CN105784922A - Small-size closed chamber for measuring evaporative emission of fuel of motorcycle - Google Patents
Small-size closed chamber for measuring evaporative emission of fuel of motorcycle Download PDFInfo
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- CN105784922A CN105784922A CN201410799701.6A CN201410799701A CN105784922A CN 105784922 A CN105784922 A CN 105784922A CN 201410799701 A CN201410799701 A CN 201410799701A CN 105784922 A CN105784922 A CN 105784922A
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Abstract
The invention discloses a small-size closed chamber for measuring evaporative emission of fuel of a motorcycle.The small-size closed chamber comprises a closed chamber box body, gas collection bags, a temperature control device, a hydrogen flame ionization type hydrocarbon analyzer, a pressure adjusting device, a circulation air duct, a fuel tank heating system, a rack and a control platform; a suspended ceiling is arranged at the ceiling of the closed chamber box body, and the gas collection bags are placed on the suspended ceiling; the closed chamber box body is a cubic box body, the circulation air duct and the temperature control device are fixed to the back side of the closed chamber box body, and circulating fans are mounted in the circulation air duct.The closed chamber is good in air-tightness, accurate in measured data and good in test reproducibility.Meanwhile, the closed chamber fully takes particularity of a measured object and price acceptable to domestic enterprises into consideration, on the premise that relevant test laws and regulations are met, independent design and development are conducted, equipment cost is greatly lowered, the engineering purpose of miniaturizing a fuel evaporation closed chamber is achieved, and the closed chamber can meet requirements of national standards.
Description
Technical field
The present invention relates to a kind of confined chamber, especially a kind of small-sized confined chamber for motorcycle fuel evaporation emissions measurement.
Background technology
The emission source of automobile pollution environment mainly has three: exhaust emissions, crankcase gas blowby and EVAP, wherein exhaust emissions, crankcase gas blowby have caused the concern of Motorcycle Manufacturers and have taken corresponding control measure, but motorcycle fuel evaporation discharges but without arousing enough attention.At present, worldwide only having a few countries and area to implement Motorcycle Fuel Evaporation Regulations, China in 2007 has also issued and implemented " motorcycle and trail bike fuel evaporation pollutant emission limit and measuring method " standard.
The EVAP discharge of motor vehicles is one of source of HC pollutant in air.Research EVAP rule and influence factor thereof, the size that deeply EVAP is affected by understanding EVAP mechanism and each influence factor, it is possible to effectively EVAP is controlled, thus reducing the discharge capacity of vehicle fuel evaporation.
At present, general in the world motorcycle fuel evaporation emissions measurement method mainly has collecting method and confined chamber method.Collecting method is that the catcher that each for tested vehicle EVAP emission source and inside are filled activated carbon connects, and utilizes the HC of evaporation during charcoal test the mass change of catcher before and after experiment with measuring, is the HC mass of motorcycle emission during test.The method equipment is relatively easy, and acquisition expenses is low, but test inaccuracy, deviation are big, repeatability and concordance difference etc..And confined chamber method is to be placed on by tested vehicle in a good confined chamber of air-tightness, carry out associative operation according to standard, detect HC concentration in confined chamber with HC analyser, calculate the HC mass discharged during test.The air-tightness requirement to equipment of this method, the impermeable Hydrocarbon of inner surface of confined chamber, also hydrocarbon release does not react.The test data of the method are accurate, test favorable reproducibility, and equipment relative complex, acquisition expenses is high, is the method for testing of current main flow.
Summary of the invention
In order to overcome the problems referred to above, the present invention provides a kind of and adopts confined chamber laboratory method form, measures the small-sized confined chamber of one of Motorcycle Fuel Evaporative Emission principle condition in small-sized confined space.
The present invention be the technical scheme is that for achieving the above object
A kind of small-sized confined chamber for motorcycle fuel evaporation emissions measurement, including confined chamber casing, Storage Time in Gas Collecting Bag, temperature control equipment, hydrogen flameionization type carbon-hydrogen analyzer, pressure-regulating device, circulation air path, fuel tank heating system, frame, parametric controller；
Described confined chamber casing top is provided with furred ceiling, and described furred ceiling is placed 4 Storage Time in Gas Collecting Bags；
Described confined chamber casing is rectangular box, and described circulation air path and temperature-adjusting device are fixed on closed casing rear portion, is provided with 2 circulating fans in described circulation air path, and described circulating fan is arranged below pressure transducer；
Being provided with control box a on the left of described confined chamber box house centre position, right side is provided with control box b, described control box a built with temperature sensor, and described control box b is built with temperature sensor, fuel tank heating plug and stand-by power supply；
Described confined chamber casing crown center position is equipped with FID analyser sampling probe；
Described confined chamber casing left upper portion leaves hydrocarbon air inlet/outlet, and described hydrocarbon air inlet/outlet is provided with circular air channel, and described circular air channel connects the aerator being disposed in the outdoor；
Described frame is arranged on outside confined chamber casing, is provided with air compressor, vacuum pump and compressor of air conditioner in described frame；
Described parametric controller is arranged on outside confined chamber casing, and described parametric controller is provided with computer, temperature and pressure instrument and electric control unit.
