CN108397312A - A kind of fuel system Steam Recovery method, system and vehicle - Google Patents
A kind of fuel system Steam Recovery method, system and vehicle Download PDFInfo
- Publication number
- CN108397312A CN108397312A CN201810277204.8A CN201810277204A CN108397312A CN 108397312 A CN108397312 A CN 108397312A CN 201810277204 A CN201810277204 A CN 201810277204A CN 108397312 A CN108397312 A CN 108397312A
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- Prior art keywords
- fuel
- fuel tank
- canister
- oil
- vehicle
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
A kind of fuel system Steam Recovery method of present invention proposition, system and vehicle, overall plan are：When vehicle fuel fills, the oil vapour generated in fuel system is adsorbed by canister；In non-oiling operating mode, if being barotropic state inside fuel tank, oil vapour carries out Oil-gas Separation by gas and oil separating plant；If being negative pressure state in fuel tank, fuel tank adsorbs fresh air by canister, while fresh air is also desorbed the fuel-steam adsorbed in canister.The present invention does not reduce fuel steam discharge using high pressure fuel case, using Normal Fuel-Oil Tank, can reduce fuel tank development difficulty, reduce development cost, period.Because fuel system pressure is low, the influence that fuel system micropore discharges fuel evaporation can be reduced, while also reducing the influence of leakproofness, temperature to fuel system discharge vaporization.It is desorbed in addition, canister does not need engine, it is possible to reduce Engine Matching works.
Description
Technical field
The present invention relates to fuel systems, and in particular to fuel-steam recovery scheme.
Background technology
Existing gasoline automobile fuel system has fuel-steam recovery scheme.Major programme is to be adsorbed in fuel tank by canister
Fuel-steam in canister is desorbed in the fuel-steam of generation, the negative pressure generated by engine.Current Steam Recovery side
Case is widely used on common gasoline car, can meet the requirement of emission regulation.
It can not be effectively to fuel oil because the startup time of engine is short for plug-in hybrid electric vehicle PHEV gasoline cars
Steam is recycled.Usual Steam Recovery scheme is to use high pressure resistant fuel tank, and fuel tank is sealing, production under normal circumstances
Raw fuel-steam does not discharge outward.Just fuel-steam is arranged when pressure is more than setting pressure when refueling or in fuel tank
It is put into canister.The program also needs engine and canister is desorbed, by using pressure-oil tank scheme, it is possible to reduce combustion
Oil vapour generates, to reduce fuel evaporation discharge capacity.
With the development of auto industry, more and more gasoline cars are using the electric scheme mixed of oil.Plug-in hybrid
In automobile, the working time of petrol engine is shorter and shorter.The engine work when low mileage traveling or discharge vaporization regulation are tested
It is too short to make the time.Fuel-steam in canister cannot enter engine combustion, cause in discharge vaporization test or user in use,
Fuel-steam is overflowed from canister, causes the pollution and energy waste of environment.
Using high pressure resistant fuel tank, it is possible to reduce the discharge of fuel-steam.But high pressure resistant fuel tank cost is higher, to fuel oil
The sealing requirements of system are stringent, and excessively high environment temperature also can be more than the pressure-resistant range of fuel tank, lead to the leakage of fuel-steam.
Invention content
A kind of fuel system Steam Recovery method of present invention proposition, system and vehicle, are set by rational structure and control
Meter, solves the problems, such as above-mentioned discharge vaporization existing for PHEV gasoline cars.
Technical scheme is as follows：
The fuel system Steam Recovery method of the present invention is generally, and when vehicle fuel fills, fuel system is adsorbed by canister
The oil vapour of middle generation；In non-oiling operating mode, if fuel tank inside be barotropic state, oil vapour by gas and oil separating plant into
Row Oil-gas Separation；If being negative pressure state in fuel tank, fuel tank adsorbs fresh air by canister, while fresh air is also to canister
The fuel-steam of interior absorption is desorbed.
Specifically, for vehicle in fuel filling, fuel tank door position sensor 6 detects that fuel tank cap 4 is in an open state, signal
Threeway valve control is inputted, triple valve is by the pipeline connection between fuel tank 3 and canister 7, and fuel-steam passes through pipe in fuel tank
Road enters canister 7.
