Calibration equipment and calibration method of engine leak detection system

Abstract

The invention discloses calibration equipment and a calibration method for an engine leak detection system, and relates to the technical field of engine manufacturing. The calibration device of the engine leak detection system comprises at least one simulation cylinder module used for accommodating test gas; the at least one group of simulation interface modules are correspondingly connected with the at least one simulation cylinder module; the at least one standard air leakage port module is correspondingly connected with the at least one simulation air cylinder module; the input module is used for acquiring a test instruction; and the control module is used for controlling the gas capacity of each simulation cylinder module and controlling the on-off state of each standard gas leakage port module according to the test instruction so as to calibrate the engine leakage detection system to be calibrated. According to the technical scheme, multi-standard calibration can be carried out on the engine leak detection system, the calibration efficiency is effectively improved, the calibration accuracy and the calibration efficiency of the engine leak detection system are improved, and the calibration cost is reduced.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of engine manufacturing, and in particular to a calibration device and a calibration method for an engine leak detection system. Background Art

[0002] As the power source of a vehicle, the engine is the most important component of the vehicle. The engine block is usually manufactured using a casting process. During the casting process, the engine body may have defects such as small cracks due to various reasons. Some defects are difficult to see with the human eye. Therefore, in order to accurately determine whether the engine has defects, the engine leak detection system can usually be used to perform air tightness tests on the engine oil channel, water channel, and fuel channel after the engine block is processed. In order to ensure the test accuracy of the engine leak detection system, it is usually necessary to calibrate the leak detection system.

[0003] At present, an engine is usually used as a standard engine for leak detection equipment to simulate the engine so as to calibrate the leak detection system. However, the leak detection equipment in the prior art cannot implement leak tests of different standards, and thus cannot meet the requirements for accurate calibration of the engine leak detection system. Summary of the invention

[0004] The invention provides a calibration device and a calibration method for an engine leak detection system, so as to realize multi-standard rapid calibration of the engine leak detection system.

[0005] A first aspect of the present invention provides a calibration device for an engine leak detection system, comprising:

[0006] at least one simulated cylinder module for containing a test gas;

[0007] At least one group of simulation interface modules correspondingly connected to at least one of the simulation cylinder modules;

[0008] At least one standard air leakage port module connected corresponding to at least one of the simulated cylinder modules;

[0009] Input module, used to obtain test instructions;

[0010] The control module is used to control the gas capacity of each of the simulated cylinder modules and the switch state of each of the standard air leakage port modules according to the test instruction, so as to calibrate the engine leak detection system to be calibrated.

[0011] Optionally, the standard air leakage port module includes a standard air leakage port and an air leakage solenoid valve arranged at the standard air leakage port;

[0012] The control module is used for controlling the air leakage solenoid valve to open when the test instruction includes a test instruction for unqualified process setting, so that the standard air leakage port releases the test gas in the simulated cylinder module at a preset leakage rate.

[0013] Optionally, the control module is further configured to control the air leakage solenoid valve to close when the test instruction includes a test instruction for a qualified process setting, so as to prevent the test gas in the simulated cylinder module from being released from the standard air leakage port.

[0014] Optionally, the simulated cylinder module includes a plurality of cylinder units, and a cylinder solenoid valve respectively arranged on each of the cylinder units;

[0015] The control module is used to control the opening or closing of the cylinder solenoid valve according to the test instruction for capacity setting when the test instruction includes a test instruction for capacity setting, so as to control the gas capacity of the simulated cylinder module.

[0016] Optionally, the simulated cylinder module comprises a first simulated cylinder module;

[0017] The first simulated cylinder module includes N cylinder units, each cylinder unit has a different gas capacity, and N is a positive integer greater than 1.

[0018] Optionally, the input module includes a button assembly and a control panel;

[0019] The control module is connected to the button assembly and the control panel respectively;

[0020] The button component is used to obtain a test instruction;

[0021] The control panel is used to obtain test instructions and display the calibration process and calibration results;

[0022] The control module is also used to control the control panel to display according to the test instruction.

[0023] Optionally, the calibration device of the engine leak detection system further includes:

[0024] a fuselage, wherein the simulated cylinder module is accommodated in the fuselage;

[0025] The control panel and the button assembly are both rotatably connected to the body.

[0026] Optionally, a walking wheel assembly is installed on the fuselage.

[0027] A second aspect of the present invention provides a calibration method for an engine leak detection system, which is performed by using a control module in the calibration device for the engine leak detection system as described above, and comprises:

[0028] Acquire a test instruction for capacity setting based on the input module;

[0029] controlling the gas capacity of the simulated cylinder module according to the test instruction of the capacity setting;

[0030] After the analog interface module is connected to the engine leak detection system to be calibrated, obtaining a test instruction for calibration process settings;

[0031] After the simulated cylinder module is filled with the test gas to a set state, the switch state of the standard leakage port module is controlled according to the test instructions set in the calibration process, so that the test gas in the simulated cylinder module leaks within the leakage rate calibration range, thereby calibrating the engine leak detection system to be calibrated.

[0032] Optionally, the calibration method of the engine leak detection system, after the simulated cylinder module is filled with the test gas to a set state, controls the switch state of the standard leak port module according to the test instruction set in the calibration process, so that the test gas in the simulated cylinder module leaks within the leakage rate calibration range, and calibrates the engine leak detection system to be calibrated, including:

[0033] When the test instructions set in the calibration process include the test instructions set in the qualified process, the standard air leakage port module is controlled to be in a closed state, so that the test gas in the simulated cylinder module leaks within the qualified leakage rate calibration range, and the qualified part test process of the engine leak detection system to be calibrated is calibrated;

[0034] When the test instructions set in the calibration process include test instructions set in the unqualified process, the standard air leakage port module is controlled to be in an open state so that the test gas in the simulated cylinder module leaks within the unqualified leakage rate calibration range, and the unqualified part test process of the engine leak detection system to be calibrated is calibrated.

[0035] The technical solution provided by the present invention, by setting a simulated cylinder module, a simulated interface module, a standard leakage port module, an input module and a control module, enables the control module to obtain a test instruction through the input module, and controls the gas capacity of the simulated cylinder module according to the test instruction, thereby realizing rapid switching of the gas capacity and meeting the calibration requirements of an engine leak detection system for detecting engines of different models; at the same time, the control module can also control the switching state of each standard leakage port module according to the test instruction, so as to control the test gas in the simulated cylinder module to leak according to different standards, thereby realizing multi-standard calibration of the engine leak detection system, ensuring the accuracy of the calibration and the reliability of the system, effectively improving the calibration efficiency and reducing the calibration cost.