Further, described circulation air path is divided into epimere, stage casing and hypomere, described stage casing and the hypomere left and right sides to be respectively arranged with a fan leaf type air inlet, is provided with dividing plate between described stage casing and epimere, equipped with two exhaust fans on described dividing plate.
Further, described temperature-adjusting device is arranged in circulation air path epimere, and described temperature-adjusting device includes heater and air outlet, and anemobiagraph and temperature sensor are installed by described air outlet place, in real time monitoring wind speed and pathogenic wind-warm.
Further, described confined chamber casing top nose is equipped with pressure transducer；Described confined chamber casing top rear is provided with camera probe.
Further, described circular air channel, built with support, described support is fixed with cylinder, and described cylinder lower end is fixed with air channel pallet, and described air channel tray edge is provided with rectangular groove, has silica gel sealing bar in described groove.During experiment, cylinder pulls up air channel pallet, is sealed by confined chamber air vent by sealing strip, by internal for confined chamber and external environment；Testing complete, cylinder promotes air channel push-plate to move down, and hydrocarbon air inlet/outlet is opened, and aerator starts, and the gas in confined chamber is discharged to outdoor.
Further, described confined chamber casing top sets the upper right corner and has square opening, and described square opening is fixed rustless steel air plug plate a and air plug plate b, described air plug plate a has 3 aviation plug circular holes and 2 tetrafluoro tracheas are imported and exported.
Further, described confined chamber casing front end is provided with confined chamber door, fixed optical axis in the middle of described confined chamber door, and described optical axis connects the cylinder b being located at outside confined chamber casing.
Further, circular visual window is had above described confined chamber door.
Further, it is provided with extension type antistatic alarm on the left of described confined chamber box bottom.
Further, described confined chamber casing is supported by steelframe, and described confined chamber casing and steelframe stainless steel welded form by 316.
The beneficial effect of the invention:The air-tightness of this confined chamber is good, and test data are accurate, test favorable reproducibility.Simultaneously, this device has taken into full account the acceptable price of particularity and domestic enterprise of measurand, independent design exploitation under the premise meeting dependence test laws and regulations requirement, greatly reduce equipment cost, achieve the engineering problem of EVAP confined chamber miniaturization, and make the requirement that this equipment is up to state standards.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
Fig. 2 is transverse cross-sectional view of the present invention；
Fig. 3 is longitudinal sectional drawing of the present invention；
Fig. 4 is that temperature of the present invention regulates, air quantity circulates schematic diagram；
Fig. 5 is confined chamber door schematic diagram of the present invention, and a is front view, and b is right view, and c is axonometric chart；
Fig. 6 a is air plug plate a structural representation of the present invention, and b is air plug plate b structural representation, and c is the longitudinal sectional drawing of a, and d is the longitudinal sectional drawing of c；
In figure, 1, confined chamber casing；2, Storage Time in Gas Collecting Bag；3, circulation air path；4, frame；5, parametric controller；6, box a is controlled；7, box b is controlled；8, FID analyser sampling probe；9, hydrocarbon air inlet/outlet；10, circular air channel；11, air compressor；12, vacuum pump；13, compressor of air conditioner 14, fan leaf type air inlet；15, exhaust fan；16, pressure transducer；17, air plug plate a；18, air plug plate b；19, aviation plug circular hole；20, tetrafluoro trachea is imported and exported；21, confined chamber door；22, optical axis；23, cylinder b；24, circular visual window.
Detailed description of the invention
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3 shows,
A kind of small-sized confined chamber for motorcycle fuel evaporation emissions measurement, including confined chamber casing 1, Storage Time in Gas Collecting Bag 2, temperature control equipment, hydrogen flameionization type carbon-hydrogen analyzer, pressure-regulating device, circulation air path 3, fuel tank heating system, frame 4, parametric controller 5；
Confined chamber casing 1 top is provided with furred ceiling, and furred ceiling is placed four Storage Time in Gas Collecting Bags 2；
Confined chamber casing 1 is rectangular box, and circulation air path 3 and temperature-adjusting device are fixed on closed casing rear portion, is provided with two circulating fans in circulation air path 3, and circulating fan is arranged below pressure transducer；
Being provided with control box a6 on the left of confined chamber casing 1 bosom position, right side is provided with control box b7, controls box a6 built with temperature sensor, controls box b7 built with temperature sensor, fuel tank heating plug and stand-by power supply；
Confined chamber casing 1 crown center position is equipped with FID analyser sampling probe 8；
Confined chamber casing 1 left upper portion leaves hydrocarbon air inlet/outlet 9, and hydrocarbon air inlet/outlet 9 is provided with circular air channel 10, and circular air channel 10 connects the aerator being disposed in the outdoor；
It is outside that frame 4 is arranged on confined chamber casing 1, is provided with air compressor 11, vacuum pump 12 and compressor of air conditioner 13 in frame 4；
It is outside that parametric controller 5 is arranged on confined chamber casing 1, and parametric controller 5 is provided with computer, temperature and pressure instrument and electric control unit.
