WO2021213258A1 - 一种高密封性的类椭圆转子发动机 - Google Patents
一种高密封性的类椭圆转子发动机 Download PDFInfo
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- WO2021213258A1 WO2021213258A1 PCT/CN2021/087709 CN2021087709W WO2021213258A1 WO 2021213258 A1 WO2021213258 A1 WO 2021213258A1 CN 2021087709 W CN2021087709 W CN 2021087709W WO 2021213258 A1 WO2021213258 A1 WO 2021213258A1
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- rotor
- sealing
- engine
- sealing pin
- pin
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- 238000007789 sealing Methods 0.000 title claims abstract description 141
- 238000002485 combustion reaction Methods 0.000 claims abstract description 56
- 238000002955 isolation Methods 0.000 claims abstract description 44
- 230000033001 locomotion Effects 0.000 claims abstract description 24
- 238000002347 injection Methods 0.000 claims abstract description 11
- 239000007924 injection Substances 0.000 claims abstract description 11
- 230000007704 transition Effects 0.000 claims abstract description 7
- 230000008859 change Effects 0.000 claims description 14
- 239000000446 fuel Substances 0.000 claims description 10
- 230000009471 action Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 9
- 238000013461 design Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000003754 machining Methods 0.000 abstract description 4
- 239000002737 fuel gas Substances 0.000 abstract 1
- 239000000295 fuel oil Substances 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 12
- 239000000243 solution Substances 0.000 description 9
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 230000008034 disappearance Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
- F02B53/10—Fuel supply; Introducing fuel to combustion space
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
- F02B53/12—Ignition
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B55/00—Internal-combustion aspects of rotary pistons; Outer members for co-operation with rotary pistons
- F02B55/02—Pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B55/00—Internal-combustion aspects of rotary pistons; Outer members for co-operation with rotary pistons
- F02B55/08—Outer members for co-operation with rotary pistons; Casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B55/00—Internal-combustion aspects of rotary pistons; Outer members for co-operation with rotary pistons
- F02B55/14—Shapes or constructions of combustion chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F11/00—Arrangements of sealings in combustion engines
- F02F11/007—Arrangements of sealings in combustion engines involving rotary applications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- the invention belongs to the technical field of engines, and in particular relates to an elliptical rotary engine with improved sealing performance.
- the rotary engine is a novel internal combustion engine that appeared in the 1950s. Compared with the general reciprocating piston internal combustion engine, the rotary engine has the advantages of small size, high power-to-weight ratio, and lower vibration and noise. Among them, the triangular rotor engine is a more commonly used scheme.
- the engine is also called Wankel engine. It uses the double-arc outer trochoidal line as the cylinder block profile and its inner envelope line as the rotor profile line. Engagement drives the rotor to make planetary motions around the cylinder, and it is a four-stroke engine.
- the three protruding points on the triangular rotor of the traditional triangular rotor engine will always rotate at a high speed while keeping close to the cylinder wall.
- the sealing pin on this part is prone to severe abrasion.
- the wear of the seal pin will result in the inability to effectively isolate the adjacent cylinder blocks, which will easily lead to the difference between adjacent cylinder blocks of the engine.
- the design of the rotor and cylinder block profile of the Wankel engine is more complicated, and the allowable machining error margin is also small, which also greatly increases the machining difficulty in actual production.
- LiquidPiston has proposed another rotary engine solution, also known as the X engine. Its overall structure is similar to that of a Wankel engine that is reversed inside and outside.
- the double-arc outer trochoidal line is used as the rotor profile and the outer winding line is used as the cylinder block. According to the design of the profile line, the two still ensure the planetary movement of the rotor through gear meshing.
- the X engine redesigned the rotor profile and cylinder block profile of the rotary engine from the perspective of internal and external adjustments. However, this scheme only exchanged the internal and external order of the rotor profile and the cylinder block profile, and failed to change the structure and the profile of the profile itself. Movement characteristics. Therefore, this solution still has problems such as severe seal wear, gas leakage in the cylinder, and high processing costs.