[0036] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. 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 creative work.

[0038] Figure 1 to Figure 2 It is a schematic diagram of the three-dimensional structure of a calibration device of an engine leak detection system provided by an embodiment of the present invention at different viewing angles;

[0039] Figure 3 is a schematic cross-sectional structural diagram of a calibration device for an engine leak detection system provided by an embodiment of the present invention;

[0040] Figures 4 to 8 It is a schematic diagram of the planar structure of a calibration device of a transmitter leakage detection system provided by an embodiment of the present invention at different viewing angles;

[0041] Fig. 9 The present invention is a flowchart of a calibration method for an engine leak detection system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0043] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0044] Figure 1 to Figure 2 is a schematic diagram of the three-dimensional structure of a calibration device for an engine leak detection system provided by an embodiment of the present invention at different viewing angles, such as Figure 1 to Figure 2 As shown, the calibration equipment of the engine leak detection system includes at least one simulated cylinder module 1 for containing test gas; at least one set of simulated interface modules 2 correspondingly connected to at least one simulated cylinder module 1; and at least one standard leakage port module 3 correspondingly connected to at least one simulated cylinder module 1.

[0045] Among them, the simulated cylinder module 1 can be specifically understood as a device that simulates the internal structure and environment of the engine cylinder, and is used to contain test gas for calibration and testing of the engine leak detection system. The simulation interface module 2 is connected to the gas containing space of the simulated cylinder module 1, so that the test gas can enter the simulated cylinder module 1 through the simulation interface module 2. The standard leakage port module 3 is connected to the gas containing space of the simulated cylinder module 1, so that the test gas in the simulated cylinder module 1 can leak through the standard leakage port module 3, and the standard leakage port module 3 can control the leakage rate of the test gas in the simulated cylinder module 1, so that the test gas in the simulated cylinder module 1 can leak at leakage rates of different standards.

[0046] It can be understood that the calibration device of the engine leak detection system in the embodiment of the present invention includes at least one simulated cylinder module 1, that is, it can include one or more simulated cylinder modules 1, and can be designed according to actual needs. In an exemplary embodiment, the calibration device of the engine leak detection system may include three simulated cylinder modules 1, and the three simulated cylinder modules 1 can be respectively a simulated cylinder module for simulating an oil channel, a simulated cylinder module for simulating a water channel, and a simulated cylinder module for simulating a fuel channel.

[0047] Correspondingly, at least one group of simulation interface modules 2 and at least one standard air leakage port module 3 are each set corresponding to at least one simulation cylinder module 1. At this time, the number of groups of simulation interface modules 2 and the number of standard air leakage port modules 3 can be the same as or different from the number of simulation cylinder modules 1, and can be specifically designed according to actual needs. When the number of groups of simulation interface modules 2 and the number of standard air leakage port modules 3 are the same as the number of simulation cylinder modules 1, at least one group of simulation interface modules 2 includes a simulation cylinder module for simulating the engine oil channel, a simulation cylinder module for simulating the water channel, and a simulation cylinder module for simulating the fuel channel, then the calibration device of the engine leak detection system may include three groups of simulation interface modules 2, and the three groups of simulation interface modules 2 are respectively a simulation interface module group for the engine oil channel, a simulation interface module group for the water channel, and a simulation interface module group for the fuel channel. At this time, the simulation interface module group for the engine oil channel is connected to the gas containing space of the simulation cylinder module for the engine oil channel, and the simulation interface module group for the water channel is connected to the gas containing space of the simulation cylinder module for the engine oil channel. The port module group is connected to the gas containing space of the simulated cylinder module of the water channel, and the fuel channel simulation interface module group is connected to the gas containing space of the simulated cylinder module of the simulated fuel channel; similarly, at least one standard air leakage port module 3 may include a standard air leakage port module of the engine oil channel, a standard air leakage port module of the water channel, and a standard air leakage port module of the fuel channel. At this time, the standard air leakage port module of the engine oil channel is connected to the gas containing space of the simulated cylinder module of the engine oil channel, the standard air leakage port module of the water channel is connected to the gas containing space of the simulated cylinder module of the water channel, and the standard air leakage port module of the fuel is connected to the gas containing space of the simulated cylinder module of the simulated fuel channel.

[0048] In addition, each simulation interface module group may include at least one simulation interface module 2, that is, each simulation interface module group may include one or more simulation interface modules 2, and the embodiment of the present invention does not specifically limit this, and the shape, size and number of the simulation interface modules 2 may be set according to the model of the engine to be simulated. In an exemplary embodiment, when the calibration equipment of the engine leak detection system simulates engines of 4-cylinder 1013 model, 6-cylinder 1013 model, 4-cylinder DK model, 6-cylinder DK model, 4-cylinder DH model, 6-cylinder DK model, 4-cylinder 2012 model, 6-cylinder 2012 model and other models, each simulation interface module group should at least be able to correspond to the interfaces of the engines of 4-cylinder 1013 model, 6-cylinder 1013 model, 4-cylinder DK model, 6-cylinder DK model, 4-cylinder DH model, 6-cylinder DK model, 4-cylinder 2012 model, 6-cylinder 2012 model and other models.

[0049] It can also be understood that, since the spatial capacity of engines of different models is different, the gas capacity of each simulated cylinder module 1 can be controlled, that is, the gas capacity of the simulated cylinder module 1 can be varied within a certain range, so that each simulated cylinder module 1 can simulate the cylinders of different models and meet the calibration requirements of engine leak detection systems of different models. At the same time, it can also meet the calibration requirements of each engine leak detection system for engines of different models, thereby eliminating the need to set up different calibration equipment for engine leak detection systems for engines of different models, thus meeting the flexibility requirements of the engine leak detection system, and helping to reduce calibration costs, simplify calibration operations, and improve calibration efficiency.

[0050] Continue to refer Figure 1 to Figure 2 As shown, the engine leak detection system also includes an input module 4 for obtaining test instructions; a control module 5 for controlling the gas capacity of each simulated cylinder module 1 and the switch state of each standard leakage port module 3 according to the test instructions, so as to calibrate the engine leak detection system to be calibrated.

