A test bench for detecting performance of a carburetor

Abstract

The utility model discloses a test bench for the performance detection of vaporizer belongs to engine fuel supply system detection technical field, including experiment table, and the top of experiment table is placed with lifting platform and base, and the top of lifting platform is placed with vaporizer, and one end fixed mounting of vaporizer has pipeline, and the one end fixed mounting of pipeline away from vaporizer has the shower nozzle, and the top fixed mounting of base has a plurality of pressure sensor, and the top fixed connection of pressure sensor has the tray. The utility model discloses through lifting platform regulation vaporizer injection height, simulates different installation working condition, and fuel is shot to the oil absorbing cotton plug in the spherical shell through the shower nozzle, and a plurality of pressure sensor real -time monitoring pressure change in the adsorption process, and will data transmission to display screen, judges the spatial distribution uniformity of fuel injection through the consistency of each sensor data analysis, utilizes the universal ball structure and adapts to different injection angle, realizes the accurate detection of vaporizer injection performance under multiple working conditions.

Description

Technical Field

[0001] This utility model relates to the field of engine fuel supply system testing technology, and in particular to a test bench for testing carburetor performance. Background Technology

[0002] As a core component of the engine's fuel supply system, the carburetor's performance directly affects the engine's power, economy, and emissions. Current carburetor performance testing largely focuses on measuring single parameters such as flow rate and pressure, lacking effective methods for detecting the uniformity of fuel injection spatial distribution. Traditional testing methods typically rely on visual inspection or simple weighing, which suffer from strong subjectivity, inaccurate data, and an inability to quantitatively assess spatial distribution uniformity. Especially in practical applications, the carburetor's installation height and angle affect fuel delivery characteristics, and existing testing equipment often cannot simulate these changing conditions, leading to discrepancies between test results and actual performance. Therefore, there is an urgent need to develop a carburetor performance testing device capable of accurately detecting the uniformity of fuel injection spatial distribution and simulating different installation conditions.

[0003] Therefore, a test bench for testing the performance of carburetors is proposed. Utility Model Content

[0004] The purpose of this invention is to address the lack of effective means to detect the uniformity of fuel injection space distribution in carburetors and the inability to simulate the influence of different installation heights on injection characteristics in existing technologies. Therefore, this invention proposes a test bench for testing the performance of carburetors.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A test bench for testing the performance of a vaporizer includes a test table, a lifting platform and a base placed on the test table, a vaporizer placed on the lifting platform, a pipe fixedly installed at one end of the vaporizer, a nozzle fixedly installed at the end of the pipe away from the vaporizer, multiple pressure sensors fixedly installed on the base, a tray fixedly connected above the pressure sensors, a spherical shell fixedly installed inside the tray, a cap fixedly installed below the tray, a universal ball clamped inside the cap, the universal ball fixedly installed above the base via a base column, and a display screen fixedly installed on the side of the test table.

[0007] Preferably, the spherical shell has a groove on its outer periphery and a plug is fixedly installed inside.

[0008] Preferably, the pressure of the pressure sensor is the same in its initial state.

[0009] Preferably, the pressure sensor outputs the value on a display screen.

[0010] Preferably, the size of the omnidirectional ball is adapted to the cap, the size of the plug is adapted to the groove opened inside the spherical shell, and the material of the plug is oil-absorbing cotton.

[0011] Preferably, the periphery of the lifting column below the lifting platform is provided with a scale.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model, by detecting the uniformity of fuel injection, can ensure that the carburetor forms a precise and controllable air-fuel mixture during operation, thereby directly improving the combustion efficiency of the engine and achieving the comprehensive effects of enhancing power output, reducing fuel consumption, reducing harmful emissions, and extending engine life.

[0014] 2. By simulating injection conditions at different installation heights, this utility model can effectively verify the working stability of the carburetor under gravity variation, ensuring that it can resist fuel supply fluctuations caused by attitude changes in actual use, and significantly improving the adaptability and reliability of the product under complex working conditions. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of a test bench for testing the performance of a carburetor proposed in this utility model. Figure 1 ;

[0016] Figure 2 A schematic diagram of the structure of a test bench for testing the performance of a vaporizer proposed in this utility model. Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the tray structure of a test bench for testing the performance of a vaporizer, as proposed in this utility model.

