Air Suspension Spring
Zhejiang Bocheng Automotive Technology Co.Ltd was established in 2012, and located in the core area of the Qianjiang New City in Hangzhou, China. Bocheng is a leading enterprise specializing in R&D, production and sales of air suspension systems. Bocheng is committed to providing air suspension solutions for many luxury automotive brands such as Mercedes-Benz, BMW, Audi, Porsche, Bentley, Rolls Royce and Land Rover.
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Air Suspension springs have been used in heavy duty vehicle suspension systems for nearly a century, where they have been able to provide usefulness by taking advantage of the compressed air required for vehicle braking systems. Air springs have provided a two-fold advantage over mechanical leaf- or coil-springs. One advantage with air suspension is the extra comfort provided by being able to vary the air pressure inside the spring, which changes the spring rate, and therefore, ride quality. Additionally, because variable control over air pressure adjusts the deck or trailer height, aligning loading docks to the level of the deck is possible when dock plates are unavailable.
What Is Air Suspension Spring
Air Suspension Spring are a type of spring used to support a vehicle weight and absorb vibrations from the road. They are responsible for maintaining comfort for passengers and drivers whilst also improving handling and stability of a vehicle.
Advantages of Air Suspension Spring
Smooth Ride
Suspension Spring can absorb shocks and vibrations from the road surface, resulting in a smoother and more comfortable ride for the vehicle occupants. This is achieved through the compression and expansion of the coils, which dissipate the energy generated by bumps and uneven surfaces.
Improved Handling
These springs provide a smooth ride and help maintain tire contact with the road, enhancing the vehicle's stability and maneuverability. By keeping the tires firmly planted on the road, Suspension Spring minimize body roll and improve cornering performance.
Even Weight Distribution
Suspension Spring distribute the vehicle's weight evenly across all four wheels, ensuring better balance and control. This balanced weight distribution maintains stability during acceleration, braking, and cornering, resulting in a safer driving experience.
Versatility
Suspension Spring offer versatility in terms of adjustment and customization. They can be easily adjusted or replaced to modify the vehicle's ride height, offering customization options for different driving conditions or personal preferences. This adaptability makes Suspension Spring suitable for various vehicle types and applications.
Types of Material used in Air Suspension Spring
We work with a variety of steel, copper and titanium alloys as well as superalloys including Inconel, Hastelloy and nickel alloys.
Steel
The most common type of suspension spring material is steel due to its sheer strength, durability, and affordability. This strong rigid material can withstand heavy impacts, loads and resist deformation.
In coil springs we commonly see high carbon steel used due to its durability and compression ability whilst, leaf suspension springs use lower-carbon steel which is more ductile and can easily be formed into a curved shape needed for leaf springs.
Alloy Steel
Alloy steel is a type of steel which contains other materials such as chromium, nickel, and vanadium and offers a higher strength and durability than regular steel and can often be the choice for high performance vehicles such as race cars, high-end sports cars, and heavy-duty trucks. Alloy steel suspension springs can withstand high loads and maintain their performance under harsh conditions, making them ideal for demanding applications.
Titanium
Titanium material is used in suspension springs mainly for high end racing vehicles such as motorcycles and racing cars where every pound makes a significant difference in performance.
Titanium springs are also one of the most lightweight. Titanium suspension springs are highly resistant to corrosion and wear, even in the harshest of environments. Titanium springs are more frequently used for exclusive, high performance racing markets and high stakes competitions.
Composite Materials
We don't make these but it's interesting to look at these composite materials which are also known as carbon fibre and fibreglass. These type of springs are made by weaving materials into a strong, lightweight structure making it ideal for high performance vehicles saving up to 70% weight compared to the common steel springs.
The benefits of using composite suspension springs is their resistance to corrosion and fatigue which increases the life expectancy of the overall performance of the suspension system.
What Makes Air Suspension Spring So Popular
When Air Suspension Spring are combined with shock absorbers, not only does it provide a smoother ride for the driver, but they also make sure that the wheels are in contact with the road at all times, which increases control.
The increased grip is integral to better road handling and general road safety. Icy roads show how a car's handling becomes impossible without adequate grip on the road. Strong suspension springs prevent this dangerous driving from occurring in all but the harshest weather conditions.
