Air suspension system

Abstract

The utility model provides an air suspension system, and relates to the field of vehicles, and the air suspension system comprises an air suspension used for adjusting the height of a vehicle body; the drying agent heating module is used for heating a drying agent, and the drying agent is used for drying air in the environment where the air suspension is located; the drying agent heating module comprises an exhaust pipe, a first electromagnetic valve, an exhaust branch pipe and a drying agent cylinder. Wherein one end of the exhaust pipe is connected with a vehicle engine, and the exhaust pipe is used for receiving gas generated by the engine; the other end of the exhaust pipe is connected with one end of the electromagnetic valve, the other end of the electromagnetic valve is connected with the exhaust branch pipe, the electromagnetic valve is used for leading gas in the exhaust pipe into the exhaust branch pipe when opened, the exhaust branch pipe is adjacent to the drying agent barrel, and the drying agent barrel is used for containing drying agents. And the exhaust branch pipe is used for heating the drying agent in the drying agent cylinder by utilizing gas in the exhaust branch pipe. Therefore, the drying agent in the air suspension can be recycled.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicles, in particular to an air suspension system. BACKGROUND

[0002] With the development of the field of vehicles, people's demand for comfortable travel is getting higher and higher. In order to meet people's high demand for comfortable travel, air suspension systems are gradually widely used in vehicles. The advantage of the air suspension system is that the air volume of the air spring can be changed through the air supply system according to different driving conditions and requirements, so as to lift or lower the height of the vehicle body and the suspension stiffness, thereby meeting the comfort requirements of the passengers.

[0003] However, the gas supplied to the inside of the air suspension has a great influence on the service life of the air suspension, especially in the case of high water content in the air, the corrosion of the air spring bag skin and other metal parts is more serious, which can accelerate the rusting and aging of the air suspension system, thereby affecting the service life of the air suspension. Therefore, it is particularly important to ensure the dryness of the gas supplied to the inside of the air suspension.

[0004] In the currently known air suspension system, the water in the gas is adsorbed by a drying device before the air enters the air suspension system, so as to ensure the dryness of the gas. However, the adsorption effect of the drying agent has an upper limit, and when the drying agent reaches water saturation or approaches saturation, the drying effect will be greatly reduced or even lost. CONTENT OF THE INVENTION

[0005] The present application provides an air suspension system to realize the recycling of the drying agent in the air suspension system.

[0006] In a first aspect, an air suspension system is provided, comprising: an air suspension for adjusting the height of a vehicle body and a drying agent heating module for heating a drying agent for drying air in an environment in which the air suspension is located; the drying agent heating module comprises: an exhaust pipe, a first electromagnetic valve, an exhaust branch pipe and a drying agent cylinder; wherein one end of the exhaust pipe is connected to a vehicle engine, and the exhaust pipe is used to receive gas generated from the engine; the other end of the exhaust pipe is connected to one end of the first electromagnetic valve, and the other end of the first electromagnetic valve is connected to the exhaust branch pipe, the first electromagnetic valve is used to introduce the gas in the exhaust pipe into the exhaust branch pipe when the first electromagnetic valve is opened, the exhaust branch pipe is adjacent to the drying agent cylinder, the drying agent cylinder is used to contain the drying agent, and the exhaust branch pipe is used to heat the drying agent in the drying agent cylinder by using the gas in the exhaust branch pipe.

[0007] An engine is a broad term that refers to any device capable of converting energy into mechanical energy. It can include various types of energy conversion devices. There are many types of engines, such as internal combustion engines, electric motors, steam engines, jet engines, etc.

[0008] Among them, the internal combustion engine is a specific type of engine that can produce mechanical energy by burning fuel (such as gasoline, diesel, natural gas, etc.). The combustion process occurs in the combustion chamber inside the engine, where the fuel is ignited after mixing with air, producing high-temperature and high-pressure gases that can push the piston or turbine to rotate, thereby generating mechanical energy. Internal combustion engines are the main power source for traditional cars, motorcycles, ships and many other mechanical devices.

[0009] It can be understood that the internal combustion engine is a specific type of engine. All internal combustion engines are engines, but not all engines are internal combustion engines.

[0010] Electric motors (can be referred to as electric machines), steam engines, etc. are also engines, but they achieve mechanical energy output through different energy conversion methods than internal combustion engines.

[0011] It can be understood that taking the internal combustion engine as an example of an engine, the gases produced by the internal combustion engine are hot, mainly due to the energy released when the fuel burns inside the engine. This includes but is not limited to the following reasons:

[0012] 1. Internal combustion engines usually use gasoline, diesel, natural gas or other fuels, which are mixed with air and ignited in the combustion chamber of the engine. Combustion is an exothermic reaction, and chemical energy is converted into heat energy, causing the temperature of the combustion products (mainly gases) to rise significantly;

[0013] 2. In the internal combustion engine, the piston compresses the air and fuel mixture, which causes the temperature to rise. The higher temperature after compression helps the fuel to ignite and burn more efficiently, further increasing the temperature of the gases;

[0014] 3. The internal combustion engine converts the chemical energy of the fuel into mechanical energy, but this process is not 100% efficient. Some of the energy is released in the form of heat;

[0015] 4. The high-temperature and high-pressure gases produced after combustion push the piston to do work, and then these gases are expelled through the exhaust system. During the exhaust process, the gases still maintain a high temperature until they are cooled to the surrounding environment through the exhaust pipe. These factors together cause the exhaust gases from the engine to be hot. This hot gas is not only a byproduct of the energy conversion process, but also an important consideration in engine design and efficiency optimization.

[0016] As another example of a motor as an engine, the motor works differently from an internal combustion engine, and the motor does not directly generate gas during operation. The motor is driven by electric energy and does not involve fuel combustion, so it does not emit exhaust gas like an internal combustion engine. However, the motor still generates heat when it is working.

[0017] Therefore, based on the above technical solution, the dry agent can be heated by using the hot air generated by the engine or the hot air around the engine. When the dry agent is heated, the water will be atomized from the dry agent, thereby realizing the cyclic regeneration of the dry agent.

[0018] In combination with the first aspect, in some possible implementations, the first electromagnetic valve is opened when the air suspension is in an exhaust mode.

[0019] In combination with the first aspect, in some possible implementations, the first electromagnetic valve is closed when the air suspension is not in the exhaust mode.

[0020] In combination with the first aspect, in some possible implementations, the exhaust mode can include an active exhaust mode and / or a passive exhaust mode.

