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Production method of gas transducer

A gas sensor and manufacturing method technology, applied in the direction of instruments, scientific instruments, measuring devices, etc., can solve the problems of inability to realize the miniaturization of size and structure, high installation and manufacturing costs, and many parts, so as to achieve high application value and low installation and manufacturing costs , the effect of fewer parts

Active Publication Date: 2008-12-10
UNITED AUTOMOTIVE ELECTRONICS SYST
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0007] Gas sensors with this structure, on the one hand, have relatively high installation and manufacturing costs, and on the other hand, there are many parts, which makes it impossible to miniaturize the size and structure

Method used

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  • Production method of gas transducer
  • Production method of gas transducer
  • Production method of gas transducer

Examples

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Embodiment Construction

[0037] Such as Figure 8 As shown, the gas sensor manufactured by the present invention includes a short sensor 10, a spring clip 20, and a wire harness assembly 30;

[0038] Such as image 3 , Figure 4 As shown, the short sensor 10 includes a metal protective cover 11, a metal sensor seat 12, an exhaust side bushing 13, a seal 14, a reference side bushing 16, and a ceramic sensing element 17;

[0039] The protective cover 11 includes an extension part 112 , a fixing part 113 , and an umbrella part 114 . The outer diameter of the fixing part 113 is larger than that of the extension part 112 . The outer surface of the fixing part 113 and the inner surface of the top of the sensor seat 12 are interference fit.

[0040] The protective cover 11 is fixed on the top of the sensor base 12 through the fixing portion 113 , the extension 112 of the protection cover 11 protrudes from the top of the sensor base 12 , and the extension 112 is provided with a plurality of through holes 11...

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Abstract

The invention discloses a manufacturing method of a gas sensor. The gas sensor is made with the following steps: the first step is to respectively assemble a short sensor (10) and a wiring harness component (30); the second step is to fit the short sensor (10) to a spring caliper (20); the third step is to connect the spring base (32) of the wiring harness component (30) with the spring caliper (20) and arrange the sensing element (17) of the short sensor (10) on the wiring harness component (30); the forth step is to connect the wiring harness component (30) with the short sensor (10); the fifth step is to fix the wiring harness component (30) on the short sensor (10). The manufacturing method successfully solves the connecting problem of a ceramic sensing element with a metal terminal. The solving proposal is provided with great cost advantage. The gas sensor made through the invention has the advantages of fewer parts, lower installing and manufacturing cost, easy realization of size structure miniaturization and great application value.

Description

technical field [0001] The invention relates to a method for manufacturing electrical parts for an internal combustion engine, in particular to a method for manufacturing a gas sensor. Background technique [0002] Gas sensors, such as oxygen sensors, are important components in the engine management system. They are installed in the exhaust system of the internal combustion engine to sense the concentration of oxygen in the exhaust gas and realize the emission control of pollutants. The oxygen sensor is installed in the exhaust system of the engine, the working environment is relatively harsh, and the temperature and mechanical stress are relatively high during the service life. Therefore, stable and reliable mechanical design becomes the key to the success of the oxygen sensor design. [0003] In the existing Nernst galvanic oxygen sensor, the inner electrode needs to provide a standard reference cavity, which is generally the atmosphere. The oxygen partial pressure of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/409
Inventor 杨玉海张笑冬杨曾
Owner UNITED AUTOMOTIVE ELECTRONICS SYST
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