EP 4031759 A1 20220727 - METHOD FOR ADJUSTING RICHNESS IN A CONTROLLED-IGNITION INTERNAL COMBUSTION ENGINE
Title (en)
METHOD FOR ADJUSTING RICHNESS IN A CONTROLLED-IGNITION INTERNAL COMBUSTION ENGINE
Title (de)
VERFAHREN ZUR EINSTELLUNG DER FETTHEIT IN EINEM VERBRENNUNGSMOTOR MIT KONTROLLIERTER ZÜNDUNG
Title (fr)
PROCEDE DE REGLAGE DE LA RICHESSE D'UN MOTEUR A COMBUSTION INTERNE A ALLUMAGE COMMANDE
Publication
Application
Priority
- FR 1910314 A 20190919
- EP 2020075016 W 20200908
Abstract (en)
[origin: WO2021052808A1] A method is proposed for adjusting richness in an internal combustion engine equipped with a catalytic converter. The richness is adjusted by a first closed-loop controller to a setpoint (Cλ) which is continuously corrected by a second controller depending on the deviations between a calculated oxygen quantity value (OS) and an oxygen store setpoint value (OSc). The setpoint (OSc) is defined, for each value of the gas flow rate (Qech) crossing the catalytic converter and of the temperature (Tcat) of said catalytic converter, within a range between a minimum and a maximum oxygen quantity threshold (OSmin, OSmax); when these thresholds are exceeded this corresponds, respectively, to an onset of a leakage of carbon monoxide or nitrogen oxides.
IPC 8 full level
F02D 41/14 (2006.01); F01N 3/10 (2006.01); F02D 41/02 (2006.01); F02D 41/18 (2006.01)
CPC (source: EP)
F02D 41/0295 (2013.01); F02D 41/1401 (2013.01); F02D 41/1441 (2013.01); F02D 41/1454 (2013.01); F02D 41/1456 (2013.01); F02D 41/1475 (2013.01); F02D 41/1493 (2013.01); F02D 41/182 (2013.01); F02D 2041/1419 (2013.01); F02D 2200/0614 (2013.01); F02D 2200/0802 (2013.01); F02D 2200/0814 (2013.01); F02D 2200/0816 (2013.01)
Citation (search report)
See references of WO 2021052808A1
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
DOCDB simple family (publication)
WO 2021052808 A1 20210325; EP 4031759 A1 20220727; FR 3101110 A1 20210326; FR 3101110 B1 20220304
DOCDB simple family (application)
EP 2020075016 W 20200908; EP 20765302 A 20200908; FR 1910314 A 20190919