It is consists of bearings that rotate two axle shafts. #7 Differential Case or HousingĪ differential case is attached with two-wheel axles and differential side gears. Since the axles of the planetary gears rotate around the common axis of the sun and ring gear that coincides and rolls in the middle of the differential system. Planetary gears are used in the differential. Therefore, when the driver rotates the shaft the drive pinion rotates, and thus, the ring gear rotates. The driver shaft is connected to the drive pinion by a universal joint and it engages with a ring gear. It is assembled with a differential housing called a differential case or carrier. The drive pinion is also known as bevel pinion. They act as an equalizer in dividing the torque between the two driving wheels while allowing one to turn faster than the other. The ring gear is also known as a crown wheel. It transfers rotational force from the transmission system to the wheels attached to the axles. #3 Axle Shafts or Half ShaftsĪn axle shaft is a solid shaft that is located between the differential and gear set of an axle housing. There are two pinion gears and their supporting shaft is called the pinion shaft. In this, two bevel gears are fixed together to combine both the driving and driven shafts at 90° angles. It is mounted on the inner ends of each axle. The differential is consists of a small bevel gear called differential side gear or sun gear. Image: Wikipedia #1 Differential Side Gear or Sun Gears Parts of Differentialįollowing are the parts of the differential system: Hence this is essential when the vehicle turns, causing the wheel to move outside the turning curve to roll further and faster than the other. If the axle does not allow the wheels to spin freely, the wheel of the tire will drag on the ground. The inside wheels move in a short distance compared to the outer wheels. The differential allows the steering wheels to turn at different speeds so the car can take turns without putting much pressure on tires. Read Also: 19 Amazing Car Body Styles That You Should Know Why Differential Is Needed? To prevent this from happening, a differential was invented. Vehicles such as chariots, wagons, and carriages still suffer from wheel slipping and dragging, resulting in damage to the wheels, axles, and roads. In 1827, the first conventional automobile differential was invented by a French watchmaker Onésiphore Pecqueur. It takes power from the engine and delivers it, allowing each wheel to rotate at a different speed on turns. The differential is a set of gears, that transfers engine torque to the wheels. But, your vehicle makes turns on corners, whether it’s front, rare, four, or all-wheel-drive.Ī differential is defined as a gear train, which consists of three gears that feature the rotational speed of one shaft is the average speed of the others, or a fixed multiple of that average. This is because it doesn’t have a differential. If you ever played with a toy car, then you know it moves well in a straight line but it doesn’t take a turn.
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