized and applied.

[0003] Because the rotor radial sealing strip and the end face sealing strip are mostly sliding friction, the wear is serious under high-speed operation, which leads to the decline of sealing performance, and at the same time, the scratches on the cylinder body and the head plate (including the connecting plate) form the ghost claw phenomenon, which shortens the engine maintenance cycle and also affects the service life of the engine. In addition, because the sealing strip and the inner wall of the cylinder body are not perpendicular to the inner wall of the cylinder body in most cases, there is a certain angle, and theoretically, there is also a clamping phenomenon, which greatly affects the start of the engine, and even causes the engine to be dead. The existing technology of the rotor engine is to directly inject lubricating oil into the cylinder body, which has low effective lubrication utilization rate, and also causes the phenomenon of burning engine oil, greatly increases the consumption of engine oil, and also causes another factor of not meeting the emission standard. Because the ignition point of the lubricating oil is lower than that of the fuel, it also causes low fuel mixed explosion efficiency and reduces the overall power. Therefore, the lubricating system of the rotor engine needs to be improved. The rotor engine cylinder and the head plate (equivalent to the lateral cylinder cover) are mostly flatly connected, which is easy to cause misalignment and affect the working state of the internal rotor. Light knocking cylinder operation is not normal, and serious damage to the engine will occur. The rotor engine cylinder and the head plate are mostly sealed by flat gaskets, and the effective sealing area is smallest at the through bolt position, which is the weakest link. The sealing gasket is easy to be cracked by the high-pressure gas in the cylinder, causing air leakage and reducing the output power, and also affecting the reliable operation of the engine. UTILITY MODEL CONTENTS

[0004] In order to solve the problems in the background art, the utility model provides a sealing and lubricating system of rotor engine, which comprises at least one cylinder body, a rotor installed in the cylinder body, and a head plate on both sides of the cylinder body, characterized in that the rotor is provided with a radial sealing system, an end face gas sealing system, an end face oil sealing system and a sealing piece lubricating system.

[0005] The radial sealing system is arranged in the radial sealing piece installation groove at the junction of the two rotor working surfaces, and comprises:

[0006] The radial sealing roller is a rolling part, the radial sealing bearing cage is an elastic support structure, the upper part is provided with a drag-reducing roller and is tangent to the radial sealing roller, the elastic support force generated by the radial sealing bearing cage is transmitted to the radial sealing roller through the drag-reducing roller to apply a thrust force to the radial sealing roller, so that the radial sealing roller is tightly rolled with the inner wall of the cylinder and absorbs vibration energy, and the sealing and isolation of the rotor and the cylinder in the radial airtight part between working surfaces are completed.

[0007] A plurality of radial oil guide holes are arranged on the radial sealing member mounting groove and are communicated with the common oil passage of the rotor to provide lubrication and cooling for the moving parts of the radial sealing system.

[0008] In the preferred scheme, the radial sealing roller is a cylindrical rolling part, and end portion spring cages and rolling sealing balls are arranged in the two ends.

[0009] In the preferred scheme, the end face sealing ball track groove is internally provided with a spherical surface structure and is used in cooperation with the rolling sealing ball, and a track groove oil supply hole is arranged in the groove.

[0010] The rolling sealing ball maintains the contact pressure with the end face sealing ball track groove arranged on the end plate through the elastic pre-expansion force, so that the end portion of the radial sealing roller maintains sealing and lubrication in the rolling movement and absorbs the axial vibration energy of the radial sealing roller.

[0011] In the preferred scheme, the end face of the rotor is provided with an end face air sealing system, including an end face sealing roller, an end face sealing bearing cage and an end portion drag-reducing roller.

[0012] The end face sealing roller rolls in the end face air sealing member mounting groove, and end portion spring cages and end portion sealing top beads are arranged in the two ends.

[0013] The end face sealing bearing cage is an elastic support structure, and the end portion drag-reducing roller is arranged in the end face sealing bearing cage, the end portion drag-reducing roller is tangent to the end face sealing roller, the elastic support force of the end face sealing bearing cage is transmitted to the end face sealing roller through the end portion drag-reducing roller, and the end face sealing roller is tightly contacted with the end face of the end plate, so that the sealing and isolation of the end face air sealing part between working surfaces are realized in the rotation of the rotor.

[0014] A plurality of end face oil guide holes are arranged in the end face air sealing member mounting groove and are communicated with the common oil passage of the rotor to provide lubrication and cooling for the moving parts of the end face air sealing system.

[0015] In the preferred scheme, the end face of the rotor is provided with an end face oil sealing system, including a rotor end face oil sealing groove, an end face sealing rotating ring and a circular ring bearing cage; the end face sealing rotating ring and the circular ring bearing cage are arranged in the rotor end face oil sealing groove.

[0016] The end face sealing ring upper part is provided with at least one end face sealing ring upper groove.

[0017] The circular ring bearing cage is a flexible closed loop structure, and is provided with an end face oil seal ball and is matched with the end face sealing ring in the rotor end face oil seal groove to realize the high-speed rotation in the sealed state.

[0018] In the preferred scheme, the rotor end face oil seal groove is provided with an oil seal groove lower groove and an oil seal groove oil guide hole at the bottom; the oil seal groove oil guide hole is communicated with the rotor oil common channel;

[0019] The end face sealing ring is provided with a plurality of ring oil guide holes in the end face sealing ring upper groove and is communicated up and down, and the lower part is provided with an end face sealing ring lower groove.

[0020] The circular ring bearing cage is a wave-shaped flexible closed loop structure, and is provided with an end face oil seal ball at intervals up and down, and the end face oil seal ball is matched with the end face sealing ring to limit the rotation; the circular ring bearing cage is matched with the end face sealing ring lower groove through the end face oil seal ball to form a limited rotation structure.

[0021] One way of the lubricating oil is that the rotor oil common channel enters the end face oil seal system through the oil seal groove oil guide hole to lubricate; the other way is that the lubricating oil is supplied to the sealing ring upper groove of the common area of the rotor and the stator through the end face oil supply hole of the head plate, is transmitted to the circular ring bearing cage through the ring oil guide hole, and the self-lubrication of the oil seal system is completed; under the double action of oil pressure and centrifugal force, the oil seal groove oil guide hole enters the rotor oil common channel to supply oil to other lubricating systems.

[0022] In the preferred scheme, the cylinder body comprises a cylinder body inner shell and a cylinder body outer shell, and forms a double-layer structure with a cooling liquid interlayer in the middle;

[0023] The head plate comprises a head plate outer shell and a head plate inner shell, and forms a double-layer structure with a head plate cooling liquid interlayer in the middle, and forms a mutual inlaying structure corresponding to the structure position of the cylinder body;

[0024] The link plates and the link plate outer water-tight interfaces are further arranged between two or more cylinder bodies;

[0025] The concave-convex matching of the cylinder body and the head plate or the link plate is that the material with a large thermal expansion coefficient is designed as a convex type, and the material with a small thermal expansion coefficient is designed as a concave type; the cylinder body with the same material is designed as a convex type interface.