[0051] Among them, the input module 4 can obtain the test instructions for adjusting the gas capacity of the simulated cylinder module 1 and the test instructions for controlling the switch state of the standard air leakage port module 3 through the human-computer interaction interface or button components. When the input module 4 obtains the test instructions through the human-computer interaction interface, the operator can input the required test instructions according to the controls displayed in the human-computer interaction page. For example, the test instructions may include the test instructions for capacity setting and the test instructions for calibration process setting, etc. The operator can input the corresponding test instructions for capacity setting through the input module 4 according to the model of the engine to be simulated; the operator can also input the corresponding test instructions for calibration process setting through the input module 4 according to the defects of the engine to be simulated. For example, when the engine to be simulated does not have defects, the user can input the test instructions for qualified process setting through the input module, and when the engine to be simulated has defects such as cracks and sand holes, the user can input the test instructions for unqualified process setting through the input module.

[0052] The control module 5 includes a programmable logic controller (PLC), which is responsible for receiving and parsing test instructions from the input module 4, and accurately controlling the gas capacity of each simulated cylinder module 1 according to these test instructions, simulating the gas capacity of the cylinder modules inside the engines of different models to be simulated. For example, when the model to be simulated is the engine oil channel, the control module 5 will control the gas capacity of the simulated cylinder module 1 to adjust it to the gas capacity of the simulated cylinder module of the simulated oil channel; when the model to be simulated is the engine water channel, the control module 5 will control the gas capacity of the simulated cylinder module 1 to adjust it to the gas capacity of the simulated cylinder module of the simulated water channel; when the model to be simulated is the engine fuel channel, the control module 5 will control the gas capacity of the simulated cylinder module 1 to adjust it to the gas capacity of the simulated cylinder module of the simulated fuel channel. At the same time, the control module 5 controls the switching state of each standard air leakage port module 3 according to the test instruction, so that the test gas in the simulated cylinder module 1 can leak through the standard air leakage port module 3 according to the test instruction. For example, when the test instruction is a test instruction set for a qualified process, the control module 5 will control the standard air leakage port module 3 to leak the test gas in the simulated cylinder module 1 according to the leakage rate of the qualified process; when the test instruction is a test instruction set for an unqualified process, the control module 5 will control the standard air leakage port module 3 to leak the test gas in the simulated cylinder module 1 according to the leakage rate of the unqualified process, thereby ensuring the accuracy and reliability of the calibration process.

[0053] In the embodiment of the present invention, a simulated cylinder module 1, a simulated interface module 2, a standard leakage port module 3, an input module 4 and a control module 5 are set, so that the control module 5 obtains the test instruction through the input module 4, and controls the gas capacity of the simulated cylinder module 1 according to the test instruction, thereby realizing the rapid switching of the gas capacity and meeting the calibration requirements of the engine leak detection system for detecting engines of different models; at the same time, the control module 5 can also control the switching state of each standard leakage port module 3 according to the test instruction, so as to control the test gas in the simulated cylinder module to leak according to different standards, thereby realizing multi-standard calibration of the engine leak detection system, ensuring the accuracy of calibration and the reliability of the system, effectively improving the calibration efficiency and reducing the calibration cost.

[0054] Optional, Figure 3 FIG. 1 is a schematic cross-sectional view of a calibration device for an engine leak detection system provided by an embodiment of the present invention. Figure 3As shown, the standard air leakage port module 3 includes a standard air leakage port 301 and a leakage solenoid valve 302 arranged at the standard air leakage port 301; the control module 5 is used to control the leakage solenoid valve 302 to open when the test instruction includes a test instruction for setting an unqualified process, so that the standard air leakage port 301 releases the test gas in the simulated cylinder module 1 at a preset leakage rate.

[0055] Specifically, the control module 5 can send a corresponding control signal to the leakage solenoid valve 302 according to the test instruction it receives, and when the test instruction received by the control module 5 includes a test instruction for setting an unqualified process, the control module 5 can send a control signal to the leakage solenoid valve 302 to control the leakage solenoid valve 302 to open, so that the leakage solenoid valve 302 can be opened normally, and the gas containing space of the simulated cylinder module 1 can be connected to the external environment through the standard leakage port 301, and the test gas in the simulated cylinder module 1 can be released through the standard leakage port 301 at a preset leakage rate. At this time, the calibration equipment of the engine leak detection system can simulate a defective engine, so that the calibration equipment of the engine leak detection system can calibrate the process of the engine leak detection system when leaking a defective engine, which helps to improve the performance, accuracy and safety of the leak detection system, and ensure that the leak detection system can reliably detect and identify leakage problems in the engine in actual applications.

[0056] Exemplarily, when the calibration device of the engine leak detection system includes three standard air leakage ports 301, the calibration device of the engine leak detection system may be provided with three standard air leakage ports 301, respectively, a standard air leakage port for an engine oil channel, a standard air leakage port for a water channel, and a standard air leakage port for a fuel channel. The test gas in the simulated cylinder module simulating the engine oil channel may be released at a preset leakage rate through the standard air leakage port for the engine oil channel, the test gas in the simulated cylinder module simulating the water channel may be released at a preset leakage rate through the standard air leakage port for the water channel, and the test gas in the simulated cylinder module simulating the fuel channel may be released at a preset leakage rate through the standard air leakage port for the fuel channel. For example, when the test instruction includes a test instruction for simulating an unqualified process setting of an engine water channel, the control module 5 may send a signal to control the leakage solenoid valve 302 provided at the standard air leakage port for the water channel. 02 turns on the control signal, so that the test gas in the simulated cylinder module of the simulated water channel can be released through the standard leakage port of the water channel within the unqualified leakage rate range of the water channel. At this time, the engine leak detection system can set a preset time for the leakage rate test, and the preset time can be, for example, 10 seconds, so that the engine leak detection system can determine the average leakage rate within the preset time as the measured water channel leakage rate. Subsequently, the water channel leakage rate measured by the engine leak detection system can be compared with the unqualified leakage rate range of the water channel. If the water channel leakage rate measured by the engine leak detection system is within the unqualified leakage rate range of the water channel, it can be determined that the test structure of the engine leak detection system is accurate; conversely, if the water channel leakage rate measured by the engine leak detection system is not within the unqualified leakage rate range of the water channel, it can be determined that the test structure of the engine leak detection system is inaccurate, and the engine leak detection system needs further maintenance.

