The suspension system connects the wheels to the vehicle's frame or body using mechanical linkages, springs, and dampers. It controls vehicle handling, braking, and keeps passengers comfortable by absorbing bumps and vibrations. The key components are springs to absorb shocks, dampers to limit spring oscillation and improve comfort, stabilizer bars to prevent swaying, and linkages to connect other components and control wheel movement. A knuckle connects each wheel to the suspension and provides steering movement, while shock absorbers are placed between linkages and the frame to absorb road shocks before transmitting to the vehicle frame.

1. SUSPENSION
SYSTEM
ELEMENTS OF MECHANICAL ENGINEERING
2022 July 20
PES COLLEGE OF ENGINEERING , MANDYA
Presented by
khizra fathima usn: 4Ps21CS041

2. The suspension system of a vehicle refers to the group
of mechanical components that connect the wheels to
the frame or the body.
A system of mechanical linkages, springs, dampers that
is used to connect wheels to the chassis is known as a
suspension system.
It controls the vehicle's handling and braking for safety
and keeping the passengers comfortable from bumps,
vibrations, etc.
What is suspension system?

3. Purpose of suspension system
It helps to maintain correct vehicle height
and wheel alignment.
It protects vehicle and luggage from
damage and wear.
To provide good ride and handling
performance.
To ensure that steering control is
maintained during maneuvering.
To ensure that the vehicle responds
favourably to control forces produced by
the tires.
To prevent isolation from high frequency
vibration from tire excitation.

4. Springs, which neutralises the shocks from the road
surface ( Energy storage).
Dampers, which act to improve comfort by limiting
the free oscillation of the springs. (Energy
Dissipation)
Stabiliser (sway bar or anti-roll bar), which prevents
lateral swaying of the car.
A linkage system, which acts to hold the above
components in place and to control the
longitudinal and lateral movements of the wheels.
Components of suspension system

6. Knuckle or Upright
It is the component of the suspension system that is
mounted over the wheel's hub through which the
wheels and the suspension of the vehicle connect with
each other by the linkages provided.
A knuckle is provided with the king-pin and the caster
angles that help the front wheels of the vehicle to
steer in right or left direction which in turn steers the
vehicle.
A knuckle provides housing for central bearing over
which the wheel's hub rotates along with the rotation
of the wheels.

7. Linkages
Linkages are the rigid connections that are
used in a suspension system to connect the
main frame of the vehicle with the knuckle of
the wheels through mechanical fasteners.
Shock absorbers or springs
They are the flexible mechanical components that are used to absorb shock
provided by the road condition and is placed between the linkages (wishbone,
solid axle, multi-links) and the main frame such that the road shock is
minimised before transmitting to the main frame of a vehicle

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