PRIN. OF INTERNAL COMBUSTION ENGINES - OD1619 LESSON 2/TASK 2
Describe the principles, components, and operation of the lubrication
Within a selfstudy environment and given the subcourse text, without assistance.
Within one hour
No supplementary references are needed for this task.
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
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.