CN101294890A - Carbon black particulate sensor - Google Patents
Carbon black particulate sensor Download PDFInfo
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- CN101294890A CN101294890A CNA2008101224964A CN200810122496A CN101294890A CN 101294890 A CN101294890 A CN 101294890A CN A2008101224964 A CNA2008101224964 A CN A2008101224964A CN 200810122496 A CN200810122496 A CN 200810122496A CN 101294890 A CN101294890 A CN 101294890A
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Abstract
The invention discloses a carbon black particle sensor, which comprises an outer shell and an induction main body enclosed inside the outer shell. The induction main body comprises a ceramic substrate and two conductance induction electrodes arranged oppositely on the front end surface of the ceramic substrate at intervals; a heating device is arranged on the ceramic substrate at the same end as the conductance induction electrodes; and a connecting conductor, one end of which is connected with the conductance induction electrodes and the heating device, and the other end of which is electrically connected with an external lead, is arranged on the ceramic substrate. The sensor has the advantages of solidness, durability and long service life, and can be directly installed on an automobile exhaust pipe to be adapted to the adverse working environment of the automobile, thereby measuring the carbon black particle sensor content of tail gas through a tail gas treating system, so as to ensure compliance with environmental requirements for the carbon black particles in the tail gas emitted by the automobile.
Description
Technical field
The present invention relates to a kind of carbon black particulate sensor, especially design a kind of carbon black particulate sensor that is used for measuring diesel car tail gas carbon black particle content.
Background technology
The work efficiency of diesel motor is petrolic about 1.3 times, preferentially adopts diesel motor will help to reduce energy resource consumption at automotive field, reduces greenhouse gas emission, allows user vehicle pay wages at the surging present fuel oil that can significantly reduce of oil price.The environmental pollution of using diesel car to produce is light than petrol engine, but also can produce carbon black particle (PM) and oxynitrides (NO
x), the carbon black particle in the tail gas causes people's lung and breathing problem easily, and oxynitrides easily forms acid rain in air, and these new pollutions need be solved.The formation major part of carbon black particle is a carbon, and its molecular carbon/hydrogen that comprises (C/H) ratio is between 4～11, and it is connected to form for being close to spherical particulate, can eliminate by the carbon black particle filtrator.Simultaneously, onboard diagnostic system needs the one or more carbon black particulate sensors that can accurately measure carbon black particle concentration, to guarantee whether the carbon black particle emission in the vehicle exhaust disposal system Control of Automobile tail gas meets environmental protection standard, diesel motor also needs carbon black particulate sensor to measure the content of carbon black particle in vehicle exhaust, thereby by adjusting the content that the diesel motor duty reduces carbon black particle in the exhaust emissions.
Domesticly mainly contain filter type smokemeter and two kinds of carbon black particulate sensors of delustring formula smokemetor, but only limit to survey, error is big and the life-span is very limited, does not therefore possess the condition of practical and industrialization.
The method of foreign study roughly can reduce two kinds:
First kind of research method is to adopt so-called high pressure plasma technology, because carbon black particle is charged particulate, laterally apply high voltage by two electrodes at the vehicle exhaust pipeline, can deceive particulate and make carbon black particle on electrode, discharge by the absorption band electrical carbon, thereby can measure the content of carbon black particle by the electric current that passes through between real-time measurement positive and negative electrode;
Second kind of research method is to measure the content of carbon black particle by the method for optoacoustic, its principle is the laser beam irradiation vehicle exhaust that can modulate by intensity, but carbon black particle can produce heat after absorbing light modulated, the variation of this heat can produce the variation of air pressure, and this variation that microphone receives is by obtaining the data of carbon black particle content after handling.
But first method needs high voltage, the technology relative complex; Second method measuring accuracy height, but technology more complexity and sensor life-time under abominable automobile environment for use, limitation is arranged, only be suitable for making in laboratory.
Summary of the invention
The purpose of this invention is to provide a kind of carbon black particulate sensor, it is sturdy and durable, life-span is long, can adapt to the automobile bad working environment and be directly installed on the vehicle exhaust pipeline, and then measurement is through the carbon black particle content of tail gas behind the exhaust treatment system, with the carbon black particle content compliance with environmental protection requirements of guaranteeing to discharge in the tail gas.
Technical scheme of the present invention is: a kind of carbon black particulate sensor, comprise shell and be coated on the interior induction main body of shell, described induction main body comprises ceramic substrate and leads induction electrode in two electricity that the ceramic substrate front end surface is oppositely arranged at interval, lead induction electrode with electricity on the described ceramic substrate and be provided with heating arrangement with end, be provided with also on the described ceramic substrate that an end is led induction electrode with electricity respectively and heating arrangement is electrically connected, the bonding conductor that the other end is electrically connected with outer lead.
