CN-224224859-U - Integrated air suspension control system

CN224224859UCN 224224859 UCN224224859 UCN 224224859UCN-224224859-U

Abstract

The utility model discloses an integrated air suspension control system which comprises an air supply valve body unit, an air filtering dryer, an air storage tank, a plurality of air springs, a high-pressure dryer, a one-way valve b and a silencer, wherein the air supply valve body unit is provided with a first ventilation port, a second ventilation port and a plurality of third ventilation ports, the air filtering dryer is provided with an air inlet and outlet nozzle and an air inlet and outlet hole, the air inlet and outlet nozzle is communicated with the first ventilation port, the air storage tank is communicated with the second ventilation port, the plurality of air springs are connected with the plurality of third ventilation ports in a one-to-one correspondence manner, the high-pressure dryer is connected between a reversing valve group and an air circuit output end of the air supply valve body unit in series, one end of the high-pressure dryer is simultaneously connected with the first reversing valve and the fourth reversing valve, and the other end of the high-pressure dryer is connected with a safety valve, an air outlet valve and an air pump in series. The utility model has the beneficial effects that the primary drying of the air filter dryer and the secondary drying of the high-pressure dryer are combined, the dew point of the system gas humidity is ensured to be less than or equal to minus 40 ℃, and the accumulated water corrosion in the valve body is avoided.

Inventors

LIU XIAOHUI
YU LIANG
WU ZIPING
XIE ZEJIN
ZHENG CHENG
QIN TAO

Assignees

比博(浙江)汽车电子有限公司

Dates

Publication Date: 20260512
Application Date: 20250729

Claims (5)

1. The integrated air suspension control system is characterized by comprising an air supply valve body unit, an air filtering dryer, an air storage tank, a plurality of air springs, a high-pressure dryer, a one-way valve b and a silencer, wherein the air supply valve body unit is provided with a first ventilation port, a second ventilation port and a plurality of third ventilation ports, the air filtering dryer is provided with an air inlet and outlet nozzle and an air inlet and outlet hole, the air inlet and outlet nozzle is communicated with the first ventilation port, the air storage tank is communicated with the second ventilation port, the plurality of air springs are correspondingly connected with the plurality of third ventilation ports one by one, the high-pressure dryer is connected between a reversing valve group and an air path output end of the air supply valve body unit in series, one end of the high-pressure dryer is simultaneously connected with a first reversing valve and a fourth reversing valve, the other end of the high-pressure dryer is connected with a safety valve, an air outlet valve and an air pump in series, and the output end of the air outlet valve is sequentially connected with the one-way valve b and the silencer in series, and an orifice b is connected between the one-way valve b and the first ventilation port in series, and a one-way valve a is arranged at a connecting node; the system realizes four working states through valve body switching: The air suction state is that the first ventilation port and the second ventilation port are conducted, the third ventilation port is closed, and external air is filtered and dried by the air filtering dryer, and then is secondarily dried by the high-pressure dryer and compressed to the air storage tank; The air suspension lifting state is that the second air vent port and the third air vent port are conducted, the first air vent port is closed, and air in the air storage tank enters the air spring through the high-pressure dryer to lift the vehicle body; The air suspension descending state is that the second air vent port and the third air vent port are conducted, the first air vent port is closed, and air spring gas flows back to the air storage tank to lower the vehicle body; And in the exhaust state, the first ventilation port and the third ventilation port are conducted, the second ventilation port is closed, and air spring gas is discharged to the outside through the one-way valve b, the throttle hole b, the silencer and the air filtering dryer in sequence.
2. The integrated air suspension control system of claim 1, wherein the air supply valve body unit comprises an air supply valve group, a reversing valve group, a safety valve, an exhaust valve, a sensor and a motor-driven air pump, and the air supply valve group comprises four independent air supply valves for respectively controlling the air passage on-off of the four air springs.
3. The integrated air suspension control system of claim 2, wherein the reversing valve group is composed of four two-position two-way electromagnetic valves, the first reversing valve and the fourth reversing valve control the air passage input of the high-pressure dryer, and the second reversing valve and the third reversing valve control the air passage switching of the air spring.
4. The integrated air suspension control system of claim 1, wherein the air filter dryer integrates a silencing component, a filtering component and a drying component, and external air enters the air path after being subjected to noise reduction by the silencing component, filtering by the filter element and drying by the drying agent.
5. The integrated air suspension control system of claim 1, wherein the check valve a is disposed between the air filter dryer and the air pump inlet end, and the safety valve, and prevents reverse flow of air.

