Air suspension system and vehicle

Abstract

The invention provides an air suspension system and a vehicle. The air suspension system comprises a first air spring, a second air spring and an air storage component, and further comprises a first electromagnetic switch valve connected with the first air spring; the second electromagnetic switch valve is connected with the second air spring; the third electromagnetic switch valve is connected between the first electromagnetic switch valve and the gas storage component; and the fourth electromagnetic switch valve is connected between the second electromagnetic switch valve and the gas storage component. Under the condition that the first electromagnetic switch valve, the second electromagnetic switch valve, the third electromagnetic switch valve and the fourth electromagnetic switch valve are electrified and opened, the first electromagnetic switch valve, the third electromagnetic switch valve and the gas storage component form a first gas path, and the second electromagnetic switch valve, the fourth electromagnetic switch valve and the gas storage component form a second gas path; and the air storage component inflates the first air spring through the first air path and inflates the second air spring through the second air path, so that the vehicle body heights of the front axle and the rear axle of the vehicle can be synchronously increased.

Description

Technical Field

[0001] The present application relates to the field of suspension technology, and in particular to an air suspension system and a vehicle. Background Art

[0002] As people pursue a better driving experience, they have put forward higher requirements for the safety and comfort of vehicles. In recent years, more and more vehicles have used intelligent electronic control components, such as the electronic air suspension system. The electronic air suspension system can adjust the vehicle body height according to the driver's choice, improve the vehicle's ride comfort, handling stability, etc. However, although the current electronic air suspension system has a basic height adjustment function, it cannot achieve the synchronous adjustment of the vehicle's front axle height and the vehicle's rear axle height, which has an adverse effect on the vehicle's comfort and safety. Summary of the invention

[0003] The embodiments of the present application provide an air suspension system and a vehicle that can synchronously raise the vehicle body height of the front and rear axles.

[0004] In the first aspect, the present application provides an air suspension system, which is applied to 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 body height of the front axle of the vehicle, and the second air spring is used to adjust the vehicle body height of the rear axle of the vehicle. The air suspension system also includes: a first solenoid switch valve, connected to the first air spring; a second solenoid switch valve, connected to the second air spring; a third solenoid switch valve, connected between the first solenoid switch valve and the air storage component; a fourth solenoid switch valve, connected between the second solenoid switch valve and the air storage component; the first solenoid switch valve, the second solenoid switch valve, the third solenoid switch valve, and the fourth solenoid switch valve can all be powered on and opened or powered off and closed. When the first solenoid switch valve, the second solenoid switch valve, the third solenoid switch valve, and the fourth solenoid switch valve are all powered on and opened, the first solenoid switch valve, the third solenoid switch valve, and the air storage component form a first air path, and the second solenoid switch valve, the fourth solenoid switch valve, and the air storage component form a second air path. The air storage component inflates the first air spring through the first air path, and the air storage component inflates the second air spring through the second air path.

[0005] The first air spring and the second air spring are inflated through different air circuits respectively, and 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 will not affect each other. Even if the pressures in the first air spring and the second air spring are different, the one with higher pressure in the first air spring and the second air spring will not be inflated into the one with lower pressure, thereby achieving the synchronous raising of the vehicle body height of the front and rear axles of the vehicle, reducing the possibility of the problem of vehicle body lowering when the front and rear axles of the vehicle are synchronously raised in height, which is beneficial to improving the comfort and safety of the vehicle.

[0006] In addition, since the first air spring and the second air spring are inflated through different air circuits respectively, there is no need to alternately inflate the first air spring and the second air spring to alternately raise the vehicle body height of the front and rear axles, which is beneficial to improving the inflation efficiency and body lifting efficiency of the air suspension system.

[0007] According to the first aspect, in a possible implementation of the present application, the air suspension system also includes an exhaust unit and a fifth solenoid switch valve, the fifth solenoid switch valve is connected between the first solenoid switch valve and the second solenoid switch valve, and the fifth solenoid switch valve is powered on to open or powered off to close.

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

[0009] The fifth electromagnetic switch valve is powered off and closed during the process of synchronously raising the vehicle body height of the front axle and the rear axle of the vehicle, so that the first electromagnetic switch valve and the first electromagnetic switch valve are disconnected and decoupled, so that the first air spring and the second air spring are inflated through different air paths respectively without affecting each other. When the second air spring on the rear axle and at least one of the second air springs are exhausted, the fifth electromagnetic switch valve is powered on and opened, which facilitates the exhaust of the second air spring and the second air spring.

[0010] According to the first aspect, in a possible implementation of the present application, when the third solenoid switch valve fails, the fifth solenoid switch valve is energized and opened, and the air storage component, the fourth solenoid switch valve, the fifth solenoid switch valve, and the first solenoid switch can form a passage to inflate the first air spring, and the second solenoid switch, the fifth solenoid switch valve, and the exhaust unit can form a passage for exhausting the second air spring.

