Automobile gas source supply gas path system and control method thereof
By integrating seats, suspension, camera cleaning, and external air source into a semi-closed central air supply system, the problems of redundant pipelines, multiple leakage points, and high energy consumption in existing technologies are solved, achieving efficient and flexible gas utilization and supply control.
Patent Information
- Application Number
- CN202611322700.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-08-28
- Publication Date
- 2026-11-06
AI Technical Summary
In existing automotive air supply systems, each air-using system operates independently, resulting in numerous pipe joints, leak points, high costs, gas waste, and high energy consumption. Furthermore, traditional seat air supply structures are redundant, have low drying efficiency, and cannot be expanded with external air source interfaces.
Design a semi-closed central air supply system that integrates the seat system, suspension system, camera cleaning and multi-interface external air source into a single air circuit. It adopts a single pump for centralized air supply, eliminates the dedicated air tank and water vapor separator for the seat, adopts a semi-closed suspension structure, optimizes the gas drying logic, and realizes gas recovery and utilization and reduces energy consumption.
It achieves high system integration, low cost, few leakage points, high gas utilization, low noise, flexible gas supply mode, good drying effect, strong external gas source expandability, high pumping efficiency, fast response speed, and reduces vehicle weight and energy consumption.
Smart Images
Figure CN123040508A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of automotive parts technology, and more specifically, relates to an automotive air supply system. This invention also relates to a control method for the automotive air supply system. Background Technology
[0002] In current automobiles, seat massage, side wing support control, air suspension adjustment, camera cleaning, and external air source scenarios such as tires, air mattresses, and tents all use independent pump valve pipeline components to supply air, and each system is independent of the others; at the same time, air suspension systems mostly adopt open or purely closed structures, and seat systems are mostly equipped with independent air tanks and water vapor separators.
[0003] The existing technical solutions have the following core technical defects: 1. Each air-using system, such as the seat, suspension, and external air source, uses its own pump and valve assembly, resulting in numerous pipe joints and leakage points. Long-term use can easily lead to air leakage due to seal failure. Furthermore, the redundant configuration of parts increases cost and vehicle weight, hindering lightweighting and cost control. 2. Defects of open suspension systems: When the air springs descend, the air is directly discharged to the outside, wasting air resources and generating significant exhaust noise. Subsequent air spring descent requires re-inhalation from the atmosphere, resulting in slow pumping speed and high energy consumption. 3. Defects of purely closed suspension systems: When the air springs descend, a pump is required. 4. Redundancy in seat air supply structure: Traditional seat systems require dedicated air tanks and water vapor separators, increasing the number of parts and costs; at the same time, the gas drying effect depends on the water vapor separator, which has limited drying efficiency and no desiccant regeneration function, making it easy for residual moisture to cause mold and bacteria growth in the seat airbags, affecting service life and cabin health; 5. Poor scalability of air usage scenarios: Traditional external air source interfaces are single and cannot support multiple external air-using devices at the same time, limiting the user's vehicle usage scenarios.
[0004] Existing technology includes a patent titled "An Air Suspension Air Circuit System and Its Control Method," with publication number "120645608A." This technology relates to the field of air suspension, specifically to an air suspension air circuit system and its control method. The system comprises an air compression unit, an air spring unit, a low-pressure control unit, a high-pressure control unit, and an air storage unit consisting of a dual-chamber air tank. The dual-chamber air tank includes a low-pressure chamber and a high-pressure chamber, enabling partitioned storage of high and low-pressure gases. When the high-pressure chamber fails, the low-pressure chamber can serve as a backup chamber. The units are connected via specific ventilation pipelines and coordinated by control valves, enabling multiple air circuit controls and precise adjustment of the air suspension air circuit system pressure. This invention improves the reliability of the entire system through the redundant design of the dual-chamber air tank, further reduces energy consumption through closed-loop gas circulation, and achieves precise control through multi-valve combinations and pressure monitoring, forming a complete safety mechanism. It solves the problems of single air storage, inflexible pressure control, and low reliability in traditional systems, enhancing the stability, adaptability, and working efficiency of the air suspension system.
