WO2022105099A1 - Motocyclette et son moteur - Google Patents

Motocyclette et son moteur Download PDF

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Publication number
WO2022105099A1
WO2022105099A1 PCT/CN2021/086910 CN2021086910W WO2022105099A1 WO 2022105099 A1 WO2022105099 A1 WO 2022105099A1 CN 2021086910 W CN2021086910 W CN 2021086910W WO 2022105099 A1 WO2022105099 A1 WO 2022105099A1
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WO
WIPO (PCT)
Prior art keywords
gear
engine
oil
motorcycle according
ring
Prior art date
Application number
PCT/CN2021/086910
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English (en)
Chinese (zh)
Inventor
朱长钦
杨志球
杜琳琳
鞠树利
舒桂明
邹文学
Original Assignee
浙江春风动力股份有限公司
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Application filed by 浙江春风动力股份有限公司 filed Critical 浙江春风动力股份有限公司
Publication of WO2022105099A1 publication Critical patent/WO2022105099A1/fr

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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
    • F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
    • F02B61/06—Combinations of engines with mechanical gearing
    • 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 present application belongs to the technical field of motorcycles, and in particular relates to an engine and a motorcycle using the engine.
  • the engine is the heart of the whole motorcycle. During the development of the motorcycle from the first stage to the fourth stage, the motorcycle engine has been continuously improved, and its performance has been continuously improved. Different motorcycle engines, the engines are classified.
  • the engine is divided into gasoline engine and diesel engine.
  • An internal combustion engine that uses gasoline as fuel is called a gasoline engine; an internal combustion engine that uses a diesel engine as fuel is called a diesel engine.
  • gasoline engines have their own characteristics; gasoline engines have high speed, low quality, low noise, easy starting, and low manufacturing costs; diesel engines have large compression ratios, high thermal efficiency, and better economic performance and emission performance than gasoline engines.
  • the engine to complete a working cycle it can be divided into a four-stroke engine and a two-stroke engine.
  • the crankshaft is rotated twice (720°)
  • the piston reciprocates up and down in the cylinder for four strokes, and an internal combustion engine that completes one working cycle is called a four-stroke engine; while the crankshaft is rotated once (360°), the piston reciprocates up and down in the cylinder.
  • An engine that moves two strokes and completes one working cycle is called a two-stroke engine.
  • the different cooling methods of the engine can be divided into water-cooled engine and air-cooled engine.
  • the water-cooled engine uses the cooling liquid circulating in the cylinder block and the cylinder head cooling water jacket as the cooling medium for cooling; while the air-cooled engine uses the air flowing between the cylinder block and the fins on the outer surface of the cylinder head as the cooling medium For cooling; the water-cooled engine has uniform cooling, reliable operation and good cooling effect.
  • the number of cylinders on the engine it is divided into single-cylinder engine and multi-cylinder engine.
  • An engine with only one cylinder is called a single-cylinder engine; an engine with two or more cylinders is called a multi-cylinder engine.
  • engine cylinders According to the different arrangement of engine cylinders, it can be divided into single row type and double row type.
  • the cylinders of the single-row engine are arranged in a row, generally arranged vertically, but in order to reduce the height, the cylinders are sometimes arranged inclined or even horizontally; the double-row engine arranges the cylinders in two rows, and the clamps between the two rows
  • a balance shaft that rotates synchronously with the crankshaft is generally installed in the existing engine, and the engine can obtain a good balance effect and reduce the vibration of the engine by generating a reverse vibration force when the balance shaft rotates.
  • the balance shaft on the car engine is a metal shaft with two eccentric bumps.
  • the length of the balance shaft is relatively long and the diameter of the shaft is large.
  • the balance shaft occupies a large space, and further There are limitations when installing this balancer shaft, which can only be installed at the bottom of the engine.
  • the present application provides a motorcycle and its engine with reduced vibration and compact structure.
  • a motorcycle includes a frame welded from metal pipes and plates, front wheels, rear wheels, fuel system, body cover, engine, suspension system, etc.
  • the suspension system includes a front suspension and a rear suspension, the front suspension is engaged at the front of the frame, and the front suspension is associated with the front wheels.
  • a rear suspension is engaged at the rear of the frame, and the rear suspension is associated with the rear wheels.
  • a fuel system is provided on the frame, and the fuel system is used to supply fuel to the engine.
  • the engine of the motorcycle drives the sprocket on the hub of the rear wheel to rotate through the chain, and then drives the rear wheel to rotate, and then the rear wheel pushes the motorcycle forward.
  • the engine is supported in the middle of the frame and in a lower position, and the engine is fixed on the frame through a shaft. At least one of the front or rear wheels is drivingly coupled to the engine, the engine including a crankshaft, a connecting rod, a piston coupled to the crankshaft through the connecting rod, a balance device associated with the crankshaft, and a water pump associated with the crankshaft device.
  • the balancing device includes a first balance shaft assembly that rotates synchronously with the crankshaft to generate a counter-vibration force that counteracts the vibration of the crankshaft and/or the piston during operation, and a first balance shaft assembly that rotates synchronously with the crankshaft to offset the vibration of the crankshaft and/or the piston during operation
  • the second balance shaft assembly of the opposite vibration force, the first balance shaft assembly is located on one side of the engine, and the second balance shaft assembly is located on the other side of the engine.
  • the first balance shaft assembly includes a first shaft body, a first gear with a circle center and a first balance block, the first shaft body is arranged along the width direction of the motorcycle, and the first gear is integrated in the first shaft. body, and the first balance weight is integrated on the first gear.
  • the second balance shaft assembly includes a second shaft body, a second gear with a circle center and a second balance block, the second shaft body is arranged along the width direction of the motorcycle, and the second teeth are integrated in the second shaft. body, and the second balance weight is integrated on the second gear.
  • the distance from the edge of the first balance block close to the gear teeth to the center of the first gear is smaller than the distance from the tooth root of the first gear to the center of the first gear.
  • the distance from the edge of the second balance block close to the gear teeth to the center of the second gear is smaller than the distance from the tooth root of the second gear to the center of the second gear.
  • a plurality of first weight reduction holes are provided on the first gear at a position avoiding the first balance block.
  • a plurality of second weight reduction holes are provided on the second gear at a position avoiding the second balance block.
  • the water pump device is located on one side of the engine, and the water pump device includes a water pump and a liquid outlet with an opening direction facing the water pump, the water pump is connected to the first balance shaft assembly; and the first balance shaft assembly There is a lubricating oil flow cavity, an oil inlet hole communicating with the lubricating oil flow cavity, and an oil outlet hole communicating with the lubricating oil flow cavity, and the distance from the oil outlet hole to the water pump is close to the distance from the oil inlet hole to the water pump.
  • a sleeve is sleeved on the first shaft body, a sealing ring is sleeved on the corresponding sleeve, and at least two sealing parts contacting the sleeve are provided on the sealing ring.
  • the sealing ring includes an outer sealing ring, a middle sealing ring and an inner sealing ring, and the cross-sectional shape formed by the outer sealing ring, the middle sealing ring and the inner sealing ring is roughly "I" shape, and the sealing part Set on the inner seal ring.
  • the cross-sectional shape of the inner sealing ring is "W" shape.
  • a wear-resistant coating is provided on the sleeve.
  • the length of the axis in the height direction of the piston is L ⁇
  • the diameter of the section of the piston is L ⁇ , where the ratio of L ⁇ to L ⁇ is 0.30-0.40:1.0.
  • two pin hubs with pin holes are arranged in the middle of the piston, reinforcing ribs are arranged between the two pin hubs, and lubricating oil holes are formed on the reinforcing ribs by cutting.
