A base adjustable multi-fuel multi-model fuel injector comprehensive test bench

Abstract

The application discloses a base-adjustable multi-fuel multi-model fuel injector comprehensive test bench, which comprises a fuel test bench cabinet body, a control and security system, a common rail fuel pipeline and injection system and an electronic weighing device which are respectively arranged on the fuel test bench cabinet body, and the common rail fuel pipeline and injection system and the electronic weighing device are respectively connected with the control and security system in signal connection. The application can satisfy the detection test of single-fuel, multi-fuel, low-pressure fuel and high-pressure common rail engine injectors, and the electronic high-precision weighing table can realize the accurate weighing of the fuel injection quantity. In the field of engine fuel injector research, production and maintenance, the fuel injector test bench is a key equipment for testing the flow characteristics, atomization performance and sealing performance of the fuel injector.

Description

Technical Field

[0001] This invention relates to the technical field of fuel injector testing, and in particular to a comprehensive test bench with an adjustable base suitable for multi-fuel and multi-type fuel injectors. Background Technology

[0002] Fuel injectors are crucial engine components, and their performance directly impacts engine performance. This is especially true as marine engines increasingly utilize newer fuels such as methanol and ammonia, where injector performance directly influences normal engine operation. In practice, the fuel injection process is a collaborative effort between the fuel injection pump and the injector, ensuring fuel is injected into the cylinder at a specific pressure and according to a defined injection pattern. The final state of the fuel injected into the cylinder depends on the fuel supply from the injection pump, the injector's injection pattern, and its initial injection pressure, with the injector's condition being of paramount importance.

[0003] Before an injector is installed in an engine, it must be tested on an injector test bench. If the injector malfunctions, it will cause incomplete fuel combustion, reducing engine power and fuel economy, and increasing carbon deposits will dilute the lubricating oil. Traditional injector test benches have limited applicability and cannot adequately accommodate various fuels and different injector models, nor can they simultaneously conduct comparative experiments on fuel atomization from multiple injectors. Summary of the Invention

[0004] Purpose of the invention: To address the above-mentioned problems, the purpose of this invention is to provide a comprehensive test bench with an adjustable base suitable for multiple fuels and different types of fuel injectors. It can simultaneously meet the comparative experiments of multiple groups and different fuel injectors, conduct injection atomization tests of various fuels, and make objective and accurate judgments on the performance of engine fuel injectors.

[0005] Technical solution: A base-adjustable integrated test bench for multiple fuels and types of fuel injectors, including a fuel test bench cabinet and a control and safety system, a common rail fuel pipeline and injection system, and an electronic weighing device respectively installed on the fuel test bench cabinet. The common rail fuel pipeline and injection system and the electronic weighing device are respectively connected to the control and safety system.

[0006] The common rail fuel line and injection system includes a multi-fuel supply module that stores various media. The multi-fuel supply module is installed in the lower part of the fuel test bench cabinet. The common rail pressure regulator module is installed in the upper part of the fuel test bench cabinet and connected to the multi-fuel supply module. The multi-injection control module is connected to the common rail pressure regulator module and installed on the side of the common rail pressure regulator module through a screw assembly. The multi-injection control module realizes independent adjustment of the flow rate, pressure and injection timing of each injector. The operating condition simulation module is installed below the multi-injection control module and connected to it through an electronic weighing device.

[0007] Furthermore, the multi-fuel supply module includes a diesel storage tank, a methanol storage tank, and a sealing oil storage tank, which are used to store diesel, methanol, and sealing oil media, respectively. Each of the diesel, methanol, and sealing oil storage tanks is equipped with an independent oil pump, an electronically controlled pressure regulating valve, and an inlet valve to achieve independent pumping and pressure regulation of the three media. The top of each of the diesel, methanol, and sealing oil storage tanks is equipped with a breather valve and a liquid level sensor to balance the pressure inside the tank and monitor the liquid level of the media in real time, preventing the pump from running dry.

[0008] Furthermore, the common rail pressure regulating module includes a diesel common rail pipe, a methanol common rail pipe, and a sealing oil line. Each of the three is equipped with a pressure regulating chamber and a pressure gauge, and each has six oil outlets. The diesel common rail pipe, methanol common rail pipe, and sealing oil line are all made of stainless steel and are passivated to prevent the corrosion of methanol.

