CN101886590B - Adsorber of fuel vapor of motorcycles - Google Patents
Adsorber of fuel vapor of motorcycles Download PDFInfo
- Publication number
- CN101886590B CN101886590B CN2010102154504A CN201010215450A CN101886590B CN 101886590 B CN101886590 B CN 101886590B CN 2010102154504 A CN2010102154504 A CN 2010102154504A CN 201010215450 A CN201010215450 A CN 201010215450A CN 101886590 B CN101886590 B CN 101886590B
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- fuel tank
- tank cap
- joint
- fuel
- upper casing
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Abstract
The invention discloses an adsorber of fuel vapor of motorcycles. A fuel tank cap with a pressure balance channel is installed in a refill opening at the top of a fuel tank, the fuel tank cap is provided with a fuel tank cap upper shell, an internal component and a fuel tank cap lower shell, the internal component is installed in the fuel tank cap lower shell, the bottom of the fuel tank cap lower shell is provided with a gas inlet of the pressure balance channel and the top thereof is provided with a flanging, the fuel tank cap upper shell is buckled on the flanging, a gas outlet of the pressure balance channel is arranged on the top wall of the fuel tank cap upper shell and is connected with a joint, the joint is connected with the inlet of a carbon canister by an adsorption tube and the outlet of the carbon canister is connected with a carburetor by a desorption tube. The adsorber not only can balance the pressure inside and outside the fuel tank and ensure the fuel tank to normally supply fuel to the carburetor via a fuel tank switch, but also can adsorb the fuel vapor, prevent the fuel vapor from being exhausted into the atmosphere to pollute the environment and avoid fuel waste, and has the characteristics of reasonable design, easy implementation, reliable performance, low cost, strong universality, etc.
Description
Technical field
The invention belongs to technical field of motorcycles, specifically, the particularly oil vapor adsorbent equipment on the motorcycle.
Background technique
Motorcycle oil tank lid is installed in the oil filler at fuel tank top, plays sealing oil filler and oil gas collection.As shown in Figure 5; Traditional fuel tank cap is made up of fuel tank cap upper casing 2, fuel tank cap lower casing 4 and internal component 3 three parts; Wherein internal component 3 is installed in the fuel tank cap lower casing 4; The top of fuel tank cap lower casing 4 has flange 4a, and the cross section of this flange 4a is " ∩ " shape, and said fuel tank cap upper casing 2 spiral-locks are on the flange 4a at fuel tank cap lower casing 4 tops; And the external annulus of all sidewalls of fuel tank cap upper casing 2 and fuel tank cap lower casing " ∩ " shape flange 4a is fitted, and is spacing by the crimping of fuel tank cap upper casing 2 all sidewalls bottoms.For trim tank 1 inside and extraneous pressure; So that the fuel oil energy in the fuel tank gets in the Carburetor through the fuel tap that is arranged on the fuel tank bottom smoothly; Fuel tank cap is provided with air pressure balance passage 9; The suction port of this air pressure balance passage 9 is in the bottom surface of fuel tank cap lower casing 4, and anti-roll valve 13 and is equipped with near the suction port place in the air pressure balance passage 9 in air outlet 14 on the internal ring wall of fuel tank cap lower casing " ∩ " shape flange 4a; This anti-roll valve 13 can guarantee that in normal driving process gas is two-way through air pressure balance passage 9, can prevent that when motorcycle tilts or falls down fuel oil from flowing out from air pressure balance passage 9.Because the fuel oil in the fuel tank is volatile; Oil vapor can get into the air pressure balance passage under action of pressure, get into the gap of fuel tank cap and oil filler wall from the air outlet 14 of air pressure balance passage, thereby gets into atmosphere; Not only pollute the environment, but also can cause the fuel oil waste.