[0057] Similarly, when the test instruction includes a test instruction for simulating an unqualified process setting of an engine oil channel, the control module 5 can send a control signal to the leakage solenoid valve 302 set at the standard leakage port of the oil channel to control the opening of the leakage solenoid valve 302, so that the test gas in the simulated cylinder module of the simulated oil channel can be released through the standard leakage port of the oil channel within the unqualified leakage rate range of the oil channel. At this time, the engine leak detection system can also test the leakage rate, so as to determine whether the engine leak detection system's leakage rate test of the test gas in the simulated cylinder module of the simulated oil channel is accurate based on the leakage rate measured by the engine leak detection system. When the test instruction includes a test instruction for simulating an unqualified process setting of an engine fuel channel, the control module 5 can send a control signal to the leakage solenoid valve 302 set at the standard leakage port of the fuel channel to control the opening of the leakage solenoid valve 302, so that the test gas in the simulated cylinder module of the simulated fuel channel can be released through the standard leakage port of the fuel channel within the unqualified leakage rate range of the fuel channel. At this time, the engine leak detection system can also test the leakage rate, so as to determine whether the leakage rate test of the test gas in the simulated cylinder module of the simulated fuel channel by the engine leak detection system is accurate based on the leakage rate measured by the engine leak detection system.

[0058] Optional, continue to refer to Figure 3 The control module 5 is also used to control the leakage solenoid valve 302 to close when the test instruction includes a test instruction of a qualified process setting, so as to prevent the test gas in the simulated cylinder module 1 from being released from the standard leakage port 301.

[0059] Specifically, the control module 5 can send a corresponding control signal to the leakage solenoid valve 302 according to the test instruction it receives, and when the test instruction received by the control module 5 includes a test instruction for setting a qualified process, the control module 5 can send a control signal to the leakage solenoid valve 302 to control the leakage solenoid valve 302 to close, so that the leakage solenoid valve 302 can be closed normally, preventing the gas containing space of the simulated cylinder module 1 from being connected to the external environment. At this time, the calibration equipment of the engine leak detection system can simulate an engine in a qualified state. This operation ensures that the calibration equipment of the engine leak detection system can calibrate the process of the engine leak detection system testing a qualified engine, and the test gas will not leak accidentally during the process, maintaining the stable state of the calibration equipment, thereby maintaining the accuracy and reliability of the calibration of the engine leak detection system.

[0060] For example, when the test instruction includes a test instruction for simulating the qualified process setting of the engine water channel, the control module 5 can send a control signal to the leakage solenoid valve 302 set at the standard leakage port of the water channel to control the leakage solenoid valve 302 to close, so that the test gas in the simulated cylinder module simulating the water channel cannot leak through the standard leakage port of the water channel or is released at a smaller leakage rate; when the test instruction includes a test instruction for simulating the qualified process setting of the engine oil channel, the control module 5 can send a control signal to the leakage solenoid valve 302 set at the standard leakage port of the oil channel to control the leakage solenoid valve 302 to close. The control signal for closing the leakage solenoid valve 302 prevents the test gas in the simulated cylinder module of the simulated engine oil channel from leaking through the standard leakage port of the engine oil channel or releases it at a smaller leakage rate; when the test instruction includes a test instruction for setting a qualified process for simulating the engine fuel channel, the control module 5 can send a control signal to the leakage solenoid valve 302 set at the standard leakage port of the fuel channel to control the leakage solenoid valve 302 to be closed, so that the test gas in the simulated cylinder module of the simulated fuel channel cannot leak through the standard leakage port of the fuel channel or releases it at a smaller leakage rate. In this way, the engine leak detection system tests the leakage rate of the test gas in the simulated cylinder module of the simulated water channel, the simulated cylinder module of the simulated oil channel, and the simulated cylinder module of the simulated fuel channel, respectively, and determines whether the leakage rate measured by the engine leak detection system is within the qualified leakage rate range of each simulated cylinder module. When the leakage rate measured by the engine leak detection system is within the qualified leakage rate range of each simulated cylinder module, it can be determined that the detection structure of the engine leak detection system is accurate. On the contrary, if the leakage rate measured by the engine leak detection system is not within the qualified leakage rate range of each simulated cylinder module, it can be determined that the leakage rate measured by the engine leak detection system is inaccurate, and the engine leak detection system needs to be further repaired.

[0061] Optional, continue to refer to Figure 3 The simulated cylinder module 1 includes multiple cylinder units 101 and cylinder solenoid valves 102 respectively arranged on each cylinder unit 101; the control module 5 is used to control the opening or closing of the cylinder solenoid valve 102 according to the test instruction of the capacity setting when the test instruction includes a test instruction of the capacity setting, so as to control the gas capacity of the simulated cylinder module 1.

[0062] Among them, the simulated cylinder module 1 may include a plurality of independent cylinder units 101, each cylinder unit 101 is provided with a corresponding cylinder solenoid valve 102, and the connection state between the cylinder unit 101 and other cylinder units can be controlled by controlling the opening or closing of the cylinder solenoid valve 102, for example, by controlling the cylinder solenoid valves 102 on several cylinder units 101 to be opened at the same time, the cylinder units 101 with the cylinder solenoid valves 102 opened can be connected to each other, so that the gas capacity of the current simulated cylinder module 1 is the sum of the gas capacities of the cylinder units 101 with the cylinder solenoid valves 102 opened. In this way, by controlling the opening or closing of the cylinder solenoid valves 102 provided on each cylinder unit 101, the gas capacity in the simulated cylinder module 1 can be set accordingly, so that the simulated cylinder module 1 can simulate the cylinders of engines of different models, so that the calibration equipment of the engine leak detection system can accurately calibrate the engine leak detection systems of different models or different working conditions of the engine leak detection system, thereby improving the accuracy and reliability of the engine leak detection system.

[0063] In an exemplary embodiment, when the model to be simulated is the engine oil channel, the control module 5 will control the opening or closing of the cylinder solenoid valve 102, so that the sum of the gas capacities of the cylinder units 101 of the simulated cylinder module 1 is adjusted to the gas capacity of the simulated cylinder module of the simulated oil channel; when the model to be simulated is the engine water channel, the control module 5 will control the opening or closing of the cylinder solenoid valve 102, so that the sum of the gas capacities of the cylinder units 101 of the simulated cylinder module 1 is adjusted to the gas capacity of the simulated cylinder module of the simulated water channel; when the model to be simulated is the engine fuel channel, the control module 5 will control the opening or closing of the cylinder solenoid valve 102, so that the gas capacity of the simulated cylinder module 1 is adjusted to the gas capacity of the simulated cylinder module of the simulated fuel channel.

