Dual-mode regulation and control motorcycle carburetor

Abstract

The invention relates to the technical field of carburetors, and discloses a dual-mode regulation motorcycle carburetor which comprises a vertical cylinder, an air inlet pipe is fixedly connected to the bottom of the vertical cylinder, an air inlet is formed in one end of the air inlet pipe, an air outlet is formed in the other end of the air inlet pipe, and an oil limiting mechanism is arranged in the vertical cylinder. A gear adjusting mechanism is arranged in the vertical cylinder, a reset assembly is arranged outside the gear adjusting mechanism, a bottom shell is detachably connected to the bottom of the air inlet pipe, the oil limiting mechanism comprises a top cover, the top cover is detachably connected to the top end of the vertical cylinder, and a through mouth is fixedly connected to the top of the top cover. The gear adjusting operation is convenient and fast, operation of other parts is not affected, the lifting rod is lifted or pressed down only through the external plastic ball during adjusting, acting force can be transmitted to the movable needle through the hanging ring structure, the moving resistance is reduced through the inclined plane design of the contact portion of the movable needle and the clamp, and the gear can be easily adjusted without disassembling the whole carburetor.

Description

Technical Field

[0001] This invention relates to the field of carburetor technology, specifically to a dual-mode controlled motorcycle carburetor. Background Technology

[0002] In motorcycle power systems, the dual-mode carburetor, as a key fuel supply component, plays a crucial role in atomizing fuel and mixing it with air in a specific ratio to provide the engine with a suitable air-fuel mixture. Its performance directly affects the motorcycle's power output, fuel economy, and emissions. With the diversification of motorcycle usage scenarios, users are increasingly demanding higher fuel supply efficiency from carburetors under different seasons and operating conditions. Especially in low-temperature winter environments, increased air density and greater difficulty in fuel atomization can lead to decreased carburetor efficiency, resulting in difficulty starting the engine, unstable idling, or even insufficient power, severely impacting the riding experience and reliability.

[0003] Existing dual-mode controlled motorcycle carburetors typically use a vertical cylindrical structure as their core, with an intake pipe connected to the bottom to introduce air. Internally, a fuel limiting mechanism and fuel supply components control fuel levels. The fuel limiting mechanism generally includes a top cover, a spring, a piston cylinder, and a pressure plate. The top cover is fixed to the top of the vertical cylinder. One end of the spring is fitted to the top cover, and the other end acts on the piston cylinder. The spring force pushes the piston cylinder to slide within the vertical cylinder, adjusting the fuel-air mixture ratio. The pressure plate is fixed inside the piston cylinder by simple snap-fit ​​or bolt connection. A central hole allows a movable pin to pass through. The movable pin, a key component for gear adjustment, has a gear slot on its outer side that engages with a clamp to restrict its axial position. The intake pipe connects to the motorcycle's air intake system and the engine's air intake at both ends, respectively. Some carburetors have a fixed base to protect the internal components. During operation, air enters the vertical cylinder through the intake pipe, mixes with the fuel supplied by the fuel limiting mechanism, and is then delivered to the engine through the exhaust port. The engagement of the movable pin and the clamp adjusts the fuel supply level, achieving initial control of the air-fuel mixture concentration.

[0004] In low-temperature riding scenarios during winter, the shortcomings of existing carburetors are particularly prominent: First, gear adjustment is cumbersome. To improve fuel supply efficiency, the engagement position of the moving pin and the clamp must be adjusted, requiring the disassembly of multiple components such as the top and bottom of the carburetor. This not only consumes a lot of time but also easily leads to damage to components or improper installation during disassembly, resulting in a decrease in the carburetor's sealing performance and further affecting fuel supply stability. This is because the existing structure lacks a beveled design for the engagement between the moving pin and the clamp, and the pull lever interferes with external components, making it impossible to adjust gears directly in the entire machine state. Second, the stability of components is insufficient. The pressure plate is fixed only by a simple connection, which is prone to displacement during carburetor vibration, causing the moving needle to be unable to be accurately positioned, resulting in fluctuations in the fuel supply ratio. Thirdly, the reset performance is poor; after adjusting the moving needle, the clamp is difficult to quickly and stably engage in the new gear slot, requiring manual assistance for positioning. This is because existing carburetors lack a dedicated reset component, making it impossible to quickly reset the clamp using spring force. This leads to loosening after gear shifting, affecting the reliability of fuel supply in low-temperature environments, and in severe cases, even causing the engine to stall mid-journey, posing a safety hazard for winter riding. Therefore, this invention provides a dual-mode controlled motorcycle carburetor to address the shortcomings of existing technologies. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a dual-mode controlled motorcycle carburetor, solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dual-mode control motorcycle carburetor, comprising a vertical cylinder, an air inlet pipe fixedly connected to the bottom of the vertical cylinder, an air inlet at one end of the air inlet pipe, an air outlet at the other end of the air inlet pipe, a fuel limiting mechanism inside the vertical cylinder, a gear adjustment mechanism inside the vertical cylinder, a reset component outside the gear adjustment mechanism, and a bottom shell detachably connected to the bottom of the air inlet pipe.

