CN218206852U - Novel rotary engine structure - Google Patents

Abstract

The utility model discloses a novel rotary engine structure, including cylinder body assembly, front end housing assembly, rear end cap assembly, main shaft assembly and rotor assembly, cylinder body assembly, front end housing assembly and rear end cap assembly are type of triangle-shaped structure, and three semicircle cavitys have been seted up at cylinder body assembly center, and the three semicircle of three semicircle cavitys is met punishment and is provided with radial seal spare respectively, the preceding centre bore has been seted up at front end housing assembly center, and the rear centre bore has been seted up at rear end cap assembly center, and cylinder body assembly, front end housing assembly and rear end cap assembly fixed connection form the engine body, rotor assembly includes "8" style of calligraphy rotor, "8" style of calligraphy rotor both ends face is provided with the end face seal spare respectively, "8" style of calligraphy rotor sets up in three semicircle cavitys, and the main shaft assembly passes "8" style of calligraphy rotor center in front end cap assembly, the cylinder body assembly in proper order and the rear end cap assembly's of rear centre bore to main shaft assembly both ends carry on spacingly.

Description

Novel rotary engine structure

Technical Field

The utility model belongs to the technical field of the engine, concretely relates to novel rotary engine structure.

Background

Rotary engines are engines that utilize rotary motion to generate power, originally developed by Wankel (Wankel). The wankel engine developed by wankel includes: a housing, an inner surface of which is formed by an epitrochoid; and a triangular rotor rotating in the housing. The inner space of the housing is divided into three spaces by the rotor, and the volumes of the spaces are changed according to the rotation of the rotor, thereby continuously performing four strokes of intake → compression → work → exhaust. The wankel engine is configured such that each stroke of the rotor takes three times per revolution and the eccentric shaft rotates three revolutions. Since wankel engines were developed, various studies have been conducted to optimize the design of wankel engines, and continued development of improved rotary engines.

The rotary engine is a high output engine which can be easily miniaturized due to its simple structure and can generate high output power in high-speed operation. Due to these features, the rotary engine has an advantage that it can be applied to various apparatuses such as a heat pump system, an automobile, a bicycle, an airplane, a water motorcycle, a chain saw, a remote controlled airplane, and the like. In addition, the rotary engine has advantages of low vibration and noise and low NOx emission due to its uniform rotational force.

However, the thermal efficiency of the existing rotary engine is low due to low compression ratio, and meanwhile, the existing rotary engine has high local thermal load due to the fixed combustion surface and exhaust position of the cylinder body, and the radial sealing strip of the rotor is difficult to forcibly lubricate and is easy to grind.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art not enough, provide a novel rotor engine structure.

In order to solve the technical problem, the technical scheme of the utility model is that: a novel rotor engine structure comprises a cylinder body assembly, a front end cover assembly, a rear end cover assembly, a main shaft assembly and a rotor assembly, wherein the cylinder body assembly, the front end cover assembly and the rear end cover assembly are of a triangle-like structure, three semicircular cavities are formed in the center of the cylinder body assembly, radial sealing elements are arranged at the joints of three semicircles of the three semicircular cavities respectively, a front center hole is formed in the center of the front end cover assembly, a rear center hole is formed in the center of the rear end cover assembly, the front center hole, the three semicircular cavities and the rear center hole are coaxially arranged, the cylinder body assembly, the front end cover assembly and the rear end cover assembly are fixedly connected to form an engine body, the rotor assembly comprises an 8-shaped rotor, end face sealing elements are arranged on two end faces of the 8-shaped rotor respectively, the 8-shaped rotor is arranged in the three semicircular cavities, the main shaft assembly sequentially penetrates through the front center hole of the front end cover assembly, the 8-shaped rotor center in the cylinder body assembly and the rear center hole of the rear end cover assembly, and the two ends of the main shaft assembly are limited.

Preferably, the cylinder body assembly comprises a lubricating oil channel, an oil injector mounting hole, a combustion chamber, a cooling water cavity, a positioning pin hole, a triangular cylinder body, a radial sealing element mounting groove and a bolt hole, the center of the triangular cylinder body is provided with three semicircular cavities, the three tops of the three semicircular cavities are respectively provided with the combustion chamber, one side of the combustion chamber, which is close to the front end cover assembly, is provided with the oil injector mounting hole, the joint of the three semicircles of the three semicircular cavities is respectively provided with the radial sealing element mounting groove, the radial sealing element is mounted in the radial sealing element mounting groove, the three outer walls of the triangular cylinder body are provided with the lubricating oil channel, the lubricating oil channel is communicated with the radial sealing element mounting groove, the cooling water cavity is uniformly distributed on the triangular cylinder body around the three semicircular cavities, and the positioning pin hole and the bolt hole are uniformly distributed on the edge of the triangular cylinder body.

Preferably, the front end cover assembly comprises an exhaust hole, a front lubricating oil outer hole, an oil injector mounting seat, a front cooling water cavity, a front lubricating oil inner hole, a gear bolt hole, a front positioning pin hole, a front bolt hole, a front central hole and a front end cover body, wherein the center of the front end cover body is provided with the central hole, the gear bolt hole is circumferentially distributed on the inner side of the central hole, three exhaust holes are uniformly distributed on the front end cover body around the front central hole, when the 8-shaped rotor rotates to the phase position of the exhaust hole, the air outlet of the 8-shaped rotor is communicated with the exhaust holes, three oil injector mounting seats are uniformly distributed on the front end cover body close to the edge, the three oil injector mounting seats correspond to the three oil injector mounting holes in position, the front lubricating oil outer hole is distributed on the outer end surface of the front end cover body, the front lubricating oil inner hole is distributed on the inner end surface of the front end cover body, the front lubricating oil outer hole is communicated with the front lubricating oil inner hole in position corresponding to the end surface sealing element in position, the front cooling water cavity is distributed on the inner end surface of the front end cover body, the front positioning pin hole and the bolt hole correspond to the bolt hole in position.