The further technical scheme of the present invention is: a kind of carbon black particulate sensor, comprise shell and be coated on the interior induction main body of shell, described induction main body comprises ceramic substrate and leads induction electrode in two electricity that the ceramic substrate front end surface is oppositely arranged at interval, lead induction electrode with electricity on the described ceramic substrate and be provided with heating arrangement with end, be provided with also on the described ceramic substrate that an end is led induction electrode with electricity respectively and heating arrangement is electrically connected, the bonding conductor that the other end is electrically connected with outer lead; Described ceramic substrate is the AL of the rectangular column bodily form
2O
3Ceramic substrate, described electricity is led induction electrode for referring to the pair of electrodes of cross-distribution, described electricity is led induction electrode and is deposited on ceramic substrate front end one side surface, described heating arrangement is to be located at ceramic substrate front end and electric platinum heater strip of leading the relative opposite side of induction electrode, and described platinum heater strip silk-screen is located in ceramic substrate inside; Described bonding conductor is deposited on the ceramic substrate, and described ceramic substrate tail end leads with electricity respectively that induction electrode and heating arrangement are corresponding to be provided with two pairs of external terminals, and described bonding conductor is electrically connected with outer lead by external terminal; Described shell comprises the protective cover that covers at the ceramic substrate front end, has the eyelet for the carbon black particle turnover on the described protective cover.
Advantage of the present invention is:
1. the present invention is sturdy and durable, its mission life can reach 8 years or automobilism more than 150,000 kilometers, can adapt to the automobile bad working environment and be directly installed on the carbon black particle content behind the measurement process exhaust treatment system on the vehicle exhaust pipeline, with the carbon black particle content compliance with environmental protection requirements of guaranteeing to discharge in the tail gas.
2. the experiment proved that induction main body of the present invention can be adsorbed in the carbon black particle in the vehicle exhaust two electricity according to the thermophoresis absorption principle and lead between the induction electrode, the sensor response time is short, reaction is very rapid.
3. whether the information of the carbon black particle content that the present invention detected can offer onboard diagnostic system by the LAN system (CAN) of automobile, can work on the carbon black particle filtrator of monitoring exhaust treatment system.
Description of drawings
Fig. 1 is an installation site of the present invention synoptic diagram;
Fig. 2 is the side view of the induction main body of the specific embodiment of the invention;
Fig. 3 is the vertical view of the induction main body of the specific embodiment of the invention;
Fig. 4 is the finger crossed electrode synoptic diagram of the specific embodiment of the invention;
Fig. 5 is the structural representation of the specific embodiment of the invention;
Fig. 6 is the shell synoptic diagram of the specific embodiment of the invention.
Wherein: 1 shell, 2 ceramic substrates, 3 electricity are led induction electrode 4 heating arrangements 5 bonding conductors; 6 outer leads, 7 protective covers, 8 external terminals, 9 carbon black particle filtrators, 10 gas outlets, 11 carbon black particulate sensors.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described:
Embodiment: extremely shown in Figure 6 as Fig. 2, a kind of carbon black particulate sensor 11, comprise high temperature resistant stainless steel shell 1 and the induction main body that is coated in the shell 1, wherein shell 1 can use the shell of other carbon black meagre profit sensors in the existing technology, described induction main body comprises ceramic substrate 2 and leads induction electrode 3 in two electricity that refer to cross-distribution that ceramic substrate 2 front end surface are oppositely arranged at interval, lead induction electrode 3 with electricity on the described ceramic substrate 2 and be provided with heating arrangement 4 with end, described ceramic substrate 2 is the AL of the rectangular column bodily form
2O
3Ceramic substrate, described electricity are led induction electrode 3 and are deposited on ceramic substrate 2 front ends one side surface, and described heating arrangement 4 is for being located at ceramic substrate 2 front ends and electric platinum heater strip of leading the relative opposite side of induction electrode 3.Electricity is led induction electrode 3 and is used to measure two electricity between the electrode and leads size, and heating arrangement 4 be used for will accumulation on the ceramic substrate 2 the carbon black particle burning dispose.Measure what of carbon black particle by the size led of electricity between the potential electrode, what of carbon black particle are directly proportional with size that electricity is led
Described electricity is led induction electrode 3 and the platinum heater strip method by silk-screen and is prepared on the ceramic substrate 2, and wherein platinum heater strip silk-screen is located in ceramic substrate 2 internal layers and electricity and leads induction electrode 3 and be arranged in parallel.In general, the zone of platinum heater strip silk-screen on ceramic substrate 2 is larger than the zone that electricity is led induction electrode 3, so that the burning of temperature equalization, carbon black particle fully.Here responding to the consistance of main part ceramic substrate will get well, and the selection requirement of organic material and stupalith thermal behavior in drying course are complementary in the preparation process.
