Hydraulic Terms; Hydraulics Hydrodynamics Hydrostatics; Work - Kohler K91 Owner's Manual

The first step in becoming comfortable with
hydraulics is to learn the language. This section
provides descriptions and examples of common
hydraulic terms and components.
We will first define some of the common terms
used when working with hydraulics. Then we
will describe the components which are included
in many of the hydraulic systems you encounter.
The review section at the end of the chapter will
test your knowledge of the terms and
components.
5
Ibs
I O Ibs
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HYDRAULIC TERMS
Hydraulics Hydrodynamics Hydrostatics
Hydraulics refer to applications of liquids in
motion. In all of our uses, liquids refer to oil.
Hydrodynamics refer to hydraulic systems
which primarily use fluid flow to transfer energy.
This includes applications such as a water
wheel or a torque converter.
Hydrostatics refer to hydraulic systems which
primarily use fluid pressure to transfer energy.
This includes applications such as a hydraulic
lift system or fluid powered transmission.
All of our applications involve hydrostatics.
Work
Work is the application of a force through a
distance. For any work to be accomplished,
movement is needed. Work is typically
measured in foot pounds (ft Ibs).
Work Force X Distance
Example: The same amount of work is done if a
5 pound object is moved 10 feet or if a 10 pound
object is moved 5 feet.
Productivity Series
6