DRIVE TRAIN DIFFERENTIALS and DRIVE AXLES 1 DIFFERENTIALS

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DRIVE TRAIN DIFFERENTIALS and DRIVE AXLES 1

DRIVE TRAIN DIFFERENTIALS and DRIVE AXLES 1

DIFFERENTIALS and DRIVE AXLES RWD FWD www. thecartech. com

DIFFERENTIALS and DRIVE AXLES RWD FWD www. thecartech. com

DIFFERENTIALS Importance and Purpose of Differentials • Geared mechanism between drive axles • Final

DIFFERENTIALS Importance and Purpose of Differentials • Geared mechanism between drive axles • Final reduction gears id, i tot = i G. i D • Power transport to drive axles then to driving wheels • In RWD change power flow by 90 degree • FWD • transfer case in AWD 3

www. thecartech. com 4

www. thecartech. com 4

transfer case : split engine power to front and rear wheels www. thecartech. com

transfer case : split engine power to front and rear wheels www. thecartech. com 5

Inter-axle differential in full-time four-wheel drive www. thecartech. com 6

Inter-axle differential in full-time four-wheel drive www. thecartech. com 6

Importance and Purpose of Differentials www. thecartech. com 7

Importance and Purpose of Differentials www. thecartech. com 7

Differential Components www. thecartech. com 8

Differential Components www. thecartech. com 8

Differential Components drive pinion gear ring gear=crown gear. differential side gears differential pinion gears

Differential Components drive pinion gear ring gear=crown gear. differential side gears differential pinion gears • differential case • Bearings • oil seals • • 9

Disassembled Differential Components 10

Disassembled Differential Components 10

Differential with rear axles www. thecartech. com 11

Differential with rear axles www. thecartech. com 11

overhung-mounted pinion gear 2 tapered bearings www. thecartech. com 12

overhung-mounted pinion gear 2 tapered bearings www. thecartech. com 12

Fixation- straddle-mounted pinion 2 tapered bearings+ roller bearing www. thecartech. com 13

Fixation- straddle-mounted pinion 2 tapered bearings+ roller bearing www. thecartech. com 13

Differential Gears Types straight bevel gears spiral bevel gears www. thecartech. com 14

Differential Gears Types straight bevel gears spiral bevel gears www. thecartech. com 14

Differential Gears Types hypoid gears is offset from the gear center, The hypoid gear

Differential Gears Types hypoid gears is offset from the gear center, The hypoid gear is offset from the gear center, www. thecartech. com 15

Rear Axle Housing a-Removable housing or carrier www. thecartech. com 16

Rear Axle Housing a-Removable housing or carrier www. thecartech. com 16

Rear Axle Housing b-integral housing or carrier 17

Rear Axle Housing b-integral housing or carrier 17

Differential Operation Differential Power Flow 18

Differential Operation Differential Power Flow 18

Differential in Different Positions Straight moving www. thecartech. com 19

Differential in Different Positions Straight moving www. thecartech. com 19

Turn Left www. thecartech. com Turn Right 20

Turn Left www. thecartech. com Turn Right 20

Fixed left wheel www. thecartech. com Fixed right wheel 21

Fixed left wheel www. thecartech. com Fixed right wheel 21

LIFTING THE CAR www. thecartech. com 22

LIFTING THE CAR www. thecartech. com 22

Differential Lubrication heavy viscosity oil petroleumbased Synthetic SAE 80 W-90 23

Differential Lubrication heavy viscosity oil petroleumbased Synthetic SAE 80 W-90 23

Equal and unequal -length system www. thecartech. com 24

Equal and unequal -length system www. thecartech. com 24

Front-Wheel Drive Shafts www. thecartech. com 25

Front-Wheel Drive Shafts www. thecartech. com 25

Drive Shafts in Other Drive Methods Drive Shafts in Rear-Drive with Rear-Mounted Engine 26

Drive Shafts in Other Drive Methods Drive Shafts in Rear-Drive with Rear-Mounted Engine 26

A. semi-floating axle B. three-quarter floating axle C. full-floating axle www. thecartech. com 27

A. semi-floating axle B. three-quarter floating axle C. full-floating axle www. thecartech. com 27