[0005] However, this technology does not address the technical issues and solutions of this application. Summary of the Invention
[0006] The technical problem to be solved by this invention is to provide a semi-closed central air supply system that addresses the shortcomings of existing technologies. This system integrates the air requirements of the seat system, suspension system, camera cleaning, and multiple external air sources into a single air circuit, achieving centralized air supply from a single pump. It eliminates the need for a dedicated air tank for seats and an independent water-vapor separator, simplifying the structure and reducing costs. The semi-closed suspension structure combines the advantages of both open and closed systems, enabling gas recovery and reducing energy consumption. Simultaneously, it optimizes gas drying and seat air supply logic, improving air source utilization and reliability in automotive air supply systems.
[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: This invention relates to an automotive air supply system. Gas pipeline I connects to an air tank I. Solenoid valves SVⅠ and SVⅡ are installed on gas pipeline I at both ends of the air tank I. One end of gas pipeline I connects to a branch pipe, which connects to multiple suspension gas pipelines. Each suspension gas pipeline is equipped with a control solenoid valve and multiple air springs. The other end of gas pipeline I is an air inlet. One end of gas pipeline II connects to the gas pipeline I between solenoid valve SVⅡ and the air inlet. The other end of gas pipeline II connects to the seat airbag. A compressor pump is installed on gas pipeline II. One end of gas pipeline III connects to the gas pipeline II between the compressor pump and the seat airbag. The other end of gas pipeline III connects to a branch pipe. One end of gas pipeline IV connects to the gas pipeline I between solenoid valves SVⅠ and SVⅡ. The other end of gas pipeline IV connects to the gas pipeline II between the compressor pump and the seat airbag. A solenoid valve SVⅢ is installed on gas pipeline IV.
[0008] The gas pipeline III is located at the gas pipeline II position between the connection point of the compression pump and gas pipeline V and gas pipeline II 8.
[0009] A dryer is installed on the gas pipeline III, and the gas pipeline III is connected to the exhaust pipeline, on which an exhaust valve EV is installed.
[0010] A filter is installed on gas pipeline I, and the filter is located between the connection point of gas pipeline II and gas pipeline I and the air inlet.
[0011] A one-way valve and a pressure reducing valve are installed on the gas pipeline II. The pressure reducing valve is located between the connection point of gas pipeline II 8 and gas pipeline IV and the seat airbag. The one-way valve 18 is located at the gas pipeline II 8 between the connection point of gas pipeline II and gas pipeline IV and the compression pump.
[0012] Gas pipeline II is connected to gas pipeline V, which is located between the check valve and gas pipeline III. Solenoid valve SVV is installed on gas pipeline V.
[0013] The gas pipeline III is connected to the pressure sensor P near the branch pipe.
[0014] A safety valve 23 is installed between the pressure reducing valve and the seat airbag on the gas pipeline II.
[0015] This invention also relates to a semi-closed central air supply system, which integrates the air requirements of the seat system, suspension system, camera cleaning, and multi-interface external air sources into a single air circuit, achieving centralized air supply by a single pump; it eliminates the need for a dedicated air tank for seats and an independent water vapor separator, simplifying the structure and reducing costs; it adopts a semi-closed suspension structure, combining the advantages of open and closed systems, achieving gas recovery and utilization, and reducing energy consumption; it also optimizes the gas drying and seat air supply logic, improving the air source utilization rate and air supply reliability. The control method for the air supply circuit of automotive air-using components includes a control method for the suspension system, the steps of which are as follows: Air springs rise: The compressor pump works, solenoid valve SVⅡ and multiple control solenoid valves open, and the compressed gas in air tank I is pressurized by the compressor pump and delivered to multiple air springs to raise the vehicle height. Air spring descent: Different control logics are used based on the pressure difference between the air spring and air tank I. When the pressure difference is greater than the set high value: the compressor pump does not work, the solenoid valve SVⅠ and multiple control solenoid valves open, and the gas in the air spring flows into the air storage tank Ⅰ, realizing energy-free recovery; When the pressure difference is less than the set high value: exhaust gas directly to the outside through the exhaust valve EV; When the seat airbags in the seating system are inflated, two air supply modes can be selected based on the inflation rate: When air-consuming equipment with a high air consumption rate is working (such as side wing support functions that require a rapid response): the compressor pump works, the solenoid valve SVⅡ opens, and the gas in the air tank I is pressurized by the compressor pump, and then supplied to the seat airbag after being stabilized by the check valve and the pressure reducing valve. When operating air-consuming devices with slow air consumption (such as massage functions): there is no need to start the compressor pump. The solenoid valve SVⅢ opens, and the gas in the air tank I is directly supplied to the seat airbag after being stabilized by the pressure reducing valve, reducing energy consumption; the safety valve is used for overpressure protection of the seat air supply branch to prevent damage to the seat airbag due to excessive pressure.
