EP 4314519 A1 20240207 - METHOD FOR ADJUSTING AN OXYGEN FLUSHING MASS OF A CATALYTIC CONVERTER AND FOR CONTROLLING AN AIR-FUEL RATIO OF AN INTERNAL COMBUSTION ENGINE TAKING INTO ACCOUNT THE DETECTED OXYGEN FLUSHING MASS
Title (en)
METHOD FOR ADJUSTING AN OXYGEN FLUSHING MASS OF A CATALYTIC CONVERTER AND FOR CONTROLLING AN AIR-FUEL RATIO OF AN INTERNAL COMBUSTION ENGINE TAKING INTO ACCOUNT THE DETECTED OXYGEN FLUSHING MASS
Title (de)
VERFAHREN ZUM EINSTELLEN EINER SAUERSTOFFSPÜLMASSE EINES KATALYSATORS UND ZUR STEUERUNG EINES LUFT-KRAFTSTOFFVERHÄLTNISSES EINES VERBRENNUNGSMOTORS UNTER BERÜCKSICHTIGUNG DER ERFASSTEN SAUERSTOFFSPÜLMASSE
Title (fr)
PROCÉDÉ POUR AJUSTER UNE MASSE DE RINÇAGE À L'OXYGÈNE D'UN CONVERTISSEUR CATALYTIQUE ET POUR COMMANDER UN RAPPORT DU MÉLANGE AIR-CARBURANT D'UN MOTEUR À COMBUSTION INTERNE EN TENANT COMPTE DE LA MASSE DE RINÇAGE À L'OXYGÈNE DÉTECTÉE
Publication
Application
Priority
- DE 102021203184 A 20210330
- EP 2022052724 W 20220204
Abstract (en)
[origin: WO2022207162A1] The invention relates to a method for adjusting an oxygen flushing mass of a catalytic converter (11) and for controlling an air-fuel ratio AFR of an internal combustion engine (10), comprising the steps: i. calculating an oxygen flushing mass O5 from a quantity of air flowing into the internal combustion engine (10) and a quantity of fuel flowing into the internal combustion engine (10) and by forming an integral from an increase in a quantity of oxygen stored in the catalytic converter (11) from a point in time t1 at which an air-fuel ratio AFR begins to lean until a point in time t2 at which an oxygen content measured by a lambda sensor (13) arranged downstream of the catalytic converter (11) exceeds a limit value, and ii. performing a catalytic converter flushing process by enriching the air-fuel ratio AFR, taking into account the calculated oxygen flushing mass O5.
IPC 8 full level
F02D 41/02 (2006.01); F02D 41/14 (2006.01)
CPC (source: EP)
F01N 3/101 (2013.01); F01N 9/00 (2013.01); F01N 11/007 (2013.01); F02D 41/0295 (2013.01); F02D 41/1441 (2013.01); F02D 41/1475 (2013.01); F01N 2430/06 (2013.01); F01N 2550/02 (2013.01); F01N 2560/025 (2013.01); F01N 2560/14 (2013.01); F01N 2900/1402 (2013.01); F01N 2900/1624 (2013.01); F02D 41/1456 (2013.01); F02D 2200/0814 (2013.01); F02D 2200/0816 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DE 102021203184 A1 20221006; CN 116997709 A 20231103; EP 4314519 A1 20240207; WO 2022207162 A1 20221006
DOCDB simple family (application)
DE 102021203184 A 20210330; CN 202280022520 A 20220204; EP 2022052724 W 20220204; EP 22708416 A 20220204