- the present invention proposes a highly sealed elliptical rotary engine which is different from the existing rotary engine.
- the engine has a new engine profile and proposes a new engine sealing method based on the profile change.
- the rotary engine proposed by the present invention has better space sealing performance, can better prevent the engine structure from wearing out, and effectively reduce the gas leakage between adjacent combustion cylinders.
- the cylinder block profile and the rotor profile are simpler and easier to process, which greatly reduces the processing cost of the engine.
- the specific technical scheme of the present invention is as follows:
- An elliptical-like rotor engine with high sealing performance characterized in that the engine includes an upper end cover, a lower end cover, a rotor, three combustion chambers, three isolation belts, a fuel injection ignition device, a sealing pin row and an eccentric drive shaft, in,
- the upper end cover and the lower end cover are connected by screws to form a cylinder block of the engine;
- the hollow cavity inside the cylinder is a working cavity for engine operation, used for the rotation of the rotor and the thermal cycle of the three combustion chambers, and the working state in the working cavity is determined by the cylinder profile and The rotor profile is determined;
- the overall contour of the cylinder block profile is triangular, and three protruding inner cavities are evenly distributed around the cylinder block to form the three combustion chambers.
- the cylinder block profile is formed by the three combustion chamber wall curves and The three-section isolation belt curve is formed, and the wall surface curves of the three combustion chambers and the three-section isolation belt curve are alternately distributed around the cylinder body so that the cylinder body profile is 120-degree rotationally symmetrical;
- the overall profile of the rotor is oval-like, the central cavity of the rotor, the central cavity of the upper end cover and the central cavity of the lower end cover are connected by the eccentric drive shaft; the tops of the three combustion chambers are all installed with
- the fuel injection ignition device is used for fuel injection and ignition;
- the eccentric drive shaft and the cylinder block shape restrict the rotor to make planetary gear movement.
- the rotor rotates to form a compression-expansion periodic movement in the three combustion chambers.
- Each rotation of the rotor, a compression-expansion motion cycle is performed twice to form a separate thermal cycle in the three combustion chambers and drive the rotor to rotate together, and output useful work to the outside through the eccentric drive shaft;
- a sealing pin row consisting of at least four sealing pins is arranged equidistantly on the three-section isolation belt, the sealing pins are installed in the pin holes on the three-section isolation belt, and sliding grooves are installed on the inner walls of the pin holes,
- the sealing pin can slide through the sliding groove, and the sliding range is limited by the stopper at the end of the sliding groove, the bottom of the sealing pin is connected with the bottom of the pin hole by a spring, and the head is equipped with an arc-shaped sliding sealing sheet During the rotation of the rotor, the sealing pin row maintains constant contact with the side wall of the rotor, and the areas on both sides of the sealing pin row are stably sealed and isolated by the sliding sealing sheet.
- the three-section isolation belt curves are all circular arc curves, and the parameter equation is:
- the three-stage combustion chamber wall curve has a smooth transition at the intersection with the three-stage isolation belt curve, and the parameter equation of the three-stage combustion chamber wall curve is:
- ⁇ is the change parameter, and the value range is and Respectively are the three-stage combustion chamber wall curve;
- ⁇ is the change parameter, the value range is [0, 2 ⁇ ], and ⁇ is the rotation angle of the rotor;
- the seal pin On the line of action of the seal pin, the distance between the intersection of the cylinder profile and the line of action of the seal pin and the intersection of the rotor profile and the line of action of the seal pin is the seal The effective distance between the pin and the rotor; if the distance between the rotor and the seal pin is less than the effective distance, the seal pin contacts the side of the rotor, and the seal pin is in a sealed state; If the distance between the rotor and the sealing pin is greater than the effective distance, the sealing pin does not contact the side of the rotor, and the sealing pin is in an idle state.
