Air suspension system and vehicle

Abstract

The application provides an air suspension system and a vehicle. The air suspension system comprises a first air spring, a second air spring and a gas storage component, and further comprises: a first electromagnetic switch valve connected to the first air spring; a second electromagnetic switch valve connected to the second air spring; a third electromagnetic switch valve connected between the first electromagnetic switch valve and the gas storage component; and a fourth electromagnetic switch valve connected between the second electromagnetic switch valve and the gas storage component. When the first electromagnetic switch valve, the second electromagnetic switch valve, the third electromagnetic switch valve and the fourth electromagnetic switch valve are all powered on, the first electromagnetic switch valve and the third electromagnetic switch valve form a first gas path with the gas storage component, the second electromagnetic switch valve and the fourth electromagnetic switch valve form a second gas path with the gas storage component, the gas storage component inflates the first air spring through the first gas path, and the gas storage component inflates the second air spring through the second gas path, so that the body height of the front axle and the rear axle of the vehicle can be synchronously lifted.

Description

Technical Field

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

[0002] As people pursue a better driving experience, they place higher demands on the safety and comfort of vehicles. In recent years, vehicles have increasingly used intelligent electronically controlled components, such as electronic air suspension systems. Electronic air suspension systems can adjust the vehicle height according to the driver's selection, improving ride comfort and handling stability. However, while current electronic air suspension systems have basic height adjustment capabilities, they cannot achieve synchronized adjustment of the front and rear axle heights, negatively impacting vehicle comfort and safety. Summary of the Invention

[0003] This application provides an air suspension system and a vehicle capable of simultaneously raising the height of the front and rear axles.

[0004] In a first aspect, this application provides an air suspension system for use in a vehicle. The air suspension system includes a first air spring, a second air spring, and an air storage component. The first air spring is used to adjust the vehicle height of the front axle, and the second air spring is used to adjust the vehicle height of the rear axle. The air suspension system further includes: a first electromagnetic switch valve connected to the first air spring; a second electromagnetic switch valve connected to the second air spring; a third electromagnetic switch valve connected between the first electromagnetic switch valve and the air storage component; and a fourth electromagnetic switch valve connected between the second electromagnetic switch valve and the air storage component. All three electromagnetic switch valves are energized to open or de-energized to close. When all three are energized and open, the first and third electromagnetic switch valves form a first air passage with the air storage component, and the second and fourth electromagnetic switch valves form a second air passage with the air storage component. The air storage component inflates the first air spring through the first air passage and inflates the second air spring through the second air passage.

[0005] The first and second air springs are inflated through different air passages. The inflation of the first air spring by the air storage component and the inflation of the second air spring by the air storage component do not affect each other. Even if the pressure inside the first and second air springs is different, the air spring with higher pressure will not inflate the one with lower pressure. This achieves simultaneous lifting of the vehicle's front and rear axles, reducing the possibility of the vehicle body slumping when the front and rear axles are raised simultaneously, which is beneficial to improving the vehicle's comfort and safety.

[0006] Furthermore, since the first air spring and the second air spring are inflated through different air passages, there is no need for the first air spring and the second air spring to alternately inflate to raise the vehicle's front and rear axle height, which helps to improve the inflation efficiency and vehicle lifting efficiency of the air suspension system.

[0007] According to the first aspect, in one possible implementation of this application, the air suspension system further includes an exhaust unit and a fifth electromagnetic switch valve, the fifth electromagnetic switch valve being connected between the first electromagnetic switch valve and the second electromagnetic switch valve, the fifth electromagnetic switch valve being energized to open or de-energized to close.

[0008] The reliability and availability of the entire air suspension system are achieved by introducing an electromagnetic control valve between the first solenoid valve on the front axle and the second solenoid valve on the rear axle.

[0009] The fifth electromagnetic switch valve is de-energized and closed during the synchronous lifting of the vehicle's front and rear axles, causing the first electromagnetic switch valve to disconnect and decouple, allowing the first and second air springs to be inflated through different air paths without affecting each other. When at least one of the second air springs on the rear axle is venting, the fifth electromagnetic switch valve is energized and opened, facilitating the venting of the second air springs.

[0010] According to the first aspect, in one possible implementation of this application, in the event of failure of the third electromagnetic switch valve, the fifth electromagnetic switch valve is energized and opened, and the gas storage component, the fourth electromagnetic switch valve, the fifth electromagnetic switch valve, and the first electromagnetic switch can form a passage to charge the first air spring, and the second electromagnetic switch, the fifth electromagnetic switch valve, and the exhaust unit can form a passage to exhaust the second air spring.

[0011] In the event of a failure of the third solenoid valve, it is energized and opened, allowing the air storage component, the fourth solenoid valve, the fifth solenoid valve, and the first solenoid switch to form a circuit, enabling the air suspension system to operate normally and improving the availability of the air suspension system in the event of component failure.

[0012] According to the first aspect, in one possible implementation of this application, in the event of failure of the fourth electromagnetic switch valve, both the fifth electromagnetic switch valve and the first electromagnetic switch valve are energized and opened, and the fourth electromagnetic switch valve, the fifth electromagnetic switch valve, and the first electromagnetic switch valve are all connected to the gas storage component to inflate the first air spring.

[0013] In the event of a failure of the fourth solenoid valve, it is energized and opened, allowing the air storage component, the third solenoid valve, the fifth solenoid valve, and the second solenoid switch to form a passage to inflate the second air spring, enabling the air suspension system to function normally and improving the availability of the air suspension system in the event of component failure.

