Exhaust treatment device for diesel engine

An exhaust treatment device for a diesel engine including:

• a diesel particulate filter (DPF) disposed in an engine exhaust passage;
• a combustible gas generator including a gas generation catalyst;
• and an electronic control device,
• a regeneration process of the DPF is performed according to an instruction of the electronic control device,
• in the regeneration process of the DPF a liquid fuel and air are supplied to the combustible gas generator to form an air-fuel mixture during engine operation, wherein a combustible gas is generated by a catalytic reaction of the air-fuel mixture in the presence of the gas generation catalyst, wherein an engine exhaust temperature is raised by combustion of the combustible gas, and wherein particulate material (PM) accumulated in the DPF is burned off by heat of the engine exhaust,
• the exhaust treatment device for a diesel engine further including:
• a parked regeneration requirement notification component;
• and
• a parked regeneration start operation component, wherein
• the regeneration process of the DPF includes an automatic regeneration process and a parked regeneration process,
• the automatic regeneration process is automatically started when an estimated amount of PM accumulated on the DPF reaches a predetermined value, and
• the parked regeneration process is performed when a first condition and a second condition are satisfied, the first condition is that the parked regeneration requirement notification component performs a notification of a parked regeneration requirement when a number of cancellations of the automatic regeneration process is equal to or greater than a predetermined value, the second condition is that the parked regeneration start operation component is subjected to a start operation during a parked state in which an engine equipped machine is neither traveling nor working,
• the parked regeneration process is performed when an alternative first condition instead of the first condition and the second condition are satisfied, and
• the alternative first condition is that the parked regeneration requirement notification component performs a notification of a parked regeneration requirement when an accumulated value of time elapsed without finishing the automatic regeneration process reaches a predetermined parked regeneration requirement determination value or more.