Height adjusting method of air suspension, electronic control unit and vehicle

Abstract

The invention provides a height adjusting method of an air suspension, an electronic control unit and a vehicle, and relates to the technical field of automobile suspensions. According to the method, in response to an input suspension operation mode selection instruction, a target suspension operation mode corresponding to the suspension operation mode selection instruction is determined, the suspension operation mode is the operation mode of an air suspension in each life cycle of a vehicle, and the life cycle comprises at least one of a factory period, a transportation period, a driving period, a collision period and a test period; determining a target suspension height corresponding to the target suspension operation mode; and according to the target suspension height, the height of the vehicle air suspension is adjusted. The method can be suitable for height adjustment of the air suspension in various life cycles and different application scenes of the vehicle, and the requirements of a user for vehicle comfort and safety are met.

Description

Technical Field

[0001] The present application relates to the technical field of automobile suspension, and in particular to a height adjustment method of an air suspension, an electronic control unit and a vehicle. Background Art

[0002] The air suspension system can use an air compressor to form compressed air and send the compressed air to the air chambers of the springs and shock absorbers to change the height of the vehicle, thereby ensuring the comfort and stability of the vehicle.

[0003] In the related technology, the Electronic Control Unit (ECU, also known as the on-board computer) can determine the operating mode of the air suspension based on the driving conditions and signals from various sensors, and then control the air compressor and the exhaust valve to automatically compress or extend the spring, thereby lowering or raising the ground clearance of the chassis, and adjusting the height of the air suspension to the height corresponding to the operating mode to increase the stability of the vehicle body at high speeds or the passability in complex road conditions.

[0004] However, the height adjustment of existing air suspensions cannot meet users' demands for vehicle comfort and safety. Summary of the invention

[0005] The embodiments of the present application provide a method for adjusting the height of an air suspension, an electronic control unit, and a vehicle, which can be applicable to the height adjustment of the air suspension in various life cycles and different application scenarios of the vehicle, and meet the user's needs for vehicle comfort and safety.

[0006] In a first aspect, an embodiment of the present application provides a method, comprising:

[0007] In response to the input suspension operation mode selection instruction, determining a target suspension operation mode corresponding to the suspension operation mode selection instruction, the suspension operation mode being an operation mode of the air suspension in each life cycle of the vehicle, the life cycle including at least one of a factory period, a transportation period, a driving period, a collision period, and a test period;

[0008] determining a target suspension height corresponding to the target suspension operation mode;

[0009] The height of the vehicle air suspension is adjusted according to the target suspension height.

[0010] In a possible implementation manner, the suspension operation mode includes at least one of a factory mode, a transport mode, a driving mode, a crash mode, and a test mode;

[0011] When the target suspension operation mode is the driving mode, determining the target suspension height corresponding to the target suspension operation mode includes:

[0012] In response to a sub-mode selection instruction, determining a target suspension operation sub-mode corresponding to the sub-mode selection instruction;

[0013] determining a first suspension height corresponding to the target suspension operation sub-mode, and determining a target suspension height according to the first suspension height;

[0014] The suspension operation sub-modes include at least one of a default mode, an economic mode, a sports mode, an off-road mode, an entry mode, an access mode, a racing mode and a trailer mode.

[0015] In a possible implementation manner, when the target suspension operation sub-mode is a default mode or an economic mode, determining a first suspension height corresponding to the target suspension operation sub-mode includes:

[0016] Acquire the current vehicle speed of the vehicle, and if the current vehicle speed is greater than or equal to the first vehicle speed, determine the first suspension height to be the fifth height; if the current vehicle speed is less than the first vehicle speed and greater than or equal to the second vehicle speed, determine the first suspension height to be the third height; if the current vehicle speed is less than the second vehicle speed and greater than or equal to the third vehicle speed, determine the first suspension height to be the second height; if the current vehicle speed is less than the third vehicle speed, determine the first suspension height to be the first height;

[0017] or,

[0018] In response to the input first height level selection instruction, determining a first height level corresponding to the first height level selection instruction; and determining a first suspension height corresponding to the first height level according to a preset correspondence between the height level and the suspension height;

[0019] The suspension height includes any one of a first height, a second height, a third height, a fourth height, and a fifth height, and the first height < second height < third height < fourth height < fifth height.

[0020] In a possible implementation manner, when the target suspension operation sub-mode is a default mode, before determining the first suspension height corresponding to the target suspension operation sub-mode, the method further includes:

[0021] Obtaining a second suspension height of the vehicle during the most recent operation;

[0022] adjusting the air suspension of the vehicle to an initial state according to the second suspension height;

[0023] After the current vehicle speed is acquired or the first height level selection instruction is received, the step of determining the first suspension height corresponding to the target suspension operation sub-mode is performed.

[0024] In a possible implementation manner, when the target suspension operation sub-mode is a sport mode or an off-road mode, determining a first suspension height corresponding to the target suspension operation sub-mode includes:

[0025] determining whether a second altitude level selection instruction is received within a preset time period after receiving the sub-mode selection instruction;

[0026] If yes, determining the second height level corresponding to the second height level selection instruction; determining the first suspension height corresponding to the second height level according to the correspondence between the preset height level and the suspension height;

[0027] If not, determining the first suspension height to be a third height;

[0028] Among them, when the target suspension operation sub-mode is the sports mode, the second height level is the height level corresponding to the fourth height or the fifth height, and when the target suspension operation sub-mode is the off-road mode, the second height level is the first height or the height level corresponding to the second height; the first height < the second height < the third height < the fourth height < the fifth height.

