CN105275676B - A kind of fuel-steam two-way valve - Google Patents
A kind of fuel-steam two-way valve Download PDFInfo
- Publication number
- CN105275676B CN105275676B CN201510741330.0A CN201510741330A CN105275676B CN 105275676 B CN105275676 B CN 105275676B CN 201510741330 A CN201510741330 A CN 201510741330A CN 105275676 B CN105275676 B CN 105275676B
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- Prior art keywords
- valve body
- valve
- spring
- pressure
- bonnet
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- 230000000694 effects Effects 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 239000002828 fuel tank Substances 0.000 abstract description 17
- 239000000295 fuel oil Substances 0.000 abstract description 9
- 239000000446 fuel Substances 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 3
- 239000013589 supplement Substances 0.000 abstract description 3
- YBGRCYCEEDOTDH-JYNQXTMKSA-N evap protocol Chemical compound O=C1C=C[C@]2(C)[C@H]3[C@@H](O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1.O([C@H]1C[C@@](O)(CC=2C(O)=C3C(=O)C=4C=CC=C(C=4C(=O)C3=C(O)C=21)OC)C(=O)CO)[C@H]1C[C@H](N)[C@H](O)[C@H](C)O1.COC1=C(O)C(OC)=CC([C@@H]2C3=CC=4OCOC=4C=C3C(O[C@H]3[C@@H]([C@@H](O)[C@@H]4O[C@H](C)OC[C@H]4O3)O)[C@@H]3[C@@H]2C(OC3)=O)=C1.C([C@H](C[C@]1(C(=O)OC)C=2C(=C3C([C@]45[C@H]([C@@]([C@H](OC(C)=O)[C@]6(CC)C=CCN([C@H]56)CC4)(O)C(=O)OC)N3C)=CC=2)OC)C[C@@](C2)(O)CC)N2CCC2=C1NC1=CC=CC=C21 YBGRCYCEEDOTDH-JYNQXTMKSA-N 0.000 abstract 1
- 239000003570 air Substances 0.000 description 6
- 239000003502 gasoline Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 big valve body 1 Substances 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Safety Valves (AREA)
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
Abstract
The invention belongs to valve technology field and disclose a kind of fuel-steam two-way valve, including two-way valve body, the two-way valve body includes side a and b, the side a and b includes big valve body, core cap, bonnet, spring, valve element and valve body, the big body top is connected with core cap, is connected at the top of the core cap with bonnet, and spring is provided with inside the bonnet, the spring bottom is provided with valve element, and the valve element bottom is provided with valve body.The present invention is used to adsorb pipe assembly, this assembly is for transmitting the fuel-steam in fuel tank to canister, fuel oil enters canister when this two-way valve prevents fuel tank oiling excessive, the present invention is the strong supplement to EVAP system, the economy for improving fuel oil avoids more fuel steam discharges to air simultaneously, the effect of environmental protection is played, by by, by being welded to connect, sealing is effectively guaranteed between big valve body, core cap, bonnet, spring, valve element and valve body.
Description
Technical field
The present invention relates to a kind of two-way valve, and in particular to a kind of fuel-steam two-way valve, belongs to valve technology field.
Background technology
Fuel steam discharge control system (EVAP) is equipped with automobile at present, fairly simple fuel oil common at present
Evaporation control system (mainly controls magnetic valve and various automobile pipeline assemblies (desorption pipe) etc. by fuel tank, charcoal canister, canister
Composition.Fuel evaporation control system (EVAP) can store fuel vapor caused by fuel system (HC), prevent fuel vapor from letting out
Reveal in air, while the fuel vapor of collection is in time sent into inlet manifold, enter after being mixed with normal gaseous mixture and start
Machine burns, and fuel oil is fully used.The fuel-steam that absorption pipe assembly is used to transmit in fuel tank is logical with two to canister
Valve, fuel oil enters canister when preventing fuel tank oiling excessive.Two-way valve is also pressure retaining valve and absorption and control valve, a logical fuel tank,
One logical canister.When engine does not work, ambient air temperature rise, the interior gasoline vapor that produces of fuel tank forms malleation, and gasoline vapor leads to
Cross this valve and enter canister, by active carbon adsorption；When ambient air temperature declines formation negative pressure in gasoline vapor condensation fuel tank, air passes through
Canister and this valve enter fuel tank, oil dropping apparatus tonifying Qi.This valve is more crucial.If this valve is obstructed during fuel tank negative pressure, engine work
When will occur fuel tank inhale the flat or blow out of an engine.If during fuel tank malleation, this valve opening pressure is excessive, such as larger than 3,63KPA, then
When oil supply system does venting capability detection, the requirement of China's regulation will not reached.That is after 3,63KPA of inflation pressure, canister is opened
Atmospheric air port, within 2MIN, pressure drop is less than 0, below 98KPA.It is relatively low that Volkswagen's two-way valve malleation opens pressure,
Only 0.3Kpa.When malleation reaches 1Kpa, throughput is 7 to 16L/MLN, meets China's laws and regulations requirement.U.S., Japanese automobile company are double
It is higher that port valve malleation opens pressure, and Japanese valve opens pressure general 2.94 to 3.92Kpa, even more high, throughput during 4.0Kpa
Below 1L/MLN.More than U.S. bilateral valve opening pressure 7.0Kpa.America and Japan's two-way valve can not meet that China's automobile oil supply system is led to
The laws and regulations requirement of gas performance.Another important function of this valve is that engine makes engine air inlet tube lead to fuel tank when working
Tracheae is cut-off state.
