CN105781696B - A kind of automobile canister experimental rig - Google Patents
A kind of automobile canister experimental rig Download PDFInfo
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- CN105781696B CN105781696B CN201410821426.3A CN201410821426A CN105781696B CN 105781696 B CN105781696 B CN 105781696B CN 201410821426 A CN201410821426 A CN 201410821426A CN 105781696 B CN105781696 B CN 105781696B
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- canister
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
The invention discloses a kind of automobile canister experimental rig, can meet the needs of adsorption test and desorption experiment with test battery device, can also meet the demand that the standard of automobile state five is tested the initial operating capability of canister.Its technical scheme is：The gas piping of canister experimental rig has been redesigned, has improved gas flow so that it is consistent with running status in the car to test the trystate of canister, so as to substantially increase the stability of test accuracy and data.Pass through control of the programmable controller circuit (PLC) to the on-off action of each magnetic valve, the emulation adsorption capacity experiment of canister, the emulation desorption ability experiment of canister and the initial operating capability experiment of canister can be met in the canister experimental rig that same circuits connect, it is achieved thereby that the full-automatic reusable edible of benchmark canister, reduces the difficulty that equipment is measured.
Description
Technical field
The present invention relates to automobile canister experiment, more particularly to can complete adsorption test in same set of experimental rig also can be complete
Into the technology of desorption experiment.
Background technology
At present, as shown in figure 1, there is single (the only list of test function in the principle of the automobile canister testing equipment of in the market
One absorption or desorption experiment) and the problem of experiment stability, poor repeatability be present.Need what is used test simultaneously during
With reference to canister due to being in passive adsorption state, it is necessary to constantly update over a long time, conventional efficient is largely effected on.
Because canister is the very important control device that discharges pollutants on automobile, vehicle fuel evaporation capacity is even more controlled
Core component, therefore false test data can demarcate exploitation to automobile, sizing causes negative impact, and then is further exacerbated by
Pollution, the increase of automobile fuel consumption amount of atmospheric environment.
Relevant document also discloses that the principle of part canister testing equipment, and the unstable master of its result of the test is caused through analysis
It is that the actual working state of the trystate and canister of canister on vehicle is incomplete same to want reason, and this has resulted in actual carbon
The development goal of tank operating efficiency and Automobile Enterprises has larger deviation.
At the beginning of 2014, discharge standard GB18352.5-2013 of Light-duty Vehicle state of China five《Light-duty vehicle pollutant emission limits
Value and measuring method (Chinese 5th stage)》Put into effect, require to carry out canister adsorption test wherein before evaporative pollutants emission testing,
And " experiment of canister initial operating capability " is increased newly.As newly-increased supporting authentication item important in the standard of state five, major vehicle
There is larger experiment demand in manufacturer after regulation appearance, but current experimental rig is difficult to meet this experiment demand.
The content of the invention
The brief overview of one or more aspects given below is to provide to the basic comprehension in terms of these.This general introduction is not
The extensive overview of all aspects contemplated, and the key or decisive key element for being both not intended to identify all aspects is also non-
Attempt to define the scope in terms of any or all.Its unique purpose is to provide the one of one or more aspects in simplified form
A little concepts think the sequence of more detailed description given later.
It is an object of the invention to solve the above problems, there is provided a kind of automobile canister experimental rig, can use test battery
Device meets the needs of adsorption test and desorption experiment, can also meet that the standard of automobile state five is tried the initial operating capability of canister
The demand tested.
The technical scheme is that：Present invention is disclosed a kind of automobile canister experimental rig, device includes programmable control
Circuit processed, the first electronic balance, the second electronic balance, test canister, benchmark canister, wherein test canister is located at the first electronics day
On flat, benchmark canister is located on the second electronic balance, and the adsorption orifice for testing canister connects first gas source by the first magnetic valve
With the mixing source in second gas source, the desorption mouth for testing canister connects the first threeway by second solenoid valve, tests the logical of canister
Atmospheric air port connects the second threeway, and the adsorption orifice of benchmark canister connects the second threeway, the desorption of benchmark canister by the 3rd magnetic valve
Mouth passes through the 4th magnetic valve and connects the first threeway, and the atmosphere entry of benchmark canister connects the 3rd threeway, the second threeway connection the 4th
Threeway, the 4th threeway connect single second gas source by the 5th magnetic valve, and the 4th threeway connects the 3rd threeway, the 3rd threeway
5th threeway is connected by the 6th magnetic valve, the 5th threeway connects the first threeway by the 7th magnetic valve, and the 5th threeway connection is useless
Gas outlet, programmable control circuit pass through to the first magnetic valve, second solenoid valve, the 3rd magnetic valve, the 4th magnetic valve, the 5th
The control of magnetic valve, the 6th magnetic valve and the 7th magnetic valve, implement the mixed gas of first gas and second gas in device
In trend.
