CN109162834A - Monoblock type divides chamber partition and its canister - Google Patents
Monoblock type divides chamber partition and its canister Download PDFInfo
- Publication number
- CN109162834A CN109162834A CN201811134094.6A CN201811134094A CN109162834A CN 109162834 A CN109162834 A CN 109162834A CN 201811134094 A CN201811134094 A CN 201811134094A CN 109162834 A CN109162834 A CN 109162834A
- Authority
- CN
- China
- Prior art keywords
- monoblock type
- chamber partition
- supporting plate
- lower supporting
- canister
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005192 partition Methods 0.000 title claims abstract description 46
- 239000003351 stiffener Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 13
- 210000002615 epidermis Anatomy 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 10
- 239000011159 matrix material Substances 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 4
- 238000003491 array Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 230000035425 carbon utilization Effects 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 53
- 229910052799 carbon Inorganic materials 0.000 description 53
- 239000003610 charcoal Substances 0.000 description 11
- 238000003795 desorption Methods 0.000 description 11
- 239000010410 layer Substances 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 6
- 239000004745 nonwoven fabric Substances 0.000 description 6
- 238000001179 sorption measurement Methods 0.000 description 6
- 125000006850 spacer group Chemical group 0.000 description 6
- 235000012773 waffles Nutrition 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000003502 gasoline Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 206010009856 Cold exposure injury Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
- F02M25/0854—Details of the absorption canister
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The present invention relates to monoblock types to divide chamber partition and its canister, the monoblock type divides chamber partition upper backup pad, lower supporting plate, and the stiffener plate that muti-piece both ends are connect with upper backup pad and lower supporting plate respectively, stiffener plate and upper backup pad described in muti-piece and lower supporting plate are integrally formed.Monoblock type of the present invention divides chamber diaphragm structure reasonable, simple for assembly process, can effectively improve powdered carbon utilization rate, reduce HC discharge quantity.
Description
Technical field
The invention belongs to fuel evaporation control system fields, and in particular to monoblock type divides chamber partition and its canister.
Background technique
The gasoline that automobile uses is easy to evaporate into atmosphere, and environmental law is launched respectively in countries in the world to solve this problem
Rule are to limit the quantity that gasoline vapor is discharged into atmosphere.The U.S. and China put into effect emission regulation respectively to control automobile at this stage
The quantity that gasoline vapor discharges when oiling, requires the charcoal tank volume of present common design to increase 1.5 to 2.5 to meet this
Times, this requires that reserving biggish design space to canister.A kind of state is because design space limit value can be such that canister designs
Draw ratio be greater than 5.6, if draw ratio greater than 5.6 space in directly filling powdered carbon, will result in powdered carbon utilization efficiency
Decline, or even will cause HC discharge when 2DBL is tested and exceed limit value requirement.Another situation is because same chamber needs to fill
Two different kinds of active powdered carbon is filled, if without dividing chamber, different activities powdered carbon is easy to load in mixture together, cannot achieve not
With the purpose of design of HC concentration difference, HC discharge is beyond limit value requirement when will cause 2DBL test.
Application No. is 201721768801.8 Chinese patents to disclose a kind of isolation structure for separating two kinds of powdered carbons, it is wrapped
Spacer and lower spacer are included, the upper spacer and the lower spacer are fastened and connected, which not only increases
The triviality of canister packaging technology, intermediate unbraced structure can make the connection structure of whole device more fragile, be easy to appear
The risk of deformation or fracture.The attached drawing 1 of the patent is examined it can be found that the gap structure of upper spacer and lower spacer is equal
For a plurality of concentric ring fill gap, air-flow pass through the isolation structure when pass rapidly through, the effects of reduced temperature of carbon dust is unobvious, to absorption/
Efficiency is desorbed also without substantial effect.
Summary of the invention
It is an object of the invention to overcome problems of the prior art, a kind of entirety that can be assembled in canister is provided
Formula divides chamber partition, structurally reasonable, simple for assembly process, can effectively improve powdered carbon utilization rate, reduce HC discharge quantity.
Monoblock type provided by the present invention divide chamber partition include upper backup pad, lower supporting plate and muti-piece both ends respectively with
The stiffener plate that upper backup pad is connected with lower supporting plate, stiffener plate and upper backup pad described in muti-piece and lower supporting plate one at
Type；
The upper backup pad is made of upper substrate and upper epidermis, and the lower supporting plate is made of lower substrate and layer, institute
It states upper epidermis and the layer is oppositely arranged, the upper epidermis offers multiple strip crevices in matrix arrangement, described
Layer offers multiple annular gap in concentric arrays.
