The following four types of springs are used in automotive suspension system.
- Coil spring:
- Leaf spring:
- Air spring:
- Torsion bar:
Coil types of springs:
Coil spring is made of a length of round spring steel rod, Which has been wound into a coil. It is used both in front and near suspension systems.
Leaf types of springs:
Leaf springs also called as semi epic-al spring. There are two types of leaf springs
- Single-leaf spring.
- Multi-leaf spring.
Multi-leaf spring is made of a series of flat steel plates. These plates are of define length. These plates are placed one above the other. The plates or leaves are held together at the centre by a spring centre bolt, which passes through holes in the leaves. The leaves are clamped at different intervals of length along the spring with clips, which are called bound clips. The longest leaf is called master spring leaf. It is rolled at both ends to from eyes for attaching the spring to the frame. The volts are placed through spring eyes. Ends of second leaf are also rolled partway round the spring eyes to strengthen the master leaf.
Air spring types of springs:
Air spring is typically a two-ply rubber cylinder filled with air. On both ends two caps are made for installing. When the air is filled in, it gives a spring action like a coil spring, but it is lighter than a coil spring. It gives smoother ride.
Torsion bar types of springs:
It is another type of spring. Torsion bar is made of a large spring steel rod. One end of the Torsion bar: is attached to the frame and the other to the suspension system control arm,
Torsion bar is twisted when the suspension system moves up and down but it will try to flex back into its original shape. Therefore , the suspension arm comes back to its original place. The other end of the shock fastens to the frame, ON this way, the shock rod is pulled in and out to resist the movement.