Description

Integrated air suspension control system Technical Field The utility model relates to the technical field of vehicle air suspensions, in particular to an integrated air suspension control system. Background The air suspension system realizes dynamic adjustment of the height and rigidity of the vehicle body through an air spring, is widely applied to commercial vehicles, passenger vehicles and special vehicles, and the core function of the air suspension system depends on the stability of an air source supply unit and the reliability of air path control logic. In the prior art, an air suspension control system is generally composed of an independent air compressor, a dryer, an air storage tank, a valve body group and pipelines, and has the technical defects that a single-stage dryer (such as an air filtering dryer) is adopted in the traditional system to treat an air source, but under the working condition of high humidity environment or frequent inflation and deflation, the dew point of the air is difficult to be controlled below-40 ℃ by single drying, so that water vapor remains in the air storage tank or the valve body, and the problems of corrosion, icing blockage and the like are caused. For example, the drying system only adsorbs moisture through the drying agent, adsorption saturation easily occurs after long-term use, the drying agent needs to be replaced frequently, and maintenance cost is high. In the air spring exhausting process, high-pressure air is directly exhausted to the outside through the valve body, the flow speed can reach 30-50m/s, and pneumatic noise of more than 85dB is generated (refer to GB/T25982-2010 external noise limit value and measuring method of automobile acceleration driving). Meanwhile, the lack of the buffer device causes high-frequency impact of air flow on the valve body sealing piece, so that abrasion of parts such as the check valve and the sealing piece is aggravated, for example, the deformation rate of the check valve sealing piece exceeds 15% after long-term use due to an infinite position structure, and the risk of sealing failure is obviously improved. In the prior art, most of valve body groups, dryers, sensors and other parts are distributed and connected through complex pipelines, so that the installation space occupation of ① is increased (more than 40% of the integrated design volume), ② pipeline joints are easy to leak, the air tightness of the system is reduced, and ③ multiple valve bodies are independently controlled to coordinate the actions of a plurality of electromagnetic valves, the response delay exceeds 200ms, and the height adjustment precision of a vehicle body is affected. The functions of air suction, air charging and air discharging of the traditional system are realized through independent valve bodies, such as an air suction dependent air inlet valve, an air charging and discharging dependent reversing valve and an air discharging dependent air discharging valve, so that the number of the valve bodies is 8-12. The redundant valve body not only increases the cost, but also is easy to cause misoperation due to electromagnetic interference or signal delay, for example, when the exhaust valve and the reversing valve are in cooperative failure, abnormal gas emission of the gas storage tank can be caused, and sudden settlement of the vehicle body is caused. The existing check valve mostly adopts a sealing plate and spring structure, when the piston is reset, the sealing plate depends on elastic deformation to cover the through hole, but the spring is easy to fatigue under high-frequency vibration, so that the opening angle of the sealing plate exceeds 30 degrees (the design threshold is 15 degrees), and gas backflow is caused. For example, in a commercial vehicle air suspension system, due to the backflow problem of a one-way valve, the pumping efficiency of an air pump is reduced by 25%, and 15% of motor power is consumed additionally for compensation. In order to solve the problems, the invention provides an integrated air suspension control system which solves the defects of low reliability, large noise, insufficient integration level and the like in the prior art by optimizing a drying process, integrating a valve body unit, improving an exhaust noise reduction structure and a one-way valve design and meets the technical requirements of vehicles on high efficiency, low noise and long service life of an air suspension system. Disclosure of utility model The present utility model is directed to an integrated air suspension control system that addresses one or more of the above-described problems of the prior art. The integrated air suspension control system is characterized by comprising an air supply valve body unit, an air filter dryer, an air storage tank, a plurality of air springs, a high-pressure dryer, a one-way valve b and a silencer, wherein the air supply valve body unit is provided with a first ventilation port, a second ventilation