CN106198332A - A kind of exhaust gas from diesel vehicle discharged particle portable car-mounted test system - Google Patents
A kind of exhaust gas from diesel vehicle discharged particle portable car-mounted test system Download PDFInfo
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- CN106198332A CN106198332A CN201610536313.8A CN201610536313A CN106198332A CN 106198332 A CN106198332 A CN 106198332A CN 201610536313 A CN201610536313 A CN 201610536313A CN 106198332 A CN106198332 A CN 106198332A
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/0606—Investigating concentration of particle suspensions by collecting particles on a support
- G01N15/0618—Investigating concentration of particle suspensions by collecting particles on a support of the filter type
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/10—Testing internal-combustion engines by monitoring exhaust gases or combustion flame
- G01M15/102—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/10—Testing internal-combustion engines by monitoring exhaust gases or combustion flame
- G01M15/102—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases
- G01M15/108—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases using optical methods
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
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- G01N15/075—
Abstract
The invention belongs to moving source emission test technical field, be specifically related to a kind of exhaust gas from diesel vehicle discharged particle portable car-mounted test system.System consists of: multichannel can be incubated sampling tube 1 diesel vehicle gaseous contaminant measuring unit 2 fore filter 3 particulate matter based on filter membrane weight method measuring unit 4 scalable thinner ratio multi-channel sampling diluter 5 air filter 6 sickle and measure the storage of exhaust gas volumes flow module 12 data and real-time Transmission module 13 data collection and display terminal 14 data processing module 15 with the Sensor Integration Module 10 that filter membrane pallet 7 attemperator 8 particulate matter based on Principles of Laser on-line measurement unit 9 measures diesel vehicle engine parameters based on the BDS module 11 that the Big Dipper positions.This system PM to emission of diesel engine2.5、PM10, total particle measure in real time, and carry out multichannel Parallel Sampling, can accurately measure the particulate matter of emission of diesel engine under reality operating mode, the real time data of collection can be used for the granular material discharged of all kinds of diesel vehicle of quantitative evaluation.
Description
Technical field
The invention belongs to moving source emission test technical field, be specifically related to one and be applicable to measure exhaust gas from diesel vehicle discharge
Fine particle measurement apparatus.
Background technology
Fine particle is the major reason causing regional haze, and the diesel vehicle in moving source is due to fuel and ignition quality
Feature, the particle concentration of discharge is higher, the most powerful diesel vehicle, and its exhaust particulate substrate concentration is same power grade
Several times of gasoline car even tens times.There is now the limit about diesel vehicle particulate matter and arrange standard, following the most harsh by having
Exhaust gas from diesel vehicle discharge fine particle management and control means under reality operating mode will be more various, and management and control basis will be by limit row's standard
Exhaust emissions fine particle under reality operating mode is carried out discharge capacity statistics, and fine particle quantifies basic a set of accurately for support
The Portable vehicle-mounted formula of exhaust gas from diesel vehicle discharge fine particle under reality operating mode of measuring measures system, preferably serves diesel vehicle thin
Granular material discharged supervision.
The fine particle measuring method of exhaust emissions mainly have β attenuation sensors, trace oscillating balance method, gravimetric method and
Laser beam method.The measurement equipment being used for Portable vehicle-mounted formula needs volume little, easy for installation, it is easy to operation is with integrated.Above-mentioned 4
In the method for kind, β attenuation sensors, trace oscillating balance method cost are high, device is complicated and are not easy to installation carries.Simultaneously as
Exhaust emissions measurement under reality operating mode has sizable uncertainty, accordingly, it would be desirable to carry out Parallel Sampling to ensure measurement
Accuracy.The present invention have chosen two kinds of gravimetric methods being usually used in vehicle mounted portable exhaust emissions measurement system and the side of laser light scattering
Method, carries out the integrated of hardware and software, constructs a set of vehicle mounted tail gas row being applicable under reality operating mode and being easy to carry and install
Put measurement system.
