How does a differential work, what is the working principle of a differential

This adjustment of the differential is automatic, and here it involves the "principle of minimum energy consumption", that is, all objects on the earth tend to consume the least amount of energy. For example, if you put a bean in a bowl, the bean will automatically stay at the bottom of the bowl and never on the wall of the bowl, because the bottom of the bowl is the lowest energy (potential energy), and it will automatically choose to be stationary (with the least kinetic energy) and will not be constantly moving. In the same way, the wheels automatically tend to the lowest energy consumption when turning, and automatically adjust the speed of the left and right wheels according to the turning radius.

When turning, due to the phenomenon of slipping and dragging on the outer wheel, the phenomenon of slipping on the inner wheel, the two driving wheels will produce the additional force in opposite directions at this time, due to the "principle of minimum energy consumption", the speed of the wheels on both sides will inevitably be different, thereby destroying the balance relationship of the three, and reflected on the half-shaft gear through the half-shaft gear, forcing the planetary gear to produce rotation, so that the speed of the outer half-shaft is accelerated, and the speed of the inner half-shaft is slowed down, so as to realize the difference of the speed of the wheels on both sides. If the drive wheels on both sides of the axle are rigidly connected by a full shaft, the two wheels can only rotate at the same angle. In this way, when the car is turning, because the outer wheel moves a larger distance than the inner wheel, the outer wheel will produce slippage while rolling, and the inner wheel will produce slippage while rolling.

Even when a car is driving in a straight line, the wheels can slip due to uneven road surfaces or unequal tire rolling radii (tire manufacturing errors, different wear, uneven loading, or uneven air pressure) that cause the wheels to slip. When the wheels slip, it not only exacerbates tire wear, increases power and fuel consumption, but also makes it difficult for the car to steer and the braking performance worse. In order to prevent the wheels from slipping as much as possible, the structure must ensure that each wheel can rotate at different angles.

When the vehicle is turning, there will be a speed difference between the left and right wheels.

How car differentials work! Do you see it?

There are angle teeth, pelvic teeth, and planetary teeth in the differential, and the speed between the two planetary teeth is not the same as the fast one rotates slowly, and if the two rotate at the same time, it will rotate forward or reverse, depending on the direction of the angle tooth rotation.

When the vehicle is turning, there will be a speed difference between the left and right wheels.

When the differential is running normally, the planetary gear in the differential is in revolution, and the planetary gear is rotating in rotation to adapt to the speed difference between the inner wheel and the outer wheel when turning, so as to reduce the wear of the tire.

The speed adjustment of the differential is automatic, which involves the principle of minimum energy consumption, that is, all objects on the earth tend to consume the least energy.

To put it simply, a differential works by splitting the engine's torque in two, allowing two different speeds to be output when steering.

When the car goes straight, the two planetary gears only rotate and do not rotate. According to the mechanics, the inside wheels are bound to turn slower when cornering. At this time, the speed of the drive shaft remains unchanged, and the planetary wheel rotates around the half shaft at this time.

When the car turns, the front wheels cover different distances than the rear wheels. Some four-wheel drive cars do not have a differential between the front and rear wheels, but instead they are fixed together so that the front and rear wheels can rotate at the same average speed when steering. That's why this vehicle has a hard time steering when the four-wheel drive system is busy.

The origin of the differential

The trajectory of the wheels of the car is arc when it turns, and if the car turns to the left, the center point of the arc is on the left. In the same amount of time, the right wheel travels a longer arc than the left wheel. In order to balance this difference, the left wheel should be slower and the right wheel faster, and different speeds should be used to compensate for the difference in distance from the source tree.

When turning, the outer wheel has the phenomenon of slipping and dragging, and the inner wheel has the phenomenon of slipping. At this time, the two driving wheels will produce two additional forces in opposite directions, resulting in different rotational speeds of the two pulley wheels, thus destroying the balance between the three. It is reflected on the half-shaft gear through the half-shaft gear, forcing the planetary gear to rotate.

The speed of the inner half shaft is slowed down and the speed of the outer half shaft is accelerated, so that the speed of the two wheels can be different.

The working principle of the differential is that the wheels will automatically move to the lowest energy consumption when turning, and automatically adjust the speed of the left and right wheels according to the turning radius. When turning, because the outer wheel has the phenomenon of slipping and dragging, the inner noisy car side wheel has the phenomenon of slipping, the two driving wheels will produce the additional force of two opposite directions at this moment, due to the principle of minimum energy consumption, the speed of the wheels on both sides is inevitably different, thereby destroying the balance relationship of the three, and is reflected on the half-shaft gear through the half-shaft, forcing the planetary gear to produce rotation, so that the inner half-shaft speed slows down, and the outer half-shaft speed accelerates, so as to realize the difference of the speed of the wheels on both sides.

Introduction to differentials

The differential speed of the car allows the suspect to make the left and right drive wheels rotate at different speeds. It is mainly composed of left and right half-shaft gears, two planetary gears and gear carriers.

The principle of the differential is as follows: 1. In the process of force transmission, the two bevel gears of planetary gear and half shaft gear act a large axial force, in order to reduce the wear between the gear and the differential shell, the flat gasket and spherical gasket are respectively installed on the back of the half shaft gear and the planetary gear; 2. The lubrication of the differential is carried out together with the final reducer. In order for the lubricating oil to enter the differential, there is often a window in the differential housing.

In order to ensure that the lubricating oil can smoothly reach between the planetary gear and the planetary gear shaft journal, a plane is milled out on the planetary gear shaft journal, and a radial oil hole is drilled between the teeth of the planetary gear; 3. In cars below the intermediate level, because the torque of the driving wheel is not large, two planetary gears are used in the differential. The corresponding planetary gear shaft phase is a straight pin shaft, and the differential shell can be made into an integral shell with a large window hole, through which the operation of disassembling the planetary gear and the half-shaft gear can be carried out.