CN207908427U - A kind of novel air-fuel ratio sensor - Google Patents
A kind of novel air-fuel ratio sensor Download PDFInfo
- Publication number
- CN207908427U CN207908427U CN201820145486.1U CN201820145486U CN207908427U CN 207908427 U CN207908427 U CN 207908427U CN 201820145486 U CN201820145486 U CN 201820145486U CN 207908427 U CN207908427 U CN 207908427U
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- Prior art keywords
- fuel ratio
- air
- ratio sensor
- stainless steel
- sensor chip
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- 239000000446 fuel Substances 0.000 title claims abstract description 88
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 36
- 239000010935 stainless steel Substances 0.000 claims abstract description 36
- 239000000919 ceramic Substances 0.000 claims abstract description 22
- 230000001681 protective effect Effects 0.000 claims abstract description 20
- 241000277275 Oncorhynchus mykiss Species 0.000 claims abstract description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 28
- 239000001301 oxygen Substances 0.000 claims description 28
- 229910052760 oxygen Inorganic materials 0.000 claims description 28
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 11
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 9
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- 229910052697 platinum Inorganic materials 0.000 claims description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 4
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 3
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 3
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 claims description 2
- 229910052596 spinel Inorganic materials 0.000 claims description 2
- 239000011029 spinel Substances 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 14
- 230000004044 response Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 3
- 210000004027 cell Anatomy 0.000 description 16
- 239000000203 mixture Substances 0.000 description 9
- 239000003921 oil Substances 0.000 description 7
- 239000000295 fuel oil Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000008246 gaseous mixture Substances 0.000 description 4
- 239000002341 toxic gas Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- -1 magnesium aluminate Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 210000002569 neuron Anatomy 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052566 spinel group Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Landscapes
- Measuring Oxygen Concentration In Cells (AREA)
Abstract
The utility model discloses a kind of novel air-fuel ratio sensors, it is characterized in that including air-fuel ratio sensor chip, calandria, hex nut, ceramic fixation kit, stainless steel head protective case, stainless steel stretched sleeve, sealed plasthetic part, wire harness connector, cable harness protection sleeve, connecting terminal, the air-fuel ratio sensor chip is integrally inlaid in above ceramic fixation kit, calandria is connect with air-fuel ratio sensor chip, stainless steel head protective case has hex nut with stainless steel stretched cannula connection, sealed plasthetic part is installed on the inside of stainless steel stretched casing, wire harness connector is connect with air-fuel ratio sensor chip calandria, connecting terminal is connect with wire harness connector.The utility model global design is reasonable, has air-fuel ratio detection range big, and control accuracy is high, and startup speed is fast, and the response time is short, advantage with long service life, can be directly installed at engine exhaust port and use.
Description
Technical field
The utility model is related to sensors, particularly belong to a kind of novel air-fuel ratio sensor.
Background technology
Lambda sensor is a kind of semiconductive ceramic sensor that signal detection is carried out to vehicle exhaust oxygen concentration, is automobile electricity
Most important sensor in spray system is the mass ratio (referred to as " air-fuel ratio ") of system control engine room air and fuel oil
Induction neuron.Lambda sensor be start the 1970s automobile exhaust emission standard control under product, so far for
Only, the innovation of five generation lambda sensors has been undergone altogether：First, second and third on behalf of tubular oxygen sensor, and technology requires to make exhaust emissions
Reach Europe III discharge standards；Forth generation is chip oxygen sensor, and technology requires that exhaust emissions is made to reach Europe IV discharge standards；
5th on behalf of air-fuel ratio sensor, and technology requires that exhaust emissions is made to reach Europe V standards.The central control unit of electric injection system
ECU changes oil spout state, so that it is guaranteed that starting function in real time by receiving the oxygen concentration signal that the air-fuel ratio sensor detects
It is enough to work under optimal air-fuel ratio (ratio 14.7) state, so that fuel oil is fully burnt, to reduce oil consumption, promotes power, subtract
Toxic gas content in few exhaust emissions, achievees the effect that energy-saving and emission-reduction.There are air-fuel ratio inspections for common potentiometric oxygen sensor
Survey range is small, and control accuracy is low, starts the disadvantage that speed is slow, and the response time is grown.For this purpose, the utility model provide it is a kind of novel
Air-fuel ratio sensor.
