Air suspension system and vehicle

Abstract

This application provides an air suspension system and vehicle, including an air reservoir assembly, an air compressor assembly, an external air intake assembly, and an air spring assembly. The air reservoir assembly includes a first air tank and a second air tank. The first air tank is connected to the air compressor assembly, and the second air tank is connected to the air spring assembly. The air compressor assembly is connected to the second air tank, the air spring assembly, and the external air intake assembly. When inflating the air spring assembly, the air compressor assembly can be deactivated, with inflation directly from the second air tank, or the first air tank can inflate the air spring assembly via the air compressor assembly. This reduces the operating frequency of the air compressor assembly, which helps to reduce the temperature rise and noise of the air suspension system and improves the service life of the air compressor assembly.

Description

Technical Field

[0001] This application relates to the field of air suspension technology, and more specifically, to an air suspension system and vehicle. Background Technology

[0002] The automotive suspension system is a crucial component of a car. Its primary function is to transmit forces and torques between the wheels and the chassis, and to cushion the impact forces transmitted from uneven road surfaces to the chassis or body, damping the resulting vibrations to ensure a smooth ride and improve vehicle stability and comfort. Air suspension, due to its superior performance, such as adjustable stiffness and damping, is widely used in various vehicles.

[0003] However, current automotive suspension systems only have one air tank, relying on a compressor to transfer gas between the air tank and the air spring. This means that the compressor needs to work intermittently or even continuously, resulting in the system temperature rising too quickly, loud noise, and high power consumption. Utility Model Content

[0004] The purpose of this application is to provide an air suspension system and vehicle, which uses two air tanks, and the air compressor assembly can be deactivated, thereby reducing the operating frequency of the air compressor assembly, which helps to reduce system temperature rise and noise, and improve compressor life.

[0005] In a first aspect, embodiments of this application provide an air suspension system, including: an air storage assembly, an air compression assembly, an external air intake assembly, an air spring assembly, and a valve body assembly. The air storage assembly includes a first air tank and a second air tank. The valve body assembly includes a first control valve, a second control valve, a third control valve, and a fourth control valve. The first air tank is connected to the air compression assembly via the first control valve. The second air tank is connected to the air spring assembly via the third control valve. The air compression assembly is connected to the second air tank, the air spring assembly, and the external air intake assembly. One end of the second control valve is connected to the air passage between the first control valve and the first air tank. One end of the fourth control valve is connected to the air passage between the air compression assembly and the second control valve.

[0006] In the above implementation process, the first air tank and the second air tank are respectively connected to the air compressor assembly, and the air compressor assembly and the second air tank are respectively connected to the air spring assembly. This allows the air compressor assembly to be inflated without working, and the second air tank to directly inflate the air spring assembly. Alternatively, in the lowering mode, the air compressor assembly is inactive, and the gas in the air spring assembly enters the first air tank. This reduces the operating frequency of the air compressor assembly, which helps to reduce the temperature rise and noise of the air suspension system and improves the service life of the air compressor assembly.

[0007] Furthermore, the entire air suspension system's valve assembly only uses four valve bodies: the first control valve, the second control valve, the third control valve, and the fourth control valve. This reduces the system's complexity, requires less space, and lowers costs.

[0008] In some embodiments, the air suspension system has multiple modes; wherein

[0009] In ascending mode, the air pressure in the second air tank is sufficient to support the ascent, the air compression assembly does not work, and the second air tank is connected to the air spring assembly;

[0010] In descent mode, when the air pressure in the first air tank is sufficient to meet the descent time requirement, the air compression assembly does not operate, and the gas in the air spring assembly enters the first air tank.

[0011] In some embodiments, in the external supplementation mode, the air compression assembly is connected to the first air tank, and the first air tank is connected to the second air tank, wherein the air compression assembly pumps gas entering the external air intake assembly into the first air tank, and the gas in the first air tank flows to the second air tank or the air spring assembly; or the air compression assembly is connected to the second air tank, wherein the air compression assembly pumps gas entering the external air intake assembly into the second air tank.

