CN205749206U - A kind of gasoline automobile exhaust emissions detection system of particles - Google Patents

A kind of gasoline automobile exhaust emissions detection system of particles Download PDF

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Publication number
CN205749206U
CN205749206U CN201620231853.0U CN201620231853U CN205749206U CN 205749206 U CN205749206 U CN 205749206U CN 201620231853 U CN201620231853 U CN 201620231853U CN 205749206 U CN205749206 U CN 205749206U
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China
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tail gas
pipeline
particulate matter
exhaust emissions
particles
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Chinese (zh)
Inventor
储江伟
彭敏
李洪亮
崔鹏飞
段超
王旭
王浩淞
张新宾
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Northeast Forestry University
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Northeast Forestry University
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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Abstract

A kind of gasoline automobile exhaust emissions detection system of particles, belongs to motor vehicle exhaust emission pollution and control field, is made up of Tail gas measuring part and post processing part two parts.Wherein, Tail gas measuring part is measured pipeline by diluent air pretreatment pipeline, tail gas pretreatment pipeline and mixed diluting and is formed, and completes air and the mixed diluting of tail gas and the measurement of particulate matter, aerofluxus automatically after having detected;Post processing part is made up of signal adapter and digital indicator, and the signal completing testing result converts and Explicit Expression.Detecting system can detect the particulate matter mass concentration of the different-grain diameter scope of different displacements gasoline automobile exhaust emissions, number concentration in real time and form concentration and the physical state of tested tail gas of the relevant tail gas discharging pollutant of conversion with particulate matter, including temperature, humidity, pressure.And based on this system detection data, evaluation detection emission from vehicles particulate matter situation, and the particulate matter of estimation distance travelled discharge.

Description

A kind of gasoline automobile exhaust emissions detection system of particles
Technical field
Needed for this utility model belongs to the gasoline automobile Tail gas measuring in motor vehicle exhaust emission pollution and control field Exhaust emissions detection system of particles, relates to a kind of gasoline automobile exhaust emissions detection system of particles.
Background technology
21 century, atmospheric pollution situation becomes increasingly serious, and haze weather frequently occurs, and has had a strong impact on the production of people Life and the health of the mankind.The quantity of private car, multiple industry transport vehicle and utility car is significantly increased so that the guarantor of motor vehicles The amount of having sharply increases, and the impact on atmospheric environment is on the rise.Especially in city, the discharge of motor vehicles particulate matter is to cause mist The arch-criminal of haze phenomenon.The occupancy volume of gasoline car is much larger than diesel vehicle and hybrid vehicle and electric motor car, as particulate matter The vehicle exhaust of one of polluter, the discharge of gasoline car has direct relation.
Although in GB 18352.5 2013, for light-duty vehicle contaminant particle material amount discharge measuring and number of particles Discharge measuring gives commending system, but due to sampling and detection equipment, technology and the shortage of method, arranges vehicle exhaust at present The situation putting particulate matter cannot be segmented and quantify always, more lacks the applicable gasoline automobile exhaust emissions particulate matter of one and examines in real time The system surveyed.
Summary of the invention
The purpose of this utility model is that providing a kind of can detect different displacements gasoline automobile exhaust emissions not in real time Form other relevant tail gas of conversion with particulate matter arrange with particulate matter mass concentration M (D), number concentration N (D) of particle size range Put pollutant (CO, CxHy, NOX、SO2) concentration M (x) and tested tail gas be filled with the thing of designed constant temperature and humidity measuring chamber Reason state, including temperature T, humidity R, the system of pressure value P.And based on this system measurement data, evaluation detection car Exhaust emissions particulate matter situation, and the particulate matter of estimation distance travelled discharge.
The technical solution adopted in the utility model and operation principle be: described gasoline automobile exhaust emissions granule quality testing Examining system is made up of Tail gas measuring part and post processing part two parts.Described gasoline automobile exhaust emissions particulate matter detection System Tail gas measuring part is measured three pipelines of pipeline by diluent air pretreatment pipeline, tail gas pretreatment pipeline and mixed diluting Composition.
