High-temperature sensor for arrangement in a metal tube, especially inside the exhaust gas system of an internal combustion engine

A high-temperature sensor, metal tube technology, applied in the direction of temperature measurement in motors, diagnostic devices and instruments of exhaust gas treatment devices, etc., can solve problems such as rising costs

Inactive Publication Date: 2014-03-26
HELLA KG HUECK & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Coating with quartz glass filaments and subsequent embedding in an alumina powder filling requires corresponding manufacturing processes, which lead to corresponding cost increases in the production of high-temperature sensors

Method used

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  • High-temperature sensor for arrangement in a metal tube, especially inside the exhaust gas system of an internal combustion engine
  • High-temperature sensor for arrangement in a metal tube, especially inside the exhaust gas system of an internal combustion engine
  • High-temperature sensor for arrangement in a metal tube, especially inside the exhaust gas system of an internal combustion engine

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0021] exist figure 1 shows a cross-sectional view of a metal tube 1 into which a spacer 2 , 2 ′, 2 ″ is penetrated in the manner of a string of pearls, connected to each other by a contact wire 3 .

[0022] Depending on the length of the contact wire, the number of spacers of such a contact arrangement can be arbitrary, however, always at least two spacers form the contact arrangement.

[0023] Contact wires are connected to sensors (eg high temperature sensors) not shown here, the measured values ​​of which are supplied via the contact wires to electronics (not shown further), where the measured values ​​are evaluated.

[0024] The metal pipe 1 can be led, for example, through associated bores into the exhaust system of the internal combustion engine, in order to detect corresponding exhaust gas values ​​there by sensors located at the ends of the metal pipe.

[0025] The metal tube 1 is preferably made of chrome-nickel steel (eg Inconel 601), which is corrosion-resistant a...

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PUM

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Abstract

The invention relates to a high-temperature sensor comprising contact wires in a metal tube, preferably a bent metal tube for arrangement especially inside the exhaust gas system of an internal combustion engine, and spacer bodies distributed in rows along the contact wires so as to maintain the contact wires at a predetermined distance to the inner wall of the metal tube. According to the invention, every spacer body is approximately ovoid, the diameter of the center portion of the egg being not wider than the inside width of the as yet unbent metal tube. The spacer bodies are injection-molded polymer ceramic parts molded onto the contact wires.

Description

technical field [0001] The invention relates to a high-temperature sensor for being arranged, in particular inside the exhaust system of an internal combustion engine, with: a contact line in a metal tube, preferably in a curved metal tube; along the contact line in a row The spacers are distributed so as to maintain the contact line at a predetermined distance with respect to the inner wall of the metal tube. Background technique [0002] A temperature sensor is described in document DE 10 2005 030 643 A1. Document DE 102 11 029 A1 describes a temperature sensor. [0003] Internal combustion engines for vehicles (but also other internal combustion engines) have a plurality of high-temperature sensors for maintaining exhaust gas limit values ​​in the exhaust system of the internal combustion engine and also for protecting components. These high-temperature sensors are housed in associated metal tubes as so-called "contact assemblies". [0004] If the metal tube is to be b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/16G01K1/14
CPCG01K1/143F01N2560/06F01N11/002G01K2205/04
Inventor T·尼曼T·埃格斯
Owner HELLA KG HUECK & CO
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