  • the piston includes a piston head and a piston skirt integrated with the piston head, and a connecting rib connected to the piston skirt is provided on the pin boss.
  • the piston is provided with an air ring groove and an oil ring groove with oil holes from top to bottom, an oil ring is sleeved on the oil ring groove, and the inner wall of the oil ring is recessed outward to form a accommodating cavity, A support spring is arranged in the accommodating cavity.
  • the outer wall of the oil ring is partially convex to form two oil scraping convex rings with a distance, and a plurality of oil inlet holes are opened between the two oil scraping convex rings.
  • a diamond-like coating is provided on the outer wall of the oil ring.
  • the engine further includes a magneto
  • the magneto includes a magneto rotor and a flywheel associated with the magneto rotor
  • the flywheel has a flywheel core sleeved on one end of the crankshaft, and the flywheel core passes through the fixing bolts fixed on the crankshaft.
  • the end of the crankshaft close to the flywheel has a first connecting section and a second connecting section associated with the flywheel core, and the thickness of the first connecting section is greater than that of the second connecting section;
  • the crankshaft is provided with a blind hole,
  • An inner thread is provided on the inner wall of the blind hole corresponding to the first connecting section, and the thread of the fixing bolt is engaged with the inner thread on the inner wall of the blind hole.
  • the fixing bolt includes a bolt rod and a bolt head integrated with the bolt rod, the bolt rod is provided with a threaded section and a smooth section, and the side wall of the smooth section corresponds to the blind hole of the second connecting section. There is no force between the inner walls.
  • the end of the flywheel core away from the crankshaft extends toward the center of the flywheel core to form a bent portion associated with the fixing bolt.
  • the engine further includes an air intake system and an oil-gas separator having an air intake pipe and an air outlet pipe
  • the air intake system includes an air filter box, an air filter element disposed in the air filter box, and an air inlet located in the air filter box.
  • the engine air intake pipe in the filter box, the outlet of the air outlet pipe of the oil-gas separator corresponds to the air inlet of the engine air intake pipe.
  • the oil and gas separator is arranged on the air filter box, and the outlet of the air outlet pipe of the oil and gas separator is arranged in the air filter box.
  • the air filter box includes a box body and a box cover connected to the box body, the box cover is provided with an installation position, and the oil and gas separator is fixed in the installation position.
  • a positioning groove communicated with the installation position is provided on the box cover, and the air outlet pipe of the oil and gas separator is provided on the positioning groove.
  • the oil-gas separator is provided with a plurality of slow-flow chambers that are connected to form a labyrinth structure.
  • the plurality of slow-flow chambers are respectively: a first chamber, a second chamber adjacent to the first chamber, a third chamber adjacent to the second chamber, and a third chamber adjacent to the second chamber
  • the air inlet pipe communicates with the first chamber
  • the air outlet pipe communicates with the fourth chamber.
  • the air intake pipe is located at the lowest position of the first chamber.
  • the oil and gas separator includes a box body and a box cover connected with the box body to close the inner space of the box body, and the box body is provided with a box body bottom wall with an inclined surface and a box body side with an inclined arc surface.
  • One end of the air inlet pipe is connected with the bottom wall of the box body.
  • the box is provided with a first partition extending from the side wall of the box to the bottom wall of the box, and the side wall of the first partition first extends along the width of the box and then turns along the length of the box.
  • a second partition extending to the bottom of the box body and a third partition dividing the space surrounded by the first partition and the second partition into two communicating spaces.
  • the engine further includes an engine casing, the engine casing includes a casing, a noise reduction plate connected to the casing, and a compression bolt connecting the casing and the noise reduction plate.
  • the noise reduction plate is fixed on the casing by pressing bolts, and the pressing bolts are connected to the casing.
  • a shock-absorbing pad is fixed on the noise reduction plate, and the shock-absorbing pad is in contact with the casing.
  • a spacer connected to the noise reduction plate is sleeved on the pressing bolt.
  • the housing is provided with a plurality of positioning columns, and the noise reduction plate is provided with positioning holes sleeved on the positioning columns.
  • the positioning holes are arranged on the noise reduction plate along the circumferential direction of the noise reduction plate, and the positioning holes are U-shaped holes.
  • the noise reduction plate is provided with a plurality of weight reduction holes, and the weight reduction through holes are arranged at equal intervals along the circumferential direction of the noise reduction plate.
  • the inner wall of the casing is provided with a support boss, and the noise reduction plate is connected to the support boss.
  • the engine further includes a shift component
  • the shift component includes a ring gear with gear teeth, a gear seat concentric with the ring gear, and a damping leaf spring, and the damping leaf spring is partially in contact with the ring gear, The other part is in contact with the gear seat; the gear seat rotates relative to the ring gear, and when the gear seat rotates relative to the ring gear, the damping plate spring is deformed by pressure to exert resistance on the gear seat.
  • the gear seat is provided with a plurality of anti-rotation grooves at equal intervals along the circumferential direction of the ring gear.
  • the inner wall of the ring gear is provided with a groove portion
  • the gear seat is provided with a accommodating groove corresponding to the groove portion
  • the damping plate spring is arranged in the accommodating groove
  • the two parts of the damping plate spring are provided. The ends are respectively in contact with the two inner walls of the groove.
  • the length of the groove portion along the circumferential direction of the ring gear is smaller than the length of the damping leaf spring in a flattened state.
  • the gear ring is provided with a first anti-rotation block
  • the gear seat is provided with a second anti-rotation block.
  • the gear seat squeezes the leaf spring and deforms to the first stop.
  • the rotating block is in contact with the second rotating block.
  • the section of the damping leaf spring is arched.
  • a disengagement prevention ring piece corresponding to the side wall and the damping leaf spring is fixed by screws.
  • the engine further includes a shift hub with a plurality of shift grooves and a hall sensor communicatively connected to the instrument panel, and the shift drum is provided with induction magnets corresponding to the hall sensors and having a spacing.
  • the shift drum is provided with a bayonet, and the induction magnet is partially inserted into the bayonet.
  • the inner wall of the bayonet is provided with anti-rotation bumps
  • the induction magnet is provided with anti-rotation openings associated with the anti-rotation bumps.
  • the induction magnet is provided with a raised portion, and the diameter of the raised portion is larger than the diameter of the bayonet.
  • the first balance shaft assembly and the second balance shaft assembly can be installed in different positions of the engine according to the needs.
  • the installation positions of the balance shaft are diverse, and the space occupied on the engine is small, so that the engine structure is compact, and the structure of the motorcycle is compact. When driving, the wind resistance is low and the controllability is good.
  • the first balance shaft assembly and the second balance shaft assembly are separately arranged on the left and right sides of the engine.
  • the two balance shaft assemblies can offset the vibration of the two pistons on the engine separately, reduce the engine vibration and improve the comfort of the motorcycle.
  • the coolant impinges on the water pump, forming a lateral thrust on the water pump towards the first shaft body.
  • the lubricating oil on the upper body of the first shaft exerts a thrust towards the first shaft body in the direction of the water pump. The two thrusts cancel each other out, and the first shaft The body will not be laterally offset on the engine, ensuring the stability of the balance shaft assembly on the engine.
  • FIG. 1 is a left side view of the motorcycle driven by the engine of the application.
  • FIG. 2 is a perspective view of the engine of the application.
  • FIG. 3 is a perspective view of the engine of FIG. 2 from another perspective.
  • FIG. 4 is a perspective view of the crankshaft associated with the balancer in FIG. 2 .
  • FIG. 5 is a perspective view of another form of the balancing device in FIG. 2 .
  • FIG. 6 is a perspective view of the balancing device in FIG. 2 having only one balancing shaft passing through the engine.
  • FIG. 7 is an exploded view of the water pump device and the first balance shaft assembly in FIG. 2 .
