Motorcycle carburetor

Abstract

The utility model discloses a motorcycle carburetor, which relates to the technical field of carburetors and comprises a carburetor body, an air inlet pipe, an air outlet pipe and an air inlet mechanism, the air inlet mechanism comprises an air pump and an air inlet shell, the carburetor body comprises a conveying pipeline, and the air inlet pipe and the air outlet pipe are arranged on the carburetor body. The carburetor body is arranged on the carburetor body and communicated with the conveying pipeline, a through hole is formed in the air outlet pipe, the air inlet shell is arranged on the air outlet pipe and communicated with the air outlet pipe, the air pump is arranged on the air inlet shell, and after an engine is started, air enters the carburetor body through the air inlet pipe and is mixed with fuel oil through the conveying pipeline. After the air and the fuel oil are mixed, if the air proportion is low, an air pump in the air inlet mechanism guides the air into the air outlet pipe, the air proportion in the air and fuel oil mixture is increased, the combustion efficiency of the fuel oil is improved, and emission of harmful gas is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of carburetors, in particular to a motorcycle carburetor. Background Art

[0002] A carburetor is a mechanical device that mixes gasoline and air in a certain proportion under the vacuum generated by the operation of the engine. It is the "lifeblood" of the engine and can ensure the smooth operation of the engine. The carburetor uses the kinetic energy of the inhaled air flow to atomize gasoline and has the function of regulating the mixing ratio of gasoline and air entering the engine, which is the key to ensuring the stable operation of the engine.

[0003] A patent with a publication date of April 29, 2022 and a publication number of CN216406992U discloses an energy-saving and environment-friendly motorcycle carburetor, which includes a carburetor body and a cover plate. A plurality of ventilation holes are opened on one side of the carburetor body, and two connecting plates are fixedly installed on one side of the carburetor body. Grooves, two through holes and two connecting grooves are opened on one side of the cover plate. Dust-proof nets are fixedly installed in both through holes. The two connecting plates are respectively movably inserted into the corresponding connecting grooves, and clamping grooves are opened on the sides of the two connecting plates away from each other. By opening ventilation holes and setting dust-proof nets on the motorcycle carburetor, the utility model improves the ventilation and heat dissipation and dust-proof performance, and is convenient for disassembling the dust-proof net for cleaning.

[0004] The carburetor mixes fuel and air to form a combustible mixture for the engine to burn. If the mixture ratio is too lean or too rich, it will affect the normal operation of the engine. An appropriate fuel-air ratio can ensure complete combustion of the fuel, thereby achieving optimized fuel economy. If the fuel-air ratio is improper, the fuel cannot be completely burned, wasting fuel resources and increasing operating costs. An appropriate fuel-air ratio can reduce the emission of harmful substances such as hydrocarbons, carbon monoxide and nitrogen oxides, while an improper fuel-air ratio will lead to an increase in the emission of these harmful substances, polluting the environment. In actual use, due to factors such as fuel quality, environmental temperature, and altitude, the fuel-air ratio of the carburetor may change, often resulting in insufficient air content and incomplete combustion of the fuel. The above solution improves the ventilation and heat dissipation and dust-proof performance by opening ventilation holes and setting dust-proof nets on the motorcycle carburetor, and is convenient for disassembling the dust-proof net for cleaning, but ignores that in many cases, the carburetor has insufficient air, resulting in incomplete combustion of the fuel, reducing the fuel combustion efficiency, emitting harmful gases and polluting the environment.

[0005] Therefore, it is necessary to provide a motorcycle carburetor. Summary of the Utility Model

[0006] The embodiments of the present application provide a motorcycle carburetor, which can improve the problems existing in the related art, such as the insufficient combustion of fuel due to insufficient air in the carburetor, the reduction of fuel combustion efficiency, the emission of harmful gases, and environmental pollution.

[0007] The embodiments of the present application provide a motorcycle carburetor, which includes a carburetor body, an intake pipe, an exhaust pipe, and an intake mechanism. The intake mechanism includes an air pump and an intake housing. The carburetor body includes a delivery pipe. The intake pipe and the exhaust pipe are arranged on the carburetor body and communicate with the delivery pipe. A through hole is formed in the exhaust pipe. The intake housing is arranged on the exhaust pipe and communicates with the exhaust pipe. The air pump is arranged on the intake housing.

[0008] In the embodiments of the present application, after the engine is started, air enters the carburetor body through the intake pipe, mixes with fuel through the delivery pipe, and then enters each cylinder through the exhaust pipe for the engine to burn and do work. After the air entering from the intake pipe is mixed with the fuel, if the air content is insufficient and the air proportion is low, the air pump in the intake mechanism will introduce air into the exhaust pipe to increase the proportion of air in the air-fuel mixture and improve the combustion efficiency of the fuel.