Preferably, the rear end cover assembly comprises air inlet holes, a rear cooling water cavity, a rear lubricating oil inner hole, a retainer ring groove, a bearing hole, a rear lubricating oil outer hole, a rear bolt hole, a rear positioning pin hole, a rear central hole and a rear end cover body, wherein the center of the rear end cover body is provided with the rear central hole, the inner ring of the rear central hole is provided with the retainer ring groove and the bearing hole, three air inlet holes are uniformly distributed on the rear end cover body around the rear central hole, and when the 8-shaped rotor rotates to the phase position of the air inlet holes, the air inlet of the 8-shaped rotor is communicated with the air inlet holes; the rear end cover comprises a rear end cover body and is characterized in that a rear cooling water cavity is distributed on the inner end face of the rear end cover body, the rear cooling water cavity corresponds to the cooling water cavity in position, a rear lubricating oil inner hole is further distributed on the inner end face of the rear end cover body, rear lubricating oil outer holes are uniformly distributed on the outer end face of the rear end cover body, the rear lubricating oil outer holes are communicated with the rear lubricating oil inner hole, rear bolt holes and rear positioning pin holes are uniformly distributed on the edge of the rear end cover body, the rear bolt holes correspond to the bolt holes in position, and the rear positioning pin holes correspond to the positioning pin holes in position.

Preferably, the main shaft assembly comprises a front balance weight, a compression nut, a first flat key, a front half shaft, a rear half shaft, a flywheel, a second flat key and a nut, the front balance weight is sleeved on the front side of the front half shaft, the compression nut is sleeved on the front half shaft on the front side of the front balance weight to compress the front balance weight, the rear side of the front half shaft is connected with the front side of the rear half shaft through the first flat key, the flywheel is sleeved on the rear side of the rear half shaft, the flywheel is connected with the rear half shaft through the second flat key, and the rear half shaft on the rear side of the flywheel is provided with the nut lock; the axial of preceding semi-axis and latter half axle still passes through the shaft shoulder screw fixation, axial oil duct and radial oil duct have been seted up to back semi-axis inside, axial oil duct and radial oil duct intercommunication.

Preferably, the fuel injector further comprises other accessories, wherein the other accessories comprise check rings, ball bearings, spark plugs, fuel injectors, internal gears, exhaust manifolds, needle roller bearings, fixing bolts, positioning pins, oil seals, external gears, a first air inlet main pipe and a second air inlet main pipe, the check rings are sleeved on the middle rear side of a rear half shaft and are installed in check ring grooves, the ball bearings are sleeved on the rear half shaft on the right side of the check rings and are installed in bearing holes, oil seals are sleeved on the rear half shaft on the right side of the ball bearings, the number of the spark plugs is three, the three spark plugs are installed on the three side surfaces of the triangular cylinder body respectively, the head parts of the spark plugs penetrate into a combustion chamber, the fuel injectors are installed at a fuel injector installation seat, the head parts of the fuel injectors penetrate into a combustion chamber through fuel injector installation holes, the internal gears are fixed on the inner end face of the front end cover body through the bolts and the gear bolt holes in a matched mode, the external gears are sleeved on the front side of the rear half shaft, the external gears are fixed on 8-shaped rotors through spring pins, and the internal gears are meshed with the external gears; the three exhaust manifolds are respectively arranged at the exhaust holes, the needle bearing is sleeved between the 8-shaped rotor and the rear half shaft, the radial oil duct corresponds to the position of the needle bearing, the fixing bolt sequentially penetrates through the front bolt hole, the bolt hole and the rear bolt hole to connect the front end cover assembly, the cylinder body assembly and the rear end cover assembly through bolts, the positioning pin sequentially penetrates through the front positioning pin hole, the positioning pin hole and the rear positioning pin hole to position the front end cover assembly 2, the cylinder body assembly and the rear end cover assembly, the first air inlet main pipe is connected with the second air inlet main pipe, and the other end of the second air inlet main pipe is connected with the air inlet.

Preferably, radial seal is three groups, and radial seal includes radial spring and radial seal strip, and radial spring and radial seal strip are installed in radial seal mounting groove, and radial seal strip is spacing in radial seal mounting groove with radial spring, end face seal is two sets of, and end face seal includes end face spring and end face seal strip, "8" style of calligraphy rotor both ends face is provided with end face seal mounting groove respectively, and end face spring and end face seal strip are installed in end face seal mounting groove, and end face seal strip is spacing in end face seal mounting groove with end face spring.

Preferably, the triangular cylinder body, the front end cover body and the rear end cover body are of a triangle-like structure, the triangle-like structure is formed by connecting three long sides and three short sides at intervals, a front positioning pin hole or a rear positioning pin hole is formed in the center of each long side, a front bolt hole or a rear bolt hole is formed in the joint of two adjacent sides, lubricating oil passages are respectively formed in the three long sides of the triangular cylinder body, and spark plug mounting holes are respectively formed in the three short sides of the triangular cylinder body and used for mounting spark plugs.

Preferably, the three semicircular cavities are formed by connecting three semicircular cavities, combustion chambers are respectively formed in the tops of the three semicircular cavities, and radial sealing elements are respectively arranged at the joints of the three semicircular cavities.

Compared with the prior art, the utility model has the advantages of:

(1) The utility model discloses a novel rotary engine structure, similar inside and outside exchange wankel rotary engine, its rotor is oval "8" style of calligraphy, and the cylinder body is class triangle-shaped, and this cooperation form has increased the volume difference, can improve the compression ratio by a relatively large margin, has improved the thermal efficiency greatly, the utility model discloses on the basis of inheriting many advantages of traditional wanker rotary engine, the effectual shortcoming of low thermal efficiency that has solved the low heat efficiency that leads to of traditional triangle rotary engine compression ratio, it has more outstanding acting efficiency and bigger power map under the little volume;

(2) The utility model discloses three tops of three semicircle cavitys of rotary engine have seted up the combustion chamber respectively, and each combustion chamber is provided with spark plug and sprayer respectively, and the spark plug interval of three combustion chambers ignites, and the sprayer ignites simultaneously, and three combustion chamber interval ignites, avoids the local high temperature of cylinder body, improves cylinder body thermal stress state, avoids the cylinder body part to cause the cylinder body to seal not tight because of thermal deformation is too big, the power decline phenomenon appears, improves engine service fatigue life;

(3) The utility model discloses the inner gear is fixed in the terminal surface in the front end housing body through bolt and gear bolt hole cooperation, and on the outer gear was fixed in "8" style of calligraphy rotor through the spring catch, inner gear and external gear meshing, its gear ratio was 3:2, therefore, the 8-shaped rotor rotates 1 circle anticlockwise, the main shaft assembly rotates 2 circles clockwise, and the low-speed torque characteristic of the engine is improved;

(4) The utility model discloses rotary engine includes oval "8" style of calligraphy rotor and class triangle-shaped cylinder body, and the engine motion part is still less, and especially radial seal spare lubricated state obtains great improvement, replaces the radial seal spare of three semicircle cavitys department with the sealing member at traditional triangle-shaped rotor top, changes the motion piece into the mounting to independently lubricate radial seal spare, possess better dynamic property and economic nature and reliability when making its operation, have very big potential in the aspect of the application of aviation system;

(5) The utility model discloses rotor engine air intake compression cylinder through "8" style of calligraphy rotor when operation gas mixture realizes through "8" style of calligraphy rotor exhaust waste gas after the acting, and the engine is compacter on the whole, and power density is bigger, has better dynamic nature and economic nature and thermal efficiency.

