SENSOTRONIC BRAKE

SENSOTRONIC BRAKE

                                Sensotronic Brake Control(SBC) is an innovative electronically controlled brake system that is faster and more precise than the conventional braking system. Sensotronic Brake Control (SBC) is the name given to an innovative electronically controlled brake system which will fit to future passenger car models. With Sensotronic Brake Control electric signals are used to pass the driver’s braking commands onto a microcomputer which processes various sensor Signals simultaneously and, depending on the particular driving situation, calculates the optimum brake pressure for each wheel.

 

BRAKE PEDAL AND CONTROL UNIT

BRAKE PEDAL

                     In the Sensotronic Brake Control, a large number of mechanical components are simply replaced by electronics. Sensors gauge the pressure inside the master brake cylinder as well as the speed with which the brake pedal is operated, and pass these data to the SBC computer in the form of electric impulses.

CONTROL UNIT

                    The central control unit under the bonnet is the centrepiece of the electro-hydraulic brake. The microcomputer, software, sensors, valves and electric pump work together and allow totally novel, highly dynamic brake management. In addition to the data relating to the brake pedal actuation, the SBC computer also receives the sensor signals from the other electronic assistance systems. For example, ESP which makes available the data from its steering angle and turning rate.

SBC COMPONENTS

Microcomputer: - This system calculates the braking force for each wheel individually.

High Pressure Accumulator: - High-pressure accumulator contains the brake fluid which flows into the system.

Hydraulic Unit: - They meter the brake pressure according to requirements and pass it to the brakes.

Wheel Speed Sensor: - Generating signals representative of the wheel-speed.

FEATURES OF SBC

Emergency braking- Recognizes the driver’s rapid movement from the accelerator onto the brake pedal.

Driving stability- It stops the car from turning aside suddenly.

Comfort- Provides comfort particularly during sharp deceleration or when the anti-lock braking system is operational.

Braking in corners- SBC offers the possibility of assigning brake forces in a way appropriate to the situation.

ELECTRONIC SENSORS USED IN SBC

—      Pedal Travel Sensor (Situated at Brake Pedal)

—      Steering Angle Sensor (Situated at Steering)

—      Wheel Speed Sensor (Situated at Every Wheel)

—      Hydraulic Unit Sensor (Situated at Front Wheel)

FUNCTIONS OF SBC

                           The Soft-Stop function of the SBC software ensures particularly gentle and smooth stopping during heavy traffic jams. On a wet road surface the system metes out short brake impulses at regular intervals to ensure that the water film on the brake discs dries off and that SBC can always operate with optimum effectiveness. On hills or steep drives the Sensotronic Brake Control Drive-Away Assist prevents the car from rolling backwards or forwards – stepping onto the brake pedal quickly but sharply is all it takes to activate the brake.