PURPOSES OF LUBRICATION
The functions
of an engine lubrication system are as follows:
- Reduces
friction and wear between moving parts (fig. 6-18).
- Helps
transfer heat and cool engine parts.
- Cleans
the inside of the engine by removing contaminants (metal, dirt, plastic, rubber, and other
particles) (fig. 6-19).
- Absorbs
shocks between moving parts to quiet engine operation and increase engine life.
The properties
of engine oil and the design of modern engines allow the lubrication system to accomplish
these functions. |
Figure 6-18.—How oil lubricates.
Figure 6-19.—Sources
of oil contamination. |
