CN105114225B - Adjust the fuel system and control method of internal pressure - Google Patents
Adjust the fuel system and control method of internal pressure Download PDFInfo
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- CN105114225B CN105114225B CN201510515066.9A CN201510515066A CN105114225B CN 105114225 B CN105114225 B CN 105114225B CN 201510515066 A CN201510515066 A CN 201510515066A CN 105114225 B CN105114225 B CN 105114225B
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- fuel tank
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Abstract
The present invention relates to a kind of fuel systems for adjusting internal pressure, it is characterized in that, the fuel system includes ECU, engine, battery, carbon pump, locking closure and fuel tank assembly, the ECU passes through connection battery, engine and carbon pump, the carbon pump passes through piping connection fuel tank assembly, the locking closure passes through piping connection fuel tank assembly, the fuel system further includes semiconductor refrigerating/heater, the semiconductor refrigerating/heater is arranged on fuel tank assembly, and connect by route with battery, it is connected by pipeline and carbon pump.The technical solution can regulating oil tank internal pressure, total is simple, ingenious in design, and fuel tank lighter in weight, cost is relatively low, effectively inhibits hydrocarbon vapor and outwardly discharges.
Description
Technical field
The present invention relates to the fuel systems for adjusting internal pressure, relate in particular to a kind of Fuel System for adjusting internal pressure
System and control method, belong to fuel tank manufacturing technology field.
Background technique
As electric car continues to develop, hybrid vehicle in the market is more and more, hybrid vehicle mainly by
Other driven by energy such as battery, only under battery power consumption finishes or other rare occasions, automobile just relies on engine
Non-combusted fuels driving, but battery is usually to be repeated charging to use for Automobile drive, and therefore, automobile engine does not work usually,
The problem of fuel oil in fuel tank cannot be used, be caused for a long time is the fuel oil in fuel tank, especially gasoline, constantly volatilize into
Enter canister, and engine cannot use for a long time, therefore canister is unable to get desorption for a long time, when canister adsorbs centainly hydrocarbon
After steam, hydrocarbon vapor constantly will outwardly overflow, and cause great environmental pollution, not meet the correlation method of environmental protection administration
Rule require, also, great amount of fuel oil is caused to waste.During automobile fuel filler, the hydrocarbon vapor in fuel tank enters canister, and hydrocarbon point
After son is adsorbed, clean air is discharged from canister lower port, canister removal control valve is in off state at this time, and hydrocarbon vapor can not
Into engine, subsequent engine burning disorder is avoided.In running car, ECU, that is, Electronic Control
Unit, electronic control unit, also known as " car running computer ", " vehicle-mounted computer " etc. can send a signal to canister removal control valve automatically,
Make its opening, the hydrocarbon molecules of canister are desorbed to engine combustion the bronchus negative pressure that engine generates.Therefore, the prior art
In fuel system have the following problems: 1) structure is complicated for entire fuel system, needs resistance to larger pressure；2) whole fuel tank weight
In comparing, higher cost；3) canister is unable to get desorption for a long time, causes greatly to pollute to environment, and causes energy wave
Take.Therefore there is an urgent need for a kind of new schemes to solve the technical problem.
Summary of the invention
The present invention exactly for the technical problems in the prior art, provides a kind of fuel system for adjusting internal pressure
And control method, the technical solution can regulating oil tank internal pressure, total is simple, ingenious in design, fuel tank lighter in weight,
Cost is relatively low, effectively inhibits hydrocarbon vapor and outwardly discharges.
To achieve the goals above, technical scheme is as follows, adjusts the fuel system of internal pressure, and feature exists
In the fuel system includes that ECU, engine, battery, carbon pump, locking closure and fuel tank assembly, the ECU pass through connection
Battery, engine and carbon pump, for the carbon pump by piping connection fuel tank assembly, the locking closure is total by piping connection fuel tank
At, the fuel system further includes semiconductor refrigerating/heater, and the semiconductor refrigerating/heater is arranged on fuel tank assembly,
And connect by route with battery, it is connected by pipeline and carbon pump.
As an improvement of the present invention, the fuel system further includes isolating valve, isolating valve setting in canister and
On pipeline between fuel tank assembly.
As an improvement of the present invention, pressure sensor is provided on the fuel tank assembly.
As an improvement of the present invention, exhaust valve is provided on the fuel tank assembly.
As an improvement of the present invention, the fuel system further includes inverter, the inverter setting
On route between ECU and battery.
As an improvement of the present invention, the fuel system further includes canister removal control valve, the canister desorption control
Valve processed is arranged on the route between ECU and engine and canister.
As an improvement of the present invention, the fuel system further includes fueling signal trigger, the fueling signal touching
It sends out device and passes through connection ECU.