[0009] In the above technical solutions of the embodiments of the present application, at least the following technical effects are achieved: The intake mechanism is arranged on the exhaust pipe, which can make real-time adjustments according to the air-fuel mixture ratio in actual situations. The air pump introduces air into the exhaust pipe to increase the proportion of air in the air-fuel mixture, improve the combustion efficiency of the fuel, reduce economic costs, and reduce the emission of harmful gases.

[0010] In some embodiments, the intake mechanism further includes a check valve, a gas regulating valve, a separation component, and a filter membrane. The separation component is arranged on the intake housing. The check valve is arranged at one end of the intake housing close to the exhaust pipe. The gas regulating valve is arranged at one end of the intake housing far from the exhaust pipe. The air pump is arranged inside the intake housing and is located between the check valve and the gas regulating valve. The filter membrane is arranged on the air vent of the gas regulating valve.

[0011] In some embodiments, the separation component includes a partition plate, a first sealing ring, and a second sealing ring. The partition plate is provided with a through hole. The partition plate is sleeved on the air pump. The first sealing ring is arranged on the air pump. The inner side of the first sealing ring abuts against the air pump, and the outer side of the first sealing ring abuts against the partition plate. The second sealing ring is arranged on the partition plate. The inner side of the second sealing ring abuts against the partition plate, and the outer side of the second sealing ring abuts against the inner wall of the intake housing.

[0012] In some embodiments, a choke valve is provided at one end of the intake pipe away from the carburetor body.

[0013] In some embodiments, a filtering assembly is further provided on the intake pipe. The filtering assembly includes a first filter screen and a sticky cylinder. The sticky cylinder is slidably connected in the intake pipe. The first filter screen is disposed on the intake pipe and is located between the sticky cylinder and the carburetor body.

[0014] In some embodiments, the outer wall of the sticky cylinder is smooth, the outer diameter is the same as the inner diameter of the intake pipe, and the inner wall is adhesive.

[0015] In some embodiments, a second filter screen is provided at one end of the exhaust pipe away from the carburetor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 FIG. 1 is a schematic diagram of the overall structure of a motorcycle carburetor provided in an embodiment of the present application;

[0018] Figure 2 FIG. 2 is a schematic diagram of the overall structure of a motorcycle carburetor from another angle provided in an embodiment of the present application;

[0019] Figure 3 FIG. 3 is a schematic cross-sectional view of the overall structure of a motorcycle carburetor provided in an embodiment of the present application;

[0020] Figure 4 FIG. Figure 3 is an enlarged view of part A in FIG.

[0021] Among them, the reference numerals in the drawings are as follows:

[0022] 1. Intake pipe; 2. Exhaust pipe; 3. Intake mechanism; 31. Intake housing; 32. Air pump; 33. Check valve; 34. Gas regulating valve; 35. Filter membrane; 36. Isolation assembly; 361. Partition board; 362. First sealing ring; 363. Second sealing ring; 4. Choke valve; 5. Filtering assembly; 51. First filter screen; 52. Sticky cylinder; 6. Second filter screen; 7. Carburetor body; 8. Delivery pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Based on this, in order to improve the problem in the related art that the carburetor has insufficient air intake, resulting in incomplete fuel combustion, reduced fuel combustion efficiency, emission of harmful gases, and environmental pollution, the embodiments of the present application provide the following solutions.

[0024] Please refer to Figures 1 - 4 , including a carburetor body 7, an intake pipe 1, an exhaust pipe 2, and an intake mechanism 3. The intake mechanism 3 includes an air pump 32 and an intake housing 31. The carburetor body 7 includes a delivery pipe 8. The intake pipe 1 and the exhaust pipe 2 are threadedly connected to the carburetor body 7 and communicate with the delivery pipe 8. A through hole is provided on the exhaust pipe 2. The intake housing 31 is threadedly connected to the exhaust pipe 2 and communicates with the exhaust pipe 2. The air pump 32 is fixedly connected to the intake housing 31.

[0025] With such a setting, after the engine is started, air enters the carburetor body 7 through the intake pipe 1 and passes through the first half of the delivery pipe 8, then mixes with the atomized fuel ejected inside the carburetor, and then enters each cylinder through the exhaust pipe 2 for the engine to burn and do work. In the air-fuel mixture entering from the intake pipe 1, if the air content is insufficient and the proportion of air is low, the air pump 32 in the intake housing 31 will introduce air into the exhaust pipe 2 to increase the proportion of air in the air-fuel mixture and improve the fuel combustion efficiency. The outer shape of the intake housing 31 can be divided into two cylinders with different diameters. The cylinder with a smaller diameter communicates with the exhaust pipe 2, and the cylinder with a larger diameter houses the air pump 32. When the air ejected by the air pump 32 passes through the cylinder with a smaller diameter, the air flow rate increases, and after entering the exhaust pipe 2, it can mix better with the fuel.