Described diluent air pretreated tube route air intake, Auto-drainage oil water separator, filter, mist of oil separation Device, exsiccator, the first thermoregulator, air flow straightener, flow control valve, pressure regulator valve, manostat, first-class gauge and cut-off Valve forms.Temperature survey table, moisture measurement table and pressure measuring instrument are set inside air flow straightener.Complete the filtration of air, do Dry, homoiothermic, carries out flow-control and current stabilization, and the control of pressure and voltage stabilizing so that air becomes and has the permissible of rated condition The clean air of dilution tail gas.Realize the most controlled to mixed diluting device input air.
Described tail gas pretreated tube route gas inlet, heater, the second thermoregulator, second gauge, locates in advance Reason tail gas flow straightener and stop valve composition.Pressure measuring instrument, moisture measurement table and temperature are set inside pretreatment tail gas flow straightener Measure table.Complete gasoline automobile tail gas homoiothermic, and carry out flow, pressure, temperature, hygrometry.Realize whether inputting tail gas Controlled.
Described mixed diluting measure pipeline by mixed diluting device, constant temperature and humidity measuring chamber, second gauge, vacuum pump, Two check valves and two stop valve compositions.Constant temperature and humidity measuring chamber uses capsule-type, and inside arranges pressure measuring instrument, humidity is surveyed Scale, temperature survey table, particulate matter quality measurement of concetration table, particulate matter quantity measurement of concetration table and car exhaust gas composition are surveyed Amount instrument.Complete the mixed diluting of clean air and pretreatment tail gas, and the measurement of exhaust emissions particulate matter.And will complete once The working line gas of detection is drained only, prepares for detection next time.
Described gasoline automobile exhaust emissions detection system of particles post processing part is by signal adapter and digital Indicator forms.The signal completing testing result converts and Explicit Expression.
The technical scheme that the utility model proposes provides the benefit that: first, and data measured is comprehensive, can detect difference simultaneously Particle size range particulate matter mass concentration, number concentration and other tail gas discharging pollutants forming conversion relevant with particulate matter are dense Degree, measures exhaust particulate thing particle size range and divides thinner, can enter one from number concentration and mass concentration relation therebetween By measurement result, step explanation exhaust particulate thing emission behaviour, estimates that this detection emission from vehicles is to the generation that reacts in air Particulate matter situation in secondary pollution;Second, constant temperature and humidity measuring chamber uses capsule-type, and engine discharging tail gas can be made to collect energy Reaching steady statue in the shortest time, accuracy of detection is high;3rd, divide and have two kinds of measurement patterns, dilution measurement pattern and directly survey Amount pattern, after contrast dilution and is not diluted processing the difference of testing result, and cannot be carried out before can carrying out much grinds Study carefully;4th, it is not necessary to particulate matter sheer, it is not required that change filter paper, only need timing to reset, automatic aerofluxus can be realized, detection System structure volume is reasonable, decreases the space shared by measurement system, accurately and repeatably detects;5th, real-time dynamicly Show tested motor vehicle exhaust emission particulate matter situation, it is achieved estimation is with the particulate matter of distance travelled discharge under different speeds automatically.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings this utility model is described in further detail:
Accompanying drawing 1 is gasoline automobile exhaust emissions detection system of particles agent structure block diagram of the present utility model;
Accompanying drawing 2 is gasoline automobile exhaust emissions detection system of particles schematic diagram of the present utility model;
Accompanying drawing 3 is gasoline automobile exhaust emissions detection system of particles operation principle block diagram of the present utility model;
Accompanying drawing 4 is constant temperature and humidity measuring chamber cut-away view of the present utility model;
Accompanying drawing 5 is constant temperature and humidity measuring chamber schematic shapes of the present utility model;
In figure, 1 is air intake;2 is Auto-drainage oil water separator;3 is filter;4 is oil mist separator;5 is dry Dry device;6 is the first thermoregulator;7 is flow control valve;8 is pressure regulator valve;9 is manostat;10 first-class gauge;11 is One stop valve;12 is gas inlet;13 second stop valves;14 is heater;15 is the second thermoregulator;16 second flows Meter;17 is the first check valve;18 the 3rd stop valves;19 is the 3rd effusion meter;20 is the second check valve;21 the 4th stop valves;22 For vacuum pump;23 is the first temperature survey table;24 is the first moisture measurement table;25 is the first pressure measuring instrument;26 is the second pressure Power measures table;27 is the second moisture measurement table;28 is the second temperature survey table;29 is the 3rd pressure measuring instrument;30 is the 3rd wet Degree measures table;31 is the 3rd temperature survey table;32 is particulate matter quality measurement of concetration table;33 is particulate matter quantity measurement of concetration Table;34 is car exhaust gas composition measurement instrument;35,36,37,38,39,40 is output signal;41 is signal adapter;42 For digital indicator;43 is air flow straightener;44 is pretreatment tail gas flow straightener;45 is mixed diluting device;46 is that constant temperature is permanent Wet measuring chamber.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the technical scheme in this utility model embodiment is clearly fully described by.
