CN207278895U - The high pressure resistant fuel tank isolation valve of car of new model - Google Patents
The high pressure resistant fuel tank isolation valve of car of new model Download PDFInfo
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- CN207278895U CN207278895U CN201721350415.7U CN201721350415U CN207278895U CN 207278895 U CN207278895 U CN 207278895U CN 201721350415 U CN201721350415 U CN 201721350415U CN 207278895 U CN207278895 U CN 207278895U
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- isolation valve
- high pressure
- valve
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Abstract
It the utility model is related to a kind of high pressure resistant fuel tank isolation valve of car of new model, it is characterized in that, the fuel tank isolation valve includes isolation valve body, spring assembly, core assembly, supporting rod, restrictor ring, sealing ring and solenoid valve, the spring assembly, core assembly, restrictor ring, supporting rod, sealing ring are arranged in isolation valve body, and solenoid valve is arranged on the end of isolation valve body.The technical solution simple and ingenious structure, realizes high pressure gas, negative pressure tonifying Qi, the complicated function such as exhaust of refueling using the less part such as plastic part, spring, solenoid valve and rubber parts；The requirement of different customers can be met by the diameter and spring sizes of adjustment hole；Such a structure isolating valve only uses a solenoid valve, has saved electric energy；Such a structure isolating valve is small, is not take up chassis space.
Description
Technical field
It the utility model is related to a kind of isolating valve, and in particular to a kind of high pressure resistant fuel tank isolation valve of car of new model, belongs to modeling
Expect fuel tank structure equipment technical field.
Background technology
Hydrocarbon molecules constantly enter canister after gasoline volatilization in fuel tank, and by the activated carbon adsorption in canister, if
Conventional vehicle, during running car, the hydrocarbon molecules in canister are just desorbed into engine combustion by the negative pressure that engine is formed, without
Make hydrocarbon molecules cumulative in canister, and produce and overflow the external world from canister atmospheric air port, pollute the risk of environment.If
" plug-in oil electricity hybrid vehicle ", if engine does not work for a long time, then the canister of fuel system just cannot get engine
Desorption, the hydrocarbon molecules after gasoline volatilization just constantly enter canister, after the activated carbon in canister is to hydrocarbon molecules adsorption saturation, just
Extraneous, pollution environment can be overflowed from canister atmospheric air port；To avoid this risk, it is necessary to increase " fuel tank between fuel tank and canister
Isolating valve ", its major function are：When automobile is travelled or stopped using battery-driven motor, " fuel tank isolation valve " is usual
In sealing closed mode, the hydrocarbon molecules in fuel tank are prevented to enter canister, but since fuel tank is sealed, fuel tank can not
Exhaust, when tank temperature rise or fuel oil acutely rock, the pressure in fuel tank just raises, when tank internal pressure is excessive（About
During 35kPa）, high pressure has exceeded the tolerance range of fuel tank, is security consideration, and setting " fuel tank isolation valve " is just beaten at this pressure
Begin to rehearse gas, and when fuel tank is cooled to about -15kPa, low-pressure has exceeded the tolerance range of fuel tank, is security consideration, setting " oil
Case isolating valve " just opens exhaust at this pressure；Exhausted in automobile battery power, when being worked using engine, " fuel tank is isolated
Valve " opens exhaust；When automobile fuel filler, " fuel tank isolation valve " is opened, and is made smoothly to be vented from canister during oiling, is met to refuel smooth
Property；Another technical background, exactly when " fuel tank isolation valve " reaches about 35kPa and open in tank pressure, high stream in fuel tank
The hydrocarbon vapor of amount needs to discharge from valve " FLVV ", about 200 liters/min, and " FLVV " is machinery valve, the production of excessive flow
Raw suction, the spool float of FLVV can be pushed up and close FLVV, cause fuel tank can not continue to be vented, " fuel tank every
From valve " to avoid this problem.
The content of the invention
The utility model is exactly to be directed to technical problem existing in the prior art, there is provided a kind of high pressure resistant fuel tank of car of new model
Isolating valve, the technical solution overall construction design is ingenious compact, meets the needs of " plug-in oil electricity hybrid vehicle " fuel system.
