a brake assistant is a device in an automobile, which ensures that with braking the necessary pedal pressure is drastically reduced, in order to release a Vollbremsung. Basis for this change of the brake reinforcement characteristic is the speed with that the brake pedal is depressed. Blocking the wheels is prevented thereby by the anti-skid system.
Technically thereby in the brake booster a partially evacuated chamber with atmospheric air pressure is subjected, so that the braking force reinforcement changes. Alternatively can take place also with hydraulics. The release is made by an electronic control.
Background of the introduction is appropriate the inability of many motorists in a danger situation for reacting and without hesitate a Vollbremsung of the vehicle to release.