In this design, a hydraulic pump is driven by the cardan shaft. This pump normally works freely, so its resistance force against the movement of the cardan is small or zero, but when braking with the brake pedal, the flow limiting valve is activated and limits the output oil path to the amount of brake pedal pressure. By reducing the cross section of the oil, the speed of the pump is also reduced and therefore causes braking on the cardan shaft. This system works together with disc brakes and shortens the braking distance. Another important advantage of this system is to increase safety in the car, so if for some reason the disc brake of the car has a problem, this system alone can stop the car and prevent accidents caused by the brake being cut.
A pressure relief valve is used to prevent the hydraulic brake from locking.
If due to sudden braking or problems in the brake hydraulic system, this valve acts as a safety valve and opens the oil path at a certain pressure to prevent the brake from locking.
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