CN105865858A - Sampling system for ash of exhausted gas of engine and application method of sampling system - Google Patents
Sampling system for ash of exhausted gas of engine and application method of sampling system Download PDFInfo
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- CN105865858A CN105865858A CN201610247540.9A CN201610247540A CN105865858A CN 105865858 A CN105865858 A CN 105865858A CN 201610247540 A CN201610247540 A CN 201610247540A CN 105865858 A CN105865858 A CN 105865858A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
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Abstract
The invention discloses a sampling system for ash of exhausted gas of an engine and an application method of the sampling system. The two ends of a main exhausting pipe are connected with the engine and a filter respectively; the main exhausting pipe is provided with a branched exhausting pipe; the branched exhausting pipe is provided with a first adjusting valve, a heating device, a second adjusting valve, a second sampling device and a vacuum pump in sequence; a flow meter is arranged on the branched exhausting pipe above the first adjusting valve; a first sampling device is arranged on the branched exhausting pipe between the heating device and the second sampling device; the first sampling device is arranged on a clamping device; the heating device is connected with a control unit. Heating temperature and lasting time of a heating system are set through the control unit, so that carbon smoke and soluble organic matters in particulate matters in exhausted gas are eliminated, and physical and chemical indexes including nano-scale appearance, element components and the like in the ash of the exhausted gas of the engine can be conveniently analyzed and researched.
Description
Technical field
The invention belongs to technical field of internal combustion engines, being specifically related to a kind of engine exhaust ash sampling is
System and using method thereof.
Background technology
Along with process of industrialization advances, auto industry is fast-developing, the recoverable amount of various motor vehicles
Being continuously increased, the life of the mankind is brought various facility by automobile without doubt, but its tail gas is arranged
Putting and but cause severe contamination to the atmospheric environment of human lives, haze weather the most in recent years is given
Human health causes significant damage.Granular material discharged for limiting vehicle, reduces it to environment
Pollution and the harm of human body, meet the strictest Abgasgesetz, in internal combustion engine product design
In exploitation, the research about " I. C. engine exhaust particulate matter " becomes focus.Arrange for internal combustion engine
The particle diameter distribution of aerated particle thing, fractal dimension and the property Quality Research such as sight pattern of receiving, generally use heat
Weight analysis, Raman analysis, the method for infrared spectrum analysis, these methods need to carry out particulate matter
Filter paper.
Summary of the invention
It is an object of the invention to overcome shortcoming of the prior art, it is provided that a kind of engine exhaust
Ash sampling system, the engine exhaust particulate matter after heater, eliminate carbon therein
Cigarette and dissolved organic matter, it is mainly composed of ash, it is simple to carry out ash quality and composition thereof
Analysis and research.
In order to solve above-mentioned technical problem, the present invention is achieved by the following technical solutions:
A kind of engine exhaust ash sampling system, by electromotor, main exhaust, cleaner, stream
Gauge, the first regulation valve, exhaustor, heater, the second regulation valve, the first sampling apparatus,
Clamper, the second sampling apparatus, vacuum pump and control unit composition, wherein:
Main exhaust arrival end is connected with the port of export of the exhaust pipe of engine, the main exhaust port of export with
Cleaner connects, and the main exhaust between transmitter and cleaner arranges an exhaustor；Propping up
The first regulation valve, heater, the second regulation valve, the second sampling apparatus is set gradually on exhaustor
And vacuum pump；
End at an exhaustor arranges vacuum pump, and the exhaustor above the first regulation valve sets
Put effusion meter, the exhaustor between heater and the second sampling apparatus arranges the first sampling
Device, the first sampling apparatus is arranged on clamper；Heater is connected with control unit.
In technique scheme, effusion meter is integrated type thermal gas flowmeter, props up for measuring
The integrated flow of exhaustor and instantaneous delivery, and compensate function with digital display and hyperthermic temperature.
In technique scheme, the second sampling apparatus is filter paper device, uses filter paper to carry out
Sampling, the receiving plane of filter paper will be perpendicular to gas flow direction, be configured.
In technique scheme, the first sampling apparatus is the micro-grid of copper mesh, is arranged on clamper,
And the receiving plane of the micro-grid of copper mesh is perpendicular to gas flow direction.
Use said system to carry out the ash sampling of engine exhaust, carry out as steps described below:
Step 1, starts electromotor, carries out heat engine under idling operation so that it is stable at target operating condition,
Simultaneously close off the first and second regulation valves；
Step 2, opens the first regulation valve, in judging an exhaustor according to the result of flowmeter survey
Instantaneous delivery, when instantaneous delivery reaches target flow, runs heater, and passes through control unit
Carry out computer heating control, so that gas temperature is stable at 500 ± 5 degrees Celsius；
Step 3, when gas temperature is stablized at 500 ± 5 degrees Celsius, opens the second regulation valve, fortune
Turn vacuum pump, utilize the first sampling apparatus and the second sampling apparatus that the gas in an exhaustor is carried out
Sampling.
In technique scheme, in step 1, target operating condition be maximum power point,
Maximum engine torque point.
In technique scheme, in step 2, target flow is 1 ± 10%L/s.