[0026] In the preferred scheme, the head plate inner side is provided with a head plate end face; the head plate end face is provided with a head plate end face oil supply hole, and the oil is supplied to the rotor end face oil seal system through the oil pump;

[0027] The connecting plate is provided between the plurality of cylinder blocks, and connecting plate surfaces are arranged on both sides of the connecting plate.

[0028] In the preferred scheme, the cylinder block is provided with an air inlet channel and an air outlet channel, which are respectively connected to the air inlet chamber and the working chamber.

[0029] An oil injection nozzle is arranged in the air inlet chamber, and a spark plug is arranged in the compression chamber.

[0030] The cylinder block is externally connected to a bolt interface, and is connected to a head plate through a shell connecting bolt group.

[0031] The utility model discloses the beneficial effects reached are as follows:

[0032] The utility model changes the sliding friction of rotor radial seal strip and end face seal strip into rolling friction, improves the lubricating oil accurate supply channel, makes the sealing element lubricating system oil supply more reasonable, not only reduces the friction resistance, but also reduces the wear and tear between sealing element and cylinder block and head plate, reduces the common fault of rotor engine combustion oil and waste oil, greatly reduces the claw phenomenon of cylinder block and head plate / connecting plate friction surface, improves the service life of sealing system, since the lubricating oil channel is arranged in the rotor body, also improves the overall rotor heat dissipation effect, more mainly, greatly improves the working stability and effective life of rotor engine;

[0033] In order to avoid the fatal defect that the long bolt through body connection causes the misalignment phenomenon between the engine cylinder block and the head plate or the connecting plate, convex and concave matching air-tight interfaces and water-tight interfaces are arranged at the air-tight and water-tight interface positions of the cylinder block and the head plate or the connecting plate, the sealing performance is improved through the arrangement of the built-in sealing ring, and after the assembly of the structure, not only the position is accurate and misalignment phenomenon does not occur, but also the structural strength at the interface is improved;

[0034] The radial sealing system and the end face sealing system are changed from the current sliding friction to rolling friction, and the elastic bearing retainer is arranged on the moving parts, which not only makes the sealing member close to the inner wall of the cylinder and the end face of the head plate or the connecting plate, but also absorbs part of the vibration energy generated during operation, so that the normal wear is automatically compensated, and the wear gap and the gap caused by the change of local centrifugal force are automatically compensated; because the special oil supply channel is arranged on each moving part, the redundant multi-channel design is adopted, so that the running parts, especially the radial sealing system and the end face sealing system, are well lubricated, cooled and other technical indicators are improved, and the tension of the lubricating oil film makes the sealing performance better, and the working stability and service life of the engine are greatly improved; the interface between the cylinder and the head plate / connecting plate adopts the concave-convex inlay structure, which not only improves the air and water tightness of the shell, but also enables the shells to be accurately positioned with each other, eliminates the misalignment caused by vibration, and also strengthens the structural strength of the interface, especially for the wide cylinder structure of the rotor engine, the pressure resistance strength is significantly improved; this comprehensive design has high application value in the fields of automobiles, ships, aircrafts and the like. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 Positioning diagram of the radial sealing system and the end face sealing system of the rotor;

[0036] Figure 2 Large-scale diagram of the installation base of the rotor sealing system and the lubricating oil passage

[0037] Figure 3 Main component diagram of the radial sealing system and the end face sealing system of the rotor;

[0038] Figure 4 Main component assembly diagram of the rotor engine;

[0039] Figure 5 Large-scale diagram of the cylinder structure;

[0040] Figure 6 Large-scale diagram of the head plate structure;

[0041] Figure 7 Large-scale diagram of the connecting plate structure;

[0042] Figure 8 Large-scale diagram of the cylinder and the connecting plate assembly structure.

[0043] Reference numerals in the drawings:

[0044] 1. Rotor;

[0045] 1-1, rotor working surface; 1-2, combustion chamber; 1-3, radial seal system; 1-3-1, radial seal installation groove; 1-3-2, radial seal roller; 1-3-3, radial seal bearing retainer; 1-3-4, spring retainer; 1-3-5, rolling seal ball; 1-3-6, drag reduction roller; 1-3-7, radial oil guide hole; 1-4, end face air seal system; 1-4-1, end face air seal installation groove; 1-4-2, end face seal roller; 1-4-3, end face seal bearing retainer; 1-4-4, end spring retainer; 1-4-5, end seal top bead; 1-4-6, end drag reduction roller; 1-4-7, end face oil guide hole; 1-5, end face oil seal system; 1-5-1, rotor end face oil seal groove; 1-5-1-1, oil seal groove lower groove; 1-5-1-2, oil seal groove oil guide hole; 1-5-1-3, rotor oil common passage; 1-5-2, end face seal bushing; 1-5-2-1, end face seal ring upper groove; 1-5-2-2, end face seal ring oil guide hole; 1-5-2-3, end face seal ring lower groove; 1-5-3, circular ring bearing retainer; 1-5-4, end face oil seal ball; 1-11, stator; 1-12, crankshaft;

[0046] 2, cylinder block;

[0047] 2-1, cylinder block inner shell; 2-2, cylinder block outer shell; 2-3, intake port; 2-4, exhaust port; 2-5, fuel injector; 2-6, spark plug; 2-7, coolant jacket; 2-10, cylinder block outer joint bolt interface; 2-11, cylinder block outer joint structure air tight interface; 2-12, cylinder block air tight seal ring; 2-13, cylinder block outer joint water tight interface; 2-14, cylinder block outer joint structure water tight seal ring; 2-16, intake chamber; 2-17, compression chamber; 2-18, power chamber;

[0048] 3, head plate;

[0049] 3-1, head plate outer shell; 3-2, head plate end face; 3-3, head plate end face friction face; 3-7, stator installation bolt; 3-9, head plate outer joint air tight interface; 3-10, head plate outer joint water tight interface; 3-11, head plate outer joint bolt interface; 3-14, trajectory groove oil supply hole; 3-15, head plate coolant jacket; 3-17, end face seal ball trajectory groove; 3-20, head plate end face oil supply hole;

[0050] 4, adapter plate;

[0051] 4-1, adapter plate outer shell; 4-2, adapter plate inner shell; 4-3, adapter plate friction surface; 4-6, adapter plate outer connection gas-tight interface; 4-7, adapter plate outer connection water-tight interface; 4-8, adapter plate outer connection bolt interface; 4-11, cooling liquid interlayer; 4-15, adapter plate end face oil supply hole; 4-16, adapter plate end face sealing ball trajectory groove; 4-17, adapter plate end face groove oil supply hole;

[0052] 5, shell connecting bolt set. DETAILED DESCRIPTION

[0053] The technical solutions in the utility model will be described clearly and completely below with reference to the drawings in the utility model, and additionally, the forms of each structure described in the following embodiments are only examples, and the utility model is not limited to each structure described in the following embodiments, and all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0054] Referring to Figure 1 Figure 8 The specific structure of the sealing and lubricating system of the rotor engine is as follows: it comprises at least one cylinder body 2, a rotor 1 installed in the cylinder body 2, and a head plate 3 on the two sides of the cylinder body 2, and is characterized in that the rotor 1 is provided with a radial sealing system 1-3, an end face gas sealing system 1-4, an end face oil sealing system 1-5, and a sealing member lubricating system.

