Electric control carburetor

Abstract

The invention relates to the technical field of carburetors, in particular to an electric control carburetor. Comprising an opening degree sensor, a high-speed air supply passage, a low-speed air supply passage, an induction magnet and a carburetor body, a high-speed air supply valve is arranged at the air inlet end of the high-speed air supply passage, a low-speed air supply valve is arranged at the air inlet end of the low-speed air supply passage, and a plunger assembly is arranged in the carburetor body. By arranging the opening sensor, the fuel injection quantity can be accurately adjusted according to different working conditions of the engine, the optimal air-fuel ratio is ensured, the combustion efficiency is improved, the power performance and the response speed of the engine can be remarkably improved, fuel economy can be improved and fuel consumption can be reduced by optimizing fuel supply, and due to the fact that combustion is more sufficient, the service life of the engine is prolonged. Carbon deposition in the engine is reduced, the service life of the engine is prolonged, and accurate fuel oil control is more beneficial to reduction of harmful tail gas emission.

Description

Technical Field

[0001] The present invention relates to the technical field of carburetors, and in particular to an electronically controlled carburetors. Background Art

[0002] A traditional carburetor is a mechanical device that mixes a certain proportion of gasoline and air under the vacuum generated by the engine and then provides it to the engine. The carburetor automatically matches the corresponding concentration according to the requirements of different working states of the engine and outputs an appropriate amount of mixed gas to ensure the normal operation of the engine. The plunger carburetor is one type of carburetor. The height of the plunger determines the amount of fuel supply. The plunger height is controlled by the driver turning the throttle handle, thereby driving the throttle cable. The return spring in the plunger returns the plunger to its original position. The plunger moves up and down inside the carburetor body, forming a vacuum inside the carburetor according to the working state of the engine, and providing an adaptive fuel mixer flow for different vacuum degrees.

[0003] However, when refueling with a plunger carburetor, the driver directly controls the closing and opening of the plunger by turning the throttle. Although this is direct, it also means that although the throttle response is sensitive, it is not conducive to precise control of the oil volume, especially during sudden acceleration, which can easily lead to oil and gas concentration imbalance. In actual use, the fuel injection amount cannot be accurately adjusted according to the engine operating conditions and load, resulting in a significant increase in fuel consumption. It reduces the oil and gas concentration during acceleration, and a lean oil condition often occurs, which can easily lead to carbon deposits in the spark plug and combustion chamber. Summary of the invention

[0004] The purpose of the present invention is to provide an electronically controlled carburetor, which aims to solve the problem that in the prior art, the driver directly controls the closing and opening of the plunger by turning the throttle when refueling. Although it is direct, it also means that although the throttle response is sensitive, it is not conducive to accurate control of the oil volume, especially during sudden acceleration, it is easy to cause oil and gas concentration imbalance. In actual use, the fuel injection amount cannot be accurately adjusted according to the engine operating conditions and loads, resulting in a significant increase in fuel consumption. The oil and gas concentration is reduced during acceleration, and a lean oil condition often occurs, which is easy to cause carbon deposits in the spark plug and the combustion chamber.

[0005] To achieve the above-mentioned purpose, the present invention adopts an electronically controlled carburetor, including an opening sensor, a high-speed air supply passage, a low-speed air supply passage, an induction magnet and a carburetor body, the air intake end of the high-speed air supply passage is provided with a high-speed air supply valve, the air intake end of the low-speed air supply passage is provided with a low-speed air supply valve, a plunger assembly is provided inside the carburetor body, the opening sensor is fixedly connected to the carburetor body and is located on the outside of the carburetor body, the high-speed air supply passage is connected to the carburetor body and is located on one side of the carburetor body, the low-speed air supply passage is connected to the carburetor body and is located on the other side of the carburetor body, and the induction magnet is provided on the outside of the plunger assembly.

[0006] Wherein, the opening sensor is a non-contact electromagnetic induction sensor, which is internally provided with a transmitter and a receiver.

[0007] Wherein, the voltage output characteristic of the opening sensor is linear.

[0008] Wherein, a throttle cable is arranged above the carburetor body.

[0009] Wherein, the opening sensor is located at an upper portion between the high-speed air supply passage and the low-speed air supply passage.