The vehicle mounted portable fine particle of exhaust gas from diesel vehicle discharge at present is measured system and is primarily present following deficiency: 1. on market
The vehicle load measurement system of the exhaust gas from diesel vehicle discharge fine particle not being specifically designed under reality operating mode.The most existing bicycle-mounted portable
Formula exhaust emissions fine particle measures the fine particle limitednumber that system can be measured.3. filter membrane weight method is conveniently acquired
The component analysis of sample, but in existing particulate measurement system, the application of gravimetric method is extensive not, and gravimetric method is filled by the present invention
Divide and be applied in vehicle mounted portable measurement system.4. the present invention uses multi-channel sampling method first, utilizes gravimetric method to dissipate with laser
Method of penetrating is sampled simultaneously, and result can comparison, it is ensured that accuracy.
Summary of the invention
In order to solve the problem that above-mentioned prior art exists.Present invention aim at providing one bavin be applicable to moving source
The granular material discharged measurement system of oil tail gas discharge.Possess and measure exhaust gas from diesel vehicle discharge fine particle: PM simultaneously2.5、PM10、
The function of TSP, utilizes filter membrane weight method to sample with laser scattering method, and wherein filter membrane weight method uses multichannel to carry out the dilutest
Releasing ratio sampling, the sample gathered conveniently carries out adding up and component analysis.Whole filter membrane weight method measures the system body of particulate matter
Long-pending small and exquisite, install easy to operate.Laser scattering method can detect PM equally2.5、PM10, TSP, simultaneously by the real-time number of particle concentration
Upload according to relevant result of calculation, conveniently carry out data observation and subsequent analysis at the scene.
For reaching object above, the present invention by the following technical solutions:
A kind of exhaust gas from diesel vehicle discharged particle portable car-mounted test system, including be connected with the exhaustor of diesel vehicle
Multichannel can be incubated sampling tube (1), diesel vehicle gaseous contaminant measuring unit (2) that is connected with sampling tube (1) and based on filter membrane
The particulate matter measuring unit (4) of weight method, diesel vehicle gaseous contaminant measuring unit (2) being wherein connected with sampling tube (1) wraps
Containing fore filter (3).Particulate matter measuring unit based on filter membrane weight method comprises scalable thinner ratio multi-channel sampling
Diluter (5), air filter (6), the pure stainless steel sickle that particle size can be separated and filter membrane pallet (7),
Particulate matter measuring unit attemperator (8) based on filter membrane weight method, particulate matter on-line measurement unit based on Principles of Laser
(9), the Sensor Integration Module (10) of diesel vehicle engine parameters is measured, record diesel vehicle travel speed based on Big Dipper location
BDS module (11), exhaust volumetric flow measurement module (12) data store and real-time Transmission module (13), data collection and display
Terminal (14), data processing module (15), electric power system (16).Its structure is in accompanying drawing shown in Fig. 1, diesel vehicle gaseous contaminant
Position 1 in position 2, particulate matter measuring unit (4) figure based on filter membrane weight method in measuring unit (2) figure, based on Principles of Laser
Online particulate matter measuring unit (9) figure in position 3.Measure Sensor Integration Module (10) figure of diesel vehicle engine parameters simultaneously
Middle position 4, in BDS module (11) figure of record diesel vehicle travel speed based on Big Dipper location, diesel vehicle is sent out by position 5 respectively
Motivation parameter and travel speed carry out data record, position 6 in exhaust volumetric flow measurement module (12) figure, all above scene
Measurement data stores in data and stores in real time and transmit in position 7 in real-time Transmission module (13) figure.
This system can measure the mass concentration of gaseous contaminant of exhaust gas from diesel vehicle discharge, oil consumption, speed, engine speed
Etc. multiple parameters.Real-time stabilization the ground mass discharge rate of real-time pollutant in output mobile source, depletion rate, exhaust emissions matter
Amount and volumetric rate, can obtain granular material discharged mass concentration and the emission factor of many measuring methods.
