CN103454329A - Multilayered oxygen sensor with sheet type structure - Google Patents
Multilayered oxygen sensor with sheet type structure Download PDFInfo
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- CN103454329A CN103454329A CN2013103944744A CN201310394474A CN103454329A CN 103454329 A CN103454329 A CN 103454329A CN 2013103944744 A CN2013103944744 A CN 2013103944744A CN 201310394474 A CN201310394474 A CN 201310394474A CN 103454329 A CN103454329 A CN 103454329A
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Abstract
The invention discloses a multilayered oxygen sensor with a sheet type structure. The multilayered oxygen sensor with the sheet type structure comprises a zirconium oxide sensitive layer, a reference air channel layer and a heating layer, wherein an outer electrode is arranged on the upper surface of the zirconium oxide sensitive layer and an inner electrode is arranged on the lower surface of the zirconium oxide sensitive layer; the multilayered oxygen sensor with the sheet type structure is characterized in that a first porous transition layer for adjusting thermal expansion coefficients of different structure layers and preventing the layers from being cracked is arranged between the zirconium oxide sensitive layer and the reference air channel layer; a second porous transition layer for adjusting the thermal expansion coefficients of the different structure layers and preventing the layers from being cracked is arranged between the reference air channel layer and the heating layer; the multilayered oxygen sensor with the sheet type structure is sequentially provided with the zirconium oxide sensitive layer, the first porous transition layer, the reference air channel layer, the second porous transition layer and the heating layer. According to the multilayered oxygen sensor with the sheet type structure, interlayer stress caused by thermal expansion of the different structure layers can be adjusted so as to prevent the layers from being cracked and guarantee the service life of the oxygen sensor; meanwhile, the stable performance between the different structure layers is guaranteed and the performance of the oxygen sensor is improved.
Description
Technical field
The present invention relates to a kind of lambda sensor, relate in particular to the monolithic multilayer structure lambda sensor.
Background technology
Automotive oxygen sensor is crucial sensing element in automobile electrically-controlled fuel injection system (EFI), it is a kind of Solid Electrolyte Oxygen Sensor, lambda sensor has a specific character, at theoretical air-fuel ratio A/F(14.7:1) near its output voltage sudden change is arranged, be arranged in automobile exhaust pipe the oxygen content for the measured automobiles emission more, be translated into electric signal, then feed back to and control electricity unit, according to its signal, the air-fuel ratio A/F to engine is regulated control module, when actual mixing ratio uprises, in exhaust, the concentration of oxygen increases and lambda sensor state (little electromotive force: O volt) the notice control electricity unit rare combination gas, when air-fuel ratio is lower than chemically correct fuel, in exhaust, the concentration of oxygen reduces, and the state that lambda sensor is rare combination gas (large electromotive force: 1 volt) notice is controlled electricity unit.Its stable output signal is reliable, and strong interference immunity makes automobile dynamic quality and fuel consume reach best proportioning, thereby reaches the purpose that reduces exhaust emissions and save oil consumption.
Lambda sensor only when high temperature (end reaches 300 ° more than C) its characteristic just can fully demonstrate, could output voltage.It is when about 800 ° of C, the fastest to the reacting condition of combination gas, and this specific character can great changes will take place when low temperature.The first generation is hot type tubular type lambda sensor, and its response time is long, and measuring accuracy is low, and the second generation is hot type slice structure lambda sensor, and its response time is short and measuring accuracy is high.The slice structure lambda sensor of existing design comprises protective seam, zirconia sensitive layer, reference gas channel layer, zone of heating; this kind of structure can find out that each layer is directly to be connected; thermal expansivity difference due to lambda sensor different structure interlayer; sensor in use; due to constant intensification and cooling; sensor is difficult to bear so heat fatigue; and in use occur that cracking waits failure phenomenon; and the mechanical property of different structure interlayer coupling will directly cause the performance of lambda sensor, the stability of each layer is low.
