CN206797117U - The fuel system of low pressure or negative pressure - Google Patents
The fuel system of low pressure or negative pressure Download PDFInfo
- Publication number
- CN206797117U CN206797117U CN201720375480.9U CN201720375480U CN206797117U CN 206797117 U CN206797117 U CN 206797117U CN 201720375480 U CN201720375480 U CN 201720375480U CN 206797117 U CN206797117 U CN 206797117U
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- China
- Prior art keywords
- fuel tank
- drainer
- pipeline
- check valve
- fuel
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- 239000000446 fuel Substances 0.000 title claims abstract description 14
- 239000002828 fuel tank Substances 0.000 claims abstract description 70
- 238000009833 condensation Methods 0.000 claims abstract description 9
- 230000005494 condensation Effects 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 4
- 239000000295 fuel oil Substances 0.000 description 8
- 238000003466 welding Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
It the utility model is related to a kind of fuel system of low pressure or negative pressure, the fuel tank system includes fuel tank assembly, drainer, canister, vavuum pump, the first check valve, the second check valve and built-in column, it is provided with the first check valve on the fuel tank assembly to connect at the top of drainer by pipeline, and pipeline is passed in the middle part of drainer；It is connected at the top of the drainer by pipeline with canister；The condensation pot bottom is connected by pipeline with fuel tank assembly, and drainer bottom position is higher than at the top of fuel tank assembly；The vavuum pump is arranged on the pipeline between drainer and the first check valve；Second check valve is arranged between condensation pot bottom and fuel tank assembly on pipeline；The technical scheme effectively can control fuel tank internal pressure in low pressure or negative pressure state, whole system is simple in construction clear, reduce the deformation problems of fuel tank, so as to reduce the material of fuel tank, structure etc. requirement, effectively avoid fuel tank because of deformation and caused by performance failure and safety problem.
Description
Technical field
It the utility model is related to a kind of fuel system, and in particular to a kind of fuel system of low pressure or negative pressure, belong to plastics
Fuel tank structure equipment technical field.
Background technology
As the development and motor vehicle emission of new energy technology require progressively strict, the hybrid electric vehicle of in the market is gradual
Rise.Hybrid electric vehicle relies primarily on electrical energy drive, when power consumption totally or other in particular cases, fuel oil can be used
Driving engine is operated.Therefore, the hybrid power in-car fuel oil most of the time is in unused state, due to driving
During rock or the reasons such as temperature rises, the fuel oil in fuel tank can constantly volatilize, can be built in fuel tank in some cases
Erect higher pressure.The fuel tank internal pressure of orthodox car is typically between -2.5KPa ~ 3KPa, and hybrid power fuel oil
Pressure inside case then between -15KPa ~ 38KPa, now need to avoid fuel tank because of deformation and caused by performance failure and peace
Full problem.Hybrid power fuel tank compared with conventional fuel oil case, it is necessary to bear bigger pressure limit, therefore hybrid power fuel oil
Case has higher requirement for material, structure, causes to design and develop manufacturing cost increase.Therefore, urgent need one kind side
Case solves above-mentioned technical problem.
The content of the invention
The utility model is exactly for technical problem present in prior art, there is provided a kind of Fuel System of low pressure or negative pressure
System, the technical scheme overall construction design is ingenious compact, effectively can control fuel tank internal pressure in low pressure or negative pressure shape
State, whole system is simple in construction clear, reduces the deformation problems of fuel tank, so as to reduce the material of fuel tank, structure etc.
Manufacturing cost is designed and developed it is required that reducing, while for the deformation of negative pressure fuel tank, is stood proposing built in a kind of one end welding
Post, reduces the deformation problems of fuel tank, effectively avoid fuel tank because of deformation and caused by performance failure and safety problem.
To achieve these goals, the technical solution of the utility model is as follows, a kind of fuel system of low pressure or negative pressure, its
Be characterised by, the fuel system include fuel tank assembly, drainer, canister, vavuum pump, the first check valve, the second check valve with
And built-in column, the first check valve is provided with the fuel tank assembly and is connected by pipeline at the top of drainer, and pipeline passes to
In the middle part of drainer；It is connected at the top of the drainer by pipeline with canister；The condensation pot bottom passes through pipeline and fuel tank assembly
Connection, and drainer bottom position is higher than at the top of fuel tank assembly；The vavuum pump be arranged on drainer and the first check valve it
Between pipeline on；Second check valve is arranged between condensation pot bottom and fuel tank assembly on pipeline.
As a kind of improvement of the present utility model, described built-in column one end is provided with pit, and fuel tank is welded on by melting
On the inner surface at upper bottom or bottom, the other end is plane, no pit, is not connected with fuel tank.This programme is begun by condensation, fuel tank
Low pressure or negative pressure are in eventually, larger malleation will not be produced, the column only needs to play a supporting role, and reduces fuel tank because negative pressure is produced
Raw Inward deflection.Built-in column both ends are connected with fuel tank in the prior art, are because to lean on column will be upper under barotropic condition
Lower surface is held, and reduces deformation；It is different from this programme.
Relative to prior art, the utility model has the following advantages that, the technical scheme reduces fuel oil using condensation principle
Case internal pressure, fuel tank is maintained low pressure or negative pressure state, reduce the requirement such as material, structure of fuel tank, reduction is set
Count development and manufacturing cost；Simultaneously for the deformation of negative pressure fuel tank, the technical scheme, which proposes a kind of, needs the interior of one end welding
Column is put, the other end is arranged to plane, it is not necessary to and inner wall of oil tank welding, reduce the deformation problems of fuel tank, effectively avoid
Fuel tank performance failure caused by because of deformation and safety problem.
