
Discover fundamentals of lubrication systems as the instructor shares hands-on automotive engineering experience in design, development, testing, emission control, and thermal optimization gained with Mitsubishi, Cummins, and Caterpillar.
Examine how the lubrication system minimizes friction, seals with an oil film, cools parts, neutralizes acids and sludge, and uses oil pan, dipstick, external gear and gerotor pumps, and regulator.
Explore the main lube oil filtration components, including full-flow, bypass, and centrifugal filters, plus absorbent media. Learn how media and micron ratings remove contaminants with minimal flow restriction.
Examine lube oil coolers—bundle-type tube exchangers and plate-type designs—and their role in maintaining oil temperature and viscosity, with piston oil cooling nozzles.
Describe the basic lubrication system, from oil intake through the strainer, pump, and filter to the main gallery, bearings and camshafts, with crankcase ventilation.
Explain how viscosity and viscosity index change with temperature. Note properties like flash point, fire point, pour point, and how detergents, dispersants, and inhibitors protect oil.
Explore lube oil designations, viscosity concepts including the winter and 100-degree-centigrade references, and the role of EPA and API in lubrication classifications.
Basic Functions of lubrication system-Six main functions of Lubrication subsystems
Basic components of lubrication system-Basic components of the lubrication systems
Types of lubrication in IC engines-Pressure lubrication , Splash lubrication
Properties of Lube oils-Flash point, pour point, viscosity, Viscosity index,
Oil pressure signal in Engines
Lube oil terminology-grades of lubrication , How to judge the grades of lube oil and climatic conditions in which the oil must be used
Calibrate lube oil dipstick-When replacing a missing or defective dipstick, replace the engine oil and filters, installing the exact OEM specified quantity. Run the engine for a couple of minutes then shut down and leave for 10 minutes. Dip the oil sump with the new dipstick and scribe the high level graduation with an electric pencil. Measure the distance from the high-level to low-level graduations on the old dipstick and then duplicate on the replacement.
Calibrate lube oil dipstick-When replacing a missing or defective dipstick, replace the engine oil and filters, installing the exact OEM specified quantity. Run the engine for a couple of minutes then shut down and leave for 10 minutes. Dip the oil sump with the new dipstick and scribe the high level graduation with an electric pencil. Measure the distance from the high-level to low-level graduations on the old dipstick and then duplicate on the replacement.
Lubrication system-Fault diagnosis