Differential Gear.

What is Differential Gear?

Differential gear, in an automobile mechanics, is a gear arrangement that allows torque from the engine to be transmitted to the driving wheels, dividing the power equally between the two wheels, however, allowing them to follow methods of various lengths, as once turning a corner or traversing an uneven road. On a straight road, the wheels rotate at a similar speed; once turning a corner the outside wheel has farther to travel and can turn quicker than the inner wheel if unrestrained.

The first automobile differential was invented in 1827 by a French person, On├ęsiphore Pecqueur. it absolutely was used initially on steam-driven vehicles and was a well-known device once internal-combustion engines appeared at the tip of the 19th century.

Differential Gear.
Differential Gear.

The elements of the Pecqueur differential are shown within the Figure. the facility from the transmission is delivered to the bevel ring gear by the drive-shaft pinion, each of that ar control in bearings (not shown) within the rear-axle housing. The case is AN open boxy structure that's fast to the ring gear and contains bearings to support one or 2 pairs of diametrically opposite differential bevel pinions. every wheel axle is connected to a differential aspect gear, that meshes with the differential pinions. On a straight road the wheels and also the side gears rotate at a similar speed, there's no relative motion between the differential aspect gears and opinions, and that they all rotate as a single unit with the differential case and ring gear. If the vehicle turns to the left, the right-hand wheel is going to be forced to rotate quicker than the left-hand wheel, and also the aspect gears and also the pinions can rotate relative to at least one another. The ring gear rotates at a speed that's adequate the mean speed of the left and right wheels. If the wheels are jacked up with the transmission in neutral and one in all the wheels is turned, the other wheel can turn within the other way at a similar speed.

The torsion (turning moment) transmitted to the 2 wheels with the Pecqueur differential is that the same. Consequently, if one wheel slips, as in ice or mud, the torsion to the opposite wheel is reduced. This disadvantage will be overcome somewhat by the utilization of a limited-slip differential. In one version a clutch connects one in all the axles and also the ring gear. once one wheel encounters low traction, its tendency to spin is resisted by the clutch, so providing larger torsion for the opposite wheel.

From this video, you can understand the working of a differential gear:


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