[0010] An electronically controlled carburetor of the present invention comprises an opening sensor, a high-speed air supply passage, a low-speed air supply passage, an induction magnet and a carburetor body, wherein the air intake end of the high-speed air supply passage is provided with a high-speed air supply valve, the air intake end of the low-speed air supply passage is provided with a low-speed air supply valve, a plunger assembly is provided inside the carburetor body, the opening sensor is fixedly connected to the carburetor body and is located on the outside of the carburetor body, the high-speed air supply passage is communicated with the carburetor body and is located on one side of the carburetor body, the low-speed air supply passage is communicated with the carburetor body and is located on the other side of the carburetor body, and the induction magnet is provided on the outside of the plunger assembly. By providing the opening sensor, the fuel injection amount can be accurately adjusted according to different working conditions of the engine to ensure the best air-fuel ratio, improve combustion efficiency, and generate The dynamic performance and response speed of the engine can be significantly improved. By optimizing the fuel supply, the fuel economy can be improved and the fuel consumption can be reduced. Since the combustion is more complete, the carbon deposits inside the engine are reduced and the service life of the engine is extended. Accurate fuel control is more helpful in reducing harmful exhaust emissions. In this way, the plunger carburetor is effectively solved. When refueling, the driver directly controls the closing and opening size of the plunger by twisting the throttle. Although it is direct, it also means that although the throttle response is sensitive, it is not conducive to accurate control of the oil volume, especially during sudden acceleration, it is easy to cause oil and gas concentration imbalance. In actual use, the injection volume cannot be accurately adjusted according to the engine operating conditions and load, resulting in a significant increase in fuel consumption. It reduces the oil and gas concentration during acceleration, and a lean oil condition often occurs, which easily leads to technical problems such as carbon deposits in the spark plug and the combustion chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 It is a schematic diagram of the internal structure of the electronically controlled carburetor of the present invention.

[0013] Figure 2 It is a low-speed schematic diagram when the plunger assembly and the induction magnet in the electronically controlled carburetor of the present invention are at the lowest point.

[0014] Figure 3 It is a high-speed schematic diagram when the plunger assembly and the induction magnet in the electronically controlled carburetor of the present invention are at the highest point.

[0015] Figure 4 It is a schematic diagram of the principle of the electronically controlled carburetor of the present invention.

[0016] Figure 5 The utility model is a schematic diagram of the installation of the opening sensor in the electronically controlled carburetor of the present invention.

[0017] Figure 6 The utility model is a schematic diagram of the installation of the low-speed air supply channel in the electronically controlled carburetor of the present invention.

[0018] Figure 7 The utility model is a schematic diagram of the installation of the high-speed air supply channel in the electronically controlled carburetor of the present invention.

[0019] Figure 8 It is a connection diagram of a high-speed air supply channel and a low-speed air supply channel in the electronically controlled carburetor of the present invention.

[0020] 1- opening sensor, 2- high-speed air supply passage, 3- low-speed air supply passage, 4- induction magnet, 5- carburetor body, 6- high-speed air supply valve, 7- low-speed air supply valve, 8- plunger assembly, 9- throttle cable. DETAILED DESCRIPTION

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0022] See also Figures 1 to 8 The present invention provides an electronically controlled carburetor, comprising an opening sensor 1, a high-speed air supply passage 2, a low-speed air supply passage 3, an induction magnet 4 and a carburetor body 5, wherein the air inlet end of the high-speed air supply passage 2 is provided with a high-speed air supply valve 6, the air inlet end of the low-speed air supply passage 3 is provided with a low-speed air supply valve 7, a plunger assembly 8 is provided inside the carburetor body 5, the opening sensor 1 is fixedly connected to the carburetor body 5 and is located on the outside of the carburetor body 5, the high-speed air supply passage 2 is communicated with the carburetor body 5 and is located on one side of the carburetor body 5, the low-speed air supply passage is communicated with the carburetor body 5 and is located on the other side of the carburetor body 5, and the induction magnet 4 is provided on the outside of the plunger assembly.

[0023] In this embodiment, by setting the opening sensor 1, the injection amount can be accurately adjusted according to different working conditions of the engine to ensure the best air-fuel ratio and improve combustion efficiency. The power performance and response speed of the engine can be significantly improved. By optimizing the fuel supply, the fuel economy can be improved and fuel consumption can be reduced. Since the combustion is more complete, the carbon deposits inside the engine are reduced and the service life of the engine is extended. Accurate fuel control is more helpful to reduce harmful exhaust emissions. In this way, the problem of refueling with a plunger carburetor is effectively solved by the driver turning the throttle to directly control the closing and opening size of the plunger. Although it is direct, it also means that although the throttle response is sensitive, it is not conducive to accurate control of the oil volume, especially during sudden acceleration, it is easy to cause oil and gas concentration imbalance. In actual use, the injection amount cannot be accurately adjusted according to the engine working condition and load, resulting in a significant increase in fuel consumption. It reduces the oil and gas concentration during acceleration, and a lean oil condition often occurs, which is easy to cause carbon deposits in the spark plug and the combustion chamber. Technical problems.