Utility model content
The utility model provides a kind of novel air-fuel ratio sensor, by air-fuel ratio sensor chip, calandria, hexagonal
Nut, ceramic fixation kit, stainless steel head protective case, stainless steel stretched sleeve, sealed plasthetic part, wire harness connector, harness
The OVERALL OPTIMIZA-TION DESIGN FOR combination of protective case, connecting terminal, it is ensured that engine can be in optimal air-fuel ratio (ratio 14.7) state
Lower work, makes fuel oil fully burn, and to reduce oil consumption, promotes power, reduces the toxic gas content in exhaust emissions, reach
The effect of energy-saving and emission-reduction.The operation is stable performance is good in the presence of a harsh environment for the utility model, and being suitble to promote in automobile engine makes
With.
Technical solution used by the utility model is as follows：
A kind of novel air-fuel ratio sensor, it is characterized in that including air-fuel ratio sensor chip, calandria, hex nut, pottery
Porcelain fixation kit, stainless steel head protective case, stainless steel stretched sleeve, sealed plasthetic part, wire harness connector, cable harness protection sleeve,
Connecting terminal, the air-fuel ratio sensor chip are integrally inlaid in above ceramic fixation kit, calandria and air-fuel ratio sensor
One end of chip connects, and the outside that stainless steel head protective case is mounted on air-fuel ratio sensor multichip ceramic fixation kit is located at sky
The end than sensor chip is fired, there are screw thread, stainless steel head protective case and stainless steel in outside in the middle part of the protective case of stainless steel head
The junction of stretching casing tube is equipped with hex nut, the outside of stainless steel head protective case and the inside of stainless steel stretched casing it
Between sealed plasthetic part is installed, wire harness connector is located at the inside of stainless steel stretched casing, and wire harness connector is sensed with air-fuel ratio
Device chip calandria connects, and cable harness protection sleeve is located on the outside of the end of wire harness plug-in connecting component, and connecting terminal is connect with wire harness connector,
Connecting terminal is located at the inside of cable harness protection sleeve.
The air-fuel ratio sensor chip has the zirconium oxide of stabilized with yttrium oxide, platinum, aluminium oxide, dimension stone of magnesia alumina spinel group
At multilayered structure intergrant, air-fuel ratio sensor chip be multilayered structure, mainly by 3 layers of zirconia ceramics substrate, 4 platinum
Metal electrode and layer screen-printed layers have been combined into 3 big portion of pump oxygen cell, reference cell and gas test chamber according to certain sequence
Point, the air-fuel ratio detection range of air-fuel ratio sensor is extremely wide, from 23：1 pole lean mixture is to 11：Within the scope of 1 pole rich mixture all
Can detect, air-fuel ratio sensor rear pump oxygen electric current directly proportional correspondence with the size of actual air-fuel ratio, correspondence it is linear
It is good, it is equal to chemically correct fuel (14.7 in actual air-fuel ratio：1) when, the output current of air-fuel ratio sensor is zero, when practical air-fuel
Smaller than numerical value, when gaseous mixture is dense, air-fuel ratio sensor output current is negative, empty when gaseous mixture is dilute when actual air-fuel ratio numerical value is big
Combustion is just than current output sensor.
The air-fuel ratio sensor chip interior has ceramic heater, ceramic heater to connect to form closure with calandria
Circuit, calandria are connect by wire harness connector connecting terminal with external circuit.
Compared with the prior art, the beneficial effects of the utility model are as follows：
By to air-fuel ratio sensor chip, calandria, hex nut, ceramic fixation kit, stainless steel head protective case,
The OVERALL OPTIMIZA-TION DESIGN FOR combination of stainless steel stretched sleeve, sealed plasthetic part, wire harness connector, cable harness protection sleeve, connecting terminal, system
A kind of novel air-fuel ratio sensor is produced, the wherein novel air-fuel ratio sensor of the utility model belongs to the 5th of automotive oxygen sensor
It is state-of-the-art lambda sensor currently on the market for product, there is concentration cell and pump oxygen cell, also referred to as " double cell oxygen
Sensor " compares traditional potentiometric oxygen sensor, have air-fuel ratio detection range is big, control accuracy is high, it is fast to start speed,
Response time is short, remarkable advantage with long service life, can be directly installed at engine exhaust port, and detection is straight from engine
Run in the tail gas oxygen concentration, transmits detection signal and accurately controls oil spout according to detection signal to ECU, ECU；In the utility model
Reference cell in air-fuel ratio sensor chip can generate an electricity according to test gas and with reference to the oxygen concentration difference of gas
Potential difference Vs, the Vs detected and reference voltage V b (being typically set at 450mv) is compared by electric injection system, according to the difference of the two
Value determines the direction of pump oxygen electric current Ip and size in pump oxygen cell；The air-fuel ratio detection of air-fuel ratio sensor in the utility model
Range is extremely wide, from 23：1 pole lean mixture is to 11：It can be detected within the scope of 1 pole rich mixture, the utility model can ensure
Engine can work under optimal air-fuel ratio (ratio 14.7) state, and fuel oil is made fully to burn, and to reduce oil consumption, be promoted
Power reduces the toxic gas content in exhaust emissions, achievees the effect that energy-saving and emission-reduction；It solves common concentration difference type oxygen simultaneously to pass
For sensor there are air-fuel ratio detection range is small, control accuracy is low, starts that speed is slow, and the disadvantage of response time length is suitble to send out in automobile
It is promoted the use of in motivation.