Circulation air path 3 is divided into epimere, stage casing and hypomere, stage casing and the hypomere left and right sides to be respectively arranged with a fan leaf type air inlet 14, is provided with dividing plate between stage casing and epimere, equipped with two exhaust fans 15 on dividing plate.
Temperature-adjusting device is arranged in circulation air path 3 epimere, and temperature-adjusting device includes heater and air outlet, and anemobiagraph and temperature sensor are installed by air outlet place, in real time monitoring wind speed and pathogenic wind-warm.
Confined chamber casing 1 top nose is equipped with pressure transducer 16；Confined chamber casing 1 top rear is provided with camera probe.
Circular air channel 10, built with support, support is fixed with cylinder, and cylinder lower end is fixed with air channel pallet, and air channel tray edge is provided with rectangular groove, has silica gel sealing bar in groove.During experiment, cylinder pulls up air channel pallet, is sealed by confined chamber air vent by sealing strip, by internal for confined chamber and external environment；Testing complete, cylinder promotes air channel push-plate to move down, and hydrocarbon air inlet/outlet is opened, and aerator starts, and the gas in confined chamber is discharged to outdoor.
Confined chamber casing 1 top sets the upper right corner and has square opening, and square opening is fixed rustless steel air plug plate a17 and air plug plate b18, air plug plate a17 has three aviation plug circular holes 19 and two tetrafluoro tracheas import and export 20.
Confined chamber casing 1 front end is provided with confined chamber door 21, the middle fixed optical axis 22 of confined chamber door 21, and optical axis 22 connects the cylinder b23 being located at outside confined chamber casing 1.
Circular visual window 24 is had above confined chamber door 21.
Confined chamber casing 1 bottom left is provided with extension type antistatic alarm.
Confined chamber casing 1 is supported by steelframe, and confined chamber casing 1 and steelframe stainless steel welded form by 316.
As it can be seen, in specific implementation process, first the temperature in confined chamber controlled at 25 DEG C ± 5 DEG C, experiment starts front opening aerator and exhaust fan, cleans confined chamber a few minutes, until HC concentration reaches stable environmental background value.Then carbon-hydrogen analyzer is demarcated.Temperature sensor, in examination vehicle propulsion confined chamber, is connected with thermograph and temperature controller, installs heating plate by processed good treating.Start-up temperature monitor, begins to warm up fuel tank.When fuel oil temperature reaches 13.5 DEG C, cover fuel tank cap immediately.Closing aerator, and close sealing Mi Men and exhaust outlet, room door sealing circle is inflated.When fuel oil temperature reaches 15.5 DEG C ± 0.5 DEG C, the concentration of the Hydrocarbon in analysis confined chamber immediately, and record concentration this moment, temperature and pressure.
Before off-test, HC analyser carries out zero point immediately and span point is demarcated.When experiment terminates, (t=60min) analyzes the Hydrocarbon in confined chamber immediately and records, and measures temperature Tf and pressure Pa f simultaneously.Finally, stopping heating, room door sealing circle is exitted, and opens confined chamber door and exhaust outlet, aerator and exhaust fan and starts to clean confined chamber.
Above; it is only the present invention preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; any those familiar with the art is in the technical scope of present disclosure; it is equal to replacement according to technical scheme and inventive concept thereof or is changed, all should be encompassed within protection scope of the present invention.
