Control method, device, engine simulation equipment and storage medium for plateau test bench

Abstract

The present invention provides a control method, device, engine simulation equipment and storage medium for a plateau test bench, wherein the plateau test bench includes a supercharger, a bypass valve and an opening controller for adjusting the opening of the bypass valve, wherein the two ends of the bypass valve are connected to the supercharger and the ambient atmosphere respectively, and the method includes: obtaining the simulated altitude of the plateau test bench; determining the target inlet and outlet pressure difference of the bypass valve based on the simulated altitude; generating a control instruction of the opening controller based on the target inlet and outlet pressure difference, and adjusting the opening of the bypass valve to the target opening in response to the control instruction. The present invention adjusts the opening of the bypass valve to the target opening in response to the control instruction, thereby realizing automatic adjustment of the bypass valve opening without human intervention, improving the automation of the bypass valve opening adjustment, and eliminating human adjustment errors, further improving the accuracy of the target opening.

Description

Technical Field

[0001] The present invention relates to the field of engine simulation technology, and specifically to a control method and device for a plateau test bench, an engine simulation device and a storage medium. Background Art

[0002] In high-altitude environments, due to the decrease in oxygen content in the air, the air-fuel ratio of diesel engines will deteriorate, which will in turn affect performance including fuel consumption, power, emissions, etc. Therefore, major diesel engine manufacturers or OEM manufacturers will arrange field environmental tests in plateaus. In order to get rid of the plateau test window period, some manufacturers have invested heavily in building plateau test benches.

[0003] The plateau test bench simulates the intake conditions of the high altitude environment by sealing the intake system of the diesel engine and reducing the intake pressure. However, the external environment of the test bench remains in a plain state, which will lead to a problem: the principle of the supercharger bypass is to introduce the supercharger outlet pressure into the bypass valve through a rubber tube, and the pressure difference on both sides of the diaphragm spring in the bypass valve drives the actuator. This pressure difference is the pressure difference between the supercharger outlet pressure and the atmospheric pressure. When simulating the plateau test bench, the bypass valve is exposed to normal air pressure. Assuming that the simulated altitude is 70kPa, the compressor outlet pressure is the real value of the plateau environment, but the test bench environment atmospheric pressure (100kPa) is 30kPa higher than the real value of the plateau (70kPa). This makes the diaphragm spring pressure difference less than 30kPa, and the opening of the bypass valve is less than the theoretical opening. There are two ways to solve this problem. One is to reduce the atmospheric pressure side by 30kPa, and the other is to increase the supercharger outlet by 30kPa. The existing technology uses the height difference of the liquid in the U-shaped tube to compensate for the corresponding altitude pressure difference. Before the plateau bench test, the liquid in the U-shaped tube is manually adjusted to a suitable liquid level so that the opening of the bypass valve is the theoretical opening. However, the manual adjustment method is inflexible, cannot be automatically adjusted with the change of altitude, and has a large adjustment error.

[0004] There is an urgent need to provide a control method, device, engine simulation equipment and storage medium for a plateau test bench to solve the above-mentioned technical problems. Summary of the invention

[0005] In view of this, it is necessary to provide a control method, device, engine simulation equipment and storage medium for a plateau test bench to solve the technical problems in the prior art that the plateau test bench manually adjusts the U-tube liquid level before the test, resulting in an inflexible adjustment method and a large adjustment error.

[0006] On the one hand, the present invention provides a control method for a plateau test bench, the plateau test bench comprising a supercharger, a bypass valve and an opening controller for adjusting the opening of the bypass valve, wherein both ends of the bypass valve are connected to the supercharger and the ambient atmosphere, respectively, and the control method for the plateau test bench comprises:

[0007] Obtaining the simulated altitude of the plateau test bench;

[0008] determining a target inlet and outlet pressure difference of the bypass valve based on the simulated altitude;

[0009] A control command of the opening controller is generated based on the target inlet and outlet pressure difference, and the opening of the bypass valve is adjusted to the target opening in response to the control command.

[0010] In some possible implementations, determining the target inlet and outlet pressure difference of the bypass valve based on the simulated altitude includes:

[0011] determining a theoretical ambient pressure of an environment in which the bypass valve is located and a theoretical intake pressure of the bypass valve based on the simulated altitude;

[0012] The target inlet and outlet pressure difference is determined based on the theoretical intake pressure and the theoretical ambient pressure.

