Air supply control method and system of closed air suspension system

Abstract

The invention discloses an air supply control method and system of a closed type air suspension system, and relates to the technical field of vehicle control, and the method comprises the following steps: when the real-time air quantity of the closed type air suspension system is smaller than a first set air quantity, issuing an air supply instruction, and performing air supply until the real-time air quantity is not smaller than the air quantity corresponding to the air supply instruction; when the real-time gas amount of the closed air suspension system is smaller than the first set gas amount and larger than the second set gas amount, the execution priority of the configuration height adjusting request is higher than that of the gas supplementing instruction; when the real-time gas amount of the closed air suspension system is smaller than the second set gas amount, a gas supplementing instruction is issued, gas supplementing is conducted till the real-time gas amount is not smaller than the gas amount corresponding to the gas supplementing instruction, and meanwhile the execution priority of the gas supplementing instruction is configured to be higher than that of the height adjusting request. The closed type air suspension system is supplemented with air in time, the situation that adjustment cannot be achieved due to air leakage is avoided, normal use of the closed type air suspension system is effectively guaranteed, and actual requirements are met.

Description

Technical Field

[0001] This application relates to the field of vehicle control technology, specifically to a method and system for controlling the replenishment of air in a closed air suspension system. Background Technology

[0002] Currently, most closed air suspension systems for vehicles adjust the air volume based on load changes, without considering situations where the load remains unchanged or air system leaks, which could prevent the air spring adjustment function from being realized. In such cases, traditional adjustment methods cannot meet actual needs.

[0003] To meet practical needs, a supplemental air control technology for a closed air suspension system is proposed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this application is to provide a method and system for controlling air replenishment in a closed air suspension system. This method employs a different technical principle from traditional adjustment methods to replenish air in the closed air suspension system in a timely manner, preventing situations where the system cannot be adjusted due to air leakage, effectively ensuring the normal use of the closed air suspension system, and meeting practical needs.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: In a first aspect, this application provides a method for controlling the air replenishment in a closed air suspension system, the method comprising the following steps: When the real-time gas quantity of the closed air suspension system of the target vehicle is less than the preset first set gas quantity, a replenishment command is issued to replenish the closed air suspension system until the real-time gas quantity of the closed air suspension system is not less than the gas quantity corresponding to the replenishment command. When the real-time gas quantity of the closed air suspension system of the target vehicle is less than the first set gas quantity but greater than the second set gas quantity, the execution priority is configured for the height adjustment request and the air replenishment command for the closed air suspension system, and the execution priority of the height adjustment request is higher than that of the air replenishment command. When the real-time gas quantity of the target vehicle's closed air suspension system is less than the second preset gas quantity, a replenishment command is issued to replenish the air suspension system until the real-time gas quantity of the closed air suspension system is not less than the gas quantity corresponding to the replenishment command. Simultaneously, execution priorities are configured for both the height adjustment request and the replenishment command for the closed air suspension system, with the replenishment command having a higher execution priority than the height adjustment request. The value of the first set gas quantity is greater than the value of the second set gas quantity.

[0006] Based on the above technical solution, the method further includes the following steps: Set the number of cycles for replenishing Qi; When the number of times the closed air suspension system is replenished with air is an integer multiple of the number of replenishment cycles, the amount of gas corresponding to the replenishment command is set to the third set amount of gas. When the number of times the closed air suspension system is replenished with air is not an integer multiple of the number of replenishment cycles, the amount of air corresponding to the replenishment command is set to the initial set amount of air for the closed air suspension system; wherein, The values ​​of the third set gas quantity, the initial set gas quantity of the closed air suspension system, the first set gas quantity, and the second set gas quantity decrease sequentially.

[0007] Based on the above technical solution, the method further includes the following steps: When the gas volume of the closed air suspension system is equal to the third set gas volume, and the real-time vehicle speed of the target vehicle is not lower than the preset first set vehicle speed, the vent valve of the closed air suspension system is opened to exhaust and backflush the desiccant corresponding to the closed air suspension system until the gas volume of the closed air suspension system is equal to the initial set gas volume of the closed air suspension system.

