An electronically controlled air suspension system with noise reduction function and vehicle

Abstract

The application provides an electric control air suspension system with a noise reduction function and a vehicle, which comprises: an air pump, an air suction end of the air pump sucking air, and an air outlet end of the air pump outputting compressed high-pressure gas; an isolation cover covering the air pump to form a closed space outside the air pump, the air suction end of the air pump sucking air through a first through hole formed on the isolation cover; a gas storage tank, an air inlet of the gas storage tank being communicated to the air outlet end through a first conveying pipeline passing through a second through hole formed on the isolation cover, and an air outlet of the gas storage tank being communicated to the inside of the isolation cover through a third conveying pipeline passing through a third through hole formed on the isolation cover; a first pressure regulating valve arranged on the third conveying pipeline and used for reducing and cooling the high-pressure gas output by the gas storage tank to obtain first gas; an electromagnetic valve arranged on the third conveying pipeline and used for controlling the conveying of the first gas to the inside of the isolation cover; and a first throttle valve arranged at a fourth through hole of the isolation cover and used for discharging the gas in the inside of the isolation cover.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle noise reduction, in particular to an electric control air suspension system with noise reduction function and a vehicle. BACKGROUND

[0002] The electric control air suspension system precisely controls the expansion and contraction of the air springs at the four corners of the vehicle body by external air pressure, not only realizes the active adjustment function of the vehicle body height, but also effectively solves the chassis posture stability problem under complex driving conditions such as load fluctuation, vehicle pitching and rolling, etc. One of the core components of the electric control air suspension system is the air source subsystem, which supplies pure and dry high-pressure gas to the air spring to ensure the continuous and efficient operation of the suspension system.

[0003] However, as a key component of the air source subsystem, the air pump often accompanies noise transmission during operation, and high-frequency operation is prone to overheating challenges. Current technologies focus on optimizing the structure of the air pump to reduce noise, but it is difficult to achieve good heat dissipation of the air pump while reducing noise. SUMMARY

[0004] Therefore, the purpose of the present application is to provide an electric control air suspension system with noise reduction function and a vehicle to overcome the problem that noise reduction and heat dissipation of the air pump cannot be considered simultaneously.

[0005] In a first aspect, the present application provides an electric control air suspension system with noise reduction function, which comprises: an air pump, the air pump sucks air at the air suction end, and outputs compressed high-pressure gas at the air outlet end; an isolation cover covering the air pump to form a closed space outside the air pump, the air suction end of the air pump sucking air through a first through hole formed on the isolation cover; a gas storage tank, the gas inlet of the gas storage tank is connected to the air outlet end of the air pump through a first conveying pipeline passing through a second through hole formed on the isolation cover, the gas outlet of the gas storage tank conveying the high-pressure gas to the air spring through a second conveying pipeline, and the gas outlet of the gas storage tank also communicating to the inside of the isolation cover through a third through hole formed on the isolation cover through a third conveying pipeline; a first pressure regulating valve arranged on the third conveying pipeline for reducing and cooling the high-pressure gas output by the gas storage tank to convey the first gas after reducing and cooling to the inside of the isolation cover; an electromagnetic valve arranged on the third conveying pipeline close to the third through hole for controlling the conveying of the first gas to the inside of the isolation cover; and a first throttling valve arranged outside the isolation cover close to a fourth through hole formed on the isolation cover for discharging the gas in the inside of the isolation cover.

[0006] In one possible implementation, the isolation cover is a double-layer structure, each layer of the double-layer structure is made of glass, and the interlayer of the double-layer structure is filled with inert gas.

[0007] In a possible implementation, the system further comprises: a gas pump mounting bracket arranged inside the isolation cover, one end of the gas pump mounting bracket being fixed to the vehicle body floor, the other end of the gas pump mounting bracket being used for fixing a supporting leg of the gas pump to form a gap between the bottom of the gas pump and the other end of the gas pump mounting bracket; and a vibration isolation bushing arranged in the gap, one end of the vibration isolation bushing being connected to the other end of the gas pump mounting bracket, the other end of the vibration isolation bushing being connected to the bottom of the gas pump.

