The document presents an overview of lubrication, defining it as the application of lubricants to reduce friction and wear in mechanical systems. It details the purpose of lubrication, including wear reduction, cooling, sealing, and cleaning, and explains the forced feed lubrication system, which pumps oil directly to engine parts. Key components such as the oil pump, oil filter, crankcase breather, and relief valve are also described, highlighting their functions in ensuring proper lubrication and maintaining engine conditions.

1. DR. RAJENDRA PRASAD CENTRAL AGRICULTURE UNIVERSITY
Argha Das Bairagya
3rd Semester (2022-26
Batch )
Roll – 2201101059
Dr.(Mrs.) Meera Kumari
Assistant Professor-cum-
Scientist
Department of Agril
Presented
to :-
Presented
by :-

2. Introductio
n
Definition of Lubrication: Lubrication is the process of
applying a lubricant, such as oil or grease, to reduce
friction and wear between moving surfaces in machinery or
mechanical systems.
Purpose of Lubrication:
• Reduce Wear: prevents from wearing out by forming a protective layer between
them.
• Reduce Friction: helps to overcome friction.
• Cooling: Lubrication dissipates heat generated by friction .
• Sealing: Lubrication helps seal gaps between moving parts, preventing
leakage of gases or fluids.
• Cleaning: Lubrication removes dirt, debris, and other contaminants from the
surfaces .

3. Force Feed
system
Definition:
Forced Feed Lubrication: A system where oil is pumped directly to
all moving parts of an engine to ensure proper lubrication.
Operation:
• Oil Pump : Special pump (e.g., gear pump) pushes oil through
the system.
• Path of Oil : Oil travels through specific channels to reach
engine parts.
• Parts Lubricated : Crankshaft, connecting rods, pistons,
camshaft bearings, and timing gears.

4. Working of forced feed lubrication
System

5. Components of Forced feed
lubrication System
Oil Pump:
• Purpose: Pushes oil throughout the engine.
• Explanation: Special pump (e.g., gear pump) driven by
the engine’s camshaft.
Oil Filter:
• Purpose: Removes dirt and particles from the oil.
• Explanation: Prevents contaminants from damaging engine
components.
Crankcase Breather:
• Purpose: Allows hot air to escape from the crankcase.
• Explanation: Prevents pressure buildup, maintaining
optimal engine conditions .
Relief Valve:
• Purpose: Controls oil flow and pressure.
• Explanation: Prevents over-lubrication or oil

6. Components of Forced feed
lubrication System