Air suspension system and vehicle

Abstract

The invention relates to the technical field of vehicle production and manufacturing, in particular to an air suspension system and a vehicle. After the gas power device outputs power, gas enters from the gas inlet, gas exits from the gas outlet, a gas inlet main pipe is connected with the gas inlet, a gas outlet main pipe is connected with the gas outlet, and gas inlet branch pipes are communicated with the gas spring and the gas outlet main pipe respectively. Compressed gas in the gas tank enters the gas spring through the gas inlet main pipe, the gas outlet main pipe and the gas inlet branch pipes, so that the height of the gas spring is increased. When compressed gas in the gas spring enters the gas tank through the gas inlet main pipe and the gas outlet main pipe, the height of the gas spring is reduced. And the height of the vehicle chassis is adjusted by adjusting the height of the air spring, so that the vehicle has more excellent comfort performance.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle production and manufacturing, and in particular to an air suspension system and a vehicle. Background Art

[0002] The vehicle provides good comfort performance through the suspension system, chassis control, and interior space. The suspension system can filter road bumps and control the angle of the vehicle body, which plays a vital role in the comfort of the vehicle. However, most existing vehicles deal with road bumps using a shock absorption system. With the development of vehicles and higher performance requirements, the use of only a shock absorption system cannot meet current needs. Summary of the invention

[0003] The purpose of the present application is to provide an air suspension system and a vehicle.

[0004] The present application provides an air suspension system, comprising an air tank, an air spring, an air intake main pipe, an air outlet main pipe, an air intake branch pipe and a gas power device, wherein the gas power device has an air intake port and an air outlet port, the gas spring is connected to the air intake port of the gas power device through the air intake main pipe, the air tank is connected to the air outlet port of the gas power device through the air outlet main pipe, and the air intake branch pipe is communicated with the gas spring and the air outlet main pipe respectively; the gas power device is configured to output power so that the gas in the air tank passes through the air intake main pipe, the air outlet main pipe and the air intake branch pipe in sequence and enters the gas spring, and the gas power device is also configured to output power so that the gas of the gas spring passes through the air intake main pipe and the air outlet main pipe in sequence and enters the air tank.

[0005] In an exemplary embodiment of the present application, the air intake main pipe includes a first air intake main pipe and a second air intake main pipe, the first air intake main pipe is connected to the air spring and the air intake port of the gas power device, and the second air intake main pipe is connected to the air tank and the air intake port of the gas power device; the air suspension system includes a plurality of control valves, and the plurality of control valves are respectively arranged on the first air intake main pipe, the second air intake main pipe, the air outlet main pipe and the air intake branch pipe, for controlling the switching and shutoff of the first air intake main pipe, the second air intake main pipe, the air outlet main pipe and the air intake branch pipe; when the air intake main pipe and the air intake branch pipe are opened, and the air outlet main pipe is shut off, the gas power device outputs power to extract the compressed gas in the air tank and transport it to the air spring; when the air intake main pipe and the air outlet main pipe are opened, and the air intake branch pipe is shut off, the gas power device outputs power to extract the compressed gas of the air spring and transport it to the air tank.

[0006] In an exemplary embodiment of the present application, the control valve includes at least a first control valve, a second control valve, a third control valve and a fourth control valve, the first control valve is arranged on the intake branch pipe, the second control valve is arranged on the first intake main pipe, the third control valve is arranged on the second intake main pipe, and the fourth control valve is arranged on the outlet main pipe; the first control valve and the third control valve are opened, and the second control valve and the fourth control valve are closed, the gas power device outputs power to extract compressed air in the gas tank and delivers it to the gas spring via the second intake main pipe, the outlet main pipe and the intake branch pipe; the second control valve and the fourth control valve are opened, and the first control valve and the third control valve are closed, the gas power device outputs power to extract compressed air in the gas spring valve and delivers it to the gas tank via the first intake main pipe and the outlet main pipe.

[0007] In an exemplary embodiment of the present application, the first control valve and the second control valve are closed, and the third control valve and the fourth control valve are opened, and the gas power device outputs power so that the compressed air circulates through the air outlet main pipe and the first air inlet main pipe.

[0008] In an exemplary embodiment of the present application, the air suspension system further includes a temperature and pressure sensor, which is disposed in the air outlet main pipe and located between the gas power device and the fourth control valve. The temperature and pressure sensor is used to monitor the air pressure in the system pipeline and the temperature of the gas power device, and control the opening and closing of the control valve according to the air pressure and temperature, so that the compressed air circulates in the air outlet main pipe and the first air inlet main pipe.