[0008] Based on the above technical solution, the method includes the following steps: The number of real-time air replenishment operations is recorded within one ignition cycle. When the number of real-time air replenishment operations exceeds the preset air replenishment limit, a fault alarm for the closed air suspension system is issued.

[0009] Based on the above technical solution, the value of the first set gas quantity is equal to 80% of the initial set gas quantity of the closed air suspension system; The value of the third set gas quantity is equal to 120% of the initial set gas quantity of the closed air suspension system; The value of the second set gas quantity is equal to 70% of the initial set gas quantity of the closed air suspension system.

[0010] Secondly, this application provides an air replenishment control system for a closed air suspension system, the system comprising: The first air replenishment execution module is used to issue an air replenishment command when the real-time air quantity of the closed air suspension system of the target vehicle is less than the preset first set air quantity, and replenish the air of the closed air suspension system until the real-time air quantity of the closed air suspension system is not less than the air quantity corresponding to the air replenishment command. The second air replenishment execution module is used to configure the execution priority of the height adjustment request and the air replenishment command for the closed air suspension system when the real-time gas quantity of the target vehicle's closed air suspension system is less than the first set gas quantity and greater than the second set gas quantity. The execution priority of the height adjustment request is higher than that of the air replenishment command. The third air replenishment execution module is used to issue an air replenishment command when the real-time air quantity of the closed air suspension system of the target vehicle is less than the second set air quantity, to replenish the air of the closed air suspension system until the real-time air quantity of the closed air suspension system is not less than the air quantity corresponding to the air replenishment command. At the same time, it configures the execution priority of the height adjustment request for the closed air suspension system and the air replenishment command, wherein the execution priority of the air replenishment command is higher than that of the height adjustment request. The value of the first set gas quantity is greater than the value of the second set gas quantity.

[0011] Based on the above technical solution, the system further includes: The cycle count setting module is used to set the number of cycles for gas replenishment. A gas quantity setting module is used to set the gas quantity corresponding to the air replenishment command to a third set gas quantity when the number of times the closed air suspension system is replenished with air is an integer multiple of the number of replenishment cycles. The gas quantity setting module is further configured to, when the number of times the closed air suspension system is replenished with air is not an integer multiple of the number of replenishment cycles, set the gas quantity corresponding to the replenishment command to the initial gas quantity set for the closed air suspension system; wherein, The values ​​of the third set gas quantity, the initial set gas quantity of the closed air suspension system, the first set gas quantity, and the second set gas quantity decrease sequentially.

[0012] Based on the above technical solution, the system further includes: The desiccant regeneration module is used to open the vent valve of the closed air suspension system to backflush the desiccant corresponding to the closed air suspension system when the gas volume of the closed air suspension system is equal to the third set gas volume and the real-time vehicle speed of the target vehicle is not lower than the preset first set vehicle speed, until the gas volume of the closed air suspension system is equal to the initial set gas volume of the closed air suspension system.

[0013] Based on the above technical solution, the system further includes: The fault alarm module is used to record the number of real-time air replenishment operations within one ignition cycle. When the number of real-time air replenishment operations exceeds the preset air replenishment limit, a fault alarm is issued for the closed air suspension system.

[0014] Based on the above technical solution, the value of the first set gas quantity is equal to 80% of the initial set gas quantity of the closed air suspension system; The value of the third set gas quantity is equal to 120% of the initial set gas quantity of the closed air suspension system; The value of the second set gas quantity is equal to 70% of the initial set gas quantity of the closed air suspension system.

[0015] Compared with the prior art, the advantages of this application are: This application employs a technical principle different from traditional adjustment methods to promptly replenish air in the closed air suspension system, preventing situations where adjustment is impossible due to air leakage, effectively ensuring the normal use of the closed air suspension system, and meeting actual needs.