When dividing chamber partition to be assembled in canister above-mentioned monoblock type, a powdered carbon chamber can be divided into two powdered carbon chambers and
One air chamber, the two powdered carbon chambers filling same type or different types of powdered carbon, monoblock type can divide the branch of chamber partition respectively
Support force from spring and compress baffle combination power subtract the second chamber powdered carbon (lower supporting plate powdered carbon below) from gravity.Add
The fuel-steam volatilized out of fuel tank when oily or when vehicle stops entering in air chamber after the first chamber powdered carbon, by
In the transformation of medium and the transformation of gap structure, air chamber interior air-flow speed slows down and converges in air chamber, into second
It is entire big section when chamber powdered carbon and is slowly adsorbed, can thus greatly improves the adsorbance of the second chamber powdered carbon.And start
When machine is worked, negative pressure will form at the desorption mouth of canister, fresh air enters from canister atmospheric air port, passes through the second chamber powdered carbon
The speed of Shi Liudong can slow down and can converge in air chamber, be entire big section when into the first chamber powdered carbon and slowly carry out
Desorption thus can be desorbed dead zone to avoid powdered carbon and reduce survival rate.Monoblock type divides the upper backup pad of chamber partition in matrix form hole
Gap, lower supporting plate are in concentric-ring pattern hole, and in disorder air-flow can be adjusted to parastate, concentric-ring pattern hole by matrix form hole
Gap can be upset with parastate air-flow；HC gas passes through two different mediums (active powdered carbon and air) and different flow directions
Adjustment, will can reduce HC Diffusion of gas stream speed, improve the utilization efficiency of powdered carbon.
Further, the root of the stiffener plate respectively with upper epidermis and layer arc transition.
The connection type of arc transition can reduce the shear stress (improving intensity) for supporting that two pieces of support plates are subject to up and down,
It can be reduced material weight again to reduce cost；The volume of air mixing chamber can also be increased simultaneously, reduce air-flow in air
Chamber internal diffusional resistance.
Further, the gap width of the strip crevice and annular gap is respectively 0.8mm~1.2mm.
To meet new emission request, powdered carbon used is usually column activity of the diameter not less than 1.5mm in car carbon tank
Charcoal, by the gap width of strip crevice and annulus slot be arranged in 0.8mm~1.2mm, both can guarantee the obstructed excessive chamber of powdered carbon every
Plate, and can guarantee biggish breathing area to reduce the ventilation pressure drop of canister.
Further, periphery of the lower supporting plate far from upper backup pad side is pasted integrally formed with multiple with canister inner cavity
The joint flash of conjunction.
The joint flash is flaky, and there are certain intervals between each adjacent two joint flash, several joint flashes are combined
It is tiltedly flexed outward in opotism formula.Preferably, joint flash with a thickness of 0.3mm~0.5mm.
Further, associated canister inner cavity is distinguished in the periphery of the upper backup pad and the periphery of the lower supporting plate
Clearance fit, the associated canister inner cavity interference fit in the root of the joint flash.
The fit system of the upper backup pad and the lower supporting plate can guarantee that monoblock type divides chamber partition in canister inner cavity
It moves freely, elastic force to the powdered carbon for not influencing spring transmits；And the fit system of the joint flash can then guarantee that monoblock type divides chamber
Partition is located at the middle part of canister inner cavity, plays the role of positioning and guiding.
Further, the lower supporting plate is integrally formed with the tube shape bulge extended downwardly.The boss can be convenient machinery
Hand or manpower crawl, improve assembly efficiency.
Further, foregoing monoblock type divides chamber partition to be made using single injection-molded technique.It does not need in addition
Welding or assembly other parts are to divide powdered carbon chamber.
Divide chamber partition based on monoblock type above-mentioned, the present invention also provides a kind of canister, at least one chambers of the canister
It is inside assembled with aforementioned monoblock type and divides chamber partition.
Beneficial effects of the present invention:
Monoblock type of the present invention is divided to chamber partition that single chamber can be separated into two powdered carbon chambers and an air chamber, no
Address only draw ratio problem, moreover it is possible to filling two different kinds of powdered carbon in the same chamber.When being assembled in canister, upper branch
Different gap arrangement forms can extend air-flow out across the time on fagging and lower supporting plate, and gas flow temperature is effectively reduced, and
Increase the absorption and desorption efficiency of powdered carbon.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that monoblock type described in the embodiment of the present invention 1 divides chamber partition；
Fig. 2 is the main view that monoblock type described in the embodiment of the present invention 1 divides chamber partition；
Fig. 3 is the bottom view that monoblock type described in the embodiment of the present invention 1 divides chamber partition；
Fig. 4 is the structural schematic diagram of canister described in the embodiment of the present invention 2；
Fig. 5 is that monoblock type divides the air-flow schematic diagram near chamber partition in canister adsorption process described in the embodiment of the present invention 2；
In figure: charcoal tank shell 10；Atmosphere end non-woven fabrics 20；Powdered carbon B 30；Monoblock type divides chamber partition 40；Upper backup pad 41；
Upper substrate 41a；Upper epidermis 41b；Lower supporting plate 42；Lower substrate 42a；Layer 42b；Stiffener plate 43；Joint flash 44；Tube shape bulge
45；Powdered carbon A 50；Compress partition B 60；Spring B 70；Lower cover 80；Spring A 90；Compress partition A 100；Powdered carbon C 110；
Adsorb end non-woven fabrics 120；End non-woven fabrics 130 is desorbed；Upper end cover 140；Atmospheric air port A；Adsorption orifice T；Mouth P is desorbed.
