Automotive Systems

Formerly Automotive Systems I

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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.

Published by SweetHaven Publishing Services
Based upon a text provided by the U.S. Navy

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