[0008] In a possible implementation, the system further comprises: a temperature sensor arranged on an inner wall of the isolation cover and configured to detect an internal temperature value of the isolation cover; and an electronic controller configured to perform the following processing: comparing the internal temperature value detected by the temperature sensor with a temperature threshold value; and if the internal temperature value exceeds the temperature threshold value, controlling the electromagnetic valve and the first throttle valve to be opened simultaneously to cause the first gas to be delivered to the inside of the isolation cover and cause the internal gas of the isolation cover to be discharged through the first throttle valve.

[0009] In a possible implementation, the third through hole is arranged at a position close to the vehicle body floor on a first side of the isolation cover, the fourth through hole is arranged at a position close to the vehicle body floor on a second side of the isolation cover, the first side and the second side are opposite to each other, and / or the gas pressure of the first gas is higher than the air pressure, so that the internal gas of the isolation cover is discharged from the first throttle valve under the action of the first gas when the electromagnetic valve and the first throttle valve are opened simultaneously.

[0010] In a possible implementation, the system further comprises: an air filter arranged on the first delivery pipeline and between the second through hole and the air inlet of the gas tank, and configured to perform filtering processing on the high-pressure gas; and a check valve arranged on the first delivery pipeline and between the air filter and the air inlet of the gas tank, and configured to deliver the high-pressure gas filtered by the air filter to the gas tank in a one-way manner.

[0011] In a possible implementation, the second conveying pipeline includes a main pipeline and four branch pipelines, the air springs include four, and the system further includes: an intake and exhaust electromagnetic valve group, an intake of the intake and exhaust electromagnetic valve group being communicated to an air outlet of the gas tank via the main pipeline, four exhaust outlets of the intake and exhaust electromagnetic valve group being respectively communicated to an air spring via a corresponding branch pipeline, a second pressure regulating valve being arranged on the main pipeline and used for reducing and cooling high-pressure gas output by the gas tank, and the second pressure regulating valve being used for conveying second gas after reduction and cooling to the air springs via the intake and exhaust electromagnetic valve group and the branch pipelines, wherein the electronic controller controls the second pressure regulating valve to be opened when the air pump is started.

[0012] In a possible implementation, the system further includes: four on-off valves, each of which is arranged on a corresponding branch pipeline and used for controlling conveying of the second gas to a corresponding air spring.

[0013] In a possible implementation, the electronic controller is further configured to: control the first pressure regulating valve and the second pressure regulating valve to be opened simultaneously when it is determined that the air pump is started; and control the electromagnetic valve and the first throttle valve to be opened simultaneously when it is determined that the internal temperature value exceeds the temperature threshold.

[0014] In a second aspect, the present application provides a vehicle, which includes: the electronically controlled air suspension system with a noise reduction function according to any of the first aspect; and an air spring used for controlling a body height of the vehicle based on high-pressure gas conveyed by the gas tank as an elastic medium.

[0015] The present application provides an electronically controlled air suspension system with a noise reduction function and a vehicle, which includes: an air pump, an air suction end of the air pump being used for sucking air, and an air outlet end of the air pump being used for outputting compressed high-pressure gas; an isolation cover, the isolation cover being used for covering the air pump to form a closed space outside the air pump, the air suction end of the air pump being used for sucking air through a first through hole formed in the isolation cover; a gas tank, an air inlet of the gas tank being communicated to the air outlet end of the air pump via a first conveying pipeline passing through a second through hole formed in the isolation cover, and an air outlet of the gas tank being communicated to an inside of the isolation cover via a third conveying pipeline passing through a third through hole formed in the isolation cover; a first pressure regulating valve, the first pressure regulating valve being arranged on the third conveying pipeline and used for reducing and cooling high-pressure gas output by the gas tank to obtain first gas after reduction and cooling; an electromagnetic valve, the electromagnetic valve being arranged on the third conveying pipeline and used for controlling conveying of the first gas to the inside of the isolation cover; and a first throttle valve, the first throttle valve being arranged at the fourth through hole of the isolation cover and used for discharging gas in the inside of the isolation cover.