Described sampling tube (1) includes the sampling of sampling tube and the multichannel all steel material that can gather gaseous contaminant
Pipe, the multi-channel sampling pipe of all steel material has single channel, the dual pathways, 3 passages available, the sampling flow one of each passage
Causing, scope is in 0-5L/min scalable.
Described be suitable to measure gaseous contaminant unit (2) in exhaust gas from diesel vehicle and include fore filter, O can be measured2、NOx、
NO、CO、CO2, HC integrated transducer platform.And its fore filter (3) may filter that the particulate matter in diluent air, reduce into
Enter the particle concentration in unified platform tail gas, prevent platform from damaging.
Described particulate matter measuring unit (4) structure based on filter membrane weight method is as shown in Fig. 2 in accompanying drawing, and tail gas is by Fig. 25
Shown in position provided power of bleeding to enter adjustable to determine thinner ratio multi-channel sampling diluter (5) by pump and be numbered 1 as in figure
Position.Meanwhile, in air filter (6) is by figure, position shown in 2 and tail gas simultaneously enter diluter.Dilution chamber is mixed
Three tunnels are divided to sequentially enter the pure stainless steel sickle and filter membrane torr that can be separated by particle size with constant flow velocity after conjunction
Position shown in 3,4 in dish (7) i.e. figure.Wherein measure PM2.5With PM10Need sickle, when measuring TSP, then need not sickle.Warp
Spending the regular hour, particulate matter falls on the filter membrane in filter membrane pallet.This is adjustable determines the dilution of thinner ratio multi-channel sampling
Device (5) thinner ratio scope can be between 10 ~ 60, and the filter membrane used is 47mm specification, and volume is little, and material is Teflon or stone
English, is convenient to follow-up particulate matter component analysis.Meanwhile, each unit has attemperator (8) in sampling process, it is to avoid condensation
The particle loss caused.
Described particulate matter on-line measurement unit (9) based on Principles of Laser can simultaneously or selective measurement PM2.5、PM10、
TSP.Can export mass concentration and the population of particulate matter in real time, measured data can be implemented storage or collect online.
The engine-operated rotating speed collected by Sensor Integration Module (10) of described measurement diesel vehicle engine parameters, air inlet discrimination
Pipe pressure and temperature, exhaust emissions temperature, ambient temperature and pressure, surveyed data can reflect diesel vehicle engine operating shape in real time
State, and for the calculating of oil consumption.
The BDS module (11) of described record diesel vehicle travel speed based on Big Dipper location, utilizes the BDS skill of domestic-developed
Diesel vehicle driving process is accurately positioned by art, the travel speed of real time record diesel vehicle.
Described exhaust volumetric flow measurement module (12), selects the effusion meter being suitable for measuring exhaust gas from diesel vehicle discharge to bavin
Oil tail gas discharge volume flow carries out accurate recording.
Described data store above-mentioned all ECUs and module with real-time Transmission module (13): diesel vehicle gaseous contamination
Thing measuring unit (2) and particulate matter measuring unit (4) based on filter membrane weight method, particulate matter based on filter membrane weight method is measured single
Unit's attemperator (8), particulate matters on-line measurement unit (9) based on Principles of Laser, measure the sensor of diesel vehicle engine parameters
Integration module (10), all original number gathered in the BDS module (11) of record diesel vehicle travel speed based on Big Dipper location
According to carrying out real-time backup, it is provided that memory card carries out data backup with USB exit for user.Simultaneously by online data or from
Line transmission is to data collection and display terminal (14).
Described data collection is connected with data processing module (15) with display terminal (14), and data process mould to original number
After carrying out synchronization, quality control, calculate the diesel oil tailstock according to mass conservation law, combustion process, equation for ideal gases
The second level mass rate of gas discharge, second level depletion rate, second level gaseous contaminant rate of discharge, second grade particles thing rate of discharge,
Draw accurate fine particle emission status and the emission factor of diesel vehicle particulate matter, simultaneously can be right with display terminal (14) according to collection
All modules carry out on-off control.