[0016] It also includes control methods for other systems, and the steps of the control methods are as follows: Camera cleaning control: When the compressor pump is working, the solenoid valve SV opens, and compressed gas is delivered to the camera cleaning device to achieve air blowing cleaning of the lens; External gas supply: When the compressor pump operates, the external gas supply solenoid valve 24, corresponding to the external gas usage scenario, opens, and compressed gas is supplied to external devices such as tires and / or air mattresses and / or tents and / or oxygen concentrators through the corresponding interface. When there are more external gas-using devices, the number of solenoid valves can be increased, thus supporting more external gas-using devices.
[0017] Gas drying and regeneration control: The gas output from the compressor pump is dried by the dryer to remove water vapor and ensure the gas supply to the gas-using module is dry; the dryer is equipped with a heating regeneration device, which restores the drying capacity by heating and regenerating when the desiccant is saturated with water, thus extending the service life of the desiccant.
[0018] The working principle and beneficial effects of the technical solution adopted in this invention are as follows: The automotive air supply system of this invention is structurally equipped with a compressor pump, a dryer (which may be configured with a heating and regeneration device), a safety valve, a suspension system, a seat system, a camera cleaning module, and an external air source module. The compressor pump is a central air source pump, which can centrally supply air to all air-consuming devices through a single pump. The suspension system is a semi-closed structure, including an air tank I, an exhaust valve EV, multiple air springs (e.g., air springs FL, FR, RL, and RR), suspension solenoid valves SVII and SVI, and multiple control solenoid valves corresponding to each air spring (e.g., control solenoid valves AVI, AVII, AVIII, and AVIV). A pressure sensor P is used to monitor the real-time pressure data of the entire system and feed the data back to the vehicle ECU for the ECU to make action control. The outlet of the compressor pump is connected to the main air circuit of the suspension after passing through the dryer. The air tank I is connected to the compressor pump through solenoid valve SVII. The air spring is connected to the high-pressure main air circuit via multiple control solenoid valves in parallel. Solenoid valve SVⅠ is located in the circuit between the air spring and the air tank Ⅰ. The seat system does not have an independent air tank or water vapor separator. The seat system includes a pressure reducing valve, a safety valve, solenoid valve SVⅢ, and a seat airbag. One end of the seat air supply branch is connected to the high-pressure main air circuit via a one-way valve, and the other end is connected to the seat airbag via a pressure reducing valve and a safety valve. SVⅢ is located on the seat air supply branch. The camera cleaning module includes a cleaning air supply solenoid valve SVⅤ. One end of SVⅤ is connected to the outlet branch of the compressor pump, and the other end is connected to the camera cleaning device. The external air source module includes multiple external air supply solenoid valves. One end of each solenoid valve is connected in parallel to the outlet branch of the compressor pump, and the other end serves as an external air interface for scenarios such as tire inflation, air mattress inflation, and tent inflation. The compressor pump has a filter at the air inlet end, and the exhaust valve EV is used for system depressurization and exhaust. The dryer can be equipped with a heating regeneration device to realize the recycling and regeneration of the desiccant.The automotive air supply system described in this invention has the following advantages: 1. High system integration, reduced cost and leakage points: The air demand of seats, suspension, camera cleaning, and external air sources is integrated into a single air circuit, using only a single pump for air supply, significantly reducing the number of compressor pumps, valve groups, and pipe joints, effectively reducing leakage points; the elimination of independent air tanks and water vapor separators for seats simplifies the system structure, further reducing component costs and vehicle weight, which is beneficial for vehicle lightweighting; 2. Semi-closed suspension system, balancing energy consumption and cost advantages: Compared to open systems, the air spring can recover gas to air tank 1 when it descends, without direct discharge, resulting in higher gas utilization and lower noise; Compared to purely