[0029] In a possible implementation manner, when the target suspension operation mode is a factory mode, a collision mode, or a test mode, the target suspension height is determined to be a third height;

[0030] When the target suspension operation mode is the transport mode, determining the target suspension height to be a fourth height;

[0031] When the target suspension operation sub-mode is a racing mode, determining the first suspension height to be a fifth height;

[0032] When the target suspension operation sub-mode is a trailer mode, determining the first suspension height to be a third height;

[0033] Among them, the third height ﹤ fourth height ﹤ fifth height.

[0034] In a possible implementation manner, adjusting the height of the vehicle air suspension according to the target suspension height includes:

[0035] Determining a front axle adjustment height and a rear axle adjustment height according to a current height of the vehicle air suspension and the target suspension height;

[0036] According to the axle adjustment height and the angle adjustment height of the front axle, sequentially adjusting the axle height and the angle height of the front axle, so as to adjust the front axle height of the air suspension to the target suspension height;

[0037] According to the axle adjustment height and the angle adjustment height in the rear axle adjustment height, the axle height and the angle height of the rear axle are adjusted in sequence to adjust the rear axle height of the air suspension to the target suspension height.

[0038] In a possible implementation manner, when the target suspension operation mode is the entry mode, the target suspension height is determined to be a sixth height;

[0039] Accordingly, adjusting the height of the vehicle air suspension according to the target suspension height includes:

[0040] adjusting the height of the left front axle of the air suspension to a sixth height;

[0041] When the target suspension operation mode is the access mode, determining the target suspension height to be a sixth height;

[0042] Accordingly, adjusting the height of the vehicle air suspension according to the target suspension height includes:

[0043] adjusting the height of the air suspension rear axle to a sixth height;

[0044] Among them, the first height﹤second height﹤third height﹤fourth height﹤fifth height﹤sixth height.

[0045] In a second aspect, an embodiment of the present application provides an electronic control unit ECU, comprising:

[0046] a mode determination module, configured to determine, in response to an input suspension operation mode selection instruction, a target suspension operation mode corresponding to the suspension operation mode selection instruction, wherein the suspension operation mode is an operation mode of the air suspension in each life cycle of the vehicle, wherein the life cycle includes at least one of a factory period, a transportation period, a driving period, a collision period, and a test period;

[0047] The height adjustment module is used to determine a target suspension height corresponding to the target suspension operation mode; and adjust the height of the vehicle air suspension according to the target suspension height.

[0048] In a third aspect, an embodiment of the present application provides another electronic control unit ECU, comprising:

[0049] A processor, and a memory communicatively connected to the processor;

[0050] Memory is used to store computer executable instructions;

[0051] The processor is used to execute the computer-executable instructions stored in the memory to implement the height adjustment method of the air suspension of the first aspect.

[0052] In a fourth aspect, an embodiment of the present application provides a vehicle, comprising the electronic control unit of the third aspect.

[0053] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer execution instructions are stored. When the computer execution instructions are executed by a processor, they are used to implement the height adjustment method of the air suspension of the first aspect.

[0054] In a sixth aspect, an embodiment of the present application provides a computer program product, including a computer program, which, when executed by a processor, is used to implement the height adjustment method of the air suspension of the first aspect.

[0055] The embodiments of the present application provide a method for adjusting the height of an air suspension, an electronic control unit, and a vehicle. A user can select a suitable target suspension operation mode according to the vehicle life cycle and different scenario requirements, thereby adjusting the vehicle air suspension to a corresponding target suspension height, which greatly increases the height adjustment range of the air suspension and can be applicable to the height adjustment of the air suspension in various life cycles and different application scenarios of the vehicle, thereby meeting the user's requirements for vehicle comfort and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0057] Figure 1 A system architecture diagram of an embodiment of the present application;

[0058] Figure 2 A flow chart of a method for adjusting the height of an air suspension according to an embodiment of the present application;

[0059] Figure 3 A schematic diagram of a suspension operation mode selection interface according to an embodiment of the present application;

[0060] Figure 4 A schematic diagram of a sub-mode selection interface according to an embodiment of the present application;

[0061] Figure 5 This is a schematic diagram of the structure of an electronic control unit according to an embodiment of the present application;

[0062] Figure 6 This is a schematic structural diagram of an electronic control unit according to another embodiment of the present application.

[0063] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0064] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0065] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application 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 interchangeable where appropriate, so that the embodiments of the present application 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 are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0066] In the technical solution of this application, the collection, storage, use, processing, transmission, provision and disclosure of information such as financial data or user data involved shall comply with the provisions of relevant laws and regulations and shall not violate public order and good morals.

[0067] It should be noted that in the embodiments of the present application, certain software, components, models and other existing solutions in the industry may be mentioned, and they should be regarded as exemplary. Their purpose is only to illustrate the feasibility of implementing the technical solution of the present application, but it does not mean that the applicant has or will necessarily use the solution.

