Engine ignition system working process display and ignition performance detection rack

Abstract

An engine ignition system working process display and ignition performance detection rack comprises a display workbench, a visual air cylinder assembly, a pressure air supply control device, an ignition simulation control system and an oscilloscope, the display workbench is composed of a chopping board, a vertical board and a supporting frame, and the front face of the vertical board is divided into an ignition control schematic diagram area and a pressure debugging display area. The beneficial effects of the invention are that on the basis of displaying the control principle and the structure of the ignition system of the combustion engine, the working states of the ignition coil and the spark plug which are key components in the ignition system can be visually demonstrated, and different working conditions of starting, idling, acceleration and the like of the engine can be simulated; the change of the ignition performance can be observed, the influence relation between the ignition performance and the factors such as the engine working speed and the cylinder pressure can be displayed, and meanwhile the working performance of the ignition coil and the spark plug can be tested.

Description

Technical Field

[0001] The invention relates to the technical field of teaching tools, and in particular to a working process display and ignition performance detection bench for an engine ignition system. Background Art

[0002] In the automotive technical service major in vocational education, automobile ignition system control technology is knowledge that students must master. In the process of teaching the engine ignition system, teachers need to explain the ignition system principle, ignition energy and ignition time, breakdown voltage and other contents. The current method mainly relies on teachers to use PPT to explain, or teachers make animation videos for explanation, or take the method of disassembling the physical car to explain, etc., so that students can understand the content of the teacher's explanation. However, since the working process of the ignition system is complicated and difficult to describe, and there are many factors that affect the ignition performance, it is difficult for students to understand with abstract explanations; In addition, there is currently no convenient instrument for quickly testing the working performance of ignition coils and spark plugs, and it is difficult to detect their working status. The existing practices are: first, manual measurement using an oscilloscope, which has the following disadvantages: 1. Since the ignition voltage is as high as tens of thousands of volts, there are certain safety hazards during the detection operation; 2. It is difficult to observe the actual high-voltage ignition state; second, the simulation of the ignition state for measurement has the disadvantage that the working status of the ignition coil and spark plug cannot be observed intuitively during ignition, and the working performance of the spark plug cannot be quantified. Therefore, it is necessary to design a test bench that can safely, intuitively and quickly display the working process and ignition performance of the engine ignition system, and can test the working performance of the ignition coil and spark plug, especially to intuitively display the impact of cylinder pressure changes on ignition performance, improve the efficiency of teachers' lectures, and let students intuitively understand the mastery of ignition system control technology knowledge points. Summary of the invention

[0003] In view of the problems existing in the prior art, the present invention provides an engine ignition system working process display and ignition performance test bench, which can simulate the engine working state and intuitively demonstrate the working state of the key components of the ignition system, the ignition coil and the spark plug, and can also test the working performance of the ignition coil and the spark plug.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: An engine ignition system working process display and ignition performance test bench, including a display workbench, a visual cylinder assembly, a pressure air supply control device, an ignition simulation control system and an oscilloscope. The display workbench is composed of a table board, a vertical board and a support frame. The front of the vertical board is divided into an ignition control schematic area, a pressure debugging display area, a control debugging area, a detection port area and an oscilloscope. The visible cylinder assembly is fixed on the base, which is connected to the chopping board. The visible cylinder assembly consists of four transparent cylindrical cylinders made of pressure-resistant materials and a metal plate. Metal plates with seals are installed on both upper and lower end surfaces of the cylinders. Spark plug mounting holes and air supply connection holes for mounting different types are respectively provided on the upper and lower end surfaces of the metal plate at positions corresponding to each cylinder, and an ignition coil bracket is provided on the rear side of the end surface of the metal plate; The pressure air supply control device comprises an air storage tank installed on the bottom surface of the chopping board, an air supply pipeline made of a high-pressure hose, a main control valve, a main control pressure gauge, four pressure regulating valves and a visual cylinder pressure gauge. The air storage tank is connected to the visual cylinder assembly through the air supply pipeline. A main control valve and a main control pressure gauge are provided on the air supply pipeline at the outlet end of the air storage tank, and four pressure regulating valves are connected in parallel on the pipeline at the other end of the main control pressure gauge. Each pressure regulating valve is connected in series with a single visual cylinder pressure gauge. The pipeline at the other end of the visual cylinder pressure gauge is respectively connected to the air supply connection holes at the bottom ends of the corresponding four cylinders. The main control valve, main control pressure gauge, four pressure regulating valves and visual cylinder pressure gauge are all arranged on the surface of the vertical plate, which is convenient for displaying and adjusting the pressure operation; Furthermore, the ignition simulation control system is composed of a power module, a main control program controller, a touch screen control panel, a working indicator light, a detection port, an ignition coil, a spark plug and a knob; The power module is arranged inside the support frame, the touch screen control panel, the working indicator light, and the detection port are located on the front side of the vertical plate, the main control program controller is located on the inner side of the support frame, the ignition coil is inserted into the ignition coil bracket, the ignition coil is connected to the spark plug through a high-voltage wire, and the four spark plugs are respectively installed in the spark plug mounting holes set on the upper end surface of the metal plate corresponding to each cylinder.

