Starting mechanism of sliding vane rotor internal combustion engine
By introducing a guide rail and pin structure into the starting mechanism of the vane rotor internal combustion engine, the vane is forced to contact the stator wall to form a seal, which solves the problem of difficult starting of the vane rotor internal combustion engine, realizes reliable ignition at low speed and simplifies the starting process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-12
- Publication Date
- 2026-04-07
AI Technical Summary
The vane rotor internal combustion engine has insufficient sealing performance and poor starting performance under low-speed conditions. The traditional starter motor has insufficient torque and cannot overcome the static friction resistance between the vane and the cylinder. Poor lubrication during cold start leads to starting difficulties.
In the starting mechanism of a vane rotor internal combustion engine, a starting guide rail is opened on the inside of the end cover, and pins are embedded at both ends of the vane. The guide rail and pin structure forces the vane to contact the stator wall during the starting phase to form a seal. The lubrication supply unit and ignition timing controller are integrated to achieve multi-parameter coordination.
It significantly improves the starting performance of the vane rotor internal combustion engine, enabling reliable ignition at lower starting speeds, simplifying the starting process, and improving starting reliability and efficiency.
Smart Images
Figure CN121803328A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of internal combustion engines, and particularly relates to a starting mechanism of a sliding vane rotor internal combustion engine. BACKGROUND
[0002] Current mainstream internal combustion engine technologies include reciprocating piston four-stroke / two-stroke and rotor types such as Wankel triangular piston two-stroke. The reciprocating piston internal combustion engine technology is mature, but has problems such as low motion conversion efficiency, large vibration and noise, complex structure, and the like, which needs to convert reciprocating motion into rotary motion through a crankshaft. In comparison, the rotor internal combustion engine such as the triangular piston type has the advantages of high power density, smooth operation, and small volume due to direct output shaft power, but is limited by the following defects: first, the manufacturing process is complex, the rotor profile sealing requirement is extremely high, and precision machining is required, which is costly; second, the starting performance is poor, the combustion is insufficient under low-speed working conditions, and an additional auxiliary device such as a preheating plug is required for cold start; third, the fuel utilization rate is low, the mixed gas flow is insufficient due to the shape of the combustion chamber, and the thermal efficiency is lower than that of the piston internal combustion engine.
[0003] The sliding vane rotor internal combustion engine realizes the volume change of the working chamber through the cooperation of the radial sliding vane and the eccentric rotor, and has the advantages of simple structure, fewer parts, smooth operation, and the like, but the sealing between the sliding vane and the cylinder body is insufficient at low speed, and the compression ratio is difficult to maintain; the torque of the traditional starting motor is insufficient, and cannot overcome the static friction resistance between the sliding vane and the cylinder body; the lubrication is poor during cold start, and the friction loss is aggravated. The combustion chamber pressure fluctuates greatly at low speed, resulting in unstable torque output; the spring response of the sliding vane rebound mechanism is delayed, affecting the dynamic sealing effect.
[0004] The existing rotor internal combustion engine starting scheme such as auxiliary motor driving is difficult to be directly applied to the sliding vane type structure, because the contact pressure between the sliding vane and the cylinder body needs to be ensured during the starting stage, and the traditional motor cannot balance the torque and the speed; the oil film is not fully formed at low speed, and the wear risk is aggravated; the existing technology focuses on the triangular piston rotor, and there is almost no starting optimization scheme for the sliding vane rotor. SUMMARY
[0005] The present application aims to provide a sliding vane rotor internal combustion engine starting mechanism, which applies controllable pressing force to the sliding vane through a radial force applying unit during the starting stage, so that the sliding vane maintains contact with the inner wall of the stator, to overcome the sealing failure problem caused by insufficient centrifugal force under low-speed working conditions; at the same time, a lubrication supply unit and an ignition timing controller are integrated, to realize the multi-parameter cooperation of compression, ignition, and lubrication, and finally achieve efficient and reliable starting.