Be the pollution of control motorcycle pollutant emission to environment; Improve ambient air quality; Two-wheeled and motor tricycle III stage criterion have proposed new requirement to the discharging of two-wheeled or motor tricycle operating condition method exhaust contaminant, and in this case, above-mentioned fuel tank cap just can not satisfy new requirement.In order to satisfy state III standard, the producer that has sets up the oil vapor adsorbent equipment on motorcycle.Like Fig. 6, Fig. 7 and combine shown in Figure 5; This device is with air outlet 14 shutoff of fuel tank cap air pressure balance passage 9; Suitable local perforate simultaneously at fuel tank 1 top, this hole is connected through joint with vapourizer tube 16, after the anti-roll valve 15 of connecting; Be connected through the import of adsorption tube 5 with charcoal jar 6, the outlet of charcoal jar 6 is joined through desorption pipe 7 and Carburetor 8.Above structure is done change slightly with the structure of fuel tank cap; Make fuel tank cap only play sealing; Vapourizer tube 16, anti-roll valve 15, adsorption tube 5, charcoal jar 6, desorption pipe 7 and Carburetor 8 are formed the pipeline that communicates with the fuel tank inner chamber; Extraneous on the one hand atmosphere is communicated with fuel tank 1 through charcoal jar 6, anti-roll valve 15 and adsorption tube 5, can realize the function of trim tank external and internal pressure; On the other hand, the oil vapor in the fuel tank 1 gets into charcoal jar 6, is absorbed in the back entering Carburetor 8 by charcoal jar 6 and utilizes.Though said apparatus has reached certain preventing polluting effect, but still there is following deficiency:
1, the outer anti-roll valve of fuel tank needs independent processing and fabricating, and needs to be equipped with accessory such as anchor ear, has increased the cost of production of motorcycle.
2, the motorcycle of different automobile types, its Oiltank structure is also had any different, and such scheme is looked for a connection adsorption tube on fuel tank, big to the change of Oiltank structure, and the versatility between the different automobile types Oiltank structure is poor, has increased reforming cost thus.
3, anti-roll valve is in the outside of fuel tank; The position that is connected with fuel tank through adsorption tube is positioned at the peak of fuel tank, is splashed in the vapourizer tube though can prevent that fuel oil from agitating, and motorcycle tilts or when falling down; Fuel oil can pour in the adsorption tube before the anti-roll valve; Can not flow back to fuel tank, can cause pipeline blockage, make the disabler of adsorbed oil steam on the one hand; On the other hand, can in fuel tank, form negative pressure, cause fuel tank can not pass through fuel tap to the Carburetor normal fuel injection.
4, fuel tank cap is indiscriminately imitated conventional construction basically; Be difficult to fit fully between all sidewalls of fuel tank cap lower casing " ∩ " shape flange and fuel tank cap upper casing; Having small gaps produces; Still there is the problem of environmental pollution and fuel oil waste in oil vapor in the fuel tank, the requirement that does not reach state III standard easily through the outside escape of this small gaps.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of reliable performance, with low cost, adsorber of fuel vapor of motorcycles easily is installed.
Technological scheme of the present invention is following: a kind of adsorber of fuel vapor of motorcycles; Comprise fuel tank, fuel tank cap, adsorption tube, charcoal jar, desorption pipe and Carburetor; The fuel tank cap of band air pressure balance passage is installed in the oil filler at fuel tank top, and this fuel tank cap has fuel tank cap upper casing, internal component and fuel tank cap lower casing, and said internal component is contained in the fuel tank cap lower casing; The bottom of fuel tank cap lower casing has the suction port of air pressure balance passage; The top of fuel tank cap lower casing has the flange of cross section for " ∩ " shape, and said fuel tank cap upper casing spiral-lock is on the flange at fuel tank cap lower casing top, and its key is: the air outlet of said air pressure balance passage is arranged on the roof of fuel tank cap upper casing; Joint is equipped with at this place, air outlet; One of said joint and adsorption tube is connected, and the import of the other end of adsorption tube and charcoal jar is joined, and the outlet of charcoal jar is connected with Carburetor through desorption pipe.