[0007] Preferably, the oil limiting mechanism includes a top cover, which is detachably connected to the top of the vertical cylinder. A through-hole is fixedly connected to the top of the top cover, and a spring is provided at the bottom.

[0008] Preferably, the spring is located inside the vertical cylinder, and a piston cylinder is slidably connected to the inner side of the vertical cylinder. A functional groove is provided on the top of the piston cylinder. One end of the spring contacts the bottom of the top cover, and the other end of the spring contacts the inner side of the functional groove.

[0009] Preferably, a pressure plate is provided inside the groove on the inner side of the functional slot, a through hole is provided in the center of the pressure plate, and a pressure groove is provided at the bottom of the pressure plate.

[0010] Preferably, the inner side of the functional slot has two fitting grooves, the inner side of the fitting grooves has two threaded grooves, and the top of the pressure plate has two folding plates.

[0011] Preferably, the outer side of the folding plate is engaged with the inner side of the fitting groove, and two mounting holes are opened inside the folding plate. A stud is slidably connected to the inner side of the mounting hole, and the bottom end of the stud is threadedly connected to the inner side of the threaded groove.

[0012] Preferably, the gear adjustment mechanism includes a movable pin located inside the vertical cylinder. One end of the movable pin passes through a through hole, and the other end of the movable pin is located above the pressure plate. Multiple annular gear grooves are provided on the outer side of the movable pin. A crescent-shaped clamp is fitted around the outer side of the movable pin. One side of the crescent-shaped clamp fits into the inner groove of the functional groove, and the other side of the crescent-shaped clamp fits into the inner side of the pressure groove.

[0013] Preferably, a first hanging ring is fixedly connected to the top of the movable needle, a lifting rod is provided above the movable needle, a second hanging ring is fixedly connected to the bottom of the lifting rod, the second hanging ring is sleeved outside the first hanging ring, and a plastic ball is fixedly connected to the top of the lifting rod, the plastic ball extending to the outside of the oil limiting mechanism.

[0014] Preferably, the reset assembly includes an opening groove inside the pressure plate. A fixing plate is fixedly connected to both sides of the inner wall of the pressure plate. Two springs are fixedly connected to one side of the fixing plate. An L-shaped plate is fixedly connected to one end of each spring. One end of the L-shaped plate contacts the outer side of the crescent clamp. The outer side of the L-shaped plate is slidably connected in the gap between the pressure plate and the inner groove of the functional slot.

[0015] Preferably, the inner wall of the opening groove is provided with sliding grooves on both sides, and the outer sides of the L-shaped plate are fixedly connected with sliders, the outer side of the sliders being slidably connected to the inner side of the sliding grooves.

[0016] This invention provides a dual-mode controlled motorcycle carburetor. It has the following beneficial effects:

[0017] 1. This invention offers convenient gear adjustment without affecting the operation of other components. During adjustment, simply pull or press down the lever using the external plastic ball. The force is transmitted to the movable pin through the hanging ring structure. The beveled design of the contact area between the movable pin and the clamp reduces movement resistance. Gears can be easily adjusted without disassembling the entire carburetor. Furthermore, the lever and plastic ball pass through the gaps between the components, preventing interference with other parts and ensuring the normal operation of other carburetor components. This effectively improves adjustment efficiency and ease of use.

[0018] 2. This invention features a reliable structural connection and convenient maintenance. The core carrier and air intake component are rigidly connected to ensure the stability of the airflow channel. Both ends of the air intake component are detachably sealed to the motorcycle air intake system and the engine air intake, facilitating subsequent maintenance. The top component of the oil limiting mechanism is detachably connected to the core carrier, and the bottom of the air intake component is also detachably connected to the bottom shell, allowing for easy maintenance and cleaning of the internal components. At the same time, the oil limiting mechanism uses a specific structure to fix the pressure plate position, preventing it from shifting during operation and further improving the overall structural stability.