[0013] In some possible implementations, determining the theoretical ambient pressure of the environment in which the bypass valve is located based on the simulated altitude includes:

[0014] Constructing a corresponding relationship between the simulated altitude and the theoretical ambient pressure;

[0015] The theoretical ambient pressure is determined based on the simulated altitude and the corresponding relationship.

[0016] In some possible implementations, the bypass valve is a mechanical bypass valve or an electromagnetic bypass valve.

[0017] In some possible implementations, after determining the theoretical ambient pressure of the environment in which the bypass valve is located and the theoretical intake pressure of the bypass valve based on the simulated altitude, the method further includes:

[0018] Obtaining the last simulated altitude of the plateau test bench;

[0019] Determining an altitude simulation mode of the plateau test bench based on the last simulated altitude and the simulated altitude;

[0020] When the altitude simulation mode is an altitude rise simulation mode, sending the theoretical intake pressure to the supercharger in real time;

[0021] When the altitude simulation mode is an altitude descent simulation mode, the theoretical intake pressure is sent to the supercharger after a delay of a preset time.

[0022] In some possible implementations, determining the altitude simulation mode of the plateau test bench based on the last simulated altitude and the simulated altitude includes:

[0023] When the last simulated altitude is less than the simulated altitude, the altitude simulation mode is the altitude rising simulation mode;

[0024] When the last simulated altitude is greater than the simulated altitude, the altitude simulation mode is the altitude descent simulation mode.

[0025] In some possible implementations, the preset delay time is 5S to 10S.

[0026] On the other hand, the present invention further provides a control device for a plateau test bench, the plateau test bench comprising a supercharger, a bypass valve and an opening controller for adjusting the opening of the bypass valve, the two ends of the bypass valve are respectively connected to the supercharger and the ambient atmosphere, and the control device of the plateau test bench comprises:

[0027] A simulated altitude acquisition unit, used to acquire the simulated altitude of the plateau test bench;

[0028] a target inlet and outlet pressure difference determining unit, configured to determine a target inlet and outlet pressure difference of the bypass valve based on the simulated altitude;

[0029] The bypass valve opening adjustment unit is used to generate a control instruction of the opening controller based on the target inlet and outlet pressure difference, and adjust the opening of the bypass valve to the target opening in response to the control instruction.

[0030] On the other hand, the present invention also provides a plateau platform, including a memory and a processor, wherein:

[0031] The memory is used to store programs;

[0032] The processor is coupled to the memory and is used to execute the program stored in the memory to implement the steps in the control method of the plateau platform described in any one of the possible implementation methods mentioned above.

[0033] On the other hand, the present invention also provides a computer-readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps in the control method of a plateau platform described in any possible implementation method mentioned above are implemented.

[0034] The beneficial effect of adopting the above-mentioned embodiment is as follows: the control method of the plateau test bench provided by the present invention first obtains the simulated altitude of the plateau test bench, and then determines the target inlet and outlet pressure difference of the bypass valve based on the simulated altitude, ensuring that the target inlet and outlet pressure difference is compatible with the simulated altitude, thereby improving the accuracy of the target opening of the bypass valve. In addition, a control instruction of the opening controller is generated based on the target inlet and outlet pressure difference, and the opening of the bypass valve is adjusted to the target opening in response to the control instruction, thereby realizing the automatic adjustment of the bypass valve opening without human intervention, thereby improving the automation of the bypass valve opening adjustment, while eliminating the human adjustment error, and further improving the accuracy of the target opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] 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 those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 A schematic structural diagram of an embodiment of the local components of a plateau platform provided by the present invention;

[0037] Figure 2 A schematic flow chart of an embodiment of a control method for a plateau test bench provided by the present invention;

[0038] Figure 3 For the present invention Figure 2 A schematic flow chart of an embodiment of S202;

[0039] Figure 4 For the present invention Figure 3 A schematic flow chart of an embodiment of S301;

[0040] Figure 5 A schematic diagram of an embodiment of the process of starting theoretical intake pressure to a supercharger provided by the present invention;

[0041] Figure 6 A schematic structural diagram of an embodiment of a control device for a plateau platform provided by the present invention;

[0042] Figure 7 A schematic structural diagram of an embodiment of the engine simulation device provided by the present invention. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 those skilled in the art without creative work are within the scope of protection of the present invention.

