Operation of a brake booster as a pedal simulator

摘要

The invention describes a method for operating a controllable electromechanical brake booster and the corresponding brake booster which, via a coupling element between the brake booster and pedal rod, is capable of applying a force in opposition to the pedal activation force of a driver, and can therefore be operated as a pedal simulator. For this purpose, a pedal opposing force can be set by a characteristic curve as a function of a pedal position which is predefined by the driver, and can give the driver a pedal sensation even if there is no reaction of, for example, a conventional brake system. In a further operating mode, the brake booster can be operated in its original form.

主权项

1. A brake booster that is mounted in a motor vehicle and is configured to boost a force exerted by a driver on a brake pedal and to produce a counteracting force on the brake pedal acting in opposition to the force exerted by the driver, the brake booster comprising:
a motor configured in a first mode of operation to actuate a boosting element to actuate a master cylinder of the motor vehicle and in a second mode of operation to actuate the boosting element so as to set the counteracting force acting on the brake pedal as a function of one of a pedal travel distance during a brake pedal actuation and the force exerted by the driver on the brake pedal during the brake pedal actuation.