CN203745445U - Automobile oxygen sensor - Google Patents
Automobile oxygen sensor Download PDFInfo
- Publication number
- CN203745445U CN203745445U CN201420005851.0U CN201420005851U CN203745445U CN 203745445 U CN203745445 U CN 203745445U CN 201420005851 U CN201420005851 U CN 201420005851U CN 203745445 U CN203745445 U CN 203745445U
- Authority
- CN
- China
- Prior art keywords
- tubular ceramic
- ceramic oxygen
- protective cover
- layer protective
- sensitive element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 239000001301 oxygen Substances 0.000 title claims abstract description 43
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 43
- 239000000919 ceramic Substances 0.000 claims abstract description 33
- 229910052573 porcelain Inorganic materials 0.000 claims abstract description 21
- 230000001681 protective effect Effects 0.000 claims abstract description 16
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 238000005245 sintering Methods 0.000 claims abstract description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 20
- 238000012856 packing Methods 0.000 claims description 12
- 230000002706 hydrostatic effect Effects 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 238000005056 compaction Methods 0.000 abstract description 3
- 238000000462 isostatic pressing Methods 0.000 abstract description 3
- 238000003754 machining Methods 0.000 abstract 2
- 239000000843 powder Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Abstract
The utility model provides an automobile oxygen sensor, and particularly relates to an automobile oxygen sensor which is characterized by comprising a base, an inner layer protective cover, an outer layer protective cover and a tubular ceramic oxygen sensing element, wherein the inner layer protective cover and the outer layer protective cover are welded with the base into a whole; the tubular ceramic oxygen sensing element is arranged in the inner layer protective cover; a heater is arranged in the tubular ceramic oxygen sensing element; the tubular ceramic oxygen sensing element is fixed in the base by a sealing ring, a compaction ceramic ring, a belleville spring and a gasket; a lower porcelain seat is connected with the base and is externally provided with a plastic sheath which is connected with the base by a sealing washer and an S-shaped washer; a high-temperature lead is connected to the tubular ceramic oxygen sensing element which is connected with an external electrode and an internal electrode; an inner barrel is connected with the base; an upper porcelain seat is arranged in the inner barrel; an outer cover is arranged at the outer side of the inner barrel; a breathable film is arranged between the inner barrel and the outer cover; after a waterproof plug is arranged on the upper porcelain seat, the high-temperature lead is connected with a connector; a small plug is arranged in the inner layer protective cover; the tubular ceramic oxygen sensing element is formed by isostatic pressing and numerical control machining sintering, so that the rejection rate of products can be greatly reduced. A zirconium element with shorter size is adopted by the tubular ceramic oxygen sensing element, so that the risk of breakage of the zirconium element can be reduced in the later machining process while the cost is lowered.
Description
Technical field
The utility model relates to a kind of lambda sensor, and especially a kind of automotive oxygen sensor, mainly for detection of the oxygen concentration in tail gas.
Background technology
Along with people improve the requirement of motor vehicle emission tail gas, China has put into effect the standard of much policy and the pollutant emission of regulation file restricting vehicle.Lambda sensor is the important component part in automobile engine management system, and it is for detection of the oxygen concentration in tail gas, thereby realizes closed-loop control.Zirconium element is the core component of lambda sensor, and its matrix is stable zirconia ceramic.Oxygen sensor zirconium component size that at present foreign market produces is long, consumption of raw materials is large and cost is high, may cause the risk of zirconium element fracture also just large in the time of finishing.
At present China market part oxygen sensor ceramic part is to produce by injection moulding, pad compression technology, without finishing, exists and burns till that the rejection rate of rear generation is high, sintering difficulty large and the shortcoming such as sintering product surface is out rough.
Summary of the invention
In order to address this problem, the utility model provides a kind of lambda sensor, especially a kind of automotive oxygen sensor.