As it is shown in figure 1, gasoline automobile exhaust emissions detection system of particles described in the utility model is by Tail gas measuring Part and post processing part two parts form;Described gasoline automobile exhaust emissions detection system of particles Tail gas measuring part Measured three pipelines of pipeline by diluent air pretreatment pipeline, tail gas pretreatment pipeline and mixed diluting again to form, complete tail gas Mixed diluting and particulate matter measure, and automatically aerofluxus;Described post processing part is by signal adapter and digital indicator Composition.The signal completing testing result converts and Explicit Expression.
The content of display includes: particulate matter mass concentration M (D), number concentration N (D), pollutant CO, CxHy、NOx、SO2's Concentration and tested exhaust temperature T, humidity R, pressure value P and the particulate matter mass concentration S (D of mileage dischargem), number concentration S (Dn)。
In described post processing part, below equation estimation is with the particulate matter of distance travelled discharge under different speeds:
S ( D m ) = Q P · n 2 · 60 v · M ( D ) · 10 - 3
S ( D n ) = Q P · n 2 · 60 v · N ( D ) · 10 - 3
In formula: S (Dm) it is particulate matter mileage mass concentration, μ g/Km;S(Dn) it is particulate matter mileage number concentration, Counts/ Km;QPFor automobile discharge capacity, L;N is engine speed, r/min;V is speed, Km/h;M (D) is particulate matter mass concentration, μ g/m3; N (D) is particulate matter number concentration, Counts/m3
Shown in Fig. 2, Fig. 3, gasoline automobile exhaust emissions detection system of particles described in the utility model is used for The air of dilution tail gas is entered diluent air pretreatment pipeline by air intake 1, first passes through Auto-drainage oil water separator 2, will Moisture, oil point and dust in air carry out separating thus realize the preliminary purification to air;Again through filter 3, separate moisture, Impurity screening;Utilize oil mist separator 4 to separate 0.3~5 μm aerosol elaioleucites that filter is difficult to separate and more than 0.3 The rust end of μm, carbon granule etc.;Final dryer 5, removes the steam that preliminary evolution successor is contained further, completes diluent air Filtration drying.
Clean air through filtration drying flows into air flow straightener 43 after the first thermoregulator 6 homoiothermic, and air is steady The stream the first pressure measuring instrument 25 within device 43 measures clean air initial pressure, feeds back to pressure regulator valve 8;First moisture measurement table 24 measure the dried humidity of clean air, feed back to the first thermoregulator 6;Clean air temperature measured by first temperature survey table 23 Degree, feeds back to the first thermoregulator 6.The air flowed out by air flow straightener 43 controls flow through flow control valve 7, through pressure regulation Valve 8 regulates pressure, after need manostat 9 voltage stabilizing, measure output flow through first-class gauge 10, the first stop valve 11 by detection line Line state controls opening and closing, with cut-off to mixed diluting device input air.
