Method for positioning a measuring sensor in a honeycomb body, corresponding honeycomb body, and motor vehicle
First Claim
1. A method for positioning a measuring sensor in a honeycomb body having cavities to be at least partially traversed by an exhaust gas, which comprises the steps of:
- positioning the measuring sensor in a region of the honeycomb body at which, in operation of the honeycomb body in an exhaust system of a motor vehicle, a minimum of a hydrogen concentration is present.
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Accused Products
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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Citations
18 Claims
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1. A method for positioning a measuring sensor in a honeycomb body having cavities to be at least partially traversed by an exhaust gas, which comprises the steps of:
positioning the measuring sensor in a region of the honeycomb body at which, in operation of the honeycomb body in an exhaust system of a motor vehicle, a minimum of a hydrogen concentration is present. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A honeycomb body, comprising:
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a honeycomb structure having cavities formed therein for being at least partially traversed by an exhaust gas; and a measuring sensor being disposed in a region of said honeycomb structure at which, in operation of the honeycomb body in an exhaust system of a motor vehicle, at least one minimum of a hydrogen concentration is present. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A motor vehicle, comprising:
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a honeycomb body having cavities formed therein to be at least partially traversed by an exhaust gas; and a measuring sensor being disposed in a region of said honeycomb body at which, in operation of said honeycomb body in an exhaust system of a motor vehicle, at least one minimum of a hydrogen concentration is present.
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Specification