Title:
エンジン作業機
Document Type and Number:
Japanese Patent JP7079725
Kind Code:
B2
Abstract:
The present invention provides an engine working machine capable of suppressing dysfunction of an exhaust catalyst and degradation of engine performance. If a fuel supply amount of a fuel supply device (19a) reaches a prescribed dummy load cancellation determination value by an increase of a total load of an engine (E) including a dummy load and a work load while supplying the dummy load to the engine (E), the supplying of the dummy load is canceled by a switch of a load switch device (7) by an electronic control device (20). If the fuel supply amount of the fuel supply device (19a) reaches a prescribed dummy load resupplying determination value by a decrease of the work load while supplying the work load to the engine without including the dummy load, the dummy load is resupplied by a switch of the load switch device (7) by the electronic control device (20). An exhaust temperature of an inlet of an exhaust catalyst (34) is maintained at a value exceeding a prescribed setting value by maintaining the fuel supply amount at a value exceeding a prescribed setting value while operating the engine.
Inventors:
Hideo Shimo
Hiroki Ishii
Tatsuya Ueshima
Hiroki Murata
Hiroki Ishii
Tatsuya Ueshima
Hiroki Murata
Application Number:
JP2018246773A
Publication Date:
June 02, 2022
Filing Date:
December 28, 2018
Export Citation:
Assignee:
Kubota Corporation
International Classes:
F01N3/20; F01N3/025; F01N3/035; F01N3/24
Domestic Patent References:
| JP2016104974A | ||||
| JP2016223367A | ||||
| JP61065226U | ||||
| JP5506704A |
Foreign References:
| US20140327248 | ||||
| US20080078166 |
Attorney, Agent or Firm:
Suzue Shoji