Vehicle exhaust is flowed into through gas inlet 12 by probe tube drain, and the steam in tail gas can liquefy, tail gas Humidity increases, and can cause detected value and the actual value the most deviation of particulate matter.In order to ensure the temperature and humidity of tail gas, system First use heater 14 that tail gas is heated;After by the second thermoregulator 15 homoiothermic;Add hot exhaust gas and be filled with survey tail gas current stabilization Device 44, arranges the second pressure measuring instrument 26 and measures tail gas initial pressure inside it, this force value determines the regulation dilution of pressure regulator valve 8 The pressure of air;Second moisture measurement table 27 is measured tail gas and is entered humidity value after pretreatment tail gas flow straightener 44, and humidity value feeds back To heater 14;Second temperature survey table 28 thermometric, feeds back to the second thermoregulator 15.Second gauge 16 is measured by advance Reason tail gas flow straightener 44 flows out pretreatment exhaust flow, and this flow value determines the flow controlling diluent air of flow control valve. Closing pipe line when second stop valve 13 controls whether input tail gas and need upon completion of the assays to be exhausted.
In order to ensure to dilute precision, after dilution, flowing gas state should keep constant, and detection position should be taken at air and tail Gas be sufficiently mixed after place.Mixed diluting device 45 is just used to make clean air and the tail gas of diluent air pretreatment pipeline The pretreatment tail gas of pretreatment pipeline dilutes determining thinner ratio before carrying out detection, mixed uniformly;Tail gas mix homogeneously to be measured After flow through the first check valve 17 and enter system total working room constant temperature and humidity measuring chamber 46, treat that the 3rd effusion meter 19 registration is stable, table Show that tail gas to be measured has been uniformly filled in measuring chamber, now internal the 3rd pressure measuring instrument the 29, the 3rd moisture measurement arranged of measuring chamber Table the 30, the 3rd temperature survey table 31, particulate matter quality measurement of concetration table 32, particulate matter quantity measurement of concetration table 33 and motor vehicle emission Exhaust gas component measuring instruments 34 proceeds by measurement, and they distinguish output signal 35, output signal 36, output signal 37, output Signal 38, output signal 39 and output signal 40, through signal adapter 41 inverted signal, are shown detection by digital indicator 42 The data obtained, detection completes.
After having detected, tested tail gas goes out 46 points of two air flues of constant temperature and humidity measuring chamber, and wherein one article of air flue arranges the 3rd Stop valve 18 is followed by the 3rd effusion meter 19 and measures from flowing out constant temperature and humidity measuring chamber 46 blender flow value, and the second check valve 20 is prevented Only extraneous air blows back into measuring chamber;Another article air flue connects vacuum pump 22 through the 4th stop valve 21.
System works, and first stop valve the 11, second stop valve 13 and the 3rd stop valve 18 do not dam, the 4th stop valve 21 sections Stream;Detecting complete, first stop valve the 11, second stop valve 13 and the 3rd stop valve 18 dam, and the 4th stop valve 21 does not dams, empty Source of the gas stopping input air, tail gas pretreatment pipeline and mixed diluting measurement pipeline, in closing space, will be detected tail by vacuum pump Gas is drained only, and pipeline is vacuum state, prepares for next detection car, prevents the car from affecting the detection of next car Value, causes error.
Gasoline automobile exhaust emissions detection system of particles described in the utility model divides two kinds of measurement patterns, dilution Measurement pattern and direct measurement pattern.Process is complete dilution measurement pattern as described in Figure 2, and direct measurement pattern is different from Dilution measurement pattern is just not to be diluted aerofluxus, i.e. mixed diluting measurement pipeline does not works, such as work in dotted line frame in Fig. 3 Make engineering.