[0006] The purpose of the present application is achieved by the following technical scheme: A starting mechanism for a sliding vane rotor internal combustion engine, comprising two end covers 1, a plurality of sliding vanes 2, a stator 4, and a rotor 5; The stator 4 is a hollow cylindrical structure, and a smooth continuous guide surface is arranged on the inner wall surface of the stator 4 along the circumference, and the stator 4 is sequentially arranged with an intake section, a compression section, a working section and an exhaust section to form a four-stroke working section; The rotor 5 is arranged concentrically with the stator 4, and the axial thickness is consistent. The rotor 5 is provided with uniformly distributed slide grooves. The slide 2 is installed in the slide groove, and the slide 2 can move radially freely during the rotation of the rotor 5. The two end covers 1 are respectively arranged on the front and rear end surfaces of the stator 4. During the rotation of the rotor 5, the top end of the slide 2 is always in contact with the inner wall of the stator 4 under the action of centrifugal force. Any two adjacent slides 2, the stator 4, the rotor 5 and the front and rear end covers 1 together form a closed chamber. The closed chamber can complete the intake, compression, working and exhaust processes when passing through the intake section, the compression section, the working section and the exhaust section of the inner wall of the stator 4. A groove is arranged on the inner side of each of the two end covers 1 for a guide rail 6. Pin holes are arranged on the front and rear axial end surfaces of the slide 2. An embedded pin 3 is arranged in the pin hole. The axial length of the embedded pin 3 matches the sum of the depth of the pin hole and the depth of the groove of the end cover 1. The embedded pin 3 can move along the guide rail 6 during the rotation of the rotor 5.
[0007] Further, one or a plurality of four-stroke working sections are arranged continuously according to actual requirements.
[0008] Further, pin holes are arranged on the front and rear axial end surfaces of the slide 2 near the radial center.
[0009] Further, the position of the pin hole is at the radial center of the slide 2, and the up and down floating cannot exceed 1 / 3 of the radial height of the slide 2.
[0010] Further, the embedded pin 3 moves along the guide rail 6 during the rotation of the rotor 5. The movement track of the embedded pin 3 is the shape of the guide rail 6.
[0011] Further, the guide rail 6 includes a lower limit edge 7 and an upper limit edge 8, and a part of the guide rail 6 is left as redundancy in equal proportion, so that the embedded pin 3 can move freely in the guide rail 6. The guide rail 6 has the lower limit edge 7 and the upper limit edge 8. The distance between the two limit edges is greater than the diameter of the embedded pin 3 to form a gap fit, so that the embedded pin 3 can move freely along the guide rail in a limited range.
[0012] Further, the profile curvature radius of the lower limit edge 7 of the guide rail is less than or equal to the minimum curvature radius of the movement track of the top end of the slide 2, so that the lower limit edge 7 forcibly pushes the slide 2 to extend radially and contact the inner wall of the stator 4 when the rotor 5 starts. The profile curvature radius of the upper limit edge 8 of the guide rail is greater than the maximum curvature radius of the movement track of the top end of the embedded pin 3, so as to limit the excessive retraction of the slide 2.
[0013] Compared with the prior art, the present application has the following advantages: The present application provides a starting mechanism for a sliding vane rotor internal combustion engine, which solves the problem of difficult starting of the internal combustion engine. A groove is formed in the inner side of the end cover as a starting guide rail, and a pin hole is formed at a specific position at the axial end of the sliding vane, and a pin is embedded in the hole, which cooperates with the pin hole and the depth of the guide rail, and the pin moves along the starting guide rail when the rotor rotates. The present application uses a simple guide rail and pin structure to force the sliding vane to contact the stator wall to form a seal during the starting stage, significantly improving the starting performance of the sliding vane rotor internal combustion engine, enabling it to reliably ignite at a lower starting speed, and simplifying the starting process. BRIEF DESCRIPTION OF DRAWINGS
[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.
[0015] Figure 1 Figure 1 is a structural schematic diagram of the starting mechanism of the sliding vane rotor internal combustion engine of the present application.
[0016] Figure 2 Figure 2 is a structural schematic diagram of the starting guide rail of the present application.
[0017] Figure 3 Figure 3 is a schematic diagram of the upper and lower limit edges of the starting guide rail of the present application.
[0018] In the figure, 1. end cover; 2. sliding vane; 3. embedded pin; 4. stator; 5. rotor; 6. starting guide rail; 7. lower limit edge of guide rail; 8. upper limit edge of guide rail. DETAILED DESCRIPTION
[0019] The present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, and not to limit the present application. In addition, it should be noted that only the parts related to the present application are shown in the drawings for ease of description, rather than all the structures.
[0020] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0021] The sliding vane cannot effectively contact the stator wall when the sliding vane rotor internal combustion engine is started at a low speed and the centrifugal force is insufficient, which leads to sealing failure and normal ignition start. Therefore, the application provides a starting mechanism for a sliding vane rotor internal combustion engine, as shown in Figure 1 The starting mechanism comprises two end covers 1, a plurality of sliding vanes 2, a stator 4 and a rotor 5.