closed systems, the air spring can descend without activating the pump when the pressure difference is large, with fewer solenoid valves, simpler control logic, lower cost, simpler assembly process, and significantly reduced energy consumption; 3. Flexible seat air supply modes, adaptable to different air usage scenarios: The seat system supports two modes: pump-operated pressurized air supply and direct air supply from the air tank. 1. **Initial Pump Activation:** Ensures adequate air supply pressure. When air usage is slow, it draws air directly from the storage tank to reduce energy consumption, balancing air supply efficiency and energy control. A safety valve is also included to ensure the safety of the seat airbags. 2. **Superior Gas Drying Effect, Enhanced Cabin Health:** All gas output from the compressor pump is dried by a dryer. Compared to traditional seat air supply systems that only pass through a water vapor separator, this provides better drying and effectively prevents mold and bacterial growth in the seat airbags caused by residual moisture. The dryer can be equipped with a heating regeneration device to recycle the desiccant, extending its lifespan and reducing maintenance costs. 3. **Strong External Air Source Expandability, Adapting to Multiple Air Usage Scenarios:** The external air source module uses a multi-electrode parallel structure, allowing for the expansion of multiple air supply interfaces as needed. It supports various external air usage scenarios such as tire inflation, air mattress inflation, and tent inflation, improving user convenience. 4. **High Pumping Efficiency and Fast Response:** When the air springs rise, air can be drawn directly from storage tank 1, eliminating the need for atmospheric intake, significantly increasing pumping speed and shortening the vehicle height adjustment response time. Attached Figure Description
[0019] The following is a brief explanation of the contents depicted in the accompanying drawings and the markings therein: Figure 1 This is a schematic diagram of the automotive air supply system of the present invention. The labels in the attached diagram are as follows: 1. Gas line I; 2. Solenoid valve SVⅠ; 3. Solenoid valve SVⅡ; 4. Gas tank I; 5. Branch pipe; 6. Suspension gas line; 7. Air inlet; 8. Gas line II; 9. Seat airbag; 10. Compression pump (air pump); 11. Gas line III; 12. Gas line IV; 13. Solenoid valve SVⅢ; 14. Exhaust line; 15. Dryer; 16. Exhaust valve EV; 17. Filter; 18. Check valve; 19. Pressure reducing valve; 20. Gas line V; 21. Solenoid valve SVⅤ; 22. Pressure sensor P; 23. Safety valve; 24. External gas supply solenoid valve. Detailed Implementation
[0020] The following description, with reference to the accompanying drawings, provides a more detailed explanation of the specific embodiments of the present invention, including the shape and structure of each component, the relative positions and connections between the parts, the functions and working principles of each part: As attached Figure 1As shown, this invention is an automotive air supply system. Gas pipeline I1 connects to an air tank I4. Solenoid valves SVⅠ2 and SVⅡ3 are installed on gas pipeline I1 at both ends of the air tank I4. One end of gas pipeline I1 connects to a branch pipe 5, which in turn connects to multiple suspension gas pipelines 6. Each suspension gas pipeline 6 is equipped with a control solenoid valve and multiple air springs. The other end of gas pipeline I1 is an air inlet 7. One end of gas pipeline II8 connects to the gas pipeline I1 between the solenoid valve SVⅡ3 and the air inlet 7. Gas line II8 is connected to the seat airbag 9 at one end, and a compressor pump 10 is installed on gas line II8. Gas line III11 is connected at one end to gas line II8 located between the compressor pump 10 and the seat airbag 9, and at the other end to branch pipe 5. Gas line IV12 is connected at one end to gas line I1 between solenoid valve SVⅠ2 and solenoid valve SVⅡ3, and at the other end to gas line II8 between the compressor pump 10 and the seat airbag 9. A solenoid valve SVⅢ13 is installed on gas line IV12. To address the shortcomings of the prior art, an improved technical solution is proposed. The structure is equipped with a compressor pump, a dryer (which can be configured with a heating and regeneration device), a safety valve, as well as a suspension system, a seat system, a camera cleaning module, and an external air source module. The compressor pump is a central air source pump, which can centrally supply air to all air-using devices through a single pump. The suspension system is a semi-closed structure, including an air tank I4, an exhaust valve EV, multiple air springs (e.g., air springs FL, FR, RL, and RR), suspension