- the rotor curve and cylinder profile proposed in the present invention adopt a smooth arc that smoothly transitions from the contour line of the combustion chamber to isolate adjacent cylinders to ensure that the rotor movement is planetary gear movement, regardless of the rotation angle of the rotor ,
- the rotor and the cylinder block are kept tangent, and the tangent point must fall on the curve of the isolation belt.
- the rotation of the engine rotor will also be more stable, which improves the operation of the engine Characteristic, it can better prevent the structure abrasion effect; the structure abrasion effect produced by the high-speed rotation of the rotor will also be greatly reduced.
- the engine sealing method proposed by the present invention in which the sealing pin rows are arranged on the smooth arcs at all the boundaries can effectively improve the sealing performance of the engine and prevent gas leakage between adjacent cylinders; the increase in the number of sealing pins, the cylinder The coupling error margin between the body and the rotor also becomes larger, which can further reduce the processing cost of the engine.
- the elliptic curve-like shape of the rotor proposed in the present invention can effectively reduce the difficulty of structural processing and reduce the production cost of the engine.
- Figure 1 is a schematic view of the structure of the upper end cover of the engine of the present invention.
- FIG. 2 is a schematic diagram of the structure of the lower end cover and rotor of the engine of the present invention
- Figure 3 is a schematic view of the structure of the engine isolation belt and the sealing pin row of the present invention.
- FIG. 4 is a schematic diagram of the structure of the engine sealing pin of the present invention.
- Fig. 5 is a diagram showing the variation of the distance between the sealing pin and the rotor with the rotation angle in a single rotation period of the present invention
- Fig. 6(a)- Fig. 6(h) are schematic diagrams of the sealing principle of the sealing pin row at different stages of the engine of the present invention.
- an elliptical-like rotor engine with high airtightness includes an upper end cover 1, a lower end cover 2, a rotor 3, three combustion chambers 4, a three-section isolation belt 6, a fuel injection ignition device 5, and a seal Pin row 7 and eccentric drive shaft 8, of which,
- the upper end cover 1 and the lower end cover 2 are connected by screws 9 to form the cylinder block of the engine;
- the hollow cavity inside the cylinder block is the working cavity used for engine operation, which is used for the rotation of the rotor 3 and the thermal cycle of the three combustion chambers 4.
- the working state in the working cavity is determined by the cylinder block profile and the rotor 3 profile;
- the overall contour of the cylinder block profile is triangular, and three protruding inner cavities are evenly distributed around the cylinder block to form three combustion chambers 4.
- the cylinder block profile is composed of three combustion chambers 4 wall curves and three isolation belts 6 curves It is composed of three combustion chambers 4 wall surface curves and three sections of isolation belt 6 curves staggered around the cylinder body, making the cylinder body profile 120 degree rotationally symmetrical;
- the overall contour of the rotor 3 is elliptical.
- the central cavity of the rotor 3 is connected with the central cavity of the upper end cover 1 and the central cavity of the lower end cover 2 through an eccentric drive shaft 8;
- the eccentric drive shaft 8 and the cylinder block shape restrict the rotor 3 to make planetary gear movement.
- the rotor 3 rotates to form a compression-expansion cyclical movement in the three combustion chambers 4.
- Each revolution of the rotor 3 compresses- Expansion motion cycles twice, and the fuel injection ignition device 5 injects and ignites the interior of the three combustion chambers 4 at the end of the compression phase.
- This thermal cycle process forms a separate thermal cycle in the three combustion chambers 4 and drives them together.
- the rotor 3 rotates and outputs useful work to the outside through the eccentric drive shaft 8;
- the sealing pin rows 7 composed of at least four sealing pins are arranged equidistantly on the three-section isolating belt 6.
- the sealing pins are installed in the pin holes on the three-section isolating belt 6, and the inner wall of the pin hole is equipped with a sliding groove 10, and the sealing pin It can slide through the sliding groove 10, and the sliding range is limited by the stopper at the end of the sliding groove 10.