[0021] Optionally, the air suspension includes a second electromagnetic valve, a check valve, a controller, an air tank, a third electromagnetic valve, and a compressor assembly; and the exhaust mode includes an active exhaust mode, in which the third electromagnetic valve and the second electromagnetic valve are opened to cause the gas in the air tank to be discharged into an environment in which the air suspension is located via the third electromagnetic valve, the compressor assembly, the check valve, the dry agent cylinder, and the second electromagnetic valve, so as to remove the water in the dry agent; wherein the opening and closing of the third electromagnetic valve and the second electromagnetic valve are controlled by the controller.

[0022] Optionally, the air suspension includes a second electromagnetic valve, a check valve, a controller, an air spring, a fourth electromagnetic valve, and a compressor assembly; and the exhaust mode includes a passive exhaust mode, in which the fourth electromagnetic valve and the second electromagnetic valve are opened to cause the gas in the air spring to be discharged into an environment in which the air suspension is located via the fourth electromagnetic valve, the compressor assembly, the check valve, the dry agent cylinder, and the second electromagnetic valve, so as to remove the water in the dry agent; wherein the opening and closing of the fourth electromagnetic valve and the second electromagnetic valve are controlled by the controller.

[0023] Optionally, the air suspension comprises a second electromagnetic valve, a throttle check valve, a controller, an air tank, a third electromagnetic valve, an air spring, a fourth electromagnetic valve and a compressor assembly; and the air exhaust mode comprises an active air exhaust mode and a passive air exhaust mode; wherein, in the active air exhaust mode, the third electromagnetic valve and the second electromagnetic valve are opened to make the gas in the air tank exhaust to the environment where the air suspension is located via the third electromagnetic valve, the compressor assembly, the throttle check valve, the desiccant cartridge and the second electromagnetic valve, so as to take away the moisture in the desiccant; in the passive air exhaust mode, the fourth electromagnetic valve and the second electromagnetic valve are opened to make the gas in the air spring exhaust to the environment where the air suspension is located via the fourth electromagnetic valve, the compressor assembly, the throttle check valve, the desiccant cartridge and the second electromagnetic valve, so as to take away the moisture in the desiccant; wherein, the opening and closing of the third electromagnetic valve, the fourth electromagnetic valve and the second electromagnetic valve are controlled by the controller.

[0024] With reference to the first aspect, in some possible implementation manners, the desiccant heating module further comprises a humidity sensor located in the desiccant cartridge, and the humidity sensor is configured to measure the humidity of the desiccant.

[0025] With reference to the first aspect, in some possible implementation manners, the air suspension comprises a controller configured to acquire the humidity of the desiccant measured by the humidity sensor.

[0026] By monitoring the humidity of the desiccant, the desiccant can be dried in a suitable case, and the desiccant can be dried in a case of demand, so that the air amount in the air suspension can be saved, and the service life of the air suspension can be improved.

[0027] With reference to the first aspect, in some possible implementation manners, when the humidity of the desiccant is greater than or equal to a humidity threshold, the controller is further configured to remind a user to start the active air exhaust mode.

[0028] Optionally, the reminding manner of the controller to the user that the active air exhaust mode has been started can comprise, but is not limited to, any one or at least two of the following in combination: displaying a prompt text on a display screen in the vehicle; or, prompting by voice; or, displaying a prompt text on the front windshield by a head-up display. The present application does not make any limitation in this regard.

[0029] In this way, the water in the desiccant in the desiccant cylinder can be taken away by the gas in the air spring while the gas from the engine is used to heat the desiccant in the desiccant cylinder to evaporate the water in the desiccant, so that the circulation regeneration speed of the desiccant can be improved. That is, when the desiccant is heated, the water in the desiccant is atomized, and at this time, the atomized water is discharged into the ambient air by the gas in cooperation with the exhaust gas, so that the regeneration efficiency of the desiccant can be improved.

[0030] In addition, it can be understood that in the case that the active exhaust mode is started, there may be some noise. In order to avoid the driver from being frightened or feeling puzzled due to the unknown reason of the noise, the user is reminded that the active exhaust mode has been started in the case that the active exhaust mode is started, so that the user experience can be improved.

[0031] In combination with the first aspect, in some possible implementation manners, in the case that the humidity of the desiccant is greater than or equal to the humidity threshold, the controller is further configured to start the active exhaust mode and remind the user that the active exhaust mode has been started.

[0032] In this way, the water in the desiccant in the desiccant cylinder can be taken away by the gas in the air spring while the gas from the engine is used to heat the desiccant in the desiccant cylinder to evaporate the water in the desiccant, so that the circulation regeneration speed of the desiccant can be improved. That is, when the desiccant is heated, the water in the desiccant is atomized, and at this time, the atomized water is discharged into the ambient air by the gas in cooperation with the exhaust gas, so that the regeneration efficiency of the desiccant can be improved.

[0033] In combination with the first aspect, in some possible implementation manners, the controller is further configured to start the active exhaust mode in response to an operation of the user.

[0034] In combination with the first aspect, in some possible implementation manners, the air suspension can further include a height sensor, which can be configured to measure the suspension height of the vehicle and feed data to the controller. The height sensor is usually installed on each suspension point of the vehicle.

[0035] In combination with the first aspect, in some possible implementation manners, the air suspension can further include a shock absorber, which can be used in cooperation with the air spring to provide a shock absorption function for the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is an exemplary block diagram of an air suspension system provided by an embodiment of the present application;

[0037] Figure 2 is another exemplary block diagram of an air suspension system provided by an embodiment of the present application;

[0038] Figure 3 is another exemplary block diagram of the air suspension system provided by the embodiments of the present application;

[0039] Figure 4 is another exemplary block diagram of the air suspension system provided by the embodiments of the present application;

[0040] Figure 5 is another exemplary block diagram of the air suspension system provided by the embodiments of the present application. DETAILED DESCRIPTION

[0041] The technical solutions in the present application will be described below with reference to the drawings.

[0042] First, in the present application, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, for example, an apparatus, system, product or device including a series of modules, modules or units does not have to be limited to those clearly listed, but can include other modules, modules or units that are not clearly listed or inherent to the apparatus, system, product or device.

[0043] Second, in the present application, the words "exemplarily", "for example" and the like are used to represent as an example, illustration or explanation. Any embodiment or design scheme described as "exemplarily" or "for example" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the words "exemplarily" or "for example" and the like are intended to present the relevant concept in a specific manner.

[0044] Third, in the present application, "when", "in the case of", "if" and "if" all refer to the objective situation in which the device will make corresponding processing, not limited to time, and does not require the device to have a judgment action when it is implemented, nor does it mean that there are other limitations.

