Lesson 2. Function And Construction Of Diesel Fuel Systems

Principles of Gasoline And Disesel Fuel Systems
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TASK 1.

Describe the characteristics of diesel fuel.

CONDITIONS

Within a selfstudy environment and given the subcourse text, without

assistance.

STANDARDS

Within one hour

REFERENCES

No supplementary references are needed for this task.

Introduction

The fuels used in modern highspeed 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, highspeed 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.