[0005] Furthermore, the four channel terminals of the oscilloscope are respectively connected to the ignition high-voltage wires of each cylinder through a secondary ignition detection probe.

[0006] Furthermore, the ignition control schematic diagram area adopts a magnetic loose-leaf method to adsorb the ignition control schematic diagram on the surface of the vertical plate, and a QR code of video materials related to the working principle of the ignition system and detection operation is provided below the ignition control schematic diagram area.

[0007] Furthermore, the pressure debugging display area includes a main control valve, a main control pressure gauge, four pressure regulating valves and a visual cylinder pressure gauge corresponding to each cylinder in the pressure supply control system.

[0008] Furthermore, the control and debugging area includes a touch screen control panel, working indicator lights and knobs in the ignition simulation control system. The working indicator lights are a power indicator light and a run indicator light. The knobs are a stop / start knob and a voltage adjustment knob. The adjustment positions of the voltage adjustment knob are 8V, 10V and 12V respectively.

[0009] Furthermore, the detection port area includes a detection port in the ignition simulation control system, and the detection port is a spark plug primary voltage test port and a voltage debugging interface.

[0010] Furthermore, the metal plates at the upper and lower end surfaces of the cylinder are fastened and connected by bolts, and are fixed to the base by long bolts at positions of the metal plates near the corners.

[0011] Furthermore, the chopping board and the vertical board are both installed on the support frame, and the chopping board and the vertical board are vertically distributed, and universal wheels are provided at the four corners of the bottom surface of the support frame.

[0012] Furthermore, the ignition simulation control system adopts a PLC control system, which can steplessly adjust the charging time of the primary ignition coil and simulate the engine speed to control the ignition frequency. Beneficial Effects

[0013] The beneficial effects of the present invention are as follows: 1. The present invention can demonstrate the control principle and structure of the combustion engine ignition system, and can intuitively demonstrate the working status of the key components of the ignition system, the ignition coil and the spark plug. It can simulate the engine in different working conditions such as starting, idling, and acceleration, and can observe the changes in its ignition performance, and show the influence of factors such as the ignition performance and the engine operating speed and cylinder pressure. At the same time, the working performance of the ignition coil and the spark plug can be tested.

[0014] 2. The present invention can fully demonstrate the engine ignition process and simulate the engine ignition performance test. When giving lectures, teachers can explain and demonstrate in-depth and easy-to-understand problems that are difficult to explain in the teaching process of the ignition system, and solve the secondary ignition due to high pressure The related problems such as difficulty in detecting, make up for the problem that students are difficult to understand the working process of the ignition system through abstract thinking due to insufficient relevant practical training equipment in classroom teaching and practical training. It improves students' learning interest in an intuitive way and facilitates students to master the working process of the engine ignition system and related knowledge. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 A front view showing a workbench of the present invention; Figure 3 A right side view of a workbench showing the present invention; Figure 4 It is a schematic diagram of the overall structure of the visual cylinder assembly of the present invention; Figure 5 It is a working principle diagram of the pressure air supply control device of the present invention; Figure 6 It is a schematic diagram of the vertical plate surface pressure debugging display area and the oscilloscope distribution state of the present invention; Figure 7 It is a schematic diagram of the distribution state of the control and debugging area and the detection port area of ​​the vertical board surface of the present invention; Figure 8 It is a flowchart of the workflow of the present invention.