[0045] Fourth, in the present application, the preset can be understood as predefinition, definition, predefinition, storage, prestorage, prenegotiation, preparation, preset or preconfiguration, etc.

[0046] Fifth, in the present application, "at least one" refers to one or more. "And / or" describes the association between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after it, but does not rule out the case where the associated objects before and after it represent an "and" relationship. The meaning expressed can be understood in conjunction with the context.

[0047] Sixth, in the present application, "obtaining" can represent the direction of signal transmission. For example, "the controller obtains the humidity (or humidity value) from the humidity sensor" can be understood as the destination of the humidity is the controller, which can include direct acquisition, for example, the controller can directly receive or read from the humidity sensor through the air interface or connection line or bus, or the humidity sensor can directly send to the controller through the air interface or connection line or bus; it can also include indirect acquisition, for example, the controller can indirectly receive or read from the humidity sensor through the air interface or connection line or bus from other units or modules, or the humidity sensor can indirectly send to the controller through other units or modules through the air interface or connection line or bus. "Send" can also be understood as the "output" of the chip interface, and "receive" can also be understood as the "input" of the chip interface.

[0048] In other words, sending and receiving can be between devices, for example, between the controller and the humidity sensor; it can also be within the device, for example, between components, modules, chips, software modules or hardware modules within the device through the bus, wiring or interface.

[0049] Seventh, in the present application, the term "connection" should be understood broadly. For example, it can be fixed connection, or detachable connection; it can be mechanical connection, or communication connection. For those skilled in the art, the specific meaning of the above-mentioned term in the present application can be understood according to the specific situation.

[0050] Eighth, in the present application, the terms "inner", "outer" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present application, and are not used to limit the indicated system, component or constituent part must have a specific orientation, or be constructed and operated in a specific orientation.

[0051] Ninth, in the present application, "first" and "second" and the like are used to distinguish the same items or similar items with basically the same function and effect. For example, the first electromagnetic valve and the second electromagnetic valve are used to distinguish different electromagnetic valves, and do not limit the sequence. Those skilled in the art can understand that "first" and "second" and the like do not limit the number and execution order, and "first" and "second" and the like do not necessarily mean different.

[0052] First, the terms involved in the present application are briefly described.

[0053] 1. Air suspension: an advanced automobile suspension that uses air springs (also known as air bags) instead of traditional steel springs to provide suspension and damping functions for vehicles.

[0054] 2. Engine: An engine is a broad term referring to any device capable of converting energy into mechanical energy. It can include many types of energy conversion devices. There are many types of engines, such as internal combustion engines, electric motors, steam engines, and jet engines.

[0055] An internal combustion engine is a specific type of engine that generates mechanical energy by burning fuels such as gasoline, diesel, and natural gas. The combustion process occurs in the combustion chamber inside the engine, where fuel mixes with air and ignites, producing high-temperature, high-pressure gases. These gases drive a piston or turbine, thus generating mechanical energy. Internal combustion engines are the primary power source for traditional automobiles, motorcycles, ships, and many other mechanical devices.

[0056] It's understandable that an internal combustion engine is a specific type of engine. All internal combustion engines are engines, but not all engines are internal combustion engines.

[0057] Electric motors (which can be simply called motors), steam engines, and other similar devices are also engines, but they achieve mechanical energy output through energy conversion methods different from those of internal combustion engines.

[0058] 3. Solenoid Valve: A solenoid valve is a device that uses electromagnetic force to control the flow of fluids (such as gases or liquids). It typically consists of an electromagnetic coil and a movable iron core (valve spool). When the electromagnetic coil is energized, the generated magnetic field attracts or pushes the iron core, thereby opening or closing the valve and controlling the fluid. Based on its working principle and structure, solenoid valves can be classified into several types, including direct-acting solenoid valves, pilot-operated solenoid valves, and step-direct-acting solenoid valves. Selecting a suitable solenoid valve requires consideration of various factors, including the working medium, pressure range, temperature range, response time, and installation environment.

[0059] In this application, the type of solenoid valve is not limited.

[0060] 4. Air spring: This is a device that uses the elasticity of compressed air to provide support and shock absorption. It typically consists of an air bladder made of a rubber and fabric composite material, filled with compressed air.

[0061] 5. Compressor Assembly: This refers to a complete system that integrates a compressor and its related components, typically used in refrigeration, air conditioning, and gas compression applications. A compressor assembly includes not only the compressor itself but may also include a motor, condenser, evaporator, control system, piping, and other auxiliary equipment. Its purpose is to compress gases (such as air, refrigerant, etc.) to higher pressures to meet specific application requirements.

[0062] Compressor assemblies may include, but are not limited to, the following types:

[0063] Reciprocating compressor: It uses the reciprocating motion of a piston in a cylinder to compress gas and is suitable for high-pressure, low-flow applications.

[0064] Screw compressors: These compressors compress gas through the meshing of a pair of helical rotors. They are suitable for medium- and high-pressure, high-flow applications and are widely used in industrial fields.

[0065] Centrifugal compressors: These compressors use a high-speed rotating impeller to accelerate and compress gas. They are suitable for applications with high flow rates and low to medium pressures, and are commonly used in large air conditioning systems and industrial processes.

[0066] Scroll compressor: It compresses gas through the relative motion of scroll plates. It is characterized by high efficiency and low noise and is often used in small air conditioners and refrigeration equipment.

[0067] The selection and design of compressor assemblies requires consideration of various factors, including the working medium, required pressure and flow rate, efficiency, noise level, installation space, and environmental conditions. Proper selection and maintenance of compressor assemblies can improve system performance and reliability, and extend equipment lifespan.

[0068] In this application, the type of compressor assembly is not limited.

[0069] 6. Air Tank: In the automotive field, an air tank (also known as a gas cylinder or gas container) is a container used to store compressed air, typically found in pneumatic systems in commercial vehicles. Air tanks play a crucial role in these systems, especially in heavy-duty trucks, buses, and other vehicles that require pneumatic braking systems.

[0070] The functions and uses of gas storage tanks may include, but are not limited to, the following:

[0071] 1) Storing compressed air: The main function of the air tank is to store compressed air generated by the compressor so as to provide a stable air source when needed.

[0072] 2) Stabilize air pressure: By storing compressed air, the air tank can balance pressure fluctuations in the pneumatic system and ensure the smooth operation of the system.

[0073] 3) Provides pneumatic power: The air tank provides a power source for the vehicle's pneumatic systems, including pneumatic brakes, suspension systems, and transmission shifting systems.

[0074] 4) Safety guarantee: In an emergency, the air tank can provide enough compressed air to ensure the normal operation of the braking system, even if the compressor fails.