In technique scheme, in step 3, the sampling time of the first sampling apparatus is 1 5s,
The sampling time of the second sampling apparatus is 12 hours.
Compared with prior art, the invention has the beneficial effects as follows:
1. can realize the sampling of engine exhaust ash.Engine exhaust granule after heater
Thing, eliminates soot therein and dissolved organic matter, and it is mainly composed of ash, it is simple to ash
Sub-prime amount and composition thereof are analyzed research.
2. improve sample quality.Extraction flow and regulation sampling time can be controlled: effusion meter can be measured
Instantaneous delivery and integrated flow, by flow control valve, when making to measure, exhaust flow rate is constant every time.
3. simple in construction, easy to operate.It is an object of the invention to engine exhaust particulate matter is carried out
Sampling, does not has exhaustion dilution system and filtration, condensation, buffer gear etc., simple in construction, cost
Low.
Accompanying drawing explanation
Fig. 1 is the structural representation of inventive engine aerofluxus ash sampling system.
In figure: 1-electromotor；2-main exhaust；3-cleaner；4-effusion meter；5-first regulates valve；
6-props up exhaustor；7-heater；8-second regulates valve；9-the first sampling apparatus；10-clamper；
11-the second sampling apparatus；12-vacuum pump；13-control unit.
Fig. 2 is the transmission electron microscope photo that tail gas gathers sample.
Detailed description of the invention
With specific embodiment, the present invention is described in further detail below in conjunction with the accompanying drawings:
As it can be seen, one engine exhaust ash sampling system of the present invention, by electromotor, main row
Trachea, cleaner, effusion meter, the first regulation valve, an exhaustor, heater, the second regulation
Valve, the first sampling apparatus, clamper, the second sampling apparatus, vacuum pump and control unit composition,
Wherein:
Main exhaust arrival end is connected with the port of export of the exhaust pipe of engine, the main exhaust port of export with
Cleaner connects, and the main exhaust between transmitter and cleaner arranges an exhaustor；Propping up
The first regulation valve, heater, the second regulation valve, the second sampling apparatus is set gradually on exhaustor
And vacuum pump；
End at an exhaustor arranges vacuum pump, and the exhaustor above the first regulation valve sets
Put effusion meter, the exhaustor between heater and the second sampling apparatus arranges the first sampling
Device, the first sampling apparatus is arranged on clamper；Heater is connected with control unit.
In technique scheme, effusion meter is integrated type thermal gas flowmeter, props up for measuring
The integrated flow of exhaustor and instantaneous delivery, and compensate function with digital display and hyperthermic temperature.
In technique scheme, the second sampling apparatus is filter paper device, uses filter paper to carry out
Sampling, the receiving plane of filter paper will be perpendicular to gas flow direction, be configured.
In technique scheme, the first sampling apparatus is the micro-grid of copper mesh, is arranged on clamper,
And the receiving plane of the micro-grid of copper mesh is perpendicular to gas flow direction.
Use said system to carry out the ash sampling of engine exhaust, carry out as steps described below:
Step 1, starts electromotor, carries out heat engine under idling operation so that it is stable at target operating condition,
Simultaneously close off the first and second regulation valves；
Step 2, opens the first regulation valve, in judging an exhaustor according to the result of flowmeter survey
Instantaneous delivery, when instantaneous delivery reaches target flow, runs heater, and passes through control unit
Carry out computer heating control, so that gas temperature is stable at 500 ± 5 degrees Celsius；
Step 3, when gas temperature is stablized at 500 ± 5 degrees Celsius, opens the second regulation valve, fortune
Turn vacuum pump, utilize the first sampling apparatus and the second sampling apparatus that the gas in an exhaustor is carried out
Sampling.
In technique scheme, in step 2, target flow is 1 ± 10%L/s.
In technique scheme, in step 1, target operating condition be maximum power point,
Maximum engine torque point.
In technique scheme, in step 3, the sampling time of the first sampling apparatus is 1 5s,
The sampling time of the second sampling apparatus is 12 hours.
Using the micro-grid of copper mesh as the first sampling apparatus, Universal Number is T11012,200 mesh circular holes
Copper mesh, 100/box；Filter paper is as the second sampling apparatus, filter paper---quartz film, and Universal Number is
7202, PALLFLEX TISSUQUARTZ 47mm, material is quartz, a diameter of 47mm
Circular filter paper.
Engine start, heat engine 30min under idling operation, and at target operating condition maximum power point,
Steady running, the filtered device of aerofluxus enters in air.
The instantaneous delivery that an exhaustor according to flowmeter survey shows, regulation flow control valve is to mesh
Mark flow, generally 1L/s, target flow is steady state value.
Run heater, and carry out computer heating control by control unit, so that gas temperature is stable
At 500 ± 5 degrees Celsius.
Installing the micro-grid of copper mesh in clamper, placing clamp holder enters an exhaustor, carries out micro-grid and adopts
Sample.Micro-grid sample-duration 1-2s, after sampling terminates, takes out the micro-grid of copper mesh in clamper, puts into
In Storage Box, in case the detection of follow-up transmission electron microscope.