[0016] Description of reference numerals: 1. Display workbench, 11. Cutting board, 12. Vertical board, 121. Ignition control schematic diagram area, 122. Pressure debugging display area, 123. Control debugging area, 124. Detection port area, 13. Support frame, 131. Universal wheel, 2. Visual cylinder assembly, 21. Cylinder, 22. Metal plate, 2201. Spark plug mounting hole, 2202. Air supply connection hole, 23. Base, 24. Ignition coil bracket, 3. Pressure air supply control device, 31. Gas storage tank, 32. Gas supply pipeline, 33. Main control valve, 34. Main control pressure gauge, 35. Pressure regulating valve, 36. Visual cylinder pressure gauge, 4. Ignition simulation control system, 41. Power module, 42. Main control program controller, 43. Touch screen control panel, 44. Working indicator light, 45. Detection port, 451. Spark plug primary voltage test port, 452. Voltage debugging interface, 46. Ignition coil, 47. Spark plug, 5. Oscilloscope. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0018] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. Through technicians in this field, all electrical components in this case are connected to their compatible power supplies through wires, and appropriate controllers and encoders should be selected according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the following working principle in which the electrical components work in sequence to complete the electrical connection. The detailed connection means are well-known technologies in this field, and the electrical control will not be explained again.

[0019] Below we first combine the attached Figures 1 to 8 Specifically describe the embodiments of the present invention. See also Figure 1-Figure 3 A workbench for displaying the working process of an engine ignition system and detecting ignition performance, comprising a display workbench 1, a visual cylinder assembly 2, a pressure air supply control device 3, an ignition simulation control system 4 and an oscilloscope 5. The display workbench 1 is composed of a chopping board 11, a vertical board 12 and a support frame 13. Universal wheels 131 are arranged at the four corners of the bottom surface of the support frame 13. The arrangement of the universal wheels 131 facilitates the movement of the display workbench, and the display workbench can be moved to a teaching classroom or a practical operation room at will. The front of the vertical board 12 is divided into an ignition control schematic diagram area 121, a pressure debugging display area 122, a control debugging area 123, a detection port area 124 and an oscilloscope 5. The regionalized design of the vertical board 1 makes it convenient for students to intuitively understand the teaching content in the teaching classroom.

[0020] See also Figure 4 The visible cylinder assembly 2 is fixed on the base 23, and the base 23 is connected to the chopping board 11. The visible cylinder assembly 2 is composed of four transparent cylindrical cylinders 21 and metal plates 22 made of pressure-resistant materials. Metal plates 22 with seals are installed on the upper and lower end surfaces of the cylinders 21. Spark plug mounting holes 2201 and air supply connection holes 2202 for installing different types are respectively provided at the positions corresponding to each cylinder on the upper and lower end surfaces of the metal plates 22. The metal plates 22 on the upper and lower end surfaces of the cylinders 21 are fastened and connected by bolts, and are fixed to the base 23 by long bolts at the positions of the metal plates 22 near the corners, and an ignition coil bracket 24 is provided on the rear side of the upper end surface of the metal plates 22; Spark plug mounting hole 2201 can be used to install spark plugs of different types. The hole wall of mounting hole 2201 is provided with threads, and the spark plug is screwed into mounting hole 2201 through the threads on the outside of its metal shell; the air supply connection hole 2202 can be connected to the air supply pipeline.

[0021] See also Figure 5The pressure air supply control device 3 includes an air storage tank 31 installed on the bottom surface of the chopping board 11, an air supply pipeline 32 made of a high-pressure hose, a main control valve 33, a main control pressure gauge 34, four pressure regulating valves 35 and a visual cylinder pressure gauge 36. The air storage tank 31 is connected to the visual cylinder assembly 2 through the air supply pipeline 32. The main control valve 33 and the main control pressure gauge 34 are provided on the air supply pipeline at the outlet end of the air storage tank 31, and four pressure regulating valves 35 are connected in parallel on the pipeline at the other end of the main control pressure gauge 34. 5. Each pressure regulating valve 35 is connected in series with a single visual cylinder pressure gauge 36. The other end of the pipeline of the visual cylinder pressure gauge 36 is respectively connected to the gas supply connection holes 2202 at the bottom ends of the corresponding four cylinders 21. During teaching, the gas source is provided by the gas storage tank 31, and the pressure in the corresponding cylinder is controlled by the pressure regulating valve 35 corresponding to each cylinder, and the pressure value can be displayed by the corresponding visual cylinder pressure gauge, which is convenient for students to operate and intuitively understand different pressure changes.