[0009] In an exemplary embodiment of the present application, the air suspension system also includes a dryer, which is arranged in the air outlet main pipe and is located between the fourth control valve and the gas power device; the air suspension system also includes an exhaust pipe and a fifth control valve, the exhaust pipe is connected to a side of the dryer close to the gas power device, and the fifth control valve is arranged in the exhaust pipe; the fourth control valve and the fifth control valve are opened, the first control valve, the second control valve and the third control valve are closed, and the compressed air in the gas tank is discharged into the atmosphere via the air outlet main pipe, the dryer and the exhaust pipe, and the compressed air can bring out the moisture in the dryer during the discharge process.

[0010] In an exemplary embodiment of the present application, the air suspension system also includes an intake pipe and a one-way valve, wherein the one-way valve is arranged on the intake pipe, and the gas power device outputs power to draw air from the external atmospheric environment and transports it to the gas tank via the intake pipe and the outlet pipe, and the one-way valve is used to allow the air in the external atmospheric environment to enter the gas power device in one direction; the exhaust pipe and the intake pipe are interconnected on the side close to the external atmospheric environment to form a reuse pipe, and the air suspension system also includes an air filter element, which is arranged on the reuse pipe.

[0011] In an exemplary embodiment of the present application, the air suspension system includes a plurality of gas spring valves and a plurality of gas spring pipes, the gas spring valves are connected to the gas springs, the gas spring valves are arranged in the gas spring pipes, and the plurality of gas spring valves are connected in parallel and are respectively connected to the intake main pipe and the intake branch pipe.

[0012] In an exemplary embodiment of the present application, the gas spring includes a first gas spring, a second gas spring, a third gas spring and a fourth gas spring, the gas spring pipeline includes a first gas spring pipeline, a second gas spring pipeline, a third gas spring pipeline and a fourth gas spring pipeline, and the gas spring valve includes a first gas spring valve, a second gas spring valve, a third gas spring valve and a fourth gas spring valve; the first gas spring pipeline is connected to the first gas spring, the second gas spring pipeline is connected to the second gas spring, the third gas spring pipeline is connected to the third gas spring, and the fourth gas spring pipeline is connected to the fourth gas spring, the first gas spring valve is arranged in the first gas spring pipeline, the second gas spring valve is arranged in the second gas spring pipeline, the third gas spring is arranged in the third gas spring pipeline, and the fourth gas spring valve is arranged in the fourth gas spring pipeline, and the lifting and lowering of the first gas spring, the second gas spring, the third gas spring and the fourth gas spring are controlled by controlling the first gas spring valve, the second gas spring valve, the third gas spring and the fourth gas spring.

[0013] The present application also provides a vehicle, comprising the air suspension system.

[0014] An air suspension system and vehicle of the present application scheme have the following beneficial effects: after the gas power device outputs power, air is taken in from the air inlet and discharged from the air outlet. The air inlet is connected to the air inlet main pipe, the air outlet is connected to the air outlet main pipe, and the air inlet branch pipe is connected to the gas spring and the air outlet main pipe, respectively. The compressed gas in the gas tank enters the gas spring through the air inlet main pipe, the air outlet main pipe and the air inlet branch pipe, so that the height of the gas spring is increased. When the compressed gas in the gas spring enters the gas tank through the air inlet main pipe and the air outlet main pipe, the height of the gas spring is reduced. By adjusting the height of the gas spring, the height of the vehicle chassis is adjusted, so that the vehicle has a more superior comfort performance.

[0015] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 is a structural schematic diagram of an air suspension system in an embodiment of the present invention;

[0019] Figure 2 is a structural schematic diagram of an air suspension system inflating a first gas spring and a second gas spring in an embodiment of the present invention;

[0020] Figure 3 is a structural schematic diagram of an air suspension system in an embodiment of the present invention that deflates a first gas spring and a second gas spring;

[0021] Figure 4 is a structural schematic diagram of an air suspension system inflating a third gas spring and a fourth gas spring in an embodiment of the present invention;

[0022] Figure 5 is a structural schematic diagram of an air suspension system in an embodiment of the present invention that deflates a third gas spring and a fourth gas spring;

[0023] Figure 6 A schematic structural diagram of an air suspension system for realizing high-voltage protection in an embodiment of the present invention;

[0024] Figure 7 A schematic diagram of a structure of an air suspension system for achieving exhaust in an embodiment of the present invention;

[0025] Figure 8 A schematic structural diagram of an air suspension system implementing air intake in an embodiment of the present invention.