[0016] Furthermore, by performing exhaust backflushing, the desiccant in the closed air suspension system is regenerated, preventing the desiccant from becoming saturated and unable to dry the air. Furthermore, the back-blowing function at a certain speed can prevent passengers from hearing the back-blowing noise, thus ensuring a better driving experience. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a hardware basic structure diagram of the air replenishment control method for a closed air suspension system according to an embodiment of this application. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] The embodiments of this application will be further described in detail below with reference to the accompanying drawings.

[0021] This application provides a method and system for controlling air replenishment in a closed air suspension system. It employs a technical principle different from traditional adjustment methods to replenish air in the closed air suspension system in a timely manner, avoiding situations where the system cannot be adjusted due to air leakage. This effectively ensures the normal use of the closed air suspension system and meets practical needs.

[0022] To achieve the aforementioned technical effects, the overall concept of this application is as follows: A method for controlling air replenishment in a closed air suspension system, the method comprising the following steps: S1. When the real-time gas quantity of the closed air suspension system of the target vehicle is less than the preset first set gas quantity, a replenishment command is issued to replenish the closed air suspension system until the real-time gas quantity of the closed air suspension system is not less than the gas quantity corresponding to the replenishment command. S2. When the real-time gas quantity of the closed air suspension system of the target vehicle is less than the first set gas quantity but greater than the second set gas quantity, configure the execution priority for the height adjustment request and the air replenishment command for the closed air suspension system. The execution priority of the height adjustment request is higher than that of the air replenishment command. S3. When the real-time gas quantity of the target vehicle's closed-loop air suspension system is less than the second preset gas quantity, a replenishment command is issued to replenish the air supply to the closed-loop air suspension system until the real-time gas quantity of the closed-loop air suspension system is not less than the gas quantity corresponding to the replenishment command. Simultaneously, execution priorities are configured for both the height adjustment request and the replenishment command targeting the closed-loop air suspension system, with the replenishment command having a higher execution priority than the height adjustment request. The value of the first set gas quantity is greater than the value of the second set gas quantity.

[0023] The embodiments of this application will be further described in detail below with reference to the accompanying drawings.

[0024] Firstly, see [the following] Figure 1 As shown in the figure, this application provides a method for controlling the air replenishment of a closed air suspension system, the method comprising the following steps: S1. When the real-time gas quantity of the closed air suspension system of the target vehicle is less than the preset first set gas quantity, a replenishment command is issued to replenish the closed air suspension system until the real-time gas quantity of the closed air suspension system is not less than the gas quantity corresponding to the replenishment command. S2. When the real-time gas quantity of the closed air suspension system of the target vehicle is less than the first set gas quantity but greater than the second set gas quantity, configure the execution priority for the height adjustment request and the air replenishment command for the closed air suspension system. The execution priority of the height adjustment request is higher than that of the air replenishment command. S3. When the real-time gas quantity of the target vehicle's closed-loop air suspension system is less than the second preset gas quantity, a replenishment command is issued to replenish the air supply to the closed-loop air suspension system until the real-time gas quantity of the closed-loop air suspension system is not less than the gas quantity corresponding to the replenishment command. Simultaneously, execution priorities are configured for both the height adjustment request and the replenishment command targeting the closed-loop air suspension system, with the replenishment command having a higher execution priority than the height adjustment request. The value of the first set gas quantity is greater than the value of the second set gas quantity.

[0025] In this embodiment, a technical principle different from the traditional adjustment method is adopted to replenish the closed air suspension system with air in a timely manner, so as to avoid the situation where it cannot be adjusted due to air leakage, effectively ensuring the normal use of the closed air suspension system and meeting actual needs.

