The brake pedal and caliper pistons on the Xiaomi SU7 have no physical connection. What is the reason for this design, and what are its advantages?
The Xiaomi SU7 is equipped with Bosch's globally first-ever DPB + ESP10.0 fully decoupled braking system, which has the following 4 advantages:
Compared to traditional mechanical vacuum braking systems, the DPB fully decoupled braking system can achieve faster pressure build-up speed, effectively shortening braking distance, assisting the Xiaomi SU7 Max version's excellent performance of 100km/h-0 braking in 33.3m.
The dual pressure-building module design of DPB and ESP can serve as redundancy for each other. Combined with kinetic energy recovery, it achieves quadruple braking redundancy, maximizing the elimination of brake failure risks, meeting L4-level autonomous driving safety redundancy requirements, and laying the foundation for future upgrades of assisted driving systems;
Under extreme conditions (such as emergency braking), the DPB fully decoupled braking system prevents fluctuations in pedal feedback force caused by ABS operation or fluctuations in master cylinder pressure, providing drivers with stronger braking confidence and ensuring safety;
The DPB fully decoupled braking system can more effectively combine motor kinetic energy recovery and mechanical hydraulic braking. In daily driving, even if kinetic energy recovery is turned off, when the driver presses the brake pedal, the vehicle prioritizes using kinetic energy recovery for deceleration, effectively improving the vehicle's driving range.