A differential is a gear train with three drive shafts that has the property that the rotational speed of one shaft is the average of the speeds of the others. A common use of differentials is in moto
Differential unit for a rear-wheel drive car, built by ZF c. 2004
Differential gears (in yellow) in a punched tape reader, built by Tally c. 1962
Illustration of a ring-and-pinion differential for a rear-wheel drive vehicle
Schematic diagram of a ring-and pinion differential
Torsen
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Torsen Torque-Sensing is a type of differential used in automobiles.
Torsen differential from an Audi quattro
