1204 results about "Air suspension" patented technology

The invention discloses an air suspension and ESC coordination control method and system based on deep learning, and belongs to the field of automobile braking, and the method comprises the following steps: S1, collecting historical data of vehicle driving, generating extreme working condition data by using vehicle dynamics simulation software, and forming a training data set; s2, constructing a double-branch fusion control model, and training the double-branch fusion control model; s3, vehicle state parameters and road surface condition data are collected in real time; s4, after feature extraction and fusion are carried out on the processed multi-source parameters, the trained double-branch fusion control model is input, and an optimal control strategy is generated; and S5, the ESC executes the optimal control strategy and collects vehicle state data after execution to form a control closed loop. By the adoption of the air suspension and ESC coordinated control method and system based on deep learning, the deep learning and the vehicle dynamics model are combined, the vehicle motion state can be monitored in real time, accurate control is conducted according to real-time data, and the potential out-of-control situation is avoided.

The invention provides a predictive maintenance method and system for an air suspension fan based on digital twinning, and the method comprises the steps: collecting an air flow abrupt change characteristic when high-temperature dust-containing waste gas flows into the air suspension fan, transmitting the air flow abrupt change characteristic to a digital twinning system, and determining the air flow abrupt change characteristic; extracting a local clearance reduction trend of the foil and the bearing from the non-uniform expansion amount of the foil, and calculating space distribution after clearance reduction to obtain a target gas film thickness value; the target gas film thickness value is compared with a preset collision and abrasion threshold value, and if the target gas film thickness value is smaller than the threshold value, the collision and abrasion risk probability is evaluated through a Monte Carlo method; if the collision and abrasion risk probability exceeds a preset safety range, calculating a gas film rigidity fluctuation range based on a gas dynamics theory; and extracting a vibration amplitude analysis result from the dynamic response parameters of the foil bearing of the air suspension fan, and calculating a stability prediction index.

The invention discloses a vehicle-mounted oxygen generation system, a vehicle system, a vehicle-mounted oxygen generation control system and a control method.The vehicle-mounted oxygen generation system comprises a shell, a molecular sieve and an oxygen storage tank, and the molecular sieve and the oxygen storage tank are arranged in the shell; the air inlet is configured to be connected with an air suspension air tank in a vehicle air suspension system outside the shell so as to provide air for the molecular sieve; one end of the air pipe is communicated with an outlet of the oxygen storage tank, the other end of the air pipe is configured to be communicated with a vehicle cab outside the shell, and a controllable electronic valve is arranged on the outlet of the oxygen storage tank or the air pipe. New configuration optimization is made based on an air compressor and an air storage tank of an existing vehicle air suspension system, the oxygen generation function is achieved on the basis that the original air suspension function of the system is protected, and the adverse effects on the available space and the loading capacity of a vehicle are greatly reduced.

The invention relates to the technical field of air supply unit testing of an air suspension, in particular to air supply unit testing equipment and a testing system of the air suspension, and the testing equipment comprises a high-low temperature damp-heat alternating testing box, four simulation air spring load devices, an industrial personal computer and a first testing air path; the simulated air spring load device is used for simulating the load of an automobile body on the air spring; the gas supply unit is used for testing in a test room of the high-low temperature damp-heat alternating test box, and the high-low temperature damp-heat alternating test box, the gas supply unit and the first test gas path are all controlled by the industrial personal computer; the first test gas circuit is used for testing the gas supply unit. According to the invention, the air supply unit to be tested of the air suspension is tested in a simulated extreme environment, and the weight is increased or decreased to simulate the load of the vehicle body on the air spring, so that the core capabilities of pressure-flow control, environmental adaptability, reliability and the like of the air supply unit are effectively and systematically verified. The verification of the air supply unit is directly related to the safety, comfort and durability of the automobile.

The invention relates to an air suspension controller function automation test system and a test method. The air suspension controller function automation test system comprises a cabinet which comprises a board card assembly and a real-time processor, and the board card assembly comprises an IO board card and a load board card; a tested air suspension controller; a real load; a CANoe software, a Notepad + + software and a MATLAB / Simulink software are operated on the upper computer; during working, the upper computer generates a control signal to trigger a test, the real-time processor sends an analog sensor signal, the controller calculates a target current, the shunt drives a real load and model update, and the controller generates an observation signal and returns the observation signal to the upper computer after a model state is fed back. The system and the method can realize full-working-condition automatic testing and improve the efficiency and the coverage range.

