PISTON AND
CRANKSH AFT
G R O U P 5
AUTOMOTIVEENGINEERINGTECHNOLOGY
GROUP
MEMBER 5
203303030 203303032 203303034
MOCHAM AD
ROYANUL MUSTOFA
RYDHO PUTRA
PRADANA
MOKHAMM AD
AFIF
REVANZA
DISCUSSION
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Definition of Piston And Crankshaft
Function of Piston And Crankshaft
Piston & Crankshaft Components or Parts
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Piston & Crankshaft Working System
DEFINITION OF PISTON
A piston is a cylindrical component that moves
reciprocally within a cylinder in an internal combustion engine.
Typically sealed within the cylinder and connected to a connecting rod, the piston plays a crucial role in the engine's operation by
facilitating the conversion of high-pressure gases generated during the combustion of fuel and air into mechanical motion.
The reciprocating motion of the piston is a fundamental part of the engine's four-stroke cycle, contributing to the overall
process of converting chemical energy into mechanical energy to propel the vehicle.
The main function or work of the piston is to transfer energy by receiving the impulse that is being
generated from the gas inside the cylinder and transfer the energy from the connecting rod to the crankshaft.
Another function is due to the combustion of the
mixture of gas which is generating the heat, the piston works to dissipate that heat in the engine cylinder valve.
FUNCTIO N OF
PISTON
PISTON
COMPONENTS OR PARTS
Following are the main parts of piston :
1. Piston Rings
2. Piston Head or Crown 3. Piston Ring Grooves 4. Piston Skirt
5. Piston Pin
6. Connecting Rod Shaft 7. Connecting Rod Bolts 8. Bearings
9. Connecting Rod Cap
PISTON
WORKING SYSTEM
The working system of a piston in an internal combustion engine is integral to the engine's operation. The piston undergoes a series of
movements within the engine cylinder, contributing to the four-stroke cycle that converts fuel and air
into mechanical energy. This sequence of events, known as the four-stroke cycle (intake,
compression, power, exhaust), is repeated
continuously as long as the engine is running. The reciprocating motion of the piston is converted into rotary motion by the crankshaft through the
connecting rod. The rotational motion is then transmitted to the transmission system and ultimately to the wheels of the vehicle.
DEFINITION OF
CRANKSHA FT
Crankshaft is a part of the
engine that helps you convert the linear motion of the Piston into rotary motion that can be delivered to the
gearbox/wheels. Without the crankshaft you can't transfer the reciprocating motion of pistons to the drive shaft. It's also the connecting link
between the engine and the gearbox/drive shaft. Power is delivered from the crankshaft to the wheels/gearbox.
The main function of crank shaft is conversion of
reciprocating motion into rotary motion. The piston reciprocates due to heat developed inside the
engine, this motion is turned into rotary by crank shaft, it transmit the power
developed in the engine that is indicated power to the flywheel, the flywheel
serves as a energy reservoir.
The primary function of a crankshaft is to transfer motion from the piston by means of connecting rod to the transmission system.
FUNCTION OF
CRANKSHA
FT
CRANKSHAFT
COMPONENTS OR PARTS
Following are the main parts of crankshaft :
1. Crank Pin
2. Main Journals 3. Crank Web
4. Counterweights 5. Thrust Washers 6. Oil Seals
7. Flywheel Mounting Flange
CRANKSHAFT WORKING
SYSTEM
In engines used in cars the reciprocating motion of pistons is converted to rotational motion by the
crankshaft which eventually rotates the wheel.
Crankshaft converts reciprocating motion to
rotational motion. It is how you get your vehicle to move.
Due to combustion of fuel in the cylinder, energy is generated and due to this the piston moves
downwards during the power stroke. This
reciprocating motion of the piston is converted to rotary motion of the crank. With this crank,
crankshaft also rotates. This crankshaft is then connected to the gearbox of a vehicle. Thus it is responsible for transmission of power.
CONCLUSION
The conclusion in this paper is that the :
• The piston of a car is a vital component that plays a significant role in the
engine’s functioning. The main function or work of the piston is to transfer
energy by receiving the impulse that is being generated from the gas inside the cylinder and transfer the energy from the connecting rod to the
crankshaft.
• A balanced crankshaft can provide you a smooth-running, more power, less waste of energy, and reduces the vibrations of the engine. It is mainly employed to convert the linear motion to the rotational motion.
THANK YOU
H I M A T E R O !O N LY T H E B R A V E
