Global Patent Index - EP 1422410 A3

EP 1422410 A3 20041215 - Method for operating a multi-cylinder internal combustion engine with NOx-catalyst

Title (en)

Method for operating a multi-cylinder internal combustion engine with NOx-catalyst

Title (de)

Verfahren zum Betreiben einer mehrzylindrigen Brennkraftmaschine mit einem NOx-Speicherkatalysator

Title (fr)

Procédé de gestion du fonctionnement d'un moteur à combustion interne multi-cylindres avec catalysateur d'accumulation de NOx

Publication

EP 1422410 A3 20041215 (DE)

Application

EP 03015856 A 20030711

Priority

DE 10254683 A 20021122

Abstract (en)

[origin: EP1422410A2] Process for operating a multi-cylinder IC engine comprises not allowing a lambda degree of effectiveness of the cylinders of the engine operating with a lean or stoichiometric air-fuel ratio to exceed a prescribed gradient during the transition from the normal operation to the heating region or from the heating region into the normal region. Independent claims are also included for the following: (1) Control device used in the above process; and (2) Computer program which can be loaded on a microprocessor.

IPC 1-7

F02D 41/02; F02D 41/34

IPC 8 full level

F01N 3/08 (2006.01); F02D 41/00 (2006.01); F02D 41/02 (2006.01); F02D 41/34 (2006.01); F01N 13/02 (2010.01); F01N 13/04 (2010.01); F02D 41/14 (2006.01)

CPC (source: EP)

F01N 3/0814 (2013.01); F01N 3/0842 (2013.01); F01N 3/0885 (2013.01); F01N 13/009 (2014.06); F01N 13/011 (2014.06); F02D 41/0082 (2013.01); F02D 41/028 (2013.01); F01N 2570/04 (2013.01); F02D 41/1454 (2013.01); F02D 2250/21 (2013.01)

Citation (search report)

Designated contracting state (EPC)

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

DOCDB simple family (publication)

EP 1422410 A2 20040526; EP 1422410 A3 20041215; EP 1422410 B1 20190522; DE 10254683 A1 20040603

DOCDB simple family (application)

EP 03015856 A 20030711; DE 10254683 A 20021122