Differential Gear

Differential gear, in automotive mechanics, gear arrangement that permits power from the engine to be transmitted to a set of driving 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 street. On a straight road the wheels rotate at the same speed; when turning a part the outside wheel coupling China provides farther to move and can turn faster compared to the inner steering wheel if unrestrained.

The components of the Ever-Power differential are shown in the Figure. The energy from the transmission is delivered to the bevel ring gear by the drive-shaft pinion, both which are held in bearings in the rear-axle casing. The case can be an open boxlike structure that is bolted to the band gear and contains bearings to support one or two pairs of diametrically reverse 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 side gears rotate at the same swiftness, there is no relative motion between the differential aspect gears and pinions, and they all rotate as a unit with the case and ring gear. If the automobile turns to the left, the right-hand wheel will be forced to rotate faster compared to the left-hand steering wheel, and the medial side gears and the pinions will rotate relative to each other. The ring equipment rotates at a quickness that is equal to the mean speed of the remaining and correct wheels. If the tires are jacked up with the transmission in neutral and one of the wheels is turned, the contrary wheel will turn in the opposite direction at the same swiftness.

The torque (turning instant) transmitted to both wheels with the Ever-Power differential may be the same. Therefore, if one steering wheel slips, as in ice or mud, the torque to the other steering wheel is decreased. This disadvantage can be overcome relatively by the usage of a limited-slide differential. In one version a clutch connects among the axles and the band gear. When one steering wheel encounters low traction, its inclination to spin is resisted by the clutch, hence providing higher torque for the other wheel.
A differential in its most elementary form comprises two halves of an axle with a equipment on each end, connected jointly by a third equipment making up three sides of a square. This is normally supplemented by a 4th gear for added power, completing the square.


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