[0026] Description of reference numerals:

[0027] 10. Gas tank; 20. Gas spring; 21. First gas spring; 22. Second gas spring; 23. Third gas spring; 24. Fourth gas spring; 31. Inlet main pipe; 311. First inlet main pipe; 312. Second inlet main pipe; 32. Outlet main pipe; 33. Inlet branch pipe; 34. Exhaust pipe; 35. Inlet pipe; 40. Gas power device; 41. Inlet port; 42. Outlet port; 50. Control valve; 51. First control valve; 52. Second control valve ; 53. The third control valve; 54. The fourth control valve; 55. The fifth control valve; 56. The one-way valve; 60. The temperature and pressure sensor; 61. The dryer; 62. The air filter element; 70. The gas spring pipe; 71. The first gas spring pipe; 72. The second gas spring pipe; 73. The third gas spring pipe; 74. The fourth gas spring pipe; 80. The gas spring valve; 81. The first gas spring valve; 82. The second gas spring valve; 83. The third gas spring valve; 84. The fourth gas spring valve. DETAILED DESCRIPTION

[0028] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0029] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0030] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

[0031] It should be noted that the "multiple" mentioned in this article refers to two or more. "And / or" describes the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0032] The vehicle provides good comfort performance through the suspension system, chassis control, and interior space. The suspension system can filter road bumps and control the angle of the vehicle body, which plays a vital role in the comfort of the vehicle. However, most existing vehicles deal with road bumps using a shock absorption system. With the development of vehicles and higher performance requirements, the use of only a shock absorption system cannot meet current needs.

[0033] In order to solve the above technical problems, the present application provides an air suspension system, including a gas tank 10, a gas spring 20, an air intake pipe 31, an air outlet pipe 32, an air intake branch pipe 33 and a gas power device 40, the gas power device 40 having an air inlet 41 and an air outlet 42, the gas spring 20 is connected to the air inlet 41 of the gas power device 40 through the air intake pipe 31, the gas tank 10 is connected to the air outlet 42 of the gas power device 40 through the air outlet pipe 32, and the air intake branch pipe 33 is respectively connected to the gas spring 20 and the air outlet pipe 32; the gas power device 40 is configured to output power so that the gas in the gas tank 10 enters the gas spring 20 through the air intake pipe 31, the air outlet pipe 32 and the air intake branch pipe 33 in sequence, and the gas power device 40 is also configured to output power so that the gas of the gas spring 20 enters the gas tank 10 through the air intake pipe 31 and the air outlet pipe 32 in sequence. Thus, after the gas power device 40 outputs power, it takes in air from the air inlet 41 and discharges air from the air outlet 42. The air inlet main pipe 31 is connected to the air inlet 41, the air outlet main pipe 32 is connected to the air outlet 42, and the air inlet branch pipe 33 is connected to the gas spring 20 and the air outlet main pipe 32, respectively. The compressed gas in the gas tank 10 enters the gas spring 20 through the air inlet main pipe 31, the air outlet main pipe 32 and the air inlet branch pipe 33, so that the height of the gas spring 20 is increased. When the compressed gas in the gas spring 20 enters the gas tank 10 through the air inlet main pipe 31 and the air outlet main pipe 32, the height of the gas spring 20 is reduced. By adjusting the height of the gas spring 20, the height of the vehicle chassis is adjusted, so that the vehicle has a more superior comfort performance.

[0034] In some embodiments, the gas tank 10 is used to store compressed air, and is generally a steel cylinder structure. The gas power device 40 generally includes a motor and a compressor, and the synergistic effect of the two can generate compressed gas and provide power for air circulation. The gas spring 20 has an air cavity, and the compressed gas is filled into the air cavity to expand it. After the compressed gas in the air cavity is released, the gas spring 20 shrinks, thereby adjusting the height of the chassis. The compressed air is stored in the gas tank 10. When the vehicle chassis needs to be raised, the compressed gas in the gas tank 10 enters the gas power device 40 from the air intake pipe 31, and the gas power device 40 rotates to make the compressed air enter the air outlet pipe 32, and then enters the air intake branch pipe 33 through the air outlet pipe 32 and enters the gas spring 20. When the vehicle chassis needs to be lowered, the compressed gas in the gas spring 20 enters the gas power device 40 from the air intake pipe 31, and the gas power device 40 rotates to make the compressed air enter the air outlet pipe 32, and then enters the gas tank 10 through the air outlet pipe 32, and is stored in the gas tank 10 again. Thereby, the compressed gas is circulated in the air suspension system.

[0035] In some embodiments, in the air suspension system, no matter the vehicle chassis is raised or lowered, the compressed gas needs to enter from the air intake main pipe 31 and be discharged from the air outlet main pipe 32 .

[0036] In some embodiments, the air intake main pipe 31 includes a first air intake main pipe 311 and a second air intake main pipe 312. The first air intake main pipe 311 connects the gas spring 20 and the air intake port 41 of the gas power device 40, and the second air intake main pipe 312 connects the gas tank 10 and the air intake port 41 of the gas power device 40. The first air intake main pipe 311 and the second air intake main pipe 312 can assume the function of delivering compressed air from the gas spring 20 to the gas power device 40, and the second air intake main pipe 312 can assume the function of delivering compressed air from the gas tank 10 to the gas power device 40. In another embodiment, the first air intake main pipe 311 and the second air intake main pipe 312 are connected to each other at a side close to the air intake port 41 of the gas power device 40, so as to reuse part of the pipeline to reduce the usage rate of the pipeline, thereby saving installation space.

