Differential Gear

Differential gear, in automotive mechanics, gear arrangement that allows power from the engine to be transmitted to a set 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 tires rotate at the same velocity; when turning a part the outside wheel has farther to go and will turn faster than the inner steering wheel if unrestrained.

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

The torque (turning second) transmitted to both wheels with the Ever-Power differential is the same. Therefore, if one wheel slips, as in ice or mud, the torque to the other steering wheel is reduced. This disadvantage could be overcome somewhat by the use of a limited-slide differential. In one edition a clutch connects among the axles and the band gear. When one wheel encounters low traction, its tendency to spin can be resisted by the clutch, hence providing better torque for the other wheel.
A differential in its most basic form comprises two halves of an axle with a gear on each end, linked jointly by a third equipment creating three sides of a square. This is usually supplemented by a fourth gear for added power, completing the square.