solenoid valves SVII and SVI, and multiple control solenoid valves corresponding to each air spring (e.g., control solenoid valves AVI, AVII, AVIII, and AVIV). A pressure sensor P is used to monitor the real-time pressure data of the entire system and feed the data back to the vehicle ECU, which then performs the action control.The outlet of the compressor pump is connected to the main air circuit of the suspension after passing through a dryer. Air tank I is connected to the inlet of the compressor pump via solenoid valve SVⅡ. The air spring is connected to the main air circuit in parallel via multiple control solenoid valves. SVⅠ is located in the circuit between the air spring and air tank I. The seat system does not have an independent air tank or water separator. The seat system includes a pressure reducing valve, a safety valve, solenoid valve SVⅢ, and a seat airbag. One end of the seat air supply branch is connected to the high-pressure main air circuit after the dryer via a one-way valve, and the other end supplies air to the seat airbag via a pressure reducing valve and a safety valve. SVⅢ is located in the seat air supply branch. On the air branch line; the camera cleaning module includes a cleaning air supply solenoid valve SVⅤ, one end of which is connected to the air outlet branch of the compressor pump, and the other end is connected to the camera cleaning device; the external air source module includes multiple external air supply solenoid valves, one end of which is connected in parallel to the air outlet branch of the compressor pump, and the other end of which serves as an external air interface for scenarios such as tire inflation, air mattress inflation, and tent inflation; the air inlet end of the compressor pump is equipped with a filter, the exhaust valve EV is used for system depressurization and exhaust, and the dryer can be equipped with a heating regeneration device to realize the recycling and regeneration of the desiccant.The automotive air supply system described in this invention has the following advantages: 1. High system integration, reduced cost and leakage points: The air demand of seats, suspension, camera cleaning, and external air sources is integrated into a single air circuit, using only a single pump for air supply, significantly reducing the number of pumps, valves, and pipe joints, effectively reducing leakage points; the elimination of the independent air tank and water-vapor separator for seats simplifies the system structure, further reducing component costs and vehicle weight, which is beneficial for vehicle lightweighting; 2. Semi-closed suspension system, balancing energy consumption and cost advantages: Compared to open systems, the air spring can recover gas to the air tank 1 when it descends, without direct discharge, resulting in higher gas utilization and lower noise; Compared to purely closed systems, the air spring can descend without activating the pump when the pressure difference is large, requiring fewer solenoid valves, simpler control logic, lower cost, simpler assembly process, and significantly reduced energy consumption; 3. Flexible seat air supply modes, adaptable to different air usage scenarios: The seat system supports two modes: pump-pressurized air supply and direct air supply from the air tank. 1. **Initial Pump Function:** The pump ensures adequate air supply pressure. When air usage is slow, it draws air directly from the storage tank to reduce energy consumption, balancing air supply efficiency with energy control. A safety valve is also included to ensure the safety of the seat airbags. 2. **Superior Gas Drying Effect, Enhanced Cabin Health:** The gas output from the compressor pump is dried by a dryer. Compared to traditional seat air supply systems that only pass through a water vapor separator, this provides better drying and effectively prevents mold and bacterial growth in the seat airbags caused by residual moisture. The dryer can be equipped with a heating regeneration device to recycle the desiccant, extending its lifespan and reducing maintenance costs. 3. **Strong External Air Source Expandability, Adapting to Multiple Air Usage Scenarios:** The external air source module uses a multi-electrode parallel structure, allowing for the expansion of multiple air supply interfaces as needed. It supports various external air usage scenarios such as tire inflation, air mattress inflation, and tent inflation, improving user convenience. 4. **High Pumping Efficiency and Fast Response:** When the air springs rise, air can be drawn directly from storage tank 1, eliminating the need for atmospheric intake, significantly increasing pumping speed and shortening the vehicle height adjustment response time.