Description of the drawings
Fig. 1 is the whole horizontal cross-section structure diagram of the utility model；
Fig. 2 is outside the utility model air-fuel ratio sensor multichip ceramic heater and calandria wire harness connector connecting terminal
Portion's circuit connection circuit figure；
Fig. 3 is reference cell and pump oxygen cell operation principle schematic diagram in air-fuel ratio sensor chip.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
The every other embodiment obtained, belongs to the range of utility model protection.
The utility model is described in further detail with reference to embodiment and specific implementation mode.
A kind of novel air-fuel ratio sensor, it is characterized in that including air-fuel ratio sensor chip (10), calandria (8), hexagonal
Nut (4), ceramic fixation kit (9), stainless steel head protective case (1), stainless steel stretched sleeve (3), sealed plasthetic part (2),
Wire harness connector (7), cable harness protection sleeve (5), connecting terminal (6), the air-fuel ratio sensor chip (10) are integrally inlaid in pottery
Above, calandria (8) is connect porcelain fixation kit (9) with one end of air-fuel ratio sensor chip (10), stainless steel head protective case
(1) outside for being mounted on the ceramic fixation kit (9) of air-fuel ratio sensor chip (10) is located at air-fuel ratio sensor chip (10)
There are screw thread, stainless steel head protective case (1) and stainless steel stretched casing (3) in end, stainless steel head protective case (1) middle part outside
Junction hex nut (4), the inside in the outside and stainless steel stretched casing (3) of stainless steel head protective case (1) are installed
Between sealed plasthetic part (2) is installed, wire harness connector (7) is located at the inside of stainless steel stretched casing (3), wire harness connector
(7) it is connect with air-fuel ratio sensor chip (10) calandria (8), cable harness protection sleeve (5) is located at outside the end of wire harness plug-in connecting component (7)
Side, connecting terminal (6) are connect with wire harness connector (7), and connecting terminal (6) is located at the inside of cable harness protection sleeve (5).
The air-fuel ratio sensor chip (10) has zirconium oxide, platinum, aluminium oxide, the magnesium aluminate spinel material of stabilized with yttrium oxide
Expect the multilayered structure intergrant of composition, air-fuel ratio sensor chip (10) is multilayered structure, mainly by 3 layers of zirconia ceramics base
Piece, 4 platinum electrodes and layer screen-printed layers have been combined into pump oxygen cell (101), reference cell (103) according to certain sequence
Most of with gas test chamber (102) 3, the air-fuel ratio detection range of air-fuel ratio sensor is extremely wide, from 23：1 pole lean mixture arrives
11：Can be detected within the scope of 1 pole rich mixture, air-fuel ratio sensor rear pump oxygen electric current with actual air-fuel ratio size at just
Than correspondence, the good linearity of correspondence is equal to chemically correct fuel (14.7 in actual air-fuel ratio：1) when, air-fuel ratio sensor it is defeated
It is zero to go out electric current, and when actual air-fuel ratio numerical value is small, when gaseous mixture is dense, air-fuel ratio sensor output current is negative, when practical air-fuel
Bigger than numerical value, when gaseous mixture is dilute, air-fuel ratio sensor output current is just.
There are ceramic heater, ceramic heater to be connect with calandria (8) inside the air-fuel ratio sensor chip (10)
Closed circuit is formed, calandria (8) is connect by wire harness connector (7) connecting terminal (6) with external circuit (11).