[0068] It should also be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant laws, regulations and standards, and provide corresponding operation entrances for users to choose to authorize or refuse.

[0069] The height adjustment method, electronic control unit and vehicle of the air suspension of the present application can be used in the field of automobile suspension technology, and can also be used in any field other than the field of automobile suspension technology, such as the field of vehicle control, etc. The application field of the height adjustment method, electronic control unit and vehicle of the air suspension of the present application is not limited.

[0070] The air suspension height adjustment method, electronic control unit and vehicle of the present application can be applied to scenarios where the air suspension height is adjusted in various life cycles of the vehicle, such as suspension height adjustment during vehicle transportation, suspension height adjustment during driving, etc. As long as the vehicle air suspension height needs to be adjusted, the air suspension height adjustment method, electronic control unit and vehicle of the present application can be applied.

[0071] The air suspension system can use an air compressor to form compressed air and send the compressed air to the air chambers of the springs and shock absorbers to change the height of the vehicle, thereby ensuring the comfort and stability of the vehicle.

[0072] In the related technology, the Electronic Control Unit (ECU, also known as the on-board computer) can determine the operating mode of the air suspension based on the driving conditions and signals from various sensors, and then control the air compressor and the exhaust valve to automatically compress or extend the spring, thereby lowering or raising the ground clearance of the chassis, and adjusting the height of the air suspension to the height corresponding to the operating mode to increase the stability of the vehicle body at high speeds or the passability in complex road conditions.

[0073] In the related technology, the operation modes of air suspension are mainly divided into three modes: high-speed mode, standard mode and off-road mode. Different operation modes correspond to different suspension heights. In standard mode, the suspension height is in the middle, which is suitable for urban roads; in off-road mode, the suspension height is higher, the vehicle has good passability, and is suitable for off-road and other uneven roads; in high-speed mode, the suspension height is lower, which can reduce the wind resistance of the vehicle body and improve fuel economy, and is suitable for highways.

[0074] However, the height adjustment of the above-mentioned air suspension only takes into account the needs during vehicle operation, while ignoring the adjustment of other scenarios in the vehicle life cycle, and cannot meet the user's needs for vehicle comfort and safety.

[0075] Based on the above technical problems, the inventive concept of this application is: how to provide an air suspension height adjustment solution that can be suitable for various life cycles of the vehicle and different application scenarios to meet users' needs for vehicle comfort and safety.

[0076] The embodiments of the present application provide an air suspension height adjustment method, an electronic control unit, and a vehicle, which can select a suitable target suspension operation mode according to the vehicle life cycle and different scenario requirements, thereby adjusting the vehicle air suspension to the corresponding target suspension height. A suitable suspension height can be selected for each scenario, meeting the user's requirements for vehicle comfort and safety.

[0077] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0078] Figure 1 This is a system architecture diagram of an embodiment of the present application, such as Figure 1 As shown, the user can select the required suspension operation mode on the vehicle display screen according to the scenario, and the display screen generates a suspension operation mode selection instruction according to the information input by the user, and sends the suspension operation mode selection instruction to the ECU. In response to the input suspension operation mode selection instruction, the ECU determines the target suspension operation mode corresponding to the suspension operation mode selection instruction; determines the target suspension height corresponding to the target suspension operation mode; generates a height adjustment instruction according to the target suspension height, and sends the height adjustment instruction to the air suspension system to adjust the height of the vehicle air suspension to the target suspension height.

[0079] Figure 2 This is a flow chart of a height adjustment method of an air suspension according to an embodiment of the present application. This embodiment uses an electronic control unit ECU as an execution subject to illustrate the height adjustment method of the air suspension. Figure 2 As shown, the height adjustment method of the air suspension may include the following steps:

[0080] S201 : In response to an input suspension operation mode selection instruction, determining a target suspension operation mode corresponding to the suspension operation mode selection instruction.

[0081] In this embodiment, the suspension operation mode may be an operation mode of the air suspension in each life cycle of the vehicle, and the life cycle may include at least one of a factory period, a transportation period, a driving period, a collision period, and a test period. Of course, the life cycle of the vehicle is not limited thereto, and those skilled in the art may flexibly set it according to actual conditions, and no limitation is made here.

[0082] In this embodiment, the factory period can be the life cycle of the vehicle from the time it leaves the final assembly line to the time it leaves the factory; the transportation period can be the life cycle of the vehicle from the time it leaves the factory to the time it is delivered to the user; the driving period can be the life cycle of the vehicle after it is delivered to the user and the user uses the vehicle normally; the collision period can be the life cycle of the vehicle when a collision occurs; and the test period can be the life cycle of the vehicle undergoing Dyno testing, that is, testing specific driving conditions or diagnostic usage conditions.

[0083] In this embodiment, each life cycle of the vehicle may correspond to a suspension operation mode. Those skilled in the art may flexibly set the suspension operation mode corresponding to each life cycle according to actual needs, and no limitation is made here.