Drawings

Fig. 1 is a schematic perspective view of a novel rotor engine structure of the present invention;

FIG. 2 is a schematic cross-sectional structural view of a novel rotary engine structure of the present invention;

FIG. 3 is a schematic view of a cylinder assembly of a novel rotary engine structure according to the present invention;

FIG. 4 is a schematic view of a front end cover assembly of a novel rotary engine structure according to the present invention;

FIG. 5 is a schematic view of a front end cover assembly of a novel rotary engine structure according to the present invention;

FIG. 6 is a schematic view of a rear end cover assembly of a novel rotary engine structure according to the present invention;

FIG. 7 is a schematic view of a rear end cover assembly of a novel rotary engine structure according to the present invention;

fig. 8 is a schematic view of a main shaft assembly structure of a novel rotary engine structure of the present invention.

Description of reference numerals:

1. the device comprises a cylinder body assembly, 2, a front end cover assembly, 3, a rear end cover assembly, 4, a main shaft assembly, 5, a rotor assembly, 6, a radial sealing element, 7, an end face sealing element, 8 and other accessories;

101. a lubricating oil channel 102, an oil injector mounting hole 103, a combustion chamber 104, a cooling water cavity 105, a positioning pin hole 106, a triangular cylinder body 107, a radial sealing element mounting groove 108, a three-semicircular cavity 109 and a bolt hole;

201. the oil sprayer comprises an exhaust hole 202, a front lubricating oil outer hole 203, an oil sprayer mounting seat 204, a front cooling water cavity 205, a front lubricating oil inner hole 206, a gear bolt hole 207, a front positioning pin hole 208, a front bolt hole 209, a front central hole 210 and a front end cover body;

301. the structure comprises an air inlet hole, 302, a rear cooling water cavity, 303, a rear lubricating oil inner hole, 304, a retainer ring groove, 305, a bearing hole, 306, a rear lubricating oil outer hole, 307, a rear bolt hole, 308, a rear positioning pin hole, 309, a rear central hole, 310 and a rear end cover body;

401. the engine comprises a front counterweight, 402, a compression nut, 403, a shoulder screw, 404, a first flat key, 405, a front half shaft, 406, a rear half shaft, 407, an axial oil passage, 408, a flywheel, 409, a second flat key, 410, a nut, 411 and a radial oil passage;

501. the 8-shaped rotor 502 and the end face sealing element mounting groove are arranged;

601. a radial spring 602, a radial seal strip;

701. an end spring 702, an end seal;

801. the fuel injector comprises a retainer ring, 802, a ball bearing, 803, a spark plug, 804, a fuel injector, 805, an internal gear, 806, an exhaust manifold, 807, a needle bearing, 808, a fixing bolt, 809, a positioning pin, 810, an oil seal, 811, an external gear, 812, a first air inlet manifold, 813 and a second air inlet manifold.

Detailed Description

The following description of the embodiments of the present invention is provided in connection with the following embodiments:

it should be noted that the structures, ratios, sizes, etc. illustrated in the present specification are only used to cooperate with the contents disclosed in the specification for the understanding and reading of the people skilled in the art, and are not used to limit the limit conditions that the present invention can be implemented, and any modifications of the structures, changes of the ratio relationships or adjustments of the sizes should still fall within the scope that the technical contents disclosed in the present invention can cover without affecting the functions and the achievable purposes of the present invention.

Example 1

As shown in fig. 1 and 2, a novel rotary engine structure includes a cylinder body assembly 1, a front end cover assembly 2, a rear end cover assembly 3, a spindle assembly 4 and a rotor assembly 5, where the cylinder body assembly 1, the front end cover assembly 2 and the rear end cover assembly 3 are all of similar triangular structures, a three-semicircular cavity 108 is formed in the center of the cylinder body assembly 1, radial sealing members 6 are respectively disposed at the joints of three semicircles of the three-semicircular cavity 108, a front center hole 209 is formed in the center of the front end cover assembly 2, a rear center hole 309 is formed in the center of the rear end cover assembly 3, the front center hole 209, the three-semicircular cavity 108 and the rear center hole 309 are coaxially disposed, the cylinder body assembly 1, the front end cover assembly 2 and the rear end cover assembly 3 are fixedly connected to form an engine body, the rotor assembly 5 includes an "8" -shaped rotor 501, end face sealing members 7 are respectively disposed on two end faces of the "8" -shaped rotor 501, the "8" -shaped rotor 501 is disposed in the three-semicircular cavity 108, the spindle assembly 4 sequentially passes through the front end cover assembly 2, the center of the "8" -shaped rotor assembly 501 and the rear end cover assembly 309 is limited.

Example 2

As shown in fig. 3, the cylinder block assembly 1 includes a lubricating oil passage 101, an oil injector mounting hole 102, a combustion chamber 103, a cooling water cavity 104, a positioning pin hole 105, a triangular cylinder block body 106, a radial seal mounting groove 107 and a bolt hole 109, the triangular cylinder block body 106 is centrally provided with three semicircular cavities 108, the three tops of the three semicircular cavities 108 are respectively provided with the combustion chamber 103, one side of the combustion chamber 103 close to the front end cover assembly 2 is provided with the oil injector mounting hole 102, the three semicircular joints of the three semicircular cavities 108 are respectively provided with the radial seal mounting grooves 107, the radial seal 6 is mounted in the radial seal mounting groove 107, the three outer walls of the triangular cylinder block body 106 are provided with the lubricating oil passage 101, the lubricating oil passage 101 is communicated with the radial seal mounting grooves 107, the triangular cylinder block body 106 around the three semicircular cavities 108 is uniformly distributed with the cooling water cavities 104, and the edge of the triangular cylinder block body 106 is uniformly distributed with the positioning pin hole 105 and the bolt hole 109.