[0026] Optionally, in some embodiments, please refer to Figure 3 and Figure 4 , the intake mechanism 3 further includes a check valve 33, a gas regulating valve 34, an isolation assembly 36, and a filter membrane 35. The isolation assembly 36 is fixedly connected to the intake housing 31. The check valve 33 is adhesively bonded to one end of the intake housing 31 close to the exhaust pipe 2. The gas regulating valve 34 is threadedly connected to the end of the intake housing 31 away from the exhaust pipe 2. The air pump 32 is fixedly connected inside the intake housing 31 and is located between the check valve 33 and the gas regulating valve 34. The filter membrane 35 is snap-connected to the air vent of the gas regulating valve 34.

[0027] With such a setting, the opening direction of the one-way valve 33 is from the air pump 32 towards the air outlet pipe 2. The one-way valve 33 plays a role of blocking and protecting. When the intake mechanism 3 is not operating, without the one-way valve 33, the mixture of atomized gasoline and air may enter the interior of the intake housing 31 through the air outlet pipe 2, causing pollution to the air pump 32, the isolation component 36, etc. inside the intake housing 31. The isolation component 36 divides the intake housing 31 into two parts. One part is in contact with the outside air, and the other part forms a sealed space, restricting the air outlet part of the air pump 32 within the sealed space, with the air intake part in contact with the air. The gas regulating valve 34 restricts the speed of air entering the intake housing 31 by controlling the size of the regulating valve opening, thereby affecting the speed and concentration of the air exported by the air pump 32. A filter membrane 35 is designed on the air vent of the gas regulating valve 34, mainly used to filter some dust and impurities in the air, preventing the impurities in the air from mixing with the fuel and causing blockages to some other components of the motorcycle such as the engine.

[0028] Optionally, in some embodiments, please also refer to Figure 4 , the isolation component 36 includes a partition plate 361, a first sealing ring 362, and a second sealing ring 363. The partition plate 361 is provided with a through hole. The partition plate 361 is sleeved on the air pump 32. The first sealing ring 362 is arranged on the air pump 32. The inner side of the first sealing ring 362 abuts against the air pump 32, and the outer side of the first sealing ring 362 abuts against the partition plate 361. The second sealing ring 363 is arranged on the partition plate 361. The inner side of the second sealing ring 363 abuts against the partition plate 361, and the outer side of the second sealing ring 363 abuts against the inner wall of the intake housing 31.

[0029] With such a setting, the housing of the air pump 32 is cylindrical, and the partition plate 361 is in a circular ring shape. The partition plate 361 increases rigidity and support. The first sealing ring 362 and the second sealing ring 363 are made of rubber. After being pressed by the partition plate 361, the first sealing ring is in close contact with the partition plate 361 and the air pump 32, and the second sealing ring is in close contact with the partition plate 361 and the intake housing 31, forming a good sealing effect. Taking the partition plate 361 as the boundary, the space between the partition plate 361 and the one-way valve 33 is a relatively sealed space when the one-way valve 33 is not opened. The space between the partition plate 361 and the gas regulating valve 34 is communicated with the outside air. The air inlet of the air pump 32 inhales the air in this part of the space, and then pumps the gas out from the air outlet of the air pump 32. The air pressure in the sealed space gradually increases. When the air pressure reaches the bearing limit of the one-way valve 33, the one-way valve 33 opens, and the gas enters the air outlet pipe 2 through the one-way valve 33.

[0030] Optionally, in some embodiments, please also refer to Figure 1 and Figure 3One end of the intake pipe 1 away from the carburetor body 7 is threadedly connected with a choke 4.

[0031] With such a configuration, the more air in the carburetor, the better. In some cases, such as when the engine is cold started, the gasoline is not easy to atomize due to the low temperature of the air entering the cylinder, which will cause difficulty in starting the engine. At this time, the choke 4 can properly close part of the air inlet to increase the gasoline concentration of the mixed gas entering the cylinder, thereby making it easier to start the engine. The choke 4 and the intake mechanism 3 ensure that the mixing ratio of air and fuel is appropriate from the head and tail of the carburetor.

