EXHAUST GAS PURIFICATION SYSTEM FOR ENGINEERING MACHINE

摘要

An object of the present invention is to provide an exhaust gas purifying system for a work machine capable of efficiently burning and reducing particulate matter deposited on a filter by using an operation pause time of a working machine and avoiding a decrease in working efficiency by regeneration control .;The operation unit 17 of the display device 16 is provided with a function as a means for presetting the operation stoppage time of the hydraulic excavator and a work stop switch 13 for notifying that the operation of the hydraulic excavator is stopped. When it is notified that the hydraulic excavator has entered the work rest state, the vehicle body control device 21 calculates the time required for burning off the accumulation amount of the current particulate matter stored in the filter by the regenerating device, (4a) of the engine control device (4) is operated during the set work stoppage time when the calculated time is longer than the set work stoppage time, and the electromagnetic switch valve 15 to the closed position.;An exhaust gas purification system, an engine control device, a display device, a control unit,