High-Responsive Racing Carburetor Dual-Cavity Throttle
By introducing a micro-motor driven gear system and scraper structure into the dual-chamber throttle body of a racing carburetor, the problem of carbon buildup in the throttle body bearings has been solved, enabling automatic cleaning of carbon deposits and ensuring stable operation and safety of the throttle body.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUDING FUHAI CARBURETOR
- Filing Date
- 2025-09-16
- Publication Date
- 2026-06-30
AI Technical Summary
During use, carbon buildup can easily accumulate on the throttle plate bearings and the inner walls of the pipes in racing carburetors, leading to increased rotational resistance and affecting throttle linearity and driving safety.
A high-responsive dual-chamber throttle valve for racing carburetors is designed. A micro motor drives a rotating gear, which in turn drives a reduction gear and an incomplete gear to control the opening and closing of the throttle plate. A scraper is also provided to remove carbon deposits from the inner wall of the chamber, ensuring stable operation of the throttle plate.
It effectively removes carbon deposits, prevents hardening, reduces the rotational resistance of the throttle plate, ensures the safety and reliability of the device, avoids malfunctions caused by jamming, and improves the safety of use.
Smart Images
Figure CN224432672U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of racing engine intake systems, and in particular to a high-responsive dual-chamber throttle valve for racing carburetors. Background Technology
[0002] Dual-chamber throttle valves are mainly used to improve the intake efficiency of the engine under different operating conditions, thereby improving engine performance and fuel economy. The design principle is to replace the traditional single throttle valve with two independent throttle valves, which control the two intake passages of the engine respectively. At low speeds, the two throttle valves can be closed at the same time, forming a smaller intake passage, which improves the engine's torque and low-speed response performance; at high speeds, the two throttle valves can be opened at the same time, forming a larger intake passage, which improves the engine's high-speed power and fuel economy.
[0003] In the long-term use of existing racing carburetor dual-chamber throttle valves, the connection between the throttle plate bearing and the inner wall of the pipe is prone to carbon buildup. When the racing engine is running, carbon particles produced by incomplete combustion of fuel, oil mist and dust in the engine compartment mix and gradually adhere to the gap between the outer ring of the bearing and the inner wall of the pipe. As the usage time increases, the carbon deposits harden and fill the gap, resulting in increased bearing rotation resistance. This can cause throttle plate operation to become sluggish, affecting throttle linearity, or even cause the bearing to seize up, preventing the throttle plate from opening and closing normally. In this case, the engine may experience idle speed loss or high-speed power interruption, seriously threatening the safety of racing. Utility Model Content
[0004] In view of the above-mentioned problem of carbon buildup, this utility model is proposed.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-response racing carburetor dual-chamber throttle valve, including a body, a main chamber and a secondary chamber are provided at the top of the body, the main chamber and the secondary chamber are fitted together, an installation groove is provided in the body, a rotating gear is rotatably connected in the installation groove, a reduction gear is meshed on the outer wall of the rotating gear, an incomplete gear is meshed on the outer wall of the reduction gear, a connecting post is fixedly connected to the axial end of the reduction gear facing the main chamber, two evenly distributed connecting gears are fixedly connected to the circumferential surface of the connecting post, a connecting rod penetrating the main chamber and the secondary chamber is fixedly connected to the axial end of the incomplete gear facing the main chamber, and two throttle blades that are respectively fitted to the inner ring surfaces of the main chamber and the secondary chamber are fixedly connected to the circumferential surface of the connecting rod, and two up-and-down sliding scrapers are provided on the inner ring surfaces of the main chamber and the secondary chamber.
[0006] As a preferred embodiment of the high-response racing carburetor dual-chamber throttle valve of this utility model, a micro motor is fixedly installed at the top of the body, and the output end of the micro motor is fixedly connected to the end of the rotating gear facing the main chamber.
[0007] As a preferred embodiment of the high-responsive racing carburetor dual-chamber throttle valve of this utility model, the throttle plate has two arc-shaped holes distributed in the circumference of the throttle plate as a mirror image of the connecting rod, and the inner ring surface of the scraper is provided with a protrusion that is slidably connected to the arc-shaped holes.