The two end faces of the triangular cylinder body 106 are provided with regularly distributed cooling water cavities 104 for cooling the surface temperature of the cylinder body when the engine runs and reducing the heat load of the combustion chamber part of the cylinder body; the connecting part of the three semicircles of the three semicircular cavities 108 is provided with a radial sealing element mounting groove 107 for mounting a radial sealing element 6 and reducing or preventing radial air leakage of a combustion chamber, a lubricating oil channel 101 is arranged on the triangular cylinder body 106 and used for supplying a proper amount of lubricating oil to the radial sealing element mounting groove 107 to lubricate and cool the radial sealing element 6 and reduce abrasion of the radial sealing element 6, and the positioning pin hole 105 is used for ensuring the assembling positions of the cylinder body assembly 1, the front end cover assembly 2 and the rear end cover assembly 3.

Example 3

As shown in fig. 4 and 5, the front end cover assembly 2 includes an exhaust hole 201, a front lubricating oil outer hole 202, an injector mounting seat 203, a front cooling water cavity 204, a front lubricating oil inner hole 205, a gear bolt hole 206, a front positioning pin hole 207, a front bolt hole 208, a front central hole 209 and a front end cover body 210, wherein the center of the front end cover body 210 is provided with a central hole 209, the gear bolt hole 206 is circumferentially distributed at the inner side of the central hole 209, three exhaust holes 201 are uniformly distributed on the front end cover body 210 around the front central hole 209, when the 8-shaped rotor 501 rotates to the phase of the exhaust holes 201, the air outlet of the 8-shaped rotor 501 is communicated with the exhaust holes 201, three injector mounting seats 203 are uniformly distributed at the edge of the front end cover body 210, the three injector mounting seats 203 correspond to the positions of the three injector mounting holes 102, the front lubricating oil outer holes 202 are distributed on the outer end surface of the front end cover body 210, the inner end surface of the front end cover body 210 is distributed with the front lubricating oil outer hole 205, the front lubricating oil outer hole 202 is communicated with the front lubricating oil inner hole 205, the front lubricating oil inner hole 205 is communicated with the front lubricating oil inner hole 205, the front lubricating oil inner hole 105 is distributed on the inner hole 210, the inner hole 208, the inner hole of the front cooling water cavity 105, the front end cover body 207 corresponds to the positioning pin hole 207, the front cooling water cavity 105, the positioning pin hole 207, the front end cover body 207, the positioning pin hole 207 and the front end cover body 210.

The 3 exhaust holes 201 are uniformly distributed on the front end cover body 210 and form an exhaust channel with an exhaust manifold 806 and the 8-shaped rotor 501, the three oil injector mounting seats 203 are distributed on the outer side surface of the front end cover body 210, the front central hole 209 is used for mounting a main shaft bearing, the front lubricating oil outer hole 202 is communicated with the front lubricating oil inner hole 205 and is used for lubricating and cooling the end face sealing element 7, the front cooling water cavity 204 is communicated with the cooling water cavity 104 and the rear cooling water cavity 302 to form a cooling water channel, and the three gear bolt holes 206 are distributed on the inner side of the body 2 and are used for mounting an inner gear 805.

Example 4

As shown in fig. 6 and 7, the rear end cover assembly 3 includes air inlet holes 301, a rear cooling water cavity 302, a rear lubricating oil inner hole 303, a retainer groove 304, a bearing hole 305, a rear lubricating oil outer hole 306, a rear bolt hole 307, a rear positioning pin hole 308, a rear central hole 309 and a rear end cover body 310, wherein a rear central hole 309 is formed in the center of the rear end cover body 310, the retainer groove 304 and the bearing hole 305 are formed in the inner ring of the rear central hole 309, three air inlet holes 301 are uniformly distributed on the rear end cover body 310 around the rear central hole 309, and when the 8-shaped rotor 501 rotates to the phase of the air inlet holes 301, the air inlet of the 8-shaped rotor 501 is communicated with the air inlet holes 301; the rear end cover comprises a rear end cover body 310, and is characterized in that a rear cooling water cavity 302 is distributed on the inner end surface of the rear end cover body 310, the rear cooling water cavity 302 corresponds to the cooling water cavity 104 in position, a rear lubricating oil inner hole 303 is further distributed on the inner end surface of the rear end cover body 310, rear lubricating oil outer holes 306 are uniformly distributed on the outer end surface of the rear end cover body 310, the rear lubricating oil outer holes 306 are communicated with the rear lubricating oil inner hole 303, rear bolt holes 307 and rear positioning pin holes 308 are uniformly distributed on the edge of the rear end cover body 310, the rear bolt holes 307 correspond to the bolt holes 109 in position, and the rear positioning pin holes 308 correspond to the positioning pin holes 105 in position.

The front cooling water cavity 204, the cooling water cavity 104 and the rear cooling water cavity 302 are communicated to reduce the heat load of the triangular cylinder body 106.

The outer side of the rear end cover body 310 is provided with three air inlets 301 which form an air inlet channel with the 8-shaped rotor 501, and the front end cover body 210 and the rear end cover body 310 are provided with a lubricating oil channel for lubricating the main shaft assembly 4 and a cooling water cavity for water return.

The rear end cover body 310 is provided with a bearing hole 305 and a retainer ring groove 304 for bearing installation and limitation, and the rear end cover body 310 is provided with a rear lubricating oil inner hole 303 and a rear lubricating oil outer hole 306 which are communicated with each other and used for supplying oil and lubricating the end face sealing element 7.

Example 5

As shown in fig. 8, the spindle assembly 4 includes a front counterweight 401, a compression nut 402, a first flat key 404, a front half shaft 405, a rear half shaft 406, a flywheel 408, a second flat key 409 and a nut 410, the front counterweight 401 is sleeved on the front side of the front half shaft 405, the compression nut 402 is sleeved on the front half shaft 405 on the front side of the front counterweight 401 to compress the front counterweight 401, the rear side of the front half shaft 405 is connected with the front side of the rear half shaft 406 through the first flat key 404, the rear side of the rear half shaft 406 is sleeved with the flywheel 408, the flywheel 408 is connected with the rear half shaft 406 through the second flat key 409, and the rear half shaft 406 on the rear side of the flywheel 408 is provided with the nut 410 for locking; the axial directions of the front half shaft 405 and the rear half shaft 406 are fixed through a shaft shoulder screw 403, an axial oil passage 407 and a radial oil passage 411 are formed in the rear half shaft 406, and the axial oil passage 407 is communicated with the radial oil passage 411.