[0021] The gas pipeline Ⅲ11 is connected to the gas pipeline Ⅱ8 position between the connection point of the compression pump 10 and the gas pipeline Ⅴ20 and the gas pipeline Ⅱ8.
[0022] A dryer 15 is installed on the gas pipeline III11, which is connected to the exhaust pipeline 14. An exhaust valve EV16 is installed on the exhaust pipeline 14. In this structure, the dryer 15 dries the supplied gas, effectively preventing mold and bacterial growth in the seat airbags caused by residual moisture. The gas pumped by the compressor 10 to the air tank 4 needs to be processed by the dryer 15. At this time, the gas has removed moisture and is stored in the air tank 4. When the seat system needs air supply, it draws dry gas stored in the air tank 4, and does not directly draw air from the atmosphere to supply air to the seat. Therefore, the gas supplied to the seat system by the system meets the drying requirements.
[0023] A filter 17 is installed on the gas pipeline I1, and the filter 17 is located between the connection point of the gas pipeline II8 and the gas pipeline I1 and the air inlet 7.
[0024] A one-way valve 18 and a pressure reducing valve 19 are installed on gas line II 8. The pressure reducing valve 19 is located between the connection point of gas line II 8 and gas line IV and the seat airbag 9. The one-way valve 18 is located between the connection point of gas line II 8 and gas line IV and the compression pump 10.
[0025] Gas pipeline II8 is connected to gas pipeline V20, which is located between check valve 18 and gas pipeline III11. Solenoid valve SVV21 is installed on gas pipeline V20.
[0026] The gas pipeline Ⅲ11 is connected to a pressure sensor P22 near the branch pipe 5. In this structure, the pressure sensor is used to monitor the actual pressure value of the gas pipeline in real time and feed it back to the ECU.
[0027] A safety valve 23 is installed between the pressure reducing valve 19 on the gas pipeline II8 and the seat airbag 9.
[0028] This invention also relates to a semi-closed central air supply system, which integrates the air requirements of the seat system, suspension system, camera cleaning, and multi-interface external air sources into a single air circuit, achieving centralized air supply by a single pump; it eliminates the need for a dedicated air tank for seats and an independent water vapor separator, simplifying the structure and reducing costs; it adopts a semi-closed suspension structure, combining the advantages of open and closed systems, achieving gas recovery and utilization, and reducing energy consumption; it also optimizes the gas drying and seat air supply logic, improving the air source utilization rate and air supply reliability. The control method for the air supply circuit of automotive air-using components includes a control method for the suspension system, the steps of which are as follows: Air springs rise: When the compressor pump 10 is working, the solenoid valve SVⅡ3 and multiple control solenoid valves are opened. The compressed gas in the air tank Ⅰ4 is pressurized by the compressor pump 10 and then delivered to multiple air springs to raise the vehicle height. Air spring descent: Different control logics are used based on the pressure difference between the air spring and air tank I4: When the pressure difference is greater than the set high value: the compressor pump 10 does not work, the solenoid valve SVⅠ2 and multiple control solenoid valves open, and the gas in the air spring flows into the air storage tank Ⅰ4 to achieve energy-free recovery. When the pressure difference is less than the set high value: exhaust gas directly to the outside through the exhaust valve EV16; When the seat airbag 11 of the seat system is inflated, two air supply modes are selected according to the air supply speed: When a gas-consuming device with a high gas consumption rate is working (such as a side wing support function that requires a rapid response): the compressor pump 10 works, the solenoid valve SVⅡ3 opens, and the gas in the gas tank Ⅰ4 is pressurized by the compressor pump 10, and then supplied to the seat airbag 9 after being stabilized by the one-way valve 18 and the pressure reducing valve 19.