[0084] In this embodiment, a technician or user can manually or voice-control select a suitable suspension operation mode on the mode selection interface of the vehicle display screen (or the control interface of the mobile terminal), and the mode selection interface can generate a corresponding suspension operation mode selection instruction according to the input information, and send the suspension operation mode selection instruction to the ECU. The ECU can pre-store a first correspondence between different suspension operation mode selection instructions and suspension operation modes. After receiving the suspension operation mode selection instruction, the ECU can determine the target suspension operation mode corresponding to the suspension operation mode selection instruction according to the preset first correspondence.

[0085] For example, Figure 3 FIG. 1 is a schematic diagram of a suspension operation mode selection interface according to an embodiment of the present application. Figure 3 As shown, after the user wakes up the suspension operation mode selection interface, he can select a suitable suspension operation mode according to actual scene requirements.

[0086] S202: Determine a target suspension height corresponding to the target suspension operation mode.

[0087] In this embodiment, each suspension operation mode may correspond to one or more suspension heights. Those skilled in the art may flexibly set the suspension heights corresponding to each suspension operation mode according to actual conditions, and no limitation is made here.

[0088] In this embodiment, a person skilled in the art can pre-set a second correspondence between the suspension operating mode and the suspension height, and pre-store the second correspondence in a storage module of the ECU. After the ECU determines the target suspension operating mode corresponding to the suspension operating mode selection instruction, the target suspension height corresponding to the target suspension operating mode can be simply and accurately determined according to the pre-stored second correspondence.

[0089] S203: Adjusting the height of the vehicle air suspension according to the target suspension height.

[0090] In this embodiment, after determining the target suspension height, the ECU can generate a corresponding control instruction according to the target suspension height and send the control instruction to the air suspension system. The air suspension system can adjust the vehicle's air suspension to the target suspension height according to the received control instruction.

[0091] In this embodiment, the user can select a suitable target suspension operating mode according to the vehicle life cycle and different scenario requirements, thereby adjusting the vehicle air suspension to the corresponding target suspension height, greatly increasing the height adjustment range of the air suspension, and can be suitable for height adjustment of the air suspension in various vehicle life cycles and different application scenarios, thereby meeting the user's needs for vehicle comfort and safety.

[0092] In a possible implementation manner, the suspension operation mode may include at least one of a factory mode, a transport mode, a driving mode, a collision mode, and a test mode; when the target suspension operation mode is the driving mode, the above step S202 of determining the target suspension height corresponding to the target suspension operation mode may include:

[0093] S11: In response to a sub-mode selection instruction, determining a target suspension operation sub-mode corresponding to the sub-mode selection instruction.

[0094] S12: Determine a target suspension operation sub-mode, a corresponding first suspension height, and determine a target suspension height according to the first suspension height.

[0095] The suspension operation sub-modes include at least one of a default mode, an economic mode, a sports mode, an off-road mode, an entry mode, an access mode, a racing mode and a trailer mode.

[0096] In this embodiment, the suspension height may include: a first height, a second height, a third height, a fourth height, a fifth height and a sixth height, and each height decreases in sequence.

[0097] In this embodiment, the sub-mode selection instruction may be information input manually or by voice control by a user on a mode selection interface.

[0098] In this embodiment, the specific height values ​​of the first height, the second height, the third height, the fourth height, the fifth height and the sixth height can be flexibly set by those skilled in the art according to actual needs, and no limitation is made here. For example, the first height A is the highest height of the suspension, which can be the standard suspension height + 40, the second height B can be the standard suspension height + 20, the third height C can be the standard suspension height, the fourth height D can be the standard suspension height - 15, the fifth height E can be the standard suspension height - 25, and the sixth height F is the lowest height of the suspension, which can be the standard suspension height - 60.

[0099] For example, Figure 4 Schematic diagram of a sub-mode selection interface according to an embodiment of the present application. Figure 4 As shown, after the user selects the driving mode in the suspension operation mode selection interface, the sub-mode selection interface can display the sub-modes corresponding to the driving mode for the user to select. The sub-mode selection interface can display the sub-modes of the suspension operation mode and the driving mode at the same time, or only display the sub-modes of the driving mode, without any restriction.

[0100] In this embodiment, the driving mode may include multiple sub-modes, and the suspension height may also include multiple levels of heights to meet the needs of users in different scenarios during driving, so that users can choose a suitable suspension height in different driving scenarios, thereby meeting users' needs for vehicle comfort and safety.

[0101] In a possible implementation, when the target suspension operation sub-mode is the default mode or the economy mode, determining the first suspension height corresponding to the target suspension operation sub-mode in step S12 may include:

[0102] S21: Acquire the current vehicle speed of the vehicle, and if the current vehicle speed is greater than or equal to the first vehicle speed, determine the first suspension height as the fifth height.

[0103] S22: If the current vehicle speed is less than the first vehicle speed and greater than or equal to the second vehicle speed, determine the first suspension height to be the third height.

[0104] S23: If the current vehicle speed is less than the second vehicle speed and greater than or equal to the third vehicle speed, determine the first suspension height to be the second height.

[0105] S24: If the current vehicle speed is less than the third vehicle speed, determining the first suspension height to be the first height.

[0106] In this embodiment, the first height < the second height < the third height < the fourth height < the fifth height.

