Differential gear, in automotive mechanics, gear arrangement that allows power from the engine to be transmitted to a couple of driving wheels, dividing the force equally between them but permitting them to follow paths of different lengths, as when turning a corner or traversing an uneven street. On a straight road the wheels rotate at the same rate; when turning a corner the outside wheel provides farther to move and can turn faster compared to the inner wheel if unrestrained.
The components of the Ever-Power differential are demonstrated in the Figure. The energy from the transmitting is delivered to the bevel ring gear by the drive-shaft pinion, both of which are kept in bearings in the rear-axle casing. The case can be an open boxlike structure that is bolted to the ring gear and contains bearings to support one or two pairs of diametrically opposite differential bevel pinions. Each wheel axle is mounted on a differential side equipment, which meshes with the differential pinions. On a straight road the tires and the medial side gears rotate at the same velocity, there is absolutely no relative motion between your differential side gears and pinions, plus they all rotate as a unit with the case and band gear. If the automobile turns to the left, the right-hand steering wheel will be forced to rotate faster than the left-hand wheel, and the side gears and the pinions will rotate in accordance with one another. The ring equipment rotates at a acceleration that is equal to the mean swiftness of the left and right wheels. If the tires are jacked up with the tranny in neutral and among the wheels is turned, the opposite wheel will submit the opposite path at the same velocity.
The torque (turning instant) transmitted to the two wheels with the Ever-Power differential may be the same. Differential Gear Therefore, if one steering wheel slips, as in ice or mud, the torque to the other steering wheel is reduced. This disadvantage could be overcome relatively by the use of a limited-slip differential. In one edition a clutch connects among the axles and the band gear. When one steering wheel encounters low traction, its tendency to spin is certainly resisted by the clutch, thus providing higher torque for the additional wheel.
A differential in its most basic form comprises two halves of an axle with a equipment on each end, linked with each other by a third equipment creating three sides of a square. This is generally supplemented by a 4th gear for added strength, completing the square.