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Method for producing a sensor element for detecting at least one property of a measurement gas in a measurement gas space

A sensor element and gas space technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of affecting the heating characteristics of sensor elements, affecting the function of oxygen content sensor, changing the plasma sputtering layer, etc., to achieve fast detection function and improve Dynamic regulation, the effect of increasing the service life

Active Publication Date: 2020-09-08
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, a thick thermal shock protection layer reliably protects against water hammer, but as an additional substance adversely affects the heating behavior of the sensor element
In addition, thermal aging changes the open porosity of the plasma-sputtered layer, thereby affecting the function of the oxygen sensor

Method used

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  • Method for producing a sensor element for detecting at least one property of a measurement gas in a measurement gas space
  • Method for producing a sensor element for detecting at least one property of a measurement gas in a measurement gas space

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Embodiment Construction

[0029] exist figure 1 The sensor element 10 shown in can be used to verify physical and / or chemical properties of a measured gas, wherein one or more properties can be detected. The invention is described below in particular on the basis of the qualitative and / or quantitative detection of the gas components of the gas, in particular the detection of the oxygen content in the measurement gas. The oxygen content can be detected, for example, in the form of partial pressure and / or in the form of a percentage. In principle, however, it is also possible to detect other forms of gas components, for example nitrogen oxides, hydrocarbons and / or hydrogen. Alternatively or additionally, however, other properties of the measurement gas, such as temperature or pressure, can also be detected. The invention can be used in particular in the field of motor vehicle technology, whereby gas spaces, in particular exhaust pipes of internal combustion engines, are measured, and gases, in particul...

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Abstract

The invention relates to a method for producing a sensor element (10) for detecting at least one property of gas in a measurement gas space. The sensor element (10) can be used to measure the content and temperature of a gas component. The method comprises the following steps: preparing solid electrolyte (12) comprising at least one functional element (14,16,18), preparing suspension comprising at least ceramic filler and at least one raw material parent body, and painting at least one first layer of suspension on the solid electrolyte (12) in sections.

Description

technical field [0001] Numerous sensor elements and methods for detecting at least one property of a measurement gas in a measurement gas space are known from the prior art. In principle, this can be any desired physical and / or chemical measured gas property of the measured gas, wherein one or more properties can be detected. The invention is described below in particular on the basis of the qualitative and / or quantitative detection of the gas component content of the measurement gas, in particular the detection of the oxygen content in the measurement gas. The oxygen content can be detected, for example, as partial pressure and / or as a percentage. Alternatively or additionally, however, it is also possible to detect other properties of the measurement gas, for example the temperature. Background technique [0002] For example, such a sensor element can be formed, for example, by a so-called oxygen content sensor (lambda sensor), such a sensor is known, for example, from K...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/407
CPCG01N27/4073
Inventor C.沃尔夫M.皮旺斯基
Owner ROBERT BOSCH GMBH