It is equal at first gas source and at second gas source according to an embodiment of the automobile canister experimental rig of the present invention
Gas flowmeter is installed.
According to an embodiment of the automobile canister experimental rig of the present invention, first gas is the simulation gas of gasoline vapor,
Second gas is to clean gas.
, can in the emulation adsorption test of test canister according to an embodiment of the automobile canister experimental rig of the present invention
Programming Control circuit passes through to the first magnetic valve, second solenoid valve, the 3rd magnetic valve, the 4th magnetic valve, the 5th magnetic valve, the 6th
The control of magnetic valve and the 7th magnetic valve, the mixed gas of first gas and second gas is entered first at mixing source and survey
The adsorption orifice of canister is tried, then by the logical big of the atmosphere entry of test canister, the adsorption orifice of benchmark canister and benchmark canister
After gas port, finally discharged from outlet port.
, can in the emulation desorption experiment of test canister according to an embodiment of the automobile canister experimental rig of the present invention
Programming Control circuit passes through to the first magnetic valve, second solenoid valve, the 3rd magnetic valve, the 4th magnetic valve, the 5th magnetic valve, the 6th
The control of magnetic valve and the 7th magnetic valve, make second gas first at single second gas source by the 4th threeway simultaneously
The atmosphere entry of test canister and benchmark canister is respectively enterd, then respectively enters the desorption of test canister and benchmark canister simultaneously
Mouthful, it is aggregated into outlet port discharge finally by the 5th threeway.
According to an embodiment of the automobile canister experimental rig of the present invention, in the initial operating capability experiment of test canister
In, programmable control circuit passes through to the first magnetic valve, second solenoid valve, the 3rd magnetic valve, the 4th magnetic valve, the 5th electromagnetism
The control of valve, the 6th magnetic valve and the 7th magnetic valve, repeat to test the emulation adsorption test of canister and emulation desorption examination
Test.
Present invention contrast prior art has following beneficial effect：The present invention has redesigned the gas of canister experimental rig
Pipeline, improve gas flow so that it is consistent with running status in the car to test the trystate of canister, so as to carry significantly
The high stability of test accuracy and data.By programmable controller circuit (PLC) to the on-off action of each magnetic valve
Control, the experiment of emulation adsorption capacity, the emulation of canister of canister can be met in the canister experimental rig that same circuits connect
Desorption ability is tested and the experiment of the initial operating capability of canister, it is achieved thereby that the full-automatic reusable edible of benchmark canister,
Reduce the difficulty of equipment metering.
Brief description of the drawings
Fig. 1 shows the structure of traditional automobile canister experimental rig.
Fig. 2 shows schematic diagram of the automobile canister experimental rig of the present invention in canister emulates adsorption test.
Fig. 3 shows schematic diagram of the automobile canister experimental rig of the present invention in canister emulates desorption experiment.
Fig. 4 shows schematic diagram of the automobile canister experimental rig of the present invention in the experiment of canister initial operating capability.
Embodiment
After the detailed description of embodiment of the disclosure is read in conjunction with the following drawings, it better understood when the present invention's
Features described above and advantage.In the accompanying drawings, each component is not necessarily drawn to scale, and has similar correlation properties or feature
Component may have same or like reference.
Operation principle and effect of the canister on automobile are introduced first.Fuel tank often fills up gasoline vapour at normal temperatures,
Gasoline car fuel tank can be such that a large amount of gasoline vapours are arranged by passage into air when temperature and pressure change.Fuel oil steams
The effect of hair emission control systems is to be introduced into steam to burn and prevent from evaporateing into air.What this process played an important role is
Activated carbon canister.Activated carbon has adsorption function, when automobilism or it is flame-out when, the gasoline vapour of fuel tank passes through pipeline and enters activity
The top of canister, fresh air then enter activated carbon canister from activated carbon canister bottom.After engine misses, gasoline vapour and fresh sky
Gas is in in-tank mixing and is stored in activated carbon canister, after engine starts, the combustion between activated carbon canister and inlet manifold
The valve of oily evaporated and purified device is opened, and the gasoline vapour in activated carbon canister is inhaled into inlet manifold and participates in burning.So as to reduce
Oil gas leaks, and is advantageous to environmental protection and saves the energy.
