Patent ID: 6493621
Filing Date: 2002-12-10
Classification: B60T

Abstract:
A system for stand-by brake torque control wherein brake pressure increases till completion of pressure build-up for stand-by take torque applied to an automotive vehicle under a condition of approaching or following an obstacle preceding the vehicle, the system comprising:an obstacle recognition system detecting a distance to the obstacle preceding the vehicle; a vehicle speed sensor detecting traveling speed of the vehicle; an accelerator operable by an operator of the vehicle; an accelerator sensor detecting operator demand for vehicle acceleration from motion of the accelerator; an operator reaction responsive sensor detecting reaction by the operator; and a controller programmed; to perform stand-by brake torque control before operator action for braking, to select one of predetermined different emergency levels in response to at least one of the detected distance the detected traveling speed, the detected operator demand, and the detected reaction, and to determine one of various variation rates in response to the selected one emergency level for initiating the stand-by brake torque control by increasing brake pressure at the determined one variation rate till completion of pressure build-up for stand-by brake torque applied to the vehicle.