[0012] In the above process, when the system is in external supplementation mode, the air compressor assembly can supply outside air into the first air tank. Then, through pressure division, the first air tank supplies gas into the second air tank. The whole process can reduce the workload of the air compressor assembly, thereby improving the working stability and efficiency of the air compressor assembly, and also improving NVH performance. Of course, the air compressor assembly can also directly supply air to the second air tank, realizing multiple ways of air supply and reducing the working frequency of the air compressor assembly.

[0013] In some embodiments, in the rising mode, when the air pressure in the second air tank is insufficient, the air compression assembly operates, and the air compression assembly pumps the gas in the first air tank into the second air tank and / or the air spring assembly.

[0014] In some embodiments, the first gas storage tank includes a low-pressure tank, and the second gas storage tank includes a high-pressure tank.

[0015] In the process described above, by setting up low-pressure and high-pressure tanks in the system, the air compressor assembly can be deactivated, reducing the operating frequency of the air compressor assembly. This helps to reduce the temperature rise and noise of the air suspension system and improves the service life of the air compressor assembly.

[0016] In some embodiments, the air suspension system further includes a first air passage, which is connected to the air compressor assembly and the first air tank, respectively, and the first control valve is connected to the first air passage.

[0017] In the above implementation process, the first control valve is set in the first air passage and can be used to control the opening and closing of the first air passage, enabling use under multiple operating conditions, reducing the system layout space and lowering the cost.

[0018] In some embodiments, the air suspension system further includes a second air passage, one end of which is connected to the first air passage between the first control valve and the first air tank, and the other end of which is connected to the air spring assembly.

[0019] In the above implementation process, the second control valve is set in the second air passage and can be used to control the opening and closing of the second air passage, enabling use under multiple operating conditions, reducing the system layout space and lowering the cost.

[0020] In some embodiments, the air suspension system further includes a third air passage, one end of which is connected to a second air tank and the other end of which is connected to the air compression assembly, and the third control valve is connected to the third air passage.

[0021] In the above implementation process, the third control valve is set in the third air passage, which can be used to control the opening and closing of the third air passage, realize the use of multiple operating conditions, reduce the system layout space, and lower the cost.

[0022] In some embodiments, the air suspension system further includes a fourth air passage and a dryer, the dryer being connected to the third air passage, the fourth air passage being connected between the dryer and the air compression assembly, and the fourth control valve being connected to the fourth air passage.

[0023] In the above implementation process, the fourth control valve is set in the fourth air circuit and the dryer is set in the third air circuit. This not only enables the use of multiple operating conditions, reduces the system layout space, and lowers the cost, but also allows the dryer to effectively prevent moisture and impurities in the air from affecting the air suspension system, such as corrosion and freezing, thereby improving the performance and service life of the air suspension system. At the same time, the air suspension system can also backflush the dryer to prevent impurities from entering the valve core.

[0024] In some embodiments, the air suspension system further includes a sensor connected to the second air path. This sensor can be used to monitor pressure, facilitating system air replenishment and fault reporting.

[0025] In some embodiments, the external air intake assembly includes a filter and a one-way valve, the filter being connected to the one-way valve, and the one-way valve being connected to the air passage between the air compression assembly and the first air tank.

[0026] In some embodiments, the air spring assembly includes an air spring assembly and a solenoid valve assembly, the solenoid valve assembly being connected to the air spring assembly.

[0027] In the above process, the solenoid valve assembly can control the gas to enter or exit the air spring assembly, thereby realizing the rise or fall of the air spring assembly to meet the needs of different working conditions.

[0028] Secondly, this application also provides a vehicle including an air suspension system as described in any of the preceding claims.

[0029] Since the vehicle provided in the second aspect includes an air suspension system, the vehicle has all the technical effects of an air suspension system, which will not be elaborated here.