[0022] See also Figure 6 The main control valve 33, the main control pressure gauge 34, four pressure regulating valves 35 and the visual cylinder pressure gauge 36 are all arranged on the surface of the vertical plate 12, which is convenient for displaying and adjusting the pressure operation.

[0023] As a preferred solution, please refer to Figure 2 , Figure 7 and Figure 8 The ignition simulation control system 4 is composed of a power module 41, a main control program controller 42, a touch screen control panel 43, a working indicator light 44, a detection port 45, an ignition coil 46, a spark plug 47 and a knob 48; The power module 41 is arranged inside the support frame 13, the touch screen control panel 43, the working indicator light 44, and the detection port 45 are located on the front of the vertical plate 12, the main control program controller 42 is located on the inner side of the support frame 13, and the ignition coil 46 is inserted into the ignition coil bracket 24. The ignition coil 46 is connected to the spark plug 47 through a high-voltage wire. The four spark plugs 47 are respectively installed in the spark plug mounting holes 2201 set corresponding to each cylinder on the upper end surface of the metal plate 22.

[0024] As a preferred solution, further, the four channel terminals of the oscilloscope 5 are respectively connected to the ignition high-voltage wires of each cylinder 21 through a secondary ignition detection probe.

[0025] As a preferred solution, further, the ignition control schematic diagram area 121 adopts a magnetic loose-leaf method to adsorb the ignition control schematic diagram on the surface of the vertical plate 12, and a QR code of video materials related to the working principle of the ignition system and the detection operation is provided below the ignition control schematic diagram area; The QR codes of the ignition control schematic diagram and the ignition system working principle and detection operation-related video materials are all magnetically attached to the surface of the vertical board in a loose-leaf manner. They can be replaced according to the content of the teacher's lecture, making it convenient for students to scan the code for self-study.

[0026] See also Figure 6 The pressure debugging display area 122 includes a main control valve 33, a main control pressure gauge 34, four pressure regulating valves 35 and a visual cylinder pressure gauge 36 corresponding to each cylinder in the pressure supply control system 2.

[0027] See also Figure 7 The control and debugging area 123 includes a touch screen control panel 43, a working indicator light 44 and a knob 48 in the ignition simulation control system 4. The working indicator lights 44 are respectively a power indicator light and a running indicator light. The knobs 48 are respectively a stop / start knob and a voltage adjustment knob. The adjustment positions of the voltage adjustment knob are 8V, 10V and 12V respectively.

[0028] During the teaching process, when the power indicator light and the running indicator light up, it indicates that the power is connected. The voltage adjustment knob can simulate the primary power supply voltage of the ignition coil. When the battery is low, the primary power supply voltage state of the ignition coil is also different. The voltage adjustment knob can simulate the power supply voltage of three gears: 8V / 10V / 12V.

[0029] See also Figure 7 The detection port area 124 includes the detection port 45 in the ignition simulation control system 4 , and the detection port 45 is a spark plug primary voltage test port 451 and a voltage interface 452 .

[0030] Detection port 451 is a power supply and four ignition coil primary power supply detection port, 452 is located at the power supply loop and four ignition coil primary power supply loop grounding detection port, simulates the detection of the voltage state in the ignition system primary coil power supply loop.

[0031] As a preferred solution, further, the ignition simulation control system adopts a PLC control system, which can steplessly adjust the charging time of the primary ignition coil and simulate the engine speed to control the ignition frequency.

[0032] Working principle: 1. Realize the modern electronic ignition system structure and ignition principle display function It can be used to demonstrate the structure of the ignition system and its working principle during the teaching process, which is convenient for teachers to teach and students to understand the teaching content. It can also be used for practical training operations such as component disassembly and assembly and testing.