[0009] Ideally, each of the six oil outlets on the diesel common rail, methanol common rail, and sealing oil line is equipped with an independent electronic pressure regulating valve. The multi-injection control module includes multiple injectors that can be connected to the diesel common rail, methanol common rail, and sealing oil line via corresponding electronic pressure regulating valves. Multiple injectors are installed sequentially and at intervals on the lead screw assembly.

[0010] Ideally, the lead screw assembly has a symmetrical structure, including lead screw motor assembly one and lead screw motor assembly two, which are set on opposite sides of the fuel test bench cabinet. There are two lead screw motor assemblies one on each side with a horizontal spacing between them. The lead screw motor assembly two is vertically set between the two lead screw motor assemblies one and connected to them respectively. The fixing plate is horizontally set between the two lead screw motor assemblies two and connected to them respectively. The fixing plate is used to install the multi-channel injection control module.

[0011] Furthermore, the operating condition simulation module includes a back pressure bottle, which is connected to a nitrogen cylinder or a high-pressure gas source via a pipeline. The pressure inside the back pressure bottle can be adjusted to simulate the back pressure environment inside the engine cylinder.

[0012] Furthermore, the fuel test bench cabinet serves as the installation and protection carrier for the equipment and adopts an explosion-proof design, including the cabinet body, explosion-proof glass observation windows and sliding doors installed on its sides, explosion-proof lights and searchlights installed inside, and support legs installed at its bottom. The cabinet body is made of high-strength carbon steel.

[0013] Ideally, the control and safety system includes a main control unit and a touch screen, a safety emergency stop module, and a sensor group connected to it. The touch screen is installed on the front of the fuel test bench cabinet to realize human-machine interaction. The safety emergency stop module includes multiple safety emergency stop buttons and integrates overpressure protection, overtemperature protection, and leakage alarm functions. The sensor group includes pressure sensors and temperature sensors to collect medium pressure and temperature data in real time. Pressure and temperature display gauges are installed on the front of the fuel test bench cabinet to display data. The main control unit is connected to the common rail fuel pipeline, injection system, and electronic weighing device via a CAN bus.

[0014] Ideally, the electronic weighing device includes an electronic scale, an oil collection cup, and a data communication module: a high-precision operating condition simulation module is placed on the electronic scale, which has a weighing accuracy of 0.1mg and a range covering the oil volume from a single injection to multiple cumulative injections, allowing for precise weighing of the injector's oil volume; the oil collection cup is located below the electronic scale to collect the sprayed liquid, and the liquid is discharged outside the device through a hose; the data communication module transmits the electronic scale's weighing data to the control and security system in real time.

[0015] Beneficial effects: Compared with the prior art, the advantages of the present invention are:

[0016] (1) Multi-fuel compatibility, greatly improving versatility;

[0017] This invention enables compatibility testing of fuels with different physicochemical properties through independent diesel, methanol, and sealing oil supply pipelines and pressure regulating systems. Addressing the corrosiveness of methanol fuel, the materials of key components such as the common rail and pipeline joints have been optimized, resolving the issue of traditional test benches being incompatible with oxygenated fuels. A single device can complete the testing of diesel injectors, methanol injectors, and dual-fuel injectors, significantly expanding the device's applicability and reducing the cost of investing in multiple devices for enterprises.

[0018] (2) Multi-channel independent control significantly enhances testing efficiency and flexibility;

[0019] The six fuel outlets are equipped with independent electronic pressure regulating valves, allowing for independent adjustment of the flow rate, pressure, and injection timing of each injector. It supports multiple modes, including single-channel individual testing, multi-channel synchronous consistency testing, and comparative testing of multiple injector models. It can simultaneously perform performance testing on six injectors, increasing testing efficiency by more than five times compared to traditional single-channel test benches. Furthermore, it can simulate the differentiated injection conditions of each engine cylinder, providing more realistic test data for the calibration of the engine injection system.

[0020] (3) Measurement accuracy has been significantly improved;

[0021] By simulating the back pressure environment inside the engine cylinder using a back pressure bottle, and in conjunction with a high-precision electronic weighing device, the actual injection conditions of the injector inside the engine are reproduced, avoiding the deviation between atmospheric pressure testing and actual operating conditions. The real-time data feedback of the electronic weighing device and the closed-loop correction mechanism of the control unit can achieve accurate measurement of the injection quantity. The error of a single injection quantity test is controlled within ±0.5%, and the repeatability and reliability of the test results are greatly improved, providing accurate data support for the research and development and quality control of injectors.