The present invention utilizes the air pressure balance passage on the existing fuel tank cap dexterously; The air outlet of air pressure balance passage is communicated with the import of charcoal jar through pipeline; Form current path between fuel tank inner chamber, air pressure balance passage, adsorption tube, charcoal jar, desorption pipe and the Carburetor like this; On the one hand can the inside and outside pressure of trim tank, guarantee fuel tank through fuel tank switch to the Carburetor normal fuel injection; On the other hand, the oil vapor in the fuel tank gets into the air pressure balance passage, gets into the charcoal jar through the pipeline between air pressure balance passage air outlet and the charcoal jar, gets in the Carburetor after being absorbed by the charcoal jar and utilizes.When motorcycle was normally exercised, the anti-roll valve that carries in the air pressure balance passage let gas freely pass through, and plays the effect of equilibrium air pressure; When motorcycle tilts or falls down; Anti-roll valve has been sealed air flue; Not only stoped fuel oil to get into Carburetor through fuel tap; And can prevent that fuel oil from flowing out from the air pressure balance passage, thus avoided the pipeline blockage before the charcoal jar, guaranteed the reliable performance of trim tank external and internal pressure and adsorbed oil steam.Simultaneously, carry anti-roll valve in the air pressure balance passage, the anti-roll valve of needn't in the pipeline before the charcoal jar, connecting had in addition both been simplified pipeline, helped line arrangement, effectively reduced cost of production again.
Between the inner roof wall of the flange at said fuel tank cap lower casing top and fuel tank cap upper casing, be provided with sealing rubber ring; To avoid the oil vapor in the air pressure balance passage to get into the small gaps between fuel tank cap lower casing " ∩ " shape flange and all sidewalls of fuel tank cap upper casing, effectively prevented the oil vapor escape.
In order further to strengthen sealing effect, the end face of said flange is the plane, fits in the bottom surface of this plane and sealing rubber ring, and the inner roof wall of the end face of sealing rubber ring and fuel tank cap upper casing is fitted.
In order to simplify the internal structure of an organization, be convenient to assembling; And help the pipeline connection, and said joint is a right angle type, being linked to each other with crosspiece by perpendicular section forms; The lower end of the perpendicular section of this joint is stretched in the air outlet of fuel tank cap upper casing center of top, passes through arc transition between the upper end of the perpendicular section of joint and the crosspiece.
Central authorities at said fuel tank cap upper casing inner roof wall are welded with lining; The below of this lining is provided with cubic bolt, and the upper end of said cubic bolt is stretched in the lining, and is threaded with the lower end of the perpendicular section of joint; And the center hole of cubic bolt communicates with the endoporus of joint; Upper end in the perpendicular section of joint has annular groove, in this annular groove shaft block ring is installed, and said shaft block ring is positioned at the top of fuel tank cap upper casing.In the above structure, cubic bolt plays ventilation through its center hole on the one hand, on the other hand; The four directions bolt cooperates with shaft block ring, plays position-limiting action, prevents the relative fuel tank cap upper casing of joint play up and down, to guarantee the reliability in joint installation and the using process.Simultaneously, joint and fuel tank cap upper casing Spielpassung, joint can rotate in a circumferential direction; The assembly direction of joint can be adjusted according to the position and the mounting structure of different automobile types fuel tank like this; The state of having unified fuel tank cap, highly versatile not only, and reduced the production management difficulty.
In order to strengthen sealing, between said lining and joint, be provided with the O RunddichtringO.
The invention has the beneficial effects as follows:
1, rationally utilize the structure of existing fuel tank cap, needn't be equipped with accessories such as special anti-roll valve and anchor ear again, effectively reduce the cost of production of motorcycle, the cost of every motorcycle can reduce by five yuan at least.
2, only need fuel tank cap is done change a little, needn't change Oiltank structure, reforming cost is low, and highly versatile all can use on the motorcycle of various different automobile types.
3, can effectively prevent pipeline blockage, the reliable performance of adsorbed oil steam not only, and can guarantee that fuel tank passes through fuel tap to the Carburetor normal fuel injection.
