Provided is an exhaust-treatment device for a diesel engine, said device being capable of suppressing engine noise. In a first stage P1 of an exhaust-temperature-raising process, a target engine speed is set to a prescribed first target speed R1 and an int...

Provided is a diesel engine which can efficiently regenerate a diesel particulate filter in accordance with the state of an operation. The control for regeneration using an ECU in the diesel engine is comprised of first regeneration wherein particulate mat...

Disclosed is a hydraulic drive system for a working machine, which enables to conduct forced regeneration continuously for a sufficient time. Based on an input of a lock detection signal S1 from a gate lock detection switch 40, a controller 50 detects that...

The reliability of backwashing valves constituted of first backwashing valves and second backwashing valves is ensured. A first backwashing valve (backwashing-gas rear valve) (7) that controls gas for backwashing and a second backwashing valve (backwashing...

Provided is a method of diagnosing regeneration failure of an exhaust emission control device including filter regenerating means for forcibly heating a particulate filter 13 so as to burn off captured particulates. An exhaust flow rate to the particulate ...

Provided is an exhaust emission control device which can properly burn off soot and soluble organic fraction attached to and accumulated on electrodes of a plasma generator. The exhaust emission control device with a post-processing device (catalyst regene...