An introduction to the structural characteristics and performance advantages of Sinotruk air suspension system
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China National Heavy Duty Trucks displayed the heavy trucks that assemble air suspension products at the 2011 Business Conference and 2011 Shanghai Auto Show, and promoted it in the market, which has aroused the interest of many users.
China National Heavy Duty Truck's air suspension system is the KM3011 series air suspension system, which is provided by Shanghai Keman Vehicle Component Systems Co., Ltd. It can be assembled on CNHTC's 6X4 and 4X2 tractor series. The following is the specific technology of this product. detail. 
Product structure features:
The Kerman KM3011 series air suspension system uses a composite air suspension structure with a quarter-oval, variable-section leaf spring and airbag. One airbag is arranged on the right and left, and it is placed directly behind the axle. One shock absorber is arranged on the left and right sides of the frame, no transverse stabilizer bar is installed, and a transverse thrust bar is added directly above the axle to transmit the transverse force of the axle.
The limit jump of the axle is limited by an external limit block, and the down limit is limited by the internal hydraulic limit of the shock absorber. The standard of this system control is one height control valve on the left and right, and manual lift control through the rotary slide valve. 
Product performance advantages:
1. When the truck's weight changes and the car is in various movements, it can achieve automatic leveling of the vehicle's height.
2. The air spring has a relatively constant low natural vibration frequency, which can improve the smoothness of the car, improve the ride comfort, and play a good role in protecting the goods; the service life of the auto parts, especially the electrical components.
3. Through the principle of gas communication in the air spring, the balance between the axle load and brake force of the multi-axle can be easily achieved, and the driving safety of the vehicle can be improved.
4, when the car has partial load, the car can still maintain balance.
5, air suspension has the advantage of maintenance-free, reduce maintenance downtime, improve the operating efficiency of the car.
6. Through the rotary slide valve, the height adjustment of the body can be achieved, which makes it easier for the trailer to hang off and hang.
7. The air suspension has a simple structure and light weight, and its weight is reduced by 40% compared with the conventional leaf spring suspension. 
Main structure of air suspension system
Integral membrane type airbags: large bearing capacity
Two-piece variable cross-section: The leaf spring has a large rigidity, which improves the stability of the entire vehicle. The bushing is made of special materials and is maintenance-free.
Shock Absorbers: Professional Matching Design, Optimized Performance
Transverse thrust rod: forging structure, light weight, high strength, long service life 
China National Heavy Duty Truck Air Suspension Systems, like leaf springs, will not increase their prices. The application of many new technologies has been seen in China National Heavy Duty Truck's products. It can be seen from the above introduction that the air suspension products are characterized by light weight and stable operation. For users, there is a better choice.