Brake light controlling method for e.g. electric vehicle, involves activating brake light when torque supplied by machine exceeds preset threshold, and deactivating activated brake light when torque falls below another preset threshold

摘要

The method involves activating a brake light when torque (bm-eM) supplied by an electrical machine exceeds a preset threshold. The activated brake light is deactivated when the torque falls below another preset threshold, which is smaller than the former threshold. The brake light is activated and/or deactivated based on a motor speed gradient (n-eM), supplied current (I-eM), a vehicle deceleration value (a-Fzg) of the machine. The vehicle deceleration is determined based on a signal (a-S) of an acceleration sensor.