The invention relates to a height adjustment precision calibration method based on a steady-state air suspension system, which is characterized in that the method is static (not influenced by external force), and the pressure difference between the input end and the output end corresponding to the height of a certain air spring is constant (the input end is an air pump and an air storage tank during ascending, the output end is the air spring, and the input end and the output end are opposite during descending); when the sensor rises or falls to a certain target height, the overshoot is constant, and the descending adjustment threshold calibration process of the certain target height comprises the following steps: (1) rising and falling to Hi for many times, recording the height values hi drop 1, hi drop 2, hi drop 3,..., hi drop n (n can be determined by a tester, for example, n = 10) of the sensor after the adjustment is finished and the height is stable, and for a multi-air-spring system, determining the height of the sensor according to the height of the sensor; the absolute values of a plurality of height sensors can be calculated to serve as height adjustment results, a simpler model and a calibration method with higher operability are adopted, and the precision control over height adjustment is more direct and effective.

The invention discloses a heavy air suspension truck anti-roll control method based on an extended zero moment point, and the method comprises the following steps: S1, building a virtual prototype model of a heavy truck, and obtaining a centroid pitch angle, a roll angle, a yaw angle and accelerations in X, Y and Z directions under a vehicle driving condition in real time; s2, based on an extended zero moment point theory, constructing a vehicle body attitude evaluation index based on extended zero moment point coordinates; s3, calculating a vehicle body posture evaluation index in real time under the vehicle driving condition, and judging whether the vehicle rolls or not; and S4, on the basis of a layered architecture control strategy, the upper layer calculates air spring force needed by anti-roll based on fuzzy PID, the lower layer inflates and deflates the air spring to output the needed air spring force, and the posture of the vehicle body is balanced. According to the method, the stability of the vehicle body can be evaluated in real time through the extended zero moment point theory, the roll risk is accurately judged, anti-roll measures are taken, and the driving stability is remarkably improved.

The invention relates to a three-dimensional microgravity simulation system, and belongs to the field of spaceflight mechanism ground tests. According to the three-dimensional microgravity simulation system, ground six-degree-of-freedom microgravity simulation can be realized, the aircraft simulator and accessories thereof have a five-degree-of-freedom motion state on an air floating plane through the five-degree-of-freedom air floating platform, and the aircraft simulator can have a three-dimensional space six-degree-of-freedom motion state through the magnetic air suspension assembly. In the process of a ground microgravity experiment, the gravity of the movement of the aircraft and accessories thereof is unloaded by the magnetic suspension assembly, so that the movement interference of the aircraft simulator and the microgravity simulation tool is avoided, and the problem of dynamic high-precision gravity unloading is solved.

The invention discloses an air suspension turbine power generation and refrigeration integrated device which comprises a shell, a stator and a rotor spindle, the rotor spindle is rotationally arranged in the shell through a bearing assembly, the stator is fixed in the shell and is coaxial with the rotor spindle, and an air gap exists between the stator and the rotor spindle to form a permanent magnet synchronous generator. The rotor further comprises a first-stage volute, a second-stage volute, a first-stage radial flow turbine, a second-stage radial flow turbine, a volute connecting pipe and a cooling water jacket, the first-stage volute and the second-stage volute are fixed to the two ends of the shell respectively, and the first-stage radial flow turbine and the second-stage radial flow turbine are coaxially fixed to the two ends of the rotor spindle respectively and are arranged back to back; the first-stage radial flow turbine is located in the first-stage volute, the second-stage radial flow turbine is located in the second-stage volute, the first-stage volute is provided with a high-temperature and high-pressure air inlet and a first-stage air outlet, and the second-stage volute is provided with a second-stage air inlet and an expansion cooling air exhaust port; the device has the advantages of being capable of stably running at a high speed in a high-altitude low-pressure environment and simultaneously achieving efficient power generation and refrigeration functions.

