PRIN. OF INTERNAL COMBUSTION ENGINES - OD1619 LESSON 2/TASK 2
LESSON 2
INTERNAL COMBUSTION ENGINE SUBSYSTEMS
TASK 2.
Describe the principles, components, and operation of the lubrication
system.
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 lubrication system (figure 48 on the following page) in an automotive engine
supplies a constant supply of oil to all moving parts.
This constant supply of
fresh oil is important to minimize wear, flush bearing surfaces clean, and remove
the localized heat that develops between moving parts as a result of friction. In
addition, the oil that is supplied to the cylinder walls helps the piston rings
make a good seal to reduce blowby.
This task will describe the characteristics,
components,
and
function
of
an
internal combustion engine lubrication system.
2.
Purpose of Lubrication
a. Oil
as a Lubricant. The primary function of engine oil is to reduce friction
between
moving parts (lubricate).
Friction, in addition to wasting engine power,
creates
destructive heat and rapid wear of parts. The greater the friction present
between
moving parts, the greater the energy required to overcome that friction.
The
58
Previous Page