[0022] The stator 4 is a hollow cylindrical structure, the inner surface of which is provided with a smooth continuous guide surface of a required shape along the circumference, and sequentially arranged with an intake section, a compression section, a working section and an exhaust section, which form a four-stroke working section. According to actual requirements, one or a plurality of four-stroke working sections can be arranged in series.
[0023] The rotor 5 is arranged concentrically with the stator 4, and the axial front and rear planes of the stator 4 and the rotor 5 coincide. The rotor 5 is provided with uniformly distributed sliding vane grooves. The sliding vane 2 is installed inside the sliding vane groove, and the sliding vane 2 can move radially freely during the rotation of the rotor 5.
[0024] The two end covers 1 are respectively installed on the front and rear end faces of the stator 4. During the rotation of the rotor 5, the top end of the sliding vane 2 is always in contact with the inner wall of the stator 4 under the action of the centrifugal force. Any two adjacent sliding vanes 2, the stator 4, the rotor 5 and the front and rear end covers 1 together form a closed chamber. When the closed chamber passes through the intake section, the compression section, the working section and the exhaust section of the inner ring of the stator 4, the intake, compression, working and exhaust processes can be completed.
[0025] A groove is formed on the inner side of each of the two end covers 1 as a starting guide rail 6, as shown in Figure 2 The axial front and rear end faces of the sliding vane 2 are provided with two pin holes at specific positions, preferably near the radial center. The pin holes are embedded with an embedded pin 3 matched with the depth of the pin hole and the depth of the groove.
[0026] In some other embodiments of the application, one or a plurality of four-stroke working sections can be arranged in series according to actual requirements.
[0027] In some other embodiments of the application, the axial front and rear end faces of the sliding vane 2 are provided with pin holes near the radial center.
[0028] In some other embodiments of the application, the pin hole position should be at the radial center position of the sliding vane 2, and the up and down floating should not exceed 1 / 3 of the radial height of the sliding vane 2.
[0029] In some other embodiments of the application, the embedded pin 3 moves along the starting guide rail 6 during the rotation of the rotor 5, and the motion trajectory of the embedded pin 3 is the shape of the starting guide rail 6.
[0030] In some embodiments of the present application, the starting guide rail 6 includes a lower limit edge 7 and an upper limit edge 8, and has a certain proportion of redundancy to allow the embedded pin 3 to move freely in the starting guide rail 6. The starting guide rail 6 has a lower limit edge 7 and an upper limit edge 8, and the distance between the two limit edges is greater than the diameter of the embedded pin 3 to form a clearance fit, so that the embedded pin 3 can move freely along the guide rail within a limited range.
[0031] In some embodiments of the present application, the starting guide rail lower limit edge 7 can support the top end of the sliding sheet 2 in contact with the inner wall of the stator 4, and the upper limit edge 8 of the guide rail is larger than the top end trajectory of the embedded pin 3. The profile curvature radius of the starting guide rail lower limit edge 7 is less than or equal to the minimum curvature radius of the top end motion trajectory of the sliding sheet 2, so that when the rotor 5 starts, the lower limit edge 7 forces the sliding sheet 2 to extend radially and contact the inner wall of the stator 4; the profile curvature radius of the upper limit edge 8 of the guide rail is greater than the maximum curvature radius of the top end motion trajectory of the embedded pin 3, limiting the excessive retraction of the sliding sheet 2.
[0032] The starting guide rail 6 includes a lower limit edge 7 and an upper limit edge 8, and has a certain proportion of redundancy to ensure that the embedded pin 3 can move freely in the starting guide rail 6. The embedded pin 3 moves along the starting guide rail 6 when the rotor 5 rotates, that is, the motion trajectory of the embedded pin 3 is the shape of the starting guide rail 6. The lower limit edge 7 of the starting guide rail needs to be able to support the top end of the sliding sheet 2 in contact with the inner wall of the stator 4; the upper limit edge 8 of the guide rail needs to be slightly larger than the top end trajectory of the embedded pin 3.
