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Heating elements for gas sensors

A sensor element, heating element technology, applied in the direction of heating element materials, electrical elements, ohmic resistance heating, etc.

Inactive Publication Date: 2017-08-08
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, additional challenges arise in terms of sealing the heating element

Method used

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  • Heating elements for gas sensors
  • Heating elements for gas sensors
  • Heating elements for gas sensors

Examples

Experimental program
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Embodiment Construction

[0025] exist Figures 1 to 3 Various embodiments of a sensor element 110 according to the invention and different embodiments of a heating element 112 according to the invention for detecting at least one property of a gas in a measurement gas chamber are shown in FIG. The entire sensor element 110 is here Figures 1 to 3 are only schematically and partially represented in . For example, it can be a sensor element according to the above-mentioned prior art, for example a sensor element for detecting at least one content of a gas component in the measurement gas chamber. The invention is generally preferably used in automotive sensors, for example for detecting one or more gas contents of one or more gas components in the exhaust gas of an internal combustion engine. For example, the invention can thus be used for oxygen sensors or NOx sensors. With regard to possible configurations of the sensor 110—with the exception of the configuration of the heating element described belo...

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Abstract

Proposed are a sensor element (110) and a heating element (112), in particular for use in a sensor element (110). The sensor element (110) can be adapted in particular for capturing at least one property of a gas in a measurement gas space. The heating element (112) comprises at least two contact elements (120) and at least two heating paths (126, 128) to which a heating current can be applied via the contact elements (120). The heating element (112) is configured such that, at at least two different temperatures, a total current, provided via the contact elements (120), is divided differently over the heating paths (126, 128).

Description

Background technique [0001] It is known from the background art that many elements and components possess one or more heating elements, eg integrated heating elements, for generating one or more operating temperatures. The invention is explained below with the aid of a heating element arranged in a sensor element for detecting at least one property of a gas in a measuring gas chamber, without restricting other possible designs and applications. In particular, the sensor element may be a sensor element for measuring the mass and / or content of a gas in a gas chamber, in particular, for example, a ceramic sensor element with one or more functional ceramics. Examples of sensor elements of this type, but the invention is not limited thereto, are those in which at least two electrodes are arranged, wherein the electrodes are passed through at least one solid electrolyte, in particular a ceramic solid electrolyte, such as , zirconia, especially yttrium-stabilized zirconia or scandiu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/406H05B3/10G01N27/12
CPCG01N27/4067G01N27/123H05B3/26H05B2203/003H05B2203/013H05B2203/037
Inventor H·京舍尔C·彼得斯
Owner ROBERT BOSCH GMBH