As an improvement of the present invention, the semiconductor refrigerating/heater is made of two panels potsherd, there is N among it
Type and p-type semiconductor material, wherein semiconductor material is bismuth telluride.
As an improvement of the present invention, the temperature range of the semiconductor refrigerating/heater is -40 ~ 80 degree, volume
For 300mm*300mm*300mm.Semiconductor refrigerating/heater maximum temperature can reach+80 degree, and minimum temperature can reach -40
Degree, fully meets the desorption and absorption property of canister；Its volume makes it cover canister area in 300mm*300mm*300mm,
Reach preferable cooling/heating effect.
Adjust internal pressure fuel system control method, which is characterized in that the control method the following steps are included:
1) fueling signal trigger sends a signal to ECU；2) ECU opens isolating valve, the fuel tank normal exhaust in refueling process；3)
Battery is to conductor refrigeration/heating installation power supply；4) conductor refrigeration/heater working end heat absorption, reaches refrigeration effect.
Compared with the existing technology, advantages of the present invention is as follows: 1) overall construction design of the present invention is ingenious, compact-sized, real
Strong with property, canister is small in size, and cost reduces；2) semiconductor refrigerating/heater is set in the technical solution, can not only be freezed but also can
With heating, work operating is to use DC current, determines to realize on same refrigerator by changing the polarity of DC current and make
Cold or heating, in refueling process, by the cooling effect to canister, increases the hydrocarbon molecules absorption property of canister；This
The canister of the smaller canister volume of sample or poor carbon dust can also reach expected canister absorption property；In vehicle traveling process, sending out
In motivation desorption process, by the heat effect to canister, the hydrocarbon molecules of increased canister are desorbed performance, in such canister
Hydrocarbon molecules can be clean by desorption easily, avoid the hydrocarbon molecules in canister residual and slowly cruise in canister and outward
Discharge is overflowed on boundary, avoids environmental pollution.In addition, the hydrocarbon molecules energy engine completely burned of canister generates power, section
The about energy；3) conductor refrigeration/heater is small in size, light-weight in the technical solution, does not need any refrigerant, and service life
It is long, fully meet auto parts and components applying working condition；4) technical solution protects environment, has saved the energy, by primary Calculation
Analysis unifies day discharge vaporization with a vehicle Fuel System and reduces 50mg calculating, 1 year saving 18g；It is unified with a vehicle Fuel System
Secondary oiling discharge reduces 3g and calculates, and monthly refuels twice, 1 year saving 72g；The fuel oil of saving, that is, less environmental pollution numerical value；
It is this to seem very little environmental protection contribution, under increasingly harsher world's environmental requirement, it appears especially valuable, and
In addition huge automobile quantity, from the point of view of long-range Environmental Protection Plan, the technical solution is significant.
Detailed description of the invention
Fig. 1 is overall structure of the present invention；
In figure: 1, ECU, 2, inverter, 3, engine, 4, canister removal control valve, 5, fueling signal trigger, 6,
Battery, 7, semiconductor refrigerating/heater, 8, canister, 9, fuel tank assembly, 10, locking closure, 11, isolating valve, 12, pressure sensor,
13, exhaust valve.
Specific embodiment
In order to deepen the understanding of the present invention and recognize, the present invention is made into one with reference to the accompanying drawings and detailed description
Step description and introduction.
Embodiment 1: referring to Fig. 1, adjusting the fuel system of internal pressure, the fuel system include ECU1, engine 3,
Battery 6, carbon pump 8, locking closure 10 and fuel tank assembly 9, the ECU1 pass through connection battery 6, engine 3 and carbon pump 8, institute
Carbon pump 8 is stated by piping connection fuel tank assembly 9, the locking closure 10 is also wrapped by piping connection fuel tank assembly 9, the fuel system
Semiconductor refrigerating/heater 7 is included, the semiconductor refrigerating/heater 7 is arranged on fuel tank assembly 9, and passes through route and battery
6 connections are connect by pipeline with carbon pump 8；The fuel system further includes isolating valve 11, and the isolating valve 11 is arranged in canister 8
On pipeline between fuel tank assembly 9；Pressure sensor 12 is provided on the fuel tank assembly；It is provided on the fuel tank assembly
Exhaust valve 13.The fuel system further includes fueling signal trigger 5, and the fueling signal trigger 5 passes through connection
ECU1, the fuel system further include inverter 2, and the route between ECU1 and battery 6 is arranged in the inverter 2
On；The fuel system further includes canister removal control valve 4, the canister removal control valve 4 setting in ECU1 and engine 3 and
On route between canister 8.Due to being additionally arranged semiconductor refrigerating/heater 7, canister removal control valve 4, adding in the technical solution
Oily signal trigger 5, isolating valve 11, pressure sensor 12 etc., in refueling process, the signal of oiling passes to ECU, and ECU makes
Isolating valve is opened, so that the fuel tank normal exhaust in refueling process；By the cooling effect to canister, the hydrocarbon of canister is increased
Molecular Adsorption performance；The canister of canister volume smaller in this way or poor carbon dust can also reach expected canister absorption property；Automobile
In driving process, in engine desorption process, by the heat effect to canister, the hydrocarbon molecules of increased canister are desorbed
Performance, the hydrocarbon molecules in such canister can be clean by desorption easily, and the hydrocarbon molecules avoided in canister residual slowly exist
It cruises in canister and outwardly overflows discharge, avoid environmental pollution；In addition, the hydrocarbon molecules energy engine of canister is complete
Burning generates power, has saved the energy.