The front half shaft 405 is provided with a threaded hole and a key groove near the axis, is connected with and positioned on the rear half shaft 406 through a shoulder screw 403 and a first flat key 404, the front half shaft 405 is provided with a retainer ring groove for limiting the axial position of the front main bearing, and the rear half shaft 406 is provided with an axial oil passage 407 and a radial oil passage 411 for supplying lubricating oil to a needle roller bearing 807.

The main shaft assembly 4 is of a two-section type, the main shaft is divided into two ends at a bearing at the free end so as to be convenient to disassemble and assemble, flat keys are axially arranged on two half shafts so as to restrain the axial free end, a shoulder screw 403 is axially arranged so as to limit the axial free end and prevent the main shaft from being disengaged during operation, an eccentric shaft section is arranged on the main shaft so as to transmit mechanical energy during the operation of a rotor, a bearing retainer groove, a shoulder and the like are arranged at corresponding positions on the main shaft, an axial oil duct 407 and a radial oil duct 411 are arranged inside the main shaft so as to provide lubrication and cooling for the rotor bearing and an end cover bearing, front and rear balance weights are respectively arranged at two ends of the main shaft, wherein a balance weight driving end is integrated with a flywheel so as to balance the unbalance amount of the bearing and reduce the fluctuation rate of rotating speed.

Example 6

As shown in fig. 2, the fuel injector further comprises other accessories 8, which include a retainer 801, a ball bearing 802, spark plugs 803, a fuel injector 804, an internal gear 805, an exhaust manifold 806, a needle bearing 807, a fixing bolt 808, a positioning pin 809, an oil seal 810, an external gear 811, a first intake manifold 812 and a second intake manifold 813, wherein the retainer 801 is sleeved on the middle rear side of the rear half shaft 406 and is installed in a retainer groove 304, the ball bearing 802 is sleeved on the rear half shaft 406 on the right side of the retainer 801 and is installed in a bearing hole 305, the oil seal 810 is sleeved on the rear half shaft 406 on the right side of the ball bearing 802, the spark plugs 803 are three, the three spark plugs 803 are respectively installed on three side surfaces of the triangular cylinder body 106, the heads of the spark plugs 803 penetrate into the combustion chamber 103, the fuel injector 804 is installed at the fuel injector installation seat 203, the heads of the fuel injector 804 penetrate through the fuel injector installation hole 102 and the combustion chamber 103, the internal gear 805 is fixed on the inner end surface of the front end cover body 210 by the bolt and the gear 206, the external gear 811 is fixed on the front side of the external gear 501 by a spring pin 811, and is meshed with the external gear bolt hole 805; the number of the exhaust manifolds 806 is three, the three exhaust manifolds 806 are respectively installed at the exhaust holes 201, the needle bearings 807 are sleeved between the 8-shaped rotor 501 and the rear half shaft 406, the fixing bolts 808 sequentially penetrate through the front bolt holes 208, the bolt holes 109 and the rear bolt holes 307 to bolt and connect the front end cover assembly 2, the cylinder body assembly 1 and the rear end cover assembly 3, the positioning pins 809 sequentially penetrate through the front positioning pin holes 207, the positioning pin holes 105 and the rear positioning pin holes 308 to position the front end cover assembly 2, the cylinder body assembly 1 and the rear end cover assembly 3, the first air inlet header pipe 812 is connected with the second air inlet header pipe 813, and the other end of the second air inlet header pipe 813 is connected with the air inlet hole 301.

Two grooves on the left and right are arranged on two end faces of the 8-shaped rotor 501 for mounting end face sealing pieces 7 to avoid air leakage on the end face of a combustion chamber, and an air inlet and outlet port is arranged on the 8-shaped rotor 501 and is matched with two end covers to form a stable air inlet and outlet phase and an air inlet and outlet channel. The 8-shaped rotor 501 is provided with a positioning hole for mounting an external gear 811, and the external gear 811 is matched with the internal gear 805 for use so as to limit the motion law of the rotor.

Three exhaust manifolds 806, internal gear 805 and three fuel injectors 804 are integrally mounted on the front end cover body 210; the second intake manifold 813 is mounted on the rear head cover body 310 by bolts; an external gear 811 is fixed on the 8-shaped rotor 501 through a spring pin, an end face spring 701 and an end face sealing strip 702 are integrally installed on two end faces of the 8-shaped rotor 501, and the engine assembly assembles, couples and positions the cylinder body assembly 1, the front end cover assembly 2 and the rear end cover assembly 3 through a fixing bolt 808 and a positioning pin 809.

Example 7

As shown in fig. 2, the radial seal elements 6 are three groups, each radial seal element 6 includes a radial spring 601 and a radial seal strip 602, the radial springs 601 and the radial seal strips 602 are installed in the radial seal element installation groove 107, the radial seal strips 602 limit the radial springs 601 in the radial seal element installation groove 107, the end face seal elements 7 are two groups, each end face seal element 7 includes an end face spring 701 and an end face seal strip 702, the end face seal element installation grooves 502 are respectively formed in two end faces of the "8" -shaped rotor 501, the end face springs 701 and the end face seal strips 702 are installed in the end face seal element installation grooves 502, and the end face seal strips 702 limit the end face springs 701 in the end face seal element installation grooves 502.

The radial seal 6 and face seal 7 are used to seal the working chamber (the cavity formed by the cylinder/rotor and front and rear end caps) against combustion chamber blow-by.

As shown in fig. 3~7, the triangular cylinder body 106, the front end cap body 210, and the rear end cap body 310 are all similar triangular structures, each similar triangular structure is formed by connecting three long sides and three short sides at intervals, the center of the three long sides is provided with a front positioning pin hole 207, a positioning pin hole 105, or a rear positioning pin hole 308, the joint of the two adjacent sides is provided with a front bolt hole 208, a bolt hole 109, or a rear bolt hole 307, the three long sides of the triangular cylinder body 106 are respectively provided with a lubricating oil passage 101, and the three short sides of the triangular cylinder body 106 are respectively provided with a spark plug mounting hole for mounting a spark plug 803.