[0107] In this embodiment, the specific values ​​of the first vehicle speed, the second vehicle speed and the third vehicle speed can be flexibly set by those skilled in the art according to actual conditions, and no restrictions are imposed herein, as long as the first vehicle speed is greater than the second vehicle speed and the second vehicle speed is greater than the third vehicle speed.

[0108] In this embodiment, after the user selects the default mode or the economy mode, the ECU can obtain the current speed of the vehicle and automatically select the suspension height corresponding to the current speed quickly and accurately according to the preset correspondence between the speed and the suspension height.

[0109] In another possible implementation, when the target suspension operation sub-mode is the default mode or the economy mode, determining the first suspension height corresponding to the target suspension operation sub-mode in step S12 may further include:

[0110] S31: In response to an input first height level selection instruction, determining a first height level corresponding to the first height level selection instruction.

[0111] S32: Determine a first suspension height corresponding to the first height level according to a preset correspondence relationship between the height level and the suspension height.

[0112] In this embodiment, after the user selects the default mode or the economy mode in the sub-mode selection interface, the user may also manually select a specific altitude level in the displayed altitude level display interface.

[0113] In this embodiment, the suspension height may include any one of a first height, a second height, a third height, a fourth height, and a fifth height, and the first height < second height < third height < fourth height < fifth height.

[0114] In this embodiment, the corresponding relationship between the height level and the suspension height can be flexibly set by those skilled in the art according to actual conditions, and no limitation is imposed here. For example, the corresponding relationship between the height level and the suspension height can be: 1-first height A, 2-second height B, 3-third height C, 4-fourth height D, 5-fifth height E.

[0115] In this embodiment, the correspondence between height levels and suspension heights may be pre-stored in the ECU. After the ECU receives the first height level selection instruction, it can simply and accurately determine the corresponding suspension height based on the height level manually input by the user and the pre-stored correspondence.

[0116] In a possible implementation manner, when the target suspension operation sub-mode is the default mode, before determining the first suspension height corresponding to the target suspension operation sub-mode in the above step S12, the method further includes:

[0117] S41: Obtain the second suspension height during the most recent operation of the vehicle.

[0118] S42: Adjusting the air suspension of the vehicle to an initial state according to the second suspension height.

[0119] S43: after acquiring the current vehicle speed or receiving the first height level selection instruction, executing the step of determining the first suspension height corresponding to the target suspension operation sub-mode.

[0120] In this embodiment, if the ECU does not receive a suspension operation mode selection instruction within a certain period of time after the vehicle is powered on, it automatically enters the default mode and automatically obtains the second suspension height when the vehicle was last operated.

[0121] In this embodiment, when the target suspension operation sub-mode is the default mode, the ECU can first adjust the vehicle's air suspension to an initial state based on the suspension height of the vehicle when it was last running, to adapt to the initial stage when the vehicle has no speed after power-on or the user has not selected a specific height level.

[0122] In a possible implementation, when the target suspension operation sub-mode is the sport mode or the off-road mode, determining the first suspension height corresponding to the target suspension operation sub-mode in step S12 may include:

[0123] S51: Determine whether a second altitude level selection instruction is received within a preset time period after receiving a sub-mode selection instruction.

[0124] S52: If yes, determine the second height level corresponding to the second height level selection instruction; and determine the first suspension height corresponding to the second height level according to the correspondence between the preset height level and the suspension height.

[0125] S53: If not, determine that the first suspension height is the third height.

[0126] Among them, when the target suspension operation sub-mode is the sports mode, the second height level is the height level corresponding to the fourth height or the fifth height; when the target suspension operation sub-mode is the off-road mode, the second height level is the first height or the height level corresponding to the second height; the first height < the second height < the third height < the fourth height < the fifth height.

[0127] In this embodiment, the specific preset time length can be flexibly set by those skilled in the art according to actual conditions, and no limitation is made here.

[0128] In this embodiment, after the user activates the sport mode, he can manually select the suspension height level 5 and adjust the suspension height to the fifth height E; he can also manually select the suspension height level 4 and adjust the suspension height to the fourth height D; if the suspension height level is not manually selected, the suspension height is adjusted to the third height C.

[0129] In this embodiment, after the user activates the off-road mode, the user can manually select suspension height level 1 to adjust the suspension height to the first height A; the user can also manually select suspension height level 2 to adjust the suspension height to the second height B; if the suspension height level is not manually selected, the suspension height is adjusted to the third height C.

[0130] In this embodiment, after the user activates the sports mode, the suspension height can be adjusted to a lower fourth height or fifth height according to the height level input by the user, and the vehicle height can be lowered to reduce wind resistance and improve fuel economy. After the user activates the off-road mode, the suspension height can be adjusted to a higher first height or second height according to the height level input by the user, and the vehicle height can be raised to increase vehicle passability and improve vehicle stability.

[0131] In a possible implementation manner, when the target suspension operating mode is the factory mode, the collision mode, or the test mode, the target suspension height is determined to be the third height.

[0132] When the target suspension operation mode is the transport mode, the target suspension height is determined to be a fourth height.

[0133] When the target suspension operation sub-mode is the racing mode, the first suspension height is determined to be the fifth height.

[0134] When the target suspension operation sub-mode is the trailer mode, the first suspension height is determined to be the third height.

