Differential gear, in auto mechanics, gear arrangement that permits power from the engine to be transmitted to a couple of generating 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 road the wheels rotate at the same speed; when turning a part the outside wheel provides farther to move and will turn faster than the inner wheel if unrestrained.

The components of the Ever-Power differential are proven in the Figure. The power from the transmitting is sent to the bevel ring gear by the drive-shaft pinion, both which are held in bearings in the rear-axle housing. The case can be an open boxlike structure that’s bolted to the ring gear and contains bearings to support a couple of pairs of diametrically opposing differential bevel pinions. Each steering wheel axle is mounted on a differential side equipment, which meshes with the differential pinions. On a directly road the wheels and the medial side gears rotate at the same speed, there is no relative motion between the differential part gears and pinions, and they all rotate as a device with the case and ring gear. If the vehicle turns to the left, the right-hand steering wheel will be forced to rotate faster than the left-hand wheel, and the medial side gears and the pinions will rotate relative to one another. The ring gear rotates at a speed that is add up to the mean quickness of the still left and correct wheels. If the tires are jacked up with the transmitting in neutral and among the tires is turned, the opposite wheel will submit the opposite path at the same quickness.

The torque (turning instant) transmitted to both wheels with the Ever-Power differential is the same. 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 coupling China relatively by the usage of a limited-slide differential. In one edition a clutch connects one of the axles and the ring gear. When one wheel encounters low traction, its inclination to spin is definitely resisted by the clutch, hence providing greater torque for the additional wheel.
OPEN DIFFERENTIAL:
A differential in its most basic form comprises two halves of an axle with a gear on each end, connected together by a third equipment making up three sides of a square. This is usually supplemented by a 4th gear for added power, completing the square.