Intelligent control device for carburetor

Abstract

The utility model relates to the technical field of carburetors, and discloses an intelligent control device of a carburetor, which solves the problem that the existing carburetor is poor in control effect, and comprises a stepping driver, a throttle valve opening and closing control assembly and an oil needle fine adjustment control assembly, and the throttle valve opening and closing control assembly is connected to one end of the top of a carburetor body. A plunger is arranged in the carburetor body, a floater is arranged at the bottom end in the carburetor body, a main oil injection hole and an idling oil injection hole are formed in the floater, an oil needle is arranged in the main oil injection hole, the oil needle fine adjustment control assembly is connected between the oil needle and the plunger, and the throttle valve opening and closing control assembly is composed of a first stepping motor, a small driving gear, a large driven gear and a rotating shaft. The oil needle fine adjustment control assembly is composed of a second stepping motor, a worm, a rotating shaft, a semicircular worm gear, a semicircular gear and a rack. By means of the control device, intelligent control over opening and closing of the throttle valve can be achieved through the stepping motor and an existing engine control system, and the control accuracy is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of carburetors, in particular to an intelligent control device for a carburetors. Background Art

[0002] A carburetor is a mechanical device that mixes a certain proportion of gasoline and air under the vacuum created by the working engine. As a precision mechanical device, the carburetor uses the kinetic energy of the inhaled air flow to atomize the gasoline. Its important role in the engine can be called the "heart" of the engine.

[0003] When the carburetor is working, it is necessary to control the intake volume by controlling the opening and closing of the throttle. The conventional carburetor throttle is generally connected to a linkage rod or a soft steel wire, and the other end of the linkage rod or the soft steel wire is connected to the accelerator pedal. The opening and closing state of the throttle is adjusted by the accelerator pedal. This method does not accurately control the intake volume and cannot put the engine in the best working state. Therefore, the present application proposes a carburetor intelligent control device to improve the existing carburetor. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides an intelligent carburetor control device, which effectively solves the problem of poor control effect of the prior carburetor.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a carburetor intelligent control device, comprising a stepper driver, a throttle opening and closing control component and an oil needle fine-tuning control component, wherein the stepper driver is electrically connected to the engine control system, the throttle opening and closing control component and the oil needle fine-tuning control component are both electrically connected to the stepper driver, the throttle opening and closing control component is fixedly connected to one end of the top of the carburetor body and is connected to the throttle, a plunger is arranged at the middle position inside the carburetor body, a float is arranged at the bottom end inside the carburetor body, a main oil injection hole and an idle oil injection hole are arranged on the float, an oil needle is arranged inside the main oil injection hole, the top end of the oil needle slides and penetrates the plunger, and the oil needle fine-tuning control component is connected between the oil needle and the plunger;

[0006] The throttle opening and closing control component is composed of a stepper motor 1, a driving pinion, a driven large gear and a rotating shaft. The stepper motor 1 is fixedly connected to the top of the carburetor body, the driving pinion is fixedly connected to the output shaft of the stepper motor 1, the rotating shaft is inserted into the carburetor body and fixedly connected to the throttle, and the driven large gear is fixedly connected to the top of the rotating shaft and meshed with the driving pinion.

[0007] The oil needle fine-tuning control assembly consists of a second stepper motor, a worm, a rotating shaft, a semicircular worm wheel, a semicircular gear and a rack. The second stepper motor is fixedly connected to the inside of the plunger, the worm is fixedly connected to the output shaft of the second stepper motor, the rotating shaft is rotatably connected to the inside of the plunger, the semicircular worm wheel and the semicircular gear are respectively welded to both sides of the rotating shaft, the semicircular worm wheel is meshed with the worm, and the rack is fixedly connected to the top of one side of the oil needle and meshed with the semicircular gear.

[0008] Preferably, the stepper motor 1 is connected to the stepper driver via a wire 1, and the stepper motor 2 is connected to the stepper driver via a wire 2.

