Differential gear, in automotive mechanics, gear arrangement that allows power from the engine to be transmitted to a couple of traveling wheels, dividing the force equally between them but permitting them to check out paths of different lengths, as when turning a corner or traversing an uneven road. On a straight street the tires rotate at the same swiftness; when turning a corner the outside wheel offers farther to go and will turn faster compared to the inner steering wheel if unrestrained.

The elements of the Ever-Power differential are proven in the Figure. The energy from the tranny is delivered to the bevel band equipment by the drive-shaft pinion, both which are held in coupling China bearings in the rear-axle housing. The case is an open boxlike framework that is bolted to the ring gear and contains bearings to support one or two pairs of diametrically opposing differential bevel pinions. Each steering wheel axle is attached to a differential side gear, which meshes with the differential pinions. On a straight road the tires and the medial side gears rotate at the same velocity, there is no relative motion between your differential side gears and pinions, and they all rotate as a device with the case and ring gear. If the automobile turns to the left, the right-hand wheel will be forced to rotate faster than the left-hand steering wheel, and the medial side gears and the pinions will rotate in accordance with one another. The ring equipment rotates at a swiftness that is equal to the mean speed of the left and right wheels. If the wheels are jacked up with the transmitting in neutral and among the wheels is turned, the contrary wheel will turn in the opposite direction at the same quickness.

The torque (turning minute) transmitted to the two wheels with the Ever-Power differential may be the same. As a result, 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-slide differential. In one version a clutch connects one of the axles and the band gear. When one wheel encounters low traction, its inclination to spin is definitely resisted by the clutch, hence providing better torque for the other wheel.
OPEN DIFFERENTIAL:
A differential in its most elementary form comprises two halves of an axle with a gear on each end, linked jointly by a third gear making up three sides of a sq .. This is usually supplemented by a 4th gear for added strength, completing the square.