[0064] Optional, continue to refer to Figure 3 The simulated cylinder module 1 may include a first simulated cylinder module; the first simulated cylinder module includes N cylinder units 101, each cylinder unit has a different gas capacity, and N is a positive integer greater than 1.

[0065] Among them, the first simulated cylinder module can be specifically understood as a cylinder module with variable gas capacity, which is used to simulate the cylinder working state of engines with different gas capacities. Specifically, the first simulated cylinder module includes N independent cylinder units 101, wherein the gas capacity of each cylinder unit 101 is different, and each cylinder unit 101 is provided with a corresponding cylinder solenoid valve 102. By controlling the opening or closing of the cylinder solenoid valve 102, the connection state between different cylinder units 101 can be controlled. For example, by controlling the cylinder solenoid valves 102 on several cylinder units 101 to open at the same time, the cylinder units 101 with the cylinder solenoid valves 102 opened can be connected to each other, so that the gas capacity of the current first simulated cylinder module is the sum of the gas capacities of the cylinder units 101 with the cylinder solenoid valves 102 opened. In this way, by controlling the opening or closing of the cylinder solenoid valve 102 set on each cylinder unit 101, the gas capacity of the first simulated cylinder module can be set accordingly, so that the first simulated cylinder module can simulate the cylinders of engines of different models, so that the calibration equipment of the engine leak detection system can accurately calibrate different types of engine leak detection systems or different working conditions of the engine leak detection system, thereby improving the working accuracy and reliability of the engine leak detection system.

[0066] Exemplarily, when the first simulated cylinder module is a simulated cylinder module for simulating the engine oil channel, N can be equal to 8. At this time, the simulated engine oil channel cylinder module is configured with 8 cylinder units 101, and the gas passages of each cylinder unit 101 can be 1L, 2L, 4L, 8L, 16L, 32L, 64L and 72L respectively. By controlling the opening or closing of the cylinder solenoid valve 102 on each cylinder unit 101, the cylinder units 101 with different gas capacities are interconnected, so that the gas capacity of the simulated engine oil channel cylinder module can be switched between 1L-199L, and the switching accuracy is 1L.

[0067] In another exemplary embodiment, when the first simulated cylinder module is a simulated cylinder module for simulating a water channel, N may be equal to 5. In this case, the simulated engine oil channel cylinder module is configured with 5 cylinder units 101, and the gas passages of each cylinder unit 101 may be 1L, 2L, 4L, 8L and 16L respectively. By controlling the opening or closing of the cylinder solenoid valve 102 on each cylinder unit 101, the cylinder units 101 with different gas capacities are interconnected, so that the gas capacity of the simulated engine oil channel cylinder module can be changed between 1L-31L, and the switching accuracy is 1L.

[0068] In an optional embodiment, the simulated cylinder module 1 may further include a second simulated cylinder module, and the first simulated cylinder module may include a cylinder unit 101. Exemplarily, the second simulated cylinder module may be a simulated cylinder module for simulating a fuel path, and the simulated cylinder module for simulating a fuel path may include a cylinder unit 101, and the gas capacity of the cylinder unit 101 may be 1.2L, so that the gas capacity of the simulated cylinder module for simulating a fuel path may be a fixed gas capacity.

[0069] Optional, Figures 4 to 8 is a schematic diagram of a planar structure of a calibration device for a transmitter leakage detection system provided by an embodiment of the present invention at different viewing angles, such as Figures 4 to 8 As shown, the input module 4 may include a button component 401 and a control panel 402; the control module 5 is connected to the button component 401 and the control panel 402 respectively; the button component 401 is used to obtain test instructions; the control panel 402 is used to obtain test instructions and display the calibration process and calibration results; the control module 5 is also used to control the control panel 402 to display according to the test instructions.

[0070] Among them, the button component 401 may include a rotary button and / or a key button. Specifically, the operator can generate a test instruction for adjusting the gas capacity of the simulated cylinder module 1 by operating the rotary button, and transmit it to the control module 5. For example, when the operator rotates the rotary button by one gear, a test instruction for adjusting the gas capacity of the simulated cylinder module 1 to the gas capacity of the simulated cylinder module of the simulated water channel is generated; when the operator rotates the rotary button by two gears, a test instruction for adjusting the gas capacity of the simulated cylinder module 1 to the gas capacity of the simulated cylinder module of the simulated oil channel is generated; when the operator rotates the rotary button by three gears, a test instruction for adjusting the gas capacity of the simulated cylinder module 1 to the gas capacity of the simulated cylinder module of the simulated fuel channel is generated. At the same time, the operator can generate a test instruction for controlling the switch state of the standard air leakage port module 3 by pressing the key button, and transmit it to the control module 5. For example, when the operator presses the qualified process setting button, a test instruction is generated to control the standard leakage port module 3 to leak the test gas in the simulated cylinder module 1 according to the leakage rate of the qualified process; when the operator presses the unqualified process setting button, a test instruction is generated to control the standard leakage port module 3 to leak the test gas in the simulated cylinder module 1 according to the leakage rate of the unqualified process.

[0071] The control panel 402 includes components such as a display screen and an indicator light. Specifically, the display screen can be a touch screen, and the display screen can display corresponding touch controls for the operator to operate, that is, the operator can touch the corresponding touch controls to generate corresponding test instructions. When the control module receives the test instruction, it can control the display screen to display the corresponding picture; the indicator light can display the test start, stop and other processes, so that the operator can know the current test process in time. In an exemplary embodiment, the display screen and the indicator light can also display the calibration process and calibration results of the engine leak detection system. For example, the display screen can display the calibration curve of the engine leak detection system during the calibration process and the calibration results of the qualified process or the unqualified process. When the calibration result of the engine leak detection system is a qualified process, the indicator light is green, and when the calibration result of the engine leak detection system is an unqualified process, the indicator light is red. In this way, by setting the connection between the button component 401 and the control panel 402 and the control module 5 in the input module 4, the operator can send corresponding test instructions to the control module 5 through the button component 401 and the control panel 402 to control the calibration process of the engine leak detection system. At the same time, the operator can obtain the calibration process and calibration results through the control panel 402, can intuitively understand the calibration status of the engine leak detection system, and perform necessary operations and judgments to ensure the accuracy and operability of the calibration process, thereby improving the intuitiveness and accuracy of the calibration.