[0033] In the starting process of the sliding vane rotor internal combustion engine, if there is no starting guide rail 6, the sliding sheet 2 cannot contact the stator 4 to achieve effective sealing; the starting device needs to drive the sliding vane rotor internal combustion engine to increase the speed to the allowed starting speed, and then oil injection and ignition can be performed to complete the starting process. After the addition of the starting guide rail 6 of the present application, as shown in Figure 3 The lower limit edge 7 of the guide rail needs to be able to support the top end of the sliding sheet 2 in contact with the inner wall of the stator 4. At this time, direct oil injection and ignition can be performed to complete the starting process. At the same time, considering the influence of heat and sliding sheet 2 wear particles, it is necessary to ensure that the starting guide rail 6 does not affect the free extension of the sliding sheet 2. Therefore, as shown in Figure 3 The upper limit edge 8 of the guide rail needs to be slightly larger than the top end trajectory of the embedded pin 3.
[0034] The present application sets up a simple guide rail and pin structure to force the sliding sheet to contact the stator wall to form a seal during the starting stage, significantly improving the starting performance of the sliding vane rotor internal combustion engine, allowing it to reliably ignite at a lower starting speed, and simplifying the starting process.
[0035] The above merely describes preferred embodiments of the present application, and any simple modification, equivalent change and modification made to the above embodiments by any person skilled in the art without departing from the technical solution of the present application, and according to the technical essence of the present application, still belong to the scope of the technical solution of the present application.
Claims
1. A starting mechanism for a vane rotor internal combustion engine, characterized in that: It includes two end caps (1), multiple sliding vanes (2), a stator (4) and a rotor (5); The stator (4) is a hollow columnar structure. Its inner ring surface is provided with a smooth, continuous, and guideable curved surface along the circumference, and four stroke sections are arranged in sequence: intake section, compression section, power section and exhaust section. The four stroke sections constitute a set of four-stroke working sections. The rotor (5) and stator (4) are arranged concentrically with the same axial thickness. The rotor (5) has evenly distributed sliding grooves. The sliding plate (2) is installed inside the sliding groove and can move freely radially during the rotation of the rotor (5). Two end caps (1) are respectively installed on the front and rear end faces of the stator (4); during the rotation of the rotor (5), the top of the sliding vane (2) is always in contact with the inner wall of the stator (4) under the action of centrifugal force, and any two adjacent sliding vanes (2), together with the stator (4), the rotor (5) and the front and rear end caps (1), form a closed chamber; the closed chamber can complete the intake, compression, power and exhaust processes when passing through the intake section, compression section, power section and exhaust section of the inner ring of the stator (4); A groove is opened on the inner side of both end caps (1) as a starting guide rail (6); pin holes are opened on the front and rear end faces of the sliding plate (2), and an embedded pin (3) is embedded in the pin hole. The axial length of the embedded pin (3) matches the sum of the pin hole depth and the groove depth of the end cap (1). The embedded pin (3) can move along the starting guide rail (6) when the rotor (5) rotates.
2. The starting mechanism for a sliding vane rotor internal combustion engine according to claim 1, characterized in that: Set up one or more sets of four-stroke working sections in a continuous arrangement according to actual needs.
3. The starting mechanism for a sliding vane rotor internal combustion engine according to claim 1, characterized in that: The pin holes are opened near the radial center of the front and rear end faces of the slider (2). The pin hole positions should be located at the radial center of the slider (2), and the vertical fluctuation should not exceed 1 / 3 of the radial height of the slider (2).
4. The starting mechanism for a sliding vane rotor internal combustion engine according to claim 1, characterized in that: The embedded pin (3) moves along the starting guide rail (6) when the rotor (5) rotates, and the movement trajectory of the embedded pin (3) is the shape of the starting guide rail (6).
5. A starting mechanism for a sliding vane rotor internal combustion engine according to claim 4, characterized in that: The starting guide rail (6) has a lower limit edge (7) and an upper limit edge (8). The distance between the two limit edges is larger than the diameter of the embedded pin (3) to form a clearance fit, so that the embedded pin (3) can move freely along the guide rail axis within the limited range of the starting guide rail (6).
6. A starting mechanism for a sliding vane rotor internal combustion engine according to claim 5, characterized in that: The radius of curvature of the lower limit edge (7) of the starting guide rail is less than or equal to the minimum radius of curvature of the top movement trajectory of the slide (2), so that when the rotor (5) starts, the lower limit edge (7) forces the slide (2) to extend radially and contact the inner wall of the stator (4); the radius of curvature of the upper limit edge (8) of the guide rail is greater than the maximum radius of curvature of the top movement trajectory of the embedded pin (3), thus limiting the excessive retraction of the slide (2).