[0009] Preferably, a protective cover is fixedly provided at one end of the top of the carburetor body, and a motor mounting seat 1 connected to a stepper motor 1 is fixedly provided inside the protective cover.

[0010] Preferably, an installation inner groove is provided inside the plunger, a motor mounting seat 2 connected to the stepper motor 2 is fixedly provided inside the installation inner groove, and a threading groove connected to the installation inner groove is provided at the top end of the plunger.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) During operation, the stepper driver can be electrically connected to the engine control system, thereby receiving the electrical signal of the engine control system, and then realizing precise control and adjustment of the throttle opening and closing control component and the oil needle fine-tuning control component;

[0013] (2) By setting up a throttle opening and closing control component consisting of a stepper motor, a driving pinion, a driven large gear and a rotating shaft, it is possible to accurately adjust the opening and closing of the throttle and the opening and closing state, thereby achieving accurate adjustment of the intake volume, so that the engine can achieve optimal performance;

[0014] (3) By setting up an oil needle fine-tuning control assembly consisting of a second stepping motor, a worm, a rotating shaft, a semicircular worm wheel, a semicircular gear and a rack, the height of the oil needle can be fine-tuned, thereby facilitating automatic adjustment of the oil supply amount, thereby fine-tuning the oil supply amount so that the oil supply amount matches the air intake amount. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0016] In the attached picture:

[0017] Figure 1This is a schematic diagram of the connection structure between the intelligent carburetor control device and the carburetor body of the utility model;

[0018] Figure 2 This is the second schematic diagram of the connection structure between the intelligent carburetor control device and the carburetor body of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the throttle opening and closing control component of the utility model;

[0020] Figure 4 For this utility model Figure 2 A partial enlarged view of the middle A;

[0021] In the figure: 1. stepper driver; 2. throttle opening and closing control component; 3. oil needle fine-tuning control component; 4. carburetor body; 5. throttle; 6. plunger; 7. float; 8. main oil injection hole; 9. idle oil injection hole; 10. oil needle; 11. stepper motor one; 12. driving small gear; 13. driven large gear; 14. rotating shaft; 15. stepper motor two; 16. worm; 17. rotating shaft; 18. semicircular worm gear; 19. semicircular gear; 20. rack; 21. wire one; 22. wire two; 23. protective cover; 24. motor mounting seat one; 25. mounting inner groove; 26. motor mounting seat two; 27. threading groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] Depend on Figures 1 to 4 The utility model provides a carburetor intelligent control device, comprising a stepper driver 1, a throttle opening and closing control component 2 and an oil needle fine-tuning control component 3, the stepper driver 1 is electrically connected to the engine control system, the throttle opening and closing control component 2 and the oil needle fine-tuning control component 3 are both electrically connected to the stepper driver 1, the throttle opening and closing control component 2 is fixedly connected to one end of the top of the carburetor body 4 and is connected to the throttle 5, a plunger 6 is arranged at the middle position inside the carburetor body 4, a float 7 is arranged at the bottom end inside the carburetor body 4, a main oil injection hole 8 and an idle oil injection hole 9 are opened on the float 7, an oil needle 10 is arranged inside the main oil injection hole 8, the top end of the oil needle 10 slides and penetrates the plunger 6, and the oil needle fine-tuning control component 3 is connected between the oil needle 10 and the plunger 6;

[0024] When in use, the stepper driver 1 is connected to the engine control system, and the engine control system transmits an electrical signal to the stepper driver 1, and the throttle opening and closing control component 2 and the oil needle fine-tuning control component 3 are precisely controlled by the stepper driver 1. The throttle opening and closing control component 2 adjusts the opening and closing of the throttle 5, thereby adjusting the intake volume, and the oil needle fine-tuning control component 3 can fine-tune the position of the oil needle 10, thereby fine-tuning the oil supply volume;