[0030] Other features and advantages of this application will be set forth in the following description, or some features and advantages may be inferred from the description or determined without doubt, or may be learned by practicing the above-described techniques of this application.

[0031] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the air suspension system provided in the embodiments of this application;

[0034] Figure 2 A schematic diagram illustrating the principle of the lifting mode of the air suspension system provided in this application embodiment;

[0035] Figure 3 A schematic diagram illustrating the principle of the descent mode of the air suspension system provided in this application embodiment;

[0036] Figure 4 This is a schematic diagram illustrating the principle of the external supplement mode of the air suspension system provided in the embodiments of this application.

[0037] Figure Labels

[0038] 10. Air storage assembly; 101. First air storage tank; 102. Second air storage tank; 20. Air compression assembly; 30. External air intake assembly; 301. Filter; 302. One-way valve; 40. Air spring assembly; 401. Air spring; 402. Air solenoid valve; 50. First air path; 51. First control valve; 60. Second air path; 61. Second control valve; 70. Third air path; 71. Third control valve; 80. Fourth air path; 81. Dryer; 82. Fourth control valve; 90. Safety valve; 100. Sensor. Detailed Implementation

[0039] 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, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0040] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0041] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or a point connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0042] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0043] Example

[0044] Most cars on the market use air suspension systems to change the vehicle height and adjust the stiffness or damping of the suspension, thereby improving driving comfort. The air supply part of the air suspension system consists of a compressor, an air tank, and multiple air springs. The compressor is connected to the air tank and multiple air springs through pipelines. The compressor inflates or deflates air into the air tank or air springs. The higher the internal air pressure of the air spring, the greater the spring stiffness, and the lower the internal air pressure of the air spring, the smaller the spring stiffness.

[0045] like Figure 1 As shown, in this application, in a first aspect, an embodiment of this application provides an air suspension system, including: an air compressor assembly 20, an air storage assembly 10, and an air spring assembly 40, etc. The air compressor assembly 20 is connected to the air storage assembly 10 and the air spring assembly 40 respectively. The air storage assembly 10 is provided with two tanks, and the air spring assembly 40 can be inflated or deflated by controlling the two tanks.

[0046] Specifically, such as Figure 1 As shown, the air suspension system includes an air storage assembly 10, an air compression assembly 20, an external air intake assembly 30, and an air spring assembly 40. The air storage assembly 10 includes a first air tank 101 and a second air tank 102. The first air tank 101 is connected to the air compression assembly 20, and the second air tank 102 is connected to the air spring assembly 40. The air compression assembly 20 is connected to the second air tank 102, the air spring assembly 40, and the external air intake assembly 30, respectively.

[0047] For example, the external air intake assembly 30 is connected to the atmosphere, the air compression assembly 20 is connected to the external air intake assembly 30, and the first air tank 101 and the second air tank 102 of the air storage assembly 10 are both connected to the air compression assembly 20. After the air suspension system distributes the air path, the air spring assembly 40 can be raised by inflation or lowered by deflation. In this way, the air spring assembly 40 can be inflated or deflated to achieve the raising and lowering of the vehicle. The air spring assembly 40 can be inflated in two ways: one is through the air storage assembly 10, and the other is through the external air intake assembly 30.

[0048] The air compression assembly 20 includes a compressor, which can be used for gas transportation. It is a machine that transports gas by compressing the gas and increasing the gas pressure. The air storage assembly 10 includes a first air storage tank 101 and a second air storage tank 102. There is a pressure difference between the gas inside the first air storage tank 101 and the second air storage tank 102. For example, the first air storage tank 101 bears a lower pressure and is suitable for storing low-pressure gas, while the second air storage tank 102 bears a higher pressure and is suitable for storing high-pressure gas. The air spring assembly 40 can be used as a core component of the vehicle suspension. It is a spring that uses gas as an elastic medium. Its main principle is to use the reaction force of the compression inside the rubber air bladder as an elastic restoring force.