[0055] The radial sealing system 1-3 is arranged in a radial sealing member installation groove 1-3-1 at the junction of the two rotor working surfaces 1-1 and comprises:

[0056] The radial sealing roller 1-3-2 is a rolling part, the radial sealing bearing retainer 1-3-3 is an elastic support structure, the upper part is provided with the resistance-reducing roller 1-3-6 and is tangent to the radial sealing roller 1-3-2, and the elastic support force generated by the radial sealing bearing retainer 1-3-3 is applied to the radial sealing roller 1-3-2 through the resistance-reducing roller 1-3-6, so that the radial sealing roller 1-3-2 is tightly rolled with the inner wall of the cylinder body 2 and absorbs the vibration energy, and the sealing and isolation of the rotor 1 and the cylinder body 2 in the radial gas-tight part between the working surfaces are completed.

[0057] A plurality of radial oil guide holes 1-3-7 are arranged on the radial sealing member installation groove 1-3-1 and are in communication with the rotor oil common channel 1-5-1-3, so as to provide lubrication and cooling for the moving parts of the radial sealing system 1-3.

[0058] ​The radial sealing roller 1-3-2 is a cylindrical rolling part, and the end spring retainer 1-4-4 and the rolling sealing ball 1-3-5 are arranged in the two ends.

[0059] The end face sealing ball track groove 3-17 is arranged in the head plate 3, and the inside of the end face sealing ball track groove 3-17 is a spherical structure, which is matched with the rolling sealing ball 1-3-5, and the track groove oil supply hole 3-14 is arranged in the groove.

[0060] The rolling sealing ball 1-3-5 maintains the contact pressure with the end face sealing ball track groove 3-17 arranged in the head plate 3 through the elastic pre-expansion force, so that the end part of the radial sealing roller 1-3-2 maintains sealing and lubrication in the rolling movement, and the axial vibration energy of the radial sealing roller 1-3-2 is absorbed.

[0061] The rotor end face is provided with an end face gas sealing system 1-4, which comprises an end face sealing roller 1-4-2, an end face sealing bearing retainer 1-4-3 and an end part resistance reducing roller 1-4-6.

[0062] The end face sealing roller 1-4-2 rolls in the end face gas sealing installation groove 1-4-1, and the end part spring retainer 1-4-4 and the end part sealing top bead 1-4-5 are arranged at the two ends.

[0063] The end face sealing bearing retainer 1-4-3 is an elastic support structure, and the end part resistance reducing roller 1-4-6 is installed in the end face sealing bearing retainer 1-4-3, the end part resistance reducing roller 1-4-6 is tangent to the end face sealing roller 1-4-2, the elastic support force of the end face sealing bearing retainer 1-4-3 is transmitted to the end face sealing roller 1-4-2 through the end part resistance reducing roller 1-4-6, and the end face sealing bearing retainer 1-4-3 is in close contact with the end face 3-2 of the head plate, so that the sealing and isolation of the end face gas sealing part between the working surfaces are realized in the rotation of the rotor 1.

[0064] A plurality of end face oil guide holes 1-4-7 are arranged in the end face gas sealing installation groove 1-4-1, and the end face oil guide holes 1-4-7 are communicated with the rotor oil common channel 1-5-1-3, so as to provide lubrication and cooling for the moving parts of the end face gas sealing system 1-4.

[0065] The rotor end face is provided with an end face oil sealing system 1-5, which comprises a rotor end face oil sealing groove 1-5-1, an end face sealing rotating ring 1-5-2 and a circular ring bearing retainer 1-5-3; the end face sealing rotating ring 1-5-2 and the circular ring bearing retainer 1-5-3 are installed in the rotor end face oil sealing groove 1-5-1.

[0066] The end face sealing rotating ring 1-5-2 is provided with at least one end face sealing ring upper groove 1-5-2-1 in the upper part.

[0067] The circular ring bearing cage 1-5-3 is a flexible closed loop structure, and is provided with an end face oil seal ball 1-5-4, which is matched with the end face sealing ring 1-5-2 in the rotor end face oil seal groove 1-5-1 to realize the sealing state of high-speed rotation.

[0068] The rotor end face oil seal groove 1-5-1 is provided with an oil seal groove lower groove 1-5-1-1 and an oil seal groove oil guide hole 1-5-1-2 at the bottom; the oil seal groove oil guide hole 1-5-1-2 is communicated with the rotor oil common channel 1-5-1-3;

[0069] The end face sealing ring 1-5-2 is provided with a plurality of ring oil guide holes in the end face sealing ring upper groove 1-5-2-1 and is communicated from top to bottom, and is provided with an end face sealing ring lower groove 1-5-2-3 at the lower part;

[0070] The circular ring bearing cage 1-5-3 is a wave-shaped flexible closed loop structure, and is provided with an end face oil seal ball 1-5-4 at intervals from top to bottom, and the end face oil seal ball 1-5-4 is matched with the end face sealing ring 1-5-2 to limit rotation; the circular ring bearing cage 1-5-3 is matched with the end face sealing ring lower groove 1-5-2-3 through the end face oil seal ball 1-5-4 to form a limited rotation structure.

[0071] One way of lubricating oil is that the rotor oil common channel 1-5-1-3 enters the end face oil seal system 1-5 through the oil seal groove oil guide hole 1-5-1-2 to lubricate; the other way is that the end face oil supply hole 3-20 of the head plate supplies lubricating oil to the sealing ring upper groove of the common area of the rotor 1 and the stator 1-11, and the oil is transmitted to the circular ring bearing cage 1-5-3 through the ring oil guide hole to complete the self-lubrication of the oil seal system; under the double action of oil pressure and centrifugal force, the oil enters the rotor oil common channel 1-5-1-3 through the oil seal groove oil guide hole 1-5-1-2 to supply oil to other lubricating systems.