Brief description of the drawings
Fig. 1 is the utility model overall structure diagram；
In figure：1st, fuel tank assembly, 2, drainer, 3, canister, 4, vavuum pump, the 5, first check valve, the 6, second check valve, 7,
Built-in column.
Embodiment：
Embodiment 1：Referring to figure, a kind of fuel system of low pressure or negative pressure, the fuel tank system include fuel tank assembly 1,
Drainer 2, canister 3, vavuum pump 4, the first check valve 5, the second check valve 6 and built-in column 7, set on the fuel tank assembly 1
It is equipped with the first check valve 5 and the top of drainer 2 is connected by pipeline, and pipeline passes to the middle part of drainer 2；The drainer 2 pushes up
Portion is connected by pipeline with canister 3；The bottom of drainer 2 is connected by pipeline with fuel tank assembly 1, and the bottom of drainer 2
Position is higher than the top of fuel tank assembly 1；The vavuum pump 4 is arranged on the pipeline between the check valve 5 of drainer 2 and first；It is described
Second check valve 6 is arranged between the bottom of drainer 2 and fuel tank assembly 1 on pipeline, and described built-in one end of column 7 is provided with pit,
It is welded on by melting above and below fuel tank on the inner surface at two bottoms.One end is arranged to plane, it is not necessary to and inner wall of oil tank welding, reduce
The deformation problems of fuel tank, effectively avoid the fuel tank because of deformation and caused by performance failure and safety problem.
Operation principle：Referring to Fig. 1, in vehicle traveling process, with the rise rocked with temperature of fuel oil, inside fuel tank
Form fuel-steam, internal pressure increase.When pressure increases to Opening pressure (the about 10KPa) of the first check valve 5, first is unidirectional
Valve 5 is opened, while ECU detection tank internal pressures control drainer 2 and vavuum pump 4 to work when reaching 10KPa, and fuel tank is total
Into the mixed vapour inside 1（Air and fuel-steam）It is evacuated in drainer 2, drainer 2 is made up of semi-conducting material, is powered
Afterwards, drainer inner chamber minimum temperature can reach -40 DEG C.The temperature of mixed vapour is about 55 DEG C, by the cooling of drainer 2
Afterwards, the fuel-steam in mixed vapour is condensed into liquid fuel, is flowed back by the pipeline and the second check valve 6 of the bottom of drainer 2
Into fuel tank assembly 1, residual gas（Most of air and a small amount of fuel-steam）Canister 3 is passed to pipeline, is adsorbed through canister 3 surplus
After fuel-steam in residual air body, pure air is discharged into air.After part mixed vapour inside fuel tank assembly 1 is extracted, energy
It is enough effectively to reduce fuel tank malleation peak, fuel tank is maintained low pressure or negative pressure（About -25KPa ~+5KPa）State.Reducing
While fuel tank malleation peak, increase, the minimum reachable -25KPa of negative pressure can be produced to the negative pressure peak of fuel tank.For negative pressure
The deformation of fuel tank, in a kind of built-in column of one end welding of fuel tank indoor design.With existing both ends welding built in column phase
Than, only the built-in column of one end welding can fall, in impact test adapt to fuel tank internally pressure effect under deformation,
So that supporting construction is avoided in the case where axial strength is not fully utilized, its connecting end surface just occurs tear and lost in advance
Effect.
The fuel system of low pressure or negative pressure proposed by the present invention, fuel tank internal pressure is reduced using condensation principle, makes combustion
Fuel tank maintains low pressure or negative pressure state, reduces the requirement such as material, structure of fuel tank, and manufacturing cost is designed and developed in reduction.
Simultaneously for the deformation of negative pressure fuel tank, a kind of built-in column of one end welding is being proposed, is reducing the deformation problems of fuel tank,
Effectively avoid fuel tank because of deformation and caused by performance failure and safety problem.
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 (2)
1. the fuel system of a kind of low pressure or negative pressure, it is characterised in that the fuel system includes fuel tank assembly, drainer, carbon
Tank, vavuum pump, the first check valve, the second check valve and built-in column, the first check valve is provided with the fuel tank assembly and is led to
Cross at the top of pipeline connection drainer, and pipeline is passed in the middle part of drainer；It is connected at the top of the drainer by pipeline with canister；
The condensation pot bottom is connected by pipeline with fuel tank assembly, and drainer bottom position is higher than at the top of fuel tank assembly；It is described
Vavuum pump is arranged on the pipeline between drainer and the first check valve；Second check valve is arranged on condensation pot bottom and oil
Between box assembly on pipeline.
2. the fuel system of low pressure according to claim 1 or negative pressure, it is characterised in that described built-in column one end is provided with
Pit, by melt be welded on fuel tank on the inner surface of bottom or bottom, the other end is plane, no pit, not with fuel tank phase
Even.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720375480.9U CN206797117U (en) | 2017-04-11 | 2017-04-11 | The fuel system of low pressure or negative pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720375480.9U CN206797117U (en) | 2017-04-11 | 2017-04-11 | The fuel system of low pressure or negative pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206797117U true CN206797117U (en) | 2017-12-26 |
Family
ID=60732688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720375480.9U Active CN206797117U (en) | 2017-04-11 | 2017-04-11 | The fuel system of low pressure or negative pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206797117U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671236A (en) * | 2019-09-03 | 2020-01-10 | 德安福(天津)汽车技术有限公司 | Fuel steam generator |
-
2017
- 2017-04-11 CN CN201720375480.9U patent/CN206797117U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671236A (en) * | 2019-09-03 | 2020-01-10 | 德安福(天津)汽车技术有限公司 | Fuel steam generator |
| CN110671236B (en) * | 2019-09-03 | 2021-07-13 | 德安福(天津)汽车技术有限公司 | Fuel steam generator |
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|---|---|---|---|
| GR01 | Patent grant |