[0044] It should be understood that the schematic drawings are not drawn to scale. The flowchart used in the present invention shows the operations implemented according to some embodiments of the present invention. It should be understood that the operations of the flowchart can be implemented out of order, and the steps without logical context can be reversed in order or implemented simultaneously. In addition, those skilled in the art, under the guidance of the content of the present invention, can add one or more other operations to the flowchart, and can also remove one or more operations from the flowchart. Some of the block diagrams shown in the accompanying drawings are functional entities, which do not necessarily correspond to physically or logically independent entities. These functional entities can be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor systems and / or microcontroller systems.

[0045] Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0046] The present invention provides a control method and device for a plateau test bench, an engine simulation device and a storage medium, which are described below respectively.

[0047] Figure 1 A schematic diagram of the structure of the local components of the plateau platform provided by the embodiment of the present invention, such as Figure 1 As shown, the plateau test bench includes a supercharger, a bypass valve and an opening controller for adjusting the opening of the bypass valve, and both ends of the bypass valve are connected to the supercharger and the ambient atmosphere respectively.

[0048] It should be noted that the bypass valve and the opening controller can be independent devices or integrated devices.

[0049] In order to improve the integration of the plateau test bench, in a specific embodiment of the present invention, the bypass valve and the opening controller are an integrated AVU valve (Air Valve Unit). The AVU valve is an automatic control valve, which is mainly used to adjust the fluid flow. Its working principle is based on the adjustment device (i.e., the bypass valve in the embodiment of the present invention) and the controller (i.e., the opening controller in the embodiment of the present invention). The adjustment device generally includes a sensor and an actuator. The sensor is used to measure the flow or pressure of the fluid and transmit these data to the controller. The controller generates a control instruction, and the actuator changes the opening of the valve based on the control instruction.

[0050] It should also be noted that the bypass valve in the embodiment of the present invention may be a mechanical bypass valve or an electromagnetic bypass valve.

[0051] When the bypass valve is a mechanical bypass valve, an opening adjustment actuator capable of adjusting the opening of the mechanical bypass valve is also required. The opening adjustment actuator generates an execution action in response to a control instruction to adjust the opening of the mechanical bypass valve.

[0052] When the bypass valve is an electromagnetic bypass valve, it can directly respond to the control command to adjust its own opening.

[0053] Figure 2 The schematic diagram of the control method of the plateau platform provided by the present invention is as follows: Figure 2 As shown, the control method of the plateau gantry includes:

[0054] S201, obtaining the simulated altitude of the plateau test bench;

[0055] S202, determining a target inlet and outlet pressure difference of the bypass valve based on the simulated altitude;

[0056] S203 . Generate a control instruction for the opening controller based on the target inlet and outlet pressure difference, and adjust the opening of the bypass valve to the target opening in response to the control instruction.

[0057] Compared with the prior art, the control method of the plateau test bench provided in the embodiment of the present invention first obtains the simulated altitude of the plateau test bench, and then determines the target inlet and outlet pressure difference of the bypass valve based on the simulated altitude, ensuring that the target inlet and outlet pressure difference is compatible with the simulated altitude, thereby improving the accuracy of the target opening of the bypass valve. In addition, a control instruction of the opening controller is generated based on the target inlet and outlet pressure difference, and the opening of the bypass valve is adjusted to the target opening in response to the control instruction, thereby realizing the automatic adjustment of the bypass valve opening without human intervention, thereby improving the automation of the bypass valve opening adjustment, while eliminating human adjustment errors, and further improving the accuracy of the target opening.

[0058] Among them, the simulated altitude should be determined and obtained according to the simulation requirements of the plateau test bench.

[0059] In some embodiments of the present invention, Figure 3 As shown, step S202 includes:

[0060] S301, determining a theoretical ambient pressure of an environment in which the bypass valve is located and a theoretical intake pressure of the bypass valve based on a simulated altitude;

[0061] S302: Determine a target inlet and outlet pressure difference based on a theoretical intake pressure and a theoretical ambient pressure.

[0062] The embodiment of the present invention determines the target inlet and outlet pressure difference based on the theoretical ambient pressure determined by the simulated altitude and the actual intake pressure, thereby eliminating the technical problem that the bypass valve pressure difference is less than the theoretical pressure difference when the plateau environment is simulated on a plateau test bench while the bypass valve is in a plain environment, thereby improving the accuracy of the determined target inlet and outlet pressure difference.