[0037] In some embodiments, the air suspension system includes a plurality of control valves 50, which are respectively arranged on the first intake main pipe 311, the second intake main pipe 312, the outlet main pipe 32 and the intake branch pipe 33, and are used to control the opening and closing of the first intake main pipe 311, the second intake main pipe 312, the outlet main pipe 32 and the intake branch pipe 33; when the intake main pipe 31 and the intake branch pipe 33 are opened, and the outlet main pipe 32 is closed, the gas power device 40 outputs power to extract the compressed gas in the gas tank 10 and delivers it to the gas spring 20; when the intake main pipe 31 and the outlet main pipe 32 are opened, and the intake branch pipe 33 is closed, the gas power device 40 outputs power to extract the compressed gas of the gas spring 20 and delivers it to the gas tank 10. According to actual use, one control valve 50 can be set in the corresponding first intake main pipe 311, the second intake main pipe 312, the outlet main pipe 32 and the intake branch pipe 33. Specifically, the control valve 50 at least includes a first control valve 51, a second control valve 52, a third control valve 53 and a fourth control valve 54. The first control valve 51 is arranged on the intake branch pipe 33, the second control valve 52 is arranged on the first intake main pipe 311, the third control valve 53 is arranged on the second intake main pipe 312, and the fourth control valve 54 is arranged on the outlet main pipe 32. The gas spring 20 is inflated and deflated by controlling the first control valve 51, the second control valve 52, the third control valve 53 and the fourth control valve 54, respectively.

[0038] In some embodiments, the air suspension system includes a plurality of gas spring valves 80 and a plurality of gas spring pipes 70, the gas spring pipes 70 are connected to the gas springs 20, the gas spring valves 80 are arranged in the gas spring pipes 70, and the plurality of gas spring pipes 70 are connected in parallel to the intake main pipe 31 and the intake branch pipe 33. Specifically, the gas spring 20 includes a first gas spring 21, a second gas spring 22, a third gas spring 23 and a fourth gas spring 24, the gas spring pipe 70 includes a first gas spring pipe 71, a second gas spring pipe 72, a third gas spring pipe 73 and a fourth gas spring pipe 74, and the gas spring valve 80 includes a first gas spring valve 81, a second gas spring valve 82, a third gas spring valve 83 and a fourth gas spring valve 84.

[0039] In some embodiments, the first gas spring pipe 71 is connected to the first gas spring 21, the second gas spring pipe 72 is connected to the second gas spring 22, the third gas spring pipe 73 is connected to the third gas spring 23, and the fourth gas spring pipe 74 is connected to the fourth gas spring 24. The first gas spring valve 81 is arranged on the first gas spring pipe 71, the second gas spring valve 82 is arranged on the second gas spring pipe 72, the third gas spring 23 is arranged on the third gas spring pipe 73, and the fourth gas spring valve 84 is arranged on the fourth gas spring pipe 74. The first gas spring valve 81, the second gas spring valve 82, the third gas spring valve 83 and the fourth gas spring valve 84 are controlled to control the lifting and lowering of the first gas spring 21, the second gas spring 22, the third gas spring 23 and the fourth gas spring 24.

[0040] In some embodiments, reference Figure 2 As shown, Figure 2 1 is a schematic structural diagram of an air suspension system inflating a first gas spring 21 and a second gas spring 22 in an embodiment of the present invention. Figure 2 The opening of the control valve 50 is indicated by the asterisk graphic in its upper right corner, and the control valve 50 is closed without the asterisk graphic. The arrow represents the flow direction of the gas. Referring to Table 1, Table 1 is a control logic table for the inflation of an air suspension system. In Table 1, CV1 represents the first control valve 51, CV2 represents the second control valve 52, CV3 represents the third control valve 53, and CV4 represents the fourth control valve 54; SV1 represents the first gas spring valve 81, SV2 represents the second gas spring valve 82, SV3 represents the third gas spring valve 83, and SV4 represents the fourth gas spring valve 84. Figure 2 The inflation control method of the first gas spring 21 and the second gas spring 22 is specifically described in Table 1 as follows:

[0041] CV1 CV2 CV3 CV4 Open closure Open closure SV1 SV2 SV3 SV4 Open Open closure closure

[0042] Table 1

[0043] Specifically, the first control valve 51 and the third control valve 53 are opened, and the second control valve 52 and the fourth control valve 54 are closed, and the gas power device 40 outputs power to extract the compressed air in the gas tank 10 and delivers it to the gas spring 20 through the second air intake pipe 312, the air outlet pipe 32, and the air intake branch pipe 33, and fills the gas into the gas spring pipeline 70 to enter the gas spring 20, and then controls the first gas spring valve 81 and the second gas spring valve 82 to open, the third gas spring valve 83 and the fourth gas spring valve 84 to close, and the gas power device 40 opens to output power, thereby increasing the height of the first gas spring 21 and the second gas spring 22. Generally speaking, the first gas spring 21 and the second gas spring 22 are located at the front axle of the vehicle, so the height of the front axle of the vehicle can be increased.