[0014] According to the first aspect, in one possible implementation of this application, the gas storage component includes a first gas storage tank and a second gas storage tank, a third electromagnetic switch valve is connected between the first gas storage tank and the first electromagnetic switch valve, and a fourth electromagnetic switch valve is connected between the second gas storage tank and the second electromagnetic switch valve.

[0015] The air storage component includes a first air tank and a second air tank, which helps to increase the air storage capacity, improve the inflation efficiency of the air suspension system, and also improve the layout flexibility of the air suspension system on the vehicle.

[0016] According to the first aspect, in one possible implementation of this application, in the event of failure of the first gas storage tank, the fifth electromagnetic switch valve, the fourth electromagnetic switch valve, and the first electromagnetic switch valve are all energized and opened, and the third electromagnetic switch valve is de-energized and closed. The fourth electromagnetic switch valve, the fifth electromagnetic switch valve, and the first electromagnetic switch valve are connected to the second gas storage tank to inflate the first inflation spring.

[0017] In the event of failure of the first gas tank, both the first and second gas springs can be inflated through the second gas tank.

[0018] According to the first aspect, in one possible implementation of this application, in the event of failure of the second gas storage tank, the fourth electromagnetic switch valve is de-energized and closed, while the third and fifth electromagnetic switch valves are energized and opened. The third, fifth, and second electromagnetic switch valves are connected to the first gas storage tank to inflate the second gas spring.

[0019] According to the first aspect, in one possible implementation of this application, the gas storage component includes a first output terminal and a second output terminal, the first output terminal being connected to a third electromagnetic switch valve, and the second output terminal being connected to a fourth electromagnetic switch valve.

[0020] The first output terminal is connected to the third solenoid switch valve, and the second output terminal is connected to the fourth solenoid switch valve. That is, air is stored and inflated through the same air storage component, which helps to reduce the number of components in the air suspension system and simplifies the structure of the air suspension system.

[0021] According to the first aspect, in one possible implementation of this application, the number of first air springs is at least two, the number of first electromagnetic switch valves corresponds one-to-one with the number of first air springs, the number of second air springs is at least two, and the number of second electromagnetic switch valves corresponds one-to-one with the number of second air springs.

[0022] By adjusting the number of first and second air springs to suit different vehicle types, the application range of the air suspension system can be expanded.

[0023] According to the first aspect, in one possible implementation of this application, the air suspension system further includes a first pressure sensor connected to an air storage component for detecting the gas pressure within the air storage component.

[0024] Secondly, embodiments of this application also provide a vehicle including an air suspension system according to the first aspect.

[0025] Because the first and second air springs in the air suspension system can inflate simultaneously, the vehicle's front and rear axle heights can be raised synchronously, which helps improve the vehicle's comfort and safety. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a common air suspension system;

[0027] Figure 2 This is a schematic diagram of a vehicle structure according to one embodiment of this application;

[0028] Figure 3 This is a connection diagram of a vehicle suspension system according to one embodiment of this application;

[0029] Figure 4 This is a schematic diagram of the structure of an air suspension system provided in another embodiment of this application. Detailed Implementation

[0030] Please see Figure 1 , Figure 1This is a schematic diagram of a common air suspension system. The air suspension system includes an air supply unit, multiple electromagnetic switches, and multiple air springs. The electromagnetic switches are designated as electromagnetic valves 9a0, 9b0, 9c0, and 9d0. These valves are controlled by electrical signals to open and close the air passages. They are normally closed valves, meaning they close when de-energized and open when energized, and are used to maintain the height of the air springs. The air springs are designated as follows: left front air spring 10a0 (installed on the left front wheel), right front air spring 10b0 (installed on the right front wheel), left rear air spring 10c0 (installed on the left rear wheel), and right rear air spring 10d0 (installed on the right rear wheel). The air springs are installed between the vehicle body and the tires to support the vehicle body. Inflating the air springs raises the vehicle height; releasing the air from the air springs lowers the vehicle height. During vehicle height adjustment, the controller primarily uses sensor signals to control the multiple electromagnetic switches to inflate or deflate the air springs, thereby adjusting the vehicle height.

[0031] However, if solenoid valves 9a0, 9b0, 9c0, and 9d0 are opened simultaneously, gas leakage will occur between the high-pressure and low-pressure axles. This means the high-pressure air spring will inflate the low-pressure air spring, causing an unexpected drop in vehicle height. Furthermore, because the front and rear axles cannot be adjusted simultaneously, but only alternately, the adjustment process takes longer and involves noticeable vehicle pitch, affecting ride comfort and safety. For example, static height adjustment results in reduced comfort due to pitch, while dynamic height adjustment while the vehicle is in motion also reduces comfort and safety due to pitch.

[0032] Based on this, this application provides a vehicle and its air suspension system. Figure 2 This is a schematic diagram of a vehicle structure according to one embodiment of this application. Figure 3 This is a connection diagram of a vehicle suspension system according to one embodiment of this application. Figure 2 and Figure 3 As shown, the vehicle provided in this application includes a body 400, an axle 300, wheels 200 and an air suspension system 100. The wheels 200 are mounted on the axle 300, and the air suspension system 100 is mounted between the axle 300 and the body 400.

[0033] In some embodiments of this application, the axle 300 includes a front axle and a rear axle, the vehicle is a four-wheeled vehicle, and the wheels 200 include a front axle left wheel, a front axle right wheel, a rear axle left wheel, and a rear axle right wheel. The front axle of the vehicle is supported by the front axle left wheel and the front axle right wheel, and the rear axle of the vehicle is supported by the front axle left wheel and the front axle right wheel.