Embodiment 2: referring to Fig. 1, as an improvement of the present invention, the semiconductor refrigerating/heater 7 is by two panels ceramics
Piece composition, there is N-type and p-type semiconductor material among it, and wherein semiconductor material is bismuth telluride.Conductor refrigeration/the heating
Device with refrigeration but also can not only heat, and work operating is to use DC current, and automobile batteries is exactly to generate direct current, straight by changing
The polarity of galvanic electricity stream determines to realize refrigeration or heating on same refrigerator；The refrigerator of one monolithic, it is by two panels ceramics
Piece composition, there is the semiconductor material of N-type and p-type among it, this semiconductor element is with cascade on circuit by multiple
Monolithic refrigerator connection composition.When electric current by N grades by P grades when, working end heat absorption, reach refrigeration effect；When electric current is by P grades
When by N grades, working end heat release reaches heating effect.
Embodiment 3: referring to Fig. 1, as an improvement of the present invention, the temperature range of the semiconductor refrigerating/heater 7
It is -40 ~ 80 degree, volume 300mm*300mm*300mm.Semiconductor refrigerating/heater maximum temperature can reach+80 degree,
Minimum temperature can reach -40 degree, fully meet the desorption and absorption property of canister；Its volume in 300mm*300mm*300mm,
So that it is covered canister area, reaches preferable cooling/heating effect.Semiconductor cooler thermal inertia is very small, when cooling and heating type
Between quickly, in the case where the good cold end of hot-side heat dissipation is unloaded, as soon as being powered less than minute, refrigerator can reach maximum temperature difference,
It can achieve 40 degree or so.In addition conductor refrigeration/heater is small in size, light-weight, does not need any refrigerant, and service life
It is long, fully meet auto parts and components applying working condition.
Working principle:
Referring to Fig. 1, when oiling, before oiling, driver drive a car fuel tank cap when, the signal of oiling passes to ECU, and ECU makes
Isolating valve 11 is opened, so that the fuel tank normal exhaust in refueling process；Trigger fueling signal trigger 5, fueling signal trigger 5
ECU1 signal is given, promotes automobile batteries 6 to supply direct current to semiconductor cooling/heating device 7, flow is caused by semiconductor at this time
When the N grade of cold/heater 7 is by P grades, working end heat absorption reaches refrigeration effect；The decline of canister temperature, in refueling process,
Canister is improved to the hydrocarbon vapor adsorption effect generated that refuels.When running car, automobile during traveling or parking, every
Fuel system and ambient atmosphere are isolated from valve 11, the condition being not turned on, pressure sensor 12 detects tank internal pressure, such as
Fruit detects normal pressure, for example, 5KPa hereinafter, or -2KPa or more because such pressure does not cause performance to traditional fuel tank
It influences, ECU, which does not issue signal, makes semiconductor refrigerating/heater 7 work；If it is excessively just that the pressure of detection, which is greater than 5KPa,
Pressure, ECU connection automobile batteries 6 and semiconductor refrigerating/heater 7 flow through alternating current from it, semiconductor refrigerating/heater 7
Fuel tank internal working end refrigeration, in this way, fuel tank internal temperature decline, hydrocarbon vapor is just by cryogenic condensation at liquid, fuel tank
Pressure decline, when being lower than 5KPa, ECU 1 disconnects automobile batteries 6 and semiconductor refrigerating/heater 7；If the pressure of detection
It is excessive negative pressure less than -2KPa, ECU is connected to automobile batteries and semiconductor refrigerating/heater, flows through alternating current from it,
And current direction, semiconductor refrigerating/heater fuel tank internal working end heating, in this way, oily are changed by inverter
Case internal temperature increases, and liquid level of fuel oil in fuel tank just generates more hydrocarbon vapors, and the pressure of fuel tank rises, when being higher than -2KPa,
ECU disconnects automobile batteries and semiconductor refrigerating/heater.The technical solution uses in semiconductor refrigerating/heater regulating oil tank
Portion's temperature carrys out trim tank internal pressure, so that isolating valve is completely isolated with ambient atmosphere by fuel system, it is suppressed that hydrocarbon steaming
Vapour outwardly discharges, and protects environment；By heating to canister in the different time stage and refrigeration, realize canister to carbon
The high absorption property of hydrogen molecule and high desorption performance, have saved the energy, have reduced costs.