The content of the invention
The technical problem to be solved in the present invention overcomes the defects of existing, there is provided a kind of fuel-steam two-way valve, for adsorbing
Pipe assembly, the fuel-steam that this assembly is used to transmit in fuel tank is to canister, fuel oil when this two-way valve prevents fuel tank oiling excessive
Into canister, the present invention is the strong supplement to EVAP system, improves the economy of fuel oil while avoids more fuel-steams from arranging
Air is put into, plays the effect of environmental protection, by the way that the company of welding will be passed through between big valve body, core cap, bonnet, spring, valve element and valve body
Connect, sealing is effectively guaranteed, and effectively can solve the problems, such as in background technology.
In order to solve the above-mentioned technical problem, the invention provides following technical scheme：
The present invention provides a kind of fuel-steam two-way valve, including two-way valve body, the two-way valve body include A ends and B
End, the side a and b include big valve body, core cap, bonnet, spring, valve element and valve body, and the big body top is connected with core cap,
It is connected at the top of the core cap with bonnet, is provided with spring inside the bonnet, the spring bottom is provided with valve element, the valve element bottom
Provided with valve body.
As a preferred technical solution of the present invention, the two-way valve body is made up of plastic material.
As a preferred technical solution of the present invention, between the big valve body, core cap, bonnet, spring, valve element and valve body
By being welded to connect.
As a preferred technical solution of the present invention, the side a and b is two-way can allow air-flow by and A ends and B
Hold both ends pressure difference different flow different.
The beneficial effect that is reached of the present invention is：A kind of fuel-steam two-way valve, for adsorbing pipe assembly, this assembly is used for
The fuel-steam in fuel tank is transmitted to canister, fuel oil enters canister when this two-way valve prevents fuel tank oiling excessive, and the present invention is
To the strong supplement of EVAP system, improve the economy of fuel oil while avoid more fuel steam discharges from playing environmental protection to air
Effect, by by, by being welded to connect, sealing obtains effectively between big valve body, core cap, bonnet, spring, valve element and valve body
Guarantee.
Brief description of the drawings
Accompanying drawing is used for providing a further understanding of the present invention, and a part for constitution instruction, the reality with the present invention
Apply example to be used to explain the present invention together, be not construed as limiting the invention.
In the accompanying drawings：
Fig. 1 is a kind of fuel-steam two-way valve overall structure diagram described in the embodiment of the present invention；
Fig. 2 is a kind of fuel-steam two-way valve side a and b schematic diagram described in the embodiment of the present invention；
Label in figure：1st, big valve body；2nd, core cap；3rd, bonnet；4th, spring；5th, valve element；6th, valve body；7th, B ends；8th, A ends；9th, two
Port valve body.
Embodiment
The preferred embodiments of the present invention are illustrated below in conjunction with accompanying drawing, it will be appreciated that described herein preferred real
Apply example to be merely to illustrate and explain the present invention, be not intended to limit the present invention.
Embodiment：Fig. 1-2, a kind of fuel-steam two-way valve of the present invention, including two-way valve body 9, its feature is referred to exist
Include A ends 8 and B ends 7 in, the two-way valve body 9, the A ends 8 and B ends 7 include big valve body 1, core cap 2, bonnet 3, spring 4,
Valve element 5 and valve body 6, the big top of valve body 1 are connected with core cap 2, and the top of core cap 2 is connected with bonnet 3, in the bonnet 3
Portion is provided with spring 4, and the bottom of spring 4 is provided with valve element 5, and the bottom of valve element 5 is provided with valve body 6.
The two-way valve body 9 is made up of plastic material, big valve body 1, core cap 2, bonnet 3, spring 4, valve element 5 and the valve
By being welded to connect between body 6, the A ends 8 and B ends 7 be two-way can allow air-flow by and A ends 8 and the both ends pressure difference of B ends 7 not
It is different with flow, by, by being welded to connect, will be sealed between big valve body 1, core cap 2, bonnet 3, spring 4, valve element 5 and valve body 6
Property is effectively guaranteed.
It should be noted that the present invention is a kind of fuel-steam two-way valve, during work, when the pressure and the pressure at B ends at A ends
Difference is in below 5kpa, and because two-way valve inner spring is compressed, valve body its sphere under the elastic force effect of spring is bored with big valve body
Face is in close contact, while in the presence of pressure difference, valve element is withstood on core cap.Now air-flow can only be passed through by the endoporus of valve element.
