After the engine of a vehicle it is the suspension system that holds prime importance because it is the harbinger of a comfortable ride. The suspension system minimizes the impact of a particular road condition providing a safe drive to the occupants of the vehicle. This might sound pretty simple but when you come to think of it seriously it is not as simple as it might seem to be. When acceleration comes into force and force translates into raw energy this energy travels through the frame of the vehicle .without coils and springs to absorb this the vertical energy would cause the vehicle to jump up off the road reducing tire friction and control which would result in a heavy bounce back downwards by the car with even greater force which could be very dangerous. Coil spring and leaf springs to absorb all forces and to keep the tires firmly planted to the ground so that the tire always remains in contact with the ground
The term suspension is given to the springs, shock absorbers and linkages that connect a vehicle to its wheels. The suspension system mainly serves the purpose of providing safety to the car by minimizing jerks and provides comfort to the occupants of the vehicle.
Principle of Suspension System
To restrict road vibrations from being transmitted to the various components of the vehicle
To protect the passengers from road shocks
To maintain the stability of the vehicle in pitching and rolling
Components of the Suspension System
Control Arm Bushing: (4) This is a sleeve which allows the control arm to move up and down on the frame.
Strut Rod: Prevents the control arm from swinging forward and backwards.
Shock absorbers or Struts:
Spring: Supports the weight of the vehicle
Common problems of the suspension system
Shocks and Struts: Shocks and Struts are located behind the wheels of a vehicle. Shocks and Struts are subject to wear and tear just like other vehicle parts. The signs of a shock wear out are if the car bounces excessively, leans hard in corners and jerks at brakes then the shocks and struts are definitely calling for a change.
Ball joints: The wearing out of ball joints can get dangerous because if they separate they cause you to lose control over the vehicle which could also be a life risk.
The shocks and struts should be check frequently for leakages
Ball joints should be checked immediately incase the motion of the car is not right.
Make sure to lubricate the ball joints of your car frequently.