This document discusses engine lubrication systems. It describes force-feed lubrication systems, which include filtering systems like full-flow and bypass systems. It also discusses the types of oil pumps used like gear, rotary and crescent pumps. Finally, it covers the classification of engine lubrication oils according to the Society of Automotive Engineers (SAE) and American Petroleum Institute (API) specifications.

1. ENGINE
LUBRICATION
SYSTEM
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2. Friction
• f- Friction
W
R
F
f
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3. Friction
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• Dry friction • Fluid friction• Mixed friction

4. Force feed lubrication
system
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5. Force feed lubrication
system
• Filtering System
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Full Flow System

6. Force feed lubrication
system
• Filtering System
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By Pass System

7. Force feed lubrication system
• Type Of Oil Pumps
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gear pump
rotary pump
crescent pump

8. Lubrication Oil
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9. Engine Lubrication oil
Function
• Lubricate
• Cool
• Seal
• Clean
• Protect Against Corrosion
• Damp Engine Noises
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10. CLASSIFICATION OF
LUBRICATION
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11. CLASSIFICATION OF
LUBRICATION
01 SAE - Society Of Automotive Engineering
Mono Grade Oil
Winter Oil Summer Oil
SAE 5W,10W,15W SAE 40,50
Multi Grade Oil
SAE20W30
SAE20W50
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12. CLASSIFICATION OF
LUBRICATION
2. American Petroleum Institute (API)
Regular Type
Premium Type
Heavy Duty Type
Petrol Engine - SJ, SL, SM, SN
Diesel Engine - CF-2, CF, CG-4, CH-4,
CI-4, CJ-4 plus ,CJ-4
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