  • FIG. 8 is a perspective view of the water pump and the first balance shaft assembly in FIG. 2 associated with each other.
  • FIG. 9 is a cross-sectional view of the water pump and the first balance shaft assembly in FIG. 2 associated with each other.
  • FIG. 10 is a perspective view of the sealing ring in FIG. 7 .
  • FIG. 11 is a cross-sectional view of the sealing ring of FIG. 7 .
  • FIG. 12 is a front view of the piston and connecting rod of FIG. 1 .
  • FIG. 13 is an exploded view of FIG. 12 with the piston pin installed.
  • FIG. 14 is a perspective view of the rotor and the crankshaft in FIG. 1 .
  • FIG. 15 is a cross-sectional view at C-C in FIG. 14 .
  • FIG. 16 is an enlarged view of B in FIG. 15 .
  • FIG. 17 is an exploded view of FIG. 15 .
  • FIG. 18 is a perspective view of the hollow filter box of FIG. 1 .
  • Figure 19 is an exploded view of the oil and gas separator in 18.
  • FIG. 20 is a cross-sectional view of FIG. 18 .
  • FIG. 21 is an exploded view of FIG. 18 .
  • FIG. 22 is a perspective view of the shift gear of FIG. 1 .
  • FIG. 23 is an exploded view of the shift gear of FIG. 21 .
  • FIG. 24 is a front view of another shift gear shown in FIG. 23 .
  • FIG. 25 is an exploded view of the shift gear in FIG. 24 using a shock-absorbing spring.
  • FIG. 26 is a perspective view of the engine casing of FIG. 1 .
  • FIG. 27 is a cross-sectional view of FIG. 26 .
  • FIG. 28 is an exploded view of FIG. 26 .
  • FIG. 29 is a perspective view of the oil pump gear in FIG. 1 .
  • FIG. 30 is a perspective view of the Hall sensor and the shift hub in FIG. 1 .
  • FIG. 31 is a cross-sectional view of the Hall sensor associated with the shift hub in FIG. 1 .
  • FIG. 32 is an exploded view of the Hall sensor and shift hub of FIG. 1 .
  • Dynamic refers to the relative action between two parts, that is, one of the parts does not move, and the other part rotates or translates relative to each other; sealing refers to the contact between the two parts, air, liquid and other media cannot pass from the contact point of the two parts. Therefore, dynamic sealing means that between two parts that can rotate or move relative to each other, after contacting each other, liquid and/or gas still cannot pass through.
  • Coolant is an indispensable working medium to ensure the normal operation of a water-cooled engine. It is used to circulate and flow to absorb temperature under the pumping of a water pump. At present, the conventional coolant is mostly water.
  • Transverse in this application is specifically along the length of the crankshaft.
  • the axial pressure refers to the pressure formed along the longitudinal direction of the shaft, and the direction of the force is parallel to the longitudinal direction of the shaft.
  • the surface of the wall has no obvious protrusions and threads; for example, the unthreaded part of the bolt shank of the bolt, or the inner wall of the blind hole has no thread, and only has no thread or no protrusion, the wall surface is smooth.
  • FIG. 1 is a left side view showing a motorcycle 10 driven by an engine 16 according to an embodiment of the present application.
  • a motorcycle 10 includes a frame 11 welded from metal pipes and plates, front wheels 12 , rear wheels 13 , a fuel system 14 , a body cover 15 , an engine 16 , a controller 17 , a dashboard 18 and Suspension system 19 etc.
  • the motorcycle 10 is a large-displacement two-wheel fuel motorcycle.
  • the motorcycle can also be a four-wheel off-road motorcycle.
  • the suspension system 19 includes a front suspension 191 and a rear suspension 192 , which are engaged at the front of the frame 11 , the front suspension 191 being associated with the front wheels 12 .
  • a rear suspension is engaged at the rear of the frame 11 , and the rear suspension is associated with the rear wheels 13 .
  • a fuel system 14 is provided on the vehicle frame 11 , and the fuel system 14 is used to supply fuel to the engine 16 .
  • the engine 16 of the motorcycle 10 drives the sprocket 1311 on the hub 131 of the rear wheel 13 to rotate through a chain (not shown), and then drives the rear wheel 13 to rotate, and then the rear wheel 13 pushes the motorcycle 10 forward.
  • the engine 16 is supported in the middle of the frame 11 at a lower position, and the engine 16 is fixed to the frame 11 by bolts.
  • FIG. 2 is a perspective view showing the engine 16 of the present invention viewed from the front right of 7 , and the engine casing on the right side is not shown in this figure.
  • FIG. 3 is a perspective view showing the engine 16 of the present invention viewed from the left front, and the engine casing on the left side is not shown in this figure.
  • a combustion chamber (not shown) is provided on the engine 16 , and the fuel of the fuel system 14 enters the combustion chamber along the pipeline, and is then ignited by the spark plug (not shown) of the engine 16 Fuel, the fuel generates kinetic energy in the combustion chamber that pushes the piston 40 downward to power the motorcycle 10 .
  • the engine 16 includes a cylinder block 161 , a cylinder head 162 , a cylinder head cover 163 , a crankcase 164 , a water pump device 30 , a crankshaft 60 , a balance device 20 , a piston 40 and an intake system 73 .
  • FIG. 4 shows a perspective view associated with the crankshaft 60 and the balancer 20 in the engine 10 of FIG. 2 .
  • the balancing device 20 is actually one or two balancing shafts that rotate synchronously with the crankshaft 60 .
  • the reverse vibration force generated by the balancing device 20 during rotation is used to obtain a good balance of the engine. As a result, the vibration of the engine 16 is reduced.
  • the balance device 20 has the following components: a first balance shaft assembly 21 offset on the right side of the engine 16 and a second balance shaft assembly 22 offset on the left side of the engine 16 .
  • the first balance shaft assembly 21 and the second balance shaft assembly 22 are not required to be symmetrically arranged on the engine 16 , and are mainly realized according to the positions of the center of mass of the first balance shaft assembly 21 and the center of mass of the second balance shaft assembly 22 on the engine 16 .
  • the balance of the engine 16 reduces the vibration of the engine 16 .
  • the first balance shaft assembly 21 and the second balance shaft assembly 22 are installed in different positions of the engine 16, the installation positions of the first balance shaft assembly 21 and the second balance shaft assembly 22 are diverse, and the space occupied on the engine 16 is small, The structure of the engine 16 of the motorcycle 10 is made compact.
  • the first balance shaft assembly 21 is linked with the right end of the crankshaft 60 through gears or sprockets.
  • the first balance shaft assembly 21 includes a first shaft body 211 , a first gear 212 and a first balance weight 213 .
  • the first shaft body 211 is provided in the crankcase 164 along the width direction of the motorcycle 10 .
  • the first shaft body 211 and the first gear 212 are integrated together and have a one-piece structure; of course, it can also be a split structure, and then the two are connected by pressing or bolting, so as to realize the first shaft body 211 and the The first gear 212 rotates synchronously.
  • the first gear 212 is close to the periphery of the first shaft body 211 and protrudes from left to right to form a convex ring 2122. Nearly one-third of the outer edge of the convex ring 2122 faces the wheel of the first gear 212.
  • the tooth direction extends to form a sector-shaped first balance block 213, so the first balance block 213 is a part of the first gear 212; thus the entire first balance shaft assembly 21 has a compact structure, occupies a small space inside the engine 16, and the structure of the engine 16 compact.
  • the distance from the edge of the first balance weight 213 close to the gear teeth to the center of the first gear 212 is smaller than the distance from the tooth root of the first gear 212 to the center of the first gear 212 . Therefore, the thickness of the gear teeth on the first gear 212 is the same, and after the first gear 212 meshes with the gears on the crankshaft 60 , the force of each gear tooth is the same to ensure the stable operation of the first gear 212 .
