CN201511812U - Fuel steam system for hybrid electric vehicle - Google Patents
Fuel steam system for hybrid electric vehicle Download PDFInfo
- Publication number
- CN201511812U CN201511812U CN2009202363593U CN200920236359U CN201511812U CN 201511812 U CN201511812 U CN 201511812U CN 2009202363593 U CN2009202363593 U CN 2009202363593U CN 200920236359 U CN200920236359 U CN 200920236359U CN 201511812 U CN201511812 U CN 201511812U
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- fuel
- pressure
- control unit
- fuel tank
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Abstract
The utility model relates to a fuel steam system for a hybrid electric vehicle. A temperature sensor and a pressure sensor are respectively installed on the top wall of a fuel tank, an oil level sensor is installed in the fuel tank, a control valve is communicated with the fuel tank and a carbon canister, the temperature sensor, the pressure sensor and the oil level sensor respectively access into a signal input terminal of an electronic control unit, the electronic control unit is in signal connection with an engine; and after the parameters of temperature, pressure and volume of the fuel steam are collected by the electronic control unit, the mass of the fuel steam discharged to the carbon canister each time is calculated and accumulated, and when the accumulation amount exceeds the set value, an instruction is given to the engine to clean the carbon canister, and the accumulation amount of the fuel steam returns to zero after the carbon canister is cleaned to enter into the next accumulative period. The fuel steam system can be well adapted for the hybrid electric vehicle adopting an external plug-in charge method, enables the engine to be started in time to clean the carbon canister and further avoids the pollution discharged from the fuel steam.
Description
Technical field
The utility model relates to a kind of vehicle fuel system and makes field, particularly a kind of fuel-steam system of hybrid vehicle.
Background technology
Hybrid vehicle is meant automotive use gasoline driven and two kinds of type of drive of driven by power, good dynamic property, and quantity discharged is low.Along with in short supply day by day, the price continuous rise of oil supply and increasingly sharpening of environmental pollution, hybrid vehicle relies on the advantage of its energy-saving and environmental protection day by day to become the focus that industry is paid close attention to.According to the blend proportion difference of two kinds of different-energies, motor vehicle driven by mixed power has four types, that is: little mixing, slight mixing, full mixing, external power receptacle charging mix.
Because gasoline is volatile, its saturated vapor pressure is bigger, often can reach 70KPa even to 1bar, cause the plastic fuel tank distortion easily under higher ambient temperature.For the fuel-steam pressure in the fuel tank is reduced, the fuel-steam system of traditional hybrid vehicle, take to make the fuel tank top to be communicated with pressure-gradient control valve, the discharge orifice of pressure-gradient control valve leads to charcoal jar or oil gas absorption plant, when the fuel-steam in the fuel tank surpasses certain pressure, open pressure-gradient control valve, the fuel-steam in the casing is constantly absorbed by charcoal jar or oil gas absorption plant, thereby reduce the fuel tank pressure inside.Because the gasoline in the fuel tank still keeps and evaporates, after after a while, reach certain pressure once more, force pressure-gradient control valve to be opened once more, charcoal jar or oil gas absorption plant absorb fuel-steam once more, and the pressure of box house is reduced.So repeatedly, charcoal jar or oil gas absorption plant can be tending towards saturated gradually, can't continue to absorb fuel-steam, at this moment need to open driving engine the charcoal jar is cleaned.
The extrapolation rechargeable hybrid power vehicle is owing to adopt the outside plug type charging, may make driving engine be in closed condition for a long time, can not in time clean the charcoal jar, in the meantime because the fuel-steam in the fuel tank surpasses certain pressure, the tank pressure control cock is opened, and constantly absorbed, cause the charcoal jar may be in saturation conditions by charcoal jar or oil gas absorption plant, can't continue to absorb fuel-steam, can cause fuel steam discharge to arrive external environment and produce pollution.
For improving above situation, the fuel-steam system of present hybrid vehicle, but adopt metal fuel tank or heavy wall plastic fuel tank to improve the bearing pressure of fuel tank, thereby most of oil vapour is kept in the fuel tank, reduce of the discharging of oil vapour hydro-carbon to the charcoal jar.But adopt the fuel tank of high-bearing capacity, still there is gasoline vapor to discharge in a long time to the charcoal jar, it is saturated finally to cause the charcoal jar to absorb, thereby cause the pollution of environment, and owing to the inner bearing pressure of fuel tank changes greatly, may cause fatigue of material to lose efficacy, the fuel tank life-span is had a negative impact.
The utility model content
The technical problems to be solved in the utility model is, a kind of fuel-steam system of hybrid vehicle is provided, when the charcoal jar when saturated, can in time start automotive engine and clean the charcoal jar, the hydro-carbon in the desorption charcoal jar.
For solving this technical problem, the technical solution of the utility model is, a kind of fuel-steam system of hybrid vehicle is provided, comprise fuel tank, fuel level sensor and charcoal jar, fuel level sensor is positioned at fuel tