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A kind of chip type oxygen sensor for motorcycle and preparation method thereof

An oxygen sensor and motorcycle technology, applied in the field of sensors, can solve problems such as the difficulty of making the width small enough, the width cannot be small enough, and poor output signal stability, and achieve compact structure, ensure stability, improve sensitivity and The effect of precision

Active Publication Date: 2020-05-19
成都科锐传感技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both structures can flexibly control the thickness of the product with the increase or decrease of the structural layer, but the width of the former cannot be small enough due to the need for an insulating layer on the top and bottom of the heater and the existence of an air reference chamber; although the latter has no insulation layer, but there is still an air reference cavity in the structure, and its width is also difficult to be small enough
And the size of the air cavity is limited, which affects the diffusion of the air and is more likely to be polluted, resulting in poor stability of the output signal

Method used

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  • A kind of chip type oxygen sensor for motorcycle and preparation method thereof
  • A kind of chip type oxygen sensor for motorcycle and preparation method thereof
  • A kind of chip type oxygen sensor for motorcycle and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]A chip oxygen sensor for motorcycles, comprising a porous and protective layer 1, a functional layer 2, a diffusion layer 3 and a heating layer 4 which are sequentially stacked and sintered from top to bottom; one end of the porous and protective layer 1 is a porous Alumina substrate 11, the other end of the porous and protective layer 1 is the first alumina substrate 12, the functional layer 2 includes the first zirconia substrate 21, the inner surface on both sides of the first zirconia substrate 21 An electrode 22 and an external electrode 23, wherein the external electrode 23 is located on the first zirconia substrate 21 close to the porous and protective layer 1 side, and the porous alumina substrate 11 completely covers the external electrode 23, the first alumina substrate 12 covers the external electrode leads, the diffusion layer 3 includes a second zirconia substrate 31 and a diffusion channel 32 arranged above the second zirconia substrate 31, and the heating l...

Embodiment 2

[0041] A method for preparing a sheet-type oxygen sensor for motorcycles, comprising the following steps:

[0042] 1) Preparation of zirconia ceramic slurry, alumina ceramic slurry and porous alumina ceramic slurry:

[0043] Prepare according to the raw materials of the following mass percentages:

[0044] Zirconia ceramic slurry: 75% of yttria with a content of 3mol% yttria stabilized zirconia, 15% of yttrium oxide and 10% of alumina are formulated as inorganic components, and then added to account for 1% of the total mass of inorganic components dispersant, an organic solvent accounting for 40% of the total mass of the inorganic components, a binder accounting for 5% of the total mass of the inorganic components, and a plasticizer accounting for 5% of the total mass of the inorganic components; the zirconia ceramic slurry is formed after ball milling;

[0045] Alumina ceramic slurry: 80% alumina and 20% sintering aids are prepared as inorganic components, and then add dispe...

Embodiment 3

[0052] A method for preparing a sheet-type oxygen sensor for motorcycles, comprising the following steps:

[0053] 1) Preparation of zirconia ceramic slurry, alumina ceramic slurry and porous alumina ceramic slurry:

[0054] Prepare according to the raw materials of the following mass percentages:

[0055] Zirconia ceramic slurry: 92% of yttria with a content of 8mol% yttria stabilized zirconia, 3% of yttrium oxide and 5% of alumina are formulated as inorganic components, and then added to account for 8% of the total mass of inorganic components dispersant, an organic solvent accounting for 50% of the total mass of the inorganic components, a binder accounting for 10% of the total mass of the inorganic components, and a plasticizer accounting for 10% of the total mass of the inorganic components; the zirconia ceramic slurry is formed after ball milling;

[0056] Alumina ceramic slurry: 97% of alumina and 3% of sintering aid are prepared as inorganic components, and then add d...

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Abstract

The invention discloses a disk type oxygen sensor for a motorcycle. The disk-type oxygen sensor comprises a porous protection layer, a functional layer, a diffusion layer and a heating layer which aresequentially overlapped and sintered from top to bottom, wherein a porous aluminum oxide substrate is arranged at one end of the porous protection layer, and a first aluminum oxide substrate is arranged at the other end of the porous protection layer; the functional layer comprises a first zirconium oxide substrate, an internal electrode and an external electrode, and the internal electrode and the external electrode are arranged on the two sides of the first zirconium oxide substrate; the diffusion layer comprises a second zirconium oxide substrate and a diffusion channel arranged above thesecond zirconium oxide substrate; the heating layer comprises a second aluminum oxide substrate and a third aluminum oxide substrate which are sequentially overlapped from top to bottom, and a heateris arranged on the third aluminum oxide substrate. In work of the disk type oxygen sensor for the motorcycle, pump current serving as testing reference is exerted on the internal electrode and the external electrode. The invention further discloses a preparation method of the disk type oxygen sensor for the motorcycle. The disk type oxygen sensor disclosed by the invention is compact in structureand is suitable for a motorcycle tail gas exhausting system.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a sheet-type oxygen sensor for motorcycles and a preparation method thereof. Background technique [0002] At present, the oxygen sensor, as an essential component of the closed-loop feedback EFI system, has been widely used in the automobile exhaust control system to meet the increasingly stringent emission requirements. However, with the further improvement of environmental protection requirements, the EFI system will also be applied to motorcycles. Therefore, it has become an urgent task to develop an oxygen sensor suitable for motorcycle EFI system. [0003] From a functional point of view, the oxygen sensor for motorcycles is consistent with the oxygen sensor for automobiles, that is, to measure the oxygen content in the exhaust gas and convert it into an electrical signal. The air coefficient λ=1 is the target closed-loop control, so as to realize the complete combustion ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/00C04B35/48C04B35/622C04B35/10C04B38/06
CPCC04B35/10C04B35/48C04B35/622C04B38/068C04B2235/3217C04B2235/3225G01N27/00
Inventor 黄涛包绍明李婷余苗
Owner 成都科锐传感技术有限公司
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