Also be provided with the bonding conductor 5 that is deposited on the ceramic substrate 2 on the described ceramic substrate 2, described ceramic substrate 2 tail ends lead with electricity respectively that induction electrode 3 and heating arrangement 4 are corresponding to be provided with two pairs of external terminals 8, described bonding conductor 5 is electrically connected with outer lead 6 by external terminal 8, and outer lead 6 picks out from the afterbody of shell 1.Wherein electricity is led induction electrode 3 and is connected on the conductance measurement instrument of external circuit to record the electricity that electricity leads between the induction electrode 3 and leads variation, and platinum heater strip two ends link to each other with the battery supply and the heating controller of outside, and heating controller can be led the folding that the resistance signal is controlled the heating power supply switch by the electricity that the conductance measurement instrument records.
Described shell 1 comprises the protective cover 7 that covers at ceramic substrate 2 front ends, has the eyelet for the carbon black particle turnover on the described protective cover 7.Can design the density size of eyelet as required, if the carbon black particle that need enter is more fast, the protective cover 7 that then can adopt the metallic shield net of front opening to surround generally for the sensor that the is arranged on carbon black particle filtrator 9 downstreams protective covers 7 that adopt this form more; The carbon black particle that enters sensor if desired lacks some slowly, then can adopt metal cap, and aperture is set on metal cap then as required, and the sensor of operated by rotary motion in carbon black particle filtrator 9 upstreams tends to adopt the protective cover 7 of this form.
The carbon black particulate sensor 11 of present embodiment is installed on the vehicle exhaust gas outlet 10; as shown in Figure 1; because there are a bigger temperature difference in vehicle exhaust and external environment; thereby the sensor sensing body temperature is lower than exhaust temperature; according to the thermophoresis absorption principle; carbon black particle in the vehicle exhaust can be adsorbed on two finger-fork type electricity and lead between the induction electrode 3, leads between the induction electrode 3 size that electricity leads and measures what of carbon black particle content in vehicle exhaust by measuring electricity.Carbon black particulate sensor 11 operating temperature ranges are-20 ℃ to 400 ℃, the scope of input voltage is between 10-16V, output voltage is 0-5V, and heater strip will guarantee that the temperature that can heat carbon black particulate sensor 11 induction main parts will reach more than 600 degree at least.
During work, during tail gas process carbon black particulate sensor 11, carbon black particle is led induction electrode 3 absorption by electricity, and it is many more that carbon black particle deposits, resistance between two electrodes is more little, electricity is led big more, lead when rising to a certain setting value when electricity and (can realize contrast by comparer), heating controller provides a signal, makes the heating power supply switch closure, this moment, heating arrangement 4 began heating, make the carbon black particle vaporization, disconnect behind the heating power supply switch closure certain hour, recycle is measured next time.
The present invention is sturdy and durable, life-span is long, can adapt to the automobile bad working environment and be directly installed on the vehicle exhaust pipeline, and then measure carbon black particle content, with the carbon black particle content compliance with environmental protection requirements of guaranteeing to discharge in the tail gas through tail gas behind the exhaust treatment system.
Claims (4)
1. carbon black particulate sensor, comprise shell (1) and be coated on the interior induction main body of shell (1), it is characterized in that: described induction main body comprises ceramic substrate (2) and leads induction electrode (3) in two electricity that ceramic substrate (2) front end surface is oppositely arranged at interval, described ceramic substrate (2) is gone up and to be led induction electrode (3) with electricity and be provided with heating arrangement (4) with holding, be provided with also on the described ceramic substrate (2) that an end is led induction electrode (3) with electricity respectively and heating arrangement (4) is electrically connected, some bonding conductors (5) that the other end is electrically connected with outer lead (6).
2. carbon black particulate sensor according to claim 1 is characterized in that: described ceramic substrate (2) is the AL of the rectangular column bodily form
2O
3Ceramic substrate, described two electricity are led induction electrode (3) for referring to the pair of electrodes of cross-distribution, described electricity is led induction electrode (3) and is deposited on ceramic substrate (2) front end one side surface, described heating arrangement (4) is led the platinum heater strip of the relative opposite side of induction electrode (3) for being located at ceramic substrate (2) front end and electricity, and described platinum heater strip silk-screen is located in ceramic substrate (2) internal layer.