[0011] When the third solenoid switch valve fails, it is powered on and opened, and the air storage component, the fourth solenoid switch valve, the fifth solenoid switch valve, and the first solenoid switch can form a passage, so that the air suspension system can work normally, thereby improving the availability of the air suspension system when a component fails.

[0012] According to the first aspect, in a possible implementation of the present application, when the fourth solenoid switch valve fails, the fifth solenoid switch valve and the first solenoid switch valve are both energized and opened, and the fourth solenoid switch valve, the fifth solenoid switch valve, and the first solenoid switch valve are all connected to the air storage component to inflate the first air spring.

[0013] When the fourth solenoid switch valve fails, it is powered on and opened, and the air storage component, the third solenoid switch valve, the fifth solenoid switch valve, and the second solenoid switch can form a passage to inflate the second air spring, so that the air suspension system can work normally, thereby improving the availability of the air suspension system when a component fails.

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

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

[0016] According to the first aspect, in a possible implementation of the present application, in the event that the first air tank fails, the fifth solenoid switch valve, the fourth solenoid switch valve and the first solenoid switch valve are all powered on and opened, and when the third solenoid switch valve is powered off and closed, the fourth solenoid switch valve, the fifth solenoid switch valve and the first solenoid switch valve are connected to the second air tank to inflate the first inflatable spring.

[0017] When the first air tank fails, the first air-inflating spring and the second air-inflating spring can both be inflated by the second air tank.

[0018] According to the first aspect, in a possible implementation of the present application, in the event that the second air tank fails, the fourth solenoid switch valve is powered off and closed, the third solenoid switch valve and the fifth solenoid switch valve are powered on and opened, and the third solenoid switch valve, the fifth solenoid switch valve, and the second solenoid switch valve are connected to the first air tank to inflate the second air spring.

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

[0020] The first output end is connected to the third electromagnetic switch valve, and the second output end is connected to the fourth electromagnetic switch valve, that is, air is stored and inflated through the same air storage component, which is beneficial to reducing the number of components of the air suspension system and simplifying the structure of the air suspension system.

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

[0022] By setting the number of first air springs and the number of second air springs to adapt to different vehicle types, the application range of the air suspension system is improved.

[0023] According to the first aspect, in a possible implementation of the present application, the air suspension system further includes a first pressure sensor, which is connected to the air storage component and is used to detect the gas pressure in the air storage component.

[0024] In a second aspect, an embodiment of the present application further provides a vehicle, comprising an air suspension system according to the first aspect.

[0025] Since the first air spring and the second air spring in the air suspension system can be inflated at the same time, the vehicle height of the front and rear axles of the vehicle can be increased synchronously, which is beneficial to improving the comfort and safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0027] Figure 2 A schematic diagram of the structure of a vehicle in one embodiment of the present application;

[0028] Figure 3 A connection diagram of a suspension system of a vehicle in one embodiment of the present application;

[0029] Figure 4 A schematic structural diagram of an air suspension system provided in another embodiment of the present application. DETAILED DESCRIPTION

[0030] See also Figure 1 , Figure 1The schematic diagram of the structure of a common air suspension system includes an air supply unit, a plurality of electromagnetic switches, and a plurality of air springs. The plurality of electromagnetic switch valves are electromagnetic switch valve 9a0, electromagnetic switch valve 9b0, electromagnetic switch valve 9c0, and electromagnetic switch valve 9d0; the electromagnetic switch valve is controlled by an electrical signal to realize the on-off of the air path; the electromagnetic switch valve is a normally closed valve, that is, it is closed when the power is off and opened when the power is on, and can be used to maintain the height of the air spring. The plurality of air springs are the left front air spring 10a0 installed on the left front wheel of the vehicle, the right front air spring 10b0 installed on the right front wheel of the vehicle, the left rear air spring 10c0 installed on the left rear wheel of the vehicle, and the right rear air spring 10d0 installed on the right rear wheel of the vehicle; the air spring is installed between the vehicle body and the tire to support the vehicle body; the height of the vehicle body can be raised by inflating the air spring; the height of the vehicle body can be lowered by releasing the gas in the air spring. When the vehicle is adjusting its height, the controller mainly controls the plurality of electromagnetic switch valves according to the sensor signal to realize the inflation or exhaust of the air spring, thereby realizing the adjustment of the height of the vehicle.

[0031] However, if the electromagnetic switch valves 9a0, 9b0, 9c0, and 9d0 are opened at the same time, there will be a gas cross-flow between the high-pressure axial and low-pressure axial gases, that is, the high-pressure air spring will inflate the low-pressure air spring, causing the vehicle body to drop unexpectedly. In addition, since the front and rear axles cannot be raised at the same time, they can only be raised alternately, which results in a longer time for the raising process, and there is obvious vehicle pitching during the raising process, which affects the ride comfort and safety during the raising process; for example, when the vehicle is raised statically, the vehicle body pitches, which makes the comfort worse; when the vehicle is raised dynamically while driving, the vehicle body pitches, which makes the comfort and safety worse.