As shown in fig. 3, the three semicircular cavities 108 are formed by connecting three semicircular cavities, the top of each semicircular cavity is provided with a combustion chamber 103, and the joints of the three semicircular cavities are provided with radial sealing elements 6.

Example 8

The utility model discloses a novel rotor engine structure's operating method, including following step:

step 1: assembling the novel rotor engine structure, wherein combustion chambers 103 are respectively arranged at three tops of three semicircular cavities 108, each combustion chamber 103 is respectively provided with a spark plug 803 and an oil injector 804, the spark plugs 803 of the three combustion chambers 103 are ignited at intervals, the oil injectors 804 inject oil while igniting, the three semicircular cavities 108 are divided into three working chambers by 8-shaped rotors 501, when the combustion chamber 103 in one working chamber is ignited, one air inlet and one air outlet are formed in the other two working chambers;

step 2: when air is fed into the first air inlet header pipe 812, air is fed into an air inlet of the 8-shaped rotor 501 through the air inlet holes 301, the air is slowly rotated anticlockwise along with the 8-shaped rotor 501, at the moment, the first working chamber space is compressed, when the first working chamber space is compressed to the minimum, the air is ignited in the first combustion chamber 103 which is abutted against one end of the 8-shaped rotor 501, the air is rapidly expanded, the 8-shaped rotor 501 is pushed to rotate rapidly, an air outlet of the 8-shaped rotor 501 is communicated with the air outlet holes 201, and the air is discharged;

and step 3: then the air inlet of the rotating 8-shaped rotor 501 is communicated with the air inlet hole 301 for air inlet, the 8-shaped rotor 501 compresses the space of the second working chamber, when the space of the second working chamber is compressed to the minimum, the second combustion chamber 103 which is pressed against one end of the 8-shaped rotor 501 is ignited, the gas is rapidly expanded, the 8-shaped rotor 501 is pushed to rapidly rotate, the air outlet of the 8-shaped rotor 501 is communicated with the air outlet hole 201, and the gas is discharged;

and 4, step 4: then the air inlet of the rotating 8-shaped rotor 501 is communicated with the air inlet hole 301 for air inlet, the 8-shaped rotor 501 compresses the space of the third working chamber, when the space of the third working chamber is compressed to the minimum, the third combustion chamber 103 abutting against one end of the 8-shaped rotor 501 is ignited, the gas is rapidly expanded, the 8-shaped rotor 501 is pushed to rapidly rotate, the air outlet of the 8-shaped rotor 501 is communicated with the air outlet hole 201, and the gas is discharged;

and 5: with the rapid rotation of the 8-shaped rotor 501, the main shaft assembly 4 is driven to rotate rapidly, and since the internal gear 805 is fixed on the inner end face of the front end cover body 210 through the matching of the bolts and the gear bolt holes 206, the external gear 811 is sleeved on the front side of the rear half shaft 406, the external gear 811 is fixed on the 8-shaped rotor 501 through the spring pins, and the internal gear 805 is meshed with the external gear 811, the 8-shaped rotor 501 rotates 1 circle counterclockwise, and the main shaft assembly 4 rotates 2 circles clockwise.

Traditional rotor engine, the outer gear does not rotate and is fixed, and the inner gear is fixed in and rotates along with the rotor on the rotor, then:

w _{inner part} /w _{Outer cover} =2/3

（w _{Inner part} -w）/（w _{Outer cover} -w）=2/3

At this time w _{Outer cover} =0

w=3w _{Inner part}

Therefore, the eccentric shaft and the triangular rotor are in the same direction, the triangular rotor of the traditional rotor engine rotates 1 circle, and the eccentric shaft rotates 3 circles.

The utility model discloses the adjustment of internal and external gear, the outer gear is fixed in "8" style of calligraphy rotor through the spring catch, and the internal gear is fixed in on the front end housing body motionless, then:

w _{inner part} /w _{Outer cover} =2/3

（w _{Inner part} -w）/（w _{Outer cover} -w）=2/3

At this time w _{Inner part} =0

-w=2w _{Outer cover}

Therefore the utility model discloses "8" style of calligraphy rotor is reverse with the main shaft assembly, "8" style of calligraphy rotor anticlockwise rotation 1 circle, and the clockwise 2 circles that rotate of main shaft assembly can improve the torque characteristic of engine under the low-speed state, makes the engine possess great moment of torsion when the folk custom, further enlarges the range of application of engine.

The working principle of the utility model is as follows:

as shown in fig. 1 and 2, the utility model discloses a novel rotor engine structure, including cylinder body assembly 1, front end housing assembly 2, rear end housing assembly 3, main shaft assembly 4 and rotor assembly 5, cylinder body assembly 1, front end housing assembly 2 and rear end housing assembly 3 form the engine body with bolted connection, front centre bore 209 that front end housing assembly 2 was passed in proper order to main shaft assembly 4, "8" style of calligraphy rotor 501 center in cylinder body assembly 1 and rear end housing assembly 3's rear centre bore 309 to main shaft assembly 4 both ends are spacing, the utility model discloses a "8" style of calligraphy rotor 501 and three semicircle cavitys 108 cooperation, this cooperation form has increased the volume difference, has improved the compression ratio, has improved the thermal efficiency greatly, the utility model discloses engine moving part still less, especially radial seal 6 lubricated state obtains great improvement, radial seal 6 is converted into by the moving part, and this engine operation gas mixture realizes through rotor intake compression cylinder after the acting through the rotor exhaust waste gas, and the engine is compacter on the whole, and power density is bigger, has better dynamic property and economic nature and thermal efficiency.

The utility model discloses a novel rotary engine structure, similar inside and outside wankel rotary engine who swaps, its rotor are oval "8" style of calligraphy, and the cylinder body then is class triangle-shaped, and this cooperation form has increased the volume poor, can great range improve and compress and press the ratio, has improved the thermal efficiency greatly, the utility model discloses on the basis of inheriting traditional wanker rotary engine a plurality of advantages, the effectual shortcoming that the thermal efficiency that leads to is low that has solved traditional triangle-rotor engine and has compressed, it has more outstanding acting efficiency and little volume bigger power map down.