The flow value Q recorded by tail gas pretreatment pipeline second flow meter 161Set with pretreatment tail gas flow straightener 44 inside The pressure value P that the second pressure measuring instrument 26 put is measured1, output feedback signal, control the flow of diluent air pretreatment pipeline Control valve 7 and pressure regulator valve 8, pressure regulator valve 8 regulates clean air pressure P2, flow control valve 7 controls to enter clean air flow Q2, Thus thinner ratio:
q = Q 1 Q 1 + Q 2 · 100 %
In formula: q is thinner ratio;Q1For tail gas pretreatment piping flow, m3/h;Q2For diluent air pretreatment piping flow, m3/h。
Gasoline automobile exhaust emissions detection system of particles thinner ratio described in the utility model is 10~15%.
As shown in Figure 4, Figure 5, constant temperature and pressure measuring chamber described in the utility model uses capsule-type.Utilize relevant during design Software carries out internal smooth sunykatuib analysis to difformity detection device, contrasts shape, volume, entrance, input flow rate Engine discharging tail gas is collected and the impact of Detection results.Have chosen capsule-type is collection device shape, after again collect dress Select optimum position in putting and arrange the 3rd pressure measuring instrument the 29, the 3rd moisture measurement table the 30, the 3rd temperature survey table 31, particulate matter Mass concentration measures table 32, particulate matter quantity measurement of concetration table 33 and car exhaust gas composition measurement instrument 34 so that system The concentration of particulate matter in motor-vehicle tail-gas can be detected fast and accurately.
Although preferred embodiment of the present utility model being described above in association with accompanying drawing, but this utility model being not limited to Above-mentioned detailed description of the invention, above-mentioned detailed description of the invention is only exemplary rather than determinate, the common skill of this area Art personnel, under enlightenment of the present utility model, on the premise of this utility model objective and claim, can make Represent as multiple types, within such conversion each falls within protection domain of the present utility model.

Claims (7)

1. a gasoline automobile exhaust emissions detection system of particles, includes Tail gas measuring part and post processing part, institute State Tail gas measuring part and measured three pipeline groups of pipeline by diluent air pretreatment pipeline, tail gas pretreatment pipeline and mixed diluting Become;Described post processing part is made up of signal adapter and digital indicator;Described diluent air pretreatment pipeline includes Air intake (1), Auto-drainage oil water separator (2), filter (3), oil mist separator (4), exsiccator (5), the first temperature Actuator (6), air flow straightener (43), flow control valve (7), pressure regulator valve (8), manostat (9), first-class gauge (10) and One stop valve (11);Described tail gas pretreatment pipeline includes gas inlet (12), heater (14), the second thermoregulator (15), second gauge (16), pretreatment tail gas flow straightener (44) and the second stop valve (13);Described mixed diluting measures pipeline Include mixed diluting device (45), the first check valve (17), constant temperature and humidity measuring chamber (46), the 3rd stop valve (18), the 3rd stream Gauge (19), the second check valve (20), the 4th stop valve (21) and vacuum pump (22).
A kind of gasoline automobile exhaust emissions detection system of particles the most according to claim 1, it is characterised in that described Air flow straightener (43) is internal arranges the first temperature survey table (23), the first moisture measurement table (24) and the first pressure measuring instrument (25)。
A kind of gasoline automobile exhaust emissions detection system of particles the most according to claim 1, it is characterised in that described Internal the second pressure measuring instrument (26), the second moisture measurement table (27) and the second temperature of arranging of pretreatment tail gas flow straightener (44) is surveyed Scale (28).
A kind of gasoline automobile exhaust emissions detection system of particles the most according to claim 1, it is characterised in that described Constant temperature and humidity measuring chamber (46) is internal arranges the 3rd pressure measuring instrument (29), the 3rd moisture measurement table (30), the 3rd temperature survey Table (31), particulate matter quality measurement of concetration table (32), particulate matter quantity measurement of concetration table (33) and car exhaust gas composition are surveyed Amount instrument (34).
A kind of gasoline automobile exhaust emissions detection system of particles the most according to claim 1, it is characterised in that described Second gauge (16) and internal the second pressure measuring instrument (26) the output feedback arranged of described pretreatment tail gas flow straightener (44) Signal, controls described flow control valve (7) and the described pressure regulator valve (8) of described diluent air pretreatment pipeline.