[0075] With the development of the vehicle field, people's demand for comfortable travel is getting higher and higher. In order to meet people's high demand for comfortable travel, air suspension systems are gradually widely used in vehicles. The advantage of the air suspension system is that the air volume of the air spring can be changed through the air supply system according to different driving conditions and requirements, so as to lift or lower the height of the vehicle body and the suspension stiffness, so as to meet the comfort demand of the driver and passenger.

[0076] However, the gas supplied to the inside of the air suspension has a great influence on the service life of the air suspension, especially in the case of high water content in the air, the corrosion of the air spring bag skin and other metal parts is more serious, which can accelerate the rusting and aging of the air suspension system, thereby affecting the service life of the air suspension. Therefore, it is particularly important to ensure the dryness of the gas supplied to the inside of the air suspension.

[0077] In the currently known air suspension system, the water in the gas is adsorbed by a drying device before the air enters the air suspension system, so as to ensure the dryness of the gas. However, the adsorption effect of the drying agent has an upper limit, and when the drying agent reaches water saturation or approaches saturation, the drying effect will be greatly reduced or even lost.

[0078] In one possible implementation, the drying agent can be replaced to ensure the dryness of the gas supplied to the inside of the air suspension. However, this increases the cost of vehicle maintenance, and in addition, it is not known when to replace the drying agent (i.e. it is not known when it is appropriate to replace the drying agent), which reduces the user's experience.

[0079] To solve the above problems, the air suspension system provided by the embodiments of the present application includes a drying agent heating module, which heats the drying agent by using the gas discharged by the engine (the temperature of the gas is higher than that of the gas in the environment where the air suspension is located) to evaporate the water in the drying agent, which helps to dry the drying agent, so that the recycling of the drying agent can be realized.

[0080] The air suspension system provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0081] This application provides an air suspension system, comprising: an air suspension 200 for adjusting vehicle height; and a desiccant heating module 100 for heating and drying a desiccant used to dry the air in the environment where the air suspension 200 is located. The desiccant heating module 100 includes: an exhaust pipe 101, a first solenoid valve 102, an exhaust branch pipe 103, and a desiccant cylinder 104. One end of the exhaust pipe 101 is connected to the vehicle engine, and the exhaust pipe 101 is used to receive air from the engine. The exhaust pipe 101 is connected to one end of the first solenoid valve 102, and the other end of the first solenoid valve 102 is connected to the exhaust branch pipe 103. When the first solenoid valve 102 is open, it is used to introduce the gas in the exhaust pipe 101 into the exhaust branch pipe 103. The exhaust branch pipe 103 is adjacent to the desiccant cylinder 104. The desiccant cylinder 104 is used to hold the desiccant. The exhaust branch pipe 103 is used to heat the desiccant in the desiccant cylinder 104 using the gas in the exhaust branch pipe 103.

[0082] Figure 1 This is an exemplary block diagram of the air suspension system provided in the embodiments of this application.

[0083] For example, such as Figure 1 As shown, the air suspension system provided in this application embodiment may include an air suspension 200 and a desiccant heating module 100.

[0084] The air suspension 200 can be used to adjust the vehicle height; the desiccant heating module 100 can be used to heat and dry the desiccant, which can be used to dry the air in the environment where the air suspension 200 is located, that is, the desiccant can be used to absorb the moisture in the air in the environment where the air suspension 200 is located.

[0085] For example, such as Figure 1 As shown, the desiccant heating module 100 includes: an exhaust pipe 101, a first solenoid valve 102, an exhaust branch pipe 103, and a desiccant cylinder 104.

[0086] One end of the exhaust pipe 101 is connected to the vehicle engine and is used to receive gas generated by the engine. The other end of the exhaust pipe 101 is connected to one end of the first solenoid valve 102 and the other end of the first solenoid valve 102 is connected to the exhaust branch pipe 103. When the first solenoid valve 102 is open, it is used to introduce the gas in the exhaust pipe 101 into the exhaust branch pipe 103. The exhaust branch pipe 103 is adjacent to the desiccant cylinder 104 and is used to hold desiccant. The exhaust branch pipe 103 is used to heat the desiccant in the desiccant cylinder 104 using the gas in the exhaust branch pipe 103.

[0087] Understandably, taking the internal combustion engine as an example of an engine, the gases produced by an internal combustion engine are hot, primarily due to the energy released when fuel burns inside the engine. This includes, but is not limited to, the following reasons:

[0088] 1. Internal combustion engines typically use gasoline, diesel, natural gas, or other fuels, which mix with air and ignite in the engine's combustion chamber. Combustion is an exothermic reaction, converting chemical energy into heat energy, which significantly raises the temperature of the combustion products (mainly gases).

[0089] 2. In an internal combustion engine, the piston compresses the air-fuel mixture, and this compression causes the temperature to rise. The higher temperature generated after compression facilitates the auto-ignition of the fuel and more efficient combustion, further increasing the temperature of the gases.

[0090] 3. Internal combustion engines convert the chemical energy of fuel into mechanical energy, but this process is not 100% efficient. Some energy is dissipated as heat.

[0091] 4. The high-temperature, high-pressure gases produced after combustion push the piston to do work, and these gases are then expelled through the exhaust system. During the exhaust process, the gases remain at a high temperature until they are dissipated into the surrounding environment through the exhaust pipe. These factors combined result in the engine exhaust gases being hot. This hot gas is not only a byproduct of the energy conversion process but also an important consideration in engine design and efficiency optimization.

[0092] Taking an electric motor as another example of an engine, the working principle of an electric motor differs from that of an internal combustion engine. An electric motor does not directly produce gases during operation. Driven by electrical energy, it does not involve fuel combustion and therefore does not emit exhaust gases like an internal combustion engine. However, electric motors still generate heat during operation, primarily for reasons including, but not limited to, the following:

[0093] 1. Resistance loss: The wires and other electrical components inside the motor have resistance. When current flows through them, resistance loss (also known as Joule heating) is generated, which causes the motor to heat up, thus causing the air around the motor to heat up.

[0094] 2. Iron loss: When the iron core of the motor works in an alternating magnetic field, it will generate hysteresis loss and eddy current loss. These losses will also be converted into heat, which will cause the motor to heat up, and thus the air around the motor will become hot.

[0095] 3. Mechanical losses: The bearings and other mechanical parts of the motor will generate friction during operation. This friction will cause heat to be generated, which will cause the motor to heat up, and thus the air around the motor will become hot.