[0008] As a preferred embodiment of the high-response racing carburetor dual-chamber throttle valve of this utility model, the scraper near the end of the connecting gear is fixedly connected to multiple fixing plates, the outer wall of the connecting gear meshes with the multiple fixing plates, and a sliding ring is fixedly connected to the top of every two scrapers.
[0009] As a preferred embodiment of the high-responsive racing carburetor dual-chamber throttle valve of this utility model, a sealing ring is installed on the circumferential surface of the connecting rod, the sealing ring is located between the main chamber and the auxiliary chamber, and a return spring is connected to the end of the incomplete gear facing the throttle plate.
[0010] As a preferred embodiment of the high-response racing carburetor dual-chamber throttle valve of this utility model, a contact block is fixedly connected to the end of the incomplete gear away from the return spring, a position sensor is slidably connected to the surface of the contact block, and the position sensor is fixedly connected to the mounting groove.
[0011] The beneficial effects of this utility model are:
[0012] A micro motor drives a rotating gear, which in turn drives a connecting rod to rotate via a reduction gear and an incomplete gear. This controls the opening and closing of the throttle body in the main and auxiliary chambers. Simultaneously, the reduction gear drives a scraper to slide through a connecting column and a connecting gear. Each time the throttle body opens, the scraper removes carbon deposits from the inner walls of the main and auxiliary chambers, preventing them from hardening over time and causing the throttle body to jam. This reduces the rotational resistance of the throttle body, ensures stable throttle operation, avoids malfunctions caused by jamming, and improves the safety and reliability of the device. Furthermore, the scraper cleaning action requires no additional intervention, making it suitable for racing car applications. Attached Figure Description
[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0015] Figure 2 This is a schematic diagram of the installation structure of the reduction gear of this utility model.
[0016] Figure 3This is a schematic diagram of the overall structure of the scraper of this utility model.
[0017] Figure 4 This is a schematic diagram of the installation structure of the throttle plate of this utility model.
[0018] Figure 5 This is a schematic diagram of the mounting structure of the position sensor of this utility model.
[0019] Explanation of reference numerals in the attached drawings: 1. Body; 2. Main cavity; 3. Secondary cavity; 4. Micro motor; 5. Rotating gear; 6. Reduction gear; 7. Incomplete gear; 8. Connecting column; 9. Connecting gear; 10. Sliding ring; 11. Scraper; 12. Fixing plate; 13. Connecting rod; 14. Throttle plate; 15. Sealing ring; 16. Return spring; 17. Position sensor; 18. Contact block. Detailed Implementation
[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0021] Example 1
[0022] Reference Figures 1-3 This is the first embodiment of the present invention, which provides a high-responsive racing carburetor dual-chamber throttle valve, including a body 1. The top of the body 1 has a main chamber 2 and a secondary chamber 3, which are fitted together. The body 1 has an installation groove, and a rotating gear 5 is rotatably connected in the installation groove. A reduction gear 6 meshes with the outer wall of the rotating gear 5. An incomplete gear 7 meshes with the outer wall of the reduction gear 6. A connecting post 8 is fixedly connected to the axial end of the reduction gear 6 facing the main chamber 2. Two evenly distributed connecting gears 9 are fixedly connected to the circumferential surface of the connecting post 8. A connecting rod 13 that penetrates the main chamber 2 and the secondary chamber 3 is fixedly connected to the axial end of the incomplete gear 7 facing the main chamber 2. Two throttle plates 14 that respectively fit with the inner ring surfaces of the main chamber 2 and the secondary chamber 3 are fixedly connected to the circumferential surface of the connecting rod 13. The inner ring surfaces of the main chamber 2 and the secondary chamber 3 are each provided with two vertically sliding scrapers 11.
[0023] A micro motor 4 is fixedly installed at the top of the body 1, and the output end of the micro motor 4 is fixedly connected to the end of the rotating gear 5 facing the main cavity 2.
[0024] The throttle plate 14 has two arc-shaped holes on its circumferential surface, which are mirror images of the connecting rod 13. The inner ring surface of the scraper 11 has a protrusion that is slidably connected to the arc-shaped holes.