[0072] The cylinder body 2 comprises a cylinder body inner shell 2-1 and a cylinder body outer shell 2-2, which form a double-layer structure, and the middle part is a cooling liquid interlayer 4-11;

[0073] The head plate 3 comprises a head plate outer shell 3-1 and a head plate inner shell, which form a double-layer structure, and the middle part is a head plate cooling liquid interlayer 3-15, and the structure position corresponds to the structure position of the cylinder body 2 to form a mutual inlaying matching structure;

[0074] The two or more cylinder bodies 2 are also provided with a link plate 4 and a link plate outer water-tight joint 4-7;

[0075] The concave-convex matching of the cylinder body 2 and the head plate 3 or the link plate 4 is that the material with a large thermal expansion coefficient is designed as a convex type, and the material with a small thermal expansion coefficient is designed as a concave type; the same material cylinder body 2 is designed as a convex type interface.

[0076] The inside of the head plate 3 is provided with a head plate end face 3-2; the head plate end face 3-2 is provided with a head plate end face oil supply hole 3-20, and the oil supply hole is used to supply oil to the rotor end face oil seal system 1-5 through the oil pump;

[0077] The interface plate 4 is provided between the multiple cylinder blocks 2, and the interface plate 4 is provided with an interface plate 4 face on both sides of the interface plate 4; the interface plate 4 is provided with an interface plate end face oil supply hole 4-15 on both sides of the interface plate 4, and the oil supply hole is used to supply oil to the rotor end face oil seal system 1-5 through the oil pump.

[0078] The cylinder block 2 is provided with an intake passage 2-3 and an exhaust passage 2-4, which are respectively connected to an intake chamber 2-16 and a working chamber 2-18;

[0079] The intake chamber 2-16 is provided with an oil nozzle 2-5; and the compression chamber 2-17 is provided with a spark plug 2-6;

[0080] The cylinder block is externally connected to a bolt interface 2-10, and the bolt interface 2-10 is connected to the head plate 3 through a shell connecting bolt group 5.

[0081] The working method of the sealing and lubricating system of the rotor engine: the head plate end face oil supply hole 3-20 provided on the head plate 3 or the interface plate end face oil supply hole 4-15 provided on the interface plate 4 is used to pressurize and spray oil to the recess 1-5-2-1 on the end face sealing ring of the tangent line between the rotor 1 inner ring gear and the stator 1-11 gear through the oil pump, and then the oil is flowed into the lower recess 1-5-2-3 and the circular ring bearing retainer 1-5-3 in the end face sealing ring through the end face sealing ring oil guide hole 1-5-2-2, and the oil is transmitted to the moving end face oil seal ball 1-5-4, so as to realize the self-lubrication of the end face oil seal system 1-5;

[0082] The lubricating oil passing through the end face sealing ring 1-5-2 is randomly flowed into the oil seal groove lower recess 1-5-1-1 at the bottom of the rotor end face oil seal groove 1-5-1, and then the oil is flowed into the rotor oil common channel 1-5-1-3 through the oil seal groove oil guide hole 1-5-1-2;

[0083] The lubricating oil is flowed into the end face air-tight member installation groove 1-4-1 and the end face sealing bearing retainer 1-4-3 through the end face oil guide hole 1-4-7, and then the oil is transmitted to the surface of the moving end face sealing roller 1-4-2, so as to complete the lubrication and cooling of the moving parts of the end face air-tight sealing system 1-4;

[0084] Another route of lubricating oil enters the radial seal installation groove 1-3-1 through the radial oil guide hole 1-3-7, is then transmitted to the surface of the moving drag-reducing roller 1-3-6 through the radial seal bearing retainer 1-3-3, is then transmitted to the radial seal roller 1-3-2 by the drag-reducing roller 1-3-6, and another route enters the end face seal ball track groove 3-17 through the track groove lubricating oil supply hole to transmit oil supply lubrication to the end rolling seal ball 1-3-5 and the built-in spring retainer 1-3-4, thereby completing the lubrication and cooling of the moving parts of the radial seal system 1-3.

[0085] The following is a detailed description of the designated reference signs and the composition and connection relationship of the structure:

[0086] The rotor 1 is the main power component of the engine, equivalent to the piston of the reciprocating piston engine.

[0087] The radial seal system 1-3 includes a radial seal installation groove 1-3-1 located at the junction of two adjacent working surfaces of the rotor 1 for installing components of the radial seal system 1-3.

[0088] The radial seal roller 1-3-2 rolls in the radial seal bearing retainer 1-3-3 to reduce friction and form a seal with the inner wall of the cylinder body 2.

[0089] The radial seal bearing retainer 1-3-3 supports the stable operation of the radial seal roller 1-3-2 and has a resilient structure to absorb vibration energy during operation.

[0090] The spring retainer 1-3-4 and the rolling seal ball 1-3-5 are arranged at both ends of the radial seal roller 1-3-2 to form a rolling friction structure, reduce friction resistance, reduce wear, improve the service life of the seal, absorb vibration energy, and enhance the sealing effect.

[0091] The drag-reducing roller 1-3-6 is tangent to the radial seal roller 1-3-2, further reduces friction resistance, delivers lubricating oil to the radial seal roller 1-3-2, transmits pressure to the radial seal roller 1-3-2, and guarantees the sealing performance.

[0092] The radial oil guide hole 1-3-7 is connected to the lubricating oil channel to provide lubricating oil for the radial seal system 1-3.

[0093] The end face air seal system 1-4 includes an end face air seal installation groove 1-4-1 for installing the end face seal roller 1-4-2 and providing a lubricating oil path.

[0094] The end face seal roller 1-4-2 rolls in the end face air seal installation groove 1-4-1 to form an air-tight isolation.

[0095] End face seal bearing retainer 1-4-3: support the stable operation of end face seal roller 1-4-2, with elastic structure, absorb the vibration energy of end face seal roller 1-4-2.

[0096] End spring retainer 1-4-4 and end sealing top bead 1-4-5: set at both ends of end face seal roller 1-4-2, enhance the sealing effect.

[0097] End resistance reduction roller 1-4-6: tangent to end face seal roller 1-4-2, reduce friction resistance, and transport lubricating oil.

[0098] End face oil guide hole 1-4-7: connected with lubricating oil channel, provides lubricating oil for end face gas seal system 1-4.

[0099] End face oil seal system 1-5, including

[0100] Rotor end face oil seal groove 1-5-1: located at the end face of the rotor, used for installing end face seal ring 1-5-2.

[0101] Oil seal groove lower groove 1-5-1-1: limit the movement of the ball.

[0102] Oil seal groove oil guide hole 1-5-1-2: connected with lubricating oil channel, provides lubricating oil for end face oil seal system 1-5.

[0103] Rotor oil common channel 1-5-1-3: connects each lubricating oil channel, ensures uniform distribution of lubricating oil.

[0104] End face seal ring 1-5-2: rotates with the rotor 1 at high speed, forms oil seal isolation between the rotor end face and the head plate 3 / adapter plate 4.

[0105] End face seal ring upper groove 1-5-2-1: as airtight, oil seal isolation groove.

[0106] End face seal ring oil guide hole 1-5-2-2: realizes the transmission of lubricating oil.