[0096] 4. Efficiency loss: Motors are not 100% efficient. Some electrical energy is converted into heat energy during the conversion process, which causes the motor to heat up, and thus the air around the motor becomes hot.

[0097] Therefore, the desiccant can be heated using the hot air generated by the engine or the hot air around the engine. When the desiccant is heated, the moisture will be atomized from the desiccant, thereby realizing the recycling and regeneration of the desiccant.

[0098] It is also understandable that solenoid valves can control the flow of gas.

[0099] For example, when the first solenoid valve 102 is open, the gas in the exhaust pipe 101 can flow to the exhaust branch pipe 103; when the first solenoid valve 102 is closed, the gas in the exhaust pipe 101 will not flow to the exhaust branch pipe 103.

[0100] In one possible implementation, the first solenoid valve 102 opens when the air suspension 200 is in exhaust mode.

[0101] When the air suspension is in exhaust mode, the gas passes through the desiccant pipe, thus carrying away some of the moisture in the desiccant. When the air suspension is in exhaust mode, the first solenoid valve 102 opens, and the hot gas generated by the engine or the hot gas around the engine flows sequentially through the exhaust pipe 101, the first solenoid valve 102, and the exhaust manifold 103 to heat the desiccant.

[0102] like Figure 1 As shown, in one possible implementation, the exhaust manifold 103 is adjacent to the desiccant cylinder 104, and the hot gas in the exhaust manifold 103 can be used to heat the desiccant in the desiccant cylinder 104 by thermal radiation from the surface of the exhaust manifold 103.

[0103] In another possible implementation, the first solenoid valve 102 is closed when the air suspension 200 is not in exhaust mode.

[0104] To ensure that the drying of the gas inside the desiccant air suspension is not affected, the first solenoid valve 102 can be closed when the air suspension 200 is not in exhaust mode, thereby preventing the desiccant from absorbing moisture from the air while simultaneously releasing moisture into the air.

[0105] In one possible implementation, combined with the structure of the air suspension, the air suspension can achieve active exhaust mode and / or passive exhaust mode; that is, the exhaust mode of the air suspension can include active exhaust mode and / or passive exhaust mode. The following combines... Figure 2 This will be explained in detail.

[0106] In a possible implementation, the air suspension 200 can include a second electromagnetic valve 201, a throttle back check valve 202, a controller 203, a gas tank 204, a third electromagnetic valve 205, and a compressor assembly 208; and the exhaust mode includes an active exhaust mode, in which the third electromagnetic valve 205 and the second electromagnetic valve 201 are opened to cause the gas in the gas tank 204 to be exhausted to the environment in which the air suspension 200 is located via the third electromagnetic valve 205, the compressor assembly 208, the throttle back check valve 202, the desiccant cartridge 104, and the second electromagnetic valve 201, to remove the moisture in the desiccant; wherein the opening and closing of the third electromagnetic valve 205 and the second electromagnetic valve 201 are controlled by the controller 203.

[0107] Figure 2 is another exemplary block diagram of the air suspension system provided in the embodiments of the present application.

[0108] Exemplarily, as shown in Figure 2 , when the third electromagnetic valve 205 and the second electromagnetic valve 201 are opened, a path is formed between the gas tank 204, the third electromagnetic valve 205, the compressor assembly 208, the throttle back check valve 202, the desiccant cartridge 104, and the second electromagnetic valve 201, and the gas in the gas tank 204 can be exhausted to the environment in which the air suspension 200 is located based on the formed path, in the process of which, the gas in the gas tank 204 can remove part of the moisture in the desiccant in the desiccant cartridge 104 when flowing through the desiccant cartridge 104, thereby producing the effect of drying the desiccant.

[0109] The controller 203 can also be referred to as an electronic control unit (ECU), which is not limited in the present application. The controller 203 can be used to control the operation of the compressor assembly 208 and the electromagnetic valve, to achieve accurate control of the air suspension.

[0110] The compressor assembly 208 can also be referred to as an air compressor, which can provide air with high pressure. The compressor assembly 208 can be used to charge and adjust the air pressure of the air spring.

[0111] In a possible implementation, the controller 203 can start the active exhaust mode in response to the operation of the user. In some possible designs, the controller 203 can also actively start the active exhaust mode when it is detected that the preset triggering condition is met. The embodiments of the present application are not limited in this regard.

[0112] In a possible implementation, the controller 203 can close the active exhaust mode in response to an operation of the user. In some possible designs, the controller 203 can also actively close the active exhaust mode upon detecting that a preset triggering condition is met. For example, the controller 203 can actively close the active exhaust mode upon detecting that the pressure of the gas in the gas storage tank 204 is less than or equal to a preset pressure threshold. The embodiments of the present application do not limit this.

[0113] Optionally, in a possible implementation A, the controller 203 can automatically control the compressor assembly 208 to open and supplement the gas into the gas storage tank 204 after the active exhaust mode is closed.

[0114] That is to say, in this implementation A, the controller 203 can automatically control the compressor assembly 208 to open and supplement the gas into the gas storage tank 204 after the active exhaust mode is closed each time.

[0115] In a possible implementation B, the controller 203 can control the compressor assembly 208 to open and supplement the gas into the gas storage tank 204 in response to an operation of the user.

[0116] That is to say, in this implementation B, the controller 203 can supplement the gas into the gas storage tank 204 in response to an operation of the user when the user wants to supplement the gas into the gas storage tank 204.

[0117] In a possible implementation C, the controller 203 can control the compressor assembly 208 to open and supplement the gas into the gas storage tank 204 when the pressure of the gas in the gas storage tank 204 is less than or equal to a preset pressure threshold.

[0118] That is to say, in this implementation C, the triggering condition for supplementing the gas into the gas storage tank 204 can include that the pressure of the gas in the gas storage tank 204 is less than or equal to a preset pressure threshold.

[0119] In a possible implementation D, the controller 203 can control the compressor assembly 208 to open and supplement the gas into the gas storage tank 204 after the active exhaust mode is closed each time, and when the pressure of the gas in the gas storage tank 204 is less than or equal to a preset pressure threshold.

[0120] That is to say, in this implementation D, the triggering condition for supplementing the gas into the gas storage tank 204 can include that the pressure of the gas in the gas storage tank 204 is less than or equal to a preset pressure threshold after the active exhaust mode is closed each time.