4, fuel tank cap good seal can not cause the oil vapor escape, has avoided the waste of environmental pollution and fuel oil, has satisfied the requirement of state III standard.
Description of drawings
Fig. 1 is embodiment 1 a structural representation.
Fig. 2 is the structural representation of fuel tank cap among the embodiment 1.
Fig. 3 is that the B of Fig. 2 is to view.
Fig. 4 is embodiment 2 a structural representation.
The structural representation of Fig. 5 background technique 1.
Fig. 6 is the structural representation of background technique 2.
Fig. 7 is the structural representation of fuel tank cap among Fig. 6.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further:
Embodiment 1
Like Fig. 1, Fig. 2, shown in Figure 3; The present invention is made up of fuel tank 1, fuel tank cap, adsorption tube 5, charcoal jar 6, desorption pipe 7, Carburetor 8, joint 11 and sealing rubber ring 12; Wherein fuel tank cap is installed in the oil filler at fuel tank 1 top, and this fuel tank cap carries air pressure balance passage 9.Said fuel tank cap is made up of fuel tank cap upper casing 2, internal component 3 and fuel tank cap lower casing 4 three parts; Internal component 3 is installed in the fuel tank cap lower casing 4; The bottom of fuel tank cap lower casing 4 has the suction port 10 of air pressure balance passage 9, and near suction port 10 places anti-roll valve 13 is housed in the air pressure balance passage 9.The top of said fuel tank cap lower casing 4 has flange 4a, and the cross section of this flange 4a is flat-top " ∩ " shape.Fuel tank cap upper casing 2 spiral-locks are on the flange 4a at fuel tank cap lower casing 4 tops, and the applying of the external annulus of all sidewalls of fuel tank cap upper casing 2 and fuel tank cap lower casing 4 " ∩ " shape flange 4a, and are spacing by the crimping of fuel tank cap upper casing 2 all sidewalls bottoms.
From Fig. 2, can know; Between the inner roof wall of the flange 4a at fuel tank cap lower casing 4 tops and fuel tank cap upper casing 2, be provided with sealing rubber ring 12; The inner roof wall of the end face of sealing rubber ring 12 and fuel tank cap upper casing 2 is fitted, and fits in the plane on the bottom surface of sealing rubber ring 12 and flange 4a top.Sealing rubber ring 12 plays sealing, prevents to leak gas between fuel tank cap lower casing 4 flange 4a and the fuel tank cap upper casing 2 all sidewalls.
Can know that from Fig. 1, Fig. 2 the air outlet of air pressure balance passage 9 is arranged at the central authorities of fuel tank cap upper casing 2 roofs, joint 11 is equipped with at this place, air outlet.Except that the air outlet, the set-up mode of air pressure balance passage 9 is identical with background technique 2, does not do at this and gives unnecessary details.Said joint 11 is a right angle type, and being linked to each other with crosspiece by perpendicular section forms, and the lower end of these joint 11 perpendicular sections is stretched in the air outlet at fuel tank cap upper casing 2 tops, and the endoporus of joint 11 is communicated with air pressure balance passage 9.The outer wall of joint 11 perpendicular section lower ends welds with fuel tank cap upper casing 2 mutually; The upper end of joint 11 perpendicular sections and an end of crosspiece pass through arc transition; One of the other end of joint 11 crosspieces and adsorption tube 5 is connected; The import of the other end of adsorption tube 5 and charcoal jar 6 is joined, and the outlet of charcoal jar 6 is connected with Carburetor 8 through desorption pipe 7.For preventing that the fuel oil in the Carburetor 8 from flowing backwards in charcoal jar 6, charcoal jar 6 itself is provided with an one-way valve, in charcoal jar 6, is not provided with under the situation of one-way valve, and the one-way valve of between charcoal jar 6 and Carburetor 8, connecting gets final product.