  • the first gear 212 has five first weight reduction holes 2121 in the area other than the part occupied by the first balance weight 213, and the five first weight reduction holes 2121 are along the first gear. 212 are arranged in the circumferential direction, and the distance between two adjacent first weight reduction holes 2121 is the same. Only a part of the first gear 212 is provided with the first weight-reducing hole 2121, so that the first gear 212 forms an eccentric gear to generate vibration during rotation, and the vibration generated by the first gear 212 and the vibration generated by the first balance weight 213 are mutually exclusive. Bonus to improve the vibration damping effect of the engine 16 .
  • the second balance shaft assembly 22 meshes with the gears of the left journal of the crankshaft 60 through gears, so that the second balance shaft assembly 22 and the crankshaft 60 are synchronized to operate.
  • the second balance shaft assembly 22 includes a second shaft body 221 , a second gear 222 and a second balance weight 223 .
  • the second shaft body 221 is provided in the crankcase 30 along the width direction of the motorcycle 10 .
  • the second shaft body 221 and the second gear 222 are integrated together and have a one-piece structure; of course, it can also be a split structure, and then the two are connected by pressing or bolting, so that the second shaft body 221 and the The second gear 222 rotates synchronously.
  • the second gear 222 is close to the second shaft body 221 and protrudes from left to right to form a circle of convex rings 2222. Nearly one-third of the outer edge of the convex ring 2222 faces the wheel of the second gear 222.
  • the tooth direction extends to form a fan-shaped second balance weight 223, so the second balance weight 223 is a part of the second gear 222; thus the entire second balance shaft assembly 22 has a compact structure, occupies a small space inside the engine 16, and the structure of the engine 16 compact.
  • the distance from the edge of the second balance weight 223 close to the gear teeth to the center of the second gear 222 is smaller than the distance from the tooth root of the second gear 222 to the center of the second gear 222 . Therefore, the thickness of the gear teeth on the second gear 222 is the same, and after the second gear 222 meshes with the gears on the crankshaft 60 , the force of each gear tooth is the same to ensure the stable operation of the second gear 222 .
  • the second gear 222 is provided with five second weight reduction holes 2221 in the area other than the part occupied by the second balance weight 223, and the five second weight reduction holes 2221 are located along the
  • the second gears 222 are arranged in the circumferential direction, and the distance between two adjacent second weight reduction holes 2221 is the same. Only a part of the second gear 222 is provided with the second weight reduction hole 2221, so that the second gear 222 forms an eccentric gear to generate vibration during rotation, and the vibration generated by the second gear 222 and the vibration generated by the second balance weight 223 are mutually Bonus to improve the vibration damping effect of the engine 16 .
  • FIG. 5 is a perspective view showing another aspect of the balancer 20 in the engine 10 of FIG. 2 .
  • the first balance weight 213b is integrated into the On the first shaft body 211b, the first balance weight 213b is a part of the first shaft body 211b, and then the first shaft body 211b is connected with a gear or a sprocket to be linked with the crankshaft.
  • the second balance weight 223b is integrated with On the second shaft body 221b, the second balance weight 223b is a part of the second shaft body 221b, and then the second shaft body 221b is connected with a gear or a sprocket to be linked with the crankshaft.
  • FIG. 6 is a perspective view showing that the balancer 20 in the engine 10 of FIG. 2 has only one balance shaft passing through the engine 16 .
  • the balance device 20 of the engine 16 has only one balance shaft 23 penetrating the engine 16 .
  • the balance shaft 23 includes a shaft 231 and two balance weights 232 , one of the two balance weights 231 is integrated near the right end of the shaft 231 , and the other is integrated near the left end of the shaft 231 .
  • the balance weights 232 are sector-shaped blocks integrated on the shaft 231 , each balance weight 232 is located on one side of the engine 16 , and the positions of the two balance weights 232 are symmetrical.
  • FIG. 7 shows an exploded view of the water pump device 30 and the first balance shaft assembly 21 in the engine 10 in FIG. 2 .
  • FIG. 8 shows a perspective view associated with the water pump 32 and the first balance shaft assembly 21 in the engine 10 of FIG. 2 .
  • FIG. 9 shows a cross-sectional view of the water pump 32 and the first balance shaft assembly 21 in the engine 10 of FIG. 2 .
  • one of the first balance shaft assembly 21 or the second balance shaft assembly 22 is used to transmit the kinetic energy of the crankshaft 60 to the water pump device 30 . That is to say, one of the first balance shaft assembly 21 or the second balance shaft assembly 22 not only reduces the vibration of the engine 60 , but also drives the water pump device 30 to work.
  • the axial pressure of the coolant on the first balance shaft assembly 21 or the second balance shaft assembly 22 and the axial pressure of the lubricating oil on the first balance shaft assembly 21 or the second balance shaft assembly 22 are opposite and the two forces cancel each other out.
  • the first The first shaft body 211 of the balance shaft assembly 21 serves as the power shaft of the water pump device 30 .
  • the water pump device 30 includes a water pump housing 31 and a water pump 32 .
  • the water pump housing 31 is fixed to the right side of the engine 16 by bolts, and a rubber seal 33 is provided between the water pump housing 31 and the main body of the engine 16 .
  • the water pump casing 31 is provided with a liquid inlet channel 311 extending from front to rear to the middle of the engine 16 , the inner wall of the liquid outlet end of the liquid inlet channel 311 is an arc surface to form a turn, and the coolant enters from the liquid inlet end of the liquid inlet channel 311 . , and then turn at the liquid outlet and enter into the water pump 32 .
  • a water pump cavity 312 connected to the liquid inlet channel 311 is provided on the water pump shell 31 near the liquid outlet end of the liquid inlet channel 311 , and the water pump 32 is arranged in the water pump cavity 312 .
  • a "6"-shaped flow channel 313 is formed around the water pump cavity 312. The cooling liquid enters through the liquid inlet channel, and then enters the water pump 32 located in the water pump cavity 312. The water pump 32 pumps the cooling liquid into the flow channel 313, Then, it flows into the cooling pipe (not shown in the figure) of the engine 16 through the flow channel 313 to cool the engine.
  • the water pump 32 includes an impeller 321 and an end cover 322.
  • the impeller 321 has a curved cover 3211 and a plurality of vanes 3212.
  • the curved shape of the right side wall of the curved cover 3211 is the same as the curved shape of the inner wall of the water pump chamber 312.
  • the curved cover 3211 and the water pump chamber have the same curved shape. 312 fit between the side walls.
  • the curved cover 3211 is provided with a liquid inlet opening 3213.
  • the liquid inlet opening 3213 corresponds to the liquid outlet end of the liquid inlet channel 311. After the cooling liquid turns at the liquid outlet end of the liquid inlet channel 311, it enters the water pump from the liquid inlet opening 3213. 32 of them.
  • the blades 3212 are part of the curved cover 3211 , the number of the blades 3212 is six, and the six blades 3212 are arranged along the circumference of the curved cover 3211 .
  • the end cover 322 is connected with the impeller 321 by bolts.
  • the end cover 322 is provided with six positioning grooves 3221, and the side of the blade 3212 away from the curved cover 3211 is embedded in the positioning grooves 3221.
  • the water pump 32 is connected to the first shaft body 211 through the bolts 34.
  • the first shaft body 211 is provided with a platform 210.
  • the end cover 322 After the end cover 322 is sleeved on the first shaft body 211, the left side wall of the end cover 322 Connected to the platform 210 , the end cover 322 cannot move leftward on the first shaft body 211 . Then, it is connected with the first shaft body 211 by the bolts 34.