[0049] In the above implementation process, the first air tank 101 and the second air tank 102 are respectively connected to the air compressor assembly 20, and the air compressor assembly 20 and the second air tank 102 are respectively connected to the air spring assembly 40. This allows the air compressor assembly 20 to be inactive when the air spring assembly 40 is being inflated, with the second air tank 102 directly inflating it, or the first air tank 101 inflating the air spring assembly 40 through the air compressor assembly 20. This reduces the operating frequency of the air compressor assembly 20, which helps to reduce the temperature rise and noise of the air suspension system and improves the service life of the air compressor assembly 20.

[0050] Please refer to again Figure 1 In the external supplementation mode, the air compression assembly 20 is connected to the first air tank 101, and the first air tank 101 is connected to the second air tank 102.

[0051] Alternatively, the air compression assembly 20 may be connected to the second air tank 102.

[0052] For example, under this operating condition, the air compression assembly 20 compresses air from the atmosphere through the external air intake assembly 30, and then delivers it to the first air tank 101, and then supplies it to the second air tank 102 and / or the air spring assembly 40, thereby inflating the second air tank 102 or the air spring assembly 40.

[0053] In the above implementation process, when the system is in external supplementation mode, the air compressor assembly 20 can supply outside air into the first air tank 101. Then, through pressure division, the first air tank 101 supplies gas into the second air tank 102. The whole process can reduce the workload of the air compressor assembly 20, thereby improving the working stability and efficiency of the air compressor assembly 20, and also improving NVH performance. Of course, the air compressor assembly 20 can also directly supply air to the second air tank 102, realizing multiple ways of air supply and reducing the working frequency of the air compressor assembly 20.

[0054] In some embodiments, the first gas storage tank 101 includes a low-pressure tank, and the second gas storage tank 102 includes a high-pressure tank. That is, the gas pressure stored in the first gas storage tank 101 is less than the gas pressure stored in the second gas storage tank 102. The first gas storage tank 101 is connected to the air inlet of the air compression assembly 20, and the second gas storage tank 102 is connected to the air outlet of the air compression assembly 20.

[0055] In the above implementation process, by setting up low-pressure tanks and high-pressure tanks in the system, the air compressor assembly 20 can be shut down, reducing the operating frequency of the air compressor assembly 20, which helps to reduce the temperature rise and noise of the air suspension system and improves the service life of the air compressor assembly 20.

[0056] In some embodiments, the air suspension system further includes a first air passage 50 and a first control valve 51. The first air passage 50 is connected to the air intake end of the air compression assembly 20 and the first air tank 101, respectively. The first control valve 51 is connected to the first air passage 50. The first control valve 51 includes a two-position two-way valve. Its main working principle is to control the opening and closing of the valve by electromagnetic force, thereby controlling the flow of gas. The first control valve 51 has a simple structure, reliable operation, and can be used to control complex processes.

[0057] In the above implementation process, the first control valve 51 is set in the first air passage 50 and can be used to control the opening and closing of the first air passage 50, realize the use of multiple working conditions, reduce the system layout space, and lower the cost.

[0058] In some embodiments, the air suspension system further includes a second air passage 60 and a second control valve 61. One end of the second air passage 60 is connected to the first air passage 50 between the first control valve 51 and the first air tank 101, and the other end is connected to the air spring assembly 40. The second control valve 61 includes a two-position two-way valve. Its main working principle is to control the opening and closing of the valve by electromagnetic force, thereby controlling the flow of gas. The second control valve 61 has a simple structure, reliable operation, and can be used to control complex processes.

[0059] In the above implementation process, the second control valve 61 is set in the second air passage 60 and can be used to control the opening and closing of the second air passage 60 to realize the use of multiple working conditions, reduce the system layout space, and lower the cost.

