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Method for operating at least three sensors for verifying proportion of measurement gas component having bound oxygen in measurement gas

A technology of gas components and sensors, applied in the field of sensor systems, can solve problems such as difficult operation, increase variety of variants, increase manufacturing costs, etc., and achieve the effect of improving resolution

Active Publication Date: 2019-07-16
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this has the disadvantage that the sensor contains a separate type part number, which increases variant diversity and makes handling difficult
However, this requires additional components on the circuit and thus increases manufacturing costs

Method used

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  • Method for operating at least three sensors for verifying proportion of measurement gas component having bound oxygen in measurement gas
  • Method for operating at least three sensors for verifying proportion of measurement gas component having bound oxygen in measurement gas

Examples

Experimental program
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Embodiment Construction

[0033] figure 1 The basic structure of the sensor system 10 according to the invention is shown. The sensor system 10 comprises at least three sensors 12 , 14 , 16 , a supply voltage source 18 and an electronic control unit 20 . The sensors 12 , 14 , 16 are designed to verify the presence of bound oxygen (hereinafter referred to for example as nitrogen oxides NO x ) of at least one fraction of the measured gas composition. In the following, the three sensors 12, 14, 16 are also referred to as the first sensor 12, the second sensor 14 and the third sensor 16, but no definite weight or meaning is assigned to these sensors, but only conceptually differentiated . The sensors 12 , 14 , 16 are arranged, for example, in an exhaust system 22 of an internal combustion engine (not shown further), for example an internal combustion engine of a motor vehicle. The three sensors 12 , 14 , 16 are connected to a supply voltage source 18 via lines 24 , 26 , 28 respectively. The supply vol...

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PUM

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Abstract

A method for operating at least three sensors (12, 14, 16) for verifying at least one proportion of a measurement gas component having bound oxygen in a measurement gas is proposed. The method comprises the following steps: connecting the three sensors (12, 14, 16) to a supply voltage source (18); connecting the three sensors (12, 14, 16) to a control device (20) by means of a CAN line (30); requesting the three sensors (12, 14, 16) for information about the supply voltage applied to the three sensors (12, 14, 16); and determining the mounting position of the three sensors (12, 14, 16) relative to the supply voltage source (18) on the basis of the information.

Description

technical field [0001] The invention relates to a method for operating at least three sensors for verifying at least one fraction of a measurement gas component with bound oxygen in a measurement gas. The invention also relates to a computer program, an electronic storage medium, an electronic control device and a sensor system. Background technique [0002] Various methods and sensors are known from the prior art for authenticating gas mixtures in the presence of oxygen molecules by detecting the fraction of oxygen produced by the reduction of the measured gas component with bound oxygen ( In particular the exhaust gas of an internal combustion engine) has at least one fraction of the measured gas composition with bound oxygen. [0003] EP 0 769 693A1 discloses a method and a NO x sensor, the method and the NO x The sensor is used to detect nitrogen oxides NO in oxygen molecules, especially by means of catalytic converters suitable for this purpose. x At least one fract...

Claims

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Application Information

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IPC IPC(8): G01N27/407
CPCG01N27/4072G01N27/407G01N27/4163F02D41/146F02D41/1441F02D2041/285F01N2560/14
Inventor A-K·布格尔M·瓦尔多夫
Owner ROBERT BOSCH GMBH