  • the bolts 34 press the impeller 321 to the first shaft body 211, and the impeller 321 presses the end cover 322 to realize the installation of the water pump 32 itself and the installation of the water pump 32 and the balance shaft 20. .
  • the first balance shaft assembly 21 has a lubricating oil flow cavity 200, an oil inlet hole 201 communicating with the lubricating oil flow cavity 200, and an oil outlet hole 202 communicating with the lubricating oil flow cavity.
  • the distance of the water pump is close to the distance from the oil inlet hole 201 to the water pump 32, the oil outlet 202 corresponds to the bearing 24 sleeved on the first balance shaft assembly 21, and the bearing 24 sleeved on the first balance shaft assembly 21 is lubricated , reduce the wear of the bearing 24, reduce the heat of the engine, and improve the working efficiency of the engine.
  • the bearing needs lubricating oil, and the water pump needs to pump the cooling liquid.
  • the shaft of the balance shaft needs to be separated from the lubricating oil and the cooling liquid to avoid The lubricating oil is diluted to ensure the working life of the engine 16 .
  • a sleeve 205 is sleeved, and a seal is provided between the shaft of the first shaft body 211 and the inner wall of the sleeve 205
  • the first shaft body 211 and the O-shaped rubber ring 207 on the inner wall of the sleeve 205 limit the contact and mixing of the cooling liquid and the lubricating oil.
  • a sealing ring 206 is sleeved on the corresponding sleeve 205, the inner wall of the sealing ring 206 is in contact with the sleeve 205, the outer wall of the sealing ring 206 is connected with the engine 16, and when the first shaft body 211 is linked with the crankshaft 60, the first shaft body 211 rotates relative to the sealing ring 206 , whereby the first shaft body 211 achieves dynamic sealing relative to the sealing ring 206 .
  • FIG. 10 shows a perspective view of the sealing ring 206 of FIG. 7 .
  • FIG. 11 shows a cross-sectional view of the seal ring 206 of FIG. 7 .
  • the sealing ring 206 has the following structure: an outer sealing ring 2061 where the outer wall of the sealing ring 206 is located, a middle sealing ring 2062 connected with the outer ring 2061 , and an inner sealing ring 2063 in contact with the outer wall of the sleeve 205 .
  • the cross-sectional shape of the outer sealing ring 2061, the middle sealing ring 2062 and the inner sealing ring 2063 is roughly "I" shape, and a ring of skeleton 2064 is arranged inside the outer sealing ring 2061 and the middle sealing ring 2062.
  • the specific cross-sectional shape of the skeleton 2064 is "7" shape
  • the specific cross-sectional shape of the inner sealing ring 2063 is "W” shape
  • the inner sealing ring 2063 has two sealing parts 2066 that are in contact with the sleeve 205.
  • the corresponding contacts on the inner sealing ring 2063 are covered with a retaining spring or a ring spring 2065, so as to ensure that the inner sealing ring 2063 and the sleeve 205 are in close contact.
  • a layer of wear-resistant coating 2031 is provided on the sleeve 205, and the wear-resistant coating 2031 is a diamond-like coating.
  • the wear-resistant layer 2031 improves the wear resistance of the first shaft body 211 , ensures the sealing performance of the sealing ring 205 to the first shaft body 211 , and improves the service life of the engine 16 .
  • FIG. 12 is a front view of the piston 40 and the connecting rod 401 of FIG. 1 .
  • the crankshaft 60 In addition to driving the water pump 32 to work on the engine 16 , the crankshaft 60 mainly moves the piston 40 upward under inertia through the crankshaft 60 . 12, the piston 40 is connected with the crankshaft 60 through the connecting rod 401, so the crankshaft 60 drives the connecting rod 401 to move, so the connecting rod 401 pushes the piston 40 to move upward, and the kinetic energy generated by the combustion of fuel in the combustion chamber pushes the piston 40 to move downward.
  • the piston 40 is a forged piston, and the piston 40 includes two parts, a piston head 41 and a piston skirt 42, and the piston head 41 and the piston skirt 42 are integrally formed.
  • the piston skirt 42 is formed with pin holes connected to the connecting rod of the crankshaft.
  • the length of the axis along the height direction of the piston 40 is L ⁇
  • the diameter of the section of the piston 40 is L ⁇
  • the ratio of L ⁇ to L ⁇ is 0.30 ⁇ 0.40:1.0.
  • the diameter of the piston 40 is 108 mm
  • the height of the piston 40 is 37 mm. It reduces the height of the piston 40 to reduce the frictional force of the piston 40 sliding on the cylinder wall of the engine 16 , and at the same time, the piston 40 is lightweight, and its weight is small, and the efficiency of the back and forth action of the piston 40 in the cylinder of the engine 16 is high. , the power output of the engine 16 is stronger.
  • two pin bosses 43 with pin holes 430 are provided in the middle part of the piston 40 , a gap is left between the two pin bosses 43 , and the upper end of the connecting rod 401 is located in the gap.
  • Connecting ribs 431 are provided on the left and right sides of the pin hole 430 of each pin boss 43. One end of the connecting rib 431 is connected to the pin boss 43, and the other end is extended upwards from the lower end of the pin boss 43 to the bottom of the piston head 41.
  • connecting rib 431 is connected with the pin hub 43, and the other end is connected with the piston skirt at the bottom of the piston 40;
  • the connecting rib 431 belongs to a part of the piston 40 , and the connecting rib 431 enhances the strength of the pin hub 43 on the piston 40 and improves the strength of the piston 40 .
  • two reinforcing ribs 433 are arranged between the two pin hubs 43 , and the reinforcing ribs 433 are on the left and right sides of the pin hole 430 .
  • the reinforcing rib 433 strengthens the connection strength between the two pin hubs 40 and improves the strength of the piston 40, the piston 40 does not deform during operation, and has high stability.
  • a square hole is cut in the middle of the reinforcing rib 433 to form a lubricating oil hole 4330 .
  • the lubricating oil flows through the middle of the lubricating oil hole 4330 to lubricate the connecting rod 401 in the pin hole 430 to reduce wear.
  • two air ring grooves 411 for installing air rings are sequentially arranged on the upper part of the piston 40 from top to bottom.
  • An oil ring groove 412 is provided below the gas ring groove 411 , and a plurality of oil holes 4120 are opened in the oil ring groove 412 along the circumferential direction. Lubricating oil on the cylinder walls of the engine 16 enters between the two piston skirts 42 of the piston 40 from the oil hole 4120 .
  • An oil ring 413 is sleeved on the oil ring groove 412, and the oil ring 413 scrapes off the lubricating oil on the cylinder wall of the engine 16 into the above-mentioned oil hole 4120, so as to realize the oil return effect, prevent the engine 16 from burning oil, and keep the internal parts of the engine 16. lubrication to reduce wear.
  • the inner wall of the oil ring 413 is recessed outward to form an accommodating cavity 4130 , and a supporting spring 4131 is placed inside the accommodating cavity 4130 .
  • the supporting spring 4131 is an annular spring.
  • the cylinder wall of the engine 16 is in close contact to scrape off the lubricating oil on the inner wall of the cylinder of the engine 16 to ensure the oil scraping effect of the oil ring 413, and when installing the oil ring, only two parts need to be installed to improve the installation efficiency of the oil ring 412 .
  • the upper part of the outer wall of the oil ring 413 and the lower part of the oil ring 413 respectively extend outwards away from the inner wall of the oil ring groove 412 to extend a circle of oil scraping convex rings with a gradually decreasing thickness 4133, and a distance is left between the two oil scraping convex rings 4133 to form an oil scraping groove 4135, a plurality of oil inlet holes 4134 are opened at the bottom of the oil scraping groove 4135, and the lubricating oil scraped by the oil scraping convex ring 4133 flows from the oil inlet holes 4134, then through the support spring 4131, and then through the oil hole 4120 into the piston 40. 12, the outer wall of the oil ring 413 is coated with a diamond-like coating 4136, and the diamond-like coating 4136 improves the wear resistance of the oil ring 40.
