Global Patent Index - EP 1458958 A1

EP 1458958 A1 20040922 - ENGINE CYLINDER DEACTIVATION TO IMPROVE THE PERFORMANCE OF EXHAUST EMISSION CONTROL SYSTEMS

Title (en)

ENGINE CYLINDER DEACTIVATION TO IMPROVE THE PERFORMANCE OF EXHAUST EMISSION CONTROL SYSTEMS

Title (de)

MOTORZYLINDERDEAKTIVIERUNG ZUR VERBESSERUNG DER LEISTUNG VON ABGASREINIGUNGSSYSTEMEN

Title (fr)

DESACTIVATION DE CYLINDRE DE MOTEUR PERMETTANT D'AMELIORER LA PERFORMANCE DE SYSTEMES DE COMMANDE D'EMISSION D'ECHAPPEMENT

Publication

EP 1458958 A1 (EN)

Application

EP 02804444 A

Priority

  • US 0237775 W
  • US 33450701 P
  • US 36070102 A

Abstract (en)

[origin: WO03048533A1] The invention provides a controller (10) and cylinder deactivation system to regenerate an exhaust aftertreatment device (60) for a multicylinder engine (5) that operates primarily at an air/fuel ratio that is lean of stoichiometry. The invention uses the cylinder deactivation system to control temperature and air/fuel ratio of an exhaust gas feedstream going into an aftertreatment device (60). The invention also increases the amount of fuel delivered to each activated cylinder by an amount sufficient to maintain operating power of the engine. The regeneration action includes describing NOx from a NOx adsorbed catalyst (64), desulfating the NOx adsorbed catalyst (64), and purging a diesel particulate trap (68).

IPC 1-7

F01N 3/00; F01L 1/34; F02B 77/00; F02D 7/00

IPC 8 full level

B60H 1/00 (2006.01); B60H 1/08 (2006.01); F01L 13/00 (2006.01); F01N 3/08 (2006.01); F02B 1/12 (2006.01); F02D 41/00 (2006.01); F02D 41/02 (2006.01); F02D 41/36 (2006.01); F01N 9/00 (2006.01); F01N 13/02 (2010.01); F02B 75/12 (2006.01)

CPC (source: EP)

F01L 13/0005 (2013.01); F01N 3/0814 (2013.01); F01N 3/0821 (2013.01); F01N 3/0842 (2013.01); F01N 3/0885 (2013.01); F01N 9/005 (2013.01); F01N 13/0097 (2014.06); F02B 1/12 (2013.01); F02D 41/0087 (2013.01); F02D 41/024 (2013.01); F02D 41/0275 (2013.01); F01N 2430/02 (2013.01); F01N 2570/04 (2013.01); F01P 2037/02 (2013.01); F01P 2060/08 (2013.01); F02B 2075/125 (2013.01); F02D 2250/36 (2013.01); Y02T 10/123 (2013.01); Y02T 10/26 (2013.01); Y02T 10/47 (2013.01)

Citation (search report)

See references of WO 03048533A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

DOCDB simple family (publication)

WO 03048533 A1 20030612; EP 1458958 A1 20040922

DOCDB simple family (application)

US 0237775 W 20021125; EP 02804444 A 20021125