A telescopic shock absorber, also known as a telescopic damper or telescopic suspension, is a type of shock absorber commonly used in vehicles, motorcycles, and bicycles to dampen vibrations and impacts caused by uneven road surfaces. It is an essential component of a suspension system, providing a smoother and more comfortable ride while improving the vehicle’s handling and stability.

The design of a telescopic shock absorber consists of multiple nested cylinders that slide within each other, much like a telescope, hence the name “telescopic.” The main components of a telescopic shock absorber include:

Outer Cylinder: This is the outermost tube that houses the entire assembly. It is typically mounted to the vehicle’s chassis or frame.

Inner Cylinder: The inner cylinder is nested inside the outer cylinder and connected to the vehicle’s wheel or suspension system.

Piston: The piston is attached to the end of the inner cylinder and moves up and down inside the outer cylinder. It is equipped with valving mechanisms that regulate the flow of hydraulic fluid.

Hydraulic Fluid: The telescopic shock absorber contains hydraulic fluid (usually oil) that flows through various valves and passages inside the piston.

Valves: There are different types of valves, such as rebound valves and compression valves, that control the flow of hydraulic fluid in response to varying road conditions and vehicle movements.

Working Principle:

When a vehicle encounters an uneven surface or a bump, the wheels move up and down relative to the vehicle’s frame. This movement causes the telescopic shock absorber’s piston to move inside the outer cylinder. The hydraulic fluid flows through the valves and passages, providing resistance to the piston’s movement.

During compression (when the wheel moves upward), the shock absorber’s piston forces hydraulic fluid through the compression valves, creating resistance to the upward movement and absorbing the impact energy. This prevents the vehicle from bouncing excessively after hitting a bump.

During rebound (when the wheel moves downward), the shock absorber’s piston forces hydraulic fluid through the rebound valves, controlling the wheel’s return movement and preventing the suspension from extending too quickly.

The telescopic shock absorber continuously dampens these movements, ensuring that the vehicle’s tires maintain better contact with the road surface. This improves traction, stability, and overall ride comfort.

Telescopic shock absorbers are widely used in various vehicles and are available in different designs and configurations to suit specific applications and performance requirements. Their ability to provide effective damping and control over suspension movements makes them an essential component for a smooth and safe driving experience.

Mech Asked question August 4, 2023