[0018] Figure 4 This is an assembly drawing of the tray structure of a test bench for testing the performance of a carburetor, as proposed in this utility model.

[0019] Figure 5 This is a schematic diagram of the spherical shell structure of a test bench for testing the performance of a vaporizer, as proposed in this utility model.

[0020] Figure 6 This is an assembly drawing of the universal ball structure of a test bench for testing the performance of a carburetor, as proposed in this utility model.

[0021] In the diagram: 1. Experimental table; 2. Lifting platform; 3. Vaporizer; 4. Pipe; 5. Display screen; 6. Plug; 7. Pressure sensor; 8. Nozzle; 9. Tray; 10. Base; 11. Spherical shell; 12. Base column; 13. Omnidirectional ball; 14. Cap. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Reference Figures 1-6 A test bench for testing the performance of a vaporizer includes a test table 1, a lifting platform 2 and a base 10 placed on the test table 1, a vaporizer 3 placed on the lifting platform 2, a pipe 4 fixedly installed at one end of the vaporizer 3, a nozzle 8 fixedly installed at the end of the pipe 4 away from the vaporizer 3, multiple pressure sensors 7 fixedly installed on the base 10, a tray 9 fixedly connected above the pressure sensors 7, a spherical shell 11 fixedly installed inside the tray 9, a cap 14 fixedly installed below the tray 9, a universal ball 13 snapped into the cap 14, the universal ball 13 fixedly installed above the base 10 via a base column 12, and a display screen 5 fixedly installed on the side of the test table 1.

[0024] Using the above technical solution, in the performance testing of carburetor 3 (model G20E), the carburetor 3 is first fixed to the lifting platform 2 with bolts. The carburetor 3 is then started, and the fuel injection direction is precisely aligned with the spherical shell 11 inside the tray 9 by adjusting the carburetor 3 (the pipe 4 is made of rigid material and will not change its injection direction during injection). After the injection program is started, the oil-absorbing cotton plug 6 pre-installed in the groove of the spherical shell 11 simultaneously absorbs and collects the injected fuel. After continuous injection for a set time, the system reads and analyzes the real-time data transmitted to the display screen 5 from multiple pressure sensors 7 on the base 10. Since the pressure values ​​of each pressure sensor 7 are calibrated uniformly in the initial state, if all sensor values ​​remain balanced and stable during the test, it indicates that the fuel injection flow rate, pressure, and distribution of the carburetor 3 nozzle meet the standard requirements, and the nozzle performance is normal. If the sensor values ​​differ beyond the allowable range, it is determined that the nozzle has an uneven injection defect, and the nozzle assembly needs to be replaced or repaired. This testing process effectively controls the uniformity of fuel injection in the carburetor 3, providing key performance assurance for the subsequent engine to achieve efficient fuel combustion, reduce fuel consumption, extend service life, and reduce pollutant emissions, ensuring that the engine meets design standards in terms of power output, economy, and environmental protection.

[0025] Specifically, the spherical shell 11 has a groove on its outer periphery and a plug 6 is fixedly installed inside. The pressure of the multiple pressure sensors 7 is the same in the initial state, and the values ​​of the multiple pressure sensors 7 are output to the display screen 5.

[0026] After completing the initial fuel injection uniformity test of the carburetor 3 and confirming its qualification through the above technical solution, further multi-condition simulation tests need to be carried out. During operation, the height of the legs of the lifting platform 2 is adjusted according to experimental requirements to achieve precise positioning at different heights. The scale design on the outer perimeter of the lifting column at the bottom of the lifting platform 2 ensures the accuracy and repeatability of height adjustment, avoiding the impact of height control errors on the test results. By changing the relative height between the carburetor 3 and the spherical shell 11 detection component, the influence of gravity changes on fuel atomization effect and spatial distribution can be verified.