[0032] Based on this, the present application provides a vehicle and an air suspension system thereof. Figure 2 This is a schematic diagram of the structure of a vehicle in one embodiment of the present application. Figure 3 FIG. 1 is a connection diagram of a suspension system of a vehicle in one embodiment of the present application. Figure 2 and Figure 3 As shown, the vehicle provided in the present application includes a vehicle body 400 , an axle 300 , a wheel 200 and an air suspension system 100 . The wheel 200 is installed on the axle 300 , and the air suspension system 100 is installed between the axle 300 and the vehicle body 400 .

[0033] In some embodiments of the present application, the axle 300 includes a front axle and a rear axle, the vehicle is a four-wheel 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. The air supply unit 101 and the exhaust unit 103 are both connected to the air suspension 105. The air supply unit 101 is used to supply air to the air suspension 105, and the exhaust unit 103 is used to exhaust the air suspension 105 to reduce the height of the vehicle body. The air suspension 105 is installed between the vehicle body 400 and the axle 300, and the air suspension 105 is used to adjust the vehicle body height. The air suspension system 100 may also include devices such as a height sensor and a controller, which are not 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 which are sequentially connected through pipelines. The air filter 1 is used to filter and purify the air entering the air filter 1 to prevent the impurities in the air from contaminating the components in the air suspension system 100. The muffler 2 is used to reduce the noise when the air flows through the air suspension system 100 to reduce the vibration of the vehicle. The air compressor 3 is used to compress the air in the atmosphere into high-pressure gas and store it in the air suspension 105. The air dryer 4 is used to filter the moisture, dust and other impurities in the air. The first one-way valve 5a is connected between the air dryer 4 and the air suspension 105, and is used to transport the air flowing out of the air dryer 4 to the air suspension 105, and prevent the 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 through a pipeline. The electronic exhaust valve 7 is connected between the air suspension 105 and the throttle valve 6, and is used to exhaust the air suspension 105. The throttle valve 6 is connected between the electronic exhaust valve 7 and the second one-way valve 5b, and the throttle valve 6 is used to control the air flow 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 through 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 opened, the first channel is connected to the outside world, and the gas flowing out of the air suspension 105 can enter the outside world through the first channel, that is, the electronic exhaust valve 7 discharges the air exhausted by the air suspension 105 to the outside world. When the second channel is opened, part of the gas flowing out of the air suspension 105 can enter the pneumatic exhaust valve 8 through the second channel, and part of the gas can enter the air dryer 4 through the throttle valve 6 and the second one-way valve 5b. In other words, the electronic exhaust valve 7 can be selectively connected to the outside or the pipeline between the pneumatic exhaust valve 8 and the throttle valve 6. The pneumatic exhaust valve 8 is connected 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 arranged on the left wheel of the front axle of the vehicle, the first air spring 10b is arranged on the right wheel of the front axle of the vehicle, and the first air spring 10a and the first air spring 10b are used to adjust the vehicle body height of the front axle of the vehicle. The second air spring 10c is arranged on the left wheel of the rear axle of the vehicle, the second air spring 10d is arranged on the right wheel of the rear axle of the vehicle, and the second air spring 10c and the second air spring 10d are used to adjust the vehicle body height of the front axle of the vehicle.

[0038] The first solenoid switch valve 9a, the first solenoid switch valve 9b, the second solenoid switch valve 9c, the second solenoid switch valve 9d, the third solenoid switch valve 11a, the fourth solenoid switch valve 11b, and the fifth solenoid switch valve 11c are all normally closed solenoid valves. The normally closed solenoid valves are opened when power is turned on and closed when power is turned off.

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

[0040] The first air spring 10a is connected to the first electromagnetic switch valve 9a through a pipeline, and the first electromagnetic switch valve 9a is used to control the inflation and exhaust of the first air spring 10a. The first air spring 10b is connected to the first electromagnetic switch valve 9b through a pipeline, and the first electromagnetic switch valve 9b is used to control the inflation and exhaust of the first air spring 10b.

[0041] The second air spring 10c is connected to the second electromagnetic switch valve 9c through a pipeline, and the second electromagnetic switch valve 9c is used to control the inflation and exhaust of the second air spring 10c. The second air spring 10d is connected to the second electromagnetic switch valve 9d, and the second electromagnetic switch valve 9d is used to control the inflation and exhaust of the second air spring 10d.