The utility model comprises pedestal and is welded on internal layer protective cover and the outer layer protection cover of one with it and is located at the tubular ceramic oxygen sensitive element in internal layer protective cover, well heater is arranged on tubular ceramic oxygen sensitive element inside, tubular ceramic oxygen sensitive element passes through sealing ring, compress porcelain ring, butterfly spring and packing ring are fixed in pedestal, lower porcelain seat is connected with pedestal, lower porcelain seat outside is provided with plastic sheath, plastic sheath is connected with pedestal with S type packing ring by packing washer, high temperature wire is connected to and on tubular ceramic oxygen sensitive element and on tubular ceramic oxygen sensitive element, is connected with external electrode and interior electrode, inner core is connected with pedestal, upper porcelain seat is arranged in inner core, inner core outside is provided with outer cover, between inner core and outer cover, ventilated membrane is housed, after waterproof plug is arranged on porcelain seat, high temperature wire is connected with connector, small plug is arranged in internal layer protective cover.
Described tubular ceramic oxygen sensitive element is zirconium element, and its total length is 42.13mm.
Above-mentioned tubular ceramic oxygen sensitive element adopts hydrostatic pressing and digital control processing sintering to form, and greatly reduces the rejection rate of product.
Above-mentioned equal pressing forming technology, it is characterized in that, refer at normal temperatures, make thin wall wrap model material with rubber, powder is contained in elastic mould, and puts into super-pressure working cylinder (general working pressure be 100-630MPa), hydraulic medium is injected to super-pressure working cylinder with pump, stepless action, in all surface of mould, makes the even compression forming of powder.These technology manufactured goods respectively to favourable identity, high for performance requirement, part complex-shaped and that slenderness ratio is large has very good effect.
Isostatic pressing technology, as one, compared with conventional forming technique, has following characteristics:
1) extrudate density of isostatic compaction is high, generally than the high 5～l5 of unidirectional and two-way compression molding doubly.
2) even density of pressed compact is consistent.In moulding, no matter be unidirectional or two-way compacting, all can there is green density skewness phenomenon.The variation of this density, in the time of compacting complicated shape goods, often can reach more than 10%.This is because the frictional resistance between powder and punching block causes.Deng hydrostatic fluid medium transmission of pressure, in all directions, equate.Jacket and powder are unanimous on the whole by compression, and powder and jacket are without relative motion, and the frictional resistance between them is little, and pressure only has decline slightly, and this variable density generally only has below 1%, therefore, can think that blank density is uniform.
3) because even density, can be unrestricted so make length-diameter ratio, this be just conducive to produce bar-shaped, tubulose thin and long product.
4) isostatic pressing process generally need to not add lubricant in powder, has so both reduced the pollution to goods, has simplified again manufacturing process.
5) goods of isostatic compaction, excellent performance, with short production cycle, applied range.
The utility model tubular ceramic oxygen sensitive element adopts relatively short zirconium element, has structurally greatly shortened the size of zirconium element, in reducing costs, has reduced the risk of zirconium element at post-production process Fracture.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is further illustrated.
Fig. 1 is the utility model structural drawing.
In figure: 1, plastic sheath; 2, outer layer protection cover; 3, internal layer protective cover; 4, well heater; 5, tubular ceramic oxygen sensitive element; 6, pedestal; 7, lower porcelain seat; 8, packing washer; 9, S type packing ring; 10, sealing ring; 11, compress porcelain ring; 12, external electrode; 13, packing ring; 14, interior electrode; 15, inner core; 16, ventilated membrane; 17, outer cover; 18, small plug; 19, waterproof plug; 20, upper porcelain seat; 21, high temperature wire; 22, butterfly spring; 23, connector.
Embodiment
embodiment 1
As shown in Figure 1, the utility model comprises pedestal (6) and is welded on internal layer protective cover (3) and the outer layer protection cover (2) of one with it and is located at the tubular ceramic oxygen sensitive element (5) in internal layer protective cover (3), well heater (4) is arranged on tubular ceramic oxygen sensitive element (5) inside, tubular ceramic oxygen sensitive element (5) is by sealing ring (10), compress porcelain ring (11), butterfly spring (22) and packing ring (13) are fixed in pedestal (6), lower porcelain seat (7) is connected with pedestal (6), lower porcelain seat (7) outside is provided with plastic sheath (1), plastic sheath (1) is connected with pedestal (6) with S type packing ring (9) by packing washer (8), high temperature wire (21) is connected to tubular ceramic oxygen sensitive element (5) and above and on tubular ceramic oxygen sensitive element (5) is connected with external electrode (12) and interior electrode (14), inner core (15) is connected with pedestal (6), upper porcelain seat (20) is arranged in inner core (15), inner core (15) outside is provided with outer cover (17), between inner core (15) and outer cover (17), ventilated membrane (16) is housed, waterproof plug (19) is arranged on porcelain seat (20) afterwards, high temperature wire (21) is connected with connector (23), small plug (18) is arranged in internal layer protective cover (3).
