EP 2336532 A3 20140618 - Method for detecting the readiness of a lambda probe for functions in selected operating phases
Title (en)
Method for detecting the readiness of a lambda probe for functions in selected operating phases
Title (de)
Verfahren zur Erkennung der Betriebsbereitschaft einer Lambda-Sonde für Funktionen in ausgewählten Betriebsphasen
Title (fr)
Procédé de reconnaissance de la capacité de fonctionnement d'une sonde lambda pour des fonctions dans des phases de fonctionnement sélectionnées
Publication
Application
Priority
DE 102009054751 A 20091216
Abstract (en)
[origin: EP2336532A2] The method involves determining the time gradient of the sensor signal which characterizes the oxygen concentration. The time gradient is determined during a transition of a combustion engine (110) from an operational phase into a selected operational phase. The operational availability of a lambda sensor (130), for functions in the selected operational phase of the combustion engine, does not exist when the time gradient goes against zero. Independent claims are also included for the following: (1) a method for detecting the gas permeability of a lambda sensor surrounding protective tube; (2) a computer program; and (3) a computer program product.
IPC 8 full level
F02D 41/12 (2006.01); F02D 41/14 (2006.01); F02D 41/24 (2006.01)
CPC (source: EP)
F02D 41/123 (2013.01); F02D 41/1495 (2013.01); F02D 41/2441 (2013.01); F02D 41/2454 (2013.01); F02D 41/1454 (2013.01); F02D 41/2474 (2013.01)
Citation (search report)
- [X] EP 1748173 A2 20070131 - DENSO CORP [JP]
- [X] EP 1048834 A2 20001102 - SIEMENS AG [DE]
- [X] EP 1961942 A2 20080827 - NGK SPARK PLUG CO [JP], et al
- [I] DE 19548071 A1 19960704 - NIPPON DENSO CO [JP]
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)
EP 2336532 A2 20110622; EP 2336532 A3 20140618; CN 102102593 A 20110622; CN 102102593 B 20151021; DE 102009054751 A1 20110622; DE 102009054751 B4 20220303
DOCDB simple family (application)
EP 10193702 A 20101203; CN 201010589221 A 20101215; DE 102009054751 A 20091216