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Method for operating a gas sensor element and device for carrying out said method

A sensor element, gas technology, applied in the structural details of gas analyzers, testing of machine/structural components, diagnostic devices of exhaust gas treatment devices, etc., can solve problems such as damage, wrong heating voltage, sensor element distortion, etc.

Active Publication Date: 2014-01-08
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A control, in particular a probe control, with, for example, an incorrect heating voltage and / or pump voltage can lead to distortions and / or damage to the sensor element in particular

Method used

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  • Method for operating a gas sensor element and device for carrying out said method
  • Method for operating a gas sensor element and device for carrying out said method

Examples

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Embodiment Construction

[0041] exist figure 1An embodiment of a device 110 according to the invention is shown in . The device 110 according to the invention for detecting at least one property of a gas in a measurement gas chamber 112 includes at least one sensor element 114 . Device 110 also has at least one controller 116 . Controller 116 is provided to carry out the method according to the invention for operating at least one sensor element 114 for detecting at least one property of the gas in measurement gas chamber 112 . In particular, sensor element 114 may be designed as a lambda probe. The sensor element 114 can be designed, for example, as a one-unit or multi-unit sensor element 114 . A cell 118 can be understood here as an arrangement of at least two electrodes 120 and a solid electrolyte 122 , for example. The solid electrolyte 122 may in particular be a ceramic solid electrolyte 122 , for example zirconium dioxide, in particular yttrium-stabilized zirconia (YSZ) and / or scandium-doped...

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PUM

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Abstract

The invention relates to the operation of at least one sensor element (114) for detecting at least one property of a gas in a measurement gas chamber (112). The method comprises at least the following steps: at least one first step, wherein at least one parameter is determined in the first step; at least one second step, wherein the parameter is compared to at least one comparison value in the second step, wherein at least one characteristic is allocated to the sensor element (114) or to at least a part of the sensor element (114) according to said comparison. The invention further relates to a device (110) for carrying out said method.

Description

Background technique [0001] Sensor elements for detecting at least one property of a gas in a measurement gas chamber are known from the prior art. In the following, the invention is described substantially with reference to a method and a device for quantitatively and / or qualitatively detecting at least one gas component in a measurement gas chamber, without limiting other possible configurations. For example, the gas may be the exhaust gas of an internal combustion engine, in particular in the motor vehicle sector, and the measuring gas chamber may be an exhaust gas, for example. Such sensor elements are described, for example, in "Sensoren im Kraftfahrzeug" by Robert Bosch GmbH (first edition, 2010, pp. 98-111 and pp. 160-165). In particular, exhaust gas sensors with different tasks can be involved. Known are, for example, oxygen jump sensors for measuring the oxygen content of the exhaust gas in the range of the air factor λ=1, for measuring the oxygen content of the exh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00
CPCG01N33/007G01N27/4175F01N11/00G01M15/102
Inventor L·迪尔E·赖莱恩J·施奈德F·斯坦格麦尔H·席希莱恩
Owner ROBERT BOSCH GMBH
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