Summary of the invention
In order to overcome existing slice structure lambda sensor, the failure phenomenons such as cracking in use appear, the invention provides a kind of monolithic multilayer structure lambda sensor, by increasing the porous transition bed, regulate the thermal expansion of different structure interlayer, prevent from ftractureing between lamination, guarantee the serviceable life of sensor, further, improve the mechanical property coupling of lambda sensor different structure interlayer, increase the stability of each layer, thereby improve the performance of sensor.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention is achieved through the following technical solutions:
The monolithic multilayer structure lambda sensor, comprise the zirconia sensitive layer, reference gas channel layer, zone of heating, described zirconia sensitive layer upper surface is provided with external electrode, lower surface is provided with interior electrode, it is characterized in that, be provided with between zirconia sensitive layer and reference gas channel layer and regulate different structure layer thermal expansivity, prevent the first porous transition bed ftractureed between layers, be provided with between reference gas channel layer and zone of heating and regulate different structure layer thermal expansivity, prevent the second porous transition bed ftractureed between layers, the monolithic multilayer structure lambda sensor is arranged in order as the zirconia sensitive layer, the first porous transition bed, reference gas channel layer, the second porous transition bed and zone of heating.
Between zirconia sensitive layer and reference gas channel layer, between reference gas channel layer and zone of heating, all be provided with the porous transition bed, the porous transition bed can be regulated the inter-laminar stress that the different structure layer causes because of thermal expansion, and then prevent from ftractureing between layers, guaranteed the serviceable life of lambda sensor, guarantee the stability between the different structure layer simultaneously, improve the integrally-built performance of lambda sensor.
Further, described porous transition bed comprises the resistant strata for close adhesion different structure layer, adjusting different structure layer thermal expansivity, increase different structure layer stability, zirconia ceramic layer successively.Preferably on resistant strata, also be provided with the alumina layer that improves different structure interlayer mechanical property coupling.The porous transition bed of three-decker is coordinated mutually, has guaranteed stability, mechanical matching performance of lambda sensor etc.
Lambda sensor only when high temperature (end reaches 300 ° more than C) its characteristic just can fully demonstrate, could output voltage.So be provided with heating electrode on zone of heating, as long as after adding power source, 10S can reach a high temperature, the response time is fast.
The invention has the beneficial effects as follows: between zirconia sensitive layer and reference gas channel layer, between reference gas channel layer and zone of heating, all be provided with the porous transition bed, regulate the thermal expansion of different structure interlayer, prevent from ftractureing between lamination, guarantee the serviceable life of sensor, the porous transition bed of three-decker, can improve the mechanical property coupling of lambda sensor different structure interlayer, increase the stability of each layer, thereby improve the performance of sensor.
The accompanying drawing explanation
Fig. 1 is the structural drawing that monolithic multilayer structure lambda sensor of the present invention splits;
Fig. 2 is the structural representation after monolithic multilayer structure lambda sensor combination of the present invention;
Fig. 3 is the porous transition bed of three-decker of the present invention;
The mark implication of accompanying drawing is as follows:
1: protective seam; 2: the zirconia sensitive layer; 21: external electrode; 3: the first porous transition beds; 4: reference gas channel layer; 41: reference gas passage; 5: the second porous transition beds; 6: zone of heating; 61: heating electrode; 7: zirconia ceramic layer; 8: resistant strata; 9: alumina layer.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, technical solution of the present invention is described in further detail, can be implemented so that those skilled in the art can better understand the present invention also, but illustrated embodiment is not as a limitation of the invention.