[0107] End face seal ring lower groove 1-5-2-3: cooperates with circular ring bearing retainer 1-5-3 to form central limit rotation.

[0108] Circular ring bearing retainer 1-5-3: support the stable operation of end face seal ring 1-5-2, with elastic wave-shaped closed loop structure.

[0109] End face oil seal ball 1-5-4: reduce the friction resistance of supporting end face seal ring 1-5-2 operation.

[0110] Cylinder 2;

[0111] Cylinder inner shell 2-1 and cylinder outer shell 2-2: Main structure of the cylinder 2, cylinder inner shell 2-1 works with the rotor 1 to complete all strokes of the engine.

[0112] Intake port 2-3: Introduce fresh air to mix with fuel.

[0113] Exhaust port 2-4: Discharge the exhaust gas after combustion.

[0114] Fuel injector 2-5: Inject fuel into the combustion chamber 1-2.

[0115] Spark plug 2-6: Ignite the mixture.

[0116] Coolant jacket 4-11: Contains coolant to cool the cylinder 2.

[0117] Cylinder outer bolted interface 2-10: Connects the shell connection bolt set 5 with the head plate 3, and can also be used for engine assembly and connection with other components.

[0118] Cylinder outer structural gas-tight interface 2-11 and cylinder outer structural water-tight interface 2-13: Connect with the head plate 3 or the adapter plate 4 to ensure gas and water tightness.

[0119] Cylinder gas-tight seal 2-12 and water-tight seal: Enhance the sealing of the connection.

[0120] Intake chamber 2-16, compression chamber 2-17, and power chamber 2-18: Complete the intake, compression, and power processes, respectively.

[0121] Head plate 3;

[0122] Head plate outer shell 3-1 and end face: Main structure of the head plate 3.

[0123] Head plate end face friction surface 3-3: Contact with the seal of the rotor 1.

[0124] Stator 1-11 mounting groove and mounting bolt hole: Used for mounting the stator 1-11 gear.

[0125] Crankshaft 1-12 through hole: Allows the crankshaft 1-12 to pass through.

[0126] Head plate outer gas-tight interface 3-9 and water-tight interface: Connect with the corresponding interfaces of the cylinder 2 to ensure sealing.

[0127] Head plate outer bolted interface 3-11: Used for engine assembly and connection with other components.

[0128] Coolant jacket 4-11: Contains coolant and performs heat exchange and circulation cooling.

[0129] Head plate end face oil supply hole 3-20: Provides lubricating oil for the end face sealing system.

[0130] Adapter plate 4

[0131] Adapter plate housing 4-1 and end face: Main structure of adapter plate 4.

[0132] Adapter plate friction face 4-3: Contact with rotor 1 seal.

[0133] Adapter plate external gas-tight interface 4-6 and adapter plate external water-tight interface 4-7: Corresponding interface connection with cylinder 2, ensuring sealing.

[0134] Adapter plate external bolt interface 4-8: Used for connection with cylinder 2 and other components.

[0135] Adapter plate 4 mounting bracket: Used for load bearing and support of cylinder 2.

[0136] Coolant sandwich 4-11: Contains and circulates coolant.

[0137] Adapter plate end face oil supply hole 4-15: Provides lubricating oil for rotor end face seal system.

[0138] Housing connection bolt set 5: Mainly used for assembly of rotor engine.

[0139] Rolling seal structure, including radial seal roller 1-3-2: Installed in radial seal installation groove 1-3-1 at the junction of rotor working surface 1-1, and rolling contact with the inner wall of cylinder 2 is achieved through spring retainer 1-3-4 and rolling seal ball 1-3-5.

[0140] End face seal roller 1-4-2: Located at the rotor end face, rolling in end face air-tightness installation groove 1-4-1, and dynamic seal is formed with end face friction face 3-3 through end seal top bead 1-4-5.

[0141] Resistance reduction roller 1-3-6, end resistance reduction roller: Installed on radial seal bearing retainer 1-3-3 and end face seal bearing retainer 1-4-3, tangent to the main seal roller, and thrust is applied through the elastic support structure to ensure that the seal roller always adheres to the contact surface while absorbing vibration energy.

[0142] Rolling friction design significantly reduces the friction resistance of traditional sliding seals and reduces wear. Spring retainer 1-3-4 and elastic bearing retainer provide adaptive pressure to compensate for the gap caused by thermal expansion or wear, maintaining sealing performance.

[0143] The interface structure of the water-tight and air-tight interfaces is designed as a concave-convex matching design:

[0144] Cylinder outer connection structure gas-tight interface 2-11 and cylinder outer connection water-tight interface 2-13: convex interface and concave interface precision fit, built-in cylinder gas-tight seal ring 2-12 and water-tight seal ring.

[0145] Thermal expansion compensation: the material with a larger thermal expansion coefficient is designed as a convex structure, which makes the convex interface more tightly embedded in the concave interface during operation, enhancing the sealing performance; the cylinder 2 structure is preferably convex because the engine working cylinder 2 first contacts the heat source, and its temperature is higher than that of the head plate 3 or the adapter plate 4.

[0146] The concave-convex structure combined with the seal ring prevents the combustion gas from leaking between the cylinder 2 and the head plate 3. This annular seal ring is not affected by the through connection bolts and has independent sealing performance. The arrangement in the groove can also improve the pressure resistance and the service life of the closed space.

[0147] Water-tight isolation: the cooling liquid in the cooling liquid interlayer 4-11 is in a closed circulation state through the cylinder outer connection water-tight interface 2-13, the head plate outer connection water-tight interface 3-10, and the adapter plate outer connection water-tight interface 4-7. The seal ring prevents the cooling liquid from seeping into the combustion chamber 1-2 or the external environment.

[0148] Linkage lubrication system:

[0149] The design of the oil seal seal ring avoids leakage of lubricating oil from the lubrication channel, and prevents external contaminants from entering the sealed area.

[0150] Lubrication oil supply path and lubrication process oil supply path:

[0151] Initial oil supply: the oil pump injects lubricating oil through the head plate end face oil supply hole 3-20 of the head plate 3 or the adapter plate end face oil supply hole 4-15 of the adapter plate 4.

[0152] End face oil seal system 1-5: lubricating oil flows into the end face seal ring oil guide hole 1-5-2-2 of the end face seal ring 1-5-2, and enters the bottom of the rotor end face oil seal groove 1-5-1.

[0153] Distributed to the common channel: lubricating oil enters the rotor oil common channel 1-5-1-3 through the oil seal groove oil guide hole 1-5-1-2.

[0154] Split to the sealing system:

[0155] Radial sealing system 1-3: lubricate the radial sealing roller 1-3-2 and the drag reduction roller 1-3-6 through the oil guide hole.

[0156] End face gas seal system 1-4: lubricate the end face sealing roller 1-4-2 and the end drag reduction roller 1-4-6 through the oil guide hole.