[0034] The air suspension system 100 includes an air supply unit 101, an exhaust unit 103, and an air suspension 105. Both the air supply unit 101 and the exhaust unit 103 are connected to the air suspension 105. The air supply unit 101 supplies air to the air suspension 105, and the exhaust unit 103 exhausts air from the air suspension 105 to lower the vehicle's height. The air suspension 105 is installed between the vehicle body 400 and the axle 300, and is used to adjust the vehicle's height. The air suspension system 100 may also include height sensors, controllers, and other devices, which will not be described in detail in this application.

[0035] The air supply unit 101 includes an air filter 1, a muffler 2, an air compressor 3, an air dryer 4, and a first one-way valve 5a, connected sequentially by pipelines. The air filter 1 filters and purifies the air entering the air suspension system 100, preventing impurities in the air from contaminating the components within the air suspension system 100. The muffler 2 reduces noise as air flows through the air suspension system 100, thereby reducing vehicle vibration. The air compressor 3 compresses atmospheric air into high-pressure gas and stores it in the air suspension 105. The air dryer 4 filters moisture, dust, and other impurities from the air. The first one-way valve 5a connects the air dryer 4 and the air suspension 105, delivering air from the air dryer 4 to the air suspension 105 and preventing air from flowing back from the air suspension 105 to the air dryer 4.

[0036] The exhaust unit 103 includes a second one-way valve 5b, a throttle valve 6, an electronic exhaust valve 7, and a pneumatic exhaust valve 8. The second one-way valve 5b is connected to the pipeline between the air dryer 4 and the first one-way valve 5a. The throttle valve 6 is connected to the second one-way valve 5b via a pipeline. The electronic exhaust valve 7 is connected between the air suspension 105 and the throttle valve 6, and is used to exhaust air from the air suspension 105. The throttle valve 6 is connected between the electronic exhaust valve 7 and the second one-way valve 5b, and is used to control the airflow from the electronic exhaust valve 7 to the second one-way valve 5b. The pneumatic exhaust valve 8 is connected to the throttle valve 6 via a pipeline. The electronic exhaust valve 7 is a two-position three-way valve. The electronic exhaust valve 7 includes a first channel and a second channel that can be closed and opened. When the first channel is open, the first channel is connected to the outside, and the gas flowing out of the air suspension 105 can enter the outside through the first channel; that is, the electronic exhaust valve 7 exhausts the air discharged from the air suspension 105 to the outside. When the second channel is open, a portion of the gas flowing out of the air suspension 105 enters the pneumatic exhaust valve 8 through the second channel, while another portion enters the air dryer 4 via the throttle valve 6 and the second one-way valve 5b. In other words, the electronic exhaust valve 7 can selectively connect to the outside environment or to the pipeline between the pneumatic exhaust valve 8 and the throttle valve 6. The pneumatic exhaust valve 8 connects to the air dryer 4 when the internal gas pressure reaches a preset threshold.

[0037] The air suspension 105 includes a first electromagnetic switch valve 9a, a first electromagnetic switch valve 9b, a second electromagnetic switch valve 9c, a second electromagnetic switch valve 9d, a first air spring 10a, a first air spring 10b, a second air spring 10c, a second air spring 10d, a third electromagnetic switch valve 11a, a fourth electromagnetic switch valve 11b, a fifth electromagnetic switch valve 11c, and an air storage component 12. The first air spring 10a is mounted on the left front wheel of the vehicle, and the first air spring 10b is mounted on the right front wheel of the vehicle. The first air springs 10a and 10b are used to adjust the vehicle's front axle height. The second air spring 10c is mounted on the left rear wheel of the vehicle, and the second air spring 10d is mounted on the right rear wheel of the vehicle. The second air springs 10c and 10d are used to adjust the vehicle's front axle height.

[0038] The first electromagnetic switch valve 9a, the first electromagnetic switch valve 9b, the second electromagnetic switch valve 9c, the second electromagnetic switch valve 9d, the third electromagnetic switch valve 11a, the fourth electromagnetic switch valve 11b, and the fifth electromagnetic switch valve 11c are all normally closed electromagnetic valves. The normally closed electromagnetic valves open when energized and close when de-energized.

[0039] The first electromagnetic switch valve 9a and the first electromagnetic switch valve 9b are connected by a pipeline, and both the first electromagnetic switch valve 9a and the first electromagnetic switch valve 9b are connected to the first check valve 5a by a pipeline.

[0040] The first air spring 10a is connected to the first solenoid valve 9a via a pipeline. The first solenoid valve 9a is used to control the inflation and deflation of the first air spring 10a. The first air spring 10b is connected to the first solenoid valve 9b via a pipeline. The first solenoid valve 9b is used to control the inflation and deflation of the first air spring 10b.

[0041] The second air spring 10c is connected to the second solenoid valve 9c via a pipeline. The second solenoid valve 9c is used to control the inflation and deflation of the second air spring 10c. The second air spring 10d is connected to the second solenoid valve 9d. The second solenoid valve 9d is used to control the inflation and deflation of the second air spring 10d.

[0042] The third electromagnetic switch valve 11a is connected to the first electromagnetic switch valve 9a via a pipeline, and the third electromagnetic switch valve 11a is connected to the first electromagnetic switch valve 9b via a pipeline. The third electromagnetic switch valve 11a is used to control the flow and cut-off of air in the pipeline between the first electromagnetic switch valve 9a and the gas storage component 12, and the third electromagnetic switch valve 11a is used to control the flow and cut-off of air in the pipeline between the first electromagnetic valve 9b and the gas storage component 12. The first electromagnetic switch valves 9a and 9b can be connected to the third electromagnetic switch valve 11a via the same pipeline or different pipelines.

