Adjustable brake booster

摘要

The present invention relates mainly to a brake booster that is adjustable, notably in terms of the value of the jump. Advantageously, according to the invention, the target value for equilibrium of operation of the booster actuator is altered. A target value of a signal delivered by a position sensor is defined either by programming the electronic control unit or by selecting a coefficient in a program as a function of the braking characteristic or characteristics that it is desired to implement. Once the setpoint value has been determined, the electronic control unit commands the actuator using a setpoint value so that the actuator permanently and dynamically works toward achieving the previously defined and/or selected target value. The setpoint may be calculated as a function of torque, force, position or some other parameter.

主权项

1. A device for commanding braking in a motor vehicle having a member by which a driver actuates braking, the device comprising:
a reaction device applying a reaction force; a first moving component driven by the member via which the driver actuates the braking; a second moving component having a brake boost actuator driving a force application element wherein the brake boost actuator axially moves the second moving component without moving the first moving component during rest and during braking; a sensor that senses a change of position of said second moving component relative to the first moving component; a processor configured to formulate control setpoints for commanding the brake boost actuator, in such a way as to generate a variable offset between the positions of said first and second moving components during a single braking stroke and to maintain said offset at a control setpoint both while braking and while at rest.