公开(公告)号：EP3561273A1

公开(公告)日：2019-10-30

申请号：EP19166371.5

申请日：2019-03-29

Applicant: Kubota Corporation

Inventor： Yoshita, Yuki ,  Kita, Kentaro ,  Kuno, Tamotsu ,  Fujiwara, Masanori ,  Funaki, Koichi ,  Inoue, Katsushi

IPC: F02D41/02 ,  F02D41/22 ,  F01N9/00 ,  F01N11/00 ,  B01D46/00 ,  B01D46/44

Abstract: There is provided an exhaust treatment device for a diesel engine that can prevent unnecessary alarm for ash deposition from being issued.
In the exhaust treatment device, a timer measures integrated time IT of a state of non-regenerative operation which ranges from an end of DPF regeneration to a next time point where the differential pressure reaches a regeneration request value; a counter acquires the short interval count IC, if the integrated time IT is a short interval shorter than a predetermined decision time; and an alarm device issues an alarm, if the consecutive short interval count IC reached a predetermined plural necessary count for alarm. A short interval count IC having been already acquired is preferably reset to 0, if the integrated time IT of the state of non-regenerative operation is a long interval not shorter than a predetermined decision time, before the short interval count IC reaches a predetermined necessary count for alarm.

公开(公告)号：EP3502432A1

公开(公告)日：2019-06-26

申请号：EP18205070.8

申请日：2018-11-08

Applicant: Kubota Corporation

Inventor： Kai, Akihiko ,  Inoue, Katsushi ,  Sugimoto, Masahiko ,  Kita, Kentaro ,  Shimoji, Hideo ,  Murata, Hiroki ,  Nakamura, Gen

IPC: F01N9/00 ,  F02D9/04 ,  F02M26/28 ,  F02M26/73

Abstract: An engine in which activation of a catalyst 13 is promoted is provided.
In an engine including an exhaust manifold 1, an exhaust lead-out path 2 led out from a manifold exit 1a of the exhaust manifold 1, a catalyst case 3 provided on the exhaust lead-out path 2, and a catalyst 4 housed in the catalyst case 3, when a front-back direction is defined to be a direction in which a crankshaft 14 is extended, the exhaust manifold 1 and the catalyst case 3 are both extended in the front-back direction and disposed side by side in a direction orthogonal to the front-back direction. It is preferable that the engine further includes a supercharger 6 attached to the manifold exit 1a of the exhaust manifold 1, and the catalyst case 3 is attached to a turbine exit 6a of the supercharger 6. It is preferable that the engine further includes an exhaust relay pipe 7 attached to the manifold exit 1a of the exhaust manifold 1, and the catalyst case 3 is attached to a relay pipe exit 7a of the exhaust relay pipe 7. It is preferable that the engine further includes an exhaust throttle device 8 provided on an exhaust downstream side of the catalyst 4.