A kind of gasoline automobile exhaust emissions detection system of particles the most according to claim 1, it is characterised in that described Constant temperature and humidity measuring chamber (46) uses capsule-type.
A kind of gasoline automobile exhaust emissions detection system of particles the most according to claim 1, it is characterised in that detection After, described first stop valve (11), described second stop valve (13), described 3rd stop valve (18) dam, and the described 4th Stop valve (21) does not dams, and it is vacuum state that described tail gas pretreatment pipeline and described mixed diluting measure pipeline.
CN201620231853.0U 2016-03-24 2016-03-24 A kind of gasoline automobile exhaust emissions detection system of particles Expired - Fee Related CN205749206U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108008082A (en) * 2017-12-21 2018-05-08 中冶长天国际工程有限责任公司 A kind of saliferous gas or SRG gas detecting systems, parsing Tower System and saliferous gas or SRG gas detection methods
CN109458246A (en) * 2018-10-26 2019-03-12 南通大学 A kind of diesel particulate moisture absorption apparatus and the evaluation method of particulate matter moisture absorption
CN109932490A (en) * 2019-03-20 2019-06-25 西安航空学院 A kind of gas pretreatment device and gas-detecting device with back suction function
CN109932489A (en) * 2019-03-20 2019-06-25 西安航空学院 A kind of gas pretreatment device and gas-detecting device with mixed instrument
CN111458374A (en) * 2019-01-18 2020-07-28 上海沃尔沃汽车研发有限公司 System for monitoring water condensation in dilution tunnel and method for vehicle emission test
CN112051193A (en) * 2020-08-07 2020-12-08 广州亚美智造科技有限公司 Gas particulate matter concentration detection device, system and method
CN115387888A (en) * 2022-06-28 2022-11-25 山东交通学院 Automobile tail gas detector

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108008082B (en) * 2017-12-21 2023-11-10 中冶长天国际工程有限责任公司 Salt-containing gas or SRG gas detection system, analytic tower system and salt-containing gas or SRG gas detection method
CN108008082A (en) * 2017-12-21 2018-05-08 中冶长天国际工程有限责任公司 A kind of saliferous gas or SRG gas detecting systems, parsing Tower System and saliferous gas or SRG gas detection methods
CN109458246A (en) * 2018-10-26 2019-03-12 南通大学 A kind of diesel particulate moisture absorption apparatus and the evaluation method of particulate matter moisture absorption
CN109458246B (en) * 2018-10-26 2020-12-04 南通大学 Diesel engine particulate matter moisture absorption device and particulate matter moisture absorption evaluation method
CN111458374B (en) * 2019-01-18 2023-10-24 上海沃尔沃汽车研发有限公司 Dilution passage in-water condensation monitoring system and method for vehicle emission testing
CN111458374A (en) * 2019-01-18 2020-07-28 上海沃尔沃汽车研发有限公司 System for monitoring water condensation in dilution tunnel and method for vehicle emission test
CN109932489A (en) * 2019-03-20 2019-06-25 西安航空学院 A kind of gas pretreatment device and gas-detecting device with mixed instrument
CN109932490A (en) * 2019-03-20 2019-06-25 西安航空学院 A kind of gas pretreatment device and gas-detecting device with back suction function
CN109932490B (en) * 2019-03-20 2024-02-13 西安航空学院 Gas pretreatment device with back-pumping function and gas detection device
CN109932489B (en) * 2019-03-20 2024-02-13 西安航空学院 Gas pretreatment device with mixing instrument and gas detection device
CN112051193A (en) * 2020-08-07 2020-12-08 广州亚美智造科技有限公司 Gas particulate matter concentration detection device, system and method
CN112051193B (en) * 2020-08-07 2024-05-31 亚美智联数据科技有限公司 Gas particulate concentration detection device, system and method
CN115387888A (en) * 2022-06-28 2022-11-25 山东交通学院 Automobile tail gas detector
CN115387888B (en) * 2022-06-28 2023-09-15 山东交通学院 Automobile tail gas detector

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