EP 4158325 A1 20230405 - SENSOR ELEMENT FOR AN EXHAUST GAS SENSOR
Title (en)
SENSOR ELEMENT FOR AN EXHAUST GAS SENSOR
Title (de)
SENSORELEMENT FÜR EINEN ABGASSENSOR
Title (fr)
ÉLÉMENT DE DÉTECTION POUR CAPTEUR DE GAZ D'ÉCHAPPEMENT
Publication
Application
Priority
- DE 102020206666 A 20200528
- EP 2021061670 W 20210504
Abstract (en)
[origin: WO2021239405A1] The invention relates to a ceramic sensor element for an exhaust gas sensor, extending from an exhaust gas-side end region (201) to a connection-side end region (202) in the longitudinal direction. The exhaust gas-side end region (201) is equipped with a functional element (31) which is connected to a contact surface (43, 44, 45, 46) via a conductor track (320, 221, 222, 328), said contact surface being arranged on the outer surface of the sensor element (20) in the connection-side end region (202). The contact surface (43, 44, 45, 46) has an inner layer (43', 44', 45', 46') and an outer layer (43'', 44'', 45'', 46'') arranged thereon. The inner layer (43', 44', 45', 46') has a higher degree of hardness and/or a smaller content of precious metal than the outer layer (43'', 44'', 45'', 46'') and is only partly covered by the outer layer (43'', 44'', 45'', 46'').
IPC 8 full level
G01N 27/406 (2006.01); G01N 27/407 (2006.01)
CPC (source: EP)
G01N 27/4075 (2013.01)
Citation (search report)
See references of WO 2021239405A1
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)
DE 102020206666 A1 20211202; CN 115698694 A 20230203; EP 4158325 A1 20230405; WO 2021239405 A1 20211202
DOCDB simple family (application)
DE 102020206666 A 20200528; CN 202180038661 A 20210504; EP 2021061670 W 20210504; EP 21725058 A 20210504