[0042] The third electromagnetic switch valve 11a is connected to the first electromagnetic switch valve 9a through a pipeline, and the third electromagnetic switch valve 11a is connected to the first electromagnetic switch valve 9b through a pipeline. The third electromagnetic switch valve 11a is used to control the circulation and cutoff of air in the pipeline between the first electromagnetic switch valve 9a and the air storage component 12, and the third electromagnetic switch valve 11a is used to control the circulation and cutoff of air in the pipeline between the first electromagnetic switch valve 9b and the air storage component 12. The first electromagnetic switch valve 9a and the first electromagnetic switch valve 9b can be connected to the third electromagnetic switch valve 11a through the same pipeline or different pipelines.

[0043] The fourth electromagnetic on-off valve 11 b is connected to the second electromagnetic on-off valve 9 c through a pipeline, and the fourth electromagnetic on-off valve 11 b is connected to the second electromagnetic on-off valve 9 d through a pipeline.

[0044] The fifth electromagnetic switch valve 11c is connected to the pipeline between the first electromagnetic switch valve 9a and the first electromagnetic switch valve 9b through a pipeline, and the fifth electromagnetic switch valve 11c is connected to the pipeline between the second electromagnetic switch valve 9c and the second electromagnetic switch valve 9d through a pipeline. The fifth electromagnetic switch valve 11c is used to control the circulation and cutoff of air in the pipeline between the first electromagnetic switch and the second electromagnetic switch.

[0045] The gas storage component 12 is used to store the high-pressure gas provided 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 the fourth electromagnetic switch valve 11b. The first output port is connected to the third electromagnetic switch valve 11a, and is used to deliver high-pressure gas to the first air spring 10a and the first air spring 10b. The third electromagnetic switch valve 11a controls the circulation and cutting 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, and is used to deliver high-pressure gas to the second air spring 10c and the second air spring 10d. In this embodiment, the gas storage component 12 is an air tank, and the air is stored and inflated by the same air tank, which is conducive to reducing the number of components of the air suspension system 100 and simplifying the structure of the air suspension system 100.

[0046] The fourth electromagnetic on-off valve 11 b controls the flow and cutoff of air between the second electromagnetic on-off valve 9 c and the second output port of the air storage component 12 and between the second electromagnetic on-off valve 9 d and the second output port of the air storage component 12 .

[0047] By controlling the solenoid valves in the air suspension system 100 through electrical signals, different adjustments to the vehicle height or posture can be achieved, which is briefly explained below with some examples.

[0048] When it is necessary to synchronously raise the vehicle height of the front axle and the rear axle of the vehicle, the first solenoid switch valve 9a, the first solenoid switch valve 9b, the second solenoid switch valve 9c, the second solenoid switch valve 9d, the third solenoid switch valve 11a, and the fourth solenoid switch valve 11b are all powered on and opened, the fifth solenoid switch valve 11c is powered off and closed, the first solenoid switch valve 9a and the first solenoid switch valve 9b are both disconnected from the second solenoid switch valve 9c, and the first solenoid switch valve 9a and the first solenoid switch valve 9b are both disconnected from the second solenoid switch valve 9d. The first solenoid switch valve 9a, the third solenoid switch valve 11a and the first output port of the air storage component 12 form a first air path A, the first solenoid switch valve 9b, the third solenoid switch valve 11a and the first output port of the air storage component 12 form a first air path B, the second solenoid switch valve 9c, the fourth solenoid switch valve 11b and the second output port of the air storage component 12 form a second air path C, the second solenoid switch valve 9d, the fourth solenoid switch valve 11b and the second output port of the air storage component 12 form a second air path D, the air storage component 12 inflates the first air spring 10a through the first air path A, the air storage component 12 inflates the first air spring 10b through the first air path B, the air storage component 12 inflates the second air spring 10c through the second air path C, and the air storage component 12 inflates the second air spring 10d through the second air path D, and the body height of the front axle and the rear axle of the vehicle can be raised synchronously.

[0049] In the process of synchronously raising the body height of the front axle and the rear axle of the vehicle, the first air spring and the second air spring are inflated through different air circuits respectively. 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 pressures in the first air spring and the second air spring are different, the one with higher pressure in the first air spring and the second air spring will not be inflated towards the one with lower pressure, thereby reducing the possibility of the problem of body lowering when the front and rear axles of the vehicle are synchronously raised in height.

[0050] In addition, since the first air spring and the second air spring are inflated through different air circuits respectively, there is no need to alternately inflate the first air spring and the second air spring to alternately raise the vehicle body height of the front and rear axles, which is beneficial to improving the inflation efficiency and body lifting efficiency of the air suspension system 100.