The invention discloses a multi-parameter fusion air suspension heat pump AI load prediction energy-saving control method. The method comprises the following steps: constructing a multi-source heterogeneous parameter acquisition system and preprocessing data; fusing the parameter spatio-temporal features through a multi-head spatio-temporal feature extraction module embedded with an attention mechanism; establishing a load prediction model integrating a long-short-term memory network and thermodynamic physical constraints; on the basis of a model predictive control framework, a future control instruction is optimized under the condition that comfort and equipment safety constraints are met; an online learning and updating mechanism based on prediction error triggering is introduced, and the model weight is dynamically and finely adjusted to adapt to system characteristic changes. According to the technical scheme, the load prediction precision and the control response speed under the complex working condition are remarkably improved, the real-time optimization of the system energy efficiency is achieved, and the long-term operation stability is guaranteed.

The invention discloses a power-on self-test method and system for a closed air suspension system, and the method comprises the steps: starting self-test after receiving a vehicle power-on signal, opening an air path switching valve RV2 and an air escape valve VV, enabling a pressure sensor pipeline to be communicated with the atmosphere, and generating an initial air path detection result; based on the initial gas path detection result, closing a gas release valve VV and opening a gas path switching valve RV1 to enable a pressure sensor pipeline to be communicated with the gas storage tank, and generating a gas path detection result of the gas storage tank; on the basis of the air storage tank air path detection result, an air path switching valve RV1 is closed, all air spring distribution valves ASV1 to ASV2 are sequentially opened, and an air spring detection result is generated; and on the basis of the air spring detection result, all the distribution valves are closed, the air path switching valve RV2 is opened, the air pump is started, a pressure value is read after waiting for a preset time T4, when the pressure value is larger than a threshold P7, it is judged that the air pump is normal, and a system self-inspection result is generated. According to the embodiment of the invention, comprehensive self-inspection of the system can be quickly completed when the vehicle is powered on, and the reliability of the vehicle is improved.

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

The invention relates to the technical field of vehicle control, and discloses an adjusting method and device for a vehicle air suspension and a vehicle. Based on a deep learning model, the vehicle state is analyzed according to the vehicle running state parameters, and an air suspension adjusting instruction is generated; the adjustment instruction comprises an adjustment allowing instruction and an adjustment locking instruction; under the condition that the adjusting instruction is an allowed adjusting instruction, the air suspension is adjusted according to the allowed adjusting instruction; and under the condition that the adjusting instruction is the locking adjusting instruction, the air suspension is locked to be in the current state according to the locking adjusting instruction. The deep learning model can generate a corresponding adjustment instruction according to the vehicle operation condition with complex change, so that the response to various complex working conditions is realized, the performance of the air suspension is improved, and the stability and comfort of the vehicle are kept.

The invention provides a desiccant back flushing control method and device and an air suspension system.The method includes the steps that a controller of the air suspension system calculates the mass of air sucked from the outside by a high-pressure air tank according to the pressure value and the temperature value of the high-pressure air tank, and then the mass of the air sucked from the outside by the high-pressure air tank is calculated according to the maximum mass of the air capable of being adsorbed when the desiccant reaches the complete saturation state; the saturation rate of the drying agent is obtained, the state of the drying agent is judged based on the saturation rate, and when it is determined that the drying agent reaches the saturation state, the back flushing program is started. As the pressure value and the temperature value of the high-pressure air tank can be obtained by using the original pressure sensor and the original temperature sensor in the air suspension system, a humidity sensor and a flow sensor do not need to be additionally arranged, the system cost can be reduced, and the system reliability is improved. The saturation rate of the drying agent is judged by accurately calculating the mass of air accumulated by the air tank and sucked from the outside, and accurate control over back flushing of the drying agent can be achieved.

The invention discloses a control method for desiccant regeneration in an air suspension system. The control method comprises the steps that the current environment condition of the air suspension system is obtained; according to the environmental conditions, a blowback execution strategy corresponding to the environmental conditions is determined from a pre-stored control data set, and the control data set is obtained in advance on the basis of executing calibration tests of dynamic simulation working conditions under different environmental conditions; the dynamic simulation working condition is used for simulating consumption of compressed air in the actual vehicle running process; and in the operation process of the air suspension system, according to the back flushing execution strategy, the air suspension system is controlled to execute the back flushing action, so that regeneration of a drying agent in the air suspension system is achieved. Meanwhile, the invention further discloses an air suspension system, a control unit and a vehicle.