[0019] 3. This invention ensures precise and stable gear adjustment through a reset assembly. The spring in the reset assembly is always in a pre-stressed state, which can apply a stable reset force to specific plates. The sliding fit and limiting design of the plates and related structures can ensure that the plates move in a fixed direction, thereby pushing the clamp to accurately engage with different gear slots of the movable needle, realizing fast and stable gear switching. At the same time, the continuous force provided by the spring can ensure that the clamp and the gear slot are tightly fitted, avoiding gear loosening and improving the fuel supply stability of the carburetor under different operating conditions. Attached Figure Description

[0020] Figure 1 This is a front perspective view of the present invention;

[0021] Figure 2 This is a right-side perspective view of the present invention;

[0022] Figure 3 This is a schematic diagram of the top cover of the present invention;

[0023] Figure 4 This is a schematic diagram of the piston cylinder of the present invention;

[0024] Figure 5 This is a top view of the piston cylinder of the present invention;

[0025] Figure 6 This is a schematic diagram of the gear adjustment mechanism of the present invention;

[0026] Figure 7 for Figure 6 Enlarged view of point A in the middle;

[0027] Figure 8 This is a schematic diagram of the pressure plate of the present invention;

[0028] Figure 9 This is a schematic diagram of the structure of the reset component of the present invention.

[0029] The components include: 1. Vertical cylinder; 2. Air inlet pipe; 3. Air outlet; 4. Air inlet; 5. Oil limiting mechanism; 501. Top cover; 502. Through nozzle; 503. Spring 1; 504. Piston cylinder; 505. Functional groove; 506. Pressure plate; 507. Perforation; 508. Fitting groove; 509. Threaded groove; 510. Folding plate; 511. Mounting hole; 512. Stud; 513. Pressure groove; 6. Gear adjustment mechanism; 601. Movable pin; 602. Annular gear groove; 603. Crescent clamp; 604. Hanging ring 1; 605. Lifting rod; 606. Hanging ring 2; 607. Plastic ball; 7. Reset assembly; 701. Opening groove; 702. Fixing plate; 703. Spring 2; 704. L-shaped plate; 705. Slider; 706. Slide groove; 8. Bottom shell. Detailed Implementation

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see the appendix Figure 1 -Appendix Figure 8 This invention provides a dual-mode control motorcycle carburetor, including a vertical cylinder 1. An air inlet pipe 2 is fixedly connected to the bottom of the vertical cylinder 1. One end of the air inlet pipe 2 has an air inlet 4, and the other end of the air inlet pipe 2 has an air outlet 3. An oil limiting mechanism 5 is provided inside the vertical cylinder 1. A gear adjustment mechanism 6 is provided inside the vertical cylinder 1. A reset component 7 is provided outside the gear adjustment mechanism 6. A bottom shell 8 is detachably connected to the bottom of the air inlet pipe 2.

[0032] The oil limiting mechanism 5 includes a top cover 501, which is detachably connected to the top of the vertical cylinder 1. A through-hole 502 is fixedly connected to the top of the top cover 501. A spring 503 is located at the bottom of the top cover 501 inside the vertical cylinder 1. A piston cylinder 504 is slidably connected to the inner side of the vertical cylinder 1. A functional groove 505 is formed at the top of the piston cylinder 504. One end of the spring 503 contacts the bottom of the top cover 501, and the other end contacts the inner side of the functional groove 505. The inner side of the functional groove 505 has a concave... The groove is equipped with a pressure plate 506. A through hole 507 is opened through the center of the pressure plate 506. A pressure groove 513 is opened at the bottom of the pressure plate 506. Two fitting grooves 508 are opened on the inner side of the functional groove 505. Two threaded grooves 509 are opened on the inner side of the fitting grooves 508. Two folding plates 510 are placed on the top of the pressure plate 506. The outer side of the folding plate 510 is engaged with the inner side of the fitting groove 508. Two mounting holes 511 are opened inside the folding plate 510. A stud 512 is slidably connected to the inner side of the mounting hole 511. The bottom end of the stud 512 is threadedly connected to the inner side of the threaded groove 509.

