Brake Assist System Presented by Sanil Kumar P

Brake Assist System Presented by Sanil Kumar. P. V Roll no: 62 S 7 Mechanical Engg:

INTRODUCTION Brake assist senses emergency braking by detecting the speed at which the driver presses the brake pedal and immediately applying all available power boosts. brake assistance can potentially reduce overall stopping distance by eliminating the delay caused by a common human tendency of braking hard enough or soon enough.

HISTORY Mercedes originally invented this system in the 1990’s to shorten emergency stopping distances takes over if a driver applies the brakes quickly but too gently in a critical situation. The system automatically develops maximum brake boost with split-second speed, so reducing the stopping distance by a significant margin.

Working

Ø Driver does not step forcefully enough on the brake in an emergency. As a result, only a small amount of brake force is generated. Ø The pedal effort of this type of driver might weaken as time passes, causing a reduction of braking force. Ø Based on how quickly the brake pedal is depressed, brake assist assesses the intention of the driver to apply emergency braking and increases the brake force. Ø After the brake assist operation, if the driver intentionally releases the brake pedal, the assist operation reduces the amount of force simultaneously.

Comparison

ABS and Brake Assist 1. [Vehicles not Equipped with ABS] 2. Tires lock under sudden braking, vehicle body orientation becomes unstable, and steering wheel inputs cannot control the vehicle. 3. [Vehicles Equipped with ABS] 4. Tires do not lock under sudden braking, vehicle body orientation is as stable as possible, and steering wheel inputs can help avoid an obstacle.

Brake Assist Systems Ø Electronic Brake Assist Ø Mechanical Brake Assist Ø Hydraulic Brake Assist

Electronic Brake Assist BA

Mechanical Brake Assist MBA

Hydraulic Brake Assist HBA

Brake Assist PLUS: Radar sensors for early accident detection �Situation-related braking assistance when an accident threatens �Accident rate reduced from 44 to 11 percent in simulator tests

Radar sensors for early accident detection

The future: from Brake Assist PLUS to the PRE-SAFE braking system Mercedes-Benz combines Brake Assist PLUS with the equally unique occupant protection system PRE-SAFE®, which offers even more safety functions on board the new S -Class. PRE-SAFE® recognizes potential accident situations as they arise:

Conclusion Ø Innovative technology Ø Impressive proof of the effectiveness of Brake Assist Ø Also be developed into an autonomous braking system Ø Less accidents hence less fatalities Ø Allows the driver feel safer in his car