Patent ID: 6226593
Filing Date: 2001-05-01
Classification: B60T

Abstract:
Method for braking a motor vehicle at low speeds in order to avoid a collision with an obstacle in its immediate vicinity, the distance (.DELTA.s) and the relative speed (.DELTA.v) between the vehicle and the obstacle being determined by sensor and being based on the calculation of a necessary brake pressure or a deceleration, and the brake pressure being generated at least partially independently of the driver, comprising the steps of:(1) in the case where the relative speed (.DELTA.v) is less than a threshold value (v.sub.s) and the distance (.DELTA.s) is less than a proximity limit (S.sub.NG), the braking torque (M.sub.Br) and the engine torque (M.sub.M), which is composed of the engine drive torque and the overrun torque, are adjusted in such a way that both the braking torque (M.sub.Br) and the engine torque (M.sub.M) are greater than zero, the braking torque (M.sub.Br) being smaller than the engine torque (M.sub.M); and(2) in the case where the distance (.DELTA.s) is less than a stop limit (S.sub.SG) which is smaller than the proximity limit (S.sub.NG), the braking torque (M.sub.Br) and the engine torque (M.sub.M) are adjusted in such a way that the braking torque (M.sub.Br) exceeds the engine torque (M.sub.M).