[0157] Lubricant forms oil film on rolling seal contact surface, reducing friction coefficient and dissipating heat. Oil film tension enhances sealing effect and reduces gas leakage. Redundant oil guide hole design ensures uniform coverage of all moving parts by lubricant, avoiding local dry friction.

[0158] Sealing and lubrication linkage:

[0159] Rolling seal drag reduction rollers 1-3-6 rely on lubricant to reduce friction, while the design of the lubrication path ensures that the oil precisely covers the sealing contact surface.

[0160] The rotary motion of the end face oil seal rotating ring is isolated from the combustion chamber 1-2 and the external environment by the oil film, while lubricating the bearing cage balls.

[0161] Water-tightness / air-tightness and structural strength linkage:

[0162] The concave-convex interface not only achieves sealing, but also enhances the connection strength of the cylinder 2 and the head plate 3 through mechanical interlocking, preventing misalignment due to vibration.

[0163] The circulating coolant of the coolant sandwich 4-11 conducts heat through the water-tight interface cylinder external water-tight interface 2-13, and the interface plate external water-tight interface 4-7 to avoid failure of the sealing element due to high temperature.

[0164] The elastic bearing cage automatically adjusts the position of the sealing roller when it expands or wears, maintaining contact pressure. Lubricant dynamically compensates for the gap caused by sealing element wear through a common channel.

[0165] The rolling seal of the rotor engine is mainly reflected in the radial sealing system 1-3 and the end face sealing system.

[0166] Radial sealing system 1-3: installed in the radial sealing element installation slot 1-3-1 at the junction of two adjacent working surfaces of the rotor 1, composed of radial sealing rollers 1-3-2 and radial sealing bearing cages 1-3-3. Radial sealing rollers 1-3-2 roll in the bearing cage to reduce friction.

[0167] End face sealing system: composed of end face air sealing system 1-4 and end face oil sealing system 1-5. End face air sealing system 1-4 adopts rolling friction sealing structure, composed of end face sealing rollers 1-4-2 and end face sealing bearing cages 1-4-3; end face oil sealing system 1-5 realizes oil sealing isolation through high-speed rotating end face oil sealing rotating ring.

[0168] Sealing process: during engine operation, radial sealing rollers 1-3-2 and end face sealing rollers 1-4-2 roll in their respective bearing cages, maintaining close contact with the cylinder 2 and the head plate 3, forming an effective seal to prevent high-pressure gas leakage. At the same time, rolling friction greatly reduces the wear and friction resistance of traditional sliding seals.

[0169] Water and air tightness: Water and air tight interfaces: Special water and air tight interfaces are provided at the joints of the cylinder 2, the head plate 3 and the adapter plate 4, such as the water and air tight interfaces 2-13 and 2-14 at the outer joint of the cylinder 2, and the corresponding water and air tight interfaces of the head plate 3 and the adapter plate 4.

[0170] Special sealing rings are provided at these interfaces to ensure water and air tightness at the joints.

[0171] Sealing process:

[0172] When the components are fastened by bolts, the sealing rings are compressed at the interfaces, forming effective water and air tight barriers. This design not only improves the sealing performance, but also effectively prevents misalignment caused by component vibration.

[0173] Lubrication oil supply path and lubrication process:

[0174] Oil supply starting point: Lubricating oil is pumped from the external oil tank to the engine interior by the oil pump.

[0175] End face oil supply hole: Lubricating oil first enters the engine interior through the end face oil supply hole on the head plate 3 or the adapter plate 4.

[0176] Oil seal system lubrication: Lubricating oil first enters the end face oil seal system 1-5, lubricating the end face oil seal carrier and the oil seal bearing cage, while forming an oil film barrier to prevent gas leakage.

[0177] Common oil passage: Lubricating oil after oil seal system lubrication flows into the rotor oil common passage 1-5-1-3 through the oil seal groove oil guide hole 1-5-1-2.

[0178] Radial and end face air tight seal system 1-4 lubrication: Lubricating oil in the common oil passage flows into the radial seal system 1-3 and the end face air tight seal system 1-4 through the oil guide holes respectively, lubricating the rolling seals of these systems.

[0179] During engine operation, lubricating oil continuously circulates and flows, continuously lubricating all parts that need lubrication. Rolling seals operate with low friction under the lubrication of lubricating oil, while lubricating oil also carries away heat generated by friction, playing a cooling role. In addition, the formation of lubricating oil film also enhances the sealing performance, further preventing gas leakage. The rolling seal, water tightness, air tightness and lubrication system of the rotor engine are a closely coordinated whole. Rolling seal reduces friction and wear, improves sealing performance; water tightness and air tightness design ensures stable operation of the engine under various working conditions; and the optimized lubrication system ensures long-term reliable operation of the components. The comprehensive application of these technologies makes the rotor engine perform well in power, efficiency and service life.

[0180] The assembly method is as follows:

[0181] ① The installation and positioning of the first head plate 3: the first head plate 3 with the installed wear plate is positioned according to the structural positioning requirements, the outer facade head plate outer connecting bolt interface 3-11 is sleeved into the positioning taper pin in the corresponding position of the fixed platform support, is placed on the fixed platform support and is leveled, the crankshaft 1-12 bearing is placed into the crankshaft 1-12 bearing sleeve, the stator 1-11 gear is placed into the stator 1-11 installation groove, and the stator installation bolt 3-7 hole is used;

[0182] ② The assembly of the first cylinder body 2: the cylinder body air-tight sealing ring 2-12 and the cylinder body outer connecting structure water-tight sealing ring 2-14 are respectively inserted into the cylinder body outer connecting structure air-tight interface 2-11 and the cylinder body 2 outer connecting cylinder body outer connecting water-tight interface 2-13 on the two sides of the first cylinder body 2, then the first cylinder body 2 is sleeved into the positioning taper pin in the corresponding position of the fixed platform support, and meanwhile the first cylinder body 2 and the cylinder body outer connecting structure air-tight interface 2-11 and the cylinder body 2 outer connecting cylinder body outer connecting water-tight interface 2-13 of the first head plate 3 are respectively aligned and sleeved into each other;

[0183] ③ The assembly of the rotor 1: the rotor 1 inner ring gear, the rotor 1 oil sealing system, the rotor end face air-tight system and the rotor 1 radial sealing system 1-3 are sequentially assembled according to the design principle, and the lubricating oil channel is pre-inspected;

[0184] Then the assembled rotor 1 is placed into the first cylinder body 2, and the rotor 1 inner ring gear is engaged with the stator 1-11 gear;

[0185] ④ The assembly of the crankshaft 1-12: the crankshaft 1-12 is respectively penetrated through the rotor 1, the stator 1-11 and the first head plate 3, so that the eccentric shaft is matched with the rotor 1 shaft sleeve, and it is ensured that the crankshaft 1-12 and the rotor 1 can rotate synchronously;