[0025] A number of fixed plates 12 are fixedly connected to the scraper 11 near one end of the connecting gear 9. The outer wall of the connecting gear 9 meshes with the multiple fixed plates 12. A sliding ring 10 is fixedly connected to the top of every two scrapers 11.
[0026] During use, the throttle control signal is transmitted to the micro motor 4, triggering carbon deposit cleaning and air intake preparation actions. After receiving the throttle control signal, the micro motor 4 starts, and its output end drives the rotating gear 5, which is fixedly connected to it, to rotate in the mounting slot. The rotating gear 5 meshes with the outer wall of the reduction gear 6, so it will synchronously drive the reduction gear 6 to rotate along its own axis.
[0027] Subsequently, when the reduction gear 6 rotates, it will drive the connecting column 8 to rotate synchronously. The rotation of the connecting column 8 will directly drive the two connecting gears 9 to rotate in the same direction. Since the scraper 11 near one end of the connecting gear 9 is fixedly connected to multiple fixed plates 12, and the outer wall of the connecting gear 9 meshes with the fixed plates 12, the rotation of the connecting gear 9 will drive the fixed plates 12 to rise vertically through meshing transmission, thereby driving the scraper 11 fixed thereto to slide upward on the inner ring surface of the main cavity 2 and the secondary cavity 3.
[0028] Meanwhile, a sliding ring 10 is fixedly connected to the top of each pair of scrapers 11. When the scraper 11 near the connecting gear 9 rises, it will drive the scraper 11 on the other side of the main cavity 2 and the auxiliary cavity 3 to rise synchronously through the linkage of the sliding ring 10. The two scrapers 11 are tightly attached to the inner ring surface of the main cavity 2 and the auxiliary cavity 3 respectively. During the rising process, the inner wall of the scraper 11 will scrape the carbon deposits and dust attached to the inner wall of the main cavity 2 and the auxiliary cavity 3. Since the carbon deposits and dust are scraped every time it is started, hardening is avoided. Loose dust will be scraped off directly. Finally, the scraped carbon deposits and dust will slide down the inner wall of the cavity to the bottom of the machine body 1, which is convenient for subsequent personnel to clean. This completes the cleaning of carbon deposits on the inner wall of the main cavity 2 and the auxiliary cavity 3, clearing obstacles for subsequent air intake.
[0029] If the driver releases the throttle, the micro motor 4 will rotate in the opposite direction, driving the connecting gear 9 to rotate in the opposite direction through the aforementioned gear transmission path. This causes the fixed plate 12 to drive the scraper 11 to descend and reset along the inner walls of the main cavity 2 and the secondary cavity 3, waiting for the next cleaning action. The entire cleaning process is synchronized with the throttle operation and requires no additional manual control.
[0030] Example 2
[0031] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that a sealing ring 15 is installed on the circumferential surface of the connecting rod 13. The sealing ring 15 is located between the main cavity 2 and the secondary cavity 3. A return spring 16 is connected to the end of the incomplete gear 7 facing the throttle plate 14.
[0032] A contact block 18 is fixedly connected to the end of the incomplete gear 7 away from the return spring 16. A position sensor 17 is slidably connected to the surface of the contact block 18. The position sensor 17 is fixedly connected to the mounting groove.
[0033] During use, when the reduction gear 6 rotates, it drives the incomplete gear 7 to rotate along its own axis in the mounting slot. The rotation of the incomplete gear 7 will directly drive the connecting rod 13 to rotate synchronously. When the connecting rod 13 rotates, it will drive the two throttle plates 14 to rotate along the radial surfaces of the main cavity 2 and the secondary cavity 3, gradually opening the intake angle. At this time, outside air can enter the carburetor through the openings of the main cavity 2 and the secondary cavity 3, mix with fuel, and provide power to the engine.
[0034] Meanwhile, a return spring 16 is connected to the end of the incomplete gear 7 facing the throttle plate 14. When the incomplete gear 7 rotates, it pulls the return spring 16 to produce elastic deformation. When the throttle plate 14 needs to be closed later, the return spring 16 can release the elastic force to drive the incomplete gear 7 to rotate in the opposite direction, so that the throttle plate 14 can be automatically reset.