[0060] In some embodiments, the air suspension system further includes a third air passage 70 and a third control valve 71. One end of the third air passage 70 is connected to the second air tank 102, and the other end is connected to the air compression assembly 20. The third control valve 71 is connected to the third air passage 70. The third control valve 71 includes a two-position two-way valve. Its main working principle is to control the opening and closing of the valve by electromagnetic force, thereby controlling the flow of gas. The third control valve 71 has a simple structure, reliable operation, and can be used to control complex processes.

[0061] In the above implementation process, the third control valve 71 is installed in the third air passage 70 and can be used to control the opening and closing of the third air passage 70, enabling use under multiple operating conditions, reducing the system layout space and lowering the cost.

[0062] In some embodiments, the air suspension system further includes a fourth air passage 80, a dryer 81, and a fourth control valve 82. The dryer 81 is connected to the third air passage 70, the fourth air passage 80 is connected between the dryer 81 and the air compression assembly 20, and the fourth control valve 82 is connected to the fourth air passage 80. The fourth control valve 82 includes a two-position two-way valve. Its main working principle is to control the opening and closing of the valve by electromagnetic force, thereby controlling the flow of gas. The fourth control valve 82 has a simple structure, reliable operation, and can be used to control complex processes.

[0063] It is understandable that the first control valve 51, the second control valve 61, the third control valve 71 and the fourth control valve 82 are all two-position two-way valves. Compared with the current market system, which uses more two-position two-way valves or combinations of several two-position three-way valves and several two-position two-way valves than the two-position three-way valve, the two-position three-way valve has a more complex structure and higher cost than the two-position two-way valve. The valve body of the control air circuit of this application has only four valves, so the required layout space is smaller and the cost is lower.

[0064] In the above implementation process, the fourth control valve 82 is set in the fourth air passage 80, and the dryer 81 is set in the third air passage 70. This not only enables the use of multiple operating conditions, reduces the system layout space, and lowers the cost, but also allows the dryer 81 to effectively prevent moisture and impurities in the air from affecting the air suspension system, such as corrosion and freezing, thereby improving the performance and service life of the air suspension system. At the same time, the air suspension system can also backflush the dryer 81 to prevent impurities from entering the valve core.

[0065] In some embodiments, the air suspension system further includes a sensor 100 connected to a second air passage 60. The sensor 100 includes a differential pressure sensor. When it is necessary to test the pressure value of a certain air spring 401, simply open the corresponding air solenoid valve 402 to open the second air passage 60, and use the sensor 100 for monitoring. This allows for pressure monitoring, facilitating system air replenishment and fault reporting.

[0066] In some embodiments, the external air intake assembly 30 includes a filter 301 and a one-way valve 302. The filter 301 is connected to the one-way valve 302, and the one-way valve 302 is connected to the air passage between the air compression assembly 20 and the first air tank 101.

[0067] Of course, the air suspension system also includes a safety valve 90. The air outlet of the air compressor assembly 20 is connected to the air inlet and air outlet of the one-way valve 302 through the safety valve 90. With the safety valve 90, when the internal pressure of the air suspension system is too high, the safety valve 90 will play a role to prevent the internal components of the air suspension system from being damaged due to excessive pressure, and at the same time ensure the overall safety of the air suspension system.

[0068] In some embodiments, the air spring assembly 40 includes an air spring assembly and a solenoid valve assembly, the solenoid valve assembly being connected to the air spring assembly.

[0069] For example, the air spring assembly includes a plurality of air springs 401, and the solenoid valve assembly includes a plurality of air solenoid valves 402. The number of air springs 401 can correspond one-to-one with the number of air solenoid valves 402. Of course, in other embodiments, multiple air springs 401 can also be connected to the same air solenoid valve 402.