  • FIG. 14 shows a perspective view of the coupling of the crankshaft 60 and the flywheel 51 of the magneto in the engine 16 .
  • FIG. 15 is a sectional view showing a section along the C-C axis in FIG. 14 , and in FIG. 16 is placed a partial view of B in FIG. 15 .
  • FIG. 17 shows the exploded view of FIG. 15 .
  • the crankshaft 60 not only pushes the piston 40 to move, but also acts as the main shaft of the magneto 50 on the engine 16 to drive the magneto 50 to work.
  • the magneto 50 includes a magneto rotor (not shown in the figure) and a flywheel 51 which is covered outside the magneto rotor.
  • the flywheel 51 includes a magnetic isolation plate 511 close to the crankshaft 60. The edge of the magnetic isolation plate 511 extends away from the crankshaft 60 to form a cylindrical outer cover 512. The outer wall of the overlapping part of the outer cover 512 and the magnetic isolation plate 511 is provided with a Ring gear teeth 513.
  • a circular hole is opened in the middle of the magnetic isolation plate 511, and the hole extends away from the crankshaft 60 to form a hollow truncated flywheel core 514.
  • the end of the crankshaft 60 is inserted into the flywheel core 514, and passes through and the crankshaft 60 connected fixing bolts 52 to press the flywheel wheel core 514 to realize the fixation of the flywheel 51 and the crankshaft 60 .
  • the end of the flywheel core 514 away from the crankshaft 60 extends a circle toward its center to form a bent portion 515 , and the bent portion 515 is in contact with the washer on the fixing bolt 52 to increase the fixing bolt 52
  • the friction force between the flywheel core 514 and the flywheel core 514 is thus firmly fixed to the flywheel 51 .
  • the end of the crankshaft 60 close to the flywheel 51 has a first connecting section 601 and a second connecting section 602 whose thickness gradually becomes thinner toward the flywheel 51 .
  • the thickness of the first connecting section 601 is greater than the thickness of the second connecting section 602 , when the flywheel 51 is installed, the flywheel wheel core 514 is sleeved on the second connecting section 602 .
  • a blind hole 61 is drilled on the crankshaft 60 , and the depth of the blind hole 61 is approximately the sum of the length of the axis of the first connecting segment 601 and the length of the axis of the second connecting segment 602 .
  • the inner wall of the blind hole 61 corresponding to the first connecting section 601 has threads, while the inner wall of the blind hole 61 corresponding to the second connecting section 602 is a smooth surface.
  • the fixing bolt 52 fixes the flywheel 51
  • the thread on the fixing bolt 52 It engages with the thread in the blind hole 61 .
  • the fixing bolt 52 is connected with the crankshaft 60, the thin second connecting section 602 is avoided, the thinnest part of the crankshaft 60 is not stressed, and the engine 16 of the crankshaft 60 works stably.
  • the fixing bolt 52 has a bolt head 522 and a bolt shank 521 composed of a smooth section 5211 and a threaded section 5212, the bolt head 522 is integrated with the bolt shank 521, and the threaded section 5212 on the bolt shank 521 and the blind
  • the inner threads of the hole 61 are screwed together, and the smooth section 5211 of the bolt rod 521 corresponds to the smooth section of the inner wall of the blind hole 61, so the second connecting section 602 of the crankshaft 60 is not stressed and the crankshaft is not deformed.
  • the entire section of the bolt shank may also be provided with external threads. There is no contact between the smooth section of the bolt rod and the inner wall of the blind hole or just sticking together, so there is no interaction force between the bolt rod and the thinnest part of the crankshaft, so the crankshaft is not easily deformed and has good durability.
  • FIG. 18 is a perspective view showing the coupling of the intake system 73 and the oil separator 70 on the engine 16 .
  • Figure 19 shows an exploded view of the oil and gas separator.
  • FIG. 20 shows a cross-sectional view of the coupling of the intake system 73 and the oil separator 70 on the engine 16
  • FIG. 21 also shows an exploded view of the intake system 73 and the oil separator 70 .
  • the combustion of fuel in the combustion chamber generates kinetic energy that pushes the piston 40 to move downward to provide power for the motorcycle 10 , and at the same time, exhaust gas is continuously discharged from the crankcase.
  • the engine 16 when the engine 16 is working, if the exhaust gas discharged from the crankcase is discharged into the atmosphere, it will cause serious pollution to the environment, so the engine 16 also includes an oil-gas separator 70 , and the unburned mixture and oil droplets in the exhaust gas of the engine 16 At the same time, when passing through the oil and gas separator 70, the oil droplets naturally settle back into the engine crankcase under gravity to mix with the lubricating oil, and the rest of the gas enters the engine 16 for re-combustion to achieve effective treatment of crankcase exhaust gas.
  • the oil-gas separator 70 includes a box body 71 and a cover body 72 , and the cover body 72 is connected to the box body 71 .
  • the lower part of the box body 71 is provided with an air inlet pipe 716, and the upper part is provided with an air outlet pipe 717, and the side wall or/and the bottom of the box body 71 are inclined planes.
  • the box body 71 is provided with a plurality of slow-flow chambers 700 that are connected to form a labyrinth structure.
  • the exhaust gas enters the oil-gas separator 70 from the air inlet pipe 716, and after it flows into each slow-flow chamber 700, it will go through multiple backflows and extend the time.
  • the path of the exhaust gas in the slow flow chamber 700 is that the particulate matter and fuel in the exhaust gas gradually settle to the bottom of the box 71 during the back and forth flow of the exhaust gas, and then flow back to the oil collecting pipe of the engine 16 along the pipeline.
  • the oil and gas separator of the labyrinth structure prolongs the passage of the exhaust gas in the inside of the oil and gas separator, the oil and gas separation effect is good, and the volume of the oil and gas separator is small.
  • the exhaust gas flows through the labyrinth-type oil and gas separator, and the oil droplets in the exhaust gas naturally settle back into the crankcase of the engine, and the rest of the gas enters the engine for re-burning.
  • the box body 71 is provided with a first partition plate 710 extending from the side wall of the box body 71 to the bottom wall of the box body 71, extending from the end of the first partition plate 710 along the width direction of the box body 71, and then After turning again, the second partition plate 720 extending along the length direction of the box body 71 to the bottom of the box body 71, and the second partition plate 720 separating the space surrounded by the first partition plate 710 and the second partition plate 720 into two connected spaces. Three separators 730.
  • the first partition plate 710 , the second partition plate 720 and the third partition plate 730 enclose the space inside the box body 71 out of the above-mentioned slow-flow chamber 700 .
  • the first partition 710 is along the box body 71 .
  • the bottom end of the plate body extending in the length direction is provided with a gap 7100, and the first chamber 711 and the second chamber 712 are communicated with each other through the gap 7100, and the fuel and particulate matter in the slow flow chamber can pass through the gap 7100. back into the first chamber 711 .
  • the upper end of the second partition plate 720 that separates the second chamber 712 and the third chamber 713 has an opening 7200 , the end of the first partition plate 710 that separates the third chamber 713 and the third chamber 714 and the inner wall of the box body 71 There is no connection between them, so as to form a through port 7300 for waste circulation; and after the exhaust gas entering from the intake pipe 716 enters the first chamber 711, it will enter the second chamber 712 through the above-mentioned gap, and then there is a second chamber 712. The upper part of the second chamber 712 enters the third chamber 713, and then enters the fourth chamber 740 from the unconnected part between the end of the first partition plate 710 and the inner wall of the box body 71.