The utility model discloses the combustion chamber has been seted up respectively at three top of rotor engine's three semicircle cavitys, and every combustion chamber is provided with spark plug and sprayer respectively, and the spark plug interval of three combustion chamber is igniteed, sprayer when igniteing, and three combustion chamber interval is igniteed, avoids cylinder body local temperature too high, improves cylinder body thermal stress state, avoids the cylinder body part to lead to the fact the cylinder body sealed not tight because of heat altered shape is too big, the power decline phenomenon appears, improves engine life.

The utility model discloses the inner gear is fixed in the terminal surface in the front end housing body through bolt and gear bolt hole cooperation, and on the outer gear was fixed in "8" style of calligraphy rotor through the spring catch, inner gear and external gear meshing, its gear ratio was 3:2, therefore, the 8-shaped rotor rotates 1 circle anticlockwise, the main shaft assembly rotates 2 circles clockwise, and the low-speed torque characteristic of the engine is improved.

The utility model discloses rotary engine includes oval "8" style of calligraphy rotor and class triangle-shaped cylinder body, and the engine motion part still less, especially radial seal spare lubricated state obtains great improvement, replaces the radial seal spare of three semicircle cavitys departments with the sealing member at traditional triangle-shaped rotor top, changes the moving part into the mounting to independently lubricate radial seal spare, possess better dynamic nature and economic nature and reliability when making its operation, have very big latent quality in the aspect of the application of aviation system.

The utility model discloses rotor engine air intake compression cylinder through "8" style of calligraphy rotor when operation gas mixture realizes through "8" style of calligraphy rotor exhaust waste gas after the acting, and the engine is compacter on the whole, and power density is bigger, has better dynamic nature and economic nature and thermal efficiency.

Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, and that the scope of the invention is defined by the appended claims.

Claims (9)

1. A novel rotary engine structure is characterized in that: the engine comprises a cylinder body assembly (1), a front end cover assembly (2), a rear end cover assembly (3), a main shaft assembly (4) and a rotor assembly (5), wherein the cylinder body assembly (1), the front end cover assembly (2) and the rear end cover assembly (3) are of a triangle-like structure, a three-semicircle cavity (108) is formed in the center of the cylinder body assembly (1), radial sealing elements (6) are respectively arranged at the joints of three semicircles of the three-semicircle cavity (108), a front center hole (209) is formed in the center of the front end cover assembly (2), a rear center hole (309) is formed in the center of the rear end cover assembly (3), the front center hole (209), the three-semicircle cavity (108) and the rear center hole (309) are coaxially arranged, the cylinder body assembly (1), the front end cover assembly (2) and the rear end cover assembly (3) are fixedly connected to form an engine body, the rotor assembly (5) comprises an 8-shaped rotor (501), end face sealing elements (7) are respectively arranged on two end faces of the 8-shaped rotor (501), the 8-shaped rotor (501) is arranged in the three-semicircle cavity (108), the main shaft assembly (4) sequentially penetrates through the center holes (209) and the front end cover assembly (3) and the rear end cover assembly (309), and the two ends of the main shaft assembly (4) are limited.

2. A novel rotary engine structure according to claim 1, characterized in that: the cylinder body assembly (1) comprises a lubricating oil channel (101), an oil sprayer mounting hole (102), a combustion chamber (103), a cooling water cavity (104), a positioning pin hole (105), a triangular cylinder body (106), a radial sealing element mounting groove (107) and a bolt hole (109), wherein the center of the triangular cylinder body (106) is provided with three semicircular cavities (108), the three tops of the three semicircular cavities (108) are respectively provided with the combustion chamber (103), one side of the combustion chamber (103), which is close to a front end cover assembly (2), is provided with the oil sprayer mounting hole (102), the three semicircular joints of the three semicircular cavities (108) are respectively provided with the radial sealing element mounting groove (107), radial sealing elements (6) are mounted in the radial sealing element mounting groove (107), the three outer walls of the triangular cylinder body (106) are provided with the lubricating oil channel (101), the lubricating oil channel (101) is communicated with the radial sealing element mounting groove (107), the triangular cylinder body (106) at the periphery of the three semicircular cavities (108) is uniformly distributed with the cooling water cavities (104), and the positioning pin hole (105) and the bolt hole (109) are uniformly distributed at the edge of the triangular cylinder body (106).

3. A novel rotary engine structure according to claim 2, characterized in that: the front end cover assembly (2) comprises an exhaust hole (201), a front lubricating oil outer hole (202), an oil injector mounting seat (203), a front cooling water cavity (204), a front lubricating oil inner hole (205), a gear bolt hole (206), a front positioning pin hole (207), a front bolt hole (208), a front central hole (209) and a front end cover body (210), wherein a central hole (209) is formed in the center of the front end cover body (210), the gear bolt hole (206) is circumferentially distributed on the inner side of the central hole (209), three exhaust holes (201) are uniformly distributed on the front end cover body (210) at the periphery of the front central hole (209), when an 8-shaped rotor (501) rotates to the phase position of the exhaust hole (201), the air outlet of the 8-shaped rotor (501) is communicated with the exhaust holes (201), three oil injector mounting seats (203) are uniformly distributed at the edge of the front end cover body (210), the three oil injector mounting seats (203) correspond to the positions of the three oil injector mounting holes (102), the front end cover body (210) is provided with the front lubricating oil outer hole (202), the front end surface of the front end cover body (210) is distributed with the lubricating oil outer hole (205), the lubricating oil sealing element (205) and the position of the front end surface of the lubricating oil injector inner hole (205) is communicated with the front end surface (205), the inner end face of the front end cover body (210) is further provided with a front cooling water cavity (204), the front cooling water cavity (204) corresponds to the cooling water cavity (104), the edge of the front end cover body (210) is uniformly provided with front positioning pin holes (207) and front bolt holes (208), the front positioning pin holes (207) correspond to the positioning pin holes (105), and the front bolt holes (208) correspond to the bolt holes (109).