[0070] In one embodiment of this application, the air solenoid valve 402 includes a two-position two-way valve. The number of air solenoid valves 402 is set to four, so the entire air suspension system is equipped with eight two-position two-way valves. Compared with the traditional design, not only is the number of valve bodies reduced, thus reducing the layout space and lowering the cost, but the overall structural design of the air suspension system is also made simpler.

[0071] In the above process, the solenoid valve assembly can control the gas to enter or exit the air spring assembly, thereby realizing the rise or fall of the air spring assembly to meet the needs of different working conditions.

[0072] This air suspension system includes the following operating modes:

[0073] I. Ascending Mode

[0074] like Figure 1 As shown, when the air pressure in the second air tank 102 is sufficient to support the vehicle body rising, the third control valve 71 is activated, the air compression assembly 20 is deactivated, multiple air spring solenoid valves are activated, and the gas in the second air tank 102 enters the air spring 401, causing the vehicle body to rise.

[0075] When the air pressure in the second air tank 102 is insufficient to support the vehicle body rising, the air compressor assembly 20 operates, the first control valve 51 operates, the third control valve 71 operates, and multiple air spring solenoid valves operate. The air compressor assembly 20 pumps the gas in the first air tank 101 into the air spring 401 and the second air tank 102. The air passage between the second air tank 102 and the air spring 401 is connected, and the vehicle body rises.

[0076] It should be noted that in this lifting mode, the inflation logic of the air spring assembly can be to inflate the four air springs 401 sequentially, or to inflate the two air springs 401 on the rear axle first, and then inflate the two air springs 401 on the front axle, etc. Of course, there can be other inflation logics, which are not specifically limited here.

[0077] II. Descent Mode

[0078] like Figure 1 As shown, when the pressure of the first air tank 101 can meet the vehicle body descent time requirements, multiple air spring solenoid valves work, the second control valve 61 works, and the gas in the air spring 401 enters the first air tank 101.

[0079] When the pressure in the first air tank 101 does not meet the vehicle descent time requirement, multiple air spring solenoid valves operate, the first control valve 51 opens, the second control valve 61 opens, and the third control valve 71 opens. The air compression assembly 20 pumps the gas in the first air tank 101 and the air spring 401 into the second air tank 102. The air passage between the first air tank 101 and the air spring 401 is connected, and the vehicle descents.

[0080] III. Regeneration Mode

[0081] When the third control valve 71 and the fourth control valve 82 are activated, the gas in the second gas storage tank 102 is discharged into the atmosphere through the dryer 81. That is, the dryer 81 is purged and cleaned by connecting the third gas passage 70 and the fourth gas passage 80.

[0082] IV. Repair Mode

[0083] The first control valve 51 is activated, the second control valve 61 is activated, the air solenoid valve 402 is activated, and the gas in the air spring 401 and the first air tank 101 is discharged into the atmosphere.

[0084] V. External Supplementation Model

[0085] When the air compressor assembly 20 is working, the third control valve 71 is working, and the air compressor assembly 20 draws in air from the atmosphere and supplies compressed gas to the second air tank 102.

[0086] Alternatively, when the air compressor assembly 20 is working, the first control valve 51, the second control valve 61, and the third control valve 71 are operating, the air compressor assembly 20 draws in air from the atmosphere and supplies compressed gas to the first air tank 101. After pressure division, the gas is supplied to the second air tank 102. Of course, the gas compressed by the air compressor assembly 20 can also be directly supplied to the air spring 401, etc.

[0087] Secondly, this application also provides a vehicle including the air suspension system described above.

[0088] For example, the air suspension system is connected to the vehicle body and the suspension respectively. When raised, the vehicle control unit can control the opening and closing combination of the air suspension system valve and the start or stop of the air compression assembly 20 according to information such as vehicle bus signals, and charge or discharge gas into the air spring assembly 40, thereby realizing the raising and lowering of the vehicle.

[0089] Among them, the vehicles can be fuel-powered vehicles, natural gas vehicles, or new energy vehicles. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended vehicles, etc.

