Abstract: The invention relates to an electromechanical brake booster with an electric motor and a helical gearing. The brake booster is used for coupling an auxiliary force via a driver into a piston rod. The invention proposes connecting a spindle of the helical gearing elastically via a spring element to the piston rod such that, in the event of rapid actuation of the brake, the helical gearing and a rotor of the electric motor do not have to be accelerated entirely muscle power. The muscle power required for actuating a brake is reduced as a result in the event of a rapid actuation of the brake.

Abstract: The invention relates to a braking system (1) comprising an actuator unit (10), said actuator unit comprising a brake pedal (2), a pedal simulator (4), and a brake servo (12), and a main brake cylinder (20) by way of which at least one wheel brake (42, 44, 46, 48) may be actuated, said wheel brake having a braking pressure that may be predetermined, wherein the brake pedal (2) or the brake servo (12) acts on the main brake cylinder (20) to increase or decrease a braking force.