公开(公告)号：EP2578858A4

公开(公告)日：2018-03-28

申请号：EP11786514

申请日：2011-05-16

申请人： ISUZU MOTORS LTD

发明人： IKEDA TAKASHI ,  MURATA TETSUYA ,  YAGINUMA KENZOU

IPC分类号： F02D41/38 ,  B01D46/00 ,  B01D46/42 ,  F01N3/02 ,  F01N3/023 ,  F01N3/035 ,  F01N3/08 ,  F01N3/10 ,  F02D9/04 ,  F02D9/06 ,  F02D41/02 ,  F02D41/04 ,  F02D41/08 ,  F02D41/14 ,  F02D41/24 ,  F02D41/40

CPC分类号： F01N3/0821 ,  B01D46/006 ,  B01D2279/30 ,  F01N3/0235 ,  F01N3/035 ,  F01N3/106 ,  F02D41/0245 ,  F02D41/029 ,  F02D41/08 ,  F02D41/1446 ,  F02D41/1482 ,  F02D41/1489 ,  F02D41/2493 ,  F02D41/405 ,  F02D2041/1409 ,  F02M26/00 ,  F02M26/05 ,  Y02A50/2322 ,  Y02T10/26 ,  Y02T10/44

摘要： Provided is an exhaust gas purification system which is capable of accurately controlling idling mode automatic regeneration when a vehicle is stopped during running mode automatic regeneration and also preventing the temperature of exhaust gas from overshooting even when the idling mode automatic regeneration is shifted to running mode automatic regeneration. In the exhaust gas purification system, a DPD 25 for trapping PM in exhaust gas is connected to an exhaust pipe 20 of a diesel engine 10 to automatically regenerate the DPD by raising a temperature of the exhaust gas from a diesel engine 10 by carrying out post injection when an amount of PM in the DPD 25 exceeds a predetermined amount. Further, the system includes detecting the temperature of the exhaust gas during DPD regeneration when the DPD is automatically regenerated, calculating a deviation between the detected temperature of the exhaust gas and a target temperature for the DPD regeneration, and controlling a quantity of the post injection by resetting an integral control term used in a PID control to zero when running mode automatic regeneration is shifted to idling mode automatic regeneration after a vehicle is stopped, when PID-controlling the quantity of the post injection based on the deviation.

公开(公告)号：EP2581592A4

公开(公告)日：2018-04-04

申请号：EP11792541

申请日：2011-06-10

申请人： ISUZU MOTORS LTD

发明人： OCHI NAOFUMI ,  HARA SHINJI ,  YAGINUMA KENZOU

IPC分类号： F02D43/00 ,  F01N3/025 ,  F01N9/00 ,  F02D41/00 ,  F02M26/08 ,  F02M26/15

CPC分类号： F02M25/07 ,  F01N3/0253 ,  F01N9/002 ,  F01N2610/03 ,  F02B29/0406 ,  F02D41/0055 ,  F02D41/029 ,  F02D2200/0614 ,  F02D2200/101 ,  F02M26/08 ,  F02M26/15 ,  F02M26/23 ,  Y02T10/47

摘要： Provided is an exhaust pipe injection control device capable of optimally controlling an degree of EGR opening during DPF regeneration. The device comprises a regeneration-time opening control unit (173) which controls a degree of EGR opening of an EGR device (123) during DPF regeneration. The device further comprises a regeneration-time opening map (172) in which an optimal degree of EGR opening of the EGR device (123) during DPF regeneration is set in advance according to an engine rotation speed and a fuel injection amount of an engine (101). The regeneration-time opening control unit (173) performs exhaust gas recirculation by referring to the regeneration-time opening map (172) based on the engine rotation speed and the fuel injection amount of the engine (101) and controlling the degree of EGR opening of the EGR device (123).