[0022] (4) Adjustable tooling design greatly optimizes adaptability and ease of operation;

[0023] The screw motor-driven lifting injector mounting bracket, along with multi-specification adapters, can quickly adapt to different lengths. Meanwhile, the sliding door and explosion-proof glass design of the cabinet ensure both ease of operation and visualized monitoring of the testing process.

[0024] (5) A sound safety protection system to eliminate safety hazards in the testing of flammable and explosive media;

[0025] This invention constructs a dual safety protection system of "active control + passive protection": at the active control level, real-time response to abnormal operating conditions is achieved through overpressure, overtemperature, and leakage alarms and emergency stop cut-off functions; at the passive protection level, explosion-proof cabinets, explosion-proof electrical components, leakage collection pipelines, and pressure relief circuits are used to effectively isolate media leakage and accidental sparks, prevent safety accidents, and meet the explosion-proof safety specifications of fuel test benches.

[0026] (6) Multi-dimensional data integration and analysis to support the entire process of R&D and quality control;

[0027] The control and safety system integrates the acquisition and analysis of multi-dimensional data such as pressure, temperature, and flow rate. It can automatically generate flow characteristic curves, fuel injection consistency data, etc., and supports data storage and export. This design not only provides comprehensive data support for injector performance optimization during the R&D phase, but also provides standardized testing basis for quality control in mass production, realizing digital and visual management of the testing process.

[0028] In summary, this invention solves the problems of poor versatility, low testing accuracy, and prominent safety hazards in existing fuel injector test benches by providing multi-fuel compatibility, multi-channel independent control, operating condition simulation, high-precision measurement, and comprehensive safety protection design. It can be widely used in the research, development, production, maintenance, and quality inspection of engine fuel injectors, and has significant technical advantages and application prospects. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0030] Figure 2 This is a front sectional view of the present invention;

[0031] Figure 3 This is a side sectional view of the present invention;

[0032] Figure 4 This is a three-dimensional structural diagram of the sliding door of the present invention when it is opened;

[0033] Figure 5 This is a three-dimensional structural diagram of the sliding door of the present invention when it is closed. Detailed Implementation

[0034] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0035] An adjustable base test bench suitable for multi-fuel, multi-type injectors, such as... Figures 1-5 As shown, the system includes a fuel test bench cabinet 100 and a control and security system 200, a common rail fuel pipeline and injection system 300, and an electronic weighing device 400, all of which are installed on the fuel test bench cabinet 100. The common rail fuel pipeline and injection system 300 and the electronic weighing device 400 are respectively connected to the control and security system 200 via signals.

[0036] The common rail fuel line and injection system 300 is the medium supply and injection control unit of this test bench, including a multi-fuel supply module, a common rail pressure stabilizing module, and a multi-injection control module. The multi-fuel supply module is installed in the lower part of the fuel test bench cabinet 100, the common rail pressure stabilizing module is installed in the upper part of the fuel test bench cabinet 100 and connected to the multi-fuel supply module, and the multi-injection control module is connected to the common rail pressure stabilizing module and installed on the side of the common rail pressure stabilizing module through a screw assembly. The multi-injection control module realizes independent adjustment of the flow rate, pressure and injection timing of each injector. The operating condition simulation module is installed below the multi-injection control module and connected to it through an electronic weighing device 400.

[0037] The multi-fuel supply module includes a diesel storage tank 301, a methanol storage tank 302, and a sealing oil storage tank 303, which are used to store diesel, methanol, and sealing oil media, respectively. The diesel storage tank 301, methanol storage tank 302, and sealing oil storage tank 303 are each equipped with an independent oil pump 304, an electronically controlled pressure regulating valve 305, and an oil inlet valve 317 to achieve independent pumping and pressure regulation of the three media. The top of the diesel storage tank 301, methanol storage tank 302, and sealing oil storage tank 303 are respectively equipped with a breather valve and a liquid level sensor, which can balance the pressure inside the tank and monitor the liquid level of the medium in real time to prevent the pump from running dry.