[0051] When it is necessary to lower the vehicle height of the front and rear axles of the vehicle synchronously, the first solenoid switch valve 9a, the first solenoid switch valve 9b, the second solenoid switch valve 9c, the second solenoid switch valve 9d, and the fifth solenoid switch valve 11c are all powered on and opened, the third solenoid switch valve 11a and the fourth solenoid switch valve 11b are powered off and closed, and 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 powered off and closed during the process of synchronously raising the vehicle height of the front axle and the rear axle of the vehicle, so that the first electromagnetic switch valve 9a and the first electromagnetic switch valve 9b are disconnected and decoupled, so that the first air spring and the second air spring are inflated through different air paths respectively without affecting each other. When the second air spring 10c and the second air spring 10d on the rear axle need to be exhausted, the fifth electromagnetic switch valve 11c is powered on and opened, which facilitates the exhaust of the second air spring 10c and the second air spring 10d.

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

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

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

[0056] The second air spring 10c or the second air spring 10d can also be exhausted separately. Taking the exhaust of the second air spring 10c separately as an example, the second solenoid switch valve 9c and the fifth solenoid switch valve 11c are powered on and opened, and the first solenoid switch valve 9a, the first solenoid switch valve 9b, the second solenoid switch valve 9d, the third solenoid switch valve 11a and the fourth solenoid switch valve 11b are all powered off and closed. The air in the second air spring 10c is discharged into the exhaust unit 103 after passing through the second solenoid switch valve 9c and the fifth solenoid switch valve 11c.

[0057] The present application can also realize the inflation or exhaust of each air spring by implementing other control strategies on each solenoid valve. For example, when the third solenoid switch valve 11a fails and cannot work, the air suspension 105 can work normally through the fifth solenoid switch valve 11c. The failure of the third solenoid switch valve 11a usually means that the third solenoid switch valve 11a is damaged and blocked and cannot be used.

[0058] When the third solenoid switch valve 11a fails and cannot work, when it is necessary to synchronously lift the vehicle body height of the front axle and the rear axle, the first solenoid switch valve 9a, the first solenoid switch valve 9b, the second solenoid switch valve 9c, the second solenoid switch valve 9d, the fifth solenoid switch valve 11c, and the fourth solenoid switch valve 11b are energized and opened, and the high-pressure gas in the gas storage component 12 is charged into the first air spring 10a after passing through the fourth solenoid switch valve 11b, the fifth solenoid switch valve 11c, and the first solenoid switch valve 9a; the high-pressure gas in the gas storage component 12 is charged into the first air spring 10b after passing through the fourth solenoid switch valve 11b, the fifth solenoid switch valve 11c, and the first solenoid switch valve 9b; the high-pressure gas in the gas storage component 12 is charged into the second air spring 10c after passing through the fourth solenoid switch valve 11b and the second solenoid switch valve 9c; and the high-pressure gas in the gas storage component 12 is charged into the second air spring 10d after passing through the fourth solenoid switch valve 11b and the second solenoid switch valve 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 air charging channel for the first air spring 10a and the first air spring 10b to be charged.

[0059] When the third electromagnetic switch valve 11a fails to work and the vehicle height of the front and rear axles of the vehicle needs to be lowered synchronously, 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 powered on and opened, and the fourth electromagnetic switch valve 11b is powered off and closed, and the gas in the first air spring 10a enters the exhaust unit 103 through the first electromagnetic switch valve 9a, the gas in the first air spring 10b enters the exhaust unit 103 through the first electromagnetic switch valve 9b, the gas in the second air spring 10c enters the exhaust unit 103 through the second electromagnetic switch valve 9c and the fifth electromagnetic switch valve 11c, and the gas in the second air spring 10d enters the exhaust unit 103 through the second electromagnetic switch valve 9d and the fifth electromagnetic switch valve 11c. An exhaust channel is formed between the second electromagnetic switch valve 9c, the fifth electromagnetic switch valve 11c and the air supply unit 101 to exhaust the second air spring 10c. An exhaust passage is formed between the second electromagnetic on-off valve 9d, the fifth electromagnetic on-off valve 11c and the air supply unit 101 to exhaust the air from the second air spring 10d.

[0060] When the third solenoid switch valve 11a fails to work, the first air spring 10a or the first air spring 10b can also be exhausted separately. Taking the exhaust of the first air spring 10a separately as an example, the first solenoid switch valve 9a is powered on and opened, and the first solenoid switch valve 9b, the second solenoid switch valve 9c, the second solenoid switch valve 9d, the fourth solenoid switch valve 11b, and the fifth solenoid switch valve 11c are all powered off and closed. The air in the first air spring 10a is discharged into the exhaust unit 103 through the first solenoid switch valve 9a.

[0061] When the third solenoid switch valve 11a fails to work, the second air spring 10c or the second air spring 10d can also be exhausted separately. Taking the exhaust of the second air spring 10c separately as an example, the second solenoid switch valve 9c and the fifth solenoid switch valve 11c are powered on and opened, and the first solenoid switch valve 9a, the first solenoid switch valve 9b, the second solenoid switch valve 9d, and the fourth solenoid switch valve 11b are all powered off and closed. The air in the second air spring 10c is discharged into the exhaust unit 103 after passing through the second solenoid switch valve 9c and the fifth solenoid switch valve 11c.