[0090] Since the vehicle provided in the second aspect includes an air suspension system, the vehicle has all the technical effects of an air suspension system, which will not be elaborated here.

[0091] It should be understood that the phrases "in this embodiment," "in this application embodiment," or "as an optional implementation" throughout the specification mean that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, the phrases "in this embodiment," "in this application embodiment," or "as an optional implementation" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Those skilled in the art should also understand that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to this application.

[0092] In the various embodiments of this application, it should be understood that the sequence number of each process does not necessarily imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0093] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of protection of the claims.

Claims

1. An air suspension system characterized by, include: The system comprises an air storage assembly, an air compression assembly, an external air intake assembly, an air spring assembly, and a valve body assembly. The air storage assembly includes a first air tank and a second air tank. The valve body assembly includes a first control valve, a second control valve, a third control valve, and a fourth control valve. The first air tank is connected to the air compression assembly via the first control valve. The second air tank is connected to the air spring assembly via the third control valve. The air compression assembly is connected to the second air tank, the air spring assembly, and the external air intake assembly. One end of the second control valve is connected to the air passage between the first control valve and the first air tank. One end of the fourth control valve is connected to the air passage between the air compression assembly and the second control valve.

2. The air suspension system of claim 1, wherein, The air suspension system has multiple modes; among which In ascending mode, the air pressure in the second air tank is sufficient to support the ascent, the air compression assembly does not work, and the second air tank is connected to the air spring assembly; In descent mode, when the air pressure in the first air tank is sufficient to meet the descent time requirement, the air compression assembly does not operate, and the gas in the air spring assembly enters the first air tank.

3. The air suspension system of claim 1, wherein, In external supplementation mode, the air compression assembly is connected to the first air tank, and the first air tank is connected to the second air tank. The air compression assembly pumps the gas entering the external air intake assembly into the first air tank, and the gas in the first air tank flows to the second air tank or the air spring assembly. Alternatively, the air compression assembly may be connected to the second air tank, wherein the air compression assembly pumps the gas entering the external air intake assembly into the second air tank.

4. The air suspension system of claim 2, wherein, In the rising mode, when the air pressure in the second air tank is insufficient, the air compression assembly operates, and the air compression assembly pumps the gas in the first air tank into the second air tank and / or the air spring assembly.

5. The air suspension system of claim 1 or 3, wherein, The first gas storage tank includes a low-pressure tank, and the second gas storage tank includes a high-pressure tank.

6. The air suspension system of claim 1 or 5, wherein, The air suspension system further includes a first air passage, which is connected to the air compressor assembly and the first air tank, respectively, and the first control valve is connected to the first air passage.

7. The air suspension system of claim 6, wherein The air suspension system also includes a second air passage, one end of which is connected to the first air passage between the first control valve and the first air tank, and the other end of which is connected to the air spring assembly.

8. The air suspension system of claim 6, wherein, The air suspension system also includes a third air passage, one end of which is connected to the second air tank and the other end of which is connected to the air compression assembly. The third control valve is connected to the third air passage.

9. The air suspension system of claim 8, wherein, The air suspension system also includes a fourth air passage, a dryer, and a fourth control valve. The dryer is connected to the third air passage, the fourth air passage is connected to the third air passage between the dryer and the air compression assembly, and the fourth control valve is connected to the fourth air passage.

10. The air suspension system of claim 7, wherein, The air suspension system also includes a sensor connected to the second air path.

11. The air suspension system of any one of claims 1-3, wherein, The external air intake assembly includes a filter and a one-way valve. The filter is connected to the one-way valve, and the one-way valve is connected to the air passage between the air compression assembly and the first air tank.

12. The air suspension system of any one of claims 1-3, wherein, The air spring assembly includes an air spring assembly and a solenoid valve assembly connected to the air spring assembly.

13. A vehicle characterized by comprising: An air suspension system comprising the air spring system of any of claims 1-12.

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