engine
Post on 10-Sep-2014
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DESCRIPTION
TRANSCRIPT
AHMAD ABDULLAH BIN HAJI JALBAH
MAKTAB KEJURUTERAAN JEFRI BOLKIAH
TWO-STROKE ENGINE AND FOUR-STROKE
ENGINE
CONTENTS INTRODUCTION
TWO-STROKE
FOUR-STROKE
ADVANTAGES
DISADVANTAGES
CONCLUSION
INTRODUCTION
What is two-stroke engine?internal combustion engine that completes the process
cycle in one revolution of the crankshaft.
What is four-stroke engine?known as four-cycleInternal combustion engine in which
the piston completes four separate strokes cycle
TWO-STROKE
PARTS
Combustion chamber
Exhaust outlet
Crankcase
Spark plug
Piston
Reed valve
Fuel intake
Fuel
OPERATION
FOUR-STROKE
PARTS
Exhaust port
Connecting rod
Crankshaft
Crankcase
Piston
Cooling fins
Exhaust valve
Spark plug
Intake valve
Intake port
OPERATION
ADVANTAGES
Do not have valves, simplifying their construction.
Fire once every revolution.Lighter, and cost less to manufacture. Potential for about twice the power in the same size
DISADVANTAGES
Don't live as longOil can be expensive.Produce more pollution. Do not use fuel efficiently, yielding fewer miles per gallon.
CONCLUSION
Which one do you prefer?