[0043] The fourth electromagnetic switch valve 11b is connected to the second electromagnetic switch valve 9c via a pipeline, and the fourth electromagnetic switch valve 11b is connected to the second electromagnetic switch valve 9d via a pipeline.

[0044] The fifth electromagnetic switch valve 11c is connected to the first electromagnetic switch valves 9a and 9b via a pipeline, and is also connected to the second electromagnetic switch valves 9c and 9d via a pipeline. The fifth electromagnetic switch valve 11c is used to control the flow and cut-off of air in the pipeline between the first and second electromagnetic switches.

[0045] The gas storage component 12 is used to store high-pressure gas supplied by the gas supply unit 101. The gas storage component 12 includes a first output port and a second output port. The first output port is connected to a fourth electromagnetic switch valve 11b. The first output port is also connected to a third electromagnetic switch valve 11a, used to supply high-pressure gas to the first air springs 10a and 10b. The third electromagnetic switch valve 11a controls the flow and cut-off of air between the first electromagnetic switch valve 9a and the first output port of the gas storage component 12, and between the first electromagnetic switch valve 9b and the first output port of the gas storage component 12. The second output port is connected to the fourth electromagnetic switch valve 11b, used to supply high-pressure gas to the second air springs 10c and 10d. In this embodiment, the gas storage component 12 is a single gas tank. Storing and filling gas using the same tank helps reduce the number of components in the air suspension system 100 and simplifies its structure.

[0046] The flow and cut-off of air between the second electromagnetic switch valve 9c and the second output port of the gas storage component 12, and between the second electromagnetic switch valve 9d and the second output port of the gas storage component 12 are controlled by the fourth electromagnetic switch valve 11b.

[0047] By controlling the various solenoid valves in the air suspension system 100 with electrical signals, different adjustments to the vehicle's height or attitude can be achieved. The following are some simple examples to illustrate this.

[0048] When the vehicle body height needs to be raised simultaneously for both the front and rear axles, the first electromagnetic switch valve 9a, the first electromagnetic switch valve 9b, the second electromagnetic switch valve 9c, the second electromagnetic switch valve 9d, the third electromagnetic switch valve 11a, and the fourth electromagnetic switch valve 11b are all energized and opened, while the fifth electromagnetic switch valve 11c is de-energized and closed. The first electromagnetic switch valves 9a and 9b are disconnected from the second electromagnetic switch valve 9c, and the first electromagnetic switch valves 9a and 9b are disconnected from the second electromagnetic switch valve 9d. The first electromagnetic switch valve 9a, the third electromagnetic switch valve 11a, and the first output port of the air storage component 12 form a first air passage A; the first electromagnetic switch valve 9b, the third electromagnetic switch valve 11a, and the first output port of the air storage component 12 form a first air passage B; the second electromagnetic switch valve 9c, the fourth electromagnetic switch valve 11b, and the second output port of the air storage component 12 form a second air passage C; the second electromagnetic switch valve 9d, the fourth electromagnetic switch valve 11b, and the second output port of the air storage component 12 form a second air passage D. The air storage component 12 inflates the first air spring 10a through the first air passage A, inflates the first air spring 10b through the first air passage B, inflates the second air spring 10c through the second air passage C, and inflates the second air spring 10d through the second air passage D. The vehicle's front and rear axle heights can be raised synchronously.

[0049] During the process of simultaneously raising the vehicle's front and rear axles, the first and second air springs are inflated through different air passages. In this way, the inflation of the first air spring by the air storage component 12 and the inflation of the second air spring by the air storage component 12 will not affect each other. Even if the pressure inside the first and second air springs is different, the air spring with higher pressure will not inflate the one with lower pressure, reducing the possibility of the vehicle body descending when the front and rear axles are raised simultaneously.

[0050] Furthermore, since the first air spring and the second air spring are inflated through different air passages, there is no need for the first air spring and the second air spring to alternately inflate in order to alternately raise the vehicle's front and rear axle heights, which helps to improve the inflation efficiency and vehicle lifting efficiency of the air suspension system 100.

[0051] When the vehicle height of the front and rear axles needs to be lowered simultaneously, the first electromagnetic switch valve 9a, the first electromagnetic switch valve 9b, the second electromagnetic switch valve 9c, the second electromagnetic switch valve 9d, and the fifth electromagnetic switch valve 11c are all energized and opened, while the third electromagnetic switch valve 11a and the fourth electromagnetic switch valve 11b are de-energized and closed. The first air spring 9a, the first air spring 9b, the second air spring 9c, and the second air spring 9d are all connected to the exhaust unit 103 to achieve exhaust.

[0052] The fifth electromagnetic switch valve 11c is de-energized and closed during the synchronous lifting of the vehicle's front and rear axles, causing the first electromagnetic switch valves 9a and 9b to disconnect and decouple, allowing the first and second air springs to be inflated through different air paths without affecting each other. When the second air springs 10c and 10d on the rear axle need to be vented, the fifth electromagnetic switch valve 11c is energized and opened, facilitating the venting of the second air springs 10c and 10d.

[0053] The first air spring 10a or the first air spring 10b can also be inflated separately. Taking the first air spring 10a as an example, the first electromagnetic switch valve 9a and the third electromagnetic switch valve 11a are energized and opened, while the first electromagnetic switch valve 9b, the second electromagnetic switch valve 9c, the second electromagnetic switch valve 9d, the fourth electromagnetic switch valve 11b and the fifth electromagnetic switch valve 11c are all de-energized and closed. The high-pressure gas in the gas storage component 12 enters the first air spring 10a through the third electromagnetic switch valve 11a and the first electromagnetic switch valve 9a for inflation.