[0186] ⑤ The assembly of the connecting plate 4: the connecting plate 4 with the assembled shaft sleeve bearing and wear plate is centrally sleeved into the crankshaft 1-12 and falls to the first cylinder body 2, so that the connecting plate 4 is connected with the corresponding outer connecting structure air-tight interface and outer connecting structure water-tight interface of the installed sealing ring;

[0187] ⑥ The assembly of the second cylinder body 2: the second cylinder body 2 and the second rotor are installed in the above sequence;

[0188] ⑦ The installation and positioning of the second head plate 3: the reverse operation of ① is performed;

[0189] ⑧ The assembly of external components: the spark plug 2-6, the fuel injection nozzle 2-5, the inlet and outlet air pipeline, the fuel pump, the oil pump, the cooling pump, the external connecting transmission system, the starting motor and the like are installed;

[0190] 9. Installation debugging: according to the use of installation to the application device suspension bracket, connect the fuel tank, oil tank, ignition controller, external power supply, temperature control sensor, air inlet air filter, clutch, load shaft connector external devices, etc., and connect the whole rotor engine into a whole through long and short bolt groups, and fasten the bolt group torque according to the design requirements.

[0191] 10. Pre-starting check: respectively install the attitude check, mechanical cooperation check, oil circuit detection, smooth idling check, water-tight and air-tight check, etc., so as to have all reliable conditions for starting operation.

[0192] The detailed working process of the rotor engine sealing and lubricating system is as follows:

[0193] 1. Sealing and lubrication of the radial sealing system 1-3;

[0194] The core components include a radial sealing roller 1-3-2, a drag reduction roller 1-3-6, and a rolling sealing ball 1-3-5.

[0195] The sealing process: the radial sealing roller 1-3-2 is supported by the elastic retainer, and the pressure is transmitted through the drag reduction roller 1-3-6 to form rolling contact with the inner wall of the cylinder body 2. The two ends of the roller are matched with the trajectory groove of the head plate 3 through the rolling sealing ball 1-3-5 to absorb axial vibration. The chamber is isolated: the roller rolls along the inner wall of the cylinder body 2 to separate the combustion chamber 1-2 from the adjacent compression chamber 2-17 to prevent gas leakage.

[0196] The lubrication process: the main lubrication path: the lubricating oil enters the installation groove from the common channel through the radial oil guide hole 1-3-7 to lubricate the contact surface of the roller and the drag reduction roller 1-3-6. End lubrication: the trajectory groove oil hole 3-14 injects oil into the trajectory groove to lubricate the rolling sealing ball 1-3-5 and the spring retainer 1-3-4.

[0197] 2. Dynamic sealing of the end face air sealing system 1-4;

[0198] The core components include an end face sealing roller 1-4-2, an end drag reduction roller 1-4-6, and an end sealing top bead 1-4-5.

[0199] The sealing process: the elastic retainer applies pressure to the sealing roller through the end drag reduction roller 1-4-6 to make it tightly adhere to the end face 3-2 of the head plate. End face isolation: the sealing roller rolls along the end face 3-2 of the head plate to separate different working chambers.

[0200] The lubrication process: lubricating oil injection: the common channel supplies oil to the installation groove through the end face oil guide hole 1-4-7 to form an oil film between the roller and the end face. End lubrication: lubricating oil penetrates to the end sealing top bead 1-4-5 to reduce axial friction.

[0201] III. Oil film isolation of end face oil seal system 1-5

[0202] Core components include end face seal rotating ring 1-5-2, circular bearing retainer 1-5-3, oil seal groove oil guide hole 1-5-1-2.

[0203] Oil seal process: dynamic oil film formation: the seal rotating ring rotates at high speed with the rotor 1, and the centrifugal force makes the lubricating oil form an oil film between the rotating ring and the head plate 3, isolating the gas from the external environment. Ball support: the circular bearing retainer 1-5-3 supports the rotating ring through the end face oil seal ball 1-5-4, the ball rolls in the lower groove, reducing friction resistance.

[0204] Lubrication path: direct oil supply: the oil pump sprays lubricating oil onto the upper groove of the rotating ring through the oil supply hole of the head plate 3. Circulating lubrication: lubricating oil flows into the lower groove through the rotating ring oil guide hole, lubricates the ball, and then returns to the common channel through the oil seal groove oil guide hole 1-5-1-2.

[0205] IV. Compound sealing of cylinder 2 and head plate 3

[0206] Core components include cylinder outer connection structure gas-tight interface 2-11, head plate outer connection gas-tight interface 3-9, cylinder gas-tight seal ring 2-12.

[0207] Gas-tight process: concave-convex engagement: the convex part of the cylinder 2 gas-tight interface is embedded in the notch of the head plate 3, the built-in seal ring is deformed under pressure, forming a multi-stage gas seal. Thermal expansion compensation: the thermal expansion coefficient of the cylinder 2 material is greater than that of the head plate 3, and the convex part expands further to press the seal ring tightly at high temperature.

[0208] Water-tight process: cooling liquid circulation: cooling liquid flows between the interlayer of the cylinder 2 and the interlayer of the head plate 3, preventing leakage through the water-tight interface and the seal ring. Structural reinforcement: the concave-convex interface design makes the cylinder 2 and the head plate 3 form a mechanical interlock, avoiding vibration misalignment.

[0209] V. Global collaborative process of lubrication system

[0210] Key path: head plate 3 oil supply hole → rotating ring upper groove → common channel → each sealing system

[0211] Start-up phase: the oil pump sprays lubricating oil to the rotating ring through the oil supply hole, and the lubricating oil enters the common channel through the oil guide hole.

[0212] Running phase: radial seal lubrication: common channel → radial oil guide hole 1-3-7 → drag reduction roller 1-3-6 → roller. End face gas seal lubrication: common channel → end face oil guide hole 1-4-7 → end drag reduction roller 1-4-6 → roller. Circulating recovery: excess lubricating oil in each system returns to the oil pool through the oil seal groove oil guide hole 1-5-1-2. Cooling liquid interlayer 4-11 circulates through the cylinder 2 water-tight interface, cooling the temperature of the cylinder 2.

[0213] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sealing and lubrication system for a rotary engine comprising at least one cylinder and a rotor mounted within the cylinder, head plates on either side of the cylinder, characterized in that, The rotor is provided with a radial sealing system, an end face air sealing system, an end face oil sealing system and a sealing member lubricating system; The radial sealing system is arranged in a radial sealing member installation groove at the joint of two rotor working surfaces and comprises: The radial sealing system comprises a radial sealing roller, a radial sealing bearing retainer and a resistance reducing roller, the radial sealing roller is a rolling component, the radial sealing bearing retainer is an elastic support structure, the upper part is provided with the resistance reducing roller and is tangent to the radial sealing roller, the elastic support force generated by the radial sealing bearing retainer is transmitted to the radial sealing roller through the resistance reducing roller, the radial sealing roller is tightly combined with the inner wall of the cylinder body and rolls, and the vibration energy is absorbed, so that the sealing and isolation of the rotor and the cylinder body in the radial air tight part between the working surfaces are completed. A plurality of radial oil guide holes are arranged on the radial sealing member installation groove and are communicated with the common oil passage of the rotor, so as to provide lubrication and cooling for the moving components of the radial sealing system.