[0044] In some embodiments, reference Figure 3 As shown, Figure 3 1 is a schematic structural diagram of an air suspension system in an embodiment of the present invention for deflating a first gas spring 21 and a second gas spring 22 . Figure 3 The opening of the control valve 50 is indicated by the asterisk graphic on its upper right corner, and the closing of the control valve 50 is indicated by the asterisk graphic. The specific meanings of CV1, CV2, CV3, and CV4 in Table 2 are the same as those of CV1, CV2, CV3, and CV4 in Table 1. Referring to Table 2, Table 2 is a control logic table for inflation of an air suspension system. Figure 3 The deflation control method of the first gas spring 21 and the second gas spring 22 is specifically described in Table 2 as follows:

[0045] CV1 CV2 CV3 CV4 closure Open closure Open SV1 SV2 SV3 SV4 Open Open closure closure

[0046] Table 2

[0047] Specifically, the second control valve 52 and the fourth control valve 54 are opened, and the first control valve 51 and the third control valve 53 are closed, and the gas power device 40 outputs power to extract the compressed air in the gas spring valve 80 and delivers it to the gas tank 10 via the first air inlet pipe 311 and the air outlet pipe 32. The compressed gas in the gas spring 20 passes through the first air inlet pipe 311 of the gas spring pipeline 70, and then controls the first gas spring valve 81 and the second gas spring valve 82 to open, the third gas spring valve 83 and the fourth gas spring valve 84 to close, and the gas power device 40 opens to output power, thereby reducing the height of the first gas spring 21 and the second gas spring 22. Generally speaking, the first gas spring 21 and the second gas spring 22 are located at the front axle of the vehicle, so the height of the front axle of the vehicle can be reduced.

[0048] In some embodiments, reference Figure 4 As shown, Figure 4 It is a structural schematic diagram of an air suspension system inflating a third gas spring 23 and a fourth gas spring 24 in an embodiment of the present invention. Figure 4 The opening of the control valve 50 is indicated by the asterisk graphic on its upper right corner, and the closing of the control valve 50 is indicated by the asterisk graphic. The specific meanings of CV1, CV2, CV3, and CV4 in Table 3 are the same as those of CV1, CV2, CV3, and CV4 in Table 1. Referring to Table 3, Table 3 is a control logic table for inflation of an air suspension system. Figure 4 The inflation control method of the third gas spring 23 and the fourth gas spring 24 is specifically described in Table 3 as follows:

[0049] CV1 CV2 CV3 CV4 Open closure Open closure SV1 SV2 SV3 SV4 closure closure Open Open

[0050] Table 3

[0051] Specifically, the first control valve 51 and the third control valve 53 are opened, and the second control valve 52 and the fourth control valve 54 are closed, and the gas power device 40 outputs power to extract the compressed air in the gas tank 10 and delivers it to the gas spring 20 through the second air intake pipe 312, the air outlet pipe 32, and the air intake branch pipe 33, and fills the gas into the gas spring pipeline 70 to enter the gas spring 20, and then controls the third gas spring valve 83 and the fourth gas spring valve 84 to open, the first gas spring valve 81 and the second gas spring valve 82 to close, and the gas power device 40 opens to output power, thereby increasing the height of the third gas spring 23 and the fourth gas spring 24. Generally speaking, the third gas spring 23 and the fourth gas spring 24 are located at the rear axle of the vehicle, so the height of the rear axle of the vehicle can be increased.

[0052] In some embodiments, reference Figure 5 As shown, Figure 5It is a structural schematic diagram of an air suspension system in an embodiment of the present invention that deflates the third gas spring 23 and the fourth gas spring 24 . Figure 5 The opening of the control valve 50 is indicated by the asterisk graphic on its upper right corner, and the closing of the control valve 50 is indicated by the asterisk graphic. The specific meanings of CV1, CV2, CV3, and CV4 in Table 4 are the same as those of CV1, CV2, CV3, and CV4 in Table 1. Referring to Table 4, Table 4 is a control logic table for inflation of an air suspension system. Figure 5 The deflation control method of the third gas spring 23 and the fourth gas spring 24 is specifically described in Table 4 as follows:

[0053] CV1 CV2 CV3 CV4 closure Open closure Open SV1 SV2 SV3 SV4 closure closure Open Open