The invention discloses an air suspension dryer, and aims to solve the problems that the sealing effect is poor in the heating process of a traditional dryer, and the sealing performance and the heating effect of the dryer are affected. The air suspension dryer comprises a dryer body, a heating assembly and a heat insulation cover, and the dryer body and the heating assembly are located in the heat insulation cover; the heating assembly comprises a first insulating layer, a heating resistance layer and a second insulating layer, the first insulating layer, the heating resistance layer and the second insulating layer are sequentially arranged on the outer side of the dryer body, the heating resistance layer is connected with an external circuit, and a gap is formed between the second insulating layer and the heat insulation cover. The heating assembly is directly sintered or attached to the outer side of the dryer body, and the heating function and the drying function are highly integrated. The external heating assembly can prevent the initial structure of the dryer body from being changed, and the sealing performance of the dryer body is ensured. The general arrangement design is facilitated, and meanwhile, the production and assembly cost can be reduced.

The invention relates to a fluid control module, an air suspension system and a vehicle, the fluid control module comprises a module body, the module body is provided with an inlet, a first opening, a second opening and at least one channel, the first opening is suitable for being connected with first equipment using fluid, and the inlet is connected with the first opening through the channel; the inlet is connected with the second opening through a channel, the second opening is connected with the first opening through a channel, and the second opening is suitable for being connected with a fluid recovery device so that the fluid recovery device can recover fluid from the first device. The fluid control module is designed in an integrated mode, inflation, exhaust and gas recovery of the air suspension system can be achieved without a plurality of structures such as an air inlet valve, an air return valve and an exhaust valve, an air path of the air suspension system can be shortened, the number of parts is reduced, the structure of the air suspension system is simplified, and the compactness and the integration degree of the air suspension system are improved. Space occupied by the air suspension system is saved, and the space utilization rate of a vehicle is improved.

The invention belongs to the technical field of environment detection equipment, and particularly relates to an environment detection vehicle, a leveling method, a terminal and a storage medium, the environment detection vehicle comprises an undercarriage, a vehicle body arranged on the undercarriage and an air suspension arranged between the vehicle body and the undercarriage, a driving cabin and a working cabin are arranged in the vehicle body, and an environment detection platform is arranged in the working cabin; a vehicle body leveling mechanism is mounted at a girder of the undercarriage, and the vehicle body leveling mechanism and the air suspension are both connected with a master controller in the environment detection platform; according to the environment detection vehicle, the vehicle body leveling mechanism is installed at the undercarriage girder and works in cooperation with the air suspension, and the environment detection vehicle can keep the height of the vehicle body stable and horizontal under various complex terrain conditions. By means of the design, vehicle body shaking caused by uneven ground is effectively reduced, it is ensured that the environment detection platform can obtain more accurate data in the operation process, and the accuracy and reliability of environment monitoring are improved.

The invention discloses a cross-domain coupling control method for an air suspension and an active stabilizer bar. The cross-domain coupling control method comprises the steps that a signal input layer collects and fuses data and transmits the data to a decision-making layer; the decision-making layer forms a control instruction based on a model predictive control algorithm, and comprises the steps of constructing an automobile three-degree-of-freedom coupling dynamic model, and iteratively solving a cost function minimum value in a rolling time domain to obtain the control instruction; the three-degree-of-freedom coupling dynamic model quantifies multi-dimensional motion association through a stiffness matrix off-diagonal term, can accurately predict the cross influence of air pressure adjustment of the air suspension on the roll motion, and provides a nonlinear prediction basis for model prediction control. According to the invention, by cooperating with the multi-dimensional dynamic signal and the dynamic arbitration control logic, the complex composite working condition is adapted, and the cooperative optimization of the vertical comfort, the roll stability and the pitching dynamic characteristic of the vehicle is realized.

The invention relates to the technical field of new energy automobile air suspensions, and particularly discloses a heat-resistant ozone-resistant air spring outer layer rubber material. The rubber material is prepared from natural rubber, chlorosulfonated polyethylene rubber, ethylene-vinyl acetate rubber, high-activity magnesium oxide, stearic acid, an anti-aging agent, microcrystalline wax, tert-butylphenol formaldehyde resin, reinforcing filler, a plasticizer, zinc oxide, a vulcanizing agent and an accelerant. The invention also discloses a preparation method of the sizing material. The heat-resistant ozone-resistant air spring outer layer rubber material disclosed by the invention has good heat resistance, cold resistance and ozone aging resistance, and also has the advantages of wide application environment range and long service life.