The working principle of present embodiment is following:
Form current path between fuel tank 1 inner chamber, air pressure balance passage 9, joint 11, adsorption tube 5, charcoal jar 6, desorption pipe 7 and the Carburetor 8; Carry air inlet on the charcoal jar 6; On the one hand can the inside and outside pressure of trim tank through the path between fuel tank 1 inner chamber, air pressure balance passage 9, adsorption tube 5 and the charcoal jar 6, guarantee that fuel tank passes through fuel tank switch to the Carburetor normal fuel injection; On the other hand; Under the effect of the anti-roll valve 13 that in air pressure balance passage 9, carries; The oil vapor of volatilization can get into air pressure balance passage 9 in the fuel tank 1, even and liquid fuel can not flow out from air pressure balance passage 9 when motorcycle tilts or falls down, oil vapor passes through air pressure balance passage 9, adsorption tube 5 and charcoal jar 6 successively like this; After absorbing by charcoal jar 6 at last, get into utilization in the Carburetor 8 through desorption pipe 7.
Like Fig. 4 and combine Fig. 1, shown in Figure 3, be welded with lining 17 in the central authorities of fuel tank cap upper casing 2 inner roof walls.Said joint 11 is a right angle type, and being linked to each other with crosspiece by perpendicular section forms, and the air outlet at fuel tank cap upper casing 2 tops is passed in the lower end that this joint 11 erects section, and stretches in the lining 17, and Spielpassung between perpendicular section of joint 11 and the fuel tank cap upper casing 2.Below lining 17, be provided with cubic bolt 18; The step surface at these four directions bolt 18 middle parts is near the bottom surface of lining 17; The upper end of four directions bolt 18 is stretched in the lining 17, and is threaded with the lower end of joint 11 perpendicular sections, and is provided with O RunddichtringO 20 between lining 17 and the joint 11.The center hole of said cubic bolt 18 communicates with the endoporus of joint 11, has annular groove in the upper end of the perpendicular section of joint 11, and shaft block ring 19 is installed in this annular groove, and said shaft block ring 19 is positioned at the top of fuel tank cap upper casing 2, and near the middle part of fuel tank cap upper casing 2 roofs.Shaft block ring 19 cooperates with cubic bolt 18, plays position-limiting action, prevents joint 11 relative fuel tank cap upper casings play about in the of 2.All the other structures of present embodiment are identical with embodiment 1, do not do at this and give unnecessary details.
In the present embodiment, form current path between fuel tank 1 inner chamber, air pressure balance passage 9, cubic bolt 18, joint 11, adsorption tube 5, charcoal jar 6, desorption pipe 7 and the Carburetor 8, the working principle of present embodiment is identical with embodiment 1, does not also do at this and gives unnecessary details.
Claims (4)
1. adsorber of fuel vapor of motorcycles; Comprise fuel tank (1), fuel tank cap, adsorption tube (5), charcoal jar (6), desorption pipe (7) and Carburetor (8); The fuel tank cap of band air pressure balance passage (9) is installed in the oil filler at fuel tank (1) top, and this fuel tank cap has fuel tank cap upper casing (2), internal component (3) and fuel tank cap lower casing (4), and said internal component (3) is contained in the fuel tank cap lower casing (4); The bottom of fuel tank cap lower casing (4) has the suction port (10) of air pressure balance passage (9); The top of fuel tank cap lower casing (4) has the flange (4a) of cross section for " ∩ " shape, and said fuel tank cap upper casing (2) spiral-lock is characterized in that on the flange (4a) at fuel tank cap lower casing (4) top: the air outlet of said air pressure balance passage (9) is arranged on the roof of fuel tank cap upper casing (2); Joint (11) is equipped with at this place, air outlet; One of said joint (11) and adsorption tube (5) is connected, and the import of the other end of adsorption tube (5) and charcoal jar (6) is joined, and the outlet of charcoal jar (6) is connected with Carburetor (8) through desorption pipe (7); Said joint (11) is a right angle type, and being linked to each other with crosspiece by perpendicular section forms, and the lower end of the perpendicular section of this joint (11) is stretched in the air outlet of fuel tank cap upper casing (2) center of top, passes through arc transition between the upper end of the perpendicular section of joint (11) and the crosspiece; Central authorities at said fuel tank cap upper casing (2) inner roof wall are welded with lining (17); The below of this lining (17) is provided with cubic bolt (18), and the upper end of said cubic bolt (18) is stretched in the lining (17), and is threaded with the lower end of the perpendicular section of joint (11); And the center hole of cubic bolt (18) communicates with the endoporus of joint (11); Upper end in the perpendicular section of joint (11) has annular groove, and shaft block ring (19) is installed in this annular groove, and said shaft block ring (19) is positioned at the top of fuel tank cap upper casing (2).