[0072] In an optional embodiment, the button assembly 401 and the control panel 402 may be an integrated structure, that is, the button assembly 401 and the control panel 402 are on the same housing.

[0073] In another exemplary embodiment, for example, the control panel 402 can input the test instructions of the qualified process settings or unqualified process settings of the calibration equipment of the engine leak detection system for the 4-cylinder 1013 model, the 6-cylinder 1013 model, the 4-cylinder DK model, the 6-cylinder DK model, the 4-cylinder DH model, the 6-cylinder DK model, the 4-cylinder 2012 model, the 6-cylinder 2012 model, etc. by touch mode. After the control module 5 receives and parses the test instruction, it controls the simulated cylinder module 1 to be connected to the corresponding simulated interface module 2 corresponding to the simulated 4-cylinder 1013 model. The interface of the engine of models such as 6-cylinder 1013 models, 4-cylinder DK models, 6-cylinder DK models, 4-cylinder DH models, 6-cylinder DK models, 4-cylinder 2012 models, and 6-cylinder 2012 models is controlled, and the standard air leakage port module 3 is controlled to leak the test gas in the simulated cylinder module 1 according to the leakage rate of the corresponding qualified process or unqualified process of the simulated 4-cylinder 1013 models, 6-cylinder 1013 models, 4-cylinder DK models, 6-cylinder DK models, 4-cylinder DH models, 6-cylinder DK models, 4-cylinder 2012 models, and 6-cylinder 2012 models.

[0074] Optional, continue to refer to Figures 4 to 8 The calibration device of the engine leak detection system also includes a fuselage 6, and the simulated cylinder module 1 is accommodated in the fuselage 6; the control panel 402 and the button assembly 401 are both rotatably connected to the fuselage 6.

[0075] Among them, the fuselage 6 can be specifically understood as a structure that accommodates and supports other modules. Specifically, the fuselage 6 can be a box-type structure assembled from metal materials such as aluminum profiles, and the simulated cylinder module 1 is installed inside the fuselage 6, so that the fuselage 6 can protect and fix the simulated cylinder module 1; the control panel 402 and the button assembly 401 are rotatably connected to the fuselage 6, and the fuselage 6 enables the control panel 402 and the button assembly 401 and other components to be supported. At the same time, the control panel 402 and the button assembly 401 are rotatably connected to the fuselage 6 through a rotating shaft, and the operator can rotate the position of the control panel 402 and the button assembly 401 as needed without moving the position of the fuselage 6, thereby improving the operating convenience and speed of the calibration equipment of the engine leak detection system.

[0076] Optional, continue to refer to Figures 4 to 8 As shown, the calibration equipment of the engine leak detection system has a running wheel assembly 7 installed on the fuselage 6.

[0077] Among them, the running wheel assembly 7 is composed of a group of rollers, which can roll under force, thereby driving the fuselage 6 and the input module 4 arranged on the fuselage 6 to move, so that the calibration equipment of the entire engine leak detection system can be flexibly moved and positioned in the working area. The operator can control the movement of the running wheel assembly 7 to move the calibration equipment to the position of the engine leak detection system that needs to be calibrated, so as to perform accurate detection and calibration operations.

[0078] Based on the same inventive concept, an embodiment of the present invention further provides a calibration method for an engine leak detection system, which is executed by using a control module in the calibration device for the engine leak detection system of the above embodiment. Fig. 9 A flow chart of a calibration method for an engine leak detection system provided by an embodiment of the present invention is as follows: Fig. 9 As shown, the calibration method of the engine leak detection system includes:

[0079] S101. Acquire a test instruction for capacity setting based on an input module.

[0080] Specifically, the input module can obtain a test instruction for adjusting the gas capacity of the simulated cylinder module through a human-computer interaction interface or a button component, etc. When the input module obtains the test instruction through the human-computer interaction interface, the operator can input the required test instruction according to the control displayed in the human-computer interaction page. Exemplarily, the test instruction may include a test instruction for capacity setting, and the operator can input the corresponding test instruction for capacity setting through the input module according to the model of the engine to be simulated. For example, when the model of the engine to be simulated is the engine oil channel, the input module inputs a test instruction for adjusting the gas capacity of the simulated cylinder module to the gas capacity of the simulated cylinder module of the simulated oil channel, when the model of the engine to be simulated is the engine water channel, the input module inputs a test instruction for adjusting the gas capacity of the simulated cylinder module to the gas capacity of the simulated cylinder module of the simulated water channel, and when the model of the engine to be simulated is the engine fuel channel, the input module inputs a test instruction for adjusting the gas capacity of the simulated cylinder module to the gas capacity of the simulated cylinder module of the simulated fuel channel.

[0081] S102, controlling the gas capacity of the simulated cylinder module according to the test instruction of the capacity setting.

[0082] Specifically, the simulated cylinder module may include multiple independent cylinder units, each cylinder unit is provided with a corresponding cylinder solenoid valve, and the control module controls the opening or closing of the cylinder solenoid valve according to the test instruction of the capacity setting, and can control the connection state between the cylinder unit and other cylinder units. For example, by controlling the cylinder solenoid valves on several cylinder units to open at the same time, the cylinder units with the cylinder solenoid valves opened can be connected to each other, so that the gas capacity of the current simulated cylinder module is the sum of the gas capacities of the cylinder units with the cylinder solenoid valves opened. In this way, by controlling the opening or closing of the cylinder solenoid valves provided on each cylinder unit, the gas capacity in the simulated cylinder module can be set accordingly, so that the simulated cylinder module can simulate the cylinders of engines of different models, so that the calibration equipment of the engine leak detection system can accurately calibrate the engine leak detection systems of different models or different working conditions of the engine leak detection system.

[0083] In an exemplary embodiment, when the model to be simulated is the engine oil channel, the control module will control the opening or closing of the cylinder solenoid valve so that the sum of the gas capacities of the cylinder units of the simulated cylinder module is adjusted to the gas capacity of the simulated cylinder module of the simulated oil channel. When the model to be simulated is the engine water channel, the control module will control the opening or closing of the cylinder solenoid valve so that the sum of the gas capacities of the cylinder units of the simulated cylinder module is adjusted to the gas capacity of the simulated cylinder module of the simulated water channel. When the model to be simulated is the engine fuel channel, the control module will control the opening or closing of the cylinder solenoid valve so that the gas capacity of the simulated cylinder module is adjusted to the gas capacity of the simulated cylinder module of the simulated fuel channel.

