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CHAPTER 13Lubricants and Lubricating Systems

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  Chapter 13, Pages 293-316 (doi:10.13031/2013.24133) in Chapter 13 in Engine and Tractor Power, 4th edition. St. Joseph, Michigan: ASAE. . Copyright 2015 American Society of Agricultural and Biological Engineers, St. Joseph, Mich.
Authors:   Carroll E. Goering and Alan C. Hansen
Keywords:   Theory of Lubrication, Types of Lubricating Oils, Lubrication with Grease, Viscosity of Motor Oils, Oil Additives, Service Classification for Motor Oils, Engine Lubrication Systems, Oil Coolers, Lubrication of Power Transmission Systems, Maintenance of Lubricating Systems, Synthetic and Low-Friction Motor Oils

The engine and power transmission systems in vehicles contain dozens of moving parts. Without proper lubrication, excessive friction would consume much of the engine power and the moving parts would wear at a rapid rate. In addition to reducing friction, a lubricant acts as a cushioning agent between the mating parts and can transport heat away from bearings. Lubricating oil serves as an effective seal to reduce the blowby of combustion gases past piston rings. Finally, lubricating oil acts as a cleansing agent inside an engine. Thus, lubrication is a vital part of engines and tractors.

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