[0063] In a specific embodiment of the present invention, if the simulated altitude is 70kPa and the actual intake pressure is 300kPa, the theoretical ambient pressure is 70kPa, not the atmospheric pressure (100kPa), and the target inlet and outlet pressure difference is 300kPa-70kPa=230kPa, not 300kPa-100kPa=200kPa.

[0064] In some embodiments of the present invention, Figure 4 As shown, step S301 includes:

[0065] S401, constructing a corresponding relationship between simulated altitude and theoretical environmental pressure;

[0066] S402: Determine theoretical environmental pressure based on the simulated altitude and the corresponding relationship.

[0067] The embodiment of the present invention can quickly determine the theoretical ambient pressure according to the simulated altitude by constructing a corresponding relationship between the simulated altitude and the theoretical ambient pressure, thereby improving the regulation efficiency of the bypass valve target opening.

[0068] The corresponding relationship may be stored in the form of a functional relationship or in the form of a table.

[0069] In a specific embodiment of the present invention, the corresponding relationship between the simulated altitude and the theoretical ambient pressure is stored in a table form, as shown in Table 1:

[0070] Table 1 Correspondence between simulated altitude and theoretical ambient pressure

[0071]

[0072] When testing a plateau test bench, it is often necessary to simulate the target inlet and outlet pressure difference of the bypass valve at different altitudes, that is, the supercharger is required to simulate the outlet pressure at different simulated altitudes. The intake pressure regulation of the plateau test bench takes 5-10 seconds from receiving the command to adjusting to the target intake pressure. When the altitude drops, it means that the intake pressure increases and the fuel injection amount increases; if the boost pressure value is directly increased to the target value, the injector will increase the fuel injection amount according to the boost pressure. The larger the fuel injection amount, the more gas is required, but the intake pressure is low at this time, and the supercharger can only be forced to increase the speed, which may cause overspeeding. To solve this technical problem, in some embodiments of the present invention, such as Figure 5 As shown, after step S301, the following further includes:

[0073] S501, obtaining the last simulated altitude of the plateau test bench;

[0074] S502, determining the altitude simulation mode of the plateau test bench based on the last simulated altitude and the simulated altitude;

[0075] S503, when the altitude simulation mode is the altitude rise simulation mode, sending the theoretical intake pressure to the supercharger in real time;

[0076] S504: When the altitude simulation mode is the altitude descent simulation mode, the theoretical intake pressure is sent to the supercharger after a preset time delay.

[0077] The embodiment of the present invention sets the theoretical intake pressure to be sent to the supercharger after a preset time delay when the altitude simulation mode is the altitude descent simulation mode, thereby providing time for the outlet pressure of the supercharger to increase, avoiding over-fueling during the process of increasing the outlet pressure, eliminating the risk of overspeeding of the supercharger, and improving the safety of the plateau test bench during the test simulation process.

[0078] In a specific embodiment of the present invention, step S502 includes:

[0079] When the last simulated altitude is less than the simulated altitude, the altitude simulation mode is the altitude rise simulation mode;

[0080] When the last simulated altitude is greater than the simulated altitude, the altitude simulation mode is the altitude descent simulation mode.

[0081] It should be understood that the preset delay time should be set according to the device parameters of the supercharger. In a specific embodiment of the present invention, the preset delay time is 5S to 10S.

[0082] In some embodiments of the present invention, the control method of the plateau test bench may be performed in an automotive calibration software tool such as INCA software.

[0083] In summary, the embodiment of the present invention determines the target inlet and outlet pressure difference of the bypass valve according to the simulated altitude, and controls the opening of the bypass valve to be adjusted to the target opening through the control instructions generated by the opening controller. Frequent manual operation is not required, which can improve the accuracy and flexibility of the target opening. Furthermore, the target inlet and outlet pressure difference is determined based on the theoretical intake pressure and the theoretical ambient pressure, so that the pressure on the bypass valve diaphragm can be adapted to the simulated altitude, so that the bypass valve can be opened to the correct opening of the simulated altitude, thereby improving the accuracy of the plateau bench simulation. Furthermore, when the altitude simulation mode is the altitude descent simulation mode, the embodiment of the present invention delays sending the theoretical intake pressure to the supercharger, which can ensure the safety of the supercharger during the plateau bench simulation process.