For vehicle in non-oiling operating mode, fuel tank door position sensor detects that fuel tank cap is in off state, if tank pressure
Sensor checks fuel tank negative pressure state, and signal inputs three-way valve control device, and triple valve is by canister between fuel tank
Pipeline connection, under the action of negative pressure, fresh air enters fuel tank, while the fuel-steam that will be adsorbed in canister by canister
It brings fuel tank into, canister is desorbed.
For vehicle in non-oiling operating mode, fuel tank door position sensor detects that fuel tank cap is in off state, if pressure sensing
Device detects that fuel tank is barotropic state, and signal inputs three-way valve control device, and triple valve is by fuel tank and gas and oil separating plant
Between pipeline connection, fuel-steam enters gas and oil separating plant by fuel tank.
Fuel system vapor-recovery system proposed by the present invention include fuel tank, canister, gas and oil separating plant and they
Between connecting line.Triple valve, fuel tank are set on the connecting line between the fuel tank, canister and gas and oil separating plant
On fuel tank door position sensor is installed, detect the on off state of fuel tank cap, tank pressure sensing device be installed on fuel tank, examine
The pressure state of fuel tank is looked into, sensor signal inputs threeway valve control, and threeway valve control controls the communicating pipe of triple valve
The state on road.
The present invention also proposes that above-mentioned vehicle fuel System steam recovery system is arranged in a kind of vehicle, the vehicle.
The vehicle that the present invention is directed to is electric-type hybrid electric vehicle PHEV gasoline cars.
Technical solution using the present invention does not reduce fuel steam discharge, using regular fuel using high pressure fuel case
Case can reduce fuel tank development difficulty, reduce development cost, period.Because fuel system pressure is low, Fuel System can be reduced
The influence that system micropore discharges fuel evaporation, while also reducing the influence of leakproofness, temperature to fuel system discharge vaporization.Separately
Outside, canister does not need engine and is desorbed, it is possible to reduce Engine Matching works.
Description of the drawings
Fig. 1 is that fuel system fills in filling process, fuel steam discharge path schematic diagram；
Fig. 2 be fuel tank be negative pressure when, air enters fuel tank schematic diagram by canister；
Fig. 3 be fuel tank be positive pressure when, liquid level of fuel oil in fuel tank steam passes through oil gas filter to air schematic diagram.
Specific implementation mode
The present invention is done below in conjunction with attached drawing and carries out a step detailed description：
The fuel system Steam Recovery method of the present invention is to adsorb the oil generated in fuel system by canister in refueling process
Steam.During normal use, fuel tank may generate positive pressure because of the raising of temperature, fuel tank.Oil steams in fuel tank at this time
Vapour is by gas and oil separating plant, and by liquid fuel return fuel case, the gas after Oil-gas Separation is arranged to air.When temperature reduce,
Or when liquid level of fuel oil in fuel tank reduction, negative pressure is generated in fuel tank.Fuel tank adsorbs fresh air by canister atmosphere entry at this time, fresh
Air enters fuel tank by canister, while also the fuel-steam adsorbed in canister being desorbed.
As shown in Figure 1, Figure 2 and Figure 3, the fuel system vapor-recovery system that the present invention uses include fuel tank 3, canister 7,
Gas and oil separating plant 10 and the connecting line between them.Connection between fuel tank 3, canister 7 and gas and oil separating plant 10
Triple valve 9 is set on pipeline, fuel tank door position sensor 6 is installed on fuel tank 3, detects the on off state of fuel tank cap 4, fuel oil
Tank pressure sensing device 3 is installed on case 3, checks that the pressure state of fuel tank 3, sensor signal input threeway valve control,
Threeway valve control controls the state of the connecting pipeline of triple valve 9.
Referring to Fig. 1, in fuel filling, fuel tank door position sensor 6 detects that oil tank door 5, fuel tank cap 4 are open shape
State.The signal inputs 9 control device of triple valve, by the pipeline connection between fuel tank 3 and canister 7, during fuel filling, and combustion
Oil flows into fuel tank through oil filling pipe 4, and fuel-steam enters canister 7 by pipeline in fuel tank.Canister adsorbed gasoline molecule, will be empty
Gas is discharged from canister atmosphere entry 8.