As shown in Figure 1, the monolithic multilayer structure lambda sensor, comprise successively from top to bottom protective seam 1, zirconia sensitive layer 2, the first porous transition bed 3, reference gas channel layer 4, the second porous transition bed 5, zone of heating 6, wherein protective seam 1 can be used for protecting whole lambda sensor, can increase the serviceable life of lambda sensor, Fig. 2 is the structural representation after combination, zirconia sensitive layer upper surface is provided with external electrode 21, lower surface is provided with interior electrode (not shown), be provided with between zirconia sensitive layer 2 and reference gas channel layer 4 and regulate different structure layer thermal expansivity, prevent the first porous transition bed 3 ftractureed between layers, be provided with between reference gas channel layer 4 and zone of heating 6 and regulate different structure layer thermal expansivity, prevent the second porous transition bed 5 ftractureed between layers, can regulate the inter-laminar stress that the different structure layer causes because of thermal expansion, and then prevent from ftractureing between layers, guaranteed the serviceable life of lambda sensor, guarantee the stability between the different structure layer simultaneously, improve the integrally-built performance of lambda sensor.Reference gas channel layer 4 is provided with the reference gas passage 41 that holds reference gas, gas to be measured, such as the waste gas of the automobile outside at lambda sensor, gas oxygen content difference due to zirconia sensitive layer 2 top and bottom, so can form electromotive force at zirconia sensitive layer 2 upper and lower sides, just can record electromotive force numerical value by external electrode 21 and interior electrode, and then calculate the oxygen content of gas to be measured.
The porous transition bed can be double-layer structure, comprises successively resistant strata 8 and zirconia ceramic layer 7, and resistant strata is for the stability of close adhesion different structure layer, adjusting different structure layer thermal expansivity, increase different structure layer.Preferably the porous transition bed is three-decker, on resistant strata 8, also is provided with the alumina layer 9 that improves different structure interlayer mechanical property coupling.Wherein resistant strata 8 can be yttrium oxide layer or magnesium oxide layer or cao layers, and the porous transition bed of three-decker is coordinated mutually, has guaranteed stability, mechanical matching performance of lambda sensor etc.Preferably the thickness of the first porous transition bed 3 and the second porous transition bed 5 is between the 10-25 micron, guarantees integrally-built light and handy.Lambda sensor only when high temperature (end reaches 300 ° more than C) its characteristic just can fully demonstrate, could output voltage.So be provided with heating electrode 61 on zone of heating 6, as long as after adding power source, 10S can reach a high temperature, the response time is fast.
These are only the preferred embodiments of the present invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes instructions of the present invention and accompanying drawing content to do; perhaps directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present invention.
Claims (10)
1. monolithic multilayer structure lambda sensor, comprise the zirconia sensitive layer, reference gas channel layer, zone of heating, described zirconia sensitive layer upper surface is provided with external electrode, lower surface is provided with interior electrode, it is characterized in that, be provided with between zirconia sensitive layer and reference gas channel layer and regulate different structure layer thermal expansivity, prevent the first porous transition bed ftractureed between layers, be provided with between reference gas channel layer and zone of heating and regulate different structure layer thermal expansivity, prevent the second porous transition bed ftractureed between layers, the monolithic multilayer structure lambda sensor is arranged in order as the zirconia sensitive layer, the first porous transition bed, reference gas channel layer, the second porous transition bed and zone of heating.
2. monolithic multilayer structure lambda sensor according to claim 1, it is characterized in that, described porous transition bed comprises the resistant strata for close adhesion different structure layer, adjusting different structure layer thermal expansivity, increase different structure layer stability, zirconia ceramic layer successively.
3. monolithic multilayer structure lambda sensor according to claim 2, is characterized in that, described porous transition bed also is provided with the alumina layer that improves different structure interlayer mechanical property coupling on resistant strata.
4. monolithic multilayer structure lambda sensor according to claim 2, is characterized in that, described resistant strata is yttrium oxide layer.
5. monolithic multilayer structure lambda sensor according to claim 2, is characterized in that, described resistant strata is magnesium oxide layer.
6. monolithic multilayer structure lambda sensor according to claim 2, is characterized in that, described resistant strata is cao layers.
7. monolithic multilayer structure lambda sensor according to claim 1, is characterized in that, the described zirconia sensitive layer outside also is provided with protective seam.
8. monolithic multilayer structure lambda sensor according to claim 7, is characterized in that, on described zone of heating, is provided with heating electrode.
9. monolithic multilayer structure lambda sensor according to claim 8, is characterized in that, described reference gas channel layer is provided with the reference gas passage that holds reference gas.