[0016] In order to make the above objectives, characteristics and advantages of the present application more apparent and comprehensible, the following will specifically describe a preferred embodiment in combination with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be regarded as limiting the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0018] Figure 1 A structural schematic diagram of the electronically controlled air suspension system with noise reduction function provided by the embodiments of the present application;

[0019] Figure 2 A flowchart of the control method of the electronically controlled air suspension system with noise reduction function provided by the embodiments of the present application. DETAILED DESCRIPTION

[0020] In order to make the purposes, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. It should be understood that the drawings in the present application only serve the purpose of illustration and description, and do not limit the scope of protection of the present application. In addition, it should be understood that the schematic drawings are not drawn according to the actual proportions. The flowchart shows the operations implemented according to some embodiments of the present application. It should be understood that the operations of the flowchart can not be implemented in sequence, and the steps without logical context relationship can be reversed in sequence or implemented simultaneously. In addition, one or more other operations can be added to the flowchart or removed from the flowchart by those skilled in the art under the guidance of the content of the present application.

[0021] In addition, the described embodiments are only some of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0022] In order to enable those skilled in the art to use the content of the present application, the following implementation is given in combination with the specific application scenario "vehicle noise reduction". For those skilled in the art, the general principles defined herein can be applied to other embodiments and application scenarios without departing from the spirit and scope of the present application.

[0023] It is worth noting that one of the core components of the electric control air suspension, the air supply subsystem, is specially designed to supply pure, dry high-pressure gas to the air spring, ensuring the continuous and efficient operation of the suspension system. The air pump, as a key component of the air supply subsystem, is prone to transmitting vibrations and noise during operation. Since the air pump works frequently and is prone to overheating, it is generally not used with sound wrapping to reduce noise, but rather through simple optimization of the air pump structure, installation point vibration isolation, and other measures to achieve vibration and noise reduction. However, the above measures have poor noise isolation effect on the air pump, and cannot achieve acoustic wrapping noise reduction while achieving good heat dissipation of the air pump.

[0024] Based on the above problems, the embodiments of the present application provide an electric control air suspension system with noise reduction function and a vehicle to solve the problem that the existing vehicle noise reduction technology cannot simultaneously achieve noise reduction and good heat dissipation during air pump operation.

[0025] In order to facilitate the understanding of the present application, the technical solutions provided by the present application will be described in detail below in conjunction with specific embodiments. Please refer to Figure 1 , Figure 1 The structure diagram of the electric control air suspension system with noise reduction function provided by the embodiments of the present application is shown in the figure. The electric control air suspension system includes an air pump 12, an isolation cover 7, an air tank 19, a first pressure regulating valve 18, a solenoid valve 15 and a first throttle valve 9.

[0026] The air pump 12 sucks air from the surrounding environment through the suction end 8, and converts the sucked air into high-pressure gas through the compression action of the internal mechanical structure, and then outputs the high-pressure gas through the air outlet of the air pump 12. This process provides necessary power support for the vehicle.

[0027] The isolation cover 7 covers the air pump 12 to form a closed space outside the air pump 12. The suction end 8 sucks air through the first through hole formed on the isolation cover 7. The isolation cover 7 is a double-layer structure, and the material of each layer includes glass. Inert gas is filled between the interlayers of the double-layer structure.

[0028] In the embodiments of the present application, the main purpose of the isolation cover 7 is to form a closed space outside the air pump 12 to reduce the impact of noise, heat and vibration generated by the air pump 12 on the surrounding environment. The isolation cover 7 adopts a double-layer glass structure to enhance the heat and sound insulation performance. Inert gas, such as argon and krypton, is filled between the interlayers of the double-layer glass. Inert gas has the characteristics of low thermal conductivity and low sound propagation speed, so it can more effectively block the transmission of heat and sound.

[0029] The gas inlet of the gas tank 19 is connected to the gas outlet of the air pump 12 through a second through hole formed on the isolation cover 7 via a first conveying pipeline, the gas outlet of the gas tank 19 is connected to the air spring 1 via a second conveying pipeline, and the gas outlet of the gas tank 19 is also connected to the inside of the isolation cover 7 via a third through hole formed on the isolation cover 7 via a third conveying pipeline, and the first pressure regulating valve 18 is arranged on the third conveying pipeline and used for reducing the pressure and cooling the high-pressure gas output by the gas tank 19 to convey the first gas after the pressure reduction and cooling to the inside of the isolation cover 7.