The utility model discloses a composite structure passenger car front air suspension which comprises two air bag supporting bases installed on an axle, air springs are installed on the tops of the air bag supporting bases, a shock absorber is installed on one side of each air bag supporting base, and a leaf rod spring is installed on the side, away from the shock absorber, of each air bag supporting base. Front supports are arranged at the ends of the sides, close to each other, of the two piece rod springs, the same upper longitudinal thrust rod is installed between the front supports and the corresponding air bag brackets, and the same transverse thrust rod is installed between the two air bag brackets. According to the sheet rod spring structure, the functions of a lower longitudinal thrust rod and a stabilizer bar are combined, the integration is higher, meanwhile, a stabilizer bar suspender and a suspender installation cross beam are omitted, the integration of suspension components is achieved, installation points are reduced, and the available space of the whole vehicle is increased.

Disclosed is a vehicle escape method. The method comprises: receiving an escape mode activation signal, and switching a vehicle traveling mode from a normal mode to an escape mode; acquiring an alternating driving frequency of a front electric motor group and a rear electric motor group in the escape mode; acquiring a pressure value of each air spring that is currently collected by an air suspension; on the basis of the pressure value of each air spring, calculating the current offset frequency of the air suspension, a driving power corresponding to the front electric motor group and a driving power corresponding to the rear electric motor group; controlling the air suspension to vertically oscillate according to the current offset frequency of the air suspension; and on the basis of the alternating driving frequency and the driving powers respectively corresponding to the front electric motor group and the rear electric motor group, alternately driving the front electric motor group and the rear electric motor group until an escape mode exit signal is received, such that a vehicle exits the escape mode and is switched to the normal mode. The method enables a vehicle to quickly escape in muddy road conditions, thereby improving the reliability of the vehicle. Also disclosed are a vehicle escape apparatus using the method, and an electronic device and a storage medium.

The invention discloses a humidity detection blowback regeneration control method, an air suspension system and a vehicle, and realizes dynamic monitoring of the state of a drying unit by detecting the humidity of gas flowing through the drying unit in real time. When the detected humidity exceeds a preset threshold value, the system automatically triggers a blowback regeneration program; and if the blowback frequency reaches the preset upper limit and the humidity still exceeds the standard, generating an abnormal alarm signal. The mechanism can dynamically adjust the blowback frequency according to the actual working condition to adapt to the requirements of different use scenes. Meanwhile, early recognition and early warning can be carried out on faults of the drying unit, damage to high-value assemblies in the system due to excessive moisture invasion is avoided, the overall reliability is improved, and the service life is prolonged.

The application relates to a vehicle body structure and a vehicle. The vehicle body structure comprises a longitudinal beam, a cross beam, a trunk, an air tank, an air pump and a rear suspension. The longitudinal beam and the cross beam are connected with each other, and the longitudinal beam and the cross beam are used for supporting other structural components of the vehicle body structure. The longitudinal beam extends into the trunk. The air pump is connected with the longitudinal beam extending into the trunk. The air pump and the air tank are arranged on both sides of the central axis of the vehicle body structure and are located close to the rear suspension. According to the embodiment of the application, the arrangement requirements of the air suspension air pump and the air tank can be met while the trunk space of the vehicle is expanded, and interference between the expanded space and other vehicle body structures of the vehicle is avoided.

The invention discloses a vehicle energy interaction method, device and system and a vehicle, and belongs to the technical field of vehicle control. The method comprises the steps of determining a target energy interaction mode based on driving parameters and environmental parameters of a vehicle; a first control signal and a second control signal are generated based on the target energy interaction mode, the first control signal is used for controlling the output power of a compression refrigerant flowing through the coupling compressor and the output power of compressed air, and the second control signal is used for controlling a reversing valve to be switched between a compressed air loop and a compression refrigerant loop; and cooperatively controlling a coupled compressor and a reversing valve according to the first control signal and the second control signal so as to execute an energy interaction operation between the thermal management system and the air suspension system indicated by the target energy interaction mode. The system structure of the whole vehicle is simplified, the hardware arrangement difficulty and cost are reduced, energy consumption is reduced, and therefore the energy utilization rate of the whole vehicle is increased.