[0121] In another possible implementation, the air suspension 200 can include a second electromagnetic valve 201, a throttle check valve 202, a controller 203, an air spring 206, a fourth electromagnetic valve 207, and a compressor assembly 208; and, the exhaust mode includes a passive exhaust mode, in which case the fourth electromagnetic valve 207 and the second electromagnetic valve 201 are opened to cause the gas in the air spring 206 to be exhausted to the environment in which the air suspension 200 is located via the fourth electromagnetic valve 207, the compressor assembly 208, the throttle check valve 202, the desiccant cartridge 104, the second electromagnetic valve 201, to remove moisture in the desiccant; wherein the opening or closing of the fourth electromagnetic valve 207 and the second electromagnetic valve 201 is controlled by the controller 203.

[0122] Figure 3 is another exemplary block diagram of the air suspension system provided by an embodiment of the present application.

[0123] Exemplarily, as shown in Figure 3 , in the case where the fourth electromagnetic valve 207 and the second electromagnetic valve 201 are opened, a path is formed between the air spring 206, the fourth electromagnetic valve 207, the compressor assembly 208, the throttle check valve 202, the desiccant cartridge 104, and the second electromagnetic valve 201, and the gas in the air spring 206 can be exhausted to the environment in which the air suspension 200 is located based on the formed path, in the process, when the gas in the air spring 206 flows through the desiccant cartridge 104, it can remove part of the moisture in the desiccant in the desiccant cartridge 104, thereby producing the effect of drying the desiccant.

[0124] , the air spring 206 can adjust the suspension height and stiffness of the vehicle by changing the internal air pressure of the air spring 206.

[0125] In some possible implementation scenarios, the air spring 206 can be made of materials such as rubber and fabric, and can withstand high air pressure.

[0126] It can be understood that in the case of a demand for a decrease in the height of the vehicle body, the controller 203 can control the air suspension 200 to enter the passive exhaust mode, that is, in the case of a demand for a decrease in the height of the vehicle body, the controller 203 can control the fourth electromagnetic valve 207 and the second electromagnetic valve 201 to be opened, so that a passage is formed between the air spring 206, the fourth electromagnetic valve 207, the compressor assembly 208, the throttle check valve 202, the desiccant cartridge 104 and the second electromagnetic valve 201, and the gas in the air spring 206 can be exhausted to the environment in which the air suspension 200 is located based on the formed passage, and in the process, when the gas in the air spring 206 flows through the desiccant cartridge 104, a part of the moisture in the desiccant in the desiccant cartridge 104 can be taken away, so that the effect of drying the desiccant is generated, and the cyclic regeneration of the desiccant is achieved.

[0127] In another possible implementation, the air suspension 200 can include a second electromagnetic valve 201, a throttle check valve 202, a controller 203, a gas tank 204, a third electromagnetic valve 205, an air spring 206, a fourth electromagnetic valve 207 and a compressor assembly 208; and the exhaust mode includes an active exhaust mode and a passive exhaust mode; wherein in the case of the active exhaust mode, the third electromagnetic valve 205 and the second electromagnetic valve 201 are opened, so that the gas in the gas tank 204 is exhausted to the environment in which the air suspension 200 is located via the third electromagnetic valve 205, the compressor assembly 208, the throttle check valve 202, the desiccant cartridge 104 and the second electromagnetic valve 201, to take away the moisture in the desiccant; in the case of the passive exhaust mode, the fourth electromagnetic valve 207 and the second electromagnetic valve 201 are opened, so that the gas in the air spring 206 is exhausted to the environment in which the air suspension 200 is located via the fourth electromagnetic valve 207, the compressor assembly 208, the throttle check valve 202, the desiccant cartridge 104 and the second electromagnetic valve 201, to take away the moisture in the desiccant; wherein the opening and closing of the fourth electromagnetic valve 207, the third electromagnetic valve 205 and the second electromagnetic valve 201 are controlled by the controller 203.

[0128] Figure 4 is another exemplary block diagram of the air suspension system provided by the embodiments of the present application.

[0129] Exemplarily, as Figure 4As shown, the controller 203 can actively open the active exhaust mode in response to a user operation; or, the controller 203 can actively open the active exhaust mode upon detecting that a preset triggering condition is met. That is, the controller 203 can control the third solenoid valve 205 and the second solenoid valve 201 to open in response to a user operation, or upon detecting that a preset triggering condition is met, so as to form a path between the gas tank 204, the third solenoid valve 205, the compressor assembly 208, the throttle check valve 202, the desiccant cartridge 104, and the second solenoid valve 201, so that the gas in the gas tank 204 can be exhausted to the environment where the air suspension 200 is located based on the formed path, and in the process, the gas in the gas tank 204 can take away part of the moisture in the desiccant in the desiccant cartridge 104 when flowing through the desiccant cartridge 104, so as to generate a drying effect on the desiccant.

[0130] When there is a demand for lowering the height of the vehicle body, the controller 203 can open the passive exhaust mode. That is, when there is a demand for lowering the height of the vehicle body, the controller 203 can control the fourth solenoid valve 207 and the second solenoid valve 201 to open, so as to form a path between the air spring 206, the fourth solenoid valve 207, the compressor assembly 208, the throttle check valve 202, the desiccant cartridge 104, and the second solenoid valve 201, so that the gas in the air spring 206 can be exhausted to the environment where the air suspension 200 is located based on the formed path, and in the process, the gas in the air spring 206 can take away part of the moisture in the desiccant in the desiccant cartridge 104 when flowing through the desiccant cartridge 104, so as to generate a drying effect on the desiccant, and achieve the cyclic regeneration of the desiccant.

[0131] In a possible implementation, the desiccant heating module 100 further includes a humidity sensor 105 located in the desiccant cartridge 104, and the humidity sensor 105 is configured to measure the humidity of the desiccant.

[0132] As shown, the humidity sensor 105 can be arranged in the desiccant cartridge 104, and the humidity sensor 105 can be configured to measure the humidity of the desiccant contained in the desiccant cartridge 104. Figure 5 As shown, the humidity sensor 105 can be arranged in the desiccant cartridge 104, and the humidity sensor 105 can be configured to measure the humidity of the desiccant contained in the desiccant cartridge 104.

[0133] In a possible implementation, the air suspension 200 can include a controller 203 configured to acquire the humidity of the desiccant measured by the humidity sensor 105.

[0134] As shown, the humidity sensor 105 can be arranged in the desiccant cartridge 104, and the humidity sensor 105 can be configured to measure the humidity of the desiccant contained in the desiccant cartridge 104. Figure 5As shown, the desiccant cartridge 104 can be provided with a humidity sensor 105, which can be used to measure the humidity of the desiccant contained in the desiccant cartridge 104. The humidity sensor 105 can transmit the humidity measured by the humidity sensor 105 to the controller 203 through an electrical signal, i.e., the controller 203 can obtain the humidity of the desiccant contained in the desiccant cartridge 104 from the humidity sensor 105.

