System for producing a braking signal in a motor vehicle

Abstract

The invention proceeds from a system for generating a signal which represents a deceleration operation of a motor vehicle having a motor. The signal is especially for driving the brake lamps of the motor vehicle. Furthermore, a control apparatus is present which controls (open loop or closed loop) the motor in dependence upon the data, which are present in the control apparatus. The essence of the invention is that the data, which are present in the control apparatus and which are applied for generating the signal, represent at least the drag torque, which is effected by the motor (the motor drag torque). With the system of the invention, a relatively precise index for a vehicle deceleration is obtained from the data present anyway in the motor control apparatus at least in newer or future motor control apparatus. If a drive of the brake lamps takes place in dependence upon the signal generated in accordance with the invention, then the traffic following is also made aware of the decelerations which are not directly attributable to an actuation of a brake.

Dependencies are inferred from the claim text.