[0054] Table 4

[0055] Specifically, the second control valve 52 and the fourth control valve 54 are opened, and the first control valve 51 and the third control valve 53 are closed, and the gas power device 40 outputs power to extract the compressed air in the gas spring valve 80 and delivers it to the gas tank 10 via the first air inlet pipe 311 and the air outlet pipe 32. The compressed gas in the gas spring 20 passes through the gas spring pipeline 70 and the first air inlet pipe 311, specifically controlling the third gas spring valve 83 and the fourth gas spring valve 84 to open, the first gas spring valve 81 and the second gas spring valve 82 to close, and the gas power device 40 opens to output power, thereby reducing the height of the third gas spring 23 and the fourth gas spring 24. Generally speaking, the third gas spring 23 and the fourth gas spring 24 are located at the rear axle of the vehicle, so the height of the rear axle of the vehicle can be reduced.

[0056] In some embodiments, reference Figure 6 As shown, Figure 6 A schematic structural diagram of an air suspension system implementing high-voltage protection in an embodiment of the present invention. Figure 6 The opening of the control valve 50 is indicated by the asterisk graphic on its upper right corner, and the closing of the control valve 50 does not have an asterisk graphic. The specific meanings of CV1, CV2, CV3, and CV4 in Table 5 are the same as those of CV1, CV2, CV3, and CV4 in Table 1. Referring to Table 5, Table 5 is a control logic table for realizing high-pressure protection of an air suspension system. Figure 6 The deflation of the gas spring 20 is specifically described in Table 5 as follows:

[0057] CV1 CV2 CV3 CV4 closure closure Open Open SV1 SV2 SV3 SV4 closure closure closure closure

[0058] Table 5

[0059] Specifically, the first control valve 51 and the second control valve 52 are closed, and the third control valve 53 and the fourth control valve are opened, and the gas power device 40 outputs power to circulate the compressed air through the outlet pipe 32 and the first intake pipe 311. When the compressor is working, when it is detected that the gas pressure in the system is too high (calibrated value), the third control valve 53 and the fourth control valve 54 are opened, and the gas power device 40 is turned on to output power, so as to maintain idling so that the two ends of the air pump are connected to balance the pressure. When the air suspension system performs high-pressure protection, the first gas spring valve 81, the second gas spring valve 82, the third gas spring valve 83 and the fourth gas spring valve 84 are closed. In another embodiment, the gas power device 40 can be directly powered off to avoid damage caused by long-term overload.

[0060] In some embodiments, the air suspension system further includes a temperature and pressure sensor 60, which is disposed in the outlet pipe 32 and between the gas power device 40 and the fourth control valve 54. The temperature and pressure sensor 60 is used to monitor the air pressure in the pipe and the temperature of the gas power device 40, and to control the opening and closing of the control valve 50 according to the air pressure and temperature, so that the compressed air circulates in the outlet pipe 32 and the first air inlet pipe 311. The temperature and pressure sensor 60 is an integrated sensor of a temperature sensor and a pressure sensor, which can simultaneously monitor the temperature of the gas power device 40 and the air pressure in the system pipe. When it is detected that the air pressure in the system pipe is too high, it keeps idling so that the two ends of the air pump are connected to balance the pressure; when it is detected that the temperature of the gas power device 40 is too high, it directly controls to cut off the power supply of the gas power device 40 to avoid long-term overload of the motor.

[0061] In some embodiments, the air suspension system further includes a dryer 61, which is disposed in the air outlet main pipe 32 and is located between the fourth control valve 54 and the gas power device 40. The compressed gas needs to pass through the dryer 61 to absorb moisture before entering the gas spring 20 and the gas tank 10, so as to prevent the moisture from freezing and blocking the gas path, reduce corrosion and failure, and thus improve system performance and life.

[0062] The air suspension system also includes an exhaust pipe 34 and a fifth control valve 55. The exhaust pipe 34 is connected to the side of the dryer 61 close to the gas power device 40, and the fifth control valve 55 is arranged in the exhaust pipe 34; the fifth control valve 55 is used to control the opening and closing of the exhaust pipe 34. When the fifth control valve 55 is opened, since the gas pressure in the system pipe is greater than the gas pressure of the outside atmosphere, the compressed gas in the system pipe will be discharged into the atmosphere through the exhaust pipe 34, thereby taking out the moisture of the dryer 61 during the exhaust process. Reduce the saturation of moisture in the dryer 61, so that the dryer 61 has a better drying function. A moisture monitoring sensor can generally be set in the dryer 61 to monitor the moisture concentration in the dryer 61 in real time. When the moisture concentration is detected to be too high (calibrated value), exhaust is performed.