[0084] In order to better implement the control method of the plateau test bench in the embodiment of the present invention, based on the control method of the plateau test bench, the embodiment of the present invention also provides a control device of the plateau test bench, the plateau test bench includes a supercharger, a bypass valve and an opening controller for adjusting the opening of the bypass valve, and the two ends of the bypass valve are connected to the supercharger and the ambient atmosphere respectively, such as Figure 6 As shown, the control device 600 of the plateau platform includes:

[0085] A simulated altitude acquisition unit 601 is used to acquire the simulated altitude of the plateau test bench;

[0086] A target inlet and outlet pressure difference determination unit 602, used to determine a target inlet and outlet pressure difference of the bypass valve based on a simulated altitude;

[0087] The bypass valve opening adjustment unit 603 is used to generate a control instruction of the opening controller based on the target inlet and outlet pressure difference, and adjust the opening of the bypass valve to the target opening in response to the control instruction.

[0088] The control device 600 of the plateau test bench provided in the above embodiment can implement the technical solution described in the above plateau test bench control method embodiment. The specific implementation principles of the above modules or units can refer to the corresponding contents in the above plateau test bench control method embodiment, which will not be repeated here.

[0089] like Figure 7 As shown, the present invention also provides an engine simulation device 700. The engine simulation device 700 includes a processor 701, a memory 702 and a display 703. Figure 7 Only some of the components of the engine simulation apparatus 700 are shown, but it should be understood that implementation of all of the shown components is not a requirement, and more or fewer components may alternatively be implemented.

[0090] In some embodiments, the memory 702 may be an internal storage unit of the engine simulation device 700, such as a hard disk or memory of the engine simulation device 700. In other embodiments, the memory 702 may also be an external storage device of the engine simulation device 700, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc., equipped on the engine simulation device 700.

[0091] Furthermore, the memory 702 may include both an internal storage unit and an external storage device of the engine simulation device 700. The memory 702 is used to store application software installed in the engine simulation device 700 and various data.

[0092] In some embodiments, the processor 701 may be a central processing unit (CPU), a microprocessor or other data processing chip, used to run program codes or process data stored in the memory 702, such as the control method of the plateau platform in the present invention.

[0093] In some embodiments, the display 703 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch device, etc. The display 703 is used to display information on the engine simulation device 700 and to display a visual user interface. The components 701-703 of the engine simulation device 700 communicate with each other via a system bus.

[0094] In some embodiments of the present invention, when the processor 701 executes the control program of the plateau gantry in the memory 702, the following steps may be implemented:

[0095] Get the simulated altitude of the plateau bench;

[0096] Determine a target inlet and outlet pressure difference of the bypass valve based on the simulated altitude;

[0097] A control command of the opening controller is generated based on the target inlet and outlet pressure difference, and the opening of the bypass valve is adjusted to the target opening in response to the control command.

[0098] It should be understood that: when the processor 701 executes the control program of the plateau test bench in the memory 702, in addition to the above functions, other functions can also be realized. For details, please refer to the description of the previous related method embodiments.

[0099] Furthermore, the embodiment of the present invention does not specifically limit the type of the engine simulation device 700 mentioned, and the engine simulation device 700 may be a portable engine simulation device such as a mobile phone, a tablet computer, a personal digital assistant (PDA), a wearable device, a laptop computer, or the like. Exemplary embodiments of portable engine simulation devices include, but are not limited to, portable engine simulation devices equipped with IOS, Android, Microsoft or other operating systems. The above-mentioned portable engine simulation device may also be other portable engine simulation devices, such as a laptop computer with a touch-sensitive surface (e.g., a touch panel). It should also be understood that in some other embodiments of the present invention, the engine simulation device 700 may not be a portable engine simulation device, but a desktop computer with a touch-sensitive surface (e.g., a touch panel).

[0100] Accordingly, an embodiment of the present application also provides a computer-readable storage medium, which is used to store computer-readable programs or instructions. When the program or instructions are executed by a processor, the control method steps or functions of the plateau test bench provided in the above-mentioned method embodiments can be implemented.