[0033] The gear adjustment mechanism 6 includes a movable pin 601, which is located inside the vertical cylinder 1. One end of the movable pin 601 passes through the through hole 507, and the other end of the movable pin 601 is located above the pressure plate 506. Multiple annular gear slots 602 are provided on the outer side of the movable pin 601. A crescent clamp 603 is fitted on the outside of the movable pin 601. One side of the crescent clamp 603 fits into the inner groove of the functional groove 505, and the other side of the crescent clamp 603 fits into the inner side of the pressure groove 513. A first hanging ring 604 is fixedly connected to the top of the movable pin 601. A lifting rod 605 is provided above the movable pin 601. A second hanging ring 606 is fixedly connected to the bottom of the lifting rod 605. The second hanging ring 606 is fitted outside the first hanging ring 604. A plastic ball 607 is fixedly connected to the top of the lifting rod 605. The plastic ball 607 extends to the outside of the oil limiting mechanism 5.

[0034] The reset assembly 7 includes an opening groove 701, which is formed inside the pressure plate 506. A fixing plate 702 is fixedly connected to both sides of the inner wall of the pressure plate 506. Two springs 703 are fixedly connected to one side of the fixing plate 702. An L-shaped plate 704 is fixedly connected to one end of each spring 703. One end of the L-shaped plate 704 contacts the outer side of the crescent clamp 603. The outer side of the L-shaped plate 704 is slidably connected in the gap between the pressure plate 506 and the inner groove of the functional groove 505. Sliding grooves 706 are formed on both sides of the inner wall of the opening groove 701. Sliding blocks 705 are fixedly connected to both sides of the outer side of the L-shaped plate 704. The outer side of the sliding blocks 705 is slidably connected to the inner side of the sliding grooves 706.

[0035] Specifically, the vertical cylinder 1 serves as the core mounting carrier, and its bottom is rigidly connected to the air intake pipe 2 by welding or bolting to ensure the stability of the airflow channel. The air inlet 4 at one end of the air intake pipe 2 is detachably connected to the motorcycle's air intake system via a flange or clamp, while the air outlet 3 at the other end is connected to the engine's air intake end in the same detachable sealed manner to ensure the airtightness of the air intake path.

[0036] In the fuel limiting mechanism 5, the top cover 501 is detachably connected to the top of the vertical cylinder 1 by means of threaded connection or snap-fit, which facilitates the maintenance and replacement of the internal components. The through-hole 502 on the top of the top cover 501 is an integrally formed structure with the top cover 501, and the through hole inside is used to connect with the external fuel control pipeline to achieve precise control of fuel delivery.

[0037] One end of spring 503 is in surface contact with the bottom of top cover 501, and the other end is in surface contact with the inner side of functional groove 505 on top of piston cylinder 504. Spring 503 is always in a pre-compressed state, providing a stable restoring force for piston cylinder 504. The outer side of piston cylinder 504 and the inner side of vertical cylinder 1 are slidably connected through a precise clearance fit, ensuring that piston cylinder 504 moves smoothly along the axial direction within vertical cylinder 1.

[0038] The groove on the inner side of the functional slot 505 is clearance-fitted with the pressure plate 506, allowing the pressure plate 506 to move slightly within the groove. The through hole 507 penetrating the center of the pressure plate 506 is clearance-fitted with the movable pin 601, ensuring that the movable pin 601 can move axially along the through hole 507. Two fitting slots 508 on the inner side of the functional slot 505 are interference-fitted with the outer side of the folding plate 510. The top of the folding plate 510 fits against the bottom of the pressure plate 506. The mounting hole 511 inside the folding plate 510 is clearance-fitted with the stud 512. The bottom end of the stud 512 is threadedly connected to the threaded groove 509 on the inner side of the fitting slot 508. By tightening the stud 512, the folding plate 510 can be fixed within the fitting slot 508, thereby stabilizing the position of the pressure plate 506 and preventing it from shifting during carburetor operation.

[0039] In the gear adjustment mechanism 6, the movable pin 601 is located inside the vertical cylinder 1, and one end of the movable pin 601 passes through the through hole 507 of the pressure plate 506 and extends to the bottom of the piston cylinder 504. The other end of the movable pin 601 is located above the pressure plate 506. Multiple annular gear grooves 602 opened on the outer side of the movable pin 601 are engaged with the crescent clamp 603. One side of the crescent clamp 603 is tightly fitted with the inner groove of the functional groove 505, and the other side is tightly fitted with the inner side of the pressure groove 513 at the bottom of the pressure plate 506. The part where the annular gear groove 602 contacts the crescent clamp 603 is designed with a bevel to reduce the resistance when the movable pin 601 moves.