The present invention can also form in combination with example 1 at least one of embodiment 2,3 technical characteristics new
Embodiment.
It should be noted that above-described embodiment, is not intended to limit the scope of protection of the present invention, in above-mentioned technical proposal
On the basis of made equivalents or substitution each fall within the range that the claims in the present invention are protected.
Claims (2)
1. adjust internal pressure fuel system, which is characterized in that the fuel system include ECU, engine, battery, carbon pump,
Locking closure and fuel tank assembly, the ECU pass through piping connection by connection battery, engine and carbon pump, the carbon pump
Fuel tank assembly, for the locking closure by piping connection fuel tank assembly, the fuel system further includes semiconductor refrigerating/heater, institute
It states semiconductor refrigerating/heater to be arranged on fuel tank assembly, and is connect by route with battery, connected by pipeline and carbon pump,
The fuel system further includes isolating valve, and the isolating valve is arranged on the pipeline between canister and fuel tank assembly, the fuel tank
It is provided with pressure sensor on assembly, exhaust valve is provided on the fuel tank assembly, the fuel system further includes electric current commutation
Device, the inverter are arranged on the route between ECU and battery, and the fuel system further includes canister desorption control
Valve, the canister removal control valve are arranged on the route between ECU and engine and canister, and the fuel system further includes adding
Oily signal trigger, the fueling signal trigger are made pottery by connection ECU, the semiconductor refrigerating/heater by two panels
Tile composition, there is N-type and p-type semiconductor material among it, and wherein semiconductor material is bismuth telluride, the semiconductor refrigerating/add
The temperature range of hot device is -40 ~ 80 degree, volume 300mm*300mm*300mm.
2. the control method based on the fuel system described in claim 1 for adjusting internal pressure, which is characterized in that the control
Method is the following steps are included: 1) fueling signal trigger sends a signal to ECU；2) ECU opens isolating valve, in refueling process
Fuel tank normal exhaust；3) battery is to conductor refrigeration/heating installation power supply；4) conductor refrigeration/heater working end heat absorption, reaches
Refrigeration effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510515066.9A CN105114225B (en) | 2015-08-21 | 2015-08-21 | Adjust the fuel system and control method of internal pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510515066.9A CN105114225B (en) | 2015-08-21 | 2015-08-21 | Adjust the fuel system and control method of internal pressure |
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| Publication Number | Publication Date |
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| CN105114225A CN105114225A (en) | 2015-12-02 |
| CN105114225B true CN105114225B (en) | 2019-04-23 |
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| CN201510515066.9A Active CN105114225B (en) | 2015-08-21 | 2015-08-21 | Adjust the fuel system and control method of internal pressure |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107542598B (en) * | 2016-06-28 | 2019-07-26 | 长城汽车股份有限公司 | High pressure fuel vapo(u)rization system and its control method, vehicle |
| CN109642522B (en) * | 2016-07-15 | 2021-10-29 | 伊顿智能动力有限公司 | Electronic evaporative emission management system |
| CN106240348A (en) * | 2016-08-02 | 2016-12-21 | 观致汽车有限公司 | Control the system and method for fuel tank internal gas pressure |
| CN107143441A (en) * | 2017-06-29 | 2017-09-08 | 浙江吉利汽车研究院有限公司 | A kind of vehicle fuel evaporation control system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63150459A (en) * | 1986-12-12 | 1988-06-23 | Aisan Ind Co Ltd | Control device for heating of canister |
| KR100559838B1 (en) * | 2003-05-01 | 2006-03-10 | 기아자동차주식회사 | A purge device for fuel gas in automobile |
| JP2009216078A (en) * | 2008-02-12 | 2009-09-24 | Aisan Ind Co Ltd | Evaporated fuel processing device |
| CN102011661A (en) * | 2010-12-27 | 2011-04-13 | 东风汽车公司 | Carbon tank capable of adjusting temperature |
| CN202707294U (en) * | 2012-07-06 | 2013-01-30 | 江苏大学 | Vehicle recovery device for gasoline vapor |
| CN202789250U (en) * | 2012-08-27 | 2013-03-13 | 亚普汽车部件股份有限公司 | Fuel tank capable of controlling internal temperature |
| CN205064146U (en) * | 2015-08-21 | 2016-03-02 | 亚普汽车部件股份有限公司 | Adjust internal pressure's fuel oil system |
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