  • the exhaust gas of the engine 16 enters the air intake pipe 716 of the oil and gas separator 70 , the air intake pipe 716 is located at the lowest end of the oil and gas separator, and the air intake pipe 716 of the oil and gas separator opens toward the top of the oil and gas separator 70 .
  • the intake pipe 716 of the oil-gas separator 70 communicates with the first chamber 711 .
  • the air outlet pipe 717 of the oil and gas separator 70 is located above the air inlet pipe 716 ;
  • the air intake system 73 includes an air filter box 731 , an air filter element 732 and an engine intake pipe 733 located in the air filter box 731 , and the outlet of the air outlet pipe 717 of the oil-gas separator 70 Towards the intake port 719 of the engine intake pipe 733 .
  • the air filter box 731 includes a box body 7311 and a box cover 7312.
  • the oil and gas separator 70 is arranged on the box cover 7312, and one end of the box cover 7312 is partially recessed downward for a mounting position 7312a, where the oil and gas separator 70 is placed.
  • a section is recessed along the longitudinal direction of the air filter box 731 to form a positioning groove 7312b communicating with the installation position 7312a, and the air outlet pipe 717 of the oil and gas separator 70 is placed on the positioning groove 7312b.
  • Two engine air intake pipes are correspondingly arranged in the box 7311, the two engine air intake pipes 733 are inclined towards the direction of the air filter element 732, and the air outlet of the air outlet pipe 717 of the oil and gas separator 70 corresponds to one of the engine air intake pipes 733, and The air filter element 732 is far away from the engine intake pipe 733 .
  • the air outlet 719 of the air outlet pipe 717 faces the direction of the engine air intake pipe 733 ; the exhaust gas discharged from the air outlet pipe 717 enters the engine air intake pipe 733 .
  • An air filter element 732 is placed in the air filter box 731 , the air filter element 732 is located on one side of the air filter box 731 , and the oil-gas separator 70 is located on the other side of the air filter box 731 .
  • FIG. 22 shows a front view of the shift member 80 on the engine 16 lacking one of the anti-separation rings 84 .
  • FIG. 23 shows an exploded view of the shift member 80 on the engine 16 .
  • the engine 16 further includes a shift member 80 associated with the crankshaft 60 .
  • the shift member 80 includes a ring gear 81 and a gear seat 82 concentric with the ring gear 81 .
  • the gear seat 82 is provided with a plurality of anti-rotation grooves 822
  • the ring gear 81 is provided with a plurality of gear teeth
  • the ring gear 81 is provided with a first anti-rotation block 811
  • the gear seat 82 is provided with a second anti-rotation block 821;
  • the first anti-rotation block 811 and the second anti-rotation block 821 are matched
  • the first anti-rotation block 811 is partially located in the anti-rotation groove 822, so that when the ring gear 81 rotates, the corresponding part between the first anti-rotation block 811 and the second anti-rotation block 821 allows the ring gear 81 to push
  • the gear seat 82 rotates; the inner wall of the ring gear 81 is provided with a groove portion
  • the driving gear in the engine 16 rotates, it drives the gear base 82 to rotate together.
  • the gear base 82 rotates, the inner wall of the accommodating slot 800 squeezes the damping leaf spring 83, and provides resistance to the rotation of the gear base 82 under the elastic force of the damping leaf spring 83 , the resistance constitutes a buffer force; thus, it protects the gears and reduces the noise generated during shifting.
  • the ring gear is connected to the anti-releasing ring piece 84 , and the anti-releasing ring piece 84 is divided into two groups.
  • the rings are connected, and the anti-dropping ring piece 84 limits the damping plate spring.
  • the anti-releasing ring piece 84 may also be one piece.
  • this embodiment is different from the above-mentioned implementation in that the The shock plate spring 83 is replaced with a shock spring 85, the ring gear 81b is provided with a first notch 819, the gear seat 82b is provided with a second notch 829, the first notch 819 and the second notch 829 are combined with each other to form a square through hole , the damping spring 85 is arranged in the square through hole formed by the first notch 819 and the second notch 829 .
  • a first positioning block 851 and a second positioning block 852 are provided in the accommodating opening formed by the first gap 819 and the second gap 829;
  • the first positioning block 851 is provided with a first ring groove 8511, and one end of the shock-absorbing spring 85 Insert into the first ring groove 8511;
  • the second positioning block 852 is provided with a second ring groove 8521, the other end of the damping spring 85 is inserted into the second ring groove, the gear seat 82b rotates relative to the ring gear 81b, and the damping spring 85 is compressed to
  • the first and second positioning blocks abut against each other.
  • the first and second positioning blocks can be replaced with metal posts, the shock-absorbing spring 85 is sleeved on the metal posts, and the axial length of the metal posts is smaller than that of the shock-absorbing spring.
  • FIG. 26 shows a perspective view of the engine housing 90 on the engine 16 .
  • FIG. 27 is a cross-sectional view showing the engine case 90 .
  • the engine 16 further includes a noise reduction engine casing 90, the engine casing 90 includes a housing 91 and a noise reduction plate 92, the noise reduction plate 92 reduces the noise generated by the engine 16 during operation.
  • Eight protruding ribs 912 arranged along the circumference of the housing 91 are integrated on the inner wall of the housing 91 , and each protruding rib 912 is locally thickened near the center of the housing 91 to form a support column 9121 .
  • Eight support columns 9121 are fixed on the left side cover of the engine by bolts (not shown in the figure).
  • the noise reduction plate 92 is connected to the housing 91 by pressing bolts 931 and spacers 932. Specifically, the noise reduction plate 92 is pressed on the boss 915 on the housing 91, and the noise reduction plate 92 thickens the housing 91.
  • the thickness of the shell can reduce the vibration of the casing and realize the noise reduction effect.
  • the upper part of the noise reduction plate 92 is wrapped with a shock-absorbing pad 922 made of vulcanized rubber.
  • the shock-absorbing pad 922 is in contact with the rib 912 on the housing 91, and after the pressing bolt 931 is connected to the housing 91, the pressing bolt 931 exerts pressure on the noise reduction plate 92 so that the noise reduction plate 92 is bent and deformed.
  • the contact surface between the vibration damping pad 922 and the housing 91 is large, the vibration absorption effect is good, and it is ensured that after the noise reduction plate and the vibration damping pad 922 are installed on the housing 91, the thickness of the housing 91 is maintained within a certain range, and further It is ensured that the volume of the engine 10 will not be greatly changed, and it is convenient for the engine to be installed on the frame.
  • a plurality of strip-shaped or fan-shaped weight reduction through holes 923 are opened on the noise reduction plate 92 , and the weight reduction through holes 923 are annularly arranged on the noise reduction plate 92 .
  • the weight-reducing through hole 923 reduces the weight of the engine casing 90 and facilitates installation, and the vibration on the noise reduction plate 92 can be dissipated at the weight-reducing through hole 923 .
  • the shock absorbing pad 922 can also be completely wrapped on the noise reduction plate 92; the shock absorbing pad 922 can also be provided on the casing 91, or the casing 91 and the noise reduction plate 92 can be respectively provided with shock absorbing pads .
  • FIG. 28 there are a plurality of positioning posts 914 on the inner wall of the housing 91, and a plurality of positioning holes 921 with a U-shaped structure on the noise reduction plate 92.
  • the noise reduction plate 92 is connected to the housing 91 or the positioning holes 921 are set into the positioning column 914 to achieve rapid positioning of the noise reduction panel 92 .
  • a plurality of support bosses 915 are provided on the casing 91 , the noise reduction plate 92 or the shock-absorbing pad 922 located on the noise reduction plate 92 is connected with the support bosses 915 , and a part of the noise reduction plate 92 is not in contact with the casing 91 . contact, it is in the floating state.