Specific embodiment
Below in conjunction with the attached drawing performance that the present invention will be described in detail, but they are not constituted a limitation of the invention, and are only made
Citing.By specific embodiment, the present invention is described in further detail simultaneously.
A kind of monoblock type of embodiment 1 divides chamber partition
Monoblock type as shown in Figs. 1-3 divides chamber partition to be made by engineering plastics through single injection-molded, it includes upper support
Plate 41 and lower supporting plate 42, and four stiffener plates 43 between upper backup pad 41 and lower supporting plate 42, described in four
Stiffener plate 43 is " work " letter stencil, is staggered to form " rich " word structure.
The upper backup pad 41 is made of upper substrate 41a and upper epidermis 41b, and the upper substrate 41a is waffle slab, waffle slab
Thickness be about 2mm, waffle slab is equipped with the upper epidermis 41b that thickness is about 1.5mm, the upper table towards the side of lower supporting plate 42
Layer 41b offers multiple strip crevices in matrix arrangement, and the gap width of each strip crevice is about 1mm.
The lower supporting plate 42 is made of lower substrate 42a and layer 42b, and the lower substrate 42a is also waffle slab, grid
The thickness of plate is about 2mm, and waffle slab is equipped with the layer 42b that thickness is about 1.5mm towards the side of upper backup pad 41.Under described
Surface layer 42b offers multiple annular gap in concentric arrays, and the gap width of each annular gap is about 1mm.In this reality
It applies in example, periphery of the lower supporting plate 42 far from 41 side of upper backup pad is bonded integrally formed with several with canister inner cavity
Joint flash 44, several described joint flashes 44 are about the thin slice of 0.3mm and tiltedly flex outward.In lower supporting plate 42 described in the present embodiment
The tube shape bulge 45 that portion is about also 10mm integrally formed with height.
The both ends of four stiffener plates 43 are connect with upper backup pad 41 and lower supporting plate 42 respectively, are added described in four
The root of strengthening tendons plate 43 respectively with upper epidermis 41b and layer 42b arc transition.In the present embodiment, the thickness of stiffener plate
It is identical as orifice plate thickness, it is generated to avoid injection molding shrink mark.The height of stiffener plate is about 6mm.
With in the design of the fit dimension of canister inner cavity, the associated canister inner cavity in periphery of the upper backup pad 41 is set
It is calculated as unilateral gap 0.5mm, the associated canister inner cavity in periphery of the lower supporting plate 42 is designed as unilateral gap 0.5mm,
Fully ensure that point chamber partition can move freely at canister inner cavity, elastic force to the powdered carbon for not influencing spring transmits.And joint flash 44
Root, the unilateral interference 0.5mm in canister inner cavity with matching, it is ensured that the present apparatus is located at the middle part of canister inner cavity.
A kind of canister for dividing chamber partition comprising monoblock type of embodiment 2
As shown in figure 4, the present embodiment is the canister of typical three kinds different powdered carbon models and volume.Upper end cover 140 and charcoal
Tank shell 10 is welded as a whole to form a liquid collecting chamber, can accommodate the liquid fuel of the certain volume overflowed out of fuel tank,
It avoids fuel oil from being directly entered in powdered carbon C 110 and causes disabler.
The inside of the charcoal tank shell 10 is equipped with vertical partition, and the space in shell 10 is divided into chamber I side by side
With chamber II.The top of the chamber I is connected with adsorption orifice T and desorption mouth P, inside equipped with powdered carbon C 110；The chamber II's
Top is connected with atmospheric air port A, and inside is equipped with monoblock type and divides chamber partition 40, divides below chamber partition 40 equipped with powdered carbon A 50, top
Equipped with powdered carbon B 30, powdered carbon C 110 has unit volume high adsorption, the opposite desorption higher feature of residual rate, powdered carbon B 30
Have the feature that unit volume adsorptivity is low, opposite desorption residual rate is minimum, and powdered carbon A 50 then selects to adsorb under unit volume
Property general, the opposite desorption lower type of residual rate；The volume ratio of powdered carbon C 110, powdered carbon A 50 and powdered carbon B 30 are 7:2:
1。
The lower cover 80 is welded as a whole by friction welding process with charcoal tank shell 10, and the elastic force of spring A 90 passes through
The transmitting for compressing partition A 100 acts on powdered carbon C 110, and the elastic force of spring B 70 is by compressing partition B 60 and monoblock type
Divide the transmitting of chamber partition 40 to act on powdered carbon A 50 and powdered carbon B 30, can avoid mutual between charcoal powder particles when Vehicular vibration
Abrasion leads to powdered carbon disabler.