[0033] By installing the spark plug 47 in the spark plug mounting hole 2201 in different cylinders 21, students can intuitively understand the structure and model of the spark plug during the teaching process. When demonstrating the working principle of the ignition system, the top connector of the spark plug 47 can be inserted into the rubber sleeve of the ignition coil 46 respectively, and students can observe the ignition status of the spark plug 47 through the visible cylinder; when students learn the DSI direct ignition method and the group ignition method, they can understand the ignition system structure and circuit diagram according to the relevant loose-leaf content in the ignition control schematic area 121 on the vertical plate 12, and by replacing the ignition coil of the DSI direct ignition method and the ignition coil of the group ignition method, they can become familiar with the working principle and connection operation of the ignition system and observe the ignition status of the spark plug when the ignition system is working.

[0034] 2. Realize the simulation and display function of the relationship between engine ignition performance and its influencing factors The engine ignition performance is greatly affected by system voltage, speed conditions, primary coil charging time, ignition closing angle, cylinder compression pressure, temperature and other operating conditions, as well as spark plug gap and other conditions.

[0035] In a specific application, the high-voltage detection probe of the oscilloscope 5 is connected to the high-voltage wire, and the secondary ignition detection probe is connected to the ignition high-voltage wire of each cylinder 21 respectively. Then, according to the content to be tested, the oscilloscope 5 is set up, and the ignition trigger, ignition output, ignition advance angle, etc. are measured in the component measurement mode, such as Figure 7 , Figure 8 As shown, taking the OTC3840C dual-channel oscilloscope as an example, in specific operation, measuring channel A and channel B, that is, measuring the working status of the spark plugs of cylinders 1 and 2, the secondary ignition detection probe connected to oscilloscope 5 can be connected to the ignition coils of cylinders 1 and 2 respectively. Through the secondary waveform display of oscilloscope 5, students can observe the ignition primary coil charging time, ignition triggering time, ignition breakdown voltage, ignition duration and other ignition state parameters, so as to intuitively observe the engine mechanical performance (cylinder pressure state adjustment) and the impact of working conditions on ignition performance. The ignition secondary voltage waveform analysis method can be obtained by scanning the QR code below the ignition control schematic area 121 on the vertical plate to obtain the relevant explanation video.

[0036] The test of ignition energy and ignition energy distribution are the key to engine ignition performance. The control circuit performs stepless adjustment control on the power-on time of the primary coil of the ignition coil to simulate the change of the ignition closing angle at different engine speeds. The state of ignition performance and the influencing condition parameters can be displayed intuitively through the oscilloscope 5 in the form of synchronous display of current and voltage waveforms. By adjusting the primary charging time of the ignition coil and simulating the ignition coil at high engine speed, students can directly observe that the short primary charging time of the ignition coil leads to insufficient primary energy reserve of the ignition coil, which affects the mutual inductance electromotive force of the secondary coil and will lead to ignition failure. Students can also understand the structural characteristics of independent ignition coils and other types of ignition coils.

[0037] When simulating changes in engine operating conditions or ignition system component failures, the ignition process and energy change and distribution status can be displayed intuitively, solving problems such as the difficulty in detecting safety hazards caused by the high operating pressure of the ignition system and the difficulty in simulating the ignition status.

[0038] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A bench for displaying the working process of an engine ignition system and detecting ignition performance, comprising a display workbench (1), a visual cylinder assembly (2), a pressure air supply control device (3), an ignition simulation control system (4) and an oscilloscope (5), characterized in that: The display workbench (1) is composed of a chopping board (11), a vertical board (12) and a support frame (13); the front side of the vertical board (12) is divided into an ignition control schematic area (121), a pressure debugging display area (122), a control debugging area (123), a detection port area (124) and an oscilloscope (5); The visible cylinder assembly (2) is fixed on a base (23), and the base (23) is connected to a chopping board (11). The visible cylinder assembly (2) is composed of four transparent cylindrical cylinders (21) made of pressure-resistant materials and a metal plate (22). The metal plate (22) with a seal is installed on both upper and lower end surfaces of the cylinder (21). Spark plug mounting holes (2201) and air supply connection holes (2202) for mounting different types of spark plugs are respectively provided at positions corresponding to each cylinder on the upper and lower end surfaces of the metal plate (22), and an ignition coil bracket (24) is provided on the rear side of the upper end surface of the metal plate (22); The pressure air supply control device (3) comprises an air storage tank (31) mounted on the bottom surface of the chopping board (11), an air supply pipeline (32) made of a high-pressure hose, a main control valve (33), a main control pressure gauge (34), four pressure regulating valves (35) and a visual cylinder pressure gauge (36); the air storage tank (31) is connected to the visual cylinder assembly (2) via the air supply pipeline (32); a main control valve (33) and a main control air pressure gauge (34) are provided on the air supply pipeline at the outlet end of the air storage tank (31); four pressure regulating valves (35) are connected in parallel on the pipeline at the other end of the main control pressure gauge (34); each pressure regulating valve (35) is connected in series with a single visual cylinder pressure gauge (36); and the pipeline at the other end of the visual cylinder pressure gauge (36) is respectively connected to the air supply connection holes (2202) at the bottom ends of the corresponding four cylinders (21); The main control valve (33), the main control pressure gauge (34), the four pressure regulating valves (35) and the visual cylinder pressure gauge (36) are all arranged on the surface of the vertical plate (12) to facilitate display and pressure adjustment operations.

