Pressure control valve for Mercedes-Benz air suspension A2213201704

Explanation of working principle of Mercedes-Benz air suspension

1, horizontal control and horizontal adjustment function

The first two functions of the air suspension system are mutually controlled and can be divided into the following three states.

(1) Closed holding state:

When the vehicle is lifted, the system will close the relevant solenoid valves, and the computer will remember the height of the vehicle body to keep the original height of the vehicle after falling.

(2) Normal state, that is, engine running state:

when the vehicle is parked, if the height of the vehicle body changes by more than 10mm after a certain door or luggage compartment cover is opened, the system will readjust the height of the vehicle body; During driving, if the body height changes more than 20mm, the system will readjust the body height every 15mIn.

(3) Wake-up state (working time is about 1 min):

When the system control unit is awakened by the remote control key, door switch and trunk lid switch, the system will check the height of the car body through the car body level sensor. If the height of the car body is more than 30mm lower than the normal height, the gas storage tank will provide pressure to raise the car body to the normal height, and the pressure of the pressure storage tank must be greater than 1.1MPa at this time; If the height of the car body is more than 65mm below the normal height and the pressure of the pressure storage tank is less than 1.1MPa, the system will command the air pump to work to provide pressure to make the height of the car body reach-－63mm, and the battery voltage at this time must be greater than 12.4 V; If the height of the car body is increased by more than 10mm due to unloading, the system will give up lowering the car body to the normal height.

2. ADS function

The ADS function can adjust the hardness and softness of the shock absorber. The shock absorber has three gears: normal, Microsoft and hard. This function can be controlled by the control button in the cab.

The horizontal adjustment function of the car body can also be operated by the car body control button in the cab. When you press the button, the car body will automatically rise by 25mm, and then press the car body again to return to the normal state. Normal state refers to the height of the vehicle stored in the system control computer when it leaves the factory.