10. according to the described monolithic multilayer structure lambda sensor of claim 1-9 any one, it is characterized in that, the thickness of described the first porous transition bed and the second porous transition bed is the 10-25 micron.
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| CN201310394474.4A CN103454329B (en) | 2013-09-04 | 2013-09-04 | Monolithic multilayer structure lambda sensor |
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| CN201310394474.4A CN103454329B (en) | 2013-09-04 | 2013-09-04 | Monolithic multilayer structure lambda sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569106A (en) * | 2014-12-24 | 2015-04-29 | 昆山圣赛诺尔传感技术有限公司 | Chip sensor and preparation method thereof |
| CN104569108A (en) * | 2014-12-24 | 2015-04-29 | 昆山圣赛诺尔传感技术有限公司 | Preparation method of novel chip-type oxygen sensor |
| CN113376236A (en) * | 2021-06-02 | 2021-09-10 | 深圳聚德寿科技有限公司 | Tubular oxygen sensor core and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040084309A1 (en) * | 2002-11-01 | 2004-05-06 | Ngk Spark Plug Co., Ltd. | Gas sensor having a laminate comprising solid electrolyte layers and alumina substrate |
| CN102235994A (en) * | 2010-04-23 | 2011-11-09 | 比亚迪股份有限公司 | Plate oxygen sensor and preparation method thereof |
| CN102455311A (en) * | 2010-10-21 | 2012-05-16 | 比亚迪股份有限公司 | Method for preparing chip of sheet oxygen sensor |
| CN102608182A (en) * | 2012-02-20 | 2012-07-25 | 曾咏平 | Oxygen sensor chip and manufacturing method thereof |
| CN103018283A (en) * | 2012-12-25 | 2013-04-03 | 珠海市香之君电子有限公司 | Chip type oxygen sensor |
| CN203519552U (en) * | 2013-09-04 | 2014-04-02 | 朱捷 | Oxygen sensor with multilayer sheet type structure |
-
2013
- 2013-09-04 CN CN201310394474.4A patent/CN103454329B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040084309A1 (en) * | 2002-11-01 | 2004-05-06 | Ngk Spark Plug Co., Ltd. | Gas sensor having a laminate comprising solid electrolyte layers and alumina substrate |
| CN102235994A (en) * | 2010-04-23 | 2011-11-09 | 比亚迪股份有限公司 | Plate oxygen sensor and preparation method thereof |
| CN102455311A (en) * | 2010-10-21 | 2012-05-16 | 比亚迪股份有限公司 | Method for preparing chip of sheet oxygen sensor |
| CN102608182A (en) * | 2012-02-20 | 2012-07-25 | 曾咏平 | Oxygen sensor chip and manufacturing method thereof |
| CN103018283A (en) * | 2012-12-25 | 2013-04-03 | 珠海市香之君电子有限公司 | Chip type oxygen sensor |
| CN203519552U (en) * | 2013-09-04 | 2014-04-02 | 朱捷 | Oxygen sensor with multilayer sheet type structure |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569106A (en) * | 2014-12-24 | 2015-04-29 | 昆山圣赛诺尔传感技术有限公司 | Chip sensor and preparation method thereof |
| CN104569108A (en) * | 2014-12-24 | 2015-04-29 | 昆山圣赛诺尔传感技术有限公司 | Preparation method of novel chip-type oxygen sensor |
| CN104569108B (en) * | 2014-12-24 | 2017-03-29 | 昆山圣赛诺尔传感技术有限公司 | A kind of preparation method of chip oxygen sensor |
| CN104569106B (en) * | 2014-12-24 | 2017-12-01 | 昆山圣赛诺尔传感技术有限公司 | A kind of sheet type sensor and preparation method thereof |
| CN113376236A (en) * | 2021-06-02 | 2021-09-10 | 深圳聚德寿科技有限公司 | Tubular oxygen sensor core and preparation method thereof |
| CN113376236B (en) * | 2021-06-02 | 2022-10-14 | 深圳聚德寿科技有限公司 | Tubular oxygen sensor core and preparation method thereof |
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| CN103454329B (en) | 2016-03-23 |
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