EXHAUST PURIFICATION SYSTEM FOR WORK VEHICLE

摘要

An exhaust purification system for a traveling work vehicle such as a hydraulic excavator, in which manual regeneration control of a filter for capturing particulate matter contained in exhaust gas is performed in an appropriate condition in which the manual regeneration control and operation of a work system are not affected each other. The operation (manual regeneration control) of a fuel injection device (40) for regeneration is started when a manual regeneration start switch (39) is operated, an engine control dial (2) is operated to instruct a low idle speed, and a gate lock lever (22) is operated to a second position (B) for disabling generation of control pilot pressures (a-f) by remote control valves (25, 26, 27). Even during manual regeneration control, the control is immediately terminated if the gate lock lever (22) is operated to a first position (A).