[0038] The common rail pressure stabilizing module includes a diesel common rail pipe 306, a methanol common rail pipe 307, and a sealing oil line 308. Each of these three pipes is equipped with a pressure stabilizing chamber 311 and a pressure gauge 309, and each has six oil outlets. The pressure stabilizing chamber 311 suppresses rail pressure fluctuations through volume buffering, ensuring the stability of the injection pressure of each line. The pressure gauge 309 can display the pressure value in the common rail pipe in real time, forming a dual verification with the pressure sensor data. The diesel common rail pipe 306, methanol common rail pipe 307, and sealing oil line 308 are all made of stainless steel and passivated to prevent methanol corrosion, improving the durability of the pipelines.

[0039] Each of the six outlet ports on the diesel common rail 306, methanol common rail 307, and sealing oil line 308 is equipped with an independent electronic pressure regulating valve 310. The multi-injection control module includes six injectors 312 that can be connected to the diesel common rail 306, methanol common rail 307, and sealing oil line 308 via corresponding electronic pressure regulating valves 310. The six injectors 312 are sequentially and spaced apart on the lead screw assembly. Each of the six outlet ports is equipped with an independent electronic pressure regulating valve. The opening status, opening degree, and opening and closing timing of each electronic pressure regulating valve can be individually controlled by the control unit to achieve independent adjustment of the flow rate, pressure, and injection timing of each injector. This design supports multiple testing modes: it can simultaneously perform consistency testing on six injectors of the same model, or it can perform individual testing on injectors of different models.

[0040] The lead screw assembly has a symmetrical structure, including a lead screw motor assembly 313 and a lead screw motor assembly 314, which are installed on opposite sides inside the fuel test bench cabinet 100. There are two lead screw motor assemblies 313 on each side with a horizontal spacing between them. The lead screw motor assembly 314 is vertically installed between the two lead screw motor assemblies 313 and connected to them respectively. The fixing plate 315 is horizontally installed between the two lead screw motor assemblies 314 and connected to them respectively. The fixing plate 315 is used to install the multi-channel injection control module.

[0041] The operating condition simulation module includes a back pressure bottle 316, located below the injector 312. The back pressure bottle 316 is connected to a nitrogen cylinder or high-pressure gas source via pipeline, allowing adjustment of the pressure within the back pressure bottle to simulate the back pressure environment within the engine cylinder (the pressure range covers idle to full load conditions). Simultaneously, the mounting position of the injector 312 can be adjusted via a bracket driven by a screw motor to accommodate injectors of different lengths and to adjust the distance between the injector and the electronic weighing device 400, optimizing fuel collection after injection.

[0042] The fuel test bench cabinet 100 serves as the installation and protection carrier for the equipment. It adopts an explosion-proof design and includes the cabinet body 101, an explosion-proof glass observation window 102 and a sliding door 103 installed on its side, an explosion-proof light 104 and a searchlight 105 installed inside, and support legs 106 installed at its bottom. The cabinet body 101 is made of high-strength carbon steel.

[0043] The cabinet body 101 is made of high-strength carbon steel. The explosion-proof glass observation window 102 and the sliding door 103 can isolate the test area from the external environment, preventing media leakage and accidental spark spread. The sliding door 103 can be quickly opened and closed, facilitating the installation and disassembly of the injector. The explosion-proof light 104 and the searchlight 105 provide illumination for the test area while meeting the electrical safety requirements of the explosion-proof environment. The screw motor drives the fixing plate 315 to achieve lifting and lowering movement, and the installation height can be adjusted according to the length of the injector to adapt to the installation requirements of different models of injectors. The side of the cabinet is equipped with an operation panel and a data interface. The operation panel integrates pressure gauges, temperature gauges, control buttons, etc., and the data interface supports data export and equipment networking via USB, Ethernet, etc., which facilitates the subsequent analysis and management of test data. The bottom of the cabinet is equipped with casters and leveling feet to facilitate the movement and leveling adjustment of the equipment.

[0044] The control and security system 200 includes a main control unit and a touch screen 201, a security emergency stop module, and a sensor group connected to it. The touch screen 201 is installed on the front of the fuel test bench cabinet 100 to realize human-machine interaction. The security emergency stop module includes multiple safety emergency stop buttons 202, which integrate overpressure protection, overtemperature protection, and leakage alarm functions. The sensor group includes pressure sensors and temperature sensors to collect medium pressure and temperature data in real time. Pressure gauges 203 and temperature gauges 204 are installed on the front of the fuel test bench cabinet 100 to display data. The main control unit is connected to the common rail fuel pipeline and injection system 300 and the electronic weighing device 400 via a CAN bus.