To achieve these goals, the technical solution of the utility model is as follows, a kind of high pressure resistant fuel tank isolation of car of new model
Valve, it is characterised in that the fuel tank isolation valve includes isolation valve body, spring assembly, core assembly, supporting rod, restrictor ring, close
Seal and solenoid valve, the spring assembly, core assembly, restrictor ring, supporting rod, sealing ring are arranged at isolation valve body
Interior, solenoid valve is arranged on the end of isolation valve body.
One kind as the utility model is improved, and the spring assembly includes the first spring, second spring and the 3rd bullet
Spring, first spring are arranged on supporting rod, and the second spring is arranged between supporting rod and the first sealed valve core, described
3rd spring is arranged in isolation valve body.
One kind as the utility model is improved, and the core assembly includes the first sealed valve core and the second sealed valve core,
It is welded and fixed together between first sealed valve core and supporting rod by contact surface, second sealed valve core passes through support
Bar and second spring are positioned.
One kind as the utility model is improved, and second sealed valve core is arranged to pyramidal structure, which has
After helping positive pressure opening exhaust, the second sealed valve core recovers centering positioning during sealing state.
One kind as the utility model is improved, and is provided with venthole on the supporting rod, which is used for isolating valve
Positive pressure opens exhaust passage during exhaust.
One kind as the utility model is improved, and is provided with cylindrical boss on first sealed valve core, and described second
Spring is positioned by cylindrical boss.By the cylinder boss on the first sealed valve core, it ensure that second spring is being assembled
Centering when being vented with the second sealed valve core is opened with positive pressure to position.
One kind as the utility model is improved, and the body interior is provided with body step.Body step is used for current limliting
The placement and positioning of ring.
One kind as the utility model is improved, and exhaust passage is provided with the restrictor ring.
Relative to the prior art, the utility model has the following advantages that, 1）It is compact overall structure, ingenious, effectively reduce carbon
Hydrogen compound discharges, environmental protection；Reduce the fuel consumption during automobile use；Ensure fuel oil quality, prevent fuel oil weathering；
2）The technical solution simple and ingenious structure, high pressure is realized using the less part such as plastic part, spring, solenoid valve and rubber parts
Exhaust, negative pressure tonifying Qi, the complicated function such as exhaust of refueling；Different Gus can be met by the diameter and spring sizes of adjustment hole
The requirement of visitor；Such a structure isolating valve only uses a solenoid valve, has saved electric energy；Such a structure isolating valve is small, does not account for
With chassis space；3）The second sealed valve core is arranged to pyramidal structure in the program, which contributes to positive pressure to open exhaust
Afterwards, centering when the second sealed valve core recovers sealing state positions；Venthole is provided with the supporting rod, which is used for
Isolating valve positive pressure opens exhaust passage during exhaust；4）Cylindrical boss is provided with the first sealed valve core in the program, it is described
Second spring is positioned by cylindrical boss.By the cylinder boss on the first sealed valve core, it ensure that second spring exists
Centering when assembling and positive pressure open exhaust with the second sealed valve core positions；5）The program further increases the safety of fuel tank
Property, reduce hydrocarbon emission during plug-in oil electricity hybrid vehicle use, alleviate the load of canister, meet to refuel
Smoothness.
Brief description of the drawings
Fig. 1 is the utility model overall structure diagram；
Fig. 2 is Fig. 1 sectional views；
Fig. 3 is core assembly, spring assembly assembling structure schematic diagram；
Fig. 4-Fig. 8 is course of work view；
Fig. 9 blocks restrictor ring exhaust passage view for body step part；
In figure：1st, insert body, 2, spring assembly, 3, core assembly, 4, supporting rod, 5, restrictor ring, 6, sealing ring, 7, electricity
Magnet valve, the 21, first spring, 22, second spring, the 23, the 3rd spring, the 31, first sealed valve core, the 32, second sealed valve core.8th, weld
Junction, 9, cylinder boss, 41, supporting rod venthole, 11, body step.