Fig. 2 shows principle of the automobile canister experimental rig of the present invention in canister emulates adsorption test, and Fig. 3 is shown
Principle of the automobile canister experimental rig of the present invention in canister emulates desorption experiment, Fig. 4 show the automobile canister of the present invention
Principle of the experimental rig in the experiment of canister initial operating capability.Pipeline connection in these three experiments is all identical.
Please referring also to Fig. 2 to Fig. 4, automobile canister experimental rig of the invention include the electricity of programmable control circuit 1, first
Sub- balance 2, the second electronic balance 3, test canister 4, benchmark canister 5, wherein test canister 4 is located on the first electronic balance 2, base
Quasi- canister 5 is located on the second electronic balance 3.
Test the adsorption orifice 4a of canister 4 by the first magnetic valve 61 connect first gas source (be in the present embodiment butane,
Simulation gas as gasoline vapor) and second gas source (be in this embodiment nitrogen, as clean gas) mixing source,
Gas flowmeter 81 and 82 is installed respectively at first gas source and second gas source as mixing source.Test the desorption of canister 4
Mouth 4b passes through second solenoid valve 62 and connects the first threeway 71, and the atmosphere entry 4c of test canister 4 connects the second threeway 72.
The adsorption orifice 5a of benchmark canister 5 connects the second threeway 72, the desorption mouth 5b of benchmark canister 5 by the 3rd magnetic valve 63
First threeway 71 is connected by the 4th magnetic valve 64, the atmosphere entry 5c of benchmark canister 5 connects the 3rd threeway 73.Second threeway 72
Connect the 4th threeway 74, the 4th threeway 74 by the 5th magnetic valve 65 connect single second gas source (in the present embodiment for
Nitrogen), and gas flowmeter 83 is installed at this single second gas source.4th threeway 74 the 3rd threeway 73 of connection, the 3rd
Threeway 73 connects the 5th threeway 75 by the 6th magnetic valve 66, and the 5th threeway 75 connects the first threeway by the 7th magnetic valve 67
71, the 5th threeway 75 connection outlet port.
Programmable control circuit 1 passes through to the first magnetic valve 61, second solenoid valve 62, the 3rd magnetic valve 63, the 4th electromagnetism
The control of valve 64, the 5th magnetic valve 65, the 6th magnetic valve 66 and the 7th magnetic valve 67, implement first gas (in the present embodiment
In be butane) and second gas (being in the present embodiment nitrogen) mixed gas trend in a device.
Fig. 2 shows gas flow of the automobile canister experimental rig of the present invention in canister emulates adsorption test.Canister
Adsorption test be to carry out canister absorption using canister pretreatment unit, using the mixed of 50% volume butane and 50% volume nitrogen
Gas is closed, adsorbs canister with the flow of 40g/h butane, it is first auxiliary by Fig. 2 connecting tests canister and one in canister adsorption test
The benchmark canister helped, then canister is inhaled using the gaseous mixture of 50% volume butane and 50% volume nitrogen simulation oil vapour
It is attached.Mixing ratio, flow and the pressure of butane/nitrogen can be controlled accurately.Use the first electronic balance 2 and the second electronics day
Weight change trend of the flat 3 measurement canisters in processing procedure simultaneously records.In processing procedure, the oil vapour of gaseous mixture simulation is first
It is introduced into test canister 4.After the absorption of canister 4 is tested completely, oil vapour can enter the benchmark canister 5 of auxiliary naturally；When benchmark carbon
The quality of tank 5 increases 2g, then stops experiment, it is believed that test canister 4 adsorbs completely.
The system need to only be connected test canister 4 by Fig. 2 and the total interface of benchmark canister 5 (adsorption orifice, desorption mouth, leads to
Atmospheric air port), programmable control circuit 1 passes through to the first magnetic valve 61, second solenoid valve 62, the 3rd magnetic valve 63, the 4th electromagnetism
The control to gas trend, butane are realized in the control of valve 64, the 5th magnetic valve 65, the 6th magnetic valve 66 and the 7th magnetic valve 67
Trend with the gaseous mixture of nitrogen is：Initially enter the adsorption orifice 4a of test canister 4 --- the atmosphere entry of test canister
--- the adsorption orifice 5a of benchmark canister --- the atmosphere entry 5c of benchmark canister --- outlet port 9, overall process is completely certainly by 4c
Dynamic control is completed, and gas trend automatically controlling to adjust by multiple electromagnetic valves, accurate simulation canister is true on automobile
Working condition.