[0026] Furthermore, the method also includes the following steps: A1. Set the number of cycles for replenishing Qi; A2. When the number of times the closed air suspension system is replenished with air is an integer multiple of the number of replenishment cycles, the amount of gas corresponding to the replenishment command is set to a third set amount of gas. A3. When the number of times the closed air suspension system is replenished with air is not an integer multiple of the number of replenishment cycles, the amount of gas corresponding to the replenishment command is set to the initial gas amount of the closed air suspension system; wherein, The values ​​of the third set gas quantity, the initial set gas quantity of the closed air suspension system, the first set gas quantity, and the second set gas quantity decrease sequentially.

[0027] Furthermore, the method also includes the following steps: B1. When the gas volume of the closed air suspension system is equal to the third set gas volume, and the real-time vehicle speed of the target vehicle is not lower than the preset first set vehicle speed, the vent valve of the closed air suspension system is opened to exhaust and backflush the desiccant corresponding to the closed air suspension system until the gas volume of the closed air suspension system is equal to the initial set gas volume of the closed air suspension system.

[0028] For example, setting the first set speed to 60km / h.

[0029] Furthermore, the method includes the following steps: C1. Record the number of real-time air replenishment operations within one ignition cycle. When the number of real-time air replenishment operations exceeds the preset air replenishment limit, issue a fault alarm for the closed air suspension system.

[0030] Furthermore, the value of the first set gas quantity is equal to 80% of the initial set gas quantity of the closed air suspension system; The value of the third set gas quantity is equal to 120% of the initial set gas quantity of the closed air suspension system; The value of the second set gas quantity is equal to 70% of the initial set gas quantity of the closed air suspension system.

[0031] In specific implementation, the technical solution based on the embodiments of this application is as follows: The first stage is pressure monitoring. Using the pressure sensors in the closed air suspension system, the corresponding solenoid valves are opened to detect the pressure of the air springs and air tanks. The specific process for detecting the pressure of the air springs and air tanks is as follows: (1) Perform a pressure check when the vehicle is powered on; (2) Perform a pressure check after periodic wake-up; (3) Perform a pressure check when exiting maintenance mode.

[0032] In the second stage, the air volume of the closed air suspension system is calculated to determine whether the air volume of the closed air suspension system meets the conditions for adjusting the air spring function.

[0033] First, calculate the gas volume immediately after the pressure check; (1) When the vehicle is powered on, a pressure inspection is performed to determine whether the air volume of the closed air suspension system meets the conditions for air spring function adjustment under the power-on cycle.

[0034] (2) Perform a pressure check after periodic wake-up to determine whether the air volume of the closed air suspension system meets the conditions for periodic wake-up leveling function during periodic wake-up.

[0035] (3) When exiting the maintenance mode, perform a pressure check to determine whether the air volume of the closed air suspension system meets the conditions for air spring function adjustment after vehicle maintenance.

[0036] Second, after the height sensor is calibrated, the air volume is calculated based on the pressure value stored after calibration and adjustment. This is used to determine whether the air volume of the closed air suspension system meets the conditions for air spring function adjustment after the production line is completed.

[0037] Specifically, the technical details of the embodiments of this application are as follows: According to the gas law PV=nRT, the gas quantity n=PV / RT is calculated, where P is the pressure in Pa, V is the volume in m³, n is the mol, R is the ideal gas constant 8.314 J / (mol*K), and T is the thermodynamic temperature in K.

[0038] The need for additional air is determined based on the calculated air volume, where n0 is the air volume of the closed air suspension system under design conditions. When the gas quantity n < 80%n0 (calibrable), the closed air suspension system controls the closed air supply unit to replenish the system with gas; When the gas volume is 70%n0 (calibrable) ≤ n ≤ 80%n0 (calibrable), the altitude adjustment request is prioritized, and gas replenishment is performed after the altitude adjustment is completed. When the gas volume n < 70%n0 (calibrable), gas replenishment is prioritized, and altitude adjustment is performed only after the gas replenishment is complete; if adjustment is not possible, a pop-up prompt will be displayed.