Compared to the prior art the present invention, has the advantage that
Have employed filter membrane weight method and carry out exhaust gas from diesel vehicle discharged particle measurement under reality operating mode, facilitate exhaust gas from diesel vehicle row
Put the subsequent component analysis of particulate matter.
Realize particulate matter under two kinds of real operating modes and measure the exhaust gas from diesel vehicle discharged particle survey of typical method comparison simultaneously
The foundation of amount system.
The particulate count gathered, according to being exhaust gas from diesel vehicle discharged particle representative data under reality operating mode, has certain
Supervision reference value.
This systematic survey and method for computing data determine system and eliminate quite a few compared to other measurement systems
Hardware, reduces cost, reduces volume, is convenient for carrying and installs.
Accompanying drawing explanation
Accompanying drawing 1 is exhaust gas from diesel vehicle of the present invention discharge fine particle vehicle load measurement system structure schematic diagram:
Wherein 1 is diesel vehicle gaseous contaminant measuring unit (2);2 is particulate matter measuring unit (4) based on filter membrane weight method;3
For particulate matters on-line measurement unit (9) based on Principles of Laser；4 is the sensor integration mould simultaneously measuring diesel vehicle engine parameters
Block (10)；5 is the BDS module (11) of record diesel vehicle travel speed based on Big Dipper location；6 is the sensor die of volume flow
Block (12)；7 store and real-time Transmission module (13) for data.
Accompanying drawing 2 is for tying based on filter membrane weight method unit in exhaust gas from diesel vehicle of the present invention discharge fine particle vehicle load measurement system
Structure schematic diagram:
Wherein 1 is adjustable to determine thinner ratio multi-channel sampling diluter (5);2 is air filter (6);3 is sickle；4 are
Filter membrane pallet；5 is air pump.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As shown in drawings, the present embodiment one exhaust gas from diesel vehicle discharge fine particle vehicle load measurement system, including with diesel oil
The multichannel that the offgas duct of car is connected can be incubated sampling tube 1, the diesel vehicle gaseous contaminant measuring unit being connected with sampling tube 1
2 and particulate matter measuring unit 4 based on filter membrane weight method, wherein gaseous contaminant measuring unit 2 includes fore filter 3.
Particulate matter measuring unit 4 based on filter membrane weight method comprises and adjustable determines thinner ratio multi-channel sampling diluter 5, air mistake
Filter 6, the pure stainless steel sickle that particle size can be separated and filter membrane pallet 7, granule based on filter membrane weight method
Thing measuring unit attemperator 8, particulate matter on-line measurement unit 9 based on Principles of Laser, measure the biography of diesel vehicle engine parameters
Sensor integration module 10, BDS module 11 exhaust volumetric flow of record diesel vehicle travel speed based on Big Dipper location measures mould
Block 12, data store and real-time Transmission module 13, data collection and display terminal 14, data processing module 15, electric power system 16.
Below the present embodiment one exhaust gas from diesel vehicle being discharged fine particle vehicle load measurement system, each several part describes in detail such as
Under:
The multichannel being connected with the offgas duct of diesel vehicle can be incubated sampling tube 1: sampling tube includes applicable exhaust gas from diesel vehicle row
The pvc pipe of the gaseous contaminant sampling put and the pure rustless steel sampling tube of fine particle sampling, owing to there being two measurements in system
The unit of fine particle, therefore particulate matter is dual pathways sampling tube, and sampling tube is provided as the heat tracing pipe of its insulation simultaneously.
Diesel vehicle gaseous contaminant measuring unit 2: include O2、NO2, NO electrochemical sensor and CO, CO2, HC measure flat
Platform, can measure the percent concentration of exhaust gas from diesel vehicle discharge above-mentioned gas, and sample frequency can be arranged voluntarily, can arrange scope
Between 1-10Hz.