Fig. 3 shows gas flow of the automobile canister experimental rig of the present invention in canister emulates desorption experiment.In order to
The simulation test canister working condition that real iterative cycles recycle on automobile, the discharge standard of state five also specify canister and take off
The code of adhesion test, test requirements document uses (air or nitrogen) with 25 ± 5L/min flow desorption test canister, until reaching
To 300 times of canister bed volumes.
The system need to only be connected test canister 4 by Fig. 3 and the total interface of benchmark canister 5 (adsorption orifice, desorption mouth, leads to greatly
Gas port), programmable control circuit 1 passes through to the first magnetic valve 61, second solenoid valve 62, the 3rd magnetic valve 63, the 4th magnetic valve
64th, the control to gas trend is realized in the control of the 5th magnetic valve 65, the 6th magnetic valve 66 and the 7th magnetic valve 67.Nitrogen will
As cleaning gas, the trend of specific nitrogen is：Nitrogen respectively enters the logical air of test canister 4 by threeway 74 simultaneously first
Mouth 4c and benchmark canister 5 atmosphere entry 5c --- while respectively enter the desorption mouth 4b of test canister and the desorption of benchmark canister
Mouth 5b --- outlet port 9 is aggregated into by threeway 71, the fully automated control of overall process is completed, and gas trend leans on multiple electromagnetism
Valve is automatically controlled to adjust, real work state of the accurate simulation canister on automobile.The present invention by system pipeline,
The design of electromagnetic valve, test canister and benchmark canister can be desorbed simultaneously.
Fig. 4 shows gas flow of the automobile canister experimental rig of the present invention in the experiment of canister initial operating capability.
The experiment of canister initial operating capability is a newly-increased pilot project of the discharge standard of state five, and legacy automobile canister experimental rig
Not available test function.
Specific test cycle is more complicated, and (detailed testing regulations is shown in HJ/T 390《Pollutant of Evaporated Gasoline Vehicle control system
System》5.2 chapters and sections), 6 circulations of repetition (canister adsorption test+canister desorption experiment) are had main steps that, and record the 5th, 6 and follow
The average value of the canister quality of adsorption of ring, afterwards with reference to canister dischargeable capacity value, finally draw canister initial operating capability value.
This experiment need to only be connected test canister and benchmark canister total interface (adsorption orifice, desorption mouth, logical air by Fig. 4
Mouthful) after, system will operation function one (emulation absorption) shown in Fig. 2 and function two (emulation shown in Fig. 3 is desorbed) repeatedly automatically,
Because the brand-new control mode of the brand-new pipeline connecting mode of the present invention and system magnetic valve to test canister and benchmark canister
It can circulate and empty, not change benchmark canister manually, all contents of the test can be automatically performed.
The automobile canister experimental rig of the present invention is mainly used in meeting total Test of the discharge standard of automobile state five to canister
It is required that (the emulation adsorption test of canister, the emulation desorption experiment of canister, the initial operating capability experiment of canister), while can also be right
The various activated carbon canisters of different automobile types, applying working condition of the simulation canister on vehicle, are measured canister situation in real time.
Compared with prior art, advantages of the present invention is as follows：
1) experiment stability is good, test accuracy is high：By the improve and perfect to gas flow chart, by system pipes
Road, control system Rule of judgment redesign, and make the trystate of test canister consistent with the running status in automobile, so as to big
The big stability for improving test accuracy and data.
2) " canister dischargeable capacity " test function is added, is allowed to meet the newest discharge standard of state five.
3) can be recycled for " benchmark canister " is realized, improves test efficiency.
4) demarcate, overhaul conveniently：By original single system decomposition into the autonomous system of two free switchings, it is easy to equipment
Demarcation and maintenance.
Offer is for so that any person skilled in the art all can make or use this public affairs to being previously described for the disclosure
Open.Various modifications to the disclosure all will be apparent for a person skilled in the art, and as defined herein general
Suitable principle can be applied to spirit or scope of other variants without departing from the disclosure.Thus, the disclosure is not intended to be limited
Due to example described herein and design, but should be awarded and principle disclosed herein and novel features phase one
The widest scope of cause.
