ARYA INSTITUTE OF

ENGINEERING & TECHNOLOGY

SEMINAR ON

SENSOTRONIC BRAKING SYSTEM

Submitted To:-Mr. Sandeep JhambHOD ME

Submitted By:-Devendra Meena13EAIME851ME-B

CONTENT

INTRODUCTION OF BRAKESHISTORY OF SBCWHAT IS SENSOTRONIC BRAKE CONTROL?TYPES OF BRAKESWHY SENSOTONIC BRAKESBC COMPONENTSFEATURES OF SBC ELECTRONIC SENSORS USED IN SBC FUTURE APPLICATIONSDEMERITS OF SBCCONCLUSIONREFERENCES

INTRODUCTION OF BRAKES

Brakes are mechanical devices used for retarding the motion of a vehicle.

Brakes are also used to stop the vehicle quickly within a short distance.

Brakes are also used to hold the vehicle at rest on an inclined road against the pull of gravity.

HISTORY OF SBC

Robert Bosch has played a role in many innovations.These include the first electronically controlled antilock

braking system (ABS) in 1978, the traction control system (TCS) in 1987, and mass production of the Electronic Stability Program (ESP) in 1995.

The company also helped Mercedes-Benz develop the most technologically advanced system in production—the electro hydraulic brake (EHB) also known as Sensotronic Brake Control (SBC).

WHAT IS SENSOTRONIC BRAKE CONTROL?

o Sensotronic Brake Control is an innovative electronically controlled brake system that is faster and more precise than the conventional braking system.

o Sensotronic Brake Control (SBC) is the name given to an innovative electronically controlled brake system which will fit to future passenger car models.

o 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.

TYPES OF BRAKES

Drum brakesDisk brakesVacuum brakesAir brakesHydraulic brakesRailway brakes

WHY SENSOTONIC BRAKE

Brake pedal: Electronics instead of a vacuum Control unit: Pressure modulators for each wheel Faster and more precisely

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 centerpiece 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.

SBC COMPONENTS…

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-AwayAssist prevents the car from rolling backwards or forwards – stepping onto the brake pedal quickly but sharply is all it takes to activate the brake

FUTURE APPLICATIONS

The advent of electronics in brake technology opens up new and promising opportunities in the disciplines of safety and comfort. By means of SBC we have also moved a considerable way closer to the realization of long-term objective, namely to be able to automatically guide the cars of the future along the roads with the aid of video cameras, proximity radar and advanced telematics. For such autonomous vehicle guidance, the experts need a computer-controlled brake system which automatically acts on the instructions of an electronic autopilot and stops the car safely.

DEMERITS OF SBC

COST: Increases due to electronic components. ASSEMBLING: Slight complex assembling.DIFFICULT FOR MAINTENANCE: Prone to environment

conditions.

CONCLUSION

With reference to the advantages and disadvantages it is concluded that the SBC system may take the place of a conventional brake system in the future.

One of the most important disadvantage that is its higher cost due to the electronic components will get reduced after the adaptation of this system by all automobile companies. Also the maintenance of the electronic component will be easy when we shall get familiar with this system.

Thanks

REFRENCES

www.google.comWikipedia.orgMercedes cancels by-wire brake system; deci

sion a blow to technology's future: AutoWeek Magazine". Autoweek.com. 2014-01-02