Embodiment：
In order to deepen the understanding and understanding to the utility model, this reality is further described with specific implementation below in conjunction with the accompanying drawings
With new.
Embodiment 1：Referring to Fig. 1, a kind of high pressure resistant fuel tank isolation valve of car of new model, the fuel tank isolation valve includes isolating valve
Body 1, spring assembly 2, core assembly 3, supporting rod 4, restrictor ring 5, sealing ring 6 and solenoid valve 7, the spring assembly, valve
Core assembly, restrictor ring, supporting rod, sealing ring are arranged in isolation valve body, and solenoid valve is arranged on the end of isolation valve body,
In the program, the spring assembly includes the first spring 21,22 and the 3rd spring 23 of second spring, and first spring is set
On supporting rod, the second spring is arranged between supporting rod and the first sealed valve core 31, the 3rd spring be arranged on every
From in valve body, the core assembly includes the first sealed valve core 31 and the second sealed valve core 32, first sealed valve core and
It is welded and fixed together between supporting rod by contact surface, second sealed valve core is determined by supporting rod and second spring
Position, second sealed valve core is arranged to pyramidal structure, is provided with venthole on the supporting rod, on first sealed valve core
Cylindrical boss is provided with, the second spring is positioned by cylindrical boss, and the body interior is provided with this object table
Rank, is provided with exhaust passage on the restrictor ring.Referring to Fig. 3, pass through the weldering of contact surface 8 between sealed valve core 31 and supporting rod 4
Connect and be fixed together.Fig. 3 dashed circles marked position is the first sealed valve core and the welding surface of supporting rod.Second spring 22 is located all the time
In compressive state, positioned by the cylinder boss 9 of the first sealed valve core 31.Second sealed valve core 32 passes through its cone structure
Positioned respectively with supporting rod 4 and second spring 22.Second sealed valve core 32 only opens exhaust in a high voltage state, remaining
Closed mode is under part.The venthole of supporting rod root circumferential direction constitutes the passage of high pressure gas, 22 basis of second spring
Pressure during high pressure gas, such as 35kPa designs.In the first sealed valve core 1 follows supporting rod reciprocating movement, Ke Yishi
The oiling exhaust of existing isolating valve and negative pressure gas compensation function.
Operation principle：A kind of high pressure resistant fuel tank isolation valve of car of new model, the isolating valve course of work is as follows,
Referring to Fig. 4, nature, solenoid valve is not powered on, and all springs are all in compressive state, due at this time " first
The elastic force that spring 21 " is set is more than " elastic force of the 3rd spring 23 ", valve, which is in, closes sealing state, tank port and canister end
Mouth is in isolation；
Referring to Fig. 5, high pressure open mode, solenoid valve is not powered on, and " second spring 22 " is by fuel tank internal high-pressure opening（About
35kPA）, tank port and canister port be in open mode, and the pressure in fuel tank can be discharged into the external world through canister；
Referring to Fig. 6, negative pressure open mode, solenoid valve is not powered on, and " the 3rd spring 23 " is opened by fuel tank internal negative pressure（About-
15kPA）, i.e., " elastic force and fuel tank negative pressure of the 3rd spring 23 " are more than " 21 " elastic force of the first spring, tank port and canister port
Negative pressure in open mode, fuel tank can be discharged through canister；
Referring to Fig. 7, Fig. 9, oiling open mode, solenoid valves, are subject to electromagnetic force, and the mechanism in whole " body " is outside
Stress moves, and solenoid valve is opened, and restrictor ring stress is closed, and " the first spring 21 ", " restrictor ring is " in fuel tank higher pressure at this time for compression
Under power, be still attached to " body " step 11 on, " restrictor ring " and on exhaust passage part blocked by the step of " body ", be vented
Amount is not very big, avoids FLVV and is closed due to being subject to big flow, hinders the risk of exhaust, at tank port and canister port
The external world can be discharged into the pressure in open mode, fuel tank through canister；
Referring to Fig. 8, when the pressure in fuel tank drops to certain value, " elastic force of the 3rd spring 23 " is more than tank pressure, will
" restrictor ring " releases step, and the whole exhaust passage of " restrictor ring " can be vented, and the pressure release of fuel tank be accelerated, simultaneously because oily
Case pressure, will not cause the closing of FLVV, and at this time, solenoid valve is opened, and restrictor ring is opened.
