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US 8,282,798 B2Granted
Gas probe with hygroscopically coated protective device, method of producing a gas probe and exhaust gas purification component and vehicle having a gas probe
AssigneesEMITEC Gesellschaft fuer Emissionstechnologie mbH, Audi AG
InventorsRolf Brück, Bernhard Pfalzgraf, Bodo Odendall
Life of this patent
Estimating the term…
Abstract
A gas probe, in particular a lambda probe for the analysis of exhaust gases from a mobile internal combustion engine, includes at least one protective device, at least partly surrounding a sensitive sensor element of the gas probe, which comes into contact with a gas. The at least one protective device includes a gas contact face which at least partly has a hygroscopic surface.
Claims12
A gas probe, comprising:
- a sensitive sensor element configured to come into contact with a gas;
- at least one protective device at least regionally surrounding said sensitive sensor element, said at least one protective device including a gas contact face at least partially having a first hygroscopic surface;
- and
- a base body configured for coming into contact with the gas and at least partially having a second hygroscopic surface, said base body constituting a receptacle for said sensitive sensor element and said base body having an outer periphery with a thread for fixing the gas probe in a housing or in an exhaust system;
- said first hygroscopic surface and said second hygroscopic surface being formed at least partially with respective first and second hygroscopic coatings.
2 more elements
A lambda probe for analyzing exhaust gases of a mobile internal combustion engine, the lambda probe comprising:
- a sensitive sensor element configured to come into contact with the exhaust gases;
- at least one protective device at least regionally surrounding said sensitive sensor element, said at least one protective device including an exhaust gas contact face at least partially having a first hygroscopic surface;
- and
- a base body configured for coming into contact with the gas and at least partially having a second hygroscopic surface, said base body constituting a receptacle for said sensitive sensor element and said base having an outer periphery with a thread for fixing the lambda probe in a housing or in an exhaust system;
- said first hygroscopic surface and said second hygroscopic surface being formed at least partially with respective first and second hygroscopic coatings.
2 more elements
Dependencies are inferred from the claim text.