4 stroke engine
Post on 07-Nov-2014
51 Views
Preview:
DESCRIPTION
TRANSCRIPT
ByAjoy Infant Raj. A32810114002
Engine
An engine is motor which converts chemical energy into mechanical energy
History
• Otto Cycle: Dr. Nicolaus Otto -1876
History
Nicolaus August Otto in 1876 developed the “Otto cycle engine”.German mechanical engineer Karl Benz in 1885, designed and built the world's first practical automobile to be powered by an internal-combustion engine.
• Diesel Engine; Dr. Rudolph Diesel -1895
History
What is a Four Stroke Engine????
Working principle of four Stroke Engine
Following are the four strokes
1 – Intake/Suction stroke
2 – Compression stroke
3 – Expansion stroke
4 – Exhaust stroke
1 – Intake stroke
2 – Compression stroke
3 – Expansion stroke
4 – Exhaust stroke
Parts of an engine
Various Parts of Engine
• Crankshaft• Crankcase• Crank Pin• Camshaft• Spark plug• Fuel pump
• Cylinder Block• Cylinder Head• Inlet valve & Exhaust valve• Piston• Piston Rings• Connecting Rod• Gudgeon Pin
Cylinder Block
Cylinder Head
Inlet valve & Exhaust valve
Piston
Piston Rings
Connecting Rod & Gudgeon Pin
Crankshaft
Camshaft
Spark Plug
Fuel Injector
Difference between4-Stroke Engine & 2-Stroke Engine
• One cycle completed in every 2 revolution of crankshaft
• More moving parts• More maintenance• Heavy in weight• More expensive
• One cycle completed in every revolution of crankshaft
• Less moving parts• Less maintenance• Light in weight• Less expensive
4-Stroke Engine 2-Stroke Engine
Difference between4-Stroke Engine & 2-Stroke Engine
• Produce more pollution
• Long engine life• Not required
• Complex design
• Less pollution
• Short engine life• Required a mix of oil
to lubricate the crankshaft
• Simpler design
4-Stroke Engine 2-Stroke Engine
top related