Pistons design

PRESENTATIONON

DESIGN OF PISTONS

Prepaded by :Mehul Gohel (110503119010)Chirag Patel (110503119006)

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PISTON DESIGN CONSIDERATIONS

Pistons must:Contain cylinder pressureTransmit the pressure created by combustion to force

on the connecting rodProvide a place for oil control and compression rings

to be located

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PISTON DESIGN CONSIDERATIONS

Pistons must:Be rigid enough to not deform under the tremendous

pressures and forces encounteredBe ductile enough to absorb pressure peaks and not

shatterRetain the proper shape under the extreme

temperatures encountered

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PISTON CONSTRUCTION

MaterialsCast iron (used in very old engines)Cast aluminum (most common)Forged aluminumHypereutectic alloys (high silicon content aluminum)Carbon Graphite (being tested)

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PISTON CONSTRUCTION

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PISTON CONSTRUCTION

Piston design Piston rings Barrel of piston Piston skirt Piston pin

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PISTON DESIGN

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DESIGN OF PISTON

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PISTON RINGS

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BARREL OF PISTON

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MAJOR/MINOR THRUST

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PISTON SKIRT

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PISTON PIN

Piston Pin OffsetThe piston pin is offset towards the major thrust side

of the piston to reduce piston wear, and piston noiseThe major thrust side is the side that is loaded during

the power eventThe minor thrust side is the side loaded during the

compression event

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PISTON PIN

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PISTON PIN

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