Particulate matter measuring unit 4 based on filter membrane weight method: use filter membrane weight method to carry out the measurement of fine particle, by can
Regulate determines thinner ratio multi-channel sampling diluter 5, air filter 6, the pure stainless steel that can be separated by particle size
Sickle and filter membrane pallet 7, particulate matter measuring unit attemperator 8 based on filter membrane weight method is constituted, and wherein enters scalable
The diluent air of the multi-channel sampling diluter 5 of thinner ratio is carried out adsorptivity purification by air filter 6, filters in diluent air
Particulate matter, it is ensured that enter diluter air purity.Simultaneously according to hydromechanical principle in pipeline in diluter
Pipeline carries out the bore of structure and dilution chamber and is designed, it is ensured that tail gas is sufficiently mixed in dilution chamber with pure air, simultaneously
Ensure that the mixed gas flow entering sickle keeps constant according to the specification of sickle, it is considered to system is easy to carry little with volume,
Using the sickle of 5L/min or 10L/min, for reducing the condensation loss that particulate matter is likely to occur, whole unit is equipped with safety
Low-power attemperator,
Particulate matters on-line measurement unit (9) based on Principles of Laser: by laser light scattering principle record PM2.5、PM10, TSP mass dense
Degree and population, inside carries sickle, and sampling flow may be configured as 1-10L/min, and sample frequency is up to 10Hz, and its data can
Realize storing in real time and on-line normalization.
Measure the Sensor Integration Module 10 of diesel vehicle engine parameters: this module includes measuring diesel vehicle rotating speed, air inlet discrimination
Pipe pressure and temperature, temperature and pressure, exhaust emissions temperature and pressure, ambient temperature and pressure totally 9 tunnel of entrance air filter gas
Sensor and OBD integration module, No. 9 sensors are high-precision sensor, are connected with AD D/A converter module, export diesel vehicle
Engine-operated all parameters.
The BDS module 11 of record diesel vehicle travel speed based on Big Dipper location: use domestic big-dipper satellite to diesel vehicle
Longitude and latitude, elevation position accurately, and the exhaust emissions feature for research diesel vehicle provides reference data accurately.
Exhaust volumetric flow measurement module 12: consider the physical property of exhaust gas from diesel vehicle, basis for selecting Karman vortex street
Exhaust gas from diesel vehicle discharge volume flow is measured by the effusion meter that principle produces.
Data store with real-time Transmission module 13: all measuring units possessing data output characteristics are all connected with this module
Connecing, all data are carried out real-time storage and transmission, memory function is the initial data backup functionality realizing module, according to
The demand at family carries out exit setting.Wherein transmission means is divided into wired and wireless, selects for user, no matter which kind of data
Transmission means, all can carry out online DATA REASONING to diesel vehicle.
Data collection and display terminal 14: receive and store, from data, all data sent with real-time Transmission module 13,
Can the real-time gaseous contaminant of graphic software platform diesel vehicle with measure the discharge situation of change of fine particle from Principles of Laser, and
Emissions profile is stored in terminal.Meanwhile, this terminal can be sent out when measuring instrument occurs abnormal according to existing measurement data
Go out alarm and reminding.This terminal is mainly two kinds of forms: the upper computer software of increasing income is with the highly integrated digital display researched and developed voluntarily eventually
End.
Data processing module 15: all collection in worksite data carry out synchronization, invalid data is rejected, discrete date is filled out
Benefit, the calculating of data, this modules nests is in data collection with display terminal 14, and another form is that increasing income of cooperation is upper
The code form that machine software is designed.
Electric power system 16: provide galvanic current source, predominantly chargeable storage quiet with super for whole measurement system
Sound small generator, if desired outfit device are powered by vehicle accumulator.
