Vehicle weight of estimation device, the vehicle weight estimation method and rollover suppression apparatus for a vehicle

摘要

PROBLEM TO BE SOLVED: To provide an estimation device for vehicle weight capable of improving estimation precision of an estimated value of vehicle weight after a vehicle starts, an estimation method for vehicle weight, and a rolling suppression device for a vehicle.SOLUTION: An ECU for brake resets an estimated value MS of vehicle weight to an initial value MS_Re (second timing t12) when it is determined that a stop condition is met, and acquires a temporary estimated value Mn based upon a predetermined number of vehicle weight data computed at predetermined periods after the vehicle starts (fourth timing t14) when the vehicle starts (third timing t13). The ECU for brake puts the estimated value MS of vehicle weight back to the estimated value MA before resetting when the difference ΔM between the estimated value Ma before resetting and the temporary estimated value Mn is less than a determination value.