Some common problems about pneumatic butterfly valve of automobile air spring
The air spring products of Shanghai Songxia Pneumatic Butterfly Valve Co., Ltd. are mainly used on the bases of buses, luxury cars, trucks, commercial vehicles, rail cars, industrial machinery, industrial equipment, etc. Songxia welcomes new and old customers to call: 021-6344211. The pneumatic butterfly valve of automobile air spring can rapidly attenuate the vibration of the frame and body when the automobile is running, and improve the smoothness and comfort of the automobile. In short, it is used to absorb the vibration force and stabilize the car body. The spring is used to maintain the height of the car body and play a buffering role in bumping. But would it be more comfortable if there were only springs? Not at all. If there are only springs, the car body will bounce up and down like a spring toy after bumping, so it must cooperate with the damping cylinder to control the effect of spring compression and springback.
Therefore, the mutual cooperation of the spring and the damping cylinder can determine the hardness of a vehicle's shock absorption; The control balance of comfort and movement is the difficulty of pneumatic butterfly valve tuning. Luxury models usually use electronically adjustable damping shock absorbers, so that the suspension stiffness can be adjusted at any time according to the different road surfaces. Car fans who are obsessed with sports driving will modify their shock absorption system to make the car lower and harder and further improve the handling.
In actual use, automobile pneumatic butterfly valves may produce noise, which is mainly caused by the collision between the pneumatic butterfly valve and the leaf spring, frame or shaft, damage or falling of the rubber pad, deformation of the dust cylinder of the pneumatic butterfly valve, insufficient oil and other reasons. Find out the causes and repair them. Now let's introduce some common questions about the pneumatic butterfly valve for cars!
1、 Why should automobile pneumatic butterfly valve be maintained?
Whether the air spring of a car is a vulnerable part depends on the road conditions. In case of frequent bumpy driving, the pneumatic butterfly valve will stretch at a high frequency, and the oil temperature in the pneumatic butterfly valve will gradually rise, which is not conducive to the long-term use of the pneumatic butterfly valve.
The operation of the pneumatic butterfly valve will directly affect the stability of the vehicle and the service life of other parts, or the oil seal washer, the seal washer is broken, the storage cylinder cover nut is loose, or there is a collision between the pneumatic butterfly valve and the leaf spring, frame or shaft, or there is evidence of oil leakage. In case of oil leakage, it is undoubtedly very dangerous.
Therefore, we should keep the pneumatic butterfly valve in good working condition. Regular inspection and maintenance is a detail control problem.
2、 What symptoms will appear if the automobile pneumatic butterfly valve is broken?
1. Stop the car after driving 10km on the road with poor road conditions, touch the pneumatic butterfly valve shell with your hand. If it is not hot enough, it means that there is no resistance inside the pneumatic butterfly valve, and the pneumatic butterfly valve does not work. At this time, appropriate lubricating oil can be added and the test can be carried out again. If the shell is heated, it means that there is a lack of oil inside the pneumatic butterfly valve, which should be filled with enough oil, otherwise, it means that the pneumatic butterfly valve is invalid.
2. Press the bumper firmly and release it. If the car jumps no more than once or twice, the pneumatic butterfly valve works well. If you keep nodding and bowing up and down and look very elastic, it will be broken.
3. When the car is running slowly and emergency braking occurs, if the car vibrates violently, it indicates that there is a problem with the pneumatic butterfly valve.
4. Dismantle the pneumatic butterfly valve to make it stand upright, clamp the lower connecting ring on the bench clamp, and pull and press the shock absorber rod several times. At this time, there should be stable resistance. The resistance of pulling upward to recover should be greater than the resistance of pressing downward. If the resistance is unstable or no resistance, it may be due to the lack of oil inside the pneumatic butterfly valve or the damage of valve parts, repair or replace the parts.
3、 How much does it cost to change the air suspension airbag?
1. The double cylinder inflatable shock absorber of ordinary cars is generally 100-200 yuan, and that of minicars is about 100 yuan, or even lower. In addition, the front pneumatic butterfly valve is usually cheaper than the rear pneumatic butterfly valve. For example, the factory price of the shock absorber of a Corolla car made by FAW Toyota is about 700 yuan.
2. The SP parts sold to us by the automobile factory will naturally be higher than the ex factory price, which is also a big part of the profit source of the automobile factory. For example, at the 4S store, the price of an Audi A6 shock absorber is nearly 2000 yuan, and the original accessory is Monroe, Belgium. Of course, you can also change to another manufacturer, and the price will be much cheaper, such as FAW East Machinists.
3. The price of different types of shock absorbers is also different. Crown uses a single cylinder inflatable shock absorber, whose price is higher than the ordinary double cylinder inflatable shock absorber. Some C-class cars also use adjustable damping force shock absorbers, electromagnetic shock absorbers, etc., which will cost more.
4、 Under what circumstances does the automobile need to replace the pneumatic butterfly valve?
Generally speaking, if the shock absorber is noisy, hard, soft and leaking, it should be replaced. However, when the above problems are found, do not judge the replacement of the shock absorber too early. If there is a noise, check whether the installation is correct; If it is too hard or too soft, check whether there is a problem with the spring and the fixed connecting shock absorber; If oil leaks, check whether the cylinder cover is fastened.
The Songxia pneumatic butterfly valve manufacturer reminds everyone that the pneumatic butterfly valve may produce noise in actual use, which is mainly caused by the collision between the pneumatic butterfly valve and the leaf spring, frame or shaft, damage or falling of the rubber pad, deformation of the dust cylinder of the pneumatic butterfly valve, insufficient oil and other reasons. The reason should be found out and repaired.
The above are some common questions about pneumatic butterfly valves for automobiles. For more information on air spring procurement, please visit the official website of Shanghai Songxia Pneumatic Butterfly Valve Co., Ltd.: //www.shsxjzq.cn/

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