Claims (6)
1. a kind of automobile canister experimental rig, it is characterised in that device includes programmable control circuit, the first electronic balance, the
Two electronic balances, test canister, benchmark canister, wherein test canister is located on the first electronic balance, benchmark canister is located at second
On electronic balance, the adsorption orifice for testing canister connects the mixing source in first gas source and second gas source by the first magnetic valve,
The desorption mouth for testing canister connects the first threeway by second solenoid valve, and the atmosphere entry for testing canister connects the second threeway, base
The adsorption orifice of quasi- canister connects the second threeway by the 3rd magnetic valve, and the desorption mouth of benchmark canister passes through the 4th magnetic valve connection the
One threeway, the atmosphere entry of benchmark canister connect the 3rd threeway, and the second threeway connects the 4th threeway, and the 4th threeway passes through the 5th electricity
Magnet valve connects single second gas source, and the 4th threeway connects the 3rd threeway, and the 3rd threeway connects the 5th by the 6th magnetic valve
Threeway, the 5th threeway connect the first threeway, the 5th threeway connection outlet port, programmable control circuit by the 7th magnetic valve
By to the first magnetic valve, second solenoid valve, the 3rd magnetic valve, the 4th magnetic valve, the 5th magnetic valve, the 6th magnetic valve and
The trend of the mixed gas of the control of seven magnetic valves, implementation first gas and second gas in a device.
2. automobile canister experimental rig according to claim 1, it is characterised in that at first gas source and second gas
Gas flowmeter is respectively mounted at source.
3. automobile canister experimental rig according to claim 1, it is characterised in that first gas is the simulation of gasoline vapor
Gas, second gas are to clean gas.
4. automobile canister experimental rig according to claim 1, it is characterised in that in the emulation adsorption test of test canister
In, programmable control circuit passes through to the first magnetic valve, second solenoid valve, the 3rd magnetic valve, the 4th magnetic valve, the 5th electromagnetism
The control of valve, the 6th magnetic valve and the 7th magnetic valve, make the mixed gas of first gas and second gas first from mixing source
Place enters the adsorption orifice of test canister, then by atmosphere entry, the adsorption orifice and benchmark carbon of benchmark canister of test canister
After the atmosphere entry of tank, finally discharged from outlet port.
5. automobile canister experimental rig according to claim 1, it is characterised in that be desorbed experiment in the emulation of test canister
In, programmable control circuit passes through to the first magnetic valve, second solenoid valve, the 3rd magnetic valve, the 4th magnetic valve, the 5th electromagnetism
The control of valve, the 6th magnetic valve and the 7th magnetic valve, make second gas first at single second gas source by the 4th
Threeway respectively enters the atmosphere entry of test canister and benchmark canister simultaneously, then respectively enters test canister and benchmark carbon simultaneously
The desorption mouth of tank, outlet port discharge is aggregated into finally by the 5th threeway.
6. automobile canister experimental rig according to claim 1, it is characterised in that in the initial operating capability of test canister
In experiment, programmable control circuit passes through to the first magnetic valve, second solenoid valve, the 3rd magnetic valve, the 4th magnetic valve, the 5th electricity
The control of magnet valve, the 6th magnetic valve and the 7th magnetic valve, repeat to test the emulation adsorption test of canister and emulation is desorbed
Experiment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410821426.3A CN105781696B (en) | 2014-12-22 | 2014-12-22 | A kind of automobile canister experimental rig |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410821426.3A CN105781696B (en) | 2014-12-22 | 2014-12-22 | A kind of automobile canister experimental rig |
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| CN105781696A CN105781696A (en) | 2016-07-20 |
| CN105781696B true CN105781696B (en) | 2018-03-02 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106769104B (en) * | 2017-02-15 | 2023-10-20 | 中国汽车技术研究中心有限公司 | Fuel system carbon tank desorption calibration data acquisition system |
| CN108827645B (en) * | 2018-03-27 | 2020-06-26 | 江铃汽车股份有限公司 | Method for testing hydrocarbon evaporation emission of fuel system |
| CN109209684A (en) * | 2018-08-01 | 2019-01-15 | 上海机动车检测认证技术研究中心有限公司 | A kind of canister desorption detection device |
| CN109612872B (en) * | 2018-12-11 | 2021-06-15 | 江铃汽车股份有限公司 | Carbon tank development method meeting national six-evaporative emission regulations |
| CN109900496A (en) * | 2019-03-15 | 2019-06-18 | 堀场仪器（上海）有限公司 | Canister pilot system and its operating method |
| CN110441186A (en) * | 2019-09-05 | 2019-11-12 | 上海机动车检测认证技术研究中心有限公司 | A kind of canister pilot system and its test method |
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| EP1710427A2 (en) * | 2005-04-07 | 2006-10-11 | Daimlerchrysler Corporation | Vehicle evaporative system diagnostic |
| CN102116726A (en) * | 2009-12-30 | 2011-07-06 | 新大洲本田摩托有限公司 | Activated carbon tank quick aging detection device and detection method thereof |
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