[0039] In the event of slow air leakage, if the air replenishment control strategy is triggered twice (which can be calibrated) in one ignition cycle, a fault light alarm and a pop-up window will be displayed, reminding the user to bring the system in for inspection to check if it is functioning properly.

[0040] When the closed air suspension system needs additional air, inflate it to 120% of its rated capacity. Desiccant regeneration: After the system is replenished with gas, exhaust backflushing is performed to remove the moisture from the desiccant, thus regenerating the desiccant.

[0041] After the closed-loop air suspension system replenishes air to n0 three times (which can be calibrated), the fourth replenishment will bring the air volume to 120% of n0, preparing for the desiccant regeneration function. The closed-loop air suspension system only replenishes air to the air tank, and then adds air to the air springs to reach the threshold.

[0042] When the system is inflated to 120% n0, the vent valve is immediately opened when the vehicle speed reaches a certain threshold (e.g., 60 km / h) to allow exhaust backflushing, removing moisture from the desiccant and regenerating it. At this time, the road noise and wind noise from the high vehicle speed mask the noise generated by the exhaust backflushing.

[0043] The closed air suspension system controls the closed air supply unit to backflush the exhaust air until the air volume is n0, then closes the vent valve to stop the exhaust air.

[0044] In summary, the technical advantages of the embodiments of this application are as follows: When insufficient air volume is detected in the closed air suspension system, the air spring closed system will replenish the air in time to ensure normal air suspension function and avoid user complaints caused by the system being unable to adjust or adjusting too slowly. The closed air suspension system enables desiccant regeneration, preventing the desiccant from becoming saturated and unable to dry the air, thus avoiding damage to the closed air suspension system and losses to users. The backflush of the desiccant can be very noisy. The road noise and wind noise from high vehicle speeds are used to mask the noise generated by the exhaust backflush, thus avoiding user complaints.

[0045] Secondly, embodiments of this application provide an air replenishment control system for a closed air suspension system, the system comprising: The first air replenishment execution module is used to issue an air replenishment command when the real-time air quantity of the closed air suspension system of the target vehicle is less than the preset first set air quantity, and replenish the air of the closed air suspension system until the real-time air quantity of the closed air suspension system is not less than the air quantity corresponding to the air replenishment command. The second air replenishment execution module is used to configure the execution priority of the height adjustment request and the air replenishment command for the closed air suspension system when the real-time gas quantity of the target vehicle's closed air suspension system is less than the first set gas quantity and greater than the second set gas quantity. The execution priority of the height adjustment request is higher than that of the air replenishment command. The third air replenishment execution module is used to issue an air replenishment command when the real-time air quantity of the closed air suspension system of the target vehicle is less than the second set air quantity, to replenish the air of the closed air suspension system until the real-time air quantity of the closed air suspension system is not less than the air quantity corresponding to the air replenishment command. At the same time, it configures the execution priority of the height adjustment request for the closed air suspension system and the air replenishment command, wherein the execution priority of the air replenishment command is higher than that of the height adjustment request. The value of the first set gas quantity is greater than the value of the second set gas quantity.

[0046] In this embodiment, a technical principle different from the traditional adjustment method is adopted to replenish the closed air suspension system with air in a timely manner, so as to avoid the situation where it cannot be adjusted due to air leakage, effectively ensuring the normal use of the closed air suspension system and meeting actual needs.

[0047] Furthermore, the system also includes: The cycle count setting module is used to set the number of cycles for gas replenishment. A gas quantity setting module is used to set the gas quantity corresponding to the air replenishment command to a third set gas quantity when the number of times the closed air suspension system is replenished with air is an integer multiple of the number of replenishment cycles. The gas quantity setting module is further configured to, when the number of times the closed air suspension system is replenished with air is not an integer multiple of the number of replenishment cycles, set the gas quantity corresponding to the replenishment command to the initial gas quantity set for the closed air suspension system; wherein, The values ​​of the third set gas quantity, the initial set gas quantity of the closed air suspension system, the first set gas quantity, and the second set gas quantity decrease sequentially.

