Measuring and testing – Gas analysis – Gas of combustion
Reexamination Certificate
2007-08-13
2008-08-19
Cygan, Michael (Department: 2855)
Measuring and testing
Gas analysis
Gas of combustion
Reexamination Certificate
active
07412873
ABSTRACT:
A method positions a sensor in a honeycomb body which is provided with hollow spaces that can be penetrated at least in part by an exhaust gas. The sensor is placed in an area of the honeycomb body in which at least one minimum hydrogen concentration occurs when the honeycomb body is operated in the emission system of a motor vehicle. The sensor positioning method allows the sensor to be placed in the honeycomb body in such a way that systematic errors that occur are kept as small as possible as a result of an inherent transverse sensitivity of the sensor to hydrogen. This applies especially to lambda probes. A honeycomb body contains the sensor which is placed so as to supply particularly reliable test data whose systematic error is as small as possible.
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Althöfer Kait
Brück Rolf
Hirth Peter
Cygan Michael
Emitec Gesellschaft fuer Emissions-technologie mbH
Greenberg Laurence A.
Locher Ralph E.
Stemer Werner H.
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