[0024] Furthermore, the opening sensor 1 is a non-contact electromagnetic induction sensor, which is internally provided with a transmitter and a receiver.

[0025] In this embodiment, the non-contact sensor of the present design is a device that can measure and detect the parameters or states of a target object without physical contact, and adopts the principle of electromagnetic induction. When the plunger assembly 8 containing the induction magnet 4 is moved up and down, the electromagnetic field will change due to the movement of the induction magnet 4. The opening sensor 1 can determine the position of the plunger assembly 8 by measuring this change, and the transmitter generates a magnetic field. When the induction magnet 4 moves in the magnetic field, according to Faraday's law of electromagnetic induction, it will cause induced current and eddy current effects. This induced current will cause local changes in the electromagnetic field, which can be detected by the sensor's receiver.

[0026] Furthermore, the voltage output characteristic of the opening sensor 1 is linear.

[0027] In this embodiment, the opening degree of the plunger assembly 8 and the working state of the engine can be determined by the output voltage value of the opening sensor 1, so as to adjust the appropriate mixture concentration.

[0028] Furthermore, a throttle cable 9 is arranged above the carburetor body 5 .

[0029] In this embodiment, the throttle cable 9 is pulled to drive the cable, thereby achieving the effect of the actuation function of the plunger assembly 8.

[0030] Furthermore, the opening sensor 1 is located at an upper portion between the high-speed air supply passage 2 and the low-speed air supply passage 3 .

[0031] In this embodiment, the high-speed air supply passage 2 and the low-speed air supply passage 3 can be used to supply air to the mixed gas in real time to achieve a suitable mixed gas concentration.

[0032] In the present invention, when the plunger assembly 8 of the carburetor body 5 is in the idle position, the output value of the opening sensor 1 is between 0.3V and 1V; when the plunger assembly 8 of the carburetor body 5 is in the fully open position, the output value of the opening sensor 1 is between 3.8V and 4.5V.

[0033] In the present invention, the carburetor opening is determined by the driver turning the throttle opening. When the throttle is increased, the plunger assembly 8 of the induction magnet 4 will move upward, and the change in height will cause the voltage of the opening sensor 1 to change. The voltage signal is transmitted to the ECU. The ECU determines the size of the plunger opening, and then calculates the correction amount of the air-fuel ratio based on the input signals from the engine speed, intake pressure, water temperature, and oxygen concentration in the exhaust gas, and controls the air supply valve to work. The ECU gives the air supply valve opening signal, and the air passes through the air supply valve and the air supply channel to the inside of the carburetor, and the mixer concentration is adjusted in time. The electronically controlled carburetor improves the accuracy of fuel supply and reduces emissions. Compared with the electronically controlled gasoline injection device, it is more economical and relatively low in cost, and can achieve ideal fuel supply under working conditions such as idling, deceleration, engine shutdown, acceleration, starting and warming up.

[0034] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. An electronically controlled carburetor, characterized in that: It includes an opening sensor, a high-speed air supply passage, a low-speed air supply passage, an induction magnet and a carburetor body. The air inlet end of the high-speed air supply passage is provided with a high-speed air supply valve, the air inlet end of the low-speed air supply passage is provided with a low-speed air supply valve, a plunger assembly is provided inside the carburetor body, the opening sensor is fixedly connected to the carburetor body and is located on the outside of the carburetor body, the high-speed air supply passage is communicated with the carburetor body and is located on one side of the carburetor body, the low-speed air supply passage is communicated with the carburetor body and is located on the other side of the carburetor body, and the induction magnet is provided on the outside of the plunger assembly.

2. The electronically controlled carburetor according to claim 1, characterized in that: The opening sensor is a non-contact electromagnetic induction sensor, which is internally provided with a transmitter and a receiver.

3. The electronically controlled carburetor according to claim 2, characterized in that: The voltage output characteristic of the opening sensor is linear.

4. The electronically controlled carburetor according to claim 3, characterized in that: A throttle cable is arranged above the carburetor body.

5. The electronically controlled carburetor according to claim 4, characterized in that: The opening sensor is located at an upper portion between the high-speed air supply passage and the low-speed air supply passage.

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