EP 1990525 B1 20130710 - An engine system and method for adjustment in air/fuel ratio control in an engine system
Title (en)
An engine system and method for adjustment in air/fuel ratio control in an engine system
Title (de)
Motorensystem und Verfahren zur Anpassung des Luft-Brennstoff-Verhältnisses in einem Motorensystem
Title (fr)
Système de moteur et procédé pour le réglage de la commande du rapport air-combustible dans un système de moteur
Publication
Application
Priority
EP 07107648 A 20070507
Abstract (en)
[origin: EP1990525A1] The invention refers to an engine system (1) and a method in an engine system (1) comprising an internal combustion engine with at least one cylinder (2), and air control means (10) and/or fuel injection means (11), the engine system further comprising an exhaust gas treatment device (8), an upstream gas sensor (13), located upstream of the exhaust gas treatment device (8), and a downstream gas sensor (12), located downstream of, or at least partly within, the exhaust gas treatment device (8). The method comprises - determining (301, 302, 303), during a finite time period (t1-t2), a plurality of values of a control parameter (U12., U12Diff, C12) related to the downstream gas sensor (12), - determining (307), after the end of the finite time period (t1-t2), at least one value of an adjustment parameter (A 12) at least partly based on at least some of the control parameter values, and - adjusting (309) the control of the air control means (10) and/or the fuel injection means (11) at least partly based on at least one of the at least one adjustment parameter value.
IPC 8 full level
F02D 41/14 (2006.01); F01N 11/00 (2006.01); F02D 41/22 (2006.01)
CPC (source: EP)
F02D 41/1438 (2013.01); F02D 41/222 (2013.01); F01N 11/007 (2013.01)
Designated contracting state (EPC)
DE GB SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 07107648 A 20070507