[0045] The 201 touchscreen display integrates a human-machine interface, enabling setting of test parameters (rail pressure, number of injections, injection frequency, back pressure value, etc.), real-time data display (rail pressure, flow rate, temperature, injection quantity for each channel), test mode selection (single-channel test, multi-channel synchronous test, consistency test, etc.), and data storage and export functions. The main control unit communicates with the electronically controlled pressure regulating valve, oil pump, and sensor group via a CAN bus to construct a closed-loop control logic: based on the set target rail pressure value, it adjusts the opening of the electronically controlled pressure regulating valve in real time to control the oil pump output flow rate, achieving dynamic stability of the rail pressure; simultaneously, it uses electronic weighing... The device 400 feeds back the fuel injection quantity data, automatically corrects the fuel injection parameters, and ensures test consistency. The safety emergency stop module integrates an emergency stop button, overpressure protection, overtemperature protection, and leakage alarm functions. When rail pressure exceeds the limit, temperature is abnormal, leakage exceeds the standard, or the emergency stop button is triggered, the power supply to the oil pump is immediately cut off and the oil inlet valve is closed to prevent safety accidents. Pressure / temperature sensors are respectively arranged at key locations such as the tank outlet, oil pump outlet, common rail, and injector inlet to collect medium pressure and temperature data in real time, providing feedback basis for closed-loop control of the control unit, and supporting the traceability of test data.

[0046] The electronic weighing device 400 includes an electronic scale, an oil collection cup 401, and a data communication module: a high-precision working condition simulation module is placed on the electronic scale, the electronic scale has a weighing accuracy of 0.1mg, and the range covers the oil volume range from single injection to multiple cumulative injections of the injector, which can accurately weigh the oil volume of the injector; the oil collection cup 401 is set below the electronic scale to collect the sprayed liquid, and the oil collection cup 401 discharges the liquid to the outside of the device through a hose; the data communication module transmits the electronic scale weighing data to the control and security system 200 in real time. The oil collecting cup 401 prevents fuel spraying and ensures that all sprayed fuel is collected, improving metering accuracy. Made of corrosion-resistant material, the cup is compatible with various media such as diesel and methanol. The data communication module transmits the weighing data from the electronic scale to the control and security system 200 in real time. The control unit can automatically calculate parameters such as single-injection quantity, flow deviation rate, and injection consistency based on the set number of injections and weighing results, and generate a visualized flow characteristic curve. The device supports multi-unit conversion, enabling display and analysis of various units such as g, mg, and mL, adapting to different standard testing requirements.

[0047] This invention enables universal testing of fuel injectors for multiple fuels, such as diesel and methanol, through independent multi-fuel supply, independent rail pressure control, operating condition simulation and high-precision weighing, adjustable installation fixtures, and comprehensive safety protection design. At the same time, it improves testing accuracy, efficiency, and equipment safety, providing a reliable testing platform for the research, development, production, and maintenance of fuel injectors.

Claims

1. A comprehensive test bench with an adjustable base suitable for multi-fuel and multi-type injectors, characterized in that: It includes a fuel test bench cabinet (100) and a control and security system (200), a common rail fuel pipeline and injection system (300), and an electronic weighing device (400) respectively installed on the fuel test bench cabinet (100). The common rail fuel pipeline and injection system (300) and the electronic weighing device (400) are respectively connected to the control and security system (200) by signal. The common rail fuel line and injection system (300) includes a multi-fuel supply module that stores multiple media. The multi-fuel supply module is installed in the lower part of the fuel test bench cabinet (100). The common rail pressure stabilizing module is installed in the upper part of the fuel test bench cabinet (100) and connected to the multi-fuel supply module. The multi-injection control module is connected to the common rail pressure stabilizing module and installed on the side of the common rail pressure stabilizing module through a screw assembly. The multi-injection control module realizes independent adjustment of the flow rate, pressure and injection timing of each injector. The operating condition simulation module is installed below the multi-injection control module and connected to it through an electronic weighing device (400).