- the bottom of the sealing pin is connected to the bottom of the pin hole through a spring 11, and the length of the spring 11 directly affects the size and scope of the sealing pin.
- the parts are equipped with arc-shaped sliding sealing sheets 12.
- the 6 curves of the three isolation belts are all circular arc curves, and the parameter equation is:
- the wall surface curve of the three-stage combustion chamber 4 has a smooth transition at the intersection with the curve of the three-stage isolation zone 6 and the parameter equation of the wall surface curve of the three-stage combustion chamber 4 is:
- ⁇ is the change parameter, and the value range is and Respectively are three-stage combustion chamber 4 wall surface curves;
- ⁇ is the change parameter, the value range is [0, 2 ⁇ ], and ⁇ is the rotation angle of the rotor 3;
- the present invention modifies the cylinder block profile and the rotor curve, so that the original boundary point that divides the adjacent combustion chamber wall curve is expanded into a certain length of arc-shaped isolation belt, and the rotor curve
- the original double-arc outer trochoid is improved to an elliptical curve. This improvement can greatly reduce the difficulty of machining the engine rotor and reduce the processing cost of the cylinder block profile and the rotor profile.
- the engine equidistantly arranges the sealing pin rows 7 composed of at least four sealing pins on the three-section isolation belt 6, and the rotor 3 rotates During the process, the sealing pin row 7 keeps constant contact with the side wall of the rotor 3, and the areas on both sides of the sealing pin row 7 are stably sealed and isolated by sliding the sealing sheet 12 to reduce the flow leakage between adjacent combustion chambers. Ensure that each combustion chamber has a good seal.
- the distance between the intersection of the cylinder block profile and the seal pin action line and the intersection of the rotor 3 profile and the seal pin action line is the effective distance between the seal pin and the rotor 3; If the distance between the seal pin and the rotor 3 is less than the effective distance, the seal pin contacts the side of the rotor 3, and the seal pin is in a sealed state; if the distance between the rotor 3 and the seal pin is greater than the effective distance, the seal pin does not contact the side of the rotor 3, and the seal pin is in an idle state .
- the present invention proposes a highly sealed elliptical rotor engine, and proposes a new design plan for the rotor and cylinder block profile, and introduces it on this basis
- the sealing pin array seals the transition area between different combustion cylinders.
- the present invention proposes a new rotor profile and cylinder profile.
- the scheme proposed by the present invention uses a smooth arc that smoothly transitions to the contour of the combustion chamber to isolate adjacent cylinder blocks.
- the improved scheme can still ensure that the rotor movement mode is planetary gear movement, and no matter what angle the rotor rotates, the rotor and the cylinder remain tangent, and the tangent point must fall on the curve of the isolation belt. Taking into account the disappearance of the demarcation point on the cylinder block profile, the rotation of the engine rotor is more stable, and the structural wear effect caused by the high-speed rotation of the rotor will also be greatly reduced.
- the present invention proposes a new engine sealing method based on the profile change.
- the engine proposed in the present invention arranges a sealing pin row composed of a plurality of sealing pins on the smooth arcs of all the boundaries, by ensuring that multiple sealings are performed during the rotation of the rotor
- the joint action of the pins extends the length of the pressure difference between adjacent combustion cylinders, reduces the pressure gradient in the leakage passage, and effectively reduces the gas leakage between the cylinders.
- the sealing pin row arranged on the smooth arc should ensure that no matter when the rotor rotates to any position, at least two sliding sealing pins in the sealing pin row are in a sealed state. Considering that when the sealing pin row has only two sliding sealing pins, the two sealing pins are staggered to seal, which is similar to the effect of a single sealing pin; when the sealing pin row has only three sliding sealing pins, the middle sealing pin is permanently sealed, and both sides The sealing pins are staggered and sealed, and there is no difference from a single sealing pin. Considering the above factors, the number of sealing pins included in the sealing pin row arranged on the smooth arc should be greater than or equal to 4 to meet the requirements of the present invention.
