DEVICE FOR ADAPTIVELY ADJUSTING THE SPEED OF A VEHICLE, WITH MEANS OF DECISION

摘要

A device (DR) is responsible for regulating the speed of a vehicle (V) and comprises calculation means (MC) able to determine, according to a speed reference and / or information relating to the environment , a nominal acceleration set point between minimum and maximum accelerations, and to estimate a maximum running time of the vehicle (V) during freewheeling and whether an engine brake operation is sufficient for the acceleration of the vehicle (V) remains below the maximum acceleration, according to estimates of the acceleration that the vehicle (V) would have if it were respectively coasting and engine braking, and decision means (MD) suitable for determining a acceleration instruction adapted to adjust the speed adaptively according to the nominal acceleration set point, the minimum and maximum acceleration, the maximum freewheeling time estimate and the functional sufficiency under engine braking.