[0063] In some embodiments, reference Figure 7 As shown, Figure 7 A schematic structural diagram of an air suspension system for achieving exhaust in an embodiment of the present invention. Figure 7 The opening of the control valve 50 is indicated by the asterisk graphic on its upper right corner, and the control valve 50 is closed without the asterisk graphic. Referring to Table 6, Table 6 is a control logic table for exhaust of an air suspension system. In Table 6, CV1 represents the first control valve 51, CV2 represents the second control valve 52, CV3 represents the third control valve 53, CV4 represents the fourth control valve 54, and CV5 represents the fifth control valve 55. Figure 7 The exhaust process is specifically described in Table 6 as follows:

[0064]

[0065] Table 6

[0066] Specifically, the fourth control valve 54 and the fifth control valve 55 are opened, the first control valve 51, the second control valve 52 and the third control valve 53 are closed, and the compressed air in the gas tank 10 is discharged into the atmosphere through the gas outlet main pipe 32, the dryer 61 and the exhaust pipe 34, and during the discharge process, the compressed air can take out the moisture in the dryer 61. When the air suspension system is exhausted, the first gas spring valve 81, the second gas spring valve 82, the third gas spring valve 83 and the fourth gas spring valve 84 are closed, and the gas power device 40 is closed to stop outputting power.

[0067] In some embodiments, reference Figure 8 As shown, Figure 8 A schematic structural diagram of an air suspension system implementing air intake in an embodiment of the present invention. Figure 8The opening of the control valve 50 is indicated by the asterisk graphic on its upper right corner, and the control valve 50 is closed without the asterisk graphic. Referring to Table 7, Table 7 is a control logic table for air intake of an air suspension system. In Table 6, CV1 represents the first control valve 51, CV2 represents the second control valve 52, CV3 represents the third control valve 53, CV4 represents the fourth control valve 54, CV5 represents the fifth control valve 55, and CV6 represents the one-way valve 56. Figure 8 The exhaust process is described in detail in Table 7 as follows:

[0068]

[0069] Table 7

[0070] Specifically, the first control valve 51, the second control valve 52, the third control valve 53 and the fifth control valve 55 are all closed, the fourth control valve 54 and the one-way valve 56 are opened, the gas power device 40 outputs power to extract air from the external atmospheric environment and delivers it to the gas tank 10 through the intake pipe 35 and the outlet pipe 32, and the one-way valve 56 is used to allow the air in the external atmospheric environment to enter the gas power device 40 in one direction. When the air suspension system is inhaled, the gas power device 40 opens the output power and closes the first gas spring valve 81, the second gas spring valve 82, the third gas spring valve 83 and the fourth gas spring valve 84.

[0071] In some embodiments, the exhaust pipe 34 and the intake pipe 35 are interconnected on the side close to the external atmospheric environment to form a reused pipe, and the air suspension system further includes an air filter 62, which is arranged in the reused pipe. By reusing part of the pipe, the utilization rate of the pipe is reduced, thereby reducing the installation space. The air filter 62 is arranged in the reused pipe to filter impurities in the external atmosphere, thereby preventing the impurities from clogging and corroding the pipes in the system, thereby increasing the service life of the pipes and parts in the system.

[0072] In the present application, the air suspension system can realize the raising and lowering of the height of the front axle of the vehicle, the raising and lowering of the height of the rear axle of the vehicle, high pressure protection, exhaust, and air intake. Such an air suspension system has superior performance and can provide good comfort.

[0073] The present application also provides a vehicle, comprising the above-mentioned air suspension system, which can realize the lowering and raising of the height of the front axle and the rear axle of the vehicle.

[0074] In this application, unless otherwise clearly specified and limited, the terms "disposed (provided with)", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0075] In the description of this specification, the description of reference terms such as "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment are included in at least one embodiment of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0076] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent of this application.

Claims

1. An air suspension system, characterized in that: The air suspension system comprises: an air tank, an air spring, an air intake main pipe, an air outlet main pipe, an air intake branch pipe and a gas power device, wherein the gas power device has an air intake port and an air outlet port, the air spring is connected to the air intake port of the gas power device through the air intake main pipe, the air tank is connected to the air outlet port of the gas power device through the air outlet main pipe, and the air intake branch pipe is communicated with the air spring and the air outlet main pipe respectively; The gas power device is configured to output power so that the gas in the gas tank passes through the air inlet main pipe, the air outlet main pipe and the air inlet branch pipe in sequence and enters the gas spring, and the gas power device is also configured to output power so that the gas of the gas spring passes through the air inlet main pipe and the air outlet main pipe in sequence and enters the gas tank.