[0040] The top of the movable pin 601 is fixedly connected to the first hanging ring 604 by welding or integral molding. The bottom of the lifting rod 605 is also fixedly connected to the second hanging ring 606 by welding or integral molding. The second hanging ring 606 is sleeved on the outside of the first hanging ring 604. The two are movably connected to ensure that the force of the lifting rod 605 can be transmitted to the first hanging ring 604 through the second hanging ring 606, thereby driving the movable pin 601 to move.

[0041] The top of the lifting rod 605 is fixed to the plastic ball 607 by injection molding or threaded connection. The plastic ball 607 extends to the outside of the oil limiting mechanism 5, and the plastic ball 607 and the lifting rod 605 pass through the gap between the vertical cylinder 1, the air inlet pipe 2 and multiple components without interfering with other components, ensuring the normal operation of other components. In the reset assembly 7, the opening slot 701 is opened inside the pressure plate 506, and the opening slot 701 and the pressure plate 506 are integrally formed.

[0042] The fixing plates 702 on both sides of the inner wall of the pressure plate 506 are fixedly connected to the pressure plate 506 by welding or integral molding. One side of the fixing plate 702 is fixed to one end of the two springs 703 by welding or hooking. The other end of the two springs 703 is also fixed to one side of the L-shaped plate 704 by welding or hooking. The springs 703 are always in a pre-stretched or pre-compressed state to provide a restoring elastic force for the L-shaped plate 704.

[0043] One end of the L-shaped plate 704 is in close contact with the outer side of the crescent clamp 603. The outer side of the L-shaped plate 704 is in clearance fit with the gap formed by the pressure plate 506 and the inner groove of the functional slot 505, ensuring that the L-shaped plate 704 can slide smoothly in the gap. The sliding grooves 706 on both sides of the inner wall of the opening slot 701 are integrally formed with the pressure plate 506. The sliders 705 on both sides of the outer side of the L-shaped plate 704 are fixed to the L-shaped plate 704 by welding or integral forming. The outer side of the slider 705 is in clearance fit with the inner side of the sliding groove 706. By sliding the slider 705 in the sliding groove 706, the movement direction of the L-shaped plate 704 is limited, ensuring that the L-shaped plate 704 can move in a fixed direction. This ensures that the elastic force of the second spring 703 can be accurately applied to the L-shaped plate 704, pushing the L-shaped plate 704 to quickly reset, so that the crescent clamp 603 can be stably inserted into the other annular gear slots 602 of the movable needle 601, completing the gear adjustment. The bottom of the air inlet pipe 2 is detachably connected to the bottom shell 8 by bolts or snaps, which facilitates the inspection and cleaning of the components inside the air inlet pipe 2 and the bottom of the vertical cylinder 1.

[0044] Working principle: In cold winter conditions, the fuel supply efficiency of the carburetor will decrease. Generally, the engagement position of the movable needle 601 and the crescent clamp 603 can be adjusted to improve the carburetor's processing efficiency. First, by pinching the plastic ball 607, the lifting lever 605 can be pulled up or down, so that the second hanging ring 606 at the bottom of the lifting lever 605 contacts the first hanging ring 604 to transmit force. Since the contact area between the annular gear slot 602 and the crescent clamp 603 is designed with a bevel, the movable needle 601 can be moved easily, so the gear can be easily adjusted without deliberately disassembling the entire carburetor.

[0045] Furthermore, when adjusting the gear, the plastic ball 607 and the lifting rod 605 pass through the gap between the vertical cylinder 1, the air inlet pipe 2, and multiple components, without affecting the operation of other components. Moreover, the two folding plates 510 installed in the piston cylinder 504 can keep the position of the pressure plate 506 stable. In addition, when adjusting the position of the movable pin 601, the elastic force of the second spring 703 can act on the L-shaped plate 704, allowing it to quickly reset, thereby pushing the crescent clamp 603 into the other annular gear slot 602 to complete the gear adjustment.