[0032] Optionally, in some embodiments, please refer to Figure 3 A filter assembly 5 is also provided on the intake pipe 1, and the filter assembly 5 includes a first filter screen 51 and a sticky cylinder 52. The sticky cylinder 52 is slidably connected in the intake pipe 1. The first filter screen 51 is clamped on the intake pipe 1 and is located between the sticky cylinder 52 and the carburetor body 7. The outer wall of the sticky cylinder 52 is smooth, and the outer diameter is the same as the inner diameter of the intake pipe 1, and the inner wall is sticky glue.

[0033] With such a configuration, the sticky cylinder 52 is detachable, and the outer wall of the sticky cylinder 52 is smooth, so that the sticky cylinder 52 can be easily installed and removed from the intake pipe 1. The adhesive on the inner wall can absorb and stick the impurities and dust in the air, and then the air passes through the first filter 51, and the air passing through the sticky cylinder 52 is cleaned and filtered twice to ensure the cleanliness of the air. If the dust, gravel and other impurities in the air enter the cylinder directly without being filtered, it will accelerate the wear of the piston group and the cylinder. Larger particles entering between the piston and the cylinder may even cause serious "cylinder pulling", which is a great damage to the engine.

[0034] Optionally, in some embodiments, please refer to Figure 2 as well as Figure 3 A second filter screen 6 is provided at one end of the air outlet pipe 2 away from the carburetor body 7 .

[0035] In this arrangement, the filter membrane 35 and the first filter screen 51 are used to filter impurities in the air, and the second filter screen 6 is used to filter impurities in the fuel. If the refinery's process level is not high or the quality control is not strict, it may cause the fuel to contain more impurities. The colloid and impurities in the fuel are easy to block the fuel supply system, including the fuel injector, the oil pump filter screen and the gasoline filter. The blockage of these components will lead to poor fuel supply, which will affect the normal operation of the engine, causing difficulty in starting, failure to start, and stalling during driving.

[0036] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included within the protection scope of the present application.

Claims

1. A motorcycle carburetor, characterized in that: It includes a carburetor body (7), an intake pipe (1), an exhaust pipe (2), and an intake mechanism (3). The intake mechanism (3) includes an air pump (32) and an intake housing (31). The carburetor body (7) includes a delivery pipe (8). The intake pipe (1) and the exhaust pipe (2) are arranged on the carburetor body (7) and communicate with the delivery pipe (8). A through hole is provided on the exhaust pipe (2). The intake housing (31) is arranged on the exhaust pipe (2) and communicates with the exhaust pipe (2). The air pump (32) is arranged on the intake housing (31).

2. A motorcycle carburetor according to claim 1, characterized in that, The intake mechanism (3) further includes a check valve (33), a gas regulating valve (34), a separation component (36), and a filter membrane (35). The separation component (36) is arranged on the intake housing (31). The check valve (33) is arranged at one end of the intake housing (31) close to the exhaust pipe (2). The gas regulating valve (34) is arranged at one end of the intake housing (31) far from the exhaust pipe (2). The air pump (32) is arranged inside the intake housing (31) and is located between the check valve (33) and the gas regulating valve (34). The filter membrane (35) is arranged on the air vent of the gas regulating valve (34).

3. The carburetor for motorcycle according to claim 2, characterized in that, The separation component (36) includes a partition plate (361), a first sealing ring (362), and a second sealing ring (363). The partition plate (361) is provided with a through hole. The partition plate (361) is sleeved on the air pump (32). The first sealing ring (362) is arranged on the air pump (32). The inner side of the first sealing ring (362) abuts against the air pump (32), and the outer side of the first sealing ring (362) abuts against the partition plate (361). The second sealing ring (363) is arranged on the partition plate (361). The inner side of the second sealing ring (363) abuts against the partition plate (361), and the outer side of the second sealing ring (363) abuts against the inner wall of the intake housing (31).

4. A motorcycle carburetor according to claim 3, characterized in that, A choke valve (4) is arranged at one end of the intake pipe (1) far from the carburetor body (7).

5. A motorcycle carburetor according to claim 4, characterized in that, A filtering component (5) is further arranged on the intake pipe (1). The filtering component (5) includes a first filter screen (51) and a sticky cylinder (52). The sticky cylinder (52) is slidably connected in the intake pipe (1). The first filter screen (51) is arranged on the intake pipe (1) and is located between the sticky cylinder (52) and the carburetor body (7).

6. A motorcycle carburetor according to claim 5, characterized in that, The outer wall of the sticky cylinder (52) is smooth, and its outer diameter is the same as the inner diameter of the intake pipe (1), and its inner wall is adhesive.

7. A motorcycle carburetor according to claim 6, characterized in that, A second filter screen (6) is arranged at one end of the exhaust pipe (2) far from the carburetor body (7).

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