Operating vacuum pump, carries out filter paper, and the sampling time is according to engine emission performance, operating
Operating mode and environmental factors are set.In order to ensure sample size so that subsequent detection, generally need
Wanting 1-2 hour, under high torque, particulate matter mass discharge is big, and the sampling time can shorten, low moment of torsion
Time, granular material discharged quality is few, needs the longer sampling time.After sampling terminates, from bellows
Take out sampling filter paper, put into Storage Box.
Above the present invention is described in detail, but described content has been only the preferable enforcement of the present invention
Example, it is impossible to be considered the practical range for limiting the present invention.All made according to the present patent application scope
Impartial change and improvement etc., within all should still belonging to the patent covering scope of the present invention.
Claims (8)
1. an engine exhaust ash sampling system, it is characterised in that by electromotor, main exhaust
Pipe, cleaner, effusion meter, the first regulation valve, exhaustor, heater, the second regulation valve,
First sampling apparatus, clamper, the second sampling apparatus, vacuum pump and control unit composition, wherein:
Main exhaust arrival end is connected with the port of export of the exhaust pipe of engine, the main exhaust port of export with
Cleaner connects, and the main exhaust between transmitter and cleaner arranges an exhaustor；Propping up
The first regulation valve, heater, the second regulation valve, the second sampling apparatus is set gradually on exhaustor
And vacuum pump；
End at an exhaustor arranges vacuum pump, and the exhaustor above the first regulation valve sets
Put effusion meter, the exhaustor between heater and the second sampling apparatus arranges the first sampling
Device, the first sampling apparatus is arranged on clamper；Heater is connected with control unit.
A kind of engine exhaust ash sampling system the most according to claim 1, its feature exists
In, effusion meter is integrated type thermal gas flowmeter, for measure exhaustor integrated flow and
Instantaneous delivery, and compensate function with digital display and hyperthermic temperature.
A kind of engine exhaust ash sampling system the most according to claim 1, its feature exists
In, the second sampling apparatus is filter paper device, uses filter paper to sample, will the connecing of filter paper
Receipts face is perpendicular to gas flow direction, is configured.
A kind of engine exhaust ash sampling system the most according to claim 1, its feature exists
In, the first sampling apparatus is the micro-grid of copper mesh, is arranged on clamper, and the receiving plane of the micro-grid of copper mesh
It is perpendicular to gas flow direction.
5. the using method of an engine exhaust ash sampling system, it is characterised in that under according to
State step to carry out:
Step 1, starts electromotor, carries out heat engine under idling operation so that it is stable at target operating condition,
Simultaneously close off the first and second regulation valves；
Step 2, opens the first regulation valve, in judging an exhaustor according to the result of flowmeter survey
Instantaneous delivery, when instantaneous delivery reaches target flow, runs heater, and passes through control unit
Carry out computer heating control, so that gas temperature is stable at 500 ± 5 degrees Celsius；
Step 3, when gas temperature is stablized at 500 ± 5 degrees Celsius, opens the second regulation valve, fortune
Turn vacuum pump, utilize the first sampling apparatus and the second sampling apparatus that the gas in an exhaustor is carried out
Sampling.
The using method of a kind of engine exhaust ash sampling system the most according to claim 5,
It is characterized in that, in step 2, target flow is 1 ± 10%L/s.
The user of a kind of engine exhaust ash sampling system the most according to claim 5
Method, it is characterised in that in step 1, target operating condition is maximum power point, electromotor
Maximum torque point.
The user of a kind of engine exhaust ash sampling system the most according to claim 5
Method, it is characterised in that in step 3, the sampling time of the first sampling apparatus is 1 5s, second
The sampling time of sampling apparatus is 12 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610247540.9A CN105865858A (en) | 2016-04-20 | 2016-04-20 | Sampling system for ash of exhausted gas of engine and application method of sampling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610247540.9A CN105865858A (en) | 2016-04-20 | 2016-04-20 | Sampling system for ash of exhausted gas of engine and application method of sampling system |
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| Publication Number | Publication Date |
|---|---|
| CN105865858A true CN105865858A (en) | 2016-08-17 |
Family
ID=56632785
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610247540.9A Pending CN105865858A (en) | 2016-04-20 | 2016-04-20 | Sampling system for ash of exhausted gas of engine and application method of sampling system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596204A (en) * | 2017-01-22 | 2017-04-26 | 天津大学 | Particulate matter composite collecting system |
| CN109489984A (en) * | 2018-12-20 | 2019-03-19 | 西安交通大学 | A kind of engine exhaust gas particulate part diluted stream device and its application method |
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| CN103424286A (en) * | 2012-05-23 | 2013-12-04 | Avl北美股份有限公司 | Exhaust sampling system and method for water vapor management |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109489984A (en) * | 2018-12-20 | 2019-03-19 | 西安交通大学 | A kind of engine exhaust gas particulate part diluted stream device and its application method |
| CN109489984B (en) * | 2018-12-20 | 2024-08-16 | 西安交通大学 | Engine exhaust particle partial flow dilution device and application method thereof |
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Application publication date: 20160817 |