Shock absorbers and Air Suspension Spring work together to create a smooth ride. The springs will absorb and release the many minor imperfections in the average road, so you don't feel it, and the shock absorbers help keep your tires gripped to the road.
Types Of Suspension Springs
Here Are The Commonly Known Five Different Types Of Suspension Springs Which Are Mostly Used In The Automobile Vehicles:
Leaf Spring
Leaf spring is referred to as those which consists of total number of leaves which are found to be made of steel plates and are of increasing lengths, from the centre. All the leaves which are responsible for clamping by the centre bolt at the centre and side almost at the sides in order to let the leaves be in the required position.
The main leaf in the leaf spring is found to be longer one as it is having bent at the ends, this is what is known as the spring eyes. The spring eye is observed to be connected to the frame using a shackle. The centre portion of the spring is found to be connected to the front axle by the help of a U-bolt.
Torsion Spring
A torsion spring is referred to as that spring which is also used in an independent suspension system. The torsion suspension spring is the one which is found having a rod which acts under the torsion by taking the shear stresses.
One end of the bar is found to be connected to the frame whereas another end is connected to the wheel arm and is supported in the bearing. The end of the wheel arm is found to be connected to the wheel hub. Whenever the wheel is found hitting the bump, you can note the vibrating up and down, thus a torque on the torsion bar is observed which starts to act as a spring.
Air Bags
The airbags are the ones which are used along with the rubber springs which are used mostly in the foreign cars. Air suspension, hydraulic suspension and hydrogen gas suspension systems are the ones which are also used in the foreign vehicles.
Rubber Spring
The rubber springs are referred to as those springs which are used in the suspension as it is found saving greater energy per unit weight as compared to the steel.
The rubber springs are the ones which are found to be more compact as compared to any other springs. The main advantage of using a rubber spring is that it usually does not fail immediately unlike steel, this is the reason these are considered to be less risky. And also at the same time these springs are found having excellent vibration damping properties.
Factors To Consider When Choosing Air Suspension Spring
When selecting Air Suspension Spring , several factors should be taken into consideration. Firstly, the vehicle type and purpose play a significant role in determining the appropriate suspension springs. Different vehicles have varying weight distributions and handling requirements. For example, a heavyduty truck may require leaf springs to handle heavier loads, while a sports car may benefit from torsion springs for improved handling.
Secondly, the desired ride quality and comfort should be considered. Some suspension springs may offer a stiffer ride, providing better responsiveness and control, while others provide a more comfortable experience with smoother damping characteristics. Understanding the balance between ride comfort and handling performance is essential in choosing the right suspension springs.
Load capacity and weight distribution are also vital factors to consider, especially for vehicles that frequently carry heavy loads. Suspension springs should be selected based on their loadcarrying capacity to ensure optimal vehicle performance and stability. Additionally, the distribution of weight between the front and rear of the vehicle should be taken into account to achieve proper weight balance.
Cost and maintenance considerations should be evaluated. Different suspension springs may vary in terms of initial cost and longterm maintenance requirements. It is essential to weigh the benefits and drawbacks of each suspension spring type against the budget and maintenance capabilities.
Suspension springs are maintenance-free and their wear is difficult to identify. Steel springs lose their spring rate over time, causing the car to lower its ground clearance slightly and the suspension to become softer. this is not noticeable when driving and does not always have a negative effect on the car's handling. Unlike leaf springs, there is no friction between the coils of coil springs, so the risk of seizing, overheating or chipping is minimal.
The biggest change in suspension performance can only be noticed when a spring fails. Most often the spring breaks, mainly on the initial coils. The main reason for cracks near the seats is advanced corrosion, but they can also occur when the car is overloaded. This risk applies for example to utility cars or cars equipped with a gas system. A heavy fuel tank filled with liquid gas puts a heavy load on the rear axle springs and can accelerate their wear.
Cracks in the suspension springs are very dangerous and can lead to dangerous situations on the road. In such a case, the wheel will lose its spring rate and the control arm will rest on a damaged spring or rubber buffer. This renders further driving impossible. Some cracks, are less serious and, moreover, not so easy to detect. A spring broken at the end coils may remain in its seat and not affect the behaviour of the car too much. Typical symptoms are rattling noises from the suspension when accelerating, braking, cornering or driving over bumps.
