EP 2786001 A1 20141008 - METHOD AND APPARATUS FOR CONTROLLING A FUEL CONTROLLER
Title (en)
METHOD AND APPARATUS FOR CONTROLLING A FUEL CONTROLLER
Title (de)
VERFAHREN UND VORRICHTUNG ZUM STEUERN EINES KRAFTSTOFFREGELERS
Title (fr)
PROCÉDÉ ET APPAREIL POUR CONTRÔLER UN CONTRÔLEUR DE CARBURANT
Publication
Application
Priority
- DE 102011087300 A 20111129
- EP 2012073473 W 20121123
Abstract (en)
[origin: WO2013079406A1] The invention relates to a method for operating an internal combustion engine (10). According to the method, an exhaust gas produced by the internal combustion engine (10) is conducted across a 3-way catalytic converter (20) arranged in the exhaust duct (16). A lambda probe (26) detects a value characteristic of an exhaust-gas lambda number upstream of the 3-way catalytic converter (20), and transmits said value to an engine control unit (28) with an integrated regulator. By means of the regulator of the engine control unit (28), through the specification of a lambda setpoint value, a mean exhaust-gas lambda number (lambdam) is set, and the mean exhaust-gas lambda number (lambdam) is, with predefined periodic setpoint value variation, deflected alternately in the direction of a lean lambda number and a rich lambda number (lambda modulation). Upon the transition in the direction of the lean lambda number or upon the transition in the direction of the rich lambda number, at a time (t1) at which a probe signal of the lambda probe (26) reaches a predefined threshold value (lambdas), a regulator deviation (DeltaR) between a present regulator actual value (R1) and a present regulator setpoint value is formed, and a new regulator setpoint value (R2) is determined by adding two times the regulator deviation (DeltaR) to the present regulator actual value (R1).
IPC 8 full level
F02D 41/14 (2006.01)
CPC (source: EP)
F02D 41/1454 (2013.01); F02D 41/1483 (2013.01); F02D 41/1489 (2013.01); F02D 2041/1422 (2013.01)
Citation (search report)
See references of WO 2013079406A1
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
DOCDB simple family (publication)
DE 102011087300 A1 20130529; EP 2786001 A1 20141008; EP 2786001 B1 20150722; WO 2013079406 A1 20130606; WO 2013079406 A8 20131031
DOCDB simple family (application)
DE 102011087300 A 20111129; EP 12794925 A 20121123; EP 2012073473 W 20121123