What defines "hydraulic systems"?

Hydraulic systems are specifically defined by their use of fluid power, typically in the form of liquids like oil or water, to perform work. These systems operate by creating pressure differences within a liquid, allowing for the efficient transfer of energy. When the pressure is applied to the fluid, it can move pistons, lift heavy objects, or operate machinery with great force and precision. This characteristic distinguishes hydraulic systems from those that rely on other forms of energy, such as electrical energy or mechanical energy.

The ability to transmit power through a fluid medium is essential for various applications, from construction machinery to automotive braking systems, making hydraulic systems integral to industries that require robust and effective power transmission.