HYDRAULIC CIRCUIT SYSTEM FOR FORCED REGENERATION OF DIESEL PARTICULATE FILTER

摘要

The present invention relates to a hydraulic circuit system for forced regeneration of an exhaust gas after-treatment apparatus. The hydraulic circuit system for forced regeneration of an exhaust gas after-treatment apparatus according to the present invention comprises an engine (60) generating power; an exhaust gas after-treatment apparatus (62) for purifying exhaust gas of the engine; a hydraulic pump (10) for discharging hydraulic oil by the power; a main control valve (20) controlling that the hydraulic oil is supplied to an actuator (40) of a working machine; a regulator (50) which regulates a swash plate angle of the hydraulic pump (10) according to the size of discharge pressure of the working fluid in the hydraulic pump (10) to control a flow amount of the discharged hydraulic oil; and a forced regeneration valve (100) which blocks discharge pressure of the hydraulic oil supplied to the regulator (50) when the exhaust gas after-treatment apparatus (62) is in a forced regeneration mode and is operated to maximize the flow rate of the discharged hydraulic oil of the hydraulic pump (10).