2. The sealing and lubrication system of a rotary engine according to claim 1, characterized in that, The radial sealing roller is a cylindrical rolling component, and end portion spring retainers and rolling sealing balls are arranged at both ends of the radial sealing roller.

3. The sealing and lubricating system of the rotor engine according to claim 2, wherein The end face sealing ball track groove is internally provided with a spherical surface structure and is used in cooperation with the rolling sealing ball, and a track groove oil supply hole is arranged in the groove; the rolling sealing ball maintains the contact pressure with the end face sealing ball track groove arranged on the end cover plate through the elastic pre-expanding force, so that the end portion of the radial sealing roller maintains the sealing and lubrication in the rolling movement and absorbs the axial vibration energy of the radial sealing roller.

4. The sealing and lubrication system of a rotary engine according to claim 1, characterized in that, The rotor end face is provided with an end face air sealing system, which comprises an end face sealing roller, an end face sealing bearing retainer and an end portion resistance reducing roller, wherein: The end face sealing roller rolls in the end face sealing member installation groove, and end portion spring retainers and end portion sealing top beads are arranged at both ends of the end face sealing roller; the end face sealing bearing retainer is an elastic support structure, the end portion resistance reducing roller is arranged on the end face sealing bearing retainer, the end portion resistance reducing roller is tangent to the end face sealing roller, the elastic support force of the end face sealing bearing retainer is transmitted to the end face sealing roller through the end portion resistance reducing roller, and the end face sealing roller is tightly contacted with the end face of the end cover plate, so that the sealing and isolation of the end face air tight part between the working surfaces are realized in the rotation of the rotor; a plurality of end face oil guide holes are arranged in the end face sealing member installation groove and are communicated with the common oil passage of the rotor, so as to provide lubrication and cooling for the moving components of the end face air sealing system.

5. The sealing and lubrication system for a rotary engine as set forth in claim 1, wherein, The rotor end face is provided with an end face oil sealing system, which comprises a rotor end face oil sealing groove, an end face sealing rotating ring and a circular ring bearing retainer; the end face sealing rotating ring and the circular ring bearing retainer are arranged in the rotor end face oil sealing groove; The end face sealing rotating ring is provided with at least one end face sealing ring upper groove at the upper part; The circular ring bearing retainer is an elastic closed loop structure, is provided with an end face oil sealing ball and is matched with the end face sealing rotating ring in the rotor end face oil sealing groove to realize the high-speed rotation in the sealed state.

6. The sealing and lubricating system of the rotor engine according to claim 5, wherein The rotor end face oil sealing groove is provided with an oil sealing groove lower groove and an oil sealing groove oil guide hole at the bottom; the oil sealing groove oil guide hole is communicated with the common oil passage of the rotor. The end face seal rotating ring is provided with a plurality of rotating ring oil guide holes in the groove on the end face seal ring and is penetrated from top to bottom, and the lower part is provided with an end face seal ring lower groove; The circular ring bearing retainer is a wave-shaped elastic closed loop structure, and is provided with end face oil seal balls at intervals from top to bottom, and the end face oil seal balls are limited in rotation in cooperation with the end face seal rotating ring; the circular ring bearing retainer is limited in rotation in cooperation with the end face seal ring lower groove through the end face oil seal balls, thereby forming a limited rotation structure. One way of the lubricating oil is the rotor oil public channel, which enters the end face oil seal system through the oil seal groove oil guide hole for lubrication; the other way is to supply lubricating oil to the upper groove of the seal ring in the common area of the rotor and the stator through the end face oil supply hole of the end cover plate, and to complete the self-lubrication of the oil seal system through the rotating ring oil guide hole to the circular ring bearing retainer; and under the double action of oil pressure and centrifugal force, the oil enters the rotor oil public channel through the oil seal groove oil guide hole again, thereby supplying oil to other lubrication systems.

7. The sealing and lubrication system of a rotary engine as defined in claim 1 wherein, The cylinder body comprises a cylinder body inner shell and a cylinder body outer shell, forming a double-layer structure with a cooling liquid interlayer in the middle. The end cover plate comprises an end cover plate outer shell and an end cover plate inner shell, forming a double-layer structure with an end cover plate cooling liquid interlayer in the middle, and corresponding to the structure of the cylinder body, forming a mutual inlaid cooperation structure. An adapter plate is further arranged between two or more cylinder bodies, and the adapter plate has a structure similar to the inner side of the end cover plate. The cylinder body and the end cover plate are provided with a cylinder body outer connection structure air-tight interface and a cylinder body air-tight seal ring in a convex-concave cooperation manner at an air-tight interface position. The cylinder body and the end cover plate are provided with a cylinder body outer connection structure water-tight interface and a cylinder body outer connection structure water-tight seal ring in a convex-concave cooperation manner at a water-tight interface position. Similarly, the end cover plate and the cylinder body are provided with an end cover plate outer connection air-tight interface and an end cover plate outer connection water-tight interface in a convex-concave cooperation manner corresponding to the air-tight and water-tight interface positions. The adapter plate and the cylinder body are provided with an adapter plate outer connection air-tight interface and an adapter plate outer connection water-tight interface in a convex-concave cooperation manner corresponding to the air-tight and water-tight interface positions. The convex-concave cooperation between the cylinder body and the end cover plate or the adapter plate is designed in a convex type for a material with a large thermal expansion coefficient and in a concave type for a material with a small thermal expansion coefficient; the cylinder body of the same material is designed in a convex type for the interface.

8. The sealing and lubrication system of a rotary engine as defined in claim 1, wherein, The end cover plate inner side is provided with an end cover plate end face, and the end cover plate end face is provided with an end cover plate end face oil supply hole for supplying oil to the rotor end face oil seal system through an oil pump. A plurality of adapter plates are arranged between the cylinder bodies, and the adapter plates are provided with adapter plate faces on both sides, and the adapter plates are provided with adapter plate end face oil supply holes on both sides for supplying oil to the rotor end face oil seal system through an oil pump.

9. The sealing and lubricating system of the rotor engine according to claim 1, wherein: The cylinder body is provided with an air inlet channel and an exhaust channel, which are connected to an air inlet chamber and a working chamber, respectively; An oil injection nozzle is arranged in the air inlet chamber, and a spark plug is arranged in the compression chamber; The cylinder body outer connection bolt interface is connected to the end cover plate through a shell connection bolt set.

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