Claims

1. A dual-mode controlled motorcycle carburetor, comprising a vertical cylinder (1), characterized in that, The bottom of the vertical cylinder (1) is fixedly connected to an air inlet pipe (2). One end of the air inlet pipe (2) is provided with an air inlet (4), and the other end of the air inlet pipe (2) is provided with an air outlet (3). The interior of the vertical cylinder (1) is provided with an oil limiting mechanism (5). The interior of the vertical cylinder (1) is provided with a gear adjustment mechanism (6). The exterior of the gear adjustment mechanism (6) is provided with a reset component (7). The bottom of the air inlet pipe (2) is detachably connected to a bottom shell (8).

2. The dual-mode controlled motorcycle carburetor according to claim 1, characterized in that, The oil limiting mechanism (5) includes a top cover (501), which is detachably connected to the top of the vertical cylinder (1). A nozzle (502) is fixedly connected to the top of the top cover (501), and a through hole is provided inside the nozzle (502). A spring (503) is provided at the bottom of the (501).

3. A dual-mode controlled motorcycle carburetor according to claim 2, characterized in that, The spring (503) is located inside the vertical cylinder (1). The piston cylinder (504) is slidably connected to the inner side of the vertical cylinder (1). A functional groove (505) is provided on the top of the piston cylinder (504). One end of the spring (503) is in contact with the bottom of the top cover (501), and the other end of the spring (503) is in contact with the inner side of the functional groove (505).

4. A dual-mode controlled motorcycle carburetor according to claim 3, characterized in that, A pressure plate (506) is provided inside the groove on the inner side of the functional slot (505). A through hole (507) is provided through the center of the pressure plate (506), and a pressure groove (513) is provided at the bottom of the pressure plate (506).

5. A dual-mode controlled motorcycle carburetor according to claim 4, characterized in that, The inner side of the functional slot (505) has two fitting slots (508), the inner side of the fitting slots (508) has two threaded slots (509), and the top of the pressure plate (506) has two folding plates (510).

6. A dual-mode controlled motorcycle carburetor according to claim 5, characterized in that, The outer side of the folding plate (510) is engaged with the inner side of the fitting groove (508). The folding plate (510) has two mounting holes (511) inside. A stud (512) is slidably connected to the inner side of the mounting hole (511). The bottom end of the stud (512) is threadedly connected to the inner side of the threaded groove (509).

7. A dual-mode controlled motorcycle carburetor according to claim 1, characterized in that, The gear adjustment mechanism (6) includes a movable pin (601), which is located inside the vertical cylinder (1). One end of the movable pin (601) passes through a through hole (507), and the other end of the movable pin (601) is located above the pressure plate (506). Multiple annular gear slots (602) are provided on the outer side of the movable pin (601). A crescent-shaped clamp (603) is fitted on the outside of the movable pin (601). One side of the crescent-shaped clamp (603) fits into the inner groove of the functional groove (505), and the other side of the crescent-shaped clamp (603) fits into the inner side of the pressure groove (513).

8. A dual-mode controlled motorcycle carburetor according to claim 7, characterized in that, The top of the movable needle (601) is fixedly connected to a first hanging ring (604), a lifting rod (605) is provided above the movable needle (601), a second hanging ring (606) is fixedly connected to the bottom of the lifting rod (605), the second hanging ring (606) is sleeved on the outside of the first hanging ring (604), a plastic ball (607) is fixedly connected to the top of the lifting rod (605), and the plastic ball (607) extends to the outside of the oil limiting mechanism (5).

9. A dual-mode controlled motorcycle carburetor according to claim 4, characterized in that, The reset assembly (7) includes an opening groove (701) which is opened inside the pressure plate (506). A fixing plate (702) is fixedly connected to both sides of the inner wall of the pressure plate (506). Two springs (703) are fixedly connected to one side of the fixing plate (702). An L-shaped plate (704) is fixedly connected to one end of the two springs (703). One end of the L-shaped plate (704) is in contact with the outer side of the crescent clamp (603). The outer side of the L-shaped plate (704) is slidably connected in the gap between the pressure plate (506) and the inner groove of the functional groove (505).

10. A dual-mode controlled motorcycle carburetor according to claim 9, characterized in that, The inner walls of the opening groove (701) are provided with sliding grooves (706) on both sides, and the outer sides of the L-shaped plate (704) are fixedly connected with sliders (705), and the outer side of the sliders (705) is slidably connected to the inner side of the sliding grooves (706).

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