PRINCIPLES GASOLINE/DIESEL FUEL SYSTEMS - OD1620 - LESSON 2/TASK 1
LESSON 2
FUNCTION AND CONSTRUCTION OF DIESEL FUEL SYSTEMS
TASK 1.
Describe the characteristics of diesel fuel.
CONDITIONS
Within a self-study
environment
and
given
the
subcourse
text,
without
assistance.
STANDARDS
Within one hour
REFERENCES
No supplementary references are needed for this task.
1.
Introduction
The fuels used in modern high-speed diesel engines are derived from the
heavier residues of the crude oil left over after the more volatile fuels,
such as gasoline and kerosene, are removed during the refining process. The
large, slow running diesel engines used in stationary or marine
installations will burn almost any grade of heavy fuel oil. This contrasts
with the smaller, high-speed diesel engines that require a fuel oil that is
as light as kerosene.
Although diesel fuels are considered a residue of the refining process,
their specification requirements are just as exacting as gasoline. In this
lesson, the function and construction of diesel fuel systems will be
discussed. The first task will describe the characteristics of diesel fuel;
the second task will portray the principles, construction, and function of
diesel fuel systems used in vehicles.
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