The novel air-fuel ratio sensor of the utility model belongs to the 5th generation product of automotive oxygen sensor, is currently on the market most
There is advanced lambda sensor reference cell (103) and pump oxygen cell (101) also referred to as " double cell lambda sensor " to compare
Traditional potentiometric oxygen sensor, with air-fuel ratio detection range is big, control accuracy is high, startup speed is fast, the response time is short, makes
It with the remarkable advantage of long lifespan, can be directly installed at engine exhaust port, detect the tail gas being expelled directly out from engine
Oxygen concentration transmits detection signal and accurately controls oil spout according to detection signal to ECU, ECU；Air-fuel ratio sensor in the utility model
Reference cell (103) in chip (10) can generate a potential difference according to test gas and with reference to the oxygen concentration difference of gas
The Vs detected and reference voltage V b (being typically set at 450mv) is compared by Vs, electric injection system, according to the difference of the two come
Determine the direction of pump oxygen electric current Ip and size in pump oxygen cell (101)；The air-fuel ratio inspection of air-fuel ratio sensor in the utility model
It is extremely wide to survey range, from 23：1 pole lean mixture is to 11：It can be detected within the scope of 1 pole rich mixture, the utility model can be true
Protecting engine can work under optimal air-fuel ratio (ratio 14.7) state, so that fuel oil is fully burnt, to reduce oil consumption, carry
Power is risen, the toxic gas content in exhaust emissions is reduced, achievees the effect that energy-saving and emission-reduction；Solves common concentration difference type oxygen simultaneously
For sensor there are air-fuel ratio detection range is small, control accuracy is low, starts that speed is slow, and the disadvantage of response time length is suitble in automobile
It is promoted the use of on engine.
Above-described is only preferred embodiments of the present invention, it is noted that for the ordinary skill of this field
For personnel, without departing from the concept of the present invention, various modifications and improvements can be made, these all belong to
In the scope of protection of the utility model.
Claims (3)
1. a kind of novel air-fuel ratio sensor, it is characterized in that including air-fuel ratio sensor chip, calandria, hex nut, ceramics
Fixation kit, stainless steel stretched sleeve, sealed plasthetic part, wire harness connector, cable harness protection sleeve, connects stainless steel head protective case
Line terminals, the air-fuel ratio sensor chip are integrally inlaid in above ceramic fixation kit, calandria and air-fuel ratio sensor core
One end of piece connects, and the outside that stainless steel head protective case is mounted on air-fuel ratio sensor multichip ceramic fixation kit is located at air-fuel
Than the end of sensor chip, outside has screw thread, stainless steel head protective case to be drawn with stainless steel in the middle part of the protective case of stainless steel head
The junction for stretching casing is equipped with hex nut, between the outside and the inside of stainless steel stretched casing of stainless steel head protective case
Sealed plasthetic part is installed, wire harness connector is located at the inside of stainless steel stretched casing, wire harness connector and air-fuel ratio sensor
Chip calandria connects, and cable harness protection sleeve is located on the outside of the end of wire harness plug-in connecting component, and connecting terminal connect with wire harness connector, connects
Line terminals are located at the inside of cable harness protection sleeve.
2. a kind of novel air-fuel ratio sensor according to claim 1, it is characterised in that the air-fuel ratio sensor chip
The multilayered structure intergrant being made of the zirconium oxide of stabilized with yttrium oxide, platinum, aluminium oxide, dimension stone of magnesia alumina spinel, air-fuel ratio sensing
Device chip is multilayered structure, mainly by 3 layers of zirconia ceramics substrate, 4 platinum electrodes and layer screen-printed layers according to one
It is fixed to be sequentially combined into 3 major part of pump oxygen cell, reference cell and gas test chamber.
3. a kind of novel air-fuel ratio sensor according to claim 1, it is characterised in that the air-fuel ratio sensor chip
Inside has ceramic heater, ceramic heater to connect to form closed circuit with calandria, and calandria passes through wire harness connector wiring
Terminal is connect with external circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820145486.1U CN207908427U (en) | 2018-01-29 | 2018-01-29 | A kind of novel air-fuel ratio sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820145486.1U CN207908427U (en) | 2018-01-29 | 2018-01-29 | A kind of novel air-fuel ratio sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207908427U true CN207908427U (en) | 2018-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820145486.1U Expired - Fee Related CN207908427U (en) | 2018-01-29 | 2018-01-29 | A kind of novel air-fuel ratio sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207908427U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709137A (en) * | 2018-12-28 | 2019-05-03 | 湖北雷迪特冷却系统股份有限公司 | A kind of cell water cold plate temperature uniformity test device and method |
-
2018
- 2018-01-29 CN CN201820145486.1U patent/CN207908427U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709137A (en) * | 2018-12-28 | 2019-05-03 | 湖北雷迪特冷却系统股份有限公司 | A kind of cell water cold plate temperature uniformity test device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180925 |