[0054] The second air spring 10c or the second air spring 10d can also be inflated separately. Taking the second air spring 10c being inflated separately as an example, the second electromagnetic switch valve 9c and the fourth electromagnetic switch valve 11b are energized and opened, while the first electromagnetic switch valve 9a, the first electromagnetic switch valve 9b, the second electromagnetic switch valve 9d, the third electromagnetic switch valve 11a, and the fifth electromagnetic switch valve 11c are all de-energized and closed. The high-pressure gas in the gas storage component 12 enters the second air spring 10c for inflation through the fourth electromagnetic switch valve 11b and the second electromagnetic switch valve 9c.

[0055] The first air spring 10a or the first air spring 10b can also be vented separately. Taking the first air spring 10a as an example, the first electromagnetic switch valve 9a is energized and opened, and the first electromagnetic switch valve 9b, the second electromagnetic switch valve 9c, the second electromagnetic switch valve 9d, the third electromagnetic switch valve 11a, the fourth electromagnetic switch valve 11b, and the fifth electromagnetic switch valve 11c are all de-energized and closed. The air in the first air spring 10a is discharged into the exhaust unit 103 through the first electromagnetic switch valve 9a.

[0056] The second air spring 10c or the second air spring 10d can also be vented separately. Taking the second air spring 10c as an example, the second electromagnetic switch valve 9c and the fifth electromagnetic switch valve 11c are energized and opened, while the first electromagnetic switch valve 9a, the first electromagnetic switch valve 9b, the second electromagnetic switch valve 9d, the third electromagnetic switch valve 11a and the fourth electromagnetic switch valve 11b are all de-energized and closed. The air in the second air spring 10c is discharged into the exhaust unit 103 after passing through the second electromagnetic switch valve 9c and the fifth electromagnetic switch valve 11c.

[0057] This application can also achieve the inflation or deflation of each air spring through other control strategies implemented on each solenoid valve. For example, when the third solenoid valve 11a malfunctions and cannot work, the air suspension 105 can operate normally through the fifth solenoid valve 11c. A malfunction of the third solenoid valve 11a usually means that the third solenoid valve 11a is damaged and cannot be used.

[0058] When the third electromagnetic switch valve 11a malfunctions and cannot work, and it is necessary to simultaneously raise the vehicle's front and rear axles, the first electromagnetic switch valves 9a, 9b, 9c, 9d, 11c, and 11b are energized and opened. The high-pressure gas in the gas storage component 12 is then fed into the first air spring 10a via the fourth electromagnetic switch valve 11b, 11c, and 9a; the high-pressure gas in the gas storage component 12 is then fed into the first air spring 10b via the fourth electromagnetic switch valve 11b, 11c, and 9b; the high-pressure gas in the gas storage component 12 is then fed into the second air spring 10c via the fourth electromagnetic switch valve 11b and 9c; and the high-pressure gas in the gas storage component 12 is then fed into the second air spring 10d via the fourth electromagnetic switch valve 11b and 9d. That is, the second output port of the air storage component 12, the fourth electromagnetic switch valve 11b, and the fifth electromagnetic switch valve 11c can form an inflation channel for the first air spring 10a and the first air spring 10b to be inflated.

[0059] When the third electromagnetic switch valve 11a malfunctions and the vehicle height needs to be lowered simultaneously for both the front and rear axles, the first electromagnetic switch valves 9a, 9b, 9c, 9d, and 11c are energized and opened, while the fourth electromagnetic switch valve 11b is de-energized and closed. Gas from the first air spring 10a enters the exhaust unit 103 via the first electromagnetic switch valve 9a, gas from the first air spring 10b enters the exhaust unit 103 via the first electromagnetic switch valve 9b, gas from the second air spring 10c enters the exhaust unit 103 via the second electromagnetic switch valves 9c and 11c, and gas from the second air spring 10d enters the exhaust unit 103 via the second electromagnetic switch valves 9d and 11c. An exhaust passage is formed between the second electromagnetic switch valves 9c and 11c and the air supply unit 101 to allow exhaust from the second air spring 10c. An exhaust passage is formed between the second electromagnetic switch valve 9d, the fifth electromagnetic switch valve 11c and the air supply unit 101 to allow the second air spring 10d to exhaust air.

[0060] If the third electromagnetic switch valve 11a fails to work, the first air spring 10a or the first air spring 10b can be vented separately. Taking the first air spring 10a as an example, the first electromagnetic switch valve 9a is energized and opened, while the first electromagnetic switch valve 9b, the second electromagnetic switch valve 9c, the second electromagnetic switch valve 9d, the fourth electromagnetic switch valve 11b, and the fifth electromagnetic switch valve 11c are all de-energized and closed. The air in the first air spring 10a is discharged into the exhaust unit 103 through the first electromagnetic switch valve 9a.

[0061] In the event that the third electromagnetic switch valve 11a fails to work, exhaust can also be provided to the second air spring 10c or the second air spring 10d alone. Taking the exhaust of the second air spring 10c alone as an example, the second electromagnetic switch valve 9c and the fifth electromagnetic switch valve 11c are energized and opened, while the first electromagnetic switch valve 9a, the first electromagnetic switch valve 9b, the second electromagnetic switch valve 9d, and the fourth electromagnetic switch valve 11b are all de-energized and closed. The air in the second air spring 10c is discharged into the exhaust unit 103 after passing through the second electromagnetic switch valve 9c and the fifth electromagnetic switch valve 11c.

[0062] For example, in some embodiments of this application, when the fourth solenoid valve 11b malfunctions and cannot operate, the air suspension 105 can operate normally through the fifth solenoid valve 11c. A malfunction of the fourth solenoid valve 11b typically refers to the fourth solenoid valve 11b being damaged and unable to function.