[0135] Among them, the third height ﹤ fourth height ﹤ fifth height.

[0136] In this embodiment, when the target suspension operation mode is the factory mode, the axle height and four-wheel alignment will be performed to calibrate the suspension height. At this time, the suspension height corresponds to the third height C. When the target suspension operation mode is the collision mode, the corresponding suspension height can be set to the third height C to protect the safety of the owner. When the target suspension operation mode is the test mode, the corresponding suspension height can also be set to the third height C for testing. When the target suspension operation mode is the transport mode, in order to avoid scratches and dirt and save space, the corresponding suspension height can be set to the fourth height D. When the target suspension operation sub-mode is the racing mode, the corresponding suspension height can be set to the fifth height E, and the vehicle height can be lowered to reduce wind resistance. When the target suspension operation sub-mode is the trailer mode, the corresponding suspension height can be set to the third height C. When other vehicles break down and need to tow other vehicles with their own vehicles, this mode can be activated for towing.

[0137] In a possible implementation, the above step S203 of adjusting the height of the vehicle air suspension according to the target suspension height may include:

[0138] S61: determining a front axle adjustment height and a rear axle adjustment height according to a current height of the vehicle air suspension and a target suspension height;

[0139] S62: adjusting the axle height and the angular height of the front axle in sequence according to the axle adjustment height and the angular adjustment height in the front axle adjustment height, so as to adjust the front axle height of the air suspension to the target suspension height;

[0140] S63: According to the axle adjustment height and the angle adjustment height in the rear axle adjustment height, the axle height and the angle height of the rear axle are adjusted in sequence to adjust the rear axle height of the air suspension to the target suspension height.

[0141] In this embodiment, after determining the front axle adjustment height and the rear axle adjustment height, the ECU can generate a control instruction according to the front axle adjustment height and the rear axle adjustment height, as well as the priority order of axle height and angular height adjustment, and send the control instruction to the air suspension system, so that after the air suspension system receives the control instruction, it opens the relevant solenoid valve, air tank or compressor, inflates and deflates the corresponding air spring, and adjusts the height of the front axle and the rear axle in turn.

[0142] In this embodiment, during the process of adjusting the height of the air suspension, it is necessary to follow the principle of adjusting the front axle first and then the rear axle, and adjusting the axle height first and then the angular height for step-by-step adjustment.

[0143] In this embodiment, when adjusting the height of the vehicle air suspension, a step-by-step adjustment method of adjusting the front axle first and then the rear axle can be adopted, and when adjusting the front axle / rear axle, the priority order of adjusting the axle height first and then the angle height is adopted. Through such a setting, the adjustment range can be reduced, and the comfort and safety of the user during the suspension height adjustment process can be improved.

[0144] In a possible implementation manner, when the target suspension operating mode is the entry mode, the target suspension height is determined to be a sixth height.

[0145] Accordingly, the above step S203 adjusts the height of the vehicle air suspension according to the target suspension height, including: adjusting the height of the left front axle of the air suspension to a sixth height;

[0146] When the target suspension operation mode is the access mode, the target suspension height is determined to be a sixth height.

[0147] Correspondingly, the above step S203 adjusts the height of the vehicle air suspension according to the target suspension height, including: adjusting the height of the rear axle of the air suspension to a sixth height.

[0148] Among them, the first height﹤second height﹤third height﹤fourth height﹤fifth height﹤sixth height.

[0149] In this embodiment, the specific implementation of adjusting the height of the left front axle of the air suspension to the sixth height and adjusting the height of the rear axle of the air suspension to the sixth height can refer to the above steps S61-S63, which will not be repeated here.

[0150] In this embodiment, when the target suspension operation mode is the entry mode, the height of the left front axle of the air suspension is adjusted to correspond to the position of the driver's seat. When the driver's seat is on the right side, the height of the right front axle of the air suspension should be adjusted to the sixth height F accordingly.

[0151] In this embodiment, when the target suspension operation mode is the entry mode, the height of the left front axle of the air suspension can be adjusted to the sixth height F, so that the user can enter the driver's seat. When the target suspension operation mode is the access mode, the height of the rear axle of the air suspension can be adjusted to the sixth height F, so that the user can access items from the trunk or the back seat.

[0152] The height adjustment method of the air suspension of the present application is described below with reference to a specific embodiment.

[0153] In a specific embodiment, after a vehicle leaves the final assembly line, the height of the air suspension can be adjusted according to the different life cycles of the vehicle. The specific process is as follows:

[0154] In the first step, after the vehicle leaves the final assembly line, the technician manually selects the factory mode on the mode selection interface of the vehicle display screen. The ECU responds to the input suspension operation mode selection instruction, determines that the target suspension operation mode corresponding to the suspension operation mode selection instruction is the factory mode, and adjusts the height of the air suspension to the third height C.

[0155] In the second step, during the transportation of the vehicle, the technician manually selects the transportation mode on the mode selection interface of the vehicle display screen, and the ECU responds to the input suspension operation mode selection instruction, determines that the target suspension operation mode corresponding to the suspension operation mode selection instruction is the transportation mode, and adjusts the height of the air suspension to the fourth height D.