[0035] Furthermore, when the incomplete gear 7 rotates, it will drive the contact block 18 to rotate synchronously. The surface of the contact block 18 is slidably connected to the position sensor 17. The contact block 18 will continuously slide along the detection surface of the position sensor 17. The position sensor 17 can detect the position of the contact block 18 in real time, thereby determining the rotation angle of the incomplete gear 7, the connecting rod 13 and the throttle plate 14. When the throttle plate 14 rotates to the intake angle that matches the current throttle opening, the contact block 18 slides to the "target position" preset by the position sensor 17. The position sensor 17 will send a signal to the micro motor 4 to control the micro motor 4 to stop rotating. The micro motor 4 is a geared motor. The torque of the return spring 18 is insufficient to drive the throttle plate 14 to reset. At this time, the throttle plate 14 maintains the current opening and closing angle to stably intake air, avoiding the throttle plate 14 from being over-opened or closed due to the continuous operation of the motor, and ensuring that the intake air volume is accurately matched with the throttle demand.
[0036] When the driver releases the accelerator, the position sensor 17 detects the reset signal of the contact block 18 and controls the micro motor 4 to rotate in the opposite direction again. This drives the throttle plate 14 to close through the incomplete gear 7 and the connecting rod 13. At the same time, the return spring 16 assists in the reset, completing the entire intake control cycle.
[0037] The remaining structure is the same as that in Example 1.
[0038] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A high-response racing carburetor dual-chamber throttle valve, comprising a body (1), wherein a main chamber (2) and a secondary chamber (3) are fixedly connected to the top of the body (1), the main chamber (2) and the secondary chamber (3) are fitted together, and an installation groove is provided inside the body (1), characterized in that: A rotating gear (5) is rotatably connected in the mounting slot. A reduction gear (6) meshes with the outer wall of the rotating gear (5). An incomplete gear (7) meshes with the outer wall of the reduction gear (6). A connecting column (8) is fixedly connected to the axial end of the reduction gear (6) facing the main cavity (2). Two evenly distributed connecting gears (9) are fixedly connected to the circumferential surface of the connecting column (8). A connecting rod (13) penetrating the main cavity (2) and the secondary cavity (3) is fixedly connected to the axial end of the incomplete gear (7) facing the main cavity (2). Two throttle plates (14) that respectively fit against the inner ring surfaces of the main cavity (2) and the secondary cavity (3) are fixedly connected to the circumferential surface of the connecting rod (13). Two vertically sliding scrapers (11) are provided on the inner ring surfaces of the main cavity (2) and the secondary cavity (3).
2. The high response racing carburetor dual- bore throttle body of claim 1, wherein: A micro motor (4) is fixedly installed at the top of the body (1), and the output end of the micro motor (4) is fixedly connected to the end of the rotating gear (5) facing the main cavity (2).
3. The high response racing carburetor dual- bore throttle body of claim 1, wherein: The throttle plate (14) has two arc-shaped holes on its circumferential surface, which are mirror images of the connecting rod (13). The inner ring surface of the scraper (11) has a protrusion that is slidably connected to the arc-shaped holes.
4. The high-response racing carburetor dual-chamber throttle valve according to claim 1, characterized in that: A scraper (11) near one end of the connecting gear (9) is fixedly connected to a plurality of fixed plates (12). The outer wall of the connecting gear (9) meshes with the plurality of fixed plates (12). A sliding ring (10) is fixedly connected to the top of each pair of scrapers (11).
5. The high-response racing carburetor dual-chamber throttle valve according to claim 1, characterized in that: A sealing ring (15) is installed on the circumferential surface of the connecting rod (13). The sealing ring (15) is located between the main cavity (2) and the secondary cavity (3). A return spring (16) is connected to the end of the incomplete gear (7) facing the throttle plate (14).
6. The high-response racing carburetor dual-chamber throttle valve according to claim 5, characterized in that: The incomplete gear (7) is fixedly connected to a contact block (18) at the end away from the return spring (16). A position sensor (17) is slidably connected to the surface of the contact block (18). The position sensor (17) is fixedly connected to the mounting groove.