4. A novel rotary engine structure according to claim 3, characterized in that: the rear end cover assembly (3) comprises air inlets (301), a rear cooling water cavity (302), a rear lubricating oil inner hole (303), a retainer ring groove (304), a bearing hole (305), a rear lubricating oil outer hole (306), a rear bolt hole (307), a rear positioning pin hole (308), a rear central hole (309) and a rear end cover body (310), wherein a rear central hole (309) is formed in the center of the rear end cover body (310), the retainer ring groove (304) and the bearing hole (305) are formed in the inner ring of the rear central hole (309), three air inlets (301) are uniformly distributed in the rear end cover body (310) on the periphery of the rear central hole (309), and when the 8-shaped rotor (501) rotates to the phase position of the air inlets (301), the air inlets of the 8-shaped rotor (501) are communicated with the air inlets (301); the rear end cover comprises a rear end cover body (310), wherein a rear cooling water cavity (302) is distributed on the inner end face of the rear end cover body (310), the rear cooling water cavity (302) corresponds to the cooling water cavity (104), a rear lubricating oil inner hole (303) is further distributed on the inner end face of the rear end cover body (310), rear lubricating oil outer holes (306) are uniformly distributed on the outer end face of the rear end cover body (310), the rear lubricating oil outer holes (306) are communicated with the rear lubricating oil inner hole (303), rear bolt holes (307) and rear positioning pin holes (308) are uniformly distributed on the edge of the rear end cover body (310), the rear bolt holes (307) correspond to the bolt holes (109), and the rear positioning pin holes (308) correspond to the positioning pin holes (105).

5. The novel rotary engine structure as claimed in claim 4, wherein: the main shaft assembly (4) comprises a front balance weight (401), a compression nut (402), a first flat key (404), a front half shaft (405), a rear half shaft (406), a flywheel (408), a second flat key (409) and a nut (410), wherein the front balance weight (401) is sleeved on the front side of the front half shaft (405), the compression nut (402) is sleeved on the front half shaft (405) on the front side of the front balance weight (401) to compress the front balance weight (401), the rear side of the front half shaft (405) is connected with the front side of the rear half shaft (406) through the first flat key (404) in a key mode, the flywheel (408) is sleeved on the rear side of the rear half shaft (406), the flywheel (408) is connected with the rear half shaft (406) through the second flat key (409), and the rear half shaft (406) on the rear side of the flywheel (408) is provided with the nut (410) for locking; the axial of preceding semi-axis (405) and back semi-axis (406) still passes through shaft shoulder screw (403) and fixes, axial oil duct (407) and radial oil duct (411) have been seted up to back semi-axis (406) inside, and axial oil duct (407) and radial oil duct (411) communicate.

6. A novel rotary engine structure according to claim 5, wherein: the fuel injector further comprises other accessories (8), wherein the other accessories comprise check rings (801), ball bearings (802), spark plugs (803), a fuel injector (804), an internal gear (805), an exhaust manifold (806), needle bearings (807), fixing bolts (808), positioning pins (809), oil seals (810), an external gear (811), a first air inlet manifold (812) and a second air inlet manifold (813), the check rings (801) are sleeved on the middle rear side of a rear half shaft (406) and are arranged in check ring grooves (304), the ball bearings (802) are sleeved on the rear half shaft (406) on the right side of the check ring (801) and are arranged in bearing holes (305), the oil seals (810) are sleeved on the rear half shaft (406) on the right side of the ball bearings (802), the spark plugs (803) are three, the three spark plugs (803) are respectively arranged on the three side surfaces of the triangular cylinder body (106), the heads of the spark plugs (803) penetrate into a combustion chamber (103), the oil injectors (804) are arranged at a fuel injector mounting seat (203), the heads of the internal gear of the fuel injector penetrate through mounting holes (102) to penetrate into the combustion chamber (103), and are matched with a front end cover bolt hole (210) and are arranged on the front end cover (811), the external gear (811) is fixed on the 8-shaped rotor (501) through a spring pin, and the internal gear (805) is meshed with the external gear (811); the three exhaust manifolds (806) are respectively arranged at the exhaust holes (201), the needle bearings (807) are sleeved between the 8-shaped rotor (501) and the rear half shaft (406), the radial oil duct (411) corresponds to the needle bearings (807), the fixing bolts (808) sequentially penetrate through the front bolt holes (208), the bolt holes (109) and the rear bolt holes (307) to connect the front end cover assembly (2), the cylinder body assembly (1) and the rear end cover assembly (3) in a bolt mode, the positioning pins (809) sequentially penetrate through the front positioning pin holes (207), the positioning pin holes (105) and the rear positioning pin holes (308) to position the front end cover assembly (2), the cylinder body assembly (1) and the rear end cover assembly (3), the first air inlet main pipe (812) is connected with the second air inlet main pipe (813), and the other ends of the second air inlet main pipes (813) are connected with the air inlet holes (301).

7. The novel rotary engine structure as claimed in claim 6, wherein: the radial sealing elements (6) are three groups, each radial sealing element (6) comprises a radial spring (601) and a radial sealing strip (602), the radial springs (601) and the radial sealing strips (602) are installed in the radial sealing element installation groove (107), the radial sealing strips (602) limit the radial springs (601) in the radial sealing element installation grooves (107), the end face sealing elements (7) are two groups, each end face sealing element (7) comprises an end face spring (701) and an end face sealing strip (702), the two end faces of the 8-shaped rotor (501) are respectively provided with the end face sealing element installation grooves (502), the end face springs (701) and the end face sealing strips (702) are installed in the end face sealing element installation grooves (502), and the end face sealing strips (702) limit the end face springs (701) in the end face sealing element installation grooves (502).

8. A novel rotary engine structure according to claim 7, characterized in that: triangle-shaped cylinder body (106), front end housing body (210) and rear end housing body (310) are class triangle-shaped structure, and class triangle-shaped structure is formed by three long limits and three minor faces interval connection, and preceding location pinhole (207) or location pinhole (105) or back location pinhole (308) have been seted up at three long limit centers, and adjacent both sides meet and have seted up preceding bolt hole (208) or bolt hole (109) or back bolt hole (307), lubricating oil duct (101) have been seted up respectively on three long limits of triangle-shaped cylinder body (106), have seted up the spark plug mounting hole respectively on three minor faces of triangle-shaped cylinder body (106) for installation spark plug (803).

9. A novel rotary engine structure according to claim 8, characterized in that: the three semicircular cavities (108) are formed by connecting three semicircular cavities, the top parts of the three semicircular cavities are respectively provided with a combustion chamber (103), and the joints of the three semicircular cavities are respectively provided with a radial sealing element (6).

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