[0156] Step 3: When the vehicle is in normal use, the user manually selects a sub-mode under the driving mode on the mode selection interface of the vehicle display screen: in the default mode, the ECU responds to the sub-mode selection instruction, determines that the target suspension operation sub-mode corresponding to the sub-mode selection instruction is the default mode, obtains the second suspension height of the vehicle during the last operation, and adjusts the vehicle's air suspension to the initial state according to the second suspension height. After obtaining the current speed of the vehicle, the ECU automatically selects the corresponding suspension height according to the current speed.

[0157] In the fourth step, when the vehicle enters a highway section, the user manually selects a sub-mode under the driving mode on the mode selection interface of the vehicle display screen: the sport mode. The ECU responds to the sub-mode selection instruction, determines that the target suspension operation sub-mode corresponding to the sub-mode selection instruction is the sport mode, determines that the height level corresponding to the received second height level selection instruction is the fifth height level, and adjusts the height of the air suspension to the fifth height E.

[0158] In the fifth step, when the vehicle collides, the user manually selects the collision mode on the mode selection interface of the vehicle display screen, and the ECU responds to the input suspension operation mode selection instruction, determines that the target suspension operation mode corresponding to the suspension operation mode selection instruction is the collision mode, and adjusts the height of the air suspension to the third height C.

[0159] Figure 5 Schematic diagram of the structure of an electronic control unit ECU according to an embodiment of the present application, as shown in Figure 5 As shown, the electronic control unit includes: a mode determination module 51, which is used to determine the target suspension operation mode corresponding to the suspension operation mode selection instruction in response to the input suspension operation mode selection instruction, and the suspension operation mode is the operation mode of the air suspension in each life cycle of the vehicle, and the life cycle includes at least one of the factory period, transportation period, driving period, collision period and test period; a height adjustment module 52, which is used to determine the target suspension height corresponding to the target suspension operation mode; according to the target suspension height, the height of the vehicle air suspension is adjusted.

[0160] The electronic control unit provided in the embodiment of the present application can execute the technical solution shown in the above method embodiment, and its implementation principle and beneficial effects are similar, which will not be repeated here.

[0161] Figure 6 Schematic diagram of the structure of an electronic control unit ECU according to an embodiment of the present application, as shown in Figure 6 As shown, the electronic control unit includes: a processor 601, and a memory 602 that is communicatively connected to the processor 601; the memory 602 stores computer-executable instructions; the processor 601 executes the computer-executable instructions stored in the memory 602 to implement the steps of the height adjustment method of the air suspension in the above-mentioned method embodiments.

[0162] In the above-mentioned electronic control unit, the memory 602 and the processor 601 are electrically connected directly or indirectly to realize data transmission or interaction. For example, these elements can be electrically connected to each other through one or more communication buses or signal lines, such as through a bus connection. The memory 602 stores computer-executable instructions for implementing the data access control method, including at least one software function module that can be stored in the memory 602 in the form of software or firmware. The processor 601 executes various functional applications and data processing by running the software programs and modules stored in the memory 602.

[0163] The memory 602 may be, but is not limited to, a random access memory (RAM), a read only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electric erasable programmable read-only memory (EEPROM), etc. The memory 602 is used to store programs, and the processor 601 executes the programs after receiving the execution instruction. Furthermore, the software programs and modules in the above-mentioned memory 602 may also include an operating system, which may include various software components and / or drivers for managing system tasks (such as memory management, storage device control, power management, etc.), and may communicate with various hardware or software components to provide an operating environment for other software components.

[0164] The processor 601 may be an integrated circuit chip having the ability to process signals. The processor 601 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc. The methods, steps, and logic diagrams disclosed in the embodiments of the present application may be implemented or executed. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0165] An embodiment of the present application further provides a vehicle, the vehicle comprising: Figure 6 The electronic control unit shown.

[0166] An embodiment of the present application further provides a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the steps of each method embodiment of the present application.

[0167] An embodiment of the present application further provides a computer program product, including a computer program, which implements the steps of each method embodiment of the present application when executed by a processor.

[0168] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required by the present application.

[0169] It should be further noted that, although the various steps in the flowchart are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowchart may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these sub-steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0170] It should be understood that the above-mentioned device embodiments are only illustrative, and the device of the present application can also be implemented in other ways. For example, the division of units / modules in the above-mentioned embodiments is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units, modules or components can be combined, or can be integrated into another system, or some features can be ignored or not executed.

[0171] In addition, unless otherwise specified, each functional unit / module in each embodiment of the present application may be integrated into one unit / module, each unit / module may exist physically separately, or two or more units / modules may be integrated together. The above-mentioned integrated unit / module may be implemented in the form of hardware or in the form of a software program module.

[0172] In the above embodiments, the description of each embodiment has its own emphasis. For the part not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0173] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the appended claims.

[0174] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A method for adjusting the height of an air suspension, characterized in that: include: In response to the input suspension operation mode selection instruction, determining a target suspension operation mode corresponding to the suspension operation mode selection instruction, the suspension operation mode being an operation mode of the air suspension in each life cycle of the vehicle, the life cycle including at least one of a factory period, a transportation period, a driving period, a collision period, and a test period; determining a target suspension height corresponding to the target suspension operation mode; The height of the vehicle air suspension is adjusted according to the target suspension height.

