Introduction.

• Suspension is the term given to the system of springs,shock absorbers and linkages that connects a vehicle to its wheels.
• Serve a dual purpose-contributing to the car,s handling and braking.
• Protects the vehicle it self and any cargo or luggage from damage and wear.

               

Suspension system layout.

Different suspension system :

1. Conventional suspension system.
2. Independent/dependent suspension system.
3. Air suspension system.
4. Hydro elastic suspension system.

According to William H.( n.d.), state that purpose of  suspension is:

-Make the major  friction between the tire and road surfaces.

-Good control of driving influence steering stability.

-Comfort of his passengers feel secure when in the car.

Two perspective affect automobile engineers take into account the vehicle dynamics:

Ride – ability car to smooth out a bumpy road.

Handling – ability vehicle to secure accelerate, brake and corner.( William H.( n.d.).

Suspension Types: Front.

Dependent Front Suspensions .

The front wheel on the front axle depending on the font suspensions.solid dependent bar under the front of car, place on leaf springs and shock absorbers.In the truck, not used for years in the dependent front suspensions ( William H.( n.d.).

Independent Front Suspensions .

Can move freely is an advantage for the front wheel in this setup. The MacPherson strut, developed by Earle S. MacPherson of General Motors in 1947, is the most widely used front suspension system. The double-wishbone suspension, also known as an A-arm suspension, is another common type of front independent suspension ( William H.( n.d.).

Suspension Types: Rear.

Dependent Rear Suspensions .

Suspension will be easier if  double solid rear wheels in relation to car.Drive axle leaf spring in the former design, the leaf springs clamp d­irectly to the drive axle. The ends of the leaf springs attach directly to the frame, and the shock absorber is attached at the clamp that holds the spring to the axle ( William H.( n.d.).

Independent Rear Suspensions.

If both the front and back suspensions are independent, then all of the wheels are mounted and sprung individually, resulting in what car advertisements tout as "four-wheel independent suspension." Any suspension that can be used on the front of the car can be used on the rear, and versions of the front independent systems described in the previous section can be found on the rear axles. Of course, in the rear of the car, the steering rack the assembly that includes the pinion gear wheel and enables the wheels to turn from side to side  is absent. This means that rear independent suspensions can be simplified versions of front ones, although the basic principles remain the same ( William H.( n.d.).