[0048] Furthermore, the system also includes: The desiccant regeneration module is used to open the vent valve of the closed air suspension system to backflush the desiccant corresponding to the closed air suspension system when the gas volume of the closed air suspension system is equal to the third set gas volume and the real-time vehicle speed of the target vehicle is not lower than the preset first set vehicle speed, until the gas volume of the closed air suspension system is equal to the initial set gas volume of the closed air suspension system.

[0049] Furthermore, the system also includes: The fault alarm module is used to record the number of real-time air replenishment operations within one ignition cycle. When the number of real-time air replenishment operations exceeds the preset air replenishment limit, a fault alarm is issued for the closed air suspension system.

[0050] Furthermore, the value of the first set gas quantity is equal to 80% of the initial set gas quantity of the closed air suspension system; The value of the third set gas quantity is equal to 120% of the initial set gas quantity of the closed air suspension system; The value of the second set gas quantity is equal to 70% of the initial set gas quantity of the closed air suspension system.

[0051] In specific implementation, the technical solution based on the embodiments of this application is as follows: The first stage is pressure monitoring. Using the pressure sensors in the closed air suspension system, the corresponding solenoid valves are opened to detect the pressure of the air springs and air tanks. The specific process for detecting the pressure of the air springs and air tanks is as follows: (1) Perform a pressure check when the vehicle is powered on; (2) Perform a pressure check after periodic wake-up; (3) Perform a pressure check when exiting maintenance mode.

[0052] In the second stage, the air volume of the closed air suspension system is calculated to determine whether the air volume of the closed air suspension system meets the conditions for adjusting the air spring function.

[0053] First, calculate the gas volume immediately after the pressure check; (1) When the vehicle is powered on, a pressure inspection is performed to determine whether the air volume of the closed air suspension system meets the conditions for air spring function adjustment under the power-on cycle.

[0054] (2) Perform a pressure check after periodic wake-up to determine whether the air volume of the closed air suspension system meets the conditions for periodic wake-up leveling function during periodic wake-up.

[0055] (3) When exiting the maintenance mode, perform a pressure check to determine whether the air volume of the closed air suspension system meets the conditions for air spring function adjustment after vehicle maintenance.

[0056] Second, after the height sensor is calibrated, the air volume is calculated based on the pressure value stored after calibration and adjustment. This is used to determine whether the air volume of the closed air suspension system meets the conditions for air spring function adjustment after the production line is completed.

[0057] Specifically, the technical details of the embodiments of this application are as follows: According to the gas law PV=nRT, the gas quantity n=PV / RT is calculated, where P is the pressure in Pa, V is the volume in m³, n is the mol, R is the ideal gas constant 8.314 J / (mol*K), and T is the thermodynamic temperature in K.

[0058] The need for additional air is determined based on the calculated air volume, where n0 is the air volume of the closed air suspension system under design conditions. When the gas quantity n < 80%n0 (calibrable), the closed air suspension system controls the closed air supply unit to replenish the system with gas; When the gas volume is 70%n0 (calibrable) ≤ n ≤ 80%n0 (calibrable), the altitude adjustment request is prioritized, and gas replenishment is performed after the altitude adjustment is completed. When the gas volume n < 70%n0 (calibrable), gas replenishment is prioritized, and altitude adjustment is performed only after the gas replenishment is complete; if adjustment is not possible, a pop-up prompt will be displayed.

[0059] In the event of slow air leakage, if the air replenishment control strategy is triggered twice (which can be calibrated) in one ignition cycle, a fault light alarm and a pop-up window will be displayed, reminding the user to bring the system in for inspection to check if it is functioning properly.

[0060] When the closed air suspension system needs additional air, inflate it to 120% of its rated capacity. Desiccant regeneration: After the system is replenished with gas, exhaust backflushing is performed to remove the moisture from the desiccant, thus regenerating the desiccant.