2. The adjustable base integrated test bench for multi-fuel, multi-type injectors according to claim 1, characterized in that: The multi-fuel supply module includes a diesel storage tank (301), a methanol storage tank (302), and a sealing oil storage tank (303), which are used to store diesel, methanol, and sealing oil media, respectively. The diesel storage tank (301), methanol storage tank (302), and sealing oil storage tank (303) are each equipped with an independent oil pump (304), an electronically controlled pressure regulating valve (305), and an oil inlet valve (317) to realize independent pumping and pressure regulation of the three media. The top of the diesel storage tank (301), methanol storage tank (302), and sealing oil storage tank (303) are respectively equipped with a breather valve and a liquid level sensor, which can balance the pressure inside the tank and monitor the liquid level of the medium in real time to prevent the pump from running dry.

3. The adjustable base integrated test bench for multi-fuel, multi-type injectors according to claim 1, characterized in that: The common rail pressure regulating module includes a diesel common rail (306), a methanol common rail (307), and a sealing oil line (308). Each of the three is equipped with a pressure regulating chamber (311) and a pressure gauge (309), and each has six oil outlet holes. The diesel common rail (306), methanol common rail (307), and sealing oil line (308) are all made of stainless steel and are passivated to prevent the corrosion of methanol.

4. The adjustable base integrated test bench for multi-fuel, multi-type injectors according to claim 3, characterized in that: Each of the six oil outlet holes on the diesel common rail (306), methanol common rail (307) and sealing oil line (308) is equipped with an independent electronic pressure regulating valve (310). The multi-injection control module includes multiple injectors (312) that can be connected to the diesel common rail (306), methanol common rail (307) and sealing oil line (308) through the corresponding electronic pressure regulating valves (310). Multiple injectors (312) are installed sequentially and at intervals on the screw assembly.

5. A comprehensive test bench with an adjustable base suitable for multi-fuel and multi-type injectors as described in claim 1 or 4, characterized in that: The lead screw assembly has a symmetrical structure, including a lead screw motor assembly one (313) and a lead screw motor assembly two (314) set on opposite sides inside the fuel test bench cabinet (100). There are two lead screw motor assemblies one (313) on each side with horizontal spacing. The lead screw motor assembly two (314) is vertically set between the two lead screw motor assemblies one (313) and connected to them respectively. The fixing plate (315) is horizontally set between the two lead screw motor assemblies two (314) and connected to them respectively. The fixing plate (315) is used to install the multi-channel injection control module.

6. The adjustable base integrated test bench for multi-fuel, multi-type injectors according to claim 1, characterized in that: The operating condition simulation module includes a back pressure bottle (316), which is connected to a nitrogen cylinder or a high-pressure gas source through a pipeline. The pressure inside the back pressure bottle can be adjusted to simulate the back pressure environment inside the engine cylinder.

7. The adjustable base integrated test bench for multi-fuel and multi-type injectors according to claim 1, characterized in that: The fuel test bench cabinet (100) serves as the installation and protection carrier for the equipment. It adopts an explosion-proof design and includes the cabinet body (101), an explosion-proof glass observation window (102) and a sliding door (103) installed on its side, an explosion-proof light (104) and a searchlight (105) installed inside it, and a support leg (106) installed at its bottom. The cabinet body (101) is made of high-strength carbon steel.

8. The adjustable base integrated test bench for multi-fuel and multi-type injectors according to claim 1, characterized in that: The control and security system (200) includes a main control unit and a touch screen (201) connected to it, a security emergency stop module and a sensor group. The touch screen (201) is installed on the front of the fuel test bench cabinet (100) to realize human-machine interaction. The security emergency stop module includes multiple safety emergency stop buttons (202) and integrates overpressure protection, overtemperature protection and leakage alarm functions. The sensor group includes pressure sensors and temperature sensors to collect medium pressure and temperature data in real time. Pressure display gauge (203) and temperature display gauge (204) are installed on the front of the fuel test bench cabinet (100) to display data. The main control unit is connected to the common rail fuel pipeline and injection system (300) and electronic weighing device (400) via CAN bus.

9. The adjustable base integrated test bench for multi-fuel and multi-type injectors according to claim 1, characterized in that: The electronic weighing device (400) includes an electronic scale, an oil collection cup (401) and a data communication module: a high-precision working condition simulation module is placed on the electronic scale, the weighing accuracy of the electronic scale is 0.1mg, and the range covers the oil volume range from single injection to multiple cumulative injections of the injector, which can accurately weigh the oil volume of the injector. An oil collection cup (401) is located below the electronic scale to collect the sprayed liquid. The oil collection cup (401) discharges the liquid to the outside of the equipment through a hose. The data communication module transmits the weighing data of the electronic scale to the control and security system (200) in real time.

Images