Its function is to improve the passing capacity of the car on bad roads, that is, when one drive axle of the car is idling, it can quickly lock the differential and make the two drive axles rigidly connected. This can transfer most or even all of the torque to the anti-skid drive axle, and make full use of its adhesion to generate enough traction to keep the car running.
In four-wheel drive, in order to drive four wheels, all wheels must be connected. If the four wheels are mechanically connected, the car can't rotate at the same speed when driving in a corner. In order to make the speed of the car basically the same when driving in corners, an intermediate differential is needed to adjust the speed difference between the front and rear wheels.
Extended data
When the car turns a corner, the track of the wheel is an arc. If the car turns left, the center of the arc is on the left. At the same time, the radian of the right wheel is longer than that of the left wheel. In order to balance this difference, the left wheel should be slower and the right wheel should be faster, and the distance difference should be compensated by different rotational speeds.
If the rear axle is made into a whole, the speed difference between the wheels on both sides cannot be realized, that is, it cannot be adjusted automatically. In order to solve this problem, as early as one hundred years ago, luis renault, the founder of French Renault Automobile Company, designed the differential.
In order to improve the passing ability of cars on bad roads, some off-road vehicles and luxury cars are equipped with anti-skid differentials.
The characteristic of anti-skid differential is that when a driving wheel slides on a bad road, it can transfer most or even all of the torque to the driving wheel on a good road, so as to make full use of the adhesion of this driving wheel to generate enough driving force to make the car start smoothly or continue driving.
In order to meet the above requirements, the simplest method is to set a differential lock on the symmetrical bevel gear differential to make it a strong locking differential. When one side drives the wheel to rotate, the differential lock can be used to lock the differential without the action of the differential.
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