3. carbon black particulate sensor according to claim 1, it is characterized in that: described bonding conductor (5) is deposited on the ceramic substrate (2), described ceramic substrate (2) tail end is led induction electrode (3) and the corresponding two pairs of external terminals (8) that are provided with of heating arrangement (4) with electricity respectively, and described bonding conductor (5) is electrically connected with outer lead (6) by external terminal (8).
4. carbon black particulate sensor according to claim 1 is characterized in that: described shell (1) comprises the protective cover (7) that covers at ceramic substrate (2) front end, has the eyelet for the carbon black particle turnover on the described protective cover (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101224964A CN101294890A (en) | 2008-05-30 | 2008-05-30 | Carbon black particulate sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101224964A CN101294890A (en) | 2008-05-30 | 2008-05-30 | Carbon black particulate sensor |
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| CN101294890A true CN101294890A (en) | 2008-10-29 |
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| CNA2008101224964A Pending CN101294890A (en) | 2008-05-30 | 2008-05-30 | Carbon black particulate sensor |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072850A (en) * | 2009-11-06 | 2011-05-25 | 罗伯特·博世有限公司 | Particle sensor |
| CN102399085A (en) * | 2011-10-27 | 2012-04-04 | 扬州高能新材料有限公司 | Pre-melting crystallization method for high-purity alpha-alumina |
| CN102608166A (en) * | 2011-01-20 | 2012-07-25 | 福特环球技术公司 | Particle sensor, exhaust system and method for determining particles in the exhaust gas |
| CN104024589A (en) * | 2011-10-26 | 2014-09-03 | 丰田自动车株式会社 | Device for controlling internal combustion engine |
| CN105074421A (en) * | 2013-03-06 | 2015-11-18 | 贺利氏传感技术有限公司 | Method for producing a soot sensor with a laser beam |
| CN102797545B (en) * | 2011-05-25 | 2016-07-06 | 福特环球技术公司 | Use the emission control of particulate matter detection sensor |
| CN102072850B (en) * | 2009-11-06 | 2016-12-14 | 罗伯特.博世有限公司 | Particle sensor |
| CN106461529A (en) * | 2014-06-16 | 2017-02-22 | 株式会社电装 | Particulate matter detection sensor |
| CN116183682A (en) * | 2023-02-23 | 2023-05-30 | 广州海谷电子科技有限公司 | Patch type VOC sensor and manufacturing method thereof |
-
2008
- 2008-05-30 CN CNA2008101224964A patent/CN101294890A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072850A (en) * | 2009-11-06 | 2011-05-25 | 罗伯特·博世有限公司 | Particle sensor |
| US8800350B2 (en) | 2009-11-06 | 2014-08-12 | Robert Bosch Gmbh | Particle sensor |
| CN102072850B (en) * | 2009-11-06 | 2016-12-14 | 罗伯特.博世有限公司 | Particle sensor |
| CN102608166A (en) * | 2011-01-20 | 2012-07-25 | 福特环球技术公司 | Particle sensor, exhaust system and method for determining particles in the exhaust gas |
| CN102797545B (en) * | 2011-05-25 | 2016-07-06 | 福特环球技术公司 | Use the emission control of particulate matter detection sensor |
| CN104024589A (en) * | 2011-10-26 | 2014-09-03 | 丰田自动车株式会社 | Device for controlling internal combustion engine |
| CN104024589B (en) * | 2011-10-26 | 2016-09-28 | 丰田自动车株式会社 | The control device of internal combustion engine |
| CN102399085A (en) * | 2011-10-27 | 2012-04-04 | 扬州高能新材料有限公司 | Pre-melting crystallization method for high-purity alpha-alumina |
| CN105074421A (en) * | 2013-03-06 | 2015-11-18 | 贺利氏传感技术有限公司 | Method for producing a soot sensor with a laser beam |
| CN106461529A (en) * | 2014-06-16 | 2017-02-22 | 株式会社电装 | Particulate matter detection sensor |
| CN116183682A (en) * | 2023-02-23 | 2023-05-30 | 广州海谷电子科技有限公司 | Patch type VOC sensor and manufacturing method thereof |
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Effective date of registration: 20081205 Address after: Postal code 72, Yushan Road, New District, Jiangsu, Suzhou: 215011 Applicant after: Suzhou Penn power supply Co., Ltd. Co-applicant after: Suzhou Lily Electronics Co., Ltd. Address before: Postal code 72, Yushan Road, New District, Jiangsu, Suzhou: 215011 Applicant before: Suzhou Binte Power Supply Co., Ltd. |
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Open date: 20081029 |