The present invention tests the operation principle of system: when, after diesel vehicle engine, the tail gas of discharge is by diesel vehicle
The multichannel that offgas duct is connected can be incubated sampling tube 1, enters diesel vehicle gaseous contaminant measuring unit via fore filter 3
2, simultaneously enter particulate matter measuring unit 4 based on filter membrane weight method, particulate matter on-line measurement unit 9 based on Principles of Laser,
The sampling pump of three unit is at once opened and is sampled.Measure the Sensor Integration Module 10 of diesel vehicle engine parameters, base simultaneously
BDS module 11 exhaust volumetric flow measurement module 12 in the record diesel vehicle travel speed of Big Dipper location is opened and is carried out data receipts
Collection.Test all of data can data store with real-time Transmission module 13 in preserve in real time and transmit to data collection with
Display terminal 14.Data processing module 15 carries out pre-treatment, quality control to all collection data simultaneously, and by gaseous contaminant
After being combined with engine parameters, the principle of mass conservation, equation for ideal gases and combustion process is used can accurately to calculate moving source
Tail gas second level mass discharge and depletion rate, measure the fuel consumption by the second, calculate the discharge based on mileage of diesel vehicle car
The factor or emission factor based on oil consumption, the exhaust gas from diesel vehicle discharge capacity of accumulated time.These results are with data or the shape of figure
Formula is shown on display terminal 14 at data collection, after inputting filter membrane collection result based on filter membrane weight method, laser with
The measurement result of filter membrane weight method can carry out the comparison of particle emission factor and rate of discharge by data processing module 15, and
Finally on data collection with display terminal 14, show comparison result.
Claims (14)
1. an exhaust gas from diesel vehicle discharged particle portable car-mounted test system, it is characterised in that: include the row with diesel vehicle
The multichannel that trachea is connected can be incubated sampling tube (1), the diesel vehicle gaseous contaminant measuring unit being connected with sampling tube (1)
And particulate matter measuring unit (4) based on filter membrane weight method, the diesel vehicle gaseous contaminant being wherein connected with sampling tube (1) (2)
Measuring unit (2) includes fore filter (3).
2. particulate matter measuring unit based on filter membrane weight method comprises scalable thinner ratio multi-channel sampling diluter (5), empty
Air filter (6), the pure stainless steel sickle that particle size can be separated and filter membrane pallet (7), weigh based on filter membrane
Particulate matter measuring unit attemperator (8) of method, particulate matters on-line measurement unit (9) based on Principles of Laser, measure diesel vehicle
The Sensor Integration Module (10) of engine parameters, the BDS module (11) of record diesel vehicle travel speed based on Big Dipper location, survey
Sensor assembly (12) data of amount exhaust volumetric flow store and real-time Transmission module (13), data collection and display terminal
(14), data processing module (15), electric power system (16).
Exhaust gas from diesel vehicle discharged particle the most according to claim 1 portable car-mounted test system, it is characterised in that: with
The multichannel that the offgas duct of diesel vehicle is connected can be incubated the pure rustless steel sampling that sampling tube (1) is the differently configured caliber of multichannel
Pipe, particulate matter is difficult to attachment, loses little, and the sustainable insulation of sampling tube, and temperature scalable.
Exhaust gas from diesel vehicle discharged particle the most according to claim 1 portable car-mounted test system, it is characterised in that:
Described diesel vehicle gaseous contaminant measuring unit (2) can measure O2、NO2、NO、 CO、CO2, the percent concentration of HC, due to diesel oil
The particle concentration of tail gas discharge is higher, and this cell location has fore filter (3), to enter in measuring unit tail gas
Grain thing filters, and has zeroing and calibration function simultaneously.
Exhaust gas from diesel vehicle discharged particle the most according to claim 1 portable car-mounted test system, it is characterised in that: base
Scalable thinner ratio multi-channel sampling diluter (5), its thinner ratio is comprised in the particulate matter measuring unit (4) of filter membrane weight method
Can carry out arbitrary disposition between 10 ~ 60, during sampling, thinner ratio is invariable.
