TORQUE CONTROL SYSTEM FOR DPF REGENERATION

摘要

A method for controlling the torque of an engine when a DPF is regenerated according to the present disclosure comprises the steps of: detecting outputs of a gear pump and a main hydraulic pump as parameters for correcting a DPF regeneration condition; increasing the flow rate of the gear pump or main hydraulic pump; controlling the torque of an engine so as to reach a predetermined target engine torque value as the flow rate of the gear pump or main hydraulic pump is increased; starting DPF regeneration when the torque of the engine reaches the predetermined target engine torque value; allowing the number of revolutions of the engine to be increased on the basis of the target engine torque value during the DPF regeneration; and performing the DPF regeneration until the temperature of exhaust gas reaches a predetermined target DPF regeneration temperature.