[0029] When operating air-consuming devices with slow air consumption (such as massage functions): there is no need to start the compressor pump 10. The solenoid valve SVⅢ13 opens, and the gas in the air tank Ⅰ4 is directly supplied to the seat airbag 9 after being stabilized by the pressure reducing valve 19, thus reducing energy consumption; the safety valve 23 is used for overpressure protection of the seat air supply branch to prevent damage to the seat airbag 9 due to excessive pressure.
[0030] In the system of this invention, there is no range setting for the speed of air use. The active side wing support / cornering side wing wrapping is linked to vehicle steering, braking and other signals, which is a driving safety assistance function. The support must be synchronized with the instantaneous change of vehicle posture. Therefore, it belongs to the category of air-using devices with fast air use speed. Seat massage pursues rhythmic body sensation and does not need to pursue extreme speed. People have low sensitivity to the speed of massage and only require a uniform rhythm. Therefore, it belongs to the category of air-using devices with slow air use speed.
[0031] It also includes control methods for other systems, and the steps of the control methods are as follows: Camera cleaning control: When the compressor pump 10 is working, the solenoid valve SVⅤ21 is opened, and compressed gas is delivered to the camera cleaning device to achieve air blowing cleaning of the lens; External gas supply: When the compressor pump 10 is working, the external gas supply solenoid valve 24 corresponding to the external gas usage scenario opens, and compressed gas is supplied to external equipment such as tires and / or air mattresses and / or tents and / or oxygen generators through the corresponding interface. More external gas usage devices can be supported by expanding the number of solenoid valves. Gas drying and regeneration control: The gas output by the compressor pump 10 is dried by the dryer to remove water vapor and ensure the gas supply to the gas module is dry; the dryer is equipped with a heating regeneration device, which restores the drying capacity by heating and regeneration when the desiccant is saturated with water, thus extending the service life of the desiccant.
[0032] The automotive air supply system and its control method described in this invention provide a semi-closed central air supply system that integrates the air requirements of the seat system, suspension system, camera cleaning, and multi-interface external air sources into a single air circuit, achieving centralized air supply by a single pump. It eliminates the need for a dedicated air tank for seats and an independent water-vapor separator, simplifying the structure and reducing costs. The semi-closed suspension structure combines the advantages of both open and closed systems, enabling gas recovery and reducing energy consumption. Optimized gas drying and seat air supply logic improve air source utilization and reliability.
[0033] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.
Claims
1. An automotive air supply air path system, characterized by: Gas pipeline I (1) is connected to gas storage tank I (4). Solenoid valves SVⅠ (2) and SVⅡ (3) are installed on gas pipeline I (1) at both ends of gas storage tank I (4). One end of gas pipeline I (1) is connected to branch pipe (5). Branch pipe (5) is connected to multiple suspension gas pipelines (6). Each suspension gas pipeline (6) is equipped with a control solenoid valve and multiple air springs. The other end of gas pipeline I (1) is an air inlet (7). One end of gas pipeline II (8) is connected to the gas pipeline I (1) between solenoid valve SVⅢ (3) and air inlet (7). The other end of gas pipeline II (8) is connected to Connect the seat airbag (9), install a compressor pump (10) on gas line II (8), one end of gas line III (11) is connected to gas line II (8) between the compressor pump (10) and the seat airbag (9), the other end of gas line III (11) is connected to a branch pipe (5), one end of gas line IV (12) is connected to gas line I (1) between solenoid valve SVⅠ (2) and solenoid valve SVⅡ (3), the other end of gas line IV (12) is connected to gas line II (8) between the compressor pump (10) and the seat airbag (9), and a solenoid valve SVⅢ (13) is installed on gas line IV (12).
2. The automotive air supply system according to claim 1, characterized in that: The gas line Ⅲ (11) is connected to the gas line Ⅱ (8) position between the connection point of the compression pump (10) and the gas line Ⅴ (20) and the gas line Ⅱ (8).
