EP 4119778 A1 20230118 - METHOD FOR MONITORING THE FUNCTION OF AN ELECTRICALLY HEATABLE CATALYST
Title (en)
METHOD FOR MONITORING THE FUNCTION OF AN ELECTRICALLY HEATABLE CATALYST
Title (de)
VERFAHREN ZUR ÜBERWACHUNG DER FUNKTION EINES ELEKTRISCH ERWÄRMBAREN KATALYSATORS
Title (fr)
PROCÉDÉ DE SURVEILLANCE DE FONCTION DE CATALYSEUR POUVANT ÊTRE CHAUFFÉ ÉLECTRIQUEMENT
Publication
Application
Priority
EP 21465535 A 20210712
Abstract (en)
The invention relates to a method for monitoring the function of an electrically heatable catalytic converter, comprising a metallic honeycomb body with a multitude of flow channels, through which an exhaust gas can flow from an inlet side to an outlet side, with the honey comb body being electrically connected to a power source, through which the honeycomb body can be heated by using the ohmic resistance of the honeycomb body, with a control unit that is set up to measure a voltage and a current, whereby the control unit is used to measure the current and the voltage supplied to the honeycomb body at two different points with known boundary conditions and comparing the measurements with prestored values.
IPC 8 full level
CPC (source: EP)
F01N 3/2026 (2013.01); F01N 3/2807 (2013.01); F01N 2240/16 (2013.01); F01N 2550/22 (2013.01); F01N 2900/0602 (2013.01)
Citation (search report)
- [XY] US 2011268613 A1 20111103 - HIRAI TARO [JP], et al
- [Y] US 2019331015 A1 20191031 - NAUMANN HARDY [DE], et al
- [Y] US 2014182272 A1 20140703 - CZIMMEK PERRY ROBERT [US], et al
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
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DOCDB simple family (application)
EP 21465535 A 20210712