[0030] In the embodiment of the application, the third conveying pipeline is a heat dissipation manifold 20, which is used for dissipating and leading out heat from a heat source to achieve heat dissipation of the high-pressure gas after the pressure reduction and cooling. In the electrically controlled air suspension system, the pressure switch 21 is arranged on the tank opening of the gas tank 19. When the vehicle is normally started, the pressure switch 21 starts to work immediately and continuously monitors whether the air pressure in the gas tank 19 reaches a preset threshold value. If the air pressure in the gas tank 19 is lower than 120 PSI (pounds per square inch), the pressure switch 21 is opened to form a conductive path, and the air pump 12 is triggered to work immediately, thereby increasing the air pressure in the gas tank 19. After receiving the working instruction, the air pump 12 starts to generate compressed air. As the air pressure in the gas tank 19 gradually rises, when reaching or exceeding 150 PSI, the pressure switch 21 is closed to form an open circuit, and the air pump 12 loses power supply and stops working, thereby preventing the air pressure in the gas tank 19 from being too high. In addition, the temperature switch 6 is arranged on the air pump 12. When the air pump 12 is overheated due to some reasons during the working process, the temperature switch 6 responds immediately to force the air pump 12 to stop working. The electromagnetic valve 15 is arranged on the third conveying pipeline and close to the third through hole, which is used for controlling the delivery of the first gas to the inside of the isolation cover 7. The first throttle valve 9 is arranged outside the isolation cover 7 and close to the fourth through hole formed on the isolation cover 7, which is used for discharging the gas in the inside of the isolation cover 7. In addition, the second throttle valve 13 is arranged at the gas outlet of the electromagnetic valve 15, which is used for unidirectionally delivering the first gas to the inside of the isolation cover.

[0031] In the embodiment of the application, the third through hole is arranged on the first side of the isolation cover 7 and close to the vehicle body floor 10, and the fourth through hole is arranged on the second side of the isolation cover 7 and close to the vehicle body floor 10. The first side and the second side are opposite to each other. The air pressure of the first gas is higher than that of the air, so that when the electromagnetic valve 15 and the first throttle valve 9 are opened at the same time, the gas in the inside of the isolation cover 7 is discharged from the first throttle valve 9 under the action of the first gas, and the heat dissipation of the air pump 12 is completed at the same time when the noise generated by the air pump 12 is blocked.

[0032] In a preferred example, the electric control air suspension system further comprises: a gas pump mounting bracket 13 and a vibration isolation bushing 11. The gas pump mounting bracket 13 is located inside the isolation cover 7, one end of the gas pump mounting bracket 13 is fixed to the vehicle body floor 10, and the other end of the gas pump mounting bracket 13 is used to fix the support foot of the gas pump 12 to form a gap between the bottom of the gas pump 12 and the other end of the gas pump mounting bracket 13, the vibration isolation bushing 11 is arranged in the gap, and one end of the vibration isolation bushing 11 is connected to the other end of the gas pump mounting bracket 13, and the other end of the vibration isolation bushing 11 is connected to the bottom of the gas pump 12.

[0033] In a possible implementation, the gas pump mounting bracket 13 is mainly used to provide a stable support platform for the gas pump 12 to ensure its stability during vehicle driving, one end of the gas pump mounting bracket 13 is fixed to the vehicle body floor 10, and the other end is connected to the support foot of the gas pump 12 through a suitable interface. This design not only effectively prevents the gas pump 12 from shaking or moving during vehicle driving, but also can withstand various forces and torques generated by the gas pump 12 during operation. The vibration isolation bushing 11 is a device for reducing vibration transmission, which is installed between the gas pump 12 and the mounting bracket. When the gas pump 12 operates, certain vibrations will be generated due to the reciprocating motion of the motor, piston and other components. If these vibrations are directly transmitted to the vehicle body or other components, it may adversely affect the comfort, stability and service life of the vehicle. The vibration isolation bushing 11 can absorb and disperse these vibration energies through its special material and structural design, thereby effectively reducing the impact of vibrations on the vehicle.

[0034] In a preferred example, the electric control air suspension system further comprises: a temperature sensor 5 and an electronic controller 23. The temperature sensor 5 is arranged on the inner wall of the isolation cover 7 for detecting the internal temperature value of the isolation cover 7.

