Gearbox Ppt [Repaired]

8/13/2019 Gearbox Ppt [Repaired]

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Differential Gearbox

NAME : PRUTHVIRAJ PATHADEROLL NO.: 302165

T.E.(MECH)


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Introduction While turning, the inner and outer wheels havearcs of different turning radii about InstantaneousCentre.Thus the inner wheels travel less distance than

the outer wheels.As the turning paths of the inner and outer wheels aredifferent, the wheels on both axles need to be able tospin independently of each other.

A differential is used to allow the wheels to spin atdifferent speeds.


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PartsPinion Drive Gear: transfers power fr

om

the driveshaft to the ring gear.

Ring Gear: transfers power to the

Differential case assembly.

Differential case assembly: holds theRing gear and other components that drive the rear axle.Rear drive axles: steel shafts that transfer torque from the differential assembly to the

drive wheels.Rear axle bearings: ball or roller bearings that fit between the axles and the inside of the

axle housing.

Axle housing: metal body that encloses and supports parts of the rear axle assembly.

Side gears: help both wheels

to turn independently when turning.


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WorkingDrive shaft spins the Pinion gear.

Pinion gear turns the larger ringgear to produce gear reduction.

Ring gear is attached to differential case,hence it rotates with the ring gear.

Differential case spins the sun gears which are

attached to the axles.Axles transfer the power to the wheels.


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Different Types ofDifferentialsOpen DifferentialLimited SlipDifferential (LSD)oLocking LSDoTorsen LSD


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The Torsen Differential

The Torsen Differential iscapable of perfect

differentiationThe Torsen Differential

transfers power to the

wheels with tractionTorque transferred to

wheel with traction


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How the Torsen Differential WorksPower is transferred

from the engine to thedifferential housingcausing the housing

to turn.Power flows from the

housing to the wormwheels attached to

the housingThe worm wheels are meshed with theworm gears attached to the axles whichturns the axle with the differential housing


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Differential Function

When turning, the outer wheel turns at a high RPMwith respect to the differential housingTherefore, the outer wheel axle turns its worm gear

and its mating worm wheelThe mating worm wheels are meshed together byspur gears

oPerfect Differentiation: as one wheel increasesspeed the other wheel decreases speedproportionallyoTorque is maintained at both wheels whilecornering


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Application of Torsen Differentials

Torsen differentials are

used in off-road andhigh performance all-wheel drive vehicles.

Torsen differentials can

also be handy on icy ordirt roads.


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Gearbox Ppt [Repaired]

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