Described tubular ceramic oxygen sensitive element (5) is zirconium element, and its total length is 42.13mm.
Above-mentioned tubular ceramic oxygen sensitive element (5) adopts hydrostatic pressing and digital control processing sintering to form.
Claims (2)
1. an automotive oxygen sensor, it is characterized in that, comprise pedestal (6) and be welded on internal layer protective cover (3) and the outer layer protection cover (2) of one with it and be located at the tubular ceramic oxygen sensitive element (5) in internal layer protective cover (3), well heater (4) is arranged on tubular ceramic oxygen sensitive element (5) inside, tubular ceramic oxygen sensitive element (5) is by sealing ring (10), compress porcelain ring (11), butterfly spring (22) and packing ring (13) are fixed in pedestal (6), lower porcelain seat (7) is connected with pedestal (6), lower porcelain seat (7) outside is provided with plastic sheath (1), plastic sheath (1) is connected with pedestal (6) with S type packing ring (9) by packing washer (8), high temperature wire (21) is connected to tubular ceramic oxygen sensitive element (5) and above and on tubular ceramic oxygen sensitive element (5) is connected with external electrode (12) and interior electrode (14), inner core (15) is connected with pedestal (6), upper porcelain seat (20) is arranged in inner core (15), inner core (15) outside is provided with outer cover (17), between inner core (15) and outer cover (17), ventilated membrane (16) is housed, waterproof plug (19) is arranged on porcelain seat (20) afterwards, high temperature wire (21) is connected with connector (23), small plug (18) is arranged in internal layer protective cover (3).
2. automotive oxygen sensor as claimed in claim 1, is characterized in that, described tubular ceramic oxygen sensitive element (5) is zirconium element, and its total length is 42.13mm.
3. automotive oxygen sensor as claimed in claim 1, is characterized in that, tubular ceramic oxygen sensitive element (5) adopts hydrostatic pressing and digital control processing sintering to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420005851.0U CN203745445U (en) | 2014-01-06 | 2014-01-06 | Automobile oxygen sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420005851.0U CN203745445U (en) | 2014-01-06 | 2014-01-06 | Automobile oxygen sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203745445U true CN203745445U (en) | 2014-07-30 |
Family
ID=51345230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420005851.0U Expired - Lifetime CN203745445U (en) | 2014-01-06 | 2014-01-06 | Automobile oxygen sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203745445U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569305A (en) * | 2014-12-22 | 2015-04-29 | 苏州工业园区传世汽车电子有限公司 | Gas sensor triple protection cover |
| CN108732315A (en) * | 2018-06-06 | 2018-11-02 | 成都科锐传感技术有限公司 | A kind of ventilating structure of lambda sensor |
-
2014
- 2014-01-06 CN CN201420005851.0U patent/CN203745445U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569305A (en) * | 2014-12-22 | 2015-04-29 | 苏州工业园区传世汽车电子有限公司 | Gas sensor triple protection cover |
| CN108732315A (en) * | 2018-06-06 | 2018-11-02 | 成都科锐传感技术有限公司 | A kind of ventilating structure of lambda sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200812 Address after: 215299 south of Lianyang Road, east of Shunfeng Road, Wujiang Economic and Technological Development Zone, Suzhou City, Jiangsu Province Patentee after: SUZHOU AECS AUTOMOTIVE ELECTRONICS Co.,Ltd. Address before: 226009, building 8, 9 Industrial Park, new East Road, Nantong economic and Technological Development Zone, Jiangsu, China Patentee before: JIANGSU AIRBLUE AUTOELECTRICS Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210219 Address after: 226001 No.88 Xinning Road, Chongchuan District, Nantong City, Jiangsu Province Patentee after: Jiangsu aoyikesi Automotive Electronic Technology Co.,Ltd. Address before: 215299 south of Lianyang Road, east of Shunfeng Road, Wujiang Economic and Technological Development Zone, Suzhou City, Jiangsu Province Patentee before: SUZHOU AECS AUTOMOTIVE ELECTRONICS Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140730 |