2. The air suspension system according to claim 1, characterized in that: The air intake main pipe comprises a first air intake main pipe and a second air intake main pipe, the first air intake main pipe is connected to the gas spring and the air intake port of the gas power device, and the second air intake main pipe is connected to the gas tank and the air intake port of the gas power device; The air suspension system includes a plurality of control valves, which are respectively arranged on the first intake main pipe, the second intake main pipe, the outlet main pipe and the intake branch pipe, and are used to control the opening and closing of the first intake main pipe, the second intake main pipe, the outlet main pipe and the intake branch pipe; when the intake main pipe and the intake branch pipe are opened, and the outlet main pipe is closed, the gas power device outputs power to extract the compressed gas in the gas tank and transport it to the gas spring; when the intake main pipe and the outlet main pipe are opened, and the intake branch pipe is closed, the gas power device outputs power to extract the compressed gas from the gas spring and transport it to the gas tank.

3. The air suspension system according to claim 2, characterized in that: The control valve at least includes a first control valve, a second control valve, a third control valve and a fourth control valve, wherein the first control valve is arranged on the intake branch pipe, the second control valve is arranged on the first intake main pipe, the third control valve is arranged on the second intake main pipe, and the fourth control valve is arranged on the outlet main pipe; The first control valve and the third control valve are opened, and the second control valve and the fourth control valve are closed, and the gas power device outputs power to extract the compressed air in the gas tank and delivers it to the gas spring via the second air inlet main pipe, the air outlet main pipe, and the air inlet branch pipe; The second control valve and the fourth control valve are opened, and the first control valve and the third control valve are closed, and the gas power device outputs power to extract the compressed air in the gas spring valve and delivers it to the gas tank via the first air inlet main pipe and the air outlet main pipe.

4. The air suspension system according to claim 3, characterized in that: The first control valve and the second control valve are closed, and the third control valve and the fourth control valve are opened, and the gas power device outputs power so that the compressed air circulates through the air outlet main pipe and the first air inlet main pipe.

5. The air suspension system according to claim 3, characterized in that: The air suspension system also includes a temperature and pressure sensor, which is arranged in the air outlet main pipe and located between the gas power device and the fourth control valve. The temperature and pressure sensor is used to monitor the air pressure in the system pipeline and the temperature of the gas power device, and control the opening and closing of the control valve according to the air pressure and temperature, so that the compressed air circulates in the air outlet main pipe and the first air inlet main pipe.

6. The air suspension system according to claim 3, characterized in that: The air suspension system further comprises a dryer, which is arranged on the air outlet main pipe and is located between the fourth control valve and the gas power device; The air suspension system further includes an exhaust pipe and a fifth control valve, wherein the exhaust pipe is connected to a side of the dryer close to the gas power device, and the fifth control valve is arranged on the exhaust pipe; The fourth control valve and the fifth control valve are opened, and the first control valve, the second control valve and the third control valve are closed, and the compressed air in the gas tank is discharged into the atmosphere through the gas outlet main pipe, the dryer and the exhaust pipe, and the compressed air can bring out the moisture in the dryer during the discharge process.

7. The air suspension system according to claim 6, characterized in that: The air suspension system further comprises an air intake pipe and a one-way valve, wherein the one-way valve is arranged on the air intake pipe, and the air from the external atmospheric environment is extracted by the output power of the gas power device and transported to the gas tank via the air intake pipe and the air outlet pipe, and the one-way valve is used to allow the air in the external atmospheric environment to enter the gas power device in one direction; The exhaust pipe and the intake pipe are connected to each other at a side close to the external atmospheric environment to form a reuse pipe. The air suspension system also includes an air filter element, which is arranged in the reuse pipe.

8. The air suspension system according to claim 1, characterized in that: The air suspension system includes a plurality of gas spring valves and a plurality of gas spring pipes, wherein the gas spring pipes are connected to the gas springs, the gas spring valves are arranged on the gas spring pipes, and the plurality of gas spring pipes are connected in parallel and are respectively connected to the intake main pipe and the intake branch pipe.

9. The air suspension system according to claim 8, characterized in that: The gas spring comprises a first gas spring, a second gas spring, a third gas spring and a fourth gas spring, the gas spring pipeline comprises a first gas spring pipeline, a second gas spring pipeline, a third gas spring pipeline and a fourth gas spring pipeline, and the gas spring valve comprises a first gas spring valve, a second gas spring valve, a third gas spring valve and a fourth gas spring valve; The first gas spring pipeline is connected to the first gas spring, the second gas spring pipeline is connected to the second gas spring, the third gas spring pipeline is connected to the third gas spring, and the fourth gas spring pipeline is connected to the fourth gas spring. The first gas spring valve is arranged on the first gas spring pipeline, the second gas spring valve is arranged on the second gas spring pipeline, the third gas spring is arranged on the third gas spring pipeline, and the fourth gas spring valve is arranged on the fourth gas spring pipeline. The first gas spring valve, the second gas spring valve, the third gas spring valve and the fourth gas spring valve are controlled to control the lifting and lowering of the first gas spring, the second gas spring, the third gas spring and the fourth gas spring.

10. A vehicle, characterized in that: An air suspension system comprising any one of claims 1 to 9.

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