What is a differential and what does a differential do?

The power of the automobile engine is transmitted to the drive axle through the clutch, transmission, transmission shaft, and finally to the drive axle and then distributed to the half-shaft drive wheels left and right, in this power transmission path, the drive axle is the last assembly, and its main components are the reducer and differential. The function of the reducer is to reduce the reduction and increase the torque, and this function is completely completed by the meshing between the gears and gears, which is relatively easy to understand. And the differential is more difficult to understand, what is a differential, why "differential"?

The car differential is the main part that drives the car. Its function is to transmit power to both side half shafts at the same time, allow the two side half shafts to rotate at different speeds, meet the two sides of the wheel as far as possible in the form of pure rolling for unequal distance driving, reduce the friction between the tire and the ground.

What is the function of a differential? Star Awareness Project

The differential is the main component of the automobile drive axle, and its function is to transmit power to the two half shafts, and at the same time allow the two half shafts to rotate at different speeds, so as to meet the requirements of unequal distance driving of the wheels on both sides in the form of pure rolling as much as possible, and reduce the friction between the tires and the ground. There are four main types of differentials, namely ordinary differentials, multi-plate clutches, differentials, tosen differentials and viscous couplings. Pufang Sentong ** differential is a kind of ordinary symmetrical bevel gear structure of the differential, which can work normally when the car turns, and its planetary gear set is not installed with any locking device.

Multi-plate clutch differentials rely on wet multi-plate clutches to generate differential torque; The core of the Torsen differential is the worm gear drive system; A viscous coupling differential, a smart device that automatically distributes power on an all-wheel drive vehicle.

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The function of the differential is as follows: 1. When the car turns, the turning radius of the inner wheel and the outer wheel is different, and the turning radius of the outer wheel is greater than the turning radius of the inner wheel, which requires that the speed of the outer wheel is higher than the speed of the inner wheel when turning; 2. While transmitting power to the half-shafts on both sides, the differential allows the half-shafts on both sides to rotate at different speeds, so as to meet the unequal distance driving of the wheels on both sides in the form of pure rolling as much as possible, so as to reduce the friction between the tires and the ground; 3. The trajectory of the wheel of the car is an arc when turning, if the car turns to the left, the center point of the arc is on the left side, in the same time, the arc of the right wheel is longer than the left wheel, in order to balance this difference, the left wheel is a little slower, the right wheel is faster, and different speeds are used to make up for the difference in distance.

The car differential is a four-wheel drive configured to adjust the speed difference between the left and right wheels. To drive four wheels, all wheels must be connected. When the four wheels are mechanically connected, the car cannot spin at the same speed when driving in a curve.

In order to make the speed of the car curve basically the same, it is necessary to add an intermediate differential to adjust the speed difference between the front and rear wheels. Four-wheel drive vehicles will have many problems when driving, such as sharp turning braking, front and rear drive wheel train interference, etc. The differential can absorb the speed difference of the front wheels, so the addition of a ** differential can change the speed of the front and rear propeller shafts.

The differential has the following functions: 1. The differential has the function of an anti-slip differential and a gear-type differential. Its main function is that when the car is moving, it needs to use a differential to transmit power to the half shafts on both sides and allow the half shafts on both sides to rotate at different speeds.

So far, the wheels on both sides of the car have been driving as pure rolling as possible, driving at uneven distances. 2. This can greatly reduce the friction between the ground and the tire, which not only reduces the running resistance of the car and improves the running speed of the car, but also protects the tire to a certain extent, makes the tire more difficult to wear, and reduces the frequency of tire replacement. 3. The differential plays a huge role and is an indispensable part of the normal driving of the car.

The differential is generally composed of three parts, and when the car is driving, a series of auto parts are buried to work together. The differential starts working when the power of the engine is transmitted to the differential through the intermediate parts. The function of the differential noise is to directly drive the planet carrier, reach the wheels of the car through other components, and make the car move.

4. The differential automatically adjusts when adjusting the speed of the car. Moreover, its energy consumption also adopts the scientific principle of minimum energy consumption. In this way, the differential can adjust the energy consumption of the car to the lowest state when the car is moving, so that the driving efficiency of the car can reach the maximum.

When the car turns, the differential also plays its most basic role to improve the running performance of the car.

The function of the differential is to meet the requirements of different wheel speeds on both sides when the car is turning. The differential is mainly composed of left and right half-shaft gears, two planetary gears and a gear carrier. The function is to make the left and right wheels roll at different speeds when the car turns or drives on uneven roads, that is, to ensure that the driving wheels on both sides do pure rolling motion.

The classification of differentials is as follows: 1. Gear differentials. Due to structural reasons, such a differential distributes equal torque to the left and right wheels.

The torque equalization performance of this differential satisfies the normal driving of the car on a good road surface, but when the car is driving on a bad road, it seriously affects the passing ability. 2. Anti-slip differential. When one side of the driving wheel slips on a bad road, the torque can be transmitted to the driving wheel on a good road surface, and the adhesion of this driving wheel can be used to generate sufficient driving force.

3. Double worm differential. It is characterized that two worms that mesh with each other are installed in the rotor obliquely, and the two worm shaft ends are connected with the output shafts on both sides respectively, and the connection can be connected by gear connection or universal joint, the gear ring is installed on the rotor, and the whole is fixed in the housing by the bearing, and the power source is input by the gear ring, and the output shaft on both sides outputs power.

Differential effectWhen the car turns, the turning radius of the inner wheel and the outer wheel is different, and the turning radius of the outer wheel is greater than the turning radius of the inner wheel, which requires that the rotation speed of the outer wheel is higher than that of the inner wheel when turning. The function of the differential is to meet the requirements of different wheel speeds on both sides when the car is turning! This function is the most basic function of the differential.

Constitute. Ordinary differentials are composed of planetary gears, planetary wheel carriers (differential housings), half-shaft gears, and other parts. The power of the engine enters the differential through the transmission shaft, directly drives the planetary wheel carrier, and then the planetary wheel drives the left and right half shafts to drive the left and right wheels respectively.

The design requirements of the differential are: (left half shaft speed) + (right half shaft speed) = 2 (planetary wheel carrier speed). When the car goes straight, the rotation speed of the left and right wheels and the planetary wheel carrier is equal and in a balanced state, and the balance state of the three is destroyed when the car turns, resulting in the decrease of the rotation speed of the inner wheel and the increase of the rotation speed of the outer wheel.

The differential is a mechanism that can make the left and right drive wheels move at different speeds, and its function is to meet the requirements of different wheel speeds on both sides when the car turns, so that the car can pass the corner smoothly.

The differential is because when the car is turning, the path taken by the outside wheels is larger than that taken by the inside wheels, so if the car wants to turn smoothly and precisely, it needs a device that can convert and allow the inner and outer wheels to rotate at different speeds, so as to compensate for the difference in distance at different speeds.

The earliest differentials were invented in Chinese guide cars to power dolls, but they did not appear in large quantities until the general use of automobiles in the industrial era, and the power was also exported from the engine to the wheels in reverse.