Chip oxygen sensor and its preparation method

An oxygen sensor, a chip technology, applied in the field of automotive chip zirconia oxygen sensor and its preparation, can solve the problems of difficulty in meeting exhaust emission requirements, slow response speed, complex structure, etc., to reduce poisoning failure, The effect of fast response speed and faster response speed

Inactive Publication Date: 2007-07-18
杨世养
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Problems solved by technology

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 mi

Method used

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  • Chip oxygen sensor and its preparation method

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Embodiment Construction

[0032] With reference to Fig. 1, provide a kind of chip type oxygen sensor and preparation method thereof, chip type oxygen sensor comprises heater (9) and oxygen sensitive probe (13), and heater (9) comprises heater substrate (1), is located at heating The insulating layer (2) on the upper part of the base body (1) and several heating bodies (3) arranged inside the insulating layer (2), the oxygen sensitive probe (13) includes the reference gas channel body arranged on the upper part of the heater (9) (4), the zirconia sensitive substrate (6) arranged on the upper part of the reference gas channel body (4), the external electrodes (8) and the internal electrodes (7) respectively arranged on the upper and lower surfaces of the zirconia sensitive substrate (6), each The two ends of the heating body (3) respectively extend outward and converge to form two conductive pins (12) at the lower part of the heater base (1), and a porous protective layer (10) is provided on the upper sur...

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Abstract

The invention discloses a sheet type oxygen sensor and its manufacturing method. It includes heater basal body, reference gas channel body, and zirconium oxide sensing basal body. Insulating layer is set between the former two. And its inner is set many heating bodies. The up and down surfaces of the third are respectively set outer and inner electrodes. The reference gas channel is connected with the space and atmosphere where the inner electrode is set. Heater and oxygen sensing probe are burned together high temperature to be a whole to form direct heating structure. The invention has the advantages of simple structure, small size and quality, saving energy, fast response speed, greatly shortening weighting time, and obvious economic and social benefits.

Description

technical field [0001] The invention relates to a chip-type oxygen sensor and a preparation method thereof, more specifically, to a chip-type zirconia oxygen sensor for automobiles and a preparation method thereof. Background technique [0002] Recently, with the rapid development of the automobile industry, the exhaust emission standards have been continuously improved, and the requirements for oxygen sensors used in automobiles have also been continuously improved. 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 response speed is slow, the size is large, and the structure is complicated. Increasingly stringent exhaust emission requirements. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned defects in the prior art, and provide a chip o...

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Application Information

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IPC IPC(8): G01N27/12G01N27/407
Inventor 杨世养周云
Owner 杨世养
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