Fluid Power And Hydraulics
Modern industrial equipment makes use of many FLUID POWER SYSTEMS. These are systems that transmit force through a fluid to perform work. The FLUID can be either a LIQUID, such as oil or water, or a Gas, such as compressed air. nitrogen, or carbon dioxide. A fluid power system that use gas as the transmitting force is called a PNEUMATIC SYSTEM. A system that uses liquid as the transmitting force is called a HYDRAULIC SYSTEM. The word hydraulic is derived from the Greek words "hydro" (meaning water) and "aulis" (which mean pipe). Originally, hydraulic referred only to the flow of water in pipes. Today it includes the flow of any liquid in a system.
Some common examples of hydraulic system include automobile braking systems, power steering, hydraulic elevators, and hydraulic lifts in gasoline stations. Many hydraulic systems are also used on dump trucks, road grader, earth moving and excavating equipment.
Industrial plants also have many types hydraulic systems. Hydraulic power is particularly suitable for the operation of jacks, lifts, hoists, presses, riveting machines, torque converters, table and tool feeding mechanisms, and testing equipment. Although all of these examples of hydraulic systems are different, they all operate using the same basic principles. Before proceeding with hydraulic systems and their components, let's review some laws of force and motion, their relationship with hydraulic principles, and how they are utilized.
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