[0062] For example, in some embodiments of the present application, when the fourth electromagnetic switch valve 11b fails to work, the air suspension 105 can work normally through the fifth electromagnetic switch valve 11c. The failure of the fourth electromagnetic switch valve 11b usually means that the fourth electromagnetic switch valve 11b is damaged and cannot be used.

[0063] When the fourth solenoid switch valve 11b fails and cannot work, when it is necessary to synchronously raise the vehicle body height of the front axle and the rear axle, the first solenoid switch valve 9a, the first solenoid switch valve 9b, the second solenoid switch valve 9c, the second solenoid switch valve 9d, the fifth solenoid switch valve 11c, and the third solenoid switch valve 11a are energized and opened, and the high-pressure gas in the air storage component 12 is charged into the first air spring 10a after passing through the third solenoid switch valve 11a and the first solenoid switch valve 9a, and the high-pressure gas in the air storage component 12 is charged into the first air spring 10b after passing through the third solenoid switch valve 11a and the first solenoid switch valve 9b, and the high-pressure gas in the air storage component 12 is charged into the second air spring 10c after passing through the third solenoid switch valve 11a, the fifth solenoid switch valve 11c, and the second solenoid switch valve 9c. The high-pressure gas in the air storage component 12 is charged into the second air spring 10c after passing through the third solenoid switch valve 11a, the fifth solenoid switch valve 11c, and the second solenoid 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 air charging channel for the second air spring 10c and the second air spring 10d to be charged.

[0064] When the fourth electromagnetic switch valve 11b fails to work and the vehicle height of the front and rear axles of the vehicle needs to be lowered and lifted synchronously, 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 powered on and opened, and the third electromagnetic switch valve 11a is powered off and closed, and the gas in the first air spring 10a enters the exhaust unit 103 through the first electromagnetic switch valve 9a, the gas in the first air spring 10b enters the exhaust unit 103 through the first electromagnetic switch valve 9b, the gas in the second air spring 10c enters the exhaust unit 103 through the second electromagnetic switch valve 9c and the fifth electromagnetic switch valve 11c, and the gas in the second air spring 10d enters the exhaust unit 103 through the second electromagnetic switch valve 9d and the fifth electromagnetic switch valve 11c. An exhaust passage is formed between the second electromagnetic switch valve 9c, the fifth electromagnetic switch valve 11c and the air supply unit 101 to exhaust the second air spring 10c. An exhaust passage is formed between the second electromagnetic on-off valve 9d, the fifth electromagnetic on-off valve 11c and the air supply unit 101 to exhaust the air from the second air spring 10d.

[0065] When the fourth solenoid switch valve 11b fails to work, the first air spring 10a or the first air spring 10b can also be exhausted separately. Taking the exhaust of the first air spring 10a separately as an example, the first solenoid switch valve 9a is powered on and opened, and the first solenoid switch valve 9b, the second solenoid switch valve 9c, the second solenoid switch valve 9d, the third solenoid switch valve 11a, and the fifth solenoid switch valve 11c are all powered off and closed. The air in the first air spring 10a is discharged into the exhaust unit 103 through the first solenoid switch valve 9a.

[0066] When the fourth solenoid switch valve 11b fails to work, the second air spring 10c or the second air spring 10d can also be exhausted separately. Taking the exhaust of the second air spring 10c as an example, the second solenoid switch valve 9c and the fifth solenoid switch valve 11c are powered on and opened, and the first solenoid switch valve 9a, the first solenoid switch valve 9b, the second solenoid switch valve 9d, and the third solenoid switch valve 11a are all powered off and closed. The air in the second air spring 10c is discharged into the exhaust unit 103 after passing through the second solenoid switch valve 9c and the fifth solenoid switch valve 11c.

[0067] The air suspension 105 also includes a first pressure sensor 13, which is connected to the second electromagnetic switch valve 9c, the second electromagnetic switch valve 9d, and the fourth electromagnetic switch valve 11b. The first pressure sensor 13 is used to detect the pressure in the gas storage component 12, the second air spring 10c, and the second air spring 10d. 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, the fourth electromagnetic switch valve 11b, and the fifth electromagnetic switch valve 11c are all powered off and closed, and the third electromagnetic switch valve 11a is powered on and opened, and the high-pressure gas output from the gas supply unit 101 is filled into the gas storage component 12 for storage.