- the present invention proposes a new rotor curve.
- the elliptic curve-like shape used in the present invention is simpler, and the processing difficulty is less, and the processing cost is lower. , More suitable for large-scale industrial production.
- the coupling error margin between the cylinder block and the rotor also increases, thereby further reducing the processing cost of the engine.
- a sealing pin row 7 composed of 4 sealing pins is arranged longitudinally on the isolation belt 6, and the sealing pin rows 7 are arranged equidistantly along the longitudinal direction.
- the sealing pin rows 7 are arranged according to the longitudinal coordinate size. They are the sealing pins 7.1-7.4 respectively.
- Figure 5 since the distance between each sealing pin and the rotor 3 is different when the rotor 3 is in a different position, it is considered that the distance between each sealing pin and the rotor 3 during one cycle of the rotor 3 is rotated.
- the distance change, the first four curves in the figure represent the change curve of the distance between the sealing pin 7.1-7.4 and the rotor 3 with the rotation angle of the rotor 3 (hereinafter referred to as the sealing pin 7.1-7.4 distance curve), the fifth curve represents the four seals
- the effective distance of the pin hereinafter referred to as the effective distance curve of the seal pin.
- the rotation angle of the rotor 3 corresponding to stage A is -2° to 2°. It can be seen from Figure 5 that the sealing pins 7.2 and 7.3 are in the sealed state, while the sealing pins 7.1 and 7.4 are in the idle state.
- the specific physical image of the sealing pin row As shown in Figure 6a, the rotor 3 and the cylinder wall are sealed by sealing pins 7.2 and 7.3. As the rotor 3 continues to rotate, the distance between the sealing pin 7.4 and the rotor 3 begins to decrease, until the rotor 3 rotates to 3 degrees, the sealing pin 7.4 contacts the side wall of the rotor 3 and begins to enter the sealing state.
- sealing pin 7.2 is in contact with the side wall of the rotor 3 again, and the rotor 3 rotates into the D stage, as shown in Figure 6d, the rotor 3 and the cylinder
- the body wall is sealed by sealing pins 7.2-7.4.
- the distance between the sealing pin 7.1 and the rotor 3 is rapidly reduced until the sealing pin 7.1 enters the sealed state when it is turned to 87 degrees. Sealing with the cylinder wall, the rotor 3 rotates into the E stage, as shown in Fig. 6e.
- the present invention increases the length of the pressure difference between adjacent combustion chambers by at least one time. It can be reasonably inferred from this that the pressure gradient in the leakage channel of the technical solution of the present invention is at most 1/2 of the pressure gradient of the original solution.
- the gas leakage of the solution of the present invention is only Half of the original plan is even smaller, and it has better sealing performance than the original plan.
- the coupling support between the engine rotor and the cylinder block is improved from three separate sealing pins to three sets of sealing pin rows, considering the increase in the number of sealing pins, the coupling error margin between the cylinder block and the rotor is indirectly increased. It can further reduce the processing difficulty and processing cost of the engine, and is more suitable for large-scale industrial production.
- the terms “installed”, “connected”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. , Or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components.
- installed can be a fixed connection or a detachable connection. , Or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components.
- the "above” or “below” of the first feature of the second feature may include direct contact between the first and second features, or may include the first and second features Not in direct contact but through other features between them.
- “above”, “above”, and “above” the first feature of the second feature include the first feature being directly above and obliquely above the second feature, or it simply means that the first feature is higher in level than the second feature.
- the features “below”, below”, and “below” the second feature include the first feature directly below and obliquely below the second feature, or simply indicate that the first feature has a lower level than the second feature.