It should be noted that above-described embodiment, is not used for limiting the scope of protection of the utility model, in above-mentioned technical side
Made equivalents or replacement each fall within the scope that the utility model claims are protected on the basis of case.
Claims (8)
1. a kind of high pressure resistant fuel tank isolation valve of car of new model, it is characterised in that the fuel tank isolation valve includes isolation valve body, bullet
Spring component, core assembly, supporting rod, restrictor ring, sealing ring and solenoid valve, the spring assembly, core assembly, restrictor ring,
Supporting rod, sealing ring are arranged in isolation valve body, and solenoid valve is arranged on the end of isolation valve body.
2. the high pressure resistant fuel tank isolation valve of car of new model according to claim 1, it is characterised in that the spring assembly includes
First spring, second spring and the 3rd spring, first spring are arranged on supporting rod, and the second spring is arranged on branch
Between strut and the first sealed valve core, the 3rd spring is arranged in isolation valve body.
3. the high pressure resistant fuel tank isolation valve of car of new model according to claim 2, it is characterised in that the core assembly includes
First sealed valve core and the second sealed valve core, one is weldingly fixed between first sealed valve core and supporting rod by contact surface
Rise, second sealed valve core is positioned by supporting rod and second spring.
4. the high pressure resistant fuel tank isolation valve of car of new model according to claim 3, it is characterised in that second sealed valve core
It is arranged to pyramidal structure.
5. the high pressure resistant fuel tank isolation valve of car of new model according to claim 4, it is characterised in that set on the supporting rod
There is venthole.
6. the high pressure resistant fuel tank isolation valve of car of new model according to claim 5, it is characterised in that first sealed valve core
On be provided with cylindrical boss, the second spring is positioned by cylindrical boss.
7. the high pressure resistant fuel tank isolation valve of car of new model according to claim 6, it is characterised in that the body interior is set
There is body step.
8. the high pressure resistant fuel tank isolation valve of car of new model according to claim 7, it is characterised in that set on the restrictor ring
There is exhaust passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721350415.7U CN207278895U (en) | 2017-10-19 | 2017-10-19 | The high pressure resistant fuel tank isolation valve of car of new model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721350415.7U CN207278895U (en) | 2017-10-19 | 2017-10-19 | The high pressure resistant fuel tank isolation valve of car of new model |
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| CN207278895U true CN207278895U (en) | 2018-04-27 |
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| CN201721350415.7U Active CN207278895U (en) | 2017-10-19 | 2017-10-19 | The high pressure resistant fuel tank isolation valve of car of new model |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606179A (en) * | 2017-10-19 | 2018-01-19 | 亚普汽车部件股份有限公司 | The high pressure resistant fuel tank isolation valve of car of new model |
| CN109209685A (en) * | 2018-08-24 | 2019-01-15 | 亚普汽车部件股份有限公司 | A kind of new electronic control high-pressure fuel oil system |
| CN112267958A (en) * | 2020-11-14 | 2021-01-26 | 德安福(天津)汽车技术有限公司 | Fuel tank isolation valve and use method thereof |
-
2017
- 2017-10-19 CN CN201721350415.7U patent/CN207278895U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606179A (en) * | 2017-10-19 | 2018-01-19 | 亚普汽车部件股份有限公司 | The high pressure resistant fuel tank isolation valve of car of new model |
| CN107606179B (en) * | 2017-10-19 | 2024-05-31 | 亚普汽车部件股份有限公司 | Novel high-pressure resistant oil tank isolation valve for automobile |
| CN109209685A (en) * | 2018-08-24 | 2019-01-15 | 亚普汽车部件股份有限公司 | A kind of new electronic control high-pressure fuel oil system |
| CN112267958A (en) * | 2020-11-14 | 2021-01-26 | 德安福(天津)汽车技术有限公司 | Fuel tank isolation valve and use method thereof |
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