[0061] After the closed-loop air suspension system replenishes air to n0 three times (which can be calibrated), the fourth replenishment will bring the air volume to 120% of n0, preparing for the desiccant regeneration function. The closed-loop air suspension system only replenishes air to the air tank, and then adds air to the air springs to reach the threshold.

[0062] When the system is inflated to 120% n0, the vent valve is immediately opened when the vehicle speed reaches a certain threshold (e.g., 60 km / h) to allow exhaust backflushing, removing moisture from the desiccant and regenerating it. At this time, the road noise and wind noise from the high vehicle speed mask the noise generated by the exhaust backflushing.

[0063] The closed air suspension system controls the closed air supply unit to backflush the exhaust air until the air volume is n0, then closes the vent valve to stop the exhaust air.

[0064] In summary, the technical advantages of the embodiments of this application are as follows: When insufficient air volume is detected in the closed air suspension system, the air spring closed system will replenish the air in time to ensure normal air suspension function and avoid user complaints caused by the system being unable to adjust or adjusting too slowly. The closed air suspension system enables desiccant regeneration, preventing the desiccant from becoming saturated and unable to dry the air, thus avoiding damage to the closed air suspension system and losses to users. The backflush of the desiccant can be very noisy. The road noise and wind noise from high vehicle speeds are used to mask the noise generated by the exhaust backflush, thus avoiding user complaints.

[0065] In summary, the air replenishment control system for the closed air suspension system provided in this application embodiment is technically the same as the air replenishment control method for the closed air suspension system provided in the first aspect in terms of technical issues, technical solutions, and technical effects, so it will not be described in detail here.

[0066] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the system or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0067] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0068] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for controlling air replenishment in a closed air suspension system, characterized in that, The method includes the following steps: When the real-time gas quantity of the closed air suspension system of the target vehicle is less than the preset first set gas quantity, a replenishment command is issued to replenish the closed air suspension system until the real-time gas quantity of the closed air suspension system is not less than the gas quantity corresponding to the replenishment command. When the real-time gas quantity of the closed air suspension system of the target vehicle is less than the first set gas quantity but greater than the second set gas quantity, the execution priority is configured for the height adjustment request and the air replenishment command for the closed air suspension system, and the execution priority of the height adjustment request is higher than that of the air replenishment command. When the real-time gas quantity of the target vehicle's closed air suspension system is less than the second preset gas quantity, a replenishment command is issued to replenish the air suspension system until the real-time gas quantity of the closed air suspension system is not less than the gas quantity corresponding to the replenishment command. Simultaneously, execution priorities are configured for both the height adjustment request and the replenishment command for the closed air suspension system, with the replenishment command having a higher execution priority than the height adjustment request. The value of the first set gas quantity is greater than the value of the second set gas quantity.

2. The air replenishment control method for a closed air suspension system as described in claim 1, characterized in that, The method further includes the following steps: Set the number of cycles for replenishing Qi; When the number of times the closed air suspension system is replenished with air is an integer multiple of the number of replenishment cycles, the amount of gas corresponding to the replenishment command is set to the third set amount of gas. When the number of times the closed air suspension system is replenished with air is not an integer multiple of the number of replenishment cycles, the amount of air corresponding to the replenishment command is set to the initial set amount of air for the closed air suspension system; wherein, The values ​​of the third set gas quantity, the initial set gas quantity of the closed air suspension system, the first set gas quantity, and the second set gas quantity decrease sequentially.

3. The air replenishment control method for a closed air suspension system as described in claim 2, characterized in that, The method further includes the following steps: When the gas volume of the closed air suspension system is equal to the third set gas volume, and the real-time vehicle speed of the target vehicle is not lower than the preset first set vehicle speed, the vent valve of the closed air suspension system is opened to exhaust and backflush the desiccant corresponding to the closed air suspension system until the gas volume of the closed air suspension system is equal to the initial set gas volume of the closed air suspension system.