  • the support boss 915 supports the noise reduction plate 92 so that the noise reduction plate 92 is partially suspended, so that the vibration transmitted to the noise reduction plate 92 can be better dissipated and the noise is reduced.
  • the noise reduction plate 92 is a metal sheet with a through hole 920 in the middle.
  • the through hole 920 corresponds to the screw hole in the middle of the casing 91, and is then connected to the casing 91 by pressing bolts 931. Press The bolts press the noise reduction plate 92 so that the noise reduction plate 92 is partially recessed.
  • a spacer 932 is sleeved on the pressing bolt 931 , and the spacer 932 is in contact with the noise reduction plate 92 .
  • the spacer block 932 is a rubber block, a plastic block or a metal block, and the spacer block 932 is in the shape of a truncated cone.
  • the pressing bolt After the pressing bolt passes through the spacer block 932, it is connected to the housing 91 through the noise reduction plate 92, and the noise reduction plate cushion
  • the bottom surface of the block 932 with a larger area is in contact with the noise reduction plate 92, and the top surface with a smaller area is in contact with the compression bolt.
  • the compression bolts are matched together, which increases the contact area between the compression bolts and the noise reduction plate, so the pressure of the compression bolts on the noise reduction plate will be separated.
  • the noise board is obviously deformed.
  • FIG. 29 shows a perspective view of the driving gear of the oil pump of the engine 16 , the figure only specifically shows the driving gear, and other structures of the oil pump are not shown.
  • the engine 16 further includes an oil pump, and the oil pump is provided with a driving gear 100.
  • the driving gear 100 includes a wheel disc and gear teeth provided on the wheel disc, wherein the wheel disc is disc-shaped, and the gear teeth are along the wheel. In the circumferential direction of the disc, there are multiple arrays on the edge of the roulette.
  • a socket 101 with a diameter slightly smaller than that of the driving gear 100 is opened in the middle of the driving gear 100 , and the center of the socket 101 is on the same axis as that of the driving gear 100 .
  • the driving gear 100 is provided with a pin hole 102 penetrating the driving gear 100, wherein the pin hole 102 and the socket 101 are communicated with each other, so that the cross-section of the pin hole 102 of the two can be "U"-shaped. Therefore, under this structure, The driving gear 100 will reduce the requirements for the distance between the pin rods that cooperate with the pin holes and the diameter of the pin rods. In the case of an inward error in the distance between the two pin rods, it will not affect the machine. performance of the oil pump.
  • the two pin holes 102 are symmetrical along the center axis of the drive gear 100 .
  • the driving gear 100 is also provided with an annular groove 103, which is concentric with the sleeve hole 101, and the distance from the annular groove 103 to the center of the drive gear 100 is greater than the distance from the inner wall of the pin hole to the center of the drive gear.
  • FIG. 30 shows a perspective view of the shift hub on the engine 16 .
  • FIG. 31 shows a cross-sectional view of the shift mechanism 110 of the engine 16 along the axis, which shows the shift hub 111 and the induction magnet 113 of the shift mechanism 110, and the Hall sensor 112.
  • FIG. 32 shows an exploded view of the shift hub 111 of the shift mechanism 110 , the induction magnet 113 , and the Hall sensor 112 .
  • the shifting structure 110 includes an input shaft, an output shaft, a shift paddle, and a shift hub with a shift groove, wherein a plurality of gears are provided on the input shaft, and the input shaft is drive-connected to the crankshaft, and further The crankshaft can drive the input shaft to rotate, the gear on the input shaft is sleeved on the input shaft through the canine teeth, and then can slide back and forth on the input shaft, and the input shaft can also rotate with the gear on the drive; the end of the output shaft is provided with a crankset , the crankset is connected with the rear wheel through a chain drive, a plurality of gears are also sleeved on the output shaft, and the gears on the output shaft and the input shaft are meshed with each other, the shift paddle has one or more, and one end of the shift paddle is It is inserted between the gears of the output shaft and/or the gears of the input shaft, and the other end is clamped into the shift groove of the
  • the inside of the shift hub 111 is a hollow structure, which reduces the weight of the entire engine, reduces the weight of the entire motorcycle 10 , and improves the maneuverability of the motorcycle 10 .
  • Mounting bearings 116 are sleeved at the close two ends of the shift hub 111 , and the mounting bearings 116 are connected to the crankcase of the engine 16 .
  • a positioning star wheel 115 is connected to one end of the shifting hub 111 through a locking screw 1151 .
  • the induction magnet 113 is provided at the other end of the shift hub 111 .
  • a bayonet 1112 with a circular cross-section is provided on the end of the shift hub 111 where the induction magnet 113 is installed, and the bayonet 1112 communicates with the above-mentioned chamber of the shift hub 111.
  • the inner wall of the inductive magnet 1112 extends to the axis of the bayonet 1112 to form the anti-rotation bump 1113, the induction magnet 113 is partially inserted into the bayonet 1112, and the bottom end of the induction magnet 113 is formed with an anti-separation prevention that fits with the inner wall of the bottom end of the bayonet 1112. Convex 1131 .
  • the anti-separation protrusion 1131 is arranged in the cavity of the shift hub 111 and abuts against the inner wall of the upper end of the cavity.
  • the induction magnet 113 is provided with an annular raised portion 1133, the diameter of the raised portion 1133 is larger than the diameter of the bayonet 1112, that is, the minimum diameter of the raised portion 1113 is larger than the diameter of the bayonet 1112, the raised portion 1133 and the shift hub 111
  • the housings cooperate to prevent the induction magnet 113 from sliding into the chamber.
  • two anti-rotation openings 1132 are provided on the side wall of the induction magnet 113.
  • the two anti-rotation openings 1132 are symmetrically arranged and the two anti-rotation openings 1132 are not communicated with each other. 1132 among them.
  • the Hall sensor 112 and the dashboard 18 of the motorcycle 10 are connected by wires.
  • the Hall sensor 112 corresponds to the induction magnet 113, and there is a certain distance between the Hall sensor 112 and the induction magnet 113, so that the two are not in contact.
  • the induction magnet and the Hall sensor will not fail due to wear, and at the same time, the two rotate with each other. Only by measuring the relative rotation angle between the two through the Hall sensor, you can understand the rotation angle of the shift hub, and then understand the change.
  • the position of the gear hub determines the gear position of the vehicle. When shifting gears, after the shifting hub 111 rotates 30°, the relative rotation between the induction magnet and the sensor will cause the current change of the Hall sensor. After these changes are processed by the motorcycle controller 17, the information can be converted into It is displayed on the instrument panel 18 as a digital signal.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

Motocyclette (10) et son moteur (16), la motocyclette (10) comprenant un châssis (11), une roue avant (12), une roue arrière (13), et un système de suspension (19); le système de suspension (19) comprend un cadre de suspension avant (191) reliant la roue avant (12) au châssis (11) et un cadre de suspension arrière (192) reliant la roue arrière (13) au châssis (11); le moteur (16) comprend un appareil d'équilibrage (20), l'appareil d'équilibrage (20) comprenant un premier ensemble arbre d'équilibrage (21) et un second ensemble arbre d'équilibrage (22), le premier ensemble arbre d'équilibrage (21) et le second ensemble arbre d'équilibrage (22) étant respectivement positionnés sur deux côtés du moteur (16).
PCT/CN2021/086910 2020-11-20 2021-04-13 Motocyclette et son moteur WO2022105099A1 (fr)

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WO2022105099A1 (fr) * 2020-11-20 2022-05-27 浙江春风动力股份有限公司 Motocyclette et son moteur

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