[0035] In a possible implementation, Figure 2 The flowchart of the control method of the electric control air suspension system with noise reduction function provided by the embodiments of the present application is shown. Figure 2 The control method of the electric control air suspension system with noise reduction function shown is executed in the electronic controller 23.

[0036] As Figure 2 In step S101, it is judged whether the internal temperature value detected by the temperature sensor exceeds the temperature threshold.

[0037] Specifically, the temperature sensor 5 is a device capable of detecting the internal temperature of the isolation cover 7 and converting the temperature signal into a measurable electrical signal, which is installed on the inner wall of the isolation cover 7 for real-time detection of the temperature value inside the isolation cover 7.

[0038] If the internal temperature value exceeds the temperature threshold, step S102 is performed, in which the electromagnetic valve 15 and the first throttle valve 9 are controlled to be opened simultaneously.

[0039] Specifically, the electromagnetic valve 15 and the first throttle valve 9 are controlled to be opened simultaneously, so that the first gas is delivered to the interior of the glass cover, and the gas in the interior of the glass cover is discharged through the first throttle valve 9. The first gas has a higher air pressure than air, so that when the first gas flows from the electromagnetic valve 15 at the third through hole, it moves upward due to the hot air flow generated by the air pump 12 and exchanges heat with the air pump 12. The gas after heat exchange has a higher air pressure than air, so that the gas after heat exchange is discharged through the first throttle valve 9 at the fourth through hole.

[0040] If the internal temperature value does not exceed the temperature threshold, step S103 is performed, in which the electromagnetic valve 15 and the first throttle valve 9 are controlled to be closed or no change is made to the electromagnetic valve 15 and the first throttle valve 9.

[0041] In a preferred example, the electrically controlled air suspension system further comprises an air filter 16 and a one-way valve 17. The air filter 16 is arranged on the first delivery pipeline between the second through hole and the air inlet of the air tank 19, and is used for filtering the high-pressure gas. The one-way valve 17 is arranged on the first delivery pipeline between the air filter 16 and the air inlet of the air tank 19, and is used for unidirectionally delivering the high-pressure gas filtered by the air filter 16 to the air tank 19.

[0042] In a possible implementation, the main function of the air filter 16 is to filter water, impurities, particulate matter, etc. in the high-pressure gas, so as to keep the high-pressure gas dry and pure. The main function of the one-way valve 17 is to ensure the unidirectional flow of the high-pressure gas. It allows the high-pressure gas to flow from the air filter 16 to the air tank 19, but prevents the gas from flowing back from the air tank 19 to the air filter 16 or the upstream part of the first delivery pipeline.

[0043] In a preferred example, the electrically controlled air suspension system further comprises an air intake and exhaust electromagnetic valve group 28, a second pressure regulating valve 22, and four on-off valves 30. The inlet of the air intake and exhaust electromagnetic valve group 28 is connected to the air outlet of the air tank 19 via a main pipeline. Four air outlets of the air intake and exhaust electromagnetic valve group 28 are respectively connected to an air spring 1 via a corresponding branch pipeline. The second pressure regulating valve 22 is arranged on the main pipeline, and is used for reducing the pressure and temperature of the high-pressure gas output by the air tank 19. The second gas after the pressure reduction and temperature reduction is delivered to the air spring 1 via the air intake and exhaust electromagnetic valve group 28 and the branch pipelines. The four on-off valves 30 are respectively arranged on the corresponding branch pipelines. Each on-off valve 30 is used for controlling the delivery of the second gas to the corresponding air spring 1.