[0068] In some possible implementations of the present 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 solenoid switch valve 9a, the first solenoid switch valve 9b, the second solenoid switch valve 9c, the second solenoid switch valve 9d, and the fifth solenoid switch valve 11c are all powered off and closed, and the fourth solenoid switch valve 11b and the fifth solenoid switch valve 11c are powered on 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 can be understood that the present application does not limit the number of the first air spring and the second air spring. For example, in some possible implementations of the present application, the vehicle can be a motorcycle, the number of the first air spring is one, the number of the second air spring is one, the first electromagnetic switch valve corresponds to the number of the first air spring, the second electromagnetic switch valve corresponds to the number of the second air spring, the first air spring is arranged on the front axle wheel of the vehicle, and the second air spring 10d is arranged on the rear axle wheel of the vehicle. For another example, in some possible implementations of the present application, the vehicle can be a tricycle, the number of the first air spring is one, the number of the second air spring is two, the first electromagnetic switch valve corresponds to the number of the first air spring, the second electromagnetic switch valve corresponds to the number of the second air spring, the first air spring is arranged on the front axle wheel of the vehicle, one second air spring is arranged on the left wheel of the rear axle of the vehicle, and another second air spring is arranged on the right wheel of the rear axle of the vehicle.

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

[0071] When one of the first air tank 12 a and the second air tank 12 b fails or fails, the air suspension system 100 can still operate.

[0072] For example, when the first gas tank 12a fails and the vehicle body height of the front axle and the rear axle of the vehicle needs to be raised synchronously, the first solenoid switch valve 9a, the first solenoid switch valve 9b, the second solenoid switch valve 9c, the second solenoid switch valve 9d, the fifth solenoid switch valve 11c, and the fourth solenoid switch valve 11b are powered on and opened, and the third solenoid switch valve 11a is powered off and closed, and the high-pressure gas in the second gas tank 12b is charged into the first air spring 10a after passing through the fourth solenoid switch valve 11b, the fifth solenoid switch valve 11c, and the first solenoid switch valve 9a, and the high-pressure gas in the second gas tank 12b is charged into the first air spring 10b after passing through the fourth solenoid switch valve 11b, the fifth solenoid switch valve 11c, and the first solenoid switch valve 9b, and the high-pressure gas in the second gas tank 12b is charged into the second air spring 10c after passing through the fourth solenoid switch valve 11b and the second solenoid switch valve 9c, and the high-pressure gas in the second gas tank 12b is charged into the second air spring 10d after passing through the fourth solenoid switch valve 11b and the second solenoid switch valve 9d. That is, the second air storage tank 12b, the fourth electromagnetic switch valve 11b, and the fifth electromagnetic switch valve 11c can form an air charging channel for the first air spring 10a and the first air spring 10a to be charged.

[0073] For example, when the first air storage tank 12a fails, the first air spring 10a and the first air spring 10b can also be inflated separately. Taking the case of inflating 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 powered on and opened, and 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 powered off and closed, and the high-pressure gas in the second air storage tank 12b is charged into the first air spring 10a after passing 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 gas tank 12b fails and the vehicle body height of the front axle and the rear axle of the vehicle needs to be raised synchronously, the first solenoid switch valve 9a, the first solenoid switch valve 9b, the second solenoid switch valve 9c, the second solenoid switch valve 9d, the fifth solenoid switch valve 11c, and the third solenoid switch valve 11a are powered on and opened, and the fourth solenoid switch valve 11b is powered off and closed, and the high-pressure gas in the first gas tank 12a is charged into the first air spring 10a after passing through the third solenoid switch valve 11a and the first solenoid switch valve 9a, and the high-pressure gas in the first gas tank 12a is charged into the first air spring 10b after passing through the third solenoid switch valve 11a and the first solenoid switch valve 9b, and the high-pressure gas in the first gas tank 12a is charged into the second air spring 10c after passing through the third solenoid switch valve 11a, the fifth solenoid switch valve 11c, and the second solenoid switch valve 9c, and the high-pressure gas in the first gas tank 12a is charged into the second air spring 10d after passing through the third solenoid switch valve 11a, the fifth solenoid switch valve 11c, and the second solenoid switch valve 9d. That is, the first air storage tank 12a, the third electromagnetic switch valve 11a, and the fifth electromagnetic switch valve 11c can form an air charging channel for the second air spring 10c and the second air spring 10d to be charged.

[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, and the first pressure sensor 13 is used to detect the pressure in the second gas storage tank 12b, the second air spring 10c, and the second air spring 10d. When the pressure in the second gas storage tank 12b detected by the first pressure sensor 13 is lower than the 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 powered off and closed, and the third electromagnetic switch valve 11a is powered on and opened, and the high-pressure gas output from the gas supply unit 101 is filled into the second gas storage tank 12b for storage, that is, the second gas storage tank 12b is replenished with gas.