How Do Air Suspension Spring Work
Air Suspension Spring are constructed with wide gap coils that work with your struts and shocks to absorb road impact, support your vehicle's weight, and keep all four wheels firmly planted on the road. The tightness with which springs are wound and the stiffness of the suspension springs used can have an impact on a car's handling performance, ride smoothness, and correct ground clearance.
In most vehicles, springs, shocks, and struts work as an inseparable team. The struts support springs and shocks. While working with the springs, they keep your car from bouncing up and down while driving. Coil springs are an important component that gives the car its height and keeps it off the ground. If you remove the struts and springs, your car will be dangerously low to the ground.
Technological Advancements In Air Suspension Spring
The choice of material plays a pivotal role in the performance of suspension springs. Over the years, there has been a shift from traditional steel springs to more advanced materials:
- Composite Materials: These balance strength and weight, ensuring durability without adding unnecessary weight to the vehicle.
- Lightweight Alloys: Aluminium and titanium alloys are increasingly being used, especially in performance vehicles, for their strength-to-weight ratio.
Beyond materials, design innovations have also contributed to improved stability control:
- Progressive Springs: These have a variable rate, becoming stiffer as they're compressed. This ensures a smooth ride during normal conditions and enhanced stability during aggressive maneuvers.
- Adaptive Suspension Systems: Using sensors and electronic controls, these systems adjust the suspension's stiffness based on driving conditions, ensuring optimal performance at all times.
Modern vehicles are a blend of mechanical engineering and electronics. Suspension systems are no exception:
- Electronic Stability Control (ESC): This system detects and reduces the loss of traction, improving vehicle stability.
- Magnetic Ride Control: Using magnetorheological fluid, this system adjusts the suspension's stiffness in real-time, based on driving conditions.
To maintain your Suspension Spring and ensure their optimal performance, you can follow these maintenance tips:
Regular Inspection
Periodically inspect your Suspension Spring for signs of damage, such as cracks, corrosion, or sagging. Look for any abnormalities in their shape or condition. If you notice any issues, it's advisable to have them inspected and replaced if necessary.
Cleanliness
Keep your Suspension Springand the surrounding suspension components clean. Regularly wash away dirt, debris, and road grime that can accumulate and cause premature wear or corrosion. Pay attention to areas where dirt tends to accumulate, such as the coil gaps and spring mounts.
Lubrication
Apply a suitable lubricant to the Suspension Spring, particularly at the contact points with other suspension components. This helps reduce friction, minimise noise, and prevent corrosion. Use a lubricant recommended by the vehicle manufacturer or a specialised suspension lubricant.
Check For Loose Or Worn Components
Inspect the entire suspension system, including mounts, bushings, and connectors, for any loose or worn components. Loose or worn parts can affect the performance of the Suspension Spring and lead to premature failure. Replace or repair any damaged or worn-out components as needed.
Be Mindful Of Load Limits
Avoid overloading your vehicle beyond its recommended weight limits. Excessive weight can put undue stress on the Suspension Spring, leading to accelerated wear and reduced performance. Follow the manufacturer's guidelines for load capacity to maintain the integrity of the springs and the suspension system as a whole.
Regular Suspension Maintenance
Follow the recommended maintenance schedule for your vehicle's suspension system. This may include tasks such as wheel alignment, tire rotation, and balancing, which can indirectly impact the performance and longevity of the Suspension Spring.
Professional Inspection
If you suspect any issues with your Air Suspension Spring or if you notice unusual noises, vibrations, or handling characteristics, have your vehicle inspected by a qualified mechanic or suspension specialist. They can identify any potential problems and recommend appropriate repairs or replacements.
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Our Factory
Zhejiang Bocheng Automotive Technology Co.Ltd was established in 2012, and located in the core area of the Qianjiang New City in Hangzhou, China. Bocheng is a leading enterprise specializing in R&D, production and sales of air suspension systems. Bocheng is committed to providing air suspension solutions for many luxury automotive brands such as Mercedes-Benz, BMW, Audi, Porsche, Bentley, Rolls Royce and Land Rover.
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