[0084] S103: After the analog interface module is connected to the engine leak detection system to be calibrated, a test instruction set in the calibration process is obtained.

[0085] Specifically, after connecting the simulation interface module and the engine leak detection system to be calibrated, the input module can obtain the test instruction for controlling the switch state of the standard air leak port module through the human-computer interaction interface or button assembly, etc. When the input module obtains the test instruction through the human-computer interaction interface, the operator can input the required test instruction according to the control displayed in the human-computer interaction page. For example, the test instruction can include the test instruction for calibration process setting, etc. The operator can input the corresponding test instruction for calibration process setting through the input module according to the defects of the engine to be simulated. For example, when the engine to be simulated does not have defects, the user can input the corresponding test instruction for qualified process setting through the input module, and when the engine to be simulated has defects such as cracks and sand holes, the user can input the corresponding test instruction for unqualified process setting through the input module.

[0086] S104. After the test gas is filled into the simulated cylinder module to a set state, the switch state of the standard leak port module is controlled according to the test instructions set in the calibration process, so that the test gas in the simulated cylinder module leaks within the leakage rate calibration range, and the engine leak detection system to be calibrated is calibrated.

[0087] Specifically, after the simulated cylinder module is filled with test gas and reaches the set state, the control module will control the switching state of each standard air leakage port module according to the test instruction, so that the test gas in the simulated cylinder module can leak through the standard air leakage port module according to the test instruction. For example, when the test instruction is a test instruction set for a qualified process, the control module will control the standard air leakage port to leak the test gas in the simulated cylinder module according to the leakage rate of the qualified process; when the test instruction is a test instruction set for an unqualified process, the control module will control the standard air leakage port to leak the test gas in the simulated cylinder module according to the leakage rate of the unqualified process.

[0088] Optionally, when the test instructions set in the calibration process include test instructions set in the qualified process, the standard air leakage port module is controlled to be in a closed state so that the test gas in the simulated cylinder module leaks within the qualified leakage rate calibration range, thereby calibrating the qualified part test process of the engine leak detection system to be calibrated.

[0089] Specifically, the control module can send a corresponding control signal to the leakage solenoid valve according to the test instructions it receives, and when the test instructions received by the control module include test instructions for qualified process settings, the control module can send a control signal to the leakage solenoid valve to control the leakage solenoid valve to close, so that the leakage solenoid valve can be closed normally, preventing the gas containing space of the simulated cylinder module from being connected to the external environment. At this time, the calibration equipment of the engine leak detection system can simulate an engine in a qualified state.

[0090] Exemplarily, when the test instruction includes a test instruction for simulating a qualified process setting of an engine water channel, the control module may send a control signal to control the closing of the leakage solenoid valve arranged at the standard leakage port of the water channel, so that the test gas in the simulated cylinder module simulating the water channel cannot leak through the standard leakage port of the water channel or is released at a smaller leakage rate; when the test instruction includes a test instruction for simulating a qualified process setting of an engine oil channel, the control module may send a control signal to control the closing of the leakage solenoid valve arranged at the standard leakage port of the oil channel, so that the test gas in the simulated cylinder module simulating the oil channel cannot leak through the standard leakage port of the oil channel or is released at a smaller leakage rate; when the test instruction includes a test instruction for simulating a qualified process setting of an engine fuel channel, the control module may send a control signal to control the closing of the leakage solenoid valve arranged at the standard leakage port of the fuel channel, so that the test gas in the simulated cylinder module simulating the fuel channel cannot leak through the standard leakage port of the fuel channel or is released at a smaller leakage rate. In this way, the engine leak detection system tests the leakage rate of the test gas in the simulated cylinder module of the simulated water channel, the simulated cylinder module of the simulated oil channel, and the simulated cylinder module of the simulated fuel channel, respectively, and determines whether the leakage rate measured by the engine leak detection system is within the qualified leakage rate range of each simulated cylinder module. When the leakage rate measured by the engine leak detection system is within the qualified leakage rate range of each simulated cylinder module, it can be determined that the detection structure of the engine leak detection system is accurate. On the contrary, if the leakage rate measured by the engine leak detection system is not within the qualified leakage rate range of each simulated cylinder module, it can be determined that the leakage rate measured by the engine leak detection system is inaccurate, and the engine leak detection system needs to be further repaired.

[0091] Optionally, when the test instructions set in the calibration process include test instructions set in the unqualified process, the standard air leakage port module is controlled to be in an open state so that the test gas in the simulated cylinder module leaks within the unqualified leakage rate calibration range, thereby calibrating the unqualified part test process of the engine leak detection system to be calibrated.

[0092] Specifically, the control module can send a corresponding control signal to the leakage solenoid valve according to the test instructions it receives, and when the test instructions received by the control module include test instructions for unqualified process settings, the control module can send a control signal to the leakage solenoid valve to control the opening of the leakage solenoid valve, so that the leakage solenoid valve can be opened normally, and the gas containing space of the simulated cylinder module can be connected to the external environment through the standard leakage port, and the test gas in the simulated cylinder module can be released through the standard leakage port at a preset leakage rate. At this time, the calibration equipment of the engine leak detection system can simulate a defective engine, so that the calibration equipment of the engine leak detection system can calibrate the process of the engine leak detection system performing leak detection on a defective engine.

[0093] Exemplarily, when the test instruction includes a test instruction for simulating an unqualified process setting of an engine water channel, the control module can send a control signal to control the opening of the leakage solenoid valve set at the standard leakage port of the water channel, so that the test gas in the simulated cylinder module of the simulated water channel can be released through the standard leakage port of the water channel at an unqualified leakage rate range of the water channel. At this time, the engine leak detection system can set a preset time for the leakage rate test, and the preset time can be, for example, 10 seconds, so that the engine leak detection system can determine the average leakage rate within the preset time as the measured water channel leakage rate. Subsequently, the water channel leakage rate measured by the engine leak detection system can be compared with the unqualified leakage rate range of the water channel. If the water channel leakage rate measured by the engine leak detection system is within the unqualified leakage rate range of the water channel, it can be determined that the test structure of the engine leak detection system is accurate; conversely, if the water channel leakage rate measured by the engine leak detection system is not within the unqualified leakage rate range of the water channel, it can be determined that the test structure of the engine leak detection system is inaccurate, and the engine leak detection system needs to be further repaired.

