EP 1277047 A1 20030122 - SENSOR ELEMENT OPERATED WITH A PRELIMINARY CATALYSIS
Title (en)
SENSOR ELEMENT OPERATED WITH A PRELIMINARY CATALYSIS
Title (de)
SENSORELEMENT MIT VORKATALYSE
Title (fr)
ELEMENT DETECTEUR AVEC PRE-CATALYSE
Publication
Application
Priority
- DE 0100985 W 20010315
- DE 10013882 A 20000321
Abstract (en)
[origin: WO0171333A1] The invention relates to a sensor element for determining the concentration of gas components in gaseous mixtures, especially in the exhaust gases of internal combustion engines. Said sensor element comprises at least one chamber for the gas to be measured (13) and at least one gas inlet (17) via which the gas mixture is fed to the chamber for the gas to be measured (13). The sensor element is further provided with a diffusion barrier (12) interposed between the gas inlet (17) and the chamber for the gas to be measured (13). The diffusion barrier (12) has at least one area (14, 14a, 16) that contains a catalytically active material for establishing the equilibrium in the gaseous mixture and is divided up into a coarse pored and a fine pored section.
IPC 1-7
IPC 8 full level
G01N 27/419 (2006.01); G01N 33/00 (2006.01)
CPC (source: EP KR US)
G01N 27/407 (2013.01 - KR); G01N 27/4072 (2013.01 - EP US); G01N 33/0013 (2013.01 - EP US)
Citation (search report)
See references of WO 0171333A1
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 0171333 A1 20010927; DE 10013882 A1 20011004; EP 1277047 A1 20030122; JP 2003528314 A 20030924; KR 20020086611 A 20021118; US 2003154764 A1 20030821
DOCDB simple family (application)
DE 0100985 W 20010315; DE 10013882 A 20000321; EP 01921199 A 20010315; JP 2001569269 A 20010315; KR 20027011669 A 20020906; US 23912103 A 20030124