3. The automotive air supply system according to claim 1, characterized in that: A dryer (15) is installed on the gas pipeline III (11), the gas pipeline III (11) is connected to the exhaust pipeline (14), and an exhaust valve EV (16) is installed on the exhaust pipeline (14).
4. The automotive air supply system according to claim 1, characterized in that: A filter (17) is installed on the gas pipeline I (1). The filter (17) is located between the connection point of the gas pipeline II (8) and the gas pipeline I (1) and the air inlet (7).
5. The automotive air supply system according to claim 1, characterized in that: A one-way valve (18) and a pressure reducing valve (19) are provided on the gas pipeline II (8). The pressure reducing valve (19) is located between the connection point of gas pipeline II (8) and gas pipeline IV (12) and the seat airbag (9). The one-way valve (18) is located between the connection point of gas pipeline II (8) and gas pipeline IV (12) and the compression pump (10).
6. The automotive air supply system according to claim 1, characterized in that: Gas pipeline II (8) is connected to gas pipeline V (20), which is located between check valve (18) and gas pipeline III (11). Solenoid valve SV (21) is installed on gas pipeline V (20).
7. The automotive air supply system according to claim 1, characterized in that: The gas pipeline Ⅲ (11) is connected to the pressure sensor P (22) near the branch pipe (5).
8. The automotive air supply system according to claim 1, characterized in that: A safety valve (23) is installed between the pressure reducing valve (19) and the seat airbag (9) on the gas pipeline II (8).
9. A control method for the air supply circuit of an automotive pneumatic component, characterized in that: This includes a control method for the suspension system, and the steps of the control method are as follows: Air spring rise: The compressor pump (10) works, the solenoid valve SVⅡ (3) and multiple control solenoid valves open, and the compressed gas in the air tank I (4) is pressurized by the compressor pump (10) and delivered to multiple air springs to realize the rise of the vehicle body height; Air spring descent: Different control logics are used based on the pressure difference between the air spring and the air tank I (4): When the pressure difference is greater than the set high value: the compressor pump (10) does not work, the solenoid valve SVⅠ (2) and multiple control solenoid valves open, and the gas in the air spring flows into the gas storage tank Ⅰ (4) to achieve energy-free recovery; When the pressure difference is less than the set high value: exhaust gas is directly discharged to the outside through the exhaust valve EV (16); When the seat airbag (11) of the seat system is inflated, two air supply modes are selected according to the air supply speed: When the gas-using equipment with a fast gas consumption speed is working: the compressor pump (10) works, the solenoid valve SVⅡ (3) opens, and the gas in the gas storage tank Ⅰ (4) is pressurized by the compressor pump (10), and then supplied to the seat airbag (9) after being stabilized by the pressure reducing valve (19). When the gas-consuming equipment with a slow gas consumption rate is working: there is no need to start the compressor pump (10), the solenoid valve SVⅢ (13) is opened, and the gas in the gas tank Ⅰ (4) is directly supplied to the seat airbag (9) after being stabilized by the pressure reducing valve (19), thus reducing energy consumption; the safety valve (23) is used for overpressure protection of the seat air supply branch to avoid damage to the seat airbag (9) due to excessive pressure.
10. The air supply circuit for automotive air components according to claim 1, characterized in that: It also includes control methods for other systems, and the steps of the control methods are as follows: Camera cleaning control: The compressor pump (10) works, the solenoid valve SVⅤ (21) opens, and the compressed gas is delivered to the camera cleaning device to achieve air blowing cleaning of the lens; External gas supply: When the compressor pump (10) is working, the external gas supply solenoid valve (24) corresponding to the external gas usage scenario is opened, and compressed gas is supplied to the external equipment tires and / or air mattresses and / or tents and / or oxygen generators through the corresponding interface. Gas drying and regeneration control: The gas output by the compressor pump (10) is dried by the dryer to remove water vapor and ensure the gas supply of the gas module is dry; the dryer is equipped with a heating regeneration device, which restores the drying capacity by heating and regeneration when the desiccant is saturated with water, thus extending the service life of the desiccant.