[0094] Similarly, when the test instruction includes a test instruction for simulating an unqualified process setting of an engine oil channel, the control module can send a control signal to the leakage solenoid valve set at the standard leakage port of the oil channel to control the opening of the leakage solenoid valve, so that the test gas in the simulated cylinder module of the simulated oil channel can be released through the standard leakage port of the oil channel within the unqualified leakage rate range of the oil channel. At this time, the engine leak detection system can also test the leakage rate, so as to determine whether the engine leak detection system's leakage rate test of the test gas in the simulated cylinder module of the simulated oil channel is accurate based on the leakage rate measured by the engine leak detection system. When the test instruction includes a test instruction for setting an unqualified process of simulating an engine fuel channel, the control module can send a control signal to the leakage solenoid valve set at the standard leakage port of the fuel channel to control the opening of the leakage solenoid valve, so that the test gas in the simulated cylinder module of the simulated fuel channel can be released through the standard leakage port of the fuel channel within the unqualified leakage rate range of the fuel channel. At this time, the engine leak detection system can also test the leakage rate, so as to determine whether the engine leak detection system's leakage rate test of the test gas in the simulated cylinder module of the simulated fuel channel is accurate based on the leakage rate measured by the engine leak detection system.

[0095] The technical solution provided by the present invention is that the control module controls the gas capacity of the simulated cylinder module based on the test instructions of the capacity setting obtained by the input module, realizes the rapid switching of the gas capacity, and meets the calibration requirements of the engine leak detection system for detecting engines of different models. After the simulation interface module is connected with the engine leak detection system to be calibrated, the control module obtains the test instructions set in the calibration process, and after the test gas is filled into the simulated cylinder module to the set state, the switch state of the standard leak port module is controlled according to the test instructions set in the calibration process, so that the test gas in the simulated cylinder module leaks within the leakage rate calibration range, and the engine leak detection system to be calibrated is calibrated, realizing the multi-standard calibration of the engine leak detection system, ensuring the accuracy of the calibration and the reliability of the system, effectively improving the calibration efficiency, and reducing the calibration cost.

[0096] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0097] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A calibration device for an engine leak detection system, characterized in that: include: at least one simulated cylinder module for containing a test gas; At least one group of simulation interface modules correspondingly connected to at least one of the simulation cylinder modules; At least one standard air leakage port module connected corresponding to at least one of the simulated cylinder modules; Input module, used to obtain test instructions; The control module is used to control the gas capacity of each of the simulated cylinder modules and the switch state of each of the standard air leakage port modules according to the test instruction, so as to calibrate the engine leak detection system to be calibrated.

2. The calibration device for the engine leak detection system according to claim 1, characterized in that: The standard air leakage port module comprises a standard air leakage port and an air leakage solenoid valve arranged at the standard air leakage port; The control module is used for controlling the air leakage solenoid valve to open when the test instruction includes a test instruction for unqualified process setting, so that the standard air leakage port releases the test gas in the simulated cylinder module at a preset leakage rate.

3. The calibration device for the engine leak detection system according to claim 2, characterized in that: The control module is further configured to control the gas leakage solenoid valve to close when the test instruction includes a test instruction for a qualified process setting, so as to prevent the test gas in the simulated cylinder module from being released from the standard gas leakage port.

4. The calibration device for an engine leak detection system according to claim 1, characterized in that: The simulated cylinder module includes a plurality of cylinder units and a cylinder solenoid valve respectively arranged on each of the cylinder units; The control module is used to control the opening or closing of the cylinder solenoid valve according to the test instruction for capacity setting when the test instruction includes a test instruction for capacity setting, so as to control the gas capacity of the simulated cylinder module.

5. The calibration device for the engine leak detection system according to claim 4, characterized in that: The simulated cylinder module comprises a first simulated cylinder module; The first simulated cylinder module includes N cylinder units, each cylinder unit has a different gas capacity, and N is a positive integer greater than 1.

6. The calibration device for an engine leak detection system according to claim 1, characterized in that: The input module includes a button assembly and a control panel; The control module is connected to the button assembly and the control panel respectively; The button component is used to obtain a test instruction; The control panel is used to obtain test instructions and display the calibration process and calibration results; The control module is also used to control the control panel to display according to the test instruction.

7. The calibration device for the engine leak detection system according to claim 6, characterized in that: Also includes: a fuselage, wherein the simulated cylinder module is accommodated in the fuselage; The control panel and the button assembly are both rotatably connected to the body.

8. The calibration device for an engine leak detection system according to claim 6, characterized in that: A walking wheel assembly is installed on the fuselage.

9. A method for calibrating an engine leak detection system, executed by using a control module in a calibration device for an engine leak detection system according to any one of claims 1 to 8, characterized in that: include: Acquire a test instruction for capacity setting based on the input module; controlling the gas capacity of the simulated cylinder module according to the test instruction of the capacity setting; After the analog interface module is connected to the engine leak detection system to be calibrated, obtaining a test instruction set during the calibration process; After the simulated cylinder module is filled with the test gas to a set state, the switch state of the standard leakage port module is controlled according to the test instructions set in the calibration process, so that the test gas in the simulated cylinder module leaks within the leakage rate calibration range, thereby calibrating the engine leak detection system to be calibrated.

10. The calibration method of the engine leak detection system according to claim 9, characterized in that: After the test gas is filled into the simulated cylinder module to a set state, the switch state of the standard air leakage port module is controlled according to the test instruction set in the calibration process, so that the test gas in the simulated cylinder module leaks within the leakage rate calibration range, and the engine leak detection system to be calibrated is calibrated, including: When the test instructions set in the calibration process include the test instructions set in the qualified process, the standard air leakage port module is controlled to be in a closed state, so that the test gas in the simulated cylinder module leaks within the qualified leakage rate calibration range, and the qualified part test process of the engine leak detection system to be calibrated is calibrated; When the test instructions set in the calibration process include test instructions set in the unqualified process, the standard air leakage port module is controlled to be in an open state so that the test gas in the simulated cylinder module leaks within the unqualified leakage rate calibration range, and the unqualified part test process of the engine leak detection system to be calibrated is calibrated.

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