Flat oxygen sensor and preparation method thereof

An oxygen sensor and flat-plate technology, which is applied in the field of flat-type oxygen sensor and its preparation, can solve the problems of low bending strength chip assembly yield, blockage of reference air channels, and high mass production costs, so as to prevent interlayer cracking, The effect of accelerating drying speed and improving production efficiency
CN102608193BActive Publication Date: 2013-09-25WUXI LONGSHENG TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUXI LONGSHENG TECH
Publication Date
2013-09-25

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Abstract

The invention discloses a flat oxygen sensor and a preparation method thereof. The flat oxygen sensor comprises a sensor chip prepared by seven layers of zirconium oxide ceramic raw pieces which are 0.2 to 0.25 mm thick, wherein the chip sequentially comprises a signal functional layer consisting of the first and second layers of ceramic raw pieces, a reference channel functional layer consisting of the third, fourth and fifth layers of ceramic raw pieces and a heating functional layer consisting of the sixth and seventh layers of ceramic raw pieces; an outer electrode and a signal electrode pin are arranged on the upper surface of the first layer of ceramic raw piece; a porous protection layer is arranged on the outer electrode; a lead protection layer is arranged on the signal electrode pin; a reference electrode is arranged between the second and third layers of ceramic raw pieces; a heater is arranged between the fifth and sixth layers of ceramic raw pieces; an upper heater insulation layer and a lower heater insulation layer are arranged on and below heater respectively; and a heating electrode pin is connected to the heater. The preparation method comprises the following steps of preparing, forming, printing and stacking the ceramic raw pieces and sintering the sensor.
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Description

technical field

[0001] The present invention relates to a kind of automobile oxygen sensor chip structure and preparation method thereof, especially relate to a kind of 5%molY 2 o 3 Doped ZrO 2 A planar oxygen sensor with solid electrolyte and a preparation method thereof. Background technique

[0002] The oxygen sensor is installed in the engine exhaust pipe or exhaust tailpipe to measure the remaining oxygen concentration in the engine exhaust. The engine ECU close-loop controls the air-fuel ratio of the engine combustion according to the signal provided by the oxygen sensor so that it reaches a constant 14.7. Therefore, the three-way catalyst can most effectively reduce the components of carbon monoxide, hydrocarbons, and nitrogen oxides in automobile exhaust, and convert the harmful gases in the exhaust into carbon dioxide, nitrogen, and water.

[0003] The oxygen sensor is prepared by utilizing the high-temperature oxygen ion conduction characteristics of zirconia an...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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