4. The air replenishment control method for a closed air suspension system as described in claim 1, characterized in that, The method includes the following steps: The number of real-time air replenishment operations is recorded within one ignition cycle. When the number of real-time air replenishment operations exceeds the preset air replenishment limit, a fault alarm for the closed air suspension system is issued.

5. The air replenishment control method for a closed air suspension system as described in claim 2, characterized in that: The value of the first set gas quantity is equal to 80% of the initial set gas quantity of the closed air suspension system; The value of the third set gas quantity is equal to 120% of the initial set gas quantity of the closed air suspension system; The value of the second set gas quantity is equal to 70% of the initial set gas quantity of the closed air suspension system.

6. A supplemental air control system for a closed air suspension system, characterized in that, The system includes: The first air replenishment execution module is used to issue an air replenishment command when the real-time air quantity of the closed air suspension system of the target vehicle is less than the preset first set air quantity, and replenish the air of the closed air suspension system until the real-time air quantity of the closed air suspension system is not less than the air quantity corresponding to the air replenishment command. The second air replenishment execution module is used to configure the execution priority of the height adjustment request and the air replenishment command for the closed air suspension system when the real-time gas quantity of the target vehicle's closed air suspension system is less than the first set gas quantity and greater than the second set gas quantity. The execution priority of the height adjustment request is higher than that of the air replenishment command. The third air replenishment execution module is used to issue an air replenishment command when the real-time air quantity of the closed air suspension system of the target vehicle is less than the second set air quantity, to replenish the air of the closed air suspension system until the real-time air quantity of the closed air suspension system is not less than the air quantity corresponding to the air replenishment command. At the same time, it configures the execution priority of the height adjustment request for the closed air suspension system and the air replenishment command, wherein the execution priority of the air replenishment command is higher than that of the height adjustment request. The value of the first set gas quantity is greater than the value of the second set gas quantity.

7. The air replenishment control system for the closed air suspension system as described in claim 6, characterized in that, The system also includes: The cycle count setting module is used to set the number of cycles for gas replenishment. A gas quantity setting module is used to set the gas quantity corresponding to the air replenishment command to a third set gas quantity when the number of times the closed air suspension system is replenished with air is an integer multiple of the number of replenishment cycles. The gas quantity setting module is further configured to, when the number of times the closed air suspension system is replenished with air is not an integer multiple of the number of replenishment cycles, set the gas quantity corresponding to the replenishment command to the initial gas quantity set for the closed air suspension system; wherein, The values ​​of the third set gas quantity, the initial set gas quantity of the closed air suspension system, the first set gas quantity, and the second set gas quantity decrease sequentially.

8. The air replenishment control system for the closed air suspension system as described in claim 7, characterized in that, The system also includes: The desiccant regeneration module is used to open the vent valve of the closed air suspension system to backflush the desiccant corresponding to the closed air suspension system when the gas volume of the closed air suspension system is equal to the third set gas volume and the real-time vehicle speed of the target vehicle is not lower than the preset first set vehicle speed, until the gas volume of the closed air suspension system is equal to the initial set gas volume of the closed air suspension system.

9. The air replenishment control system for the closed air suspension system as described in claim 6, characterized in that, The system also includes: The fault alarm module is used to record the number of real-time air replenishment operations within one ignition cycle. When the number of real-time air replenishment operations exceeds the preset air replenishment limit, a fault alarm is issued for the closed air suspension system.

10. The air replenishment control system for the closed air suspension system as described in claim 7, characterized in that: The value of the first set gas quantity is equal to 80% of the initial set gas quantity of the closed air suspension system; The value of the third set gas quantity is equal to 120% of the initial set gas quantity of the closed air suspension system; The value of the second set gas quantity is equal to 70% of the initial set gas quantity of the closed air suspension system.

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