Referring to Fig. 2, vehicle is in non-oiling operating mode, fuel tank door position sensor 6, detects that oil tank door 5, fuel tank cap 4 are
Closed state.Because fuel pump 1 extracts liquid level of fuel oil in fuel tank out, or during temperature reduces, fuel tank 3 forms internal negative pressure, oil
After case pressure sensor 2 checks negative pressure, the signal input 9 control device of triple valve, triple valve by canister 7 to fuel tank 3 it
Between pipeline connection.Under the action of negative pressure, fresh air enters fuel tank 3, while the combustion that will be adsorbed in canister by canister 7
Oil vapour brings fuel tank into.The process be to the desorption process of canister, be desorbed volume of air number generate with fuel tank
Vacuum magnitude is related.
Referring to Fig. 3, vehicle is in non-oiling operating mode, fuel tank door position sensor 6, detects that oil tank door 5, fuel tank cap 4 are
Closed state.In external temperature elevation process, pressure increases in fuel tank 3, and pressure sensor 2 detects that fuel tank is positive pressure
State.The signal inputs 9 control device of triple valve, and fuel tank 3 is connected to by triple valve with gas and oil separating plant 10.Fuel-steam is logical
It crosses fuel tank 3 and enters gas and oil separating plant 10.Condensation method and membrane separation process may be used in gas and oil separating plant, in fuel-steam
Petrol molecule detached.Petrol molecule or liquid gasoline after separation flow back into fuel tank by pipeline, and air passes through logical
Air valve 11 is discharged into air.
In the present system, canister 7 only adsorbs the fuel-steam generated in fuel tank 3 when refueling, when vehicle is normal
In the process, the fuel-steam of generation is recycled by gas and oil separating plant 10.The fuel oil in environment temperature reduction or fuel tank 3 simultaneously
Canister can be desorbed in extraction process.
The foregoing is merely the preferred embodiment of the present invention, are not intended to restrict the invention, it is clear that those skilled in the art
Various changes and modifications can be made to the invention by member without departing from the spirit and scope of the present invention.If in this way, the present invention
Within the scope of the claims of the present invention and its equivalent technology, then the present invention is also intended to include these these modifications and variations
Including modification and variation.
Claims (10)
1. a kind of fuel system Steam Recovery method, which is characterized in that the method is：When vehicle fuel fills, pass through charcoal
The oil vapour generated in tank absorption fuel system；In non-oiling operating mode, if being barotropic state inside fuel tank, oil vapour passes through
Gas and oil separating plant carries out Oil-gas Separation；If being negative pressure state in fuel tank, fuel tank adsorbs fresh air by canister, with stylish
Fresh air is also desorbed the fuel-steam adsorbed in canister.
2. fuel system Steam Recovery method according to claim 1, which is characterized in that vehicle is in fuel filling, oil
Chamber door position sensor（6）Detect fuel tank cap（4）It is in an open state, signal inputs threeway valve control, triple valve（9）It will combustion
Fuel tank（3）With canister（7）Between pipeline connection, fuel-steam enters canister by pipeline in fuel tank.
3. fuel system Steam Recovery method according to claim 1, which is characterized in that vehicle in non-oiling operating mode,
Fuel tank door position sensor（6）Detect fuel tank cap（4）It is in off state, if tank pressure sensing device（2）Check fuel tank
（3）Negative pressure state, signal input three-way valve control device, triple valve（9）By canister（7）To the pipeline connection between fuel tank,
Under the action of negative pressure, fresh air passes through canister（7）Into fuel tank（3）, while the fuel-steam band that will be adsorbed in canister
Enter fuel tank, canister is desorbed.
4. fuel system Steam Recovery method according to claim 1, which is characterized in that vehicle in non-oiling operating mode,
Fuel tank door position sensor（6）Detect fuel tank cap（4）It is in off state, if pressure sensor（2）Detect fuel tank（3）For
Barotropic state, signal input three-way valve control device, triple valve（9）By fuel tank（3）And gas and oil separating plant（10）Between
Pipeline connection, fuel-steam pass through fuel tank（3）Into gas and oil separating plant（10）.
5. a kind of fuel system vapor-recovery system, including fuel tank（3）, canister（7）, gas and oil separating plant（10）And they
Between connecting line；It is characterized in that, the fuel tank（3）, canister（7）And gas and oil separating plant（10）Between connecting tube
Road setting triple valve（9）, fuel tank（3）On fuel tank door position sensor is installed（6）, detect fuel tank cap（4）Switch shape
State, fuel tank（3）On tank pressure sensing device is installed（2）, check fuel tank（3）Pressure state, sensor signal input
Threeway valve control, threeway valve control control triple valve（9）Connecting pipeline state.