2. The height adjustment method of the air suspension according to claim 1, characterized in that: The suspension operation mode includes at least one of a factory mode, a transport mode, a driving mode, a crash mode, and a test mode; When the target suspension operation mode is the driving mode, determining the target suspension height corresponding to the target suspension operation mode includes: In response to a sub-mode selection instruction, determining a target suspension operation sub-mode corresponding to the sub-mode selection instruction; determining a first suspension height corresponding to the target suspension operation sub-mode, and determining a target suspension height according to the first suspension height; The suspension operation sub-modes include: at least one of a default mode, an economic mode, a sports mode, an off-road mode, an entry mode, an access mode, a racing mode and a trailer mode.

3. The height adjustment method of the air suspension according to claim 2, characterized in that: When the target suspension operation sub-mode is a default mode or an economic mode, determining a first suspension height corresponding to the target suspension operation sub-mode includes: Acquire the current vehicle speed of the vehicle, and if the current vehicle speed is greater than or equal to the first vehicle speed, determine the first suspension height to be the fifth height; if the current vehicle speed is less than the first vehicle speed and greater than or equal to the second vehicle speed, determine the first suspension height to be the third height; if the current vehicle speed is less than the second vehicle speed and greater than or equal to the third vehicle speed, determine the first suspension height to be the second height; if the current vehicle speed is less than the third vehicle speed, determine the first suspension height to be the first height; or, In response to the input first height level selection instruction, determining a first height level corresponding to the first height level selection instruction; and determining a first suspension height corresponding to the first height level according to a preset correspondence between the height level and the suspension height; The suspension height includes any one of a first height, a second height, a third height, a fourth height, and a fifth height, and the first height < second height < third height < fourth height < fifth height.

4. The height adjustment method of the air suspension according to claim 3, characterized in that: When the target suspension operation sub-mode is a default mode, before determining the first suspension height corresponding to the target suspension operation sub-mode, the method further includes: Obtaining a second suspension height during the most recent operation of the vehicle; adjusting the air suspension of the vehicle to an initial state according to the second suspension height; After the current vehicle speed is acquired or the first height level selection instruction is received, the step of determining the first suspension height corresponding to the target suspension operation sub-mode is performed.

5. The height adjustment method of the air suspension according to claim 2, characterized in that: When the target suspension operation sub-mode is a sports mode or an off-road mode, determining a first suspension height corresponding to the target suspension operation sub-mode includes: Determining whether a second altitude level selection instruction is received within a preset time period after receiving the sub-mode selection instruction; If yes, determining the second height level corresponding to the second height level selection instruction; determining the first suspension height corresponding to the second height level according to the correspondence between the preset height level and the suspension height; If not, determining the first suspension height to be a third height; Among them, when the target suspension operation sub-mode is the sports mode, the second height level is the height level corresponding to the fourth height or the fifth height, and when the target suspension operation sub-mode is the off-road mode, the second height level is the first height or the height level corresponding to the second height; the first height < the second height < the third height < the fourth height < the fifth height.

6. The height adjustment method of the air suspension according to claim 2, characterized in that: When the target suspension operation mode is a factory mode, a collision mode, or a test mode, determining the target suspension height to be a third height; When the target suspension operation mode is the transport mode, determining the target suspension height to be a fourth height; When the target suspension operation sub-mode is a racing mode, determining the first suspension height to be a fifth height; When the target suspension operation sub-mode is a trailer mode, determining the first suspension height to be a third height; Among them, the third height ﹤ fourth height ﹤ fifth height.

7. The method for adjusting the height of an air suspension according to any one of claims 1 to 6, characterized in that: The step of adjusting the height of the vehicle air suspension according to the target suspension height includes: Determining a front axle adjustment height and a rear axle adjustment height according to a current height of the vehicle air suspension and the target suspension height; According to the axle adjustment height and the angle adjustment height of the front axle, sequentially adjusting the axle height and the angle height of the front axle, so as to adjust the front axle height of the air suspension to the target suspension height; According to the axle adjustment height and the angle adjustment height in the rear axle adjustment height, the axle height and the angle height of the rear axle are adjusted in sequence to adjust the rear axle height of the air suspension to the target suspension height.

8. The height adjustment method of the air suspension according to claim 2, characterized in that: When the target suspension operation mode is the entry mode, determining the target suspension height to be a sixth height; Accordingly, adjusting the height of the vehicle air suspension according to the target suspension height includes: adjusting the height of the left front axle of the air suspension to a sixth height; When the target suspension operation mode is the access mode, determining the target suspension height to be a sixth height; Accordingly, adjusting the height of the vehicle air suspension according to the target suspension height includes: adjusting the height of the air suspension rear axle to a sixth height; Among them, the first height﹤second height﹤third height﹤fourth height﹤fifth height﹤sixth height.

9. An electronic control unit ECU, characterized in that: include: A processor, and a memory communicatively connected to the processor; The memory is used to store computer-executable instructions; The processor is used to execute the computer-executable instructions stored in the memory to implement the height adjustment method of the air suspension according to any one of claims 1 to 8.

10. A vehicle, characterized in that: Comprising an electronic control unit as claimed in claim 9.

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