Claims (9)
1. the small-sized confined chamber for motorcycle fuel evaporation emissions measurement, it is characterised in that: include confined chamber casing, Storage Time in Gas Collecting Bag, temperature control equipment, hydrogen flameionization type carbon-hydrogen analyzer, pressure-regulating device, circulation air path, fuel tank heating system, frame, parametric controller；Described confined chamber casing top is provided with furred ceiling, and described furred ceiling is provided with Storage Time in Gas Collecting Bag；Described confined chamber casing is rectangular box, and described circulation air path and temperature-adjusting device are fixed on closed casing rear portion, is provided with circulating fan in described circulation air path, and described circulating fan is arranged below pressure transducer；Being provided with control box a on the left of described confined chamber box house centre position, right side is provided with control box b, described control box a built with temperature sensor, and described control box b is built with temperature sensor, fuel tank heating plug and stand-by power supply；Described confined chamber casing crown center position is equipped with FID analyser sampling probe；Described confined chamber casing left upper portion leaves hydrocarbon air inlet/outlet, and described hydrocarbon air inlet/outlet is provided with circular air channel, and described circular air channel connects the aerator being disposed in the outdoor；Described frame is arranged on outside confined chamber casing, is provided with air compressor, vacuum pump and compressor of air conditioner in described frame；Described parametric controller is arranged on outside confined chamber casing, and described parametric controller is provided with computer, temperature and pressure instrument and electric control unit.
2. a kind of small-sized confined chamber for motorcycle fuel evaporation emissions measurement according to claim 1, it is characterized in that: described circulation air path is divided into epimere, stage casing and hypomere, described stage casing and the hypomere left and right sides are respectively arranged with a fan leaf type air inlet, dividing plate it is provided with, equipped with two exhaust fans on described dividing plate between described stage casing and epimere.
3. a kind of small-sized confined chamber for motorcycle fuel evaporation emissions measurement according to claim 2, it is characterized in that: described temperature-adjusting device is arranged in circulation air path epimere, described temperature-adjusting device includes heater and air outlet, anemobiagraph and temperature sensor are installed by described air outlet place
A kind of small-sized confined chamber for motorcycle fuel evaporation emissions measurement according to claim 1, it is characterised in that: described confined chamber casing top nose is equipped with pressure transducer；Described confined chamber casing top rear is provided with camera probe.
4. a kind of small-sized confined chamber for motorcycle fuel evaporation emissions measurement according to claim 1, it is characterized in that: described circular air channel is built with support, described support is fixed with cylinder, described cylinder lower end is fixed with air channel pallet, described air channel tray edge is provided with rectangular groove, has silica gel sealing bar in described groove.
5. a kind of small-sized confined chamber for motorcycle fuel evaporation emissions measurement according to claim 1, it is characterized in that: described confined chamber casing top sets the upper right corner and has square opening, described square opening is fixed rustless steel air plug plate a and air plug plate b, described air plug plate a has 3 aviation plug circular holes and 2 tetrafluoro tracheas are imported and exported.
6. a kind of small-sized confined chamber for motorcycle fuel evaporation emissions measurement according to claim 1, it is characterized in that: described confined chamber casing front end is provided with confined chamber door, fixed optical axis in the middle of described confined chamber door, described optical axis connects the cylinder b being located at outside confined chamber casing.
7. a kind of small-sized confined chamber for motorcycle fuel evaporation emissions measurement according to claim 7, it is characterised in that: have circular visual window above described confined chamber door.
8. a kind of small-sized confined chamber for motorcycle fuel evaporation emissions measurement according to claim 1, it is characterised in that: it is provided with extension type antistatic alarm on the left of described confined chamber box bottom.
9. a kind of small-sized confined chamber for motorcycle fuel evaporation emissions measurement according to claim 1, it is characterised in that: described confined chamber casing is supported by steelframe, and described confined chamber casing and steelframe stainless steel welded form by 316.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410799701.6A CN105784922A (en) | 2014-12-19 | 2014-12-19 | Small-size closed chamber for measuring evaporative emission of fuel of motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410799701.6A CN105784922A (en) | 2014-12-19 | 2014-12-19 | Small-size closed chamber for measuring evaporative emission of fuel of motorcycle |
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| Publication Number | Publication Date |
|---|---|
| CN105784922A true CN105784922A (en) | 2016-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410799701.6A Pending CN105784922A (en) | 2014-12-19 | 2014-12-19 | Small-size closed chamber for measuring evaporative emission of fuel of motorcycle |
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| CN (1) | CN105784922A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112414724A (en) * | 2020-11-18 | 2021-02-26 | 上海市环境科学研究院 | Testing device and testing method for evaporative emission of gasoline vehicle |
| CN117741016A (en) * | 2024-02-20 | 2024-03-22 | 中汽研汽车检验中心（天津）有限公司 | Volatile organic compound escape emission test method and device |
-
2014
- 2014-12-19 CN CN201410799701.6A patent/CN105784922A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112414724A (en) * | 2020-11-18 | 2021-02-26 | 上海市环境科学研究院 | Testing device and testing method for evaporative emission of gasoline vehicle |
| CN117741016A (en) * | 2024-02-20 | 2024-03-22 | 中汽研汽车检验中心（天津）有限公司 | Volatile organic compound escape emission test method and device |
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Application publication date: 20160720 |
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| WD01 | Invention patent application deemed withdrawn after publication |