6. fuel system vapor-recovery system according to claim 5, which is characterized in that when oil fills, oil tank door position
Set sensor（6）Detect fuel tank cap（4）It is in an open state, signal inputs three-way valve control device, and triple valve is by fuel tank（3）
With canister（7）Between pipeline connection, fuel-steam enters canister by pipeline in fuel tank（7）.
7. fuel system vapor-recovery system according to claim 5, which is characterized in that vehicle is in non-oiling operating mode, oil
Chamber door position sensor（6）Detect fuel tank cap（4）It is in off state, if tank pressure sensing device（2）Check fuel tank（3）
Negative pressure state, sensor signal input three-way valve control device, triple valve（9）By canister（7）To fuel tank（3）Between pipeline
Connection, under the action of negative pressure, fresh air passes through canister（7）Into fuel tank（3）, while the fuel oil adsorbed in canister being steamed
Vapour brings fuel tank into, and canister is desorbed.
8. fuel system vapor-recovery system according to claim 5, which is characterized in that vehicle is in non-oiling operating mode, oil
Chamber door position sensor（6）Detect fuel tank cap（4）It is in off state, if pressure sensor（2）Detect fuel tank（3）For just
Pressure condition, sensor signal input three-way valve control device, triple valve（9）By fuel tank（3）And gas and oil separating plant（10）It
Between pipeline connection, fuel-steam passes through fuel tank（3）Into gas and oil separating plant（10）.
9. fuel system vapor-recovery system according to claim 5, which is characterized in that the vehicle is that electric-type mixing is dynamic
Power vehicle PHEV gasoline cars.
10. a kind of vehicle, which is characterized in that the vehicle is provided with claim 5-9 any one of them vehicle fuel systems
Vapor-recovery system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810277204.8A CN108397312A (en) | 2018-03-31 | 2018-03-31 | A kind of fuel system Steam Recovery method, system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810277204.8A CN108397312A (en) | 2018-03-31 | 2018-03-31 | A kind of fuel system Steam Recovery method, system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108397312A true CN108397312A (en) | 2018-08-14 |
Family
ID=63099072
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810277204.8A Pending CN108397312A (en) | 2018-03-31 | 2018-03-31 | A kind of fuel system Steam Recovery method, system and vehicle |
Country Status (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109334437A (en) * | 2018-09-18 | 2019-02-15 | 上汽通用汽车有限公司 | Hybrid vehicle fuel tank control system, method, storage medium and electronic equipment |
| CN112594096A (en) * | 2020-12-09 | 2021-04-02 | 亚普汽车部件股份有限公司 | Electric control valve, electric control fuel system and control method |
| CN113107712A (en) * | 2021-03-31 | 2021-07-13 | 浙江吉利控股集团有限公司 | A desorption system and vehicle for ORVR motorcycle type |
| CN114718774A (en) * | 2022-04-13 | 2022-07-08 | 安阳工学院 | Device for improving oil gas recovery efficiency in fuel oil system and control method |
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| CN2118824U (en) * | 1992-01-14 | 1992-10-14 | 长春市文教环保设备厂 | Control device for micro car fuel combustion evaporating exhaust |
| JPH0681726A (en) * | 1992-08-31 | 1994-03-22 | Mazda Motor Corp | Evaporative fuel processing device for engine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109334437A (en) * | 2018-09-18 | 2019-02-15 | 上汽通用汽车有限公司 | Hybrid vehicle fuel tank control system, method, storage medium and electronic equipment |
| CN112594096A (en) * | 2020-12-09 | 2021-04-02 | 亚普汽车部件股份有限公司 | Electric control valve, electric control fuel system and control method |
| CN113107712A (en) * | 2021-03-31 | 2021-07-13 | 浙江吉利控股集团有限公司 | A desorption system and vehicle for ORVR motorcycle type |
| CN114718774A (en) * | 2022-04-13 | 2022-07-08 | 安阳工学院 | Device for improving oil gas recovery efficiency in fuel oil system and control method |
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Application publication date: 20180814 |
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