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Abstract
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Claims (2)
- 一种高密封性的类椭圆转子发动机,其特征在于,所述发动机包括上端盖(1)、下端盖(2),转子(3),三个燃烧腔(4),三段隔离带(6),喷油点火装置(5)、密封销列(7)和偏心驱动轴(8),其中,所述上端盖(1)和所述下端盖(2)通过螺钉(9)相连接,构成发动机的缸体;所述缸体内部的中空腔为用于发动机工作的工作腔,用于所述转子(3)的转动与所述三个燃烧腔(4)的热力循环,所述工作腔内的工作状态由缸体型线与所述转子(3)型线决定;所述缸体型线整体轮廓呈三角型,三个突出的内凹腔环绕缸体一周均匀分布,构成所述三个燃烧腔(4),所述缸体型线由所述三个燃烧腔(4)壁面曲线与所述三段隔离带(6)曲线构成,所述三个燃烧腔(4)壁面曲线和所述三段隔离带(6)曲线环所述绕缸体一周交错分布,使所述缸体型线呈120度旋转对称;所述转子(3)整体轮廓呈类椭圆型,所述转子(3)的中心空洞与所述上端盖(1)的中心空洞和所述下端盖(2)的中心空洞通过所述偏心驱动轴(8)连接;所述三个燃烧腔(4)顶部均安装所述喷油点火装置(5),用于喷油与点火;发动机工作时通过所述偏心驱动轴(8)和所述缸体型线限制约束所述转子(3)做行星齿轮运动,所述转子(3)旋转,在所述三个燃烧腔(4)内形成压缩-扩张的周期性运动,所述转子(3)每转一周,压缩-扩张运动循环两次,在所述三个燃烧腔(4)内形成单独的热力循环并共同驱动所述转子(3)旋转,通过所述偏心驱动轴(8)对外输出有用功;在所述三段隔离带(6)上等距排列由至少四个密封销构成的密封销列(7),所述密封销安装于所述三段隔离带(6)上的销孔内,销孔内壁上安装有滑槽(10),所述密封销能够通过所述滑槽(10)滑动,并通过所述滑槽(10)尽头的挡块限制滑动范围,所述密封销底部通过弹簧(11)与销孔底部相连,头部均装有弧形的滑动密封片(12),所述转子(3)转动过程中,所述密封销列(7)与所述转子(3)侧壁保持恒定接触,并通过所述滑动密封片(12)对所述密封销列(7)两侧的区域进行稳定密封与隔离;所述三段隔离带(6)曲线均为圆弧曲线,参数方程为:其中,m为隔离带编号,取值范围为1~3,分别表示三段隔离带曲线;t为变化参数,取值范围为[-1.0,1.0];k为缸体形状系数,取值范围为10.0~12.0;e为偏心驱动轴上偏心柱 的偏心距,取值范围为0.005m~0.007m;q为三段隔离带形状参数,表征隔离带曲率半径与偏心驱动轴上偏心柱的偏心距之间的比值,取值范围为3.0~6.0;所述三段燃烧腔(4)壁面曲线在与所述三段隔离带(6)曲线相交处均为光滑过渡,所述三段燃烧腔(4)壁面曲线的参数方程为:与所述缸体型线相对应,所述转子(3)曲线的参数方程为:其中,α为变化参数,取值范围为[0,2π],β为转子(3)转动角度;当所述转子(3)沿上述方程的规律旋转时,其运动为行星齿轮运动,无论所述转子(3)旋转至何角度,所述转子(3)曲线与所述缸体型线均保持相切状态,且相切点恒落于所述三段隔离带(6)曲线上各一个,相邻燃烧腔(4)通过落在其中间的隔离带(6)上的相切点互相隔离。
- 根据权利要求1所述的一种高密封性的类椭圆转子发动机,其特征在于,在所述密封销作用线上,所述缸体型线与所述密封销作用线的交点和所述转子(3)型线与所述密封销作用线的交点之间的距离为所述密封销与所述转子(3)之间的距离;若所述转子(3)与所述密封销的距离小于密封销有效距离,则所述密封销与所述转子(3)侧面接触,所述密封销处于密封状态;若所述转子(3)与所述密封销的距离大于密封销有效距离,则所述密封销与所述转子(3)侧面不接触,所述密封销处于闲置状态。
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