[0063] When the fourth electromagnetic switch valve 11b malfunctions and cannot operate, and it is necessary to simultaneously raise the vehicle's front and rear axles, the first electromagnetic switch valves 9a, 9b, 9c, 9d, 11c, and 11a are energized and opened. The high-pressure gas in the gas storage component 12 is then fed into the first air spring 10a via the third electromagnetic switch valve 11a and the first electromagnetic switch valve 9a. Similarly, the high-pressure gas in the gas storage component 12 is fed into the first air spring 10b via the third electromagnetic switch valve 11a and the first electromagnetic switch valve 9b. The high-pressure gas in the gas storage component 12 is fed into the second air spring 10c via the third electromagnetic switch valve 11a, the fifth electromagnetic switch valve 11c, and the second electromagnetic switch valve 9c. Finally, the high-pressure gas in the gas storage component 12 is fed into the second air spring 10c via the third electromagnetic switch valve 11a, the fifth electromagnetic switch valve 11c, and the second electromagnetic switch valve 9c. That is, the first output port of the air storage component 12, the third electromagnetic switch valve 11a, and the fifth electromagnetic switch valve 11c can form an inflation channel for the second air spring 10c and the second air spring 10d to be inflated.

[0064] When the fourth electromagnetic switch valve 11b malfunctions and the vehicle height needs to be lowered simultaneously for both the front and rear axles, the first electromagnetic switch valves 9a, 9b, 9c, 9d, and 11c are energized and opened, while the third electromagnetic switch valve 11a is de-energized and closed. Gas from the first air spring 10a enters the exhaust unit 103 via the first electromagnetic switch valve 9a, gas from the first air spring 10b enters the exhaust unit 103 via the first electromagnetic switch valve 9b, gas from the second air spring 10c enters the exhaust unit 103 via the second electromagnetic switch valves 9c and 11c, and gas from the second air spring 10d enters the exhaust unit 103 via the second electromagnetic switch valves 9d and 11c. An exhaust passage is formed between the second electromagnetic switch valves 9c and 11c and the air supply unit 101 to allow exhaust from the second air spring 10c. An exhaust passage is formed between the second electromagnetic switch valve 9d, the fifth electromagnetic switch valve 11c and the air supply unit 101 to allow the second air spring 10d to exhaust air.

[0065] If the fourth electromagnetic switch valve 11b fails to work, exhaust can be provided separately for the first air spring 10a or the first air spring 10b. Taking exhaust of the first air spring 10a separately as an example, the first electromagnetic switch valve 9a is energized and opened, and the first electromagnetic switch valve 9b, the second electromagnetic switch valve 9c, the second electromagnetic switch valve 9d, the third electromagnetic switch valve 11a, and the fifth electromagnetic switch valve 11c are all de-energized and closed. The air in the first air spring 10a is discharged into the exhaust unit 103 through the first electromagnetic switch valve 9a.

[0066] In the event that the fourth solenoid valve 11b malfunctions and cannot work, exhaust can be provided separately for the second air spring 10c or the second air spring 10d. Taking exhaust of the second air spring 10c as an example, the second solenoid valve 9c and the fifth solenoid valve 11c are energized and opened, while the first solenoid valve 9a, the first solenoid valve 9b, the second solenoid valve 9d, and the third solenoid valve 11a are all de-energized and closed. The air in the second air spring 10c is then discharged into the exhaust unit 103 after passing through the second solenoid valve 9c and the fifth solenoid valve 11c.

[0067] The air suspension 105 also includes a first pressure sensor 13, which is connected to a second electromagnetic switch valve 9c, a second electromagnetic switch valve 9d, and a fourth electromagnetic switch valve 11b. The first pressure sensor 13 is used to detect the pressure in the air storage component 12, the second air spring 10c, and the second air spring 10d. When the pressure in the air storage component 12 detected by the first pressure sensor 13 is lower than a preset value, the first electromagnetic switch valve 9a, the first electromagnetic switch valve 9b, the second electromagnetic switch valve 9c, the second electromagnetic switch valve 9d, the fourth electromagnetic switch valve 11b, and the fifth electromagnetic switch valve 11c are all de-energized and closed, while the third electromagnetic switch valve 11a is energized and opened, allowing high-pressure gas output from the air supply unit 101 to fill the air storage component 12 for storage.

[0068] In some possible embodiments of this application, when the pressure in the gas storage component 12 detected by the first pressure sensor 13 is lower than a preset value, the first electromagnetic switch valve 9a, the first electromagnetic switch valve 9b, the second electromagnetic switch valve 9c, the second electromagnetic switch valve 9d, and the fifth electromagnetic switch valve 11c are all de-energized and closed, while the fourth electromagnetic switch valve 11b and the fifth electromagnetic switch valve 11c are energized and opened, and the high-pressure gas output from the gas supply unit 101 is filled into the gas storage component 12 for storage.

[0069] It is understood that this application does not limit the number of the first air spring and the second air spring. For example, in some possible embodiments of this application, the vehicle can be a motorcycle, with one first air spring and one second air spring. The first electromagnetic switch valve corresponds to the number of first air springs, and the second electromagnetic switch valve corresponds to the number of second air springs. The first air spring is located on the front axle wheel of the vehicle, and the second air spring 10d is located on the rear axle wheel of the vehicle. As another example, in some possible embodiments of this application, the vehicle can be a tricycle, with one first air spring and two second air springs. The first electromagnetic switch valve corresponds to the number of first air springs, and the second electromagnetic switch valve corresponds to the number of second air springs. The first air spring is located on the front axle wheel of the vehicle, one second air spring is located on the left rear axle wheel of the vehicle, and the other second air spring is located on the right rear axle wheel of the vehicle.