When the pressure at A ends and B pressure difference are 8kpa, the gas pressure that valve body is subject to is exactly equal to the holding power of spring offer, now
Valve body and big valve body directly generate gap, while valve body directly has with bonnet and preserves certain gap, and now air-flow can be from
Mutual gap is by the way that while the aperture of valve element can also allow gas to pass through.When the pressure at A ends and B pressure difference are 30kpa,
The gas pressure that valve body is subject to is more than the holding power that spring provides, and now valve body directly generates gap with big valve body, in pressure
In the presence of valve body contacted with bonnet, now air-flow can only pass through from the aperture of valve element.When A ends pressure and B pressure difference for-
During 0.98kpa, two-way valve inner spring is compressed, and valve body its sphere under the elastic force effect of spring closely connects with the big valve body conical surface
Touch, but valve element disengages under the pressure effect at B ends with core cap, and now air-flow can be by between core cap, valve element and valve body
Gap passes through.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention,
Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., it should be included in the present invention's
Within protection domain.
Claims (3)
1. a kind of fuel-steam two-way valve, including two-way valve body, it is characterised in that the two-way valve body includes A ends and B
End, the side a and b include big valve body, core cap, bonnet, spring, valve element and valve body, and the big body top is connected with core cap,
It is connected at the top of the core cap with bonnet, is provided with spring inside the bonnet, the spring bottom is provided with valve element, the valve element bottom
Provided with valve body；The side a and b is two-way can allow air-flow by and side a and b both ends pressure difference different flow it is different；
When the pressure at A ends and the pressure differential at B ends are in below 5kpa, two-way valve inner spring is compressed, elastic force of the valve body in spring
Its lower sphere of effect is in close contact with the big valve body conical surface, while in the presence of pressure difference, valve element is withstood on core cap, now air-flow
It can be passed through by the endoporus of valve element；
When the pressure at A ends and B pressure difference are 8kpa, the gas pressure that valve body is subject to is exactly equal to the holding power of spring offer,
Now valve body and big valve body directly produce gap, while valve body directly has with bonnet and preserves certain gap, and now air-flow can be with
From mutual gap by the way that while the aperture of valve element can also allow gas to pass through；
When the pressure at A ends and B pressure difference are 30kpa, the gas pressure that valve body is subject to is more than the holding power that spring provides, now
Valve body directly generates gap with big valve body, and valve body contacts with bonnet under the effect of the pressure, and now air-flow can only be from valve element
Aperture passes through；
When the pressure at A ends and B pressure difference are -0.98kpa, two-way valve inner spring is compressed, and valve body acts in the elastic force of spring
Its lower sphere is in close contact with the big valve body conical surface, but valve element disengages under the pressure effect at B ends with core cap, and now air-flow can lead to
The gap crossed between core cap, valve element and valve body passes through.
2. a kind of fuel-steam two-way valve according to claim 1, it is characterised in that the two-way valve body is by plastics material
Matter is made.
A kind of 3. fuel-steam two-way valve according to claim 1, it is characterised in that the big valve body, core cap, bonnet,
By being welded to connect between spring, valve element and valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510741330.0A CN105275676B (en) | 2015-11-04 | 2015-11-04 | A kind of fuel-steam two-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510741330.0A CN105275676B (en) | 2015-11-04 | 2015-11-04 | A kind of fuel-steam two-way valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105275676A CN105275676A (en) | 2016-01-27 |
| CN105275676B true CN105275676B (en) | 2018-03-16 |
Family
ID=55145322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510741330.0A Active CN105275676B (en) | 2015-11-04 | 2015-11-04 | A kind of fuel-steam two-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105275676B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1146790A (en) * | 1995-05-05 | 1997-04-02 | 罗伯特·博施有限公司 | Volatile fuel quantitative introduction valve |
| EP1891360A1 (en) * | 2005-06-16 | 2008-02-27 | Raval A.C.S. LTD | Double check valve for a fuel system |
| CN201980076U (en) * | 2010-07-29 | 2011-09-21 | 天津市格林利福新技术有限公司 | Bidirectional valve for flow control |
| CN204553966U (en) * | 2015-04-14 | 2015-08-12 | 重庆溯联汽车零部件有限公司 | Twoway valves |
| CN205135859U (en) * | 2015-11-04 | 2016-04-06 | 河北亚大汽车塑料制品有限公司 | Fuel steam two -way valve |
-
2015
- 2015-11-04 CN CN201510741330.0A patent/CN105275676B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1146790A (en) * | 1995-05-05 | 1997-04-02 | 罗伯特·博施有限公司 | Volatile fuel quantitative introduction valve |
| EP1891360A1 (en) * | 2005-06-16 | 2008-02-27 | Raval A.C.S. LTD | Double check valve for a fuel system |
| CN201980076U (en) * | 2010-07-29 | 2011-09-21 | 天津市格林利福新技术有限公司 | Bidirectional valve for flow control |
| CN204553966U (en) * | 2015-04-14 | 2015-08-12 | 重庆溯联汽车零部件有限公司 | Twoway valves |
| CN205135859U (en) * | 2015-11-04 | 2016-04-06 | 河北亚大汽车塑料制品有限公司 | Fuel steam two -way valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105275676A (en) | 2016-01-27 |
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