Absorption end non-woven fabrics 120 and desorption end non-woven fabrics 130 are welded on by ultrasonic bonding process with charcoal tank shell 10
Together, atmosphere end non-woven fabrics 20 welds together also through ultrasonic bonding process with charcoal tank shell 10, they can be prevented
Powdered carbon C 110 is precipitated out of charcoal tank shell 10.
In the present embodiment, chamber partition 40 is divided to separate using monoblock type between powdered carbon B 30 and powdered carbon A 50, i.e., in fact
An intracavitary two distinct types of powdered carbon of filling is showed, and can be improved powdered carbon absorption property, reduces powdered carbon desorption residual rate.It is whole
Body formula divides air flow method of the chamber partition 40 in canister adsorption process as shown in figure 5, HC air-flow reaches air-flow by lower supporting plate
Behind mixed zone, air velocity is obviously reduced and has been partially formed spin states, can be sufficiently mixed the HC of various concentration.Air-flow passes through
After upper backup pad, airflow direction is adjusted to parastate, can make the absorption HC of active powdered carbon more evenly.The flow direction of desorption process with
Adsorption process is just opposite.
Table 1 is the performance test results that the present embodiment canister (TG1) and nothing divide chamber partition canister (TG2), and the nothing divides chamber
Partition canister (TG2) is using the identical charcoal tank shell with the present embodiment canister (TG1), and filling same specification and same volume
Powdered carbon.
The performance test results of table 1:TG1 and TG2
From table 1 it follows that increase divides absorption pressure drop after chamber partition to be increased slightly, BWC value has obvious rising, and 2DBL is surveyed
Emission limit can be reduced to 35 milligrams/test by examination canister under conditions of identical desorption volume (350L).
The content that this specification is not described in detail belongs to the prior art well known to professional and technical personnel in the field.
Claims (8)
1. monoblock type divides chamber partition, it is characterised in that: equal including upper backup pad (41), lower supporting plate (42) and muti-piece both ends
The stiffener plate (43) being connect respectively with upper backup pad (41) and lower supporting plate (42), stiffener plate (43) and upper branch described in muti-piece
Fagging (41) and lower supporting plate (42) are integrally formed；
The upper backup pad (41) is made of upper substrate (41a) and upper epidermis (41b), and the lower supporting plate (42) is by lower substrate
(42a) and layer (42b) composition, the upper epidermis (41b) and the layer (42b) are oppositely arranged, the upper epidermis
(41b) offers multiple strip crevices in matrix arrangement, and the layer (42b) offers in the multiple of concentric arrays
Annular gap.
2. monoblock type according to claim 1 divides chamber partition, it is characterised in that: distinguish the root of the stiffener plate (43)
With upper epidermis (41b) and layer (42b) arc transition.
3. monoblock type according to claim 2 divides chamber partition, it is characterised in that: the seam of the strip crevice and annular gap
Gap width is respectively 0.8mm~1.2mm.
4. monoblock type according to claim 3 divides chamber partition, it is characterised in that: the lower supporting plate (42) is far from upper support
The periphery of plate (41) side is integrally formed with multiple joint flashes (44) being bonded with canister inner cavity.
5. monoblock type according to claim 4 divides chamber partition, it is characterised in that: the periphery of the upper backup pad (41) and institute
The periphery difference associated canister inner cavity clearance fit of lower supporting plate (42) is stated, the root of the joint flash (44) matches with it
Canister inner cavity interference fit.
6. monoblock type according to claim 5 divides chamber partition, it is characterised in that: the lower supporting plate (42) is also integrally formed
There is the tube shape bulge (45) extended downwardly.
7. monoblock type according to claim 1 to 6 divides chamber partition, it is characterised in that: use single injection-molded
Technique is made.
8. a kind of canister, it is characterised in that: be assembled with any one of claim 1-7 institute at least one chamber of the canister
The monoblock type stated divides chamber partition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811134094.6A CN109162834B (en) | 2018-09-27 | 2018-09-27 | Integral type cavity separating partition plate and carbon tank thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811134094.6A CN109162834B (en) | 2018-09-27 | 2018-09-27 | Integral type cavity separating partition plate and carbon tank thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109162834A true CN109162834A (en) | 2019-01-08 |
| CN109162834B CN109162834B (en) | 2023-10-27 |
Family
ID=64892693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811134094.6A Active CN109162834B (en) | 2018-09-27 | 2018-09-27 | Integral type cavity separating partition plate and carbon tank thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109162834B (en) |
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