[0135] In one possible implementation, the controller 203 is further configured to remind the user to start the active exhaust mode when the humidity of the desiccant is greater than or equal to the humidity threshold.

[0136] It can be understood that the humidity threshold can be an empirical value and can be pre-set in the present application.

[0137] Exemplarily, as shown in FIG. 6, the controller 203 is further configured to remind the user to start the active exhaust mode when the humidity of the desiccant is greater than or equal to the humidity threshold. That is, after the controller 203 obtains the humidity of the desiccant contained in the desiccant cartridge 104, the controller 203 can determine whether the obtained humidity of the desiccant is greater than or equal to the humidity threshold. When the humidity of the desiccant is greater than or equal to the humidity threshold, the controller 203 can remind the user to start the active exhaust mode to dry the desiccant in the desiccant cartridge 104. Figure 5

[0138] In another possible implementation, the controller 203 is further configured to start the active exhaust mode and remind the user that the active exhaust mode has been started when the humidity of the desiccant is greater than or equal to the humidity threshold.

[0139] Exemplarily, as shown in FIG. 6, the controller 203 is further configured to remind the user to start the active exhaust mode when the humidity of the desiccant is greater than or equal to the humidity threshold. That is, after the controller 203 obtains the humidity of the desiccant contained in the desiccant cartridge 104, the controller 203 can determine whether the obtained humidity of the desiccant is greater than or equal to the humidity threshold. When the humidity of the desiccant is greater than or equal to the humidity threshold, the controller 203 can remind the user to start the active exhaust mode to dry the desiccant in the desiccant cartridge 104. Figure 5 ​As shown, in the case that the humidity of the desiccant is greater than or equal to the humidity threshold value, the controller 203 is further configured to start the active exhaust mode and remind the user that the active exhaust mode has been started. That is, after the controller 203 obtains the humidity of the desiccant contained in the desiccant cartridge 104, the controller 203 can determine whether the obtained humidity of the desiccant is greater than or equal to the humidity threshold value, and in the case that the humidity of the desiccant is greater than or equal to the humidity threshold value, the controller 203 can actively open the exhaust mode and remind the user that the active exhaust mode has been started. That is, in the case that the humidity of the desiccant is greater than or equal to the humidity threshold value, the controller 203 can control the third electromagnetic valve 205 and the second electromagnetic valve 201 to be opened, so as to form a path between the gas tank 204, the third electromagnetic valve 205, the compressor assembly 208, the throttle check valve 202, the desiccant cartridge 104 and the second electromagnetic valve 201, so that the gas in the gas tank 204 can be exhausted to the environment in which the air suspension 200 is located based on the formed path. In this process, the gas in the gas tank 204 can take away part of the moisture in the desiccant in the desiccant cartridge 104 when flowing through the desiccant cartridge 104, so as to generate a drying effect of the desiccant; and the controller 203 can also remind the user that the active exhaust mode has been started.

[0140] Optionally, the controller 203 can remind the user that the active exhaust mode has been started in the following ways, which can include but are not limited to any one or a combination of at least two of the following: displaying a prompt text on a display screen in the vehicle; or, prompting by voice; or, displaying a prompt text on the front windshield by a head-up display. The present application does not limit this.

[0141] It can be understood that in the case that the active exhaust mode is started, there can be some noise. In order to avoid the driver or passenger from being panicked or feeling puzzled due to not knowing the reason for the noise, the user is reminded that the active exhaust mode has been started in the case that the active exhaust mode is started, which can improve the user experience.

[0142] It can be understood that it has been stated above that the first electromagnetic valve 102 can be opened in the case that the air suspension 200 is in the exhaust mode.

[0143] As an example, the controller 203 can control the first electromagnetic valve 102 to be opened in the case that the active exhaust mode is started, so that the hot gas generated by the engine or the hot gas around the engine flows through the exhaust pipe 101, the first electromagnetic valve 102 and the exhaust branch pipe 103 in sequence to heat the desiccant. That is, the controller 203 can open the first electromagnetic valve 102 in the case that the second electromagnetic valve 201 and the third electromagnetic valve 205 are opened.

[0144] In this way, the gas in the air spring 206 can be used to carry away the moisture in the desiccant in the desiccant cartridge 104 while the hot gas from the engine is used to heat the desiccant in the desiccant cartridge 104 to evaporate the moisture in the desiccant, so that the speed of the circulation and regeneration of the desiccant can be improved. That is, when the desiccant is heated, the moisture in the desiccant will be atomized, and at this time, the atomized moisture can be discharged into the ambient air by the gas in cooperation with the exhaust, so that the efficiency of the regeneration of the desiccant can be improved.

[0145] In another example, the controller 203 controls the first electromagnetic valve 102 to be opened when the passive exhaust mode is started, so that the hot gas generated by the engine or the hot gas around the engine flows through the exhaust pipe 101, the first electromagnetic valve 102, and the exhaust branch pipe 103 in turn to heat the desiccant. That is, the controller 203 can open the first electromagnetic valve 102 when the second electromagnetic valve 201 and the fourth electromagnetic valve 207 are opened.

[0146] In this way, the gas in the air spring 206 can be used to carry away the moisture in the desiccant in the desiccant cartridge 104 while the hot gas from the engine is used to heat the desiccant in the desiccant cartridge 104 to evaporate the moisture in the desiccant, so that the speed of the circulation and regeneration of the desiccant can be improved. That is, when the desiccant is heated, the moisture in the desiccant will be atomized, and at this time, the atomized moisture can be discharged into the ambient air by the gas in cooperation with the exhaust, so that the efficiency of the regeneration of the desiccant can be improved.

[0147] It can also be understood that the first electromagnetic valve 102 can be closed when the air suspension 200 is not in the exhaust mode, as mentioned above.

[0148] Exemplarily, the first electromagnetic valve 102 can be closed when the air suspension 200 is neither in the active exhaust mode nor in the passive exhaust mode. That is, after the controller 203 opens the first electromagnetic valve 102, the controller 203 can also detect the states of the second electromagnetic valve 201, the third electromagnetic valve 205, and the fourth electromagnetic valve 207. When the second electromagnetic valve 201, the third electromagnetic valve 205, and the fourth electromagnetic valve 207 are all in the closed state, the controller 203 can control the first electromagnetic valve 102 to be closed to stop the hot gas from the engine from being used to heat the desiccant in the desiccant cartridge 104.