[0027] During this process, the oil-absorbing cotton plug 6 inside the groove of the spherical shell 11 continuously absorbs fuel injected at different heights, while multiple pressure sensors 7 on the base 10 collect and transmit pressure data to the display screen 5 in real time. If changes in gravity cause uneven fuel atomization particles, deviation in the injection trajectory, or local fuel accumulation, the pressure sensor 7 will show inconsistent values, thus accurately detecting the defect of uneven fuel supply.

[0028] This multi-height detection mode breaks through the limitations of traditional static detection, realizing dynamic simulation of the actual working scenario of the carburetor 3. By exposing potential problems in advance and carrying out targeted optimization, the adaptability of the carburetor 3 under complex working conditions can be effectively improved. This ensures that after it is installed in the engine, even when faced with changes in vehicle posture during driving, it can still maintain a stable fuel supply. This provides a reliable guarantee for the engine to continuously achieve efficient combustion, reduce fuel consumption, and reduce pollutant emissions, ultimately significantly enhancing the overall reliability and environmental adaptability of the engine product.

[0029] Specifically, the size of the omnidirectional ball 13 is adapted to the cap 14, the size of the plug 6 is adapted to the groove opened inside the spherical shell 11, the plug 6 is made of oil-absorbing cotton, and the lifting column below the lifting platform 2 is provided with scales.

[0030] Working principle:

[0031] In use, the carburetor 3 to be tested is placed on the lifting platform 2 of the experimental table 1. The nozzle 8 connected to it via the pipe 4 is aligned with the spherical shell 11 inside the tray 9 on the base 10. The oil-absorbing cotton plug 6 installed in the groove of the spherical shell 11 is used to absorb the fuel sprayed from the nozzle 8. Multiple pressure sensors 7 on the base 10 with the same initial pressure collect the pressure data of the tray 9 in real time and transmit it to the display screen 5 on the side of the experimental table 1. By observing whether the values ​​of the pressure sensors 7 are always consistent, it can be determined whether the fuel spray from the nozzle of the carburetor 3 is uniform. After passing the test, the carburetor 3 is adjusted to different heights using the scale on the outer perimeter of the lifting column of the lifting platform 2. At the same time, the angle of the tray 9 is adjusted using the matching structure between the cap 14 under the tray 9 and the universal ball 13 to simulate the influence of gravity under different working conditions, further verifying the fuel atomization and distribution state. This comprehensively tests the performance of the carburetor 3 and identifies potential defects in advance.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A test bench for testing the performance of a vaporizer, comprising a test table (1), characterized in that, The experimental table (1) is equipped with a lifting platform (2) and a base (10). A vaporizer (3) is placed on the lifting platform (2). A pipe (4) is fixedly installed at one end of the vaporizer (3). A nozzle (8) is fixedly installed at the end of the pipe (4) away from the vaporizer (3). Multiple pressure sensors (7) are fixedly installed on the base (10). A tray (9) is fixedly connected on the pressure sensors (7). A spherical shell (11) is fixedly installed inside the tray (9). A cap (14) is fixedly installed below the tray (9). A universal ball (13) is snapped into the cap (14). The universal ball (13) is fixedly installed on the base (10) through a base column (12). A display screen (5) is fixedly installed on the side of the experimental table (1).

2. The test bench for testing the performance of a vaporizer according to claim 1, characterized in that, The spherical shell (11) has a groove on its outer periphery and a plug (6) is fixedly installed inside.

3. The test bench for testing the performance of a vaporizer according to claim 1, characterized in that, The pressure of the pressure sensor (7) is the same in the initial state.

4. The test bench for testing the performance of a vaporizer according to claim 1, characterized in that, The pressure sensor (7) outputs a value on the display screen (5).

5. A test bench for testing the performance of a vaporizer according to claim 2, characterized in that, The size of the universal ball (13) is adapted to the cap (14), the size of the plug (6) is adapted to the groove opened inside the spherical shell (11), and the material of the plug (6) is oil-absorbing cotton.

6. The test bench for testing the performance of a vaporizer according to claim 1, characterized in that, The lifting column below the lifting platform (2) is equipped with a scale.

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