2. adsorber of fuel vapor of motorcycles according to claim 1 is characterized in that: between the inner roof wall of the flange (4a) at said fuel tank cap lower casing (4) top and fuel tank cap upper casing (2), be provided with sealing rubber ring (12).
3. adsorber of fuel vapor of motorcycles according to claim 2; It is characterized in that: the end face of said flange (4a) is the plane; Fit in the bottom surface of this plane and sealing rubber ring (12), the inner roof wall of the end face of sealing rubber ring (12) and fuel tank cap upper casing (2) is fitted.
4. adsorber of fuel vapor of motorcycles according to claim 1 is characterized in that: between said lining (17) and joint (11), be provided with O RunddichtringO (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102154504A CN101886590B (en) | 2010-07-01 | 2010-07-01 | Adsorber of fuel vapor of motorcycles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102154504A CN101886590B (en) | 2010-07-01 | 2010-07-01 | Adsorber of fuel vapor of motorcycles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101886590A CN101886590A (en) | 2010-11-17 |
| CN101886590B true CN101886590B (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2010102154504A Expired - Fee Related CN101886590B (en) | 2010-07-01 | 2010-07-01 | Adsorber of fuel vapor of motorcycles |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2474722C1 (en) * | 2012-01-26 | 2013-02-10 | Общество с ограниченной ответственностью "Детальстройконструкция" | Adsorber of fuel vapours recovery system |
| KR101755895B1 (en) * | 2015-11-24 | 2017-07-07 | 현대자동차주식회사 | Fuel auxiliary tank for flexible fuel vehicle |
| CN107061083A (en) * | 2017-05-25 | 2017-08-18 | 隆鑫通用动力股份有限公司 | Engine oil case lid and general purpose engine |
| US20190048831A1 (en) * | 2017-08-10 | 2019-02-14 | GM Global Technology Operations LLC | Fresh air path hydrocarbon trap system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255830A (en) * | 2007-02-27 | 2008-09-03 | 三菱重工业株式会社 | Multipurpose engine equipped with a canister |
| CN201288621Y (en) * | 2008-10-23 | 2009-08-12 | 邵志强 | Fuel oil evaporation desorption control apparatus |
| CN201771635U (en) * | 2010-07-01 | 2011-03-23 | 力帆实业(集团)股份有限公司 | Vapor adsorption system in motor bicycle oil tank |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7104258B2 (en) * | 2003-12-04 | 2006-09-12 | Honda Motor Co., Ltd. | General-purpose engine |
| JP2007255386A (en) * | 2006-03-24 | 2007-10-04 | Fuji Heavy Ind Ltd | Fuel evaporation prevention structure of fuel tank cap |
-
2010
- 2010-07-01 CN CN2010102154504A patent/CN101886590B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255830A (en) * | 2007-02-27 | 2008-09-03 | 三菱重工业株式会社 | Multipurpose engine equipped with a canister |
| CN201288621Y (en) * | 2008-10-23 | 2009-08-12 | 邵志强 | Fuel oil evaporation desorption control apparatus |
| CN201771635U (en) * | 2010-07-01 | 2011-03-23 | 力帆实业(集团)股份有限公司 | Vapor adsorption system in motor bicycle oil tank |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2007-255386A 2007.10.04 |
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| CN101886590A (en) | 2010-11-17 |
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