2. The engine ignition system working process display and ignition performance testing bench according to claim 1, characterized in that: The ignition simulation control system (4) is composed of a power module (41), a main control program controller (42), a touch screen control panel (43), a working indicator light (44), a detection port (45), an ignition coil (46), a spark plug (47) and a knob (48); The power module (41) is arranged inside the support frame (13); the touch screen control panel (43), the working indicator light (44), and the detection port (45) are located on the front side of the vertical plate (12); the main control program controller (42) is located on the inner side of the support frame (13); the ignition coil (46) is inserted into the ignition coil bracket (24); the ignition coil (46) is connected to the spark plug (47) through a high-voltage wire; and the four spark plugs (47) are respectively installed in the spark plug installation hole (2201) arranged on the upper end surface of the metal plate (22) corresponding to each cylinder.

3. The engine ignition system working process display and ignition performance testing bench according to claim 1, characterized in that: The four channel terminals of the oscilloscope (5) are respectively connected to the ignition high-voltage wires of the cylinders (21) via secondary ignition detection probes.

4. The engine ignition system working process display and ignition performance testing bench according to claim 1 is characterized by: The ignition control schematic diagram area (121) adopts a magnetic loose-leaf method to adsorb the ignition control schematic diagram on the surface of the vertical plate (12), and a QR code of video materials related to the working principle of the ignition system and the detection operation is provided below the ignition control schematic diagram area.

5. The engine ignition system working process display and ignition performance testing bench according to claim 1 is characterized by: The pressure debugging display area (122) includes a main control valve (33) in the pressure supply control system (2), a main control pressure gauge (34), four pressure regulating valves (35), and a visual cylinder pressure gauge (36) corresponding to each cylinder.

6. The engine ignition system working process display and ignition performance testing bench according to claim 1, characterized in that: The control and debugging area (123) includes a touch screen control panel (43), a working indicator light (44) and a knob (48) in the ignition simulation control system (4), wherein the working indicator light (44) is a power indicator light and a running indicator light, and the knob (48) is a stop / start knob and a voltage adjustment knob, and the adjustment gears of the voltage adjustment knob are 8V, 10V and 12V respectively.

7. The engine ignition system working process display and ignition performance testing bench according to claim 1 is characterized by: The detection port area (124) includes a detection port (45) in the ignition simulation control system (4), and the detection port (45) is a spark plug primary voltage test port (451) and a voltage debugging interface (452).

8. The engine ignition system working process display and ignition performance testing bench according to claim 1 is characterized by: The metal plates (22) at the upper and lower end surfaces of the cylinder (21) are fastened together by bolts, and are fixed to the base (23) by long bolts at positions near the corners of the metal plates (22).

9. The engine ignition system working process display and ignition performance testing bench according to claim 1 is characterized by: The chopping board (11) and the vertical board (12) are both mounted on the support frame (13), and the chopping board (11) and the vertical board (12) are vertically distributed, and universal wheels (131) are provided at the four corners of the bottom surface of the support frame (13).

10. The engine ignition system working process display and ignition performance testing bench according to claim 1 is characterized by: The ignition simulation control system adopts a PLC control system, which can steplessly adjust the charging time of the primary ignition coil and simulate the engine speed to control the ignition frequency.

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