[0070] Please see Figure 4 , Figure 4 This is a schematic diagram of the structure of an air suspension system provided in another embodiment of this application. Figure 4 The air suspension system shown is Figure 4 The difference in the air suspension system shown is that the air storage component 12 includes a first air storage tank 12a and a second air storage tank 12b that are separately arranged, a third electromagnetic switch valve 11a connected to the first air storage tank 12a, and a fourth electromagnetic switch valve 11b connected to the second air storage tank 12b.

[0071] The air suspension system 100 can still function even if one of the first air tank 12a or the second air tank 12b fails or malfunctions.

[0072] For example, when the first air tank 12a fails and the vehicle's front and rear axles need to be raised simultaneously, the first electromagnetic switch valve 9a, the first electromagnetic switch valve 9b, the second electromagnetic switch valve 9c, the second electromagnetic switch valve 9d, the fifth electromagnetic switch valve 11c, and the fourth electromagnetic switch valve 11b are energized and opened, while the third electromagnetic switch valve 11a is de-energized and closed. The high-pressure gas in the second air tank 12b is then fed into the first air spring 10a via the fourth electromagnetic switch valve 11b, the fifth electromagnetic switch valve 11c, and the first electromagnetic switch valve 9a. The high-pressure gas in the second air tank 12b is then fed into the first air spring 10b via the fourth electromagnetic switch valve 11b, the fifth electromagnetic switch valve 11c, and the first electromagnetic switch valve 9b. The high-pressure gas in the second air tank 12b is then fed into the second air spring 10c via the fourth electromagnetic switch valve 11b and the second electromagnetic switch valve 9c. The high-pressure gas in the second air tank 12b is then fed into the second air spring 10d via the fourth electromagnetic switch valve 11b and the second electromagnetic switch valve 9d. That is, the second air tank 12b, the fourth electromagnetic switch valve 11b, and the fifth electromagnetic switch valve 11c can form an inflation channel for the first air spring 10a to be inflated.

[0073] For example, when the first air tank 12a fails, the first air springs 10a and 10b can be charged separately. Taking the charging of the first air spring 10a separately as an example, the first electromagnetic switch valve 9a, the fourth electromagnetic switch valve 11b, and the fifth electromagnetic switch valve 11c are energized and opened, while the first electromagnetic switch valve 9b, the second electromagnetic switch valve 9c, the second electromagnetic switch valve 9d, and the third electromagnetic switch valve 11a are de-energized and closed. The high-pressure gas in the second air tank 12b is then charged into the first air spring 10a through the fourth electromagnetic switch valve 11b, the fifth electromagnetic switch valve 11c, and the first electromagnetic switch valve 9a.

[0074] For example, when the second air tank 12b fails, and the vehicle's front and rear axles need to be raised simultaneously, the first electromagnetic switch valve 9a, the first electromagnetic switch valve 9b, the second electromagnetic switch valve 9c, the second electromagnetic switch valve 9d, the fifth electromagnetic switch valve 11c, and the third electromagnetic switch valve 11a are energized and opened, while the fourth electromagnetic switch valve 11b is de-energized and closed. The high-pressure gas in the first air tank 12a is then fed into the first air spring 10a via the third electromagnetic switch valve 11a and the first electromagnetic switch valve 9a. The high-pressure gas in the first air tank 12a is then fed into the first air spring 10b via the third electromagnetic switch valve 11a and the first electromagnetic switch valve 9b. The high-pressure gas in the first air tank 12a is then fed into the second air spring 10c via the third electromagnetic switch valve 11a, the fifth electromagnetic switch valve 11c, and the second electromagnetic switch valve 9c. The high-pressure gas in the first air tank 12a is then fed into the second air spring 10d via the third electromagnetic switch valve 11a, the fifth electromagnetic switch valve 11c, and the second electromagnetic switch valve 9d. That is, the first air tank 12a, the third electromagnetic switch valve 11a, and the fifth electromagnetic switch valve 11c can form an air inflation channel for the second air spring 10c and the second air spring 10d to be inflated.

[0075] The second electromagnetic switch valve 9c, the second electromagnetic switch valve 9d, and the fourth electromagnetic switch valve 11b are connected to the first pressure sensor 13, which is used to detect the pressure in the second air tank 12b, the second air spring 10c, and the second air spring 10d. When the pressure in the second air tank 12b detected by the first pressure sensor 13 is lower than a preset value, the first electromagnetic switch valve 9a, the first electromagnetic switch valve 9b, the second electromagnetic switch valve 9c, the second electromagnetic switch valve 9d, the fourth electromagnetic switch valve 11b, and the fifth electromagnetic switch valve 11c are all de-energized and closed, while the third electromagnetic switch valve 11a is energized and opened. High-pressure gas output from the gas supply unit 101 is then injected into the second air tank 12b for storage, i.e., the second air tank 12b is replenished with gas.

[0076] The air suspension 105 may also include a second pressure sensor connected to a third solenoid valve 11a. The second pressure sensor is used to detect the pressure in the first air tank 12a. When the pressure in the first air tank 12a detected by the second pressure sensor is lower than a preset value, the first solenoid valve 9a, the first solenoid valve 9b, the second solenoid valve 9c, the second solenoid valve 9d, the fourth solenoid valve 11b, and the fifth solenoid valve 11c are all de-energized and closed, and the third solenoid valve 11a is energized and opened. High-pressure gas output from the air supply unit 101 is then injected into the first air tank 12a for storage, i.e., the first air tank 12a is replenished with air.