[0076] The air suspension 105 may also include a second pressure sensor, which is connected to the third electromagnetic switch valve 11a, and the second pressure sensor is used to detect the pressure in the first gas storage tank 12a. When the pressure in the first gas storage tank 12a detected by the second pressure sensor 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 powered off and closed, and the third electromagnetic switch valve 11a is powered on and opened, and the high-pressure gas output from the gas supply unit 101 is filled into the first gas storage tank 12a for storage, that is, the first gas storage tank 12a is replenished with gas.

[0077] It should be understood that expressions such as "including" and "may include" that may be used in the present 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 the present application, terms such as "including" and / or "having" may be interpreted as indicating specific characteristics, numbers, operations, constituent elements, components, or combinations thereof, but may not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0078] In addition, in the present 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 the present application, expressions including ordinal numbers such as "first" and "second" may modify various elements. However, such elements are not limited by the above expressions. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are only used to distinguish one element from other elements. For example, a first user device and a second user device indicate different user devices, although the first user device and the second user device are both user devices. Similarly, without departing from the scope of the present application, a first element may be referred to as a second element, and similarly, a second element may also be referred to as a first element.

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

[0081] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An air suspension system, applied to a vehicle, characterized in that: The air suspension system includes a first air spring, a second air spring and an air storage component, wherein the first air spring is used to adjust the vehicle height of the front axle of the vehicle, and the second air spring is used to adjust the vehicle 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; The first electromagnetic switch valve, the second electromagnetic switch valve, the third electromagnetic switch valve, and the fourth electromagnetic switch valve can all be powered on and opened or powered off and closed. 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 and opened, the first electromagnetic switch valve, the third electromagnetic switch valve, and the air storage component form a first air path, and the second electromagnetic switch valve, the fourth electromagnetic switch valve, and the air storage component form a second air path. The air storage component inflates the first air spring through the first air path, and the air storage component inflates the second air spring through the second air path.

2. The air suspension system according to claim 1, characterized in that: The air suspension system also includes an exhaust unit and a fifth electromagnetic switch valve. The exhaust unit is connected to the first electromagnetic switch valve. The fifth electromagnetic switch valve is connected between the first electromagnetic switch valve and the second electromagnetic switch valve. The fifth electromagnetic switch valve is powered on to open or powered off to close.

3. The air suspension system according to claim 2, characterized in that: In the event that the third solenoid switch valve fails, when the fifth solenoid switch valve is energized and opened, the air storage component, the fourth solenoid switch valve, the fifth solenoid switch valve, and the first solenoid switch valve can form a passage to inflate the first air spring, and the second solenoid switch, the fifth solenoid switch valve, and the exhaust unit can form a passage for exhausting the second air spring.

4. The air suspension system according to claim 2, characterized in that: In the event that the fourth solenoid switch valve fails, the fifth solenoid switch valve is energized and opened, and the air storage component, the third solenoid switch valve, the fifth solenoid switch valve, and the second solenoid switch can form a passage to inflate the second air spring, and the second solenoid switch, the fifth solenoid switch valve, and the exhaust unit can form a passage for exhausting the second air spring.

5. The air suspension system according to any one of claims 2 to 4, characterized in that: The gas storage component includes a first gas tank and a second gas tank, the third electromagnetic switch valve is connected between the first gas tank and the first electromagnetic switch valve, and the fourth electromagnetic switch valve is connected between the second gas tank and the second electromagnetic switch valve.

6. The air suspension system according to claim 5, characterized in that: In the event that the first air tank fails, the fifth solenoid switch valve, the fourth solenoid switch valve and the first solenoid switch valve are all powered on and opened, and when the third solenoid switch valve is powered off and closed, the fourth solenoid switch valve, the fifth solenoid switch valve and the first solenoid switch valve are connected to the second air tank to inflate the first air spring.

7. The air suspension system according to claim 5, characterized in that: In the event that the second air tank fails, the fourth solenoid switch valve is powered off and closed, the third solenoid switch valve and the fifth solenoid switch valve are powered on and opened, and the third solenoid switch valve, the fifth solenoid switch valve, and the second solenoid switch valve are connected to the first air tank to inflate the second air spring.

8. The air suspension system according to any one of claims 1 to 4, characterized in that: The gas storage component includes a first output end and a second output end, the first output end is connected to the third electromagnetic switch valve, and the second output end is connected to the fourth electromagnetic switch valve.

9. The air suspension system according to any one of claims 1 to 8, characterized in that: The number of the first air springs is at least two, and the number of the first electromagnetic switch valves corresponds one-to-one to the number of the first air springs. The number of the second air springs is at least two, and the number of the second electromagnetic switch valves corresponds one-to-one to the number of the second air springs.

10. The air suspension system according to any one of claims 1 to 9, characterized in that: The air suspension system further includes a first pressure sensor, which is connected to the air storage component and is used to detect the gas pressure in the air storage component.

11. A vehicle, characterized in that: Comprising an air suspension system according to any one of claims 1-10.

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