| 摘要 |
PROBLEM TO BE SOLVED: To stop the application of a load according to a working situation, to make work smooth, and to prevent the deterioration of fuel economy and the generation of white smoke by interrupting filter regeneration when an exhaust temperature cannot be maintained high at the stop of the application of the load during automatic regeneration control of a particulate filter.SOLUTION: When filter regeneration is started by the determination of the accumulation of particulates, a load requirement to a working unit is outputted to a unit control device from an engine control device at an idling or light-load operation, when the application of the load is impossible, or when a load application cancel switch is turned on, and furthermore, when the exhaust temperature cannot be maintained without being applied with the load, a regeneration interruption signal is outputted to the engine control device from the unit control device (step S7), the reception processing of the regeneration interruption signal is performed by the engine control device (step S8), and fuel addition and automatic regeneration control are interrupted (step S10) without forcibly applying the load to a hydraulic unit (step S9). |