[0025] The throttle opening and closing control assembly 2 is composed of a stepper motor 11, a driving pinion 12, a driven large gear 13 and a rotating shaft 14. The stepper motor 11 is fixedly connected to the top of the carburetor body 4, the driving pinion 12 is fixedly connected to the output shaft of the stepper motor 11, the rotating shaft 14 is inserted into the carburetor body 4 and is fixedly connected to the throttle 5, and the driven large gear 13 is fixedly connected to the top of the rotating shaft 14 and meshed with the driving pinion 12;

[0026] When the throttle opening and closing control component 2 is working, the stepper motor 11 drives the driving pinion 12 to rotate, the driving pinion 12 drives the driven large gear 13 to rotate, the driven large gear 13 drives the rotating shaft 14 to rotate, and the rotating shaft 14 drives the throttle 5 to rotate to achieve the adjustment of the opening and closing state;

[0027] When the engine load increases or the no-load speed increases from the idle point, more mixed gas needs to be provided from the carburetor to enter the engine cylinder head for combustion. The stepper motor 11 receives the engine speed or load feedback signal, and the stepper motor 11 rotates at a corresponding angle to achieve regulation. When the intake volume increases, the negative pressure inside the main injection hole 8 increases. At this time, the oil supply is increased through the main injection hole 8, the oil needle 10 rises, and the plunger 6 is driven upward synchronously, thereby achieving a synchronous increase in the air supply and the oil supply.

[0028] When the engine changes from high speed or high load to low speed (idling state), low pressure load and other working conditions, the stepper motor 11 rotates at a corresponding angle to achieve regulation. When the intake volume decreases, the negative pressure inside the main injection hole 8 decreases, the oil supply of the main injection hole 8 decreases, the oil needle 10 moves downward, and synchronously drives the plunger 6 to move downward, thereby reducing the oil supply;

[0029] The oil needle fine-tuning control assembly 3 is composed of a stepper motor 15, a worm 16, a rotating shaft 17, a semicircular worm wheel 18, a semicircular gear 19 and a rack 20. The stepper motor 15 is fixedly connected to the inside of the plunger 6, the worm 16 is fixedly connected to the output shaft of the stepper motor 15, the rotating shaft 17 is rotatably connected to the inside of the plunger 6, the semicircular worm wheel 18 and the semicircular gear 19 are respectively welded to both sides of the rotating shaft 17, the semicircular worm wheel 18 is meshed with the worm 16, and the rack 20 is fixedly connected to the top of one side of the oil needle 10 and meshed with the semicircular gear 19;

[0030] During the actual use of the carburetor, it is necessary to manually fine-tune the position of the oil needle 10 according to the actual situation, and the oil needle fine-tuning control component 3 can realize automatic adjustment. During the adjustment process, the stepper motor 15 drives the worm 16 to rotate, the worm 16 drives the semicircular worm wheel 18 to rotate, and the semicircular worm wheel 18 drives the semicircular gear 19 to rotate, so that the rack 20 is driven to rise and fall through the semicircular gear 19. The rack 20 realizes fine-tuning of the height of the oil needle 10, and then the oil supply can be fine-tuned;

[0031] The stepper motor 11 is connected to the stepper driver 1 via the wire 1 21, and the stepper motor 2 15 is connected to the stepper driver 1 via the wire 2 22. The wire 1 21 and the wire 2 22 can be electrically connected.

[0032] A protective cover 23 is fixedly provided at one end of the top of the carburetor body 4 to achieve a protective effect, and a motor mounting seat 24 connected to the stepper motor 11 is fixedly provided inside the protective cover 23 to fix the stepper motor 11;

[0033] An installation inner groove 25 is provided inside the plunger 6, and a motor mounting seat 26 connected to the stepper motor 15 is fixed inside the installation inner groove 25, so that the stepper motor 15 can be installed and fixed. A wire threading groove 27 connected to the installation inner groove 25 is provided at the top of the plunger 6, so that the wire 22 can be installed.