[0149] In some possible implementations, the air suspension 200 can further include a height sensor (not shown in the figure) which can be used to measure the suspension height of the vehicle and can feed back data to the controller. The height sensor is usually installed on each suspension point of the vehicle. Figures 1 to 5

[0150] ​In some possible implementations, the air suspension 200 may also include shock absorbers ( Figures 1 to 5 (Not shown in the image), the shock absorber can be used in conjunction with the air spring 206 to provide shock absorption for the vehicle. The shock absorber can be a conventional hydraulic shock absorber or an adjustable shock absorber with electronic control functions; this application does not limit the choice.

[0151] Based on the above technical solution, firstly, the desiccant is heated using hot air generated by the engine or the hot air surrounding the engine. As the desiccant heats up, moisture is atomized, thus achieving desiccant regeneration. Secondly, the atomization of moisture in the desiccant during heating, combined with exhaust gas, allows the atomized moisture to be released into the ambient air, significantly improving the efficiency of desiccant regeneration. Furthermore, by monitoring the desiccant's humidity, drying can be initiated when appropriate. Drying the desiccant only when needed conserves air in the air suspension system, helping to extend its service life.

[0152] The terms “unit”, “module”, etc., used in this specification may be used to refer to a combination of entities, hardware, and firmware related to a device or apparatus.

[0153] Those skilled in the art will recognize that the various illustrative logical blocks and steps described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application. In the several embodiments provided in this application, it should be understood that the disclosed apparatus, devices, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for example, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the shown or discussed mutual couplings or direct couplings or communication connections may be through some interfaces; indirect couplings or communication connections between devices or modules may be electrical, mechanical, or other forms.

[0154] The modules described as separate components may or may not be physically separate, and the components shown as modules may or may not be physical modules, i.e., may be located in one place, or may be distributed to multiple network modules. Some or all of the modules can be selected according to actual needs to achieve the purpose of the embodiment.

[0155] In addition, the functional modules in each embodiment of the present application can be integrated into one processing module, or each module can be physically present alone, or two or more units can be integrated into one module.

[0156] In the above embodiments, the functions of each functional module can be implemented by software, hardware, firmware, or any combination thereof, in whole or in part. When implemented by software, it can be implemented in whole or in part in the form of a program product. The program product includes one or more instructions (programs). When the program instructions (programs) are loaded and executed on a device or apparatus, the flow or function described in the embodiments of the present application is generated in whole or in part. The instructions can be stored in a readable storage medium, or transferred from one readable storage medium to another readable storage medium, for example, the instructions can be transferred from one website site, computer, server or data center to another website site, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) manner. The readable storage medium can be any available medium that can be accessed by a device or apparatus, or a data storage device such as a server, data center, etc. containing one or more available media. The available medium can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a digital video disc (DVD)), or a semiconductor medium (such as a solid state disk (SSD)), etc.

[0157] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in 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 air suspension system characterized by, The application relates to an air suspension (200) for adjusting the height of a vehicle body, a desiccant heating module (100) for heating a desiccant used for drying air in the environment of the air suspension (200), and a method for drying air in the environment of the air suspension (200). The desiccant heating module (100) comprises an exhaust pipe (101), a first electromagnetic valve (102), an exhaust branch pipe (103) and a desiccant cylinder (104). One end of the exhaust pipe (101) is connected to a vehicle engine, and the exhaust pipe (101) is used for receiving gas generated from the engine; the other end of the exhaust pipe (101) is connected to one end of the first electromagnetic valve (102), and the other end of the first electromagnetic valve (102) is connected to the exhaust branch pipe (103); the first electromagnetic valve (102) is used for introducing the gas in the exhaust pipe (101) into the exhaust branch pipe (103) when the first electromagnetic valve (102) is opened; the exhaust branch pipe (103) is adjacent to the desiccant cylinder (104); the desiccant cylinder (104) is used for containing the desiccant; and the exhaust branch pipe (103) is used for heating the desiccant in the desiccant cylinder (104) by using the gas in the exhaust branch pipe (103). The first electromagnetic valve (102) is opened when the air suspension (200) is in an exhaust mode. The first electromagnetic valve (102) is closed when the air suspension (200) is not in the exhaust mode.

2. The air suspension system of claim 1, wherein, The air suspension (200) comprises a second electromagnetic valve (201), a throttle check valve (202), a controller (203), an air tank (204), a third electromagnetic valve (205) and a compressor assembly (208); and 3. The air suspension system of claim 1 or 2, wherein, The exhaust mode comprises an active exhaust mode; when in the active exhaust mode, the third electromagnetic valve (205) and the second electromagnetic valve (201) are opened, so that the gas in the air tank (204) is discharged into the environment of the air suspension (200) via the third electromagnetic valve (205), the compressor assembly (208), the throttle check valve (202), the desiccant cylinder (104) and the second electromagnetic valve (201), so as to remove the moisture in the desiccant; wherein the opening and closing of the third electromagnetic valve (205) and the second electromagnetic valve (201) are controlled by the controller (203).

4. The air suspension system of claim 2, wherein, The air suspension (200) comprises a second electromagnetic valve (201), a throttle check valve (202), a controller (203), an air spring (206), a fourth electromagnetic valve (207) and a compressor assembly (208); and ​ 5. The air suspension system of claim 2, wherein, ​ The exhaust mode includes a passive exhaust mode, in which the fourth solenoid valve (207) and the second solenoid valve (201) are opened to allow the gas in the air spring (206) to be exhausted to the environment in which the air suspension (200) is located via the fourth solenoid valve (207), the compressor assembly (208), the throttle check valve (202), the desiccant cartridge (104), and the second solenoid valve (201) to remove moisture in the desiccant; wherein the opening and closing of the fourth solenoid valve (207) and the second solenoid valve (201) are controlled by the controller (203).

6. The air suspension system of claim 1, wherein, The desiccant heating module (100) further comprises a humidity sensor (105) located in the desiccant cartridge (104), which is used to measure the humidity of the desiccant.

7. The air suspension system of claim 6, wherein, The air suspension (200) comprises a controller (203) for obtaining the humidity of the desiccant measured by the humidity sensor (105).

8. The air suspension system of claim 7, wherein, When the humidity of the desiccant is greater than or equal to a humidity threshold, the controller (203) is further configured to remind the user to start the active exhaust mode.

9. The air suspension system of claim 7, wherein, When the humidity of the desiccant is greater than or equal to a humidity threshold, the controller (203) is further configured to start the active exhaust mode and remind the user that the active exhaust mode has been started.

10. The air suspension system of any one of claims 4, 5, 7-9, wherein, The controller (203) is further configured to start the active exhaust mode in response to the user's operation.

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