公开(公告)号：EP1680200A4

公开(公告)日：2008-05-21

申请号：EP04800516

申请日：2004-11-02

申请人： INT ENGINE INTELLECTUAL PROP

发明人： WANG ZINLEI ,  GUI XINQUN ,  REN SHOUXIAN ,  ZHANG GUOQING

IPC分类号： F01N3/00 ,  B01D20060101 ,  F01N3/02 ,  F01N3/023 ,  F01N5/04 ,  F01N13/02 ,  F02B37/00 ,  F02D41/00 ,  F02D41/02 ,  F02M25/06

CPC分类号： F01N3/023 ,  F01N13/0097 ,  F02B37/00 ,  F02D41/0007 ,  F02D41/029 ,  F02D2200/0812

摘要： A control system (Figure 4) for controlling regeneration of a DPF (42) comprises a favorable-condition-based control section (52), a regular control section (54), and a regeneration termination control section (56). Section (54) initiates regeneration when the actual soot loading (CDPF DELTA P) of the DPF becomes sufficiently large to mandate initiation of regeneration. Section (52) initiates regeneration when the actual soot loading (CDPF DELTA P) reaches an amount (SOOTLOADING) less than the amount at which section (54) mandates regeneration, provided that selected engine operating conditions (MFDES, ENGINE SPEED) disclose conditions favorable for regeneration. Section (56) terminates regeneration when soot loading (CDPF DELTA P) is reduced to some minimum amount (DELTA P MIN) or when conditions for continuing regeneration become unfavorable. By burning trapped soot during favorable conditions, the mandatory regeneration is postponed. This can lower the average amount of trapped soot in the CDPF, thereby lowering the average back-pressure on the engine (20).

公开(公告)号：EP1654450A4

公开(公告)日：2007-07-18

申请号：EP04709951

申请日：2004-02-10

申请人： INT ENGINE INTELLECTUAL PROP

发明人： GUI XINQUN ,  ZHANG GUOQING ,  WANG XINLEI

IPC分类号： F02D1/00 ,  F01N3/023 ,  F01N9/00 ,  F02B37/22 ,  F02D41/02

CPC分类号： F02D41/029 ,  F01N3/023 ,  F01N3/0235 ,  F01N9/002 ,  F01N2260/14 ,  F02D2200/0812 ,  Y02T10/47

摘要： An exhaust system (16) of a diesel engine (10) has a diesel particulate filter (18) for treating exhaust gas. When trapped soot has accumulated to an extent that may affect performance of the filter, an engine control system (12) forces combustion of trapped soot by increasing exhaust back-pressure using a control device (20) such as a back-pressure control valve or vanes of a variable geometry turbocharger.