Exhaust gas from diesel vehicle discharged particle the most according to claim 1 portable car-mounted test system, it is characterised in that: enter
Enter the air of scalable thinner ratio multi-channel sampling diluter (5) to be processed by air filter (6), after dilution containing
The exhaust flow of grain thing keeps dividing consistently three road air-flows to enter can be separated by particle size pure according to the specification of sickle
Stainless steel sickle and filter membrane pallet (7), it is ensured that multichannel enters the tail gas of sickle can be completely separated into PM2.5、
PM10, simultaneously can measure TSP, filter membrane used is 47mm specification, and filter membrane material is Teflon or quartz.
Exhaust gas from diesel vehicle discharged particle the most according to claim 1 portable car-mounted test system, it is characterised in that: base
Particulate matter measuring unit (4) in filter membrane weight method has attemperator (8), can persistently be incubated whole unit, power
Low, preheating time is short.
Exhaust gas from diesel vehicle discharged particle the most according to claim 1 portable car-mounted test system, it is characterised in that: base
Online particulate matter measuring unit (9) in Principles of Laser can measure PM2.5、PM10, TSP grain number dense with second level frequencies above quality
Degree, and export real-time measuring data.
Exhaust gas from diesel vehicle discharged particle the most according to claim 1 portable car-mounted test system, it is characterised in that: base
Adopt in the particulate matter measuring unit (3) of filter membrane weight method and the fine particle of particulate matter measuring unit (9) based on Principles of Laser
Sample data are available for the later stage and compare, the particulate matter sample that wherein particulate matter measuring unit (3) based on filter membrane weight method is gathered
Product are available for the later stage and carry out organic or inorganic component analysis.
Exhaust gas from diesel vehicle discharged particle the most according to claim 1 portable car-mounted test system, it is characterised in that:
The Sensor Integration Module (10) measuring diesel vehicle engine parameters includes measuring the photoelectric sensor of diesel vehicle engine speed, measurement
Air-distributor pressure and the sensor of temperature, the temperature sensor of measurement exhaust gas from diesel vehicle discharge, measure ambient temperature and pressure
Sensor, all the sensors output voltage or current signal carry out data conversion through AD digital-to-analogue, can export and store in real time
With transmission data.
11. exhaust gas from diesel vehicle discharged particle according to claim 1 portable car-mounted test systems, it is characterised in that:
The BDS module (11) of record diesel vehicle travel speed based on Big Dipper location chooses the module note that China's big-dipper satellite carries out positioning
The travel speed that record diesel vehicle is real-time.
12. exhaust gas from diesel vehicle discharged particle according to claim 1 portable car-mounted test systems, it is characterised in that:
The sensor assembly (12) measuring exhaust volumetric flow includes measuring the effusion meter of inlet manifold air mass flow, according to the need of user
Configuring the effusion meter that can measure exhaust flow, surveyed data can be transmitted and store and real-time Transmission module (13) to data.
13. exhaust gas from diesel vehicle discharged particle according to claim 1 portable car-mounted test systems, it is characterised in that:
Data store and are connected with all measuring units with real-time Transmission module (12), the data that all measuring units gather are stored up in real time
Depositing and transmit to data collection end (13), data collection end (13) is built-in with data processing module (14), the data of collection is entered
Row preliminary treatment, quality control, calculating, output frequency be the particulate matter of 1 ~ 5Hz, NOx, the mass rate of diesel vehicle oil consumption and
NOx and the emission factor of diesel vehicle fine particle.
14. exhaust gas from diesel vehicle discharged particle according to claim 1 portable car-mounted test systems, it is characterised in that:
Electric power system (15) is D.C. regulated power supply, carries out being configured to whole measurement system power supply according to the demand of user.
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Application publication date: 20161207 |