EP 1563178 A1 20050817 - METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE OF A VEHICLE, IN PARTICULAR A MOTOR VEHICLE
Title (en)
METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE OF A VEHICLE, IN PARTICULAR A MOTOR VEHICLE
Title (de)
VERFAHREN ZUM BETREIBEN EINER BRENNKRAFTMASCHINE EINES FAHRZEUGS, INSBESONDERE EINES KRAFTFAHRZEUGES
Title (fr)
MODE DE FONCTIONNEMENT D'UN MOTEUR A COMBUSTION INTERNE D'UN VEHICULE, NOTAMMENT D'UN VEHICULE AUTOMOBILE
Publication
Application
Priority
- DE 10253614 A 20021115
- EP 0312112 W 20031031
Abstract (en)
[origin: WO2004046529A1] The invention relates to a method for operating an internal combustion engine of a vehicle, in particular a motor vehicle. Said method comprises a first operating range that represents a lean-operation range, whereby the operation switches from a lean-operation to a rich operation range by means of an engine control device in order to discharge the nitrogen oxide accumulator catalyst. According to the invention, the engine control device blocks a switch to the lean-operation range, if the higher fuel-consumption quantity for discharging the catalyst over a predefinable evaluation period, extending over several lean-operation phases, is identical to or greater than the lower fuel-consumption quantity, consumed by a lean operation in said monitoring period. The lower fuel-consumption quantity is determined as a function of a raw nitrogen-oxide mass flow value, averaged over the evaluation period, as a function of a fuel economy quantity, averaged over said period and achieved in the lean-operation phases that fall in said evaluation period in relation to the homogeneous operating range phases in said evaluation period and as a function of the time, averaged over the evaluation period, between two torque requests that exceed a predefinable load and/or speed threshold value and require a switch from the lean-operation range. The higher fuel-consumption quantity is determined as a function of a charged state of the accumulator catalyst, averaged over the evaluation period.
IPC 1-7
IPC 8 full level
F02D 41/02 (2006.01); F02D 41/30 (2006.01); F01N 3/08 (2006.01)
CPC (source: EP US)
F01N 3/0842 (2013.01 - EP US); F02D 41/0275 (2013.01 - EP US); F02D 41/3076 (2013.01 - EP US); F01N 3/0814 (2013.01 - EP US); F02D 41/3029 (2013.01 - EP US); F02D 2200/0625 (2013.01 - EP US)
Citation (search report)
See references of WO 2004046529A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 2004046529 A1 20040603; AU 2003283332 A1 20040615; DE 10253614 A1 20040603; DE 10253614 B4 20081224; DE 50313079 D1 20101021; EP 1563178 A1 20050817; EP 1563178 B1 20100908; US 2006162319 A1 20060727; US 7100363 B2 20060905
DOCDB simple family (application)
EP 0312112 W 20031031; AU 2003283332 A 20031031; DE 10253614 A 20021115; DE 50313079 T 20031031; EP 03775271 A 20031031; US 53498005 A 20051102