Shock absorber | Types | Working

Hello friends, welcome to all of you, again with another post, do you know what is a shock absorber? And what is its function? If you do not know this, then let us know what is the shock absorber and how it works.

Shock absorber

What is a shock absorber?

So as it seems from its name. This shock absorbs all the shocks from the road. But if seen, then only the road spring really judges the shaking of the road.

As we discussed in the previous post, in comparison, the shock absorber only works on the friction and oscillation of the road spring.

Due to the high and low conditions of the road, the vehicle bounces. The springs fitted at this time also get pressed due to which there is a fear of breaking the spring. And the passengers sitting in the car feel the tremors.

Keeping these types of problems in mind, shock absorbers are often used in vehicles along with road springs. By using shock absorbers, whatever the condition of the road, the vehicle can run straight.

When the car moves on high and low roads. So these shock absorber springs open. And are closed In general terms, shock absorbers are used in vehicles to reduce the shock or tremors of the spring.


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Shock Absorber types


These are mainly of two types


Mechanical Shock Absorber –

Friends, mechanical shock absorbers are used only in motorcycles and scooters. They are no longer used in four-wheeled vehicles. A clutch-facing disc of a mechanical shock absorber rests between two plates. And these two plates are held together by a spring. When road shocks are felt in the car. So the axle is up and down. Whose facing disc prevents jumping? Because this disc is stuck in the middle. And the car moves by making a balance


Hydraulic type –

All shock absorbers of the present day work on the principle of hydraulic pressure. Under this, liquid substances cannot be pressed.

Whatever the type of shock absorber, hydraulic fluid is filled in all of them. this fluid is released by pressing through small holes. And the pressure of the fluid depends on the size of the pores. this pressure exerts its influence on the arm attached to the shock absorber.


There are mainly three types of hydraulic shock absorbers

vane-type shock absorber
piston-type shock absorber
telescopic shock absorber
Vane Type Shock Absorber –

This type of shock absorber has an iron hollow body. Inside which a vane is fitted. And this vane fits on a shaft. A part of this shaft comes out on the other side of the body which is connected to the front axle. Valves are fitted inside the body. And hydraulic oil is filled in them.

These shock absorbers are attached to the chassis. When the axle jumps, it rotates the lever and vane with the joint with it, and the hydraulic oil is pressurized due to the hydraulic oil filling around the vane.

There is only one way for the suppressed oil to go to the other side, high pressure is generated in it and through the high-pressure valve, the oil moves very slowly from the vane, and road shocks are judged.




Piston Type Shock Absorber-

these are two types

Single Acting Type –

In this type of shock absorber, only one piston allows oil to enter the reservoir by opening the valve. When the axles are high due to road shock.

In that case, the piston moves forward due to its attachment to the link and cam. Due to the filling of hydraulic oil in the cylinder of the shock absorber, hydraulic oil pressure is generated due to the forward movement of the piston. There is only one way out. This is called a relief valve. Due to the minuteness of the valve opening, it takes some time for the pressurized hydraulic oil to drain out. The axle rises slowly when hydraulic oil is applied. And when it comes back. When the piston is engaged, the oil from the intake valve is then filled back into the cylinder.


2 Double acting type –

In this type of shock absorber, two pistons are placed face to face inside. And they have a spring-loaded and a side-opening valve as well as a micro-hole. These two pistons move back and forth by means of cams attached to a shaft. The shaft on which the cam is mounted. It is connected to the axle by a lever. The cam rotates due to the axle jump. And the rotation of the cam causes the piston to move out. And there is hydraulic oil as much as the piston. Pressurizes and closes the valve.

And the oil can come back through the hole. It takes time. And road shocks get judged. When the piston one goes .then the other piston also pulls with it. And the valve opens in the chamber of the second piston. And fills hydraulic oil. when the axle is down. So at that time, the cam presses the second piston. When the piston is pressed, its valve is closed. And the hydraulic oil that came back through that small hole

S happens. Due to this the axle slowly rises up and slowly down.


Telescopic Type –

Presently telescopic type shock absorbers are mostly used. They have eye holes at the top and bottom and are attached to the axle and chassis by rubber bushings. When the impact of the bounce of the wheels on the piston rod of the shock absorber through the axle or chassis, the piston comes down. With this, the cylinder tube again enters the cylinder from the valve that opens the cylinder. There are micro holes in both valves, the oil moves very slowly. And the road shock dumbs and pulls on its other side, then the same action happens, in which air suspension and rubber suspension are often prevalent.



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