[0101] Those skilled in the art will appreciate that all or part of the processes of the above-mentioned embodiments can be implemented by instructing related hardware (such as a processor, a controller, etc.) through a computer program, and the computer program can be stored in a computer-readable storage medium, wherein the computer-readable storage medium is a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0102] The control method, device, engine simulation equipment and storage medium of the plateau test bench provided by the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for technical personnel in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A control method for a plateau test bench, characterized in that: The plateau test bench includes a supercharger, a bypass valve, and an opening controller for adjusting the opening of the bypass valve, wherein two ends of the bypass valve are connected to the supercharger and the ambient atmosphere, respectively. The control method of the plateau test bench includes: Obtaining the simulated altitude of the plateau test bench; determining a target inlet and outlet pressure difference of the bypass valve based on the simulated altitude; generating a control instruction of the opening controller based on the target inlet and outlet pressure difference, and adjusting the opening of the bypass valve to the target opening in response to the control instruction; The step of determining the target inlet and outlet pressure difference of the bypass valve based on the simulated altitude includes: determining a theoretical ambient pressure of an environment in which the bypass valve is located and a theoretical intake pressure of the bypass valve based on the simulated altitude; Determining the target inlet and outlet pressure difference based on the theoretical intake pressure and the theoretical ambient pressure; After determining the theoretical ambient pressure of the environment in which the bypass valve is located and the theoretical intake pressure of the bypass valve based on the simulated altitude, the method further includes: Obtaining the last simulated altitude of the plateau test bench; Determining an altitude simulation mode of the plateau test bench based on the last simulated altitude and the simulated altitude; When the altitude simulation mode is an altitude rise simulation mode, sending the theoretical intake pressure to the supercharger in real time; When the altitude simulation mode is an altitude descent simulation mode, the theoretical intake pressure is sent to the supercharger after a delay of a preset time.

2. The control method of the plateau platform according to claim 1, characterized in that: The determining of the theoretical ambient pressure of the environment in which the bypass valve is located based on the simulated altitude includes: Constructing a corresponding relationship between the simulated altitude and the theoretical ambient pressure; The theoretical ambient pressure is determined based on the simulated altitude and the corresponding relationship.

3. The control method of the plateau platform according to claim 1, characterized in that: The bypass valve is a mechanical bypass valve or an electromagnetic bypass valve.

4. The control method of the plateau platform according to claim 1, characterized in that: The determining of the altitude simulation mode of the plateau test bench based on the last simulated altitude and the simulated altitude comprises: When the last simulated altitude is less than the simulated altitude, the altitude simulation mode is the altitude rising simulation mode; When the last simulated altitude is greater than the simulated altitude, the altitude simulation mode is the altitude descent simulation mode.

5. The control method of the plateau platform according to claim 1, characterized in that: The preset delay time is 5S to 10S.

6. A control device for a plateau platform, characterized in that: The plateau test bench includes a supercharger, a bypass valve, and an opening controller for adjusting the opening of the bypass valve. The two ends of the bypass valve are connected to the supercharger and the ambient atmosphere respectively. The control device of the plateau test bench includes: A simulated altitude acquisition unit, used to acquire the simulated altitude of the plateau test bench; a target inlet and outlet pressure difference determining unit, configured to determine a target inlet and outlet pressure difference of the bypass valve based on the simulated altitude; a bypass valve opening adjustment unit, configured to generate a control instruction for the opening controller based on the target inlet and outlet pressure difference, and to adjust the opening of the bypass valve to the target opening in response to the control instruction; The step of determining the target inlet and outlet pressure difference of the bypass valve based on the simulated altitude includes: determining a theoretical ambient pressure of an environment in which the bypass valve is located and a theoretical intake pressure of the bypass valve based on the simulated altitude; Determining the target inlet and outlet pressure difference based on the theoretical intake pressure and the theoretical ambient pressure; After determining the theoretical ambient pressure of the environment in which the bypass valve is located and the theoretical intake pressure of the bypass valve based on the simulated altitude, the method further includes: Obtaining the last simulated altitude of the plateau test bench; Determining an altitude simulation mode of the plateau test bench based on the last simulated altitude and the simulated altitude; When the altitude simulation mode is an altitude rise simulation mode, sending the theoretical intake pressure to the supercharger in real time; When the altitude simulation mode is an altitude descent simulation mode, the theoretical intake pressure is sent to the supercharger after a delay of a preset time.

7. An engine simulation device, characterized in that: comprising a memory and a processor, wherein: The memory is used to store programs; The processor is coupled to the memory and is used to execute the program stored in the memory to implement the steps in the control method of the plateau platform described in any one of claims 1 to 5 above.

8. A computer-readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, the steps of the control method of the plateau platform described in any one of claims 1 to 5 are implemented.

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