[0044] In a possible implementation, in a vehicle suspension system, the intake and exhaust electromagnetic valve group 28 is used to control the intake and exhaust of gas in the air spring 1, so as to realize the adjustment of the height of the vehicle body. When it is necessary to lift the height of the vehicle body, the intake valve of the intake and exhaust electromagnetic valve group 28 is opened, and the exhaust valve is kept closed. At this time, the external high-pressure gas enters the inside of the air spring 1 through the intake valve, so that the air spring 1 is inflated, and then the vehicle body is lifted to the required height. Conversely, when it is necessary to lower the height of the vehicle body, the operation of the intake and exhaust electromagnetic valve group 28 is reversed. The intake valve is closed, and the external gas is prevented from continuing to enter the air spring 1; at the same time, the exhaust valve is opened, and the gas in the air spring 1 is allowed to be discharged to the external environment through the exhaust valve under the action of the gravity of the vehicle body. In order to ensure that the process is smooth and reduce noise, the exhaust port of the intake and exhaust electromagnetic valve group 28 is provided with a third throttle valve 26 for adjusting the exhaust flow rate, so that the height of the vehicle body is stably lowered, and the noise generated when the exhaust fluid passes through the exhaust valve can be effectively eliminated. In addition, the intake and exhaust electromagnetic valve group 28 is also provided with an intake port air pressure sensor 27 and an exhaust port air pressure sensor 29, which are respectively connected to the intake port and the exhaust port of the intake and exhaust electromagnetic valve group 28. The intake port air pressure sensor 27 is used to monitor the air pressure of the intake port of the electromagnetic valve in real time, so as to ensure the accuracy and stability of the intake process; and the exhaust port air pressure sensor 29 not only monitors the air pressure change of the exhaust port, but also further promotes the stability of the lowering of the height of the vehicle body by adjusting the exhaust flow rate, and cooperates with the third throttle valve 26 to eliminate the noise problem in the exhaust process. In addition, the intake and exhaust electromagnetic valve group 28 adopts an on-off type switching electromagnetic valve. This electromagnetic valve has simple structure and rapid response, and can rapidly switch the gas on-off state, so as to meet the demand of rapid adjustment of the height of the vehicle body.

[0045] In a preferred example, the electrically controlled air suspension system further comprises: air springs 1, a height sensor 2, and an inclination sensor 31. The second delivery pipeline system is composed of one main pipeline and four branch pipelines 3. Each branch pipeline is connected to one air spring 1, and there are a total of four air springs 1. The four air springs 1 are independently controlled through the four exhaust ports of the intake and exhaust electromagnetic valve group 28, so that each spring can charge and discharge gas according to the demand, thereby realizing the lifting and lowering adjustment of the vehicle body. The height sensor 2 is arranged between the vehicle body and the swing arm, and the inclination sensor 31 is arranged in the middle of the floor of the vehicle body, for monitoring the pitch and roll angles of the vehicle body, and sending the change signal of the swing arm due to the change of the height of the vehicle body or the roll angle to the electronic controller, so as to provide key data support for the intelligent adjustment of the suspension system. Each air spring 1 is externally connected with an air pipe, and the air pipes are directly connected to the intake and exhaust electromagnetic valve group 28 to form a complete gas flow path. In addition, the air spring 1 also integrates a magneto-rheological damper, so that the suspension system can adjust the damping characteristics of the suspension in real time by controlling the size of the current according to the driving conditions or the demand of the driver.

[0046] In a preferred example, the electrically controlled air suspension system further comprises a storage battery 4, a relay 24 and a fuse box 25. The storage battery 4 is one of the energy sources of the electrically controlled air suspension system, which provides necessary power support for the air pump, solenoid valve 15 and other components in the system. After the vehicle is started, the storage battery 4 supplies power to each electrical equipment through the circuit system to ensure the normal operation of the suspension system. The relay 24 plays the role of switch and control in the electrically controlled air suspension system. According to the signal from the electronic controller 23, it controls the on-off of the solenoid valve 15 and other components, thereby realizing accurate control of the suspension system. The fuse box 25 is an important safety device in the electrically controlled air suspension system, which contains multiple fuses inside to protect each component in the circuit from the failure of current overload or short circuit.

[0047] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present application, which are used to illustrate the technical solutions of the present application, but not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can make modifications or easily think of changes to the technical solutions described in the foregoing embodiments, or make equivalent replacements to some technical features, within the technical scope disclosed by the present application. Such modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An electronically controlled air suspension system having a noise reduction function, characterized by, The system comprises: an air pump, an air suction end of which sucks air, and an air outlet end of which outputs compressed high-pressure gas; an isolation cover covering the air pump to form a closed space outside the air pump, the air suction end of the air pump sucking air through a first through hole formed on the isolation cover; a gas storage tank, an air inlet of which is connected to the air outlet end of the air pump through a first conveying pipeline passing through a second through hole formed on the isolation cover, an air outlet of which conveys the high-pressure gas to an air spring through a second conveying pipeline, and the air outlet of which is also connected to the inside of the isolation cover through a third conveying pipeline passing through a third through hole formed on the isolation cover; a first pressure regulating valve arranged on the third conveying pipeline to reduce and cool the high-pressure gas output by the gas storage tank, so as to convey the first gas after the reduction and cooling to the inside of the isolation cover; a solenoid valve arranged on the third conveying pipeline near the third through hole to control the conveying of the first gas to the inside of the isolation cover; a first throttle valve arranged outside the isolation cover near a fourth through hole formed on the isolation cover to discharge the gas in the inside of the isolation cover.

