Inlaid plate-shaped oxygen sensor and preparation method thereof

An oxygen sensor and mosaic technology, applied in the field of mosaic plate oxygen sensor and its preparation, can solve the problems of high material cost, slow response speed, complex structure, etc., so as to improve high temperature insulation performance, prolong service life and reduce energy. consumption and production costs

Inactive Publication Date: 2012-08-15
CHANGZHOU LAMBDA ELECTRONICS
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AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the existing zirconia oxygen sensor products, such as large size, complex structure, slow response speed and high material cost, the present invention provides a mosaic plate-shaped oxygen sensor and its preparation method

Method used

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  • Inlaid plate-shaped oxygen sensor and preparation method thereof
  • Inlaid plate-shaped oxygen sensor and preparation method thereof
  • Inlaid plate-shaped oxygen sensor and preparation method thereof

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preparation example Construction

[0029] A method for preparing a mosaic plate-shaped oxygen sensor, the preparation method comprising the following steps:

[0030] 1. The ceramic heater 1 is based on sintered and dense 95 alumina ceramics, and a groove 12 is opened on the surface of the alumina substrate 11, such as Figure 4 shown;

[0031] 2. Print the heating circuit 4 on the lower surface of the aluminum oxide substrate 11 with grooves 12 using a thick film screen printing process, print the glass glaze insulating layer 9 on the front of the heating circuit 4, and expose the rear to form two heating circuit pins 10, and then sintered in the air at 1200°C, and after cooling in the furnace, the heating circuit 4, the glass glaze insulating layer 9 and the alumina substrate 11 are tightly combined to form a whole, as in figure 2 shown;

[0032] 3. The zirconia sensitive element 2 is a strip-shaped sheet made of sintered dense 5-mole yttrium-stabilized zirconia as a matrix, and the thickness of the sheet i...

Embodiment

[0041] 1. Preparation of glass glaze powder: Accurately weigh each material according to the weight ratio of alumina: zirconia: silicon oxide: lithium oxide: bismuth oxide: zinc oxide = 29:27:32:4:5:3, add 50% water, using zirconia balls as the grinding medium, using a stirring ball mill for 2 hours, and forced drying after taking it out. The dried material powder is placed in a corundum crucible and melted at a high temperature of 1400°C. The molten glass is quenched by water to make a larger glass powder. The large glass powder is then ground by stirring and ball milling. The particle size of glass glaze powder is 1.5-2.5 microns;

[0042] 2. Preparation of organic solution: the organic solution material is a transparent viscous solution, composed of terpineol, polyvinyl butyral PVB and castor oil, according to the weight ratio terpineol: polyvinyl butyral PVB: castor oil The ratio of 79:15:6 is formulated into a viscous transparent solution, and its viscosity is 5000-6000m...

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Abstract

The invention relates to the technical field of a zirconium dioxide oxygen sensor for an automobile electric injection engine, in particular to an inlaid plate-shaped oxygen sensor and a preparation method thereof. The inlaid plate-shaped oxygen sensor comprises a ceramic heater, a zirconia sensitive element, a glass glaze sealing layer, a heating circuit, a reference gas channel, an alumina base body and a groove, wherein the zirconia sensitive element is arranged in the ceramic heater; the ceramic heater is connected with the zirconia sensitive element through the glass glaze sealing layer; the ceramic heater consists of the alumina base body and the groove; the groove is arranged on the upper surface of the alumina base body, and the heating circuit is arranged on the lower surface; and the reference gas channel is arranged between the zirconia sensitive element and the groove. The inlaid plate-shaped oxygen sensor provided by the invention improves the high-temperature insulation performance of the product, has fast response to electric signal, reduces the energy consumption and production cost, has long service life and is easy to popularize.

Description

technical field [0001] The invention relates to the technical field of a zirconia oxygen sensor for an automobile electronic fuel injection engine, in particular to a mosaic plate-shaped oxygen sensor and a preparation method thereof. Background technique [0002] The rapid development of the automobile industry in the period, the continuous improvement of exhaust emission standards, and the continuous improvement of the requirements for oxygen sensors used in automobiles. At present, the tubular zirconia oxygen sensor is commonly used in China. The tubular zirconia sensitive probe is used, and the alumina ceramic heating core is introduced in the middle. The heating method is indirect heating. The product size is large, the structure is complex, and the response speed is slow, which is difficult to meet The current increasingly stringent exhaust emission requirements. The integrated plate-shaped oxygen sensor has been used in batches in the world, but due to the high-tempe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/26
Inventor 党桂彬杨世养冯江涛
Owner CHANGZHOU LAMBDA ELECTRONICS
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