What is Hydraulic System? What is the Purpose of the Hydraulic System? What are the Basic Principles of Hydraulic System?

What is Hydraulic System? What is the Purpose of the Hydraulic System? What are the Basic Principles of Hydraulic System?

What is Hydraulic System? What is the Purpose of the Hydraulic System? What are the Basic Principles of Hydraulic System?

What is Hydraulic?

The word hydraulic comes from the Greek word ὑδϱαυλικός (ydravlikós). This word also comes from the root words water and pipe. Hydraulics is a branch of engineering that studies the mechanical properties of fluids. It is about the useful discipline of fluid power.

When Was the First Hydraulic System Used?

Archimedes (285-212 BC) experimented with water power.

Heron of Alexandria (100 BC) used air and water to open and close the temple doors.

What Are Hydraulic Systems Used For?

Hydraulic systems are mainly used where a high power density is required or there are quickly load requirements. This is especially true for all types of mobile equipment such as excavators and industrial systems such as presses.

So heavy loads

To pick up

To pull

Push

compress

It is used to rotate.

Basic Principles on which Hydraulic Systems are Based?

Liquids Are Incompressible

Pascal's Law: pressure in a closed vessel is the same everywhere

Force Transmission

Pressure transfer

Flow Law

Simple Hydraulic Circuits

Schematic Illustration

Hydraulic Power transmission is by fluid.

Fluid = Hydraulic Oil

The cross-sections through which the Hydraulic Oil passes are very narrow. If the oil is dirty, these sections become clogged and the system becomes inoperable.