The invention discloses a vehicle air suspension height compensation method, device and equipment and a storage medium. Firstly, the driving state of a target vehicle, the road surface unevenness and the current heights (including the heights of the right front air bag, the left front air bag, the right rear air bag and the left rear air bag) of four air bags can be obtained. The average height of the front axle is then calculated from the heights of the right front and left front airbags, and the compensated height of the front axle is determined in conjunction with the target airbag height. Then, the right front air bag and the left front air bag are adjusted according to the compensated height, and balance of the front axle is ensured. And for the rear axle, the driving state of the vehicle, the road surface unevenness, the target height of the air bags and the current height of the right rear air bag and the current height of the left rear air bag are considered, and then corresponding height compensation is conducted on the two air bags of the rear axle. When the vehicle runs on different road shoulders, height compensation control between the air bags can be achieved, so that the heights of the four air bags are effectively coordinated, it is ensured that the vehicle body is kept balanced, and then driving safety and comfort are improved.

The invention belongs to the technical field of testing, and discloses an automatic testing method and system for an air suspension, and the method comprises the steps: obtaining a vibration testing signal of the air suspension; performing multi-mode decomposition on the vibration test signal based on an empirical mode decomposition algorithm to obtain a plurality of intrinsic mode components; performing screening processing on the plurality of intrinsic mode components to obtain a plurality of processed intrinsic mode components; constructing key features based on the plurality of processed intrinsic mode components; the key features are input into a suspension fault test model for fault test, a test result is obtained, and the test result comprises the probability that the air suspension breaks down and the corresponding fault type; wherein the suspension fault test model is constructed based on transfer learning. The method has the advantages that the real-time performance is high, early hidden faults can be positioned, and the model is high in generalization ability, high in test efficiency, high in fault test accuracy and the like.

The invention belongs to the technical field of light passenger car manufacturing and assembling, and particularly relates to a self-adaptive transmission structure of an electric power steering gear and a steering pull rod, which comprises a steering column, an electric power steering gear body, a power motor, a speed reducing mechanism, the steering pull rod and a self-adaptive adjusting assembly. According to the self-adaptive power-assisted steering system, the stress and displacement change of the steering pull rod is detected through the sensor, and the controller adjusts the power-assisted motor accordingly to realize self-adaptive power-assisted steering. The speed reducing mechanism adopts multi-stage gear transmission, the length of a steering pull rod is adjustable, and the angle of a steering column is adjustable; the lubricating system automatically lubricates key parts, the controller has multiple steering modes and is in linkage with the air suspension, steering comfort, transmission efficiency and system reliability are improved, cooperative work of a chassis system is achieved, and the advantages of being convenient to install and maintain, high in compatibility and the like are achieved.

The utility model provides gas compression equipment, an air suspension and a vehicle. The gas compression apparatus includes a cylinder and a piston member. The air cylinder comprises a cylinder body and an end cover. The end cover is connected to one end, in the first direction, of the cylinder body and defines a first cavity with the cylinder body. An air outlet is formed in the other end of the cylinder body in the first direction. A first air inlet channel is formed in the end cover. The piston piece is movably connected to the first cavity in the first direction. A first compression chamber and a second compression chamber are defined by the piston piece and the air cylinder. The first compression chamber communicates with the outside of the air cylinder through the first air inlet channel. The second compression chamber is communicated with the air outlet. A ventilation channel is formed in the piston piece. The air duct communicates with the first compression chamber and the second compression chamber. The structure of the piston piece is simplified, and therefore the machining difficulty of the piston piece can be reduced.

The utility model relates to the technical field of automobile parts, and provides a valve for an air suspension system, which comprises an air inlet and an air inlet cavity which are separated from each other, and the air inlet cavity leads to an air outlet of the valve for the air suspension system through a valve cavity of the valve for the air suspension system; the inflation valve is arranged in a path from the air inlet to the air inlet cavity, the inflation valve comprises an air path plate, the air path plate is provided with a first air path and a second air path, the first air path is communicated with the air inlet, and the second air path is communicated with the air inlet cavity; and the sealing assembly is assembled with the gas circuit board, and the sealing assembly can open a communication space communicating the first gas circuit and the second gas circuit under the action of the gas pressure of the first gas circuit and seal the communication space in a natural state. According to the valve for the air suspension system, the air inlet and the air inlet cavity of the valve are separated, and the inflation valve is arranged between the air inlet and the air inlet cavity, so that enough air supply pressure is ensured to be conveyed to the air inlet cavity; the inflation valve is integrally arranged in the valve piece, so that the stability of an air path is ensured, and the pipeline connection of the valve piece is not influenced.