Differential gear, in auto mechanics, gear arrangement that allows power from the engine to be transmitted to a set of driving wheels, dividing the force equally Differential Gear between them but permitting them to follow paths of different lengths, as when turning a corner or traversing an uneven street. On a straight street the tires rotate at the same speed; when turning a corner the outside wheel offers farther to move and can turn faster compared to the inner steering wheel if unrestrained.
The elements of the Ever-Power differential are proven in the Figure. The power from the transmission is delivered to the bevel ring equipment by the drive-shaft pinion, both which are kept in bearings in the rear-axle housing. The case can be an open boxlike framework that’s bolted to the ring gear and contains bearings to support a couple of pairs of diametrically reverse differential bevel pinions. Each steering wheel axle is mounted on a differential side gear, which meshes with the differential pinions. On a directly road the tires and the side gears rotate at the same quickness, there is absolutely no relative motion between the 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 wheel will be required to rotate faster than the left-hand wheel, and the side gears and the pinions will rotate relative to each other. The ring gear rotates at a quickness that is equal to the mean quickness of the left and correct wheels. If the wheels are jacked up with the transmission in neutral and one of the wheels is turned, the opposite wheel will submit the opposite path at the same velocity.
The torque (turning instant) transmitted to both wheels with the Ever-Power differential may be the same. Consequently, if one wheel slips, as in ice or mud, the torque to the other steering wheel is reduced. This disadvantage can be overcome relatively by the use of a limited-slip differential. In one version a clutch connects one of the axles and the ring gear. When one wheel encounters low traction, its inclination to spin is certainly resisted by the clutch, hence providing higher torque for the various other wheel.
A differential in its most elementary form comprises two halves of an axle with a gear on each end, connected together by a third gear creating three sides of a sq .. This is normally supplemented by a fourth gear for added strength, completing the square.