[0034] During operation, by providing a stepper driver, it can be electrically connected to the engine control system, so that it can receive electrical signals from the engine control system, and further can realize precise control and adjustment of the throttle opening and closing control component and the oil needle fine-tuning control component; by providing a throttle opening and closing control component composed of a stepper motor 1, a driving pinion, a driven large gear and a rotating shaft, it can realize precise adjustment of the opening and closing and opening and closing state of the throttle, and further can realize precise adjustment of the intake volume, so that the engine can perform at its best performance; by providing an oil needle fine-tuning control component composed of a stepper motor 2, a worm, a rotating shaft, a semicircular worm gear, a semicircular gear and a rack, it can realize fine-tuning of the height of the oil needle, so that it is convenient to automatically adjust the oil supply, and realize fine-tuning of the oil supply, so that the oil supply matches the intake volume.

Claims

1. A carburetor intelligent control device, comprising a stepping driver (1), a throttle opening and closing control component (2) and a fuel needle fine-tuning control component (3), characterized in that: The stepper driver (1) is electrically connected to the engine control system, the throttle opening and closing control component (2) and the oil needle fine-tuning control component (3) are both electrically connected to the stepper driver (1), the throttle opening and closing control component (2) is fixedly connected to one end of the top of the carburetor body (4) and is connected to the throttle (5), a plunger (6) is arranged at a middle position inside the carburetor body (4), a float (7) is arranged at the bottom end inside the carburetor body (4), a main oil injection hole (8) and an idle oil injection hole (9) are opened on the float (7), an oil needle (10) is arranged inside the main oil injection hole (8), the top end of the oil needle (10) slides and penetrates the plunger (6), and the oil needle fine-tuning control component (3) is connected between the oil needle (10) and the plunger (6); The throttle opening and closing control component (2) is composed of a stepper motor (11), a driving pinion (12), a driven large gear (13) and a rotating shaft (14); the stepper motor (11) is fixedly connected to the top of the carburetor body (4); the driving pinion (12) is fixedly connected to the output shaft of the stepper motor (11); the rotating shaft (14) is inserted into the carburetor body (4) and is fixedly connected to the throttle (5); the driven large gear (13) is fixedly connected to the top of the rotating shaft (14) and is meshed with the driving pinion (12); The oil needle fine-tuning control assembly (3) is composed of a second stepping motor (15), a worm (16), a rotating shaft (17), a semicircular worm wheel (18), a semicircular gear (19) and a rack (20). The second stepping motor (15) is fixedly connected to the inside of the plunger (6). The worm (16) is fixedly connected to the output shaft of the second stepping motor (15). The rotating shaft (17) is rotatably connected to the inside of the plunger (6). The semicircular worm wheel (18) and the semicircular gear (19) are respectively welded to both sides of the rotating shaft (17). The semicircular worm wheel (18) is meshedly connected to the worm (16). The rack (20) is fixedly connected to the top end of one side of the oil needle (10) and meshedly connected to the semicircular gear (19).

2. The intelligent carburetor control device according to claim 1, characterized in that: The stepper motor 1 (11) is connected to the stepper driver (1) via a wire 1 (21), and the stepper motor 2 (15) is connected to the stepper driver (1) via a wire 2 (22).

3. The intelligent carburetor control device according to claim 1, characterized in that: A protective cover (23) is fixedly provided at one end of the top of the carburetor body (4), and a motor mounting seat (24) connected to a stepper motor (11) is fixedly provided inside the protective cover (23).

4. The intelligent carburetor control device according to claim 1, characterized in that: The plunger (6) is provided with an inner mounting groove (25), a second motor mounting seat (26) connected to the second stepping motor (15) is fixedly arranged inside the inner mounting groove (25), and a threading groove (27) communicating with the inner mounting groove (25) is provided at the top end of the plunger (6).

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