2. The system of claim 1, wherein, The isolation cover is a double-layer structure, each layer of which is made of glass, and the interlayer of the double-layer structure is filled with inert gas.

3. The system of claim 1, wherein, The system further comprises: an air pump mounting bracket located in the inside of the isolation cover, one end of the air pump mounting bracket being fixed to the vehicle body floor, and the other end of the air pump mounting bracket being used to fix the supporting leg of the air pump to form a gap between the bottom of the air pump and the other end of the air pump mounting bracket; a vibration isolation bushing arranged in the gap, one end of the vibration isolation bushing being connected to the other end of the air pump mounting bracket, and the other end of the vibration isolation bushing being connected to the bottom of the air pump.

4. The system of claim 1, wherein, The system further comprises: a temperature sensor arranged on the inner wall of the isolation cover to detect the internal temperature value of the isolation cover; an electronic controller configured to perform the following processing: comparing the internal temperature value detected by the temperature sensor with a temperature threshold value; if the internal temperature value exceeds the temperature threshold value, controlling the solenoid valve and the first throttle valve to be opened at the same time to make the first gas be conveyed to the inside of the isolation cover and make the gas in the inside of the isolation cover be discharged through the first throttle valve.

5. The system of claim 4, wherein, The third through hole is arranged at the first side of the isolation cover near the vehicle body floor, the fourth through hole is arranged at the second side of the isolation cover near the vehicle body floor, the first side and the second side are opposite to each other, and / or, the gas pressure of the first gas is higher than the air pressure, so that when the solenoid valve and the first throttle valve are opened at the same time, the gas in the inside of the isolation cover is discharged from the first throttle valve under the action of the first gas.

6. The system of claim 1, wherein, The system further comprises: an air filter arranged on the first conveying pipeline between the second through hole and the air inlet of the gas storage tank to filter the high-pressure gas. A one-way valve is arranged on the first conveying pipeline between the air filter and the air inlet of the air tank, and is configured to convey the high-pressure gas filtered by the air filter to the air tank in a one-way manner.

7. The system of claim 4, wherein, The second conveying pipeline includes a main pipeline and four branch pipelines, and the air springs include four air springs. The system further includes an air inlet and outlet electromagnetic valve group, an inlet of the air inlet and outlet electromagnetic valve group being connected to the air outlet of the air tank via the main pipeline, and four air outlets of the air inlet and outlet electromagnetic valve group being connected to the four air springs via the four branch pipelines, respectively. A second pressure regulating valve is arranged on the main pipeline, and is configured to reduce the pressure and temperature of the high-pressure gas output by the air tank, so as to convey the second gas after the pressure and temperature reduction to the air springs via the air inlet and outlet electromagnetic valve group and the branch pipelines.

8. The system of claim 7, wherein, The electronic controller is configured to control the second pressure regulating valve to be opened when the air pump is started. The system further includes:

9. The system of claim 7, wherein, Four on-off valves are arranged on the four branch pipelines, respectively, and each of the on-off valves is configured to control the conveying of the second gas to the corresponding air spring. The electronic controller is further configured to: control the first pressure regulating valve and the second pressure regulating valve to be opened simultaneously when it is determined that the air pump is started; and 10. A vehicle characterized by comprising: control the electromagnetic valve and the first throttle valve to be opened simultaneously when it is determined that the internal temperature value exceeds the temperature threshold. The vehicle includes: The electronically controlled air suspension system with noise reduction function according to any one of claims 1-9; and The air springs are configured to control the height of the vehicle body based on the high-pressure gas conveyed by the air tank as an elastic medium.

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