[0077] It should be understood that expressions such as “comprising” and “may include” used in this application indicate the existence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In this application, terms such as “comprising” and / or “having” are to be interpreted as indicating a particular characteristic, number, operation, constituent element, component, or combination thereof, but not to exclude the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0078] Furthermore, in this application, the expression "and / or" includes any and all combinations of the associated listed words. For example, the expression "A and / or B" may include A, may include B, or may include both A and B.

[0079] In this application, expressions including ordinal numbers such as "first" and "second" may modify the elements. However, such elements are not limited by the foregoing expressions. For example, the foregoing expressions do not limit the order and / or importance of the elements. The foregoing expressions are only used to distinguish one element from other elements. For example, "first user equipment" and "second user equipment" refer to different user equipment, although both "first user equipment" and "second user equipment" are user equipment. Similarly, without departing from the scope of this application, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0080] When a component is referred to as "connected" or "accessed" to other components, it should be understood that this component not only connects directly to or accesses other components, but also that another component may exist between this component and other components. On the other hand, when a component is referred to as "directly connected" or "directly accessed" to other components, it should be understood that no component exists between them.

[0081] 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 the claims.

Claims

1. An air suspension system applied to a vehicle, characterized by, The air suspension system comprises a first air spring, a second air spring and a gas storage component, the first air spring is used to adjust the height of the front axle of the vehicle, the second air spring is used to adjust the height of the rear axle of the vehicle, The air suspension system further comprises: A first electromagnetic switch valve connected to the first air spring; A second electromagnetic switch valve connected to the second air spring; A third electromagnetic switch valve connected between the first electromagnetic switch valve and the gas storage component; A fourth electromagnetic switch valve connected between the second electromagnetic switch valve and the gas storage component; A fifth electromagnetic switch valve connected between the first electromagnetic switch valve and the second electromagnetic switch valve, the fifth electromagnetic switch valve is used to control the flow and cut-off of air in the pipeline between the first electromagnetic switch valve and the second electromagnetic switch valve; An exhaust unit connected to the first electromagnetic switch valve; The first electromagnetic switch valve, the second electromagnetic switch valve, the third electromagnetic switch valve and the fourth electromagnetic switch valve can be opened by power-on or closed by power-off, when the first electromagnetic switch valve, the second electromagnetic switch valve, the third electromagnetic switch valve and the fourth electromagnetic switch valve are opened by power-on and the fifth electromagnetic switch valve is closed by power-off, the first electromagnetic switch valve, the third electromagnetic switch valve and the gas storage component form a first gas path, the second electromagnetic switch valve, the fourth electromagnetic switch valve and the gas storage component form a second gas path, the gas storage component inflates the first air spring through the first gas path, and the gas storage component inflates the second air spring through the second gas path; When the first electromagnetic switch valve, the second electromagnetic switch valve and the fifth electromagnetic switch valve are opened by power-on, and the third electromagnetic switch valve and the fourth electromagnetic switch valve are closed by power-off, the first air spring and the second air spring are communicated with the exhaust unit to realize exhaust; When the third electromagnetic switch valve fails, the fifth electromagnetic switch valve is opened by power-on, the gas storage component, the fourth electromagnetic switch valve, the fifth electromagnetic switch valve and the first electromagnetic switch valve can form a path to inflate the first air spring, and the second electromagnetic switch valve, the fifth electromagnetic switch valve and the exhaust unit can form a path for the second air spring to exhaust.

2. The air suspension system of claim 1, wherein When the fourth electromagnetic switch valve fails, the fifth electromagnetic switch valve is opened by power-on, the gas storage component, the third electromagnetic switch valve, the fifth electromagnetic switch valve and the second electromagnetic switch valve can form a path to inflate the second air spring.

3. The air suspension system of any of claims 1-2, wherein, The gas storage component comprises a first gas storage tank and a second gas storage tank, the third electromagnetic switch valve is connected between the first gas storage tank and the first electromagnetic switch valve, and the fourth electromagnetic switch valve is connected between the second gas storage tank and the second electromagnetic switch valve.

4. The air suspension system of claim 3, wherein In the case that the first air tank fails, the fifth electromagnetic switch valve, the fourth electromagnetic switch valve and the first electromagnetic switch valve are all powered on, and the third electromagnetic switch valve is powered off, the fourth electromagnetic switch valve, the fifth electromagnetic switch valve, the first electromagnetic switch valve and the second air tank are communicated to inflate the first air spring.

5. The air suspension system of claim 3, wherein, In the case that the second air tank fails, the fourth electromagnetic switch valve is powered off, the third electromagnetic switch valve, the fifth electromagnetic switch valve and the second electromagnetic switch valve are powered on, the third electromagnetic switch valve, the fifth electromagnetic switch valve and the second electromagnetic switch valve are communicated with the first air tank to inflate the second air spring.

6. The air suspension system of any of claims 1-2, wherein, The air storage component comprises a first output end and a second output end, the first output end is connected with the third electromagnetic switch valve, and the second output end is connected with the fourth electromagnetic switch valve.

7. The air suspension system of any of claims 1-2, wherein, The number of the first air springs is at least two, the number of the first electromagnetic switch valves corresponds to the number of the first air springs one by one, the number of the second air springs is at least two, and the number of the second electromagnetic switch valves corresponds to the number of the second air springs one by one.

8. The air suspension system of any of claims 1-2, wherein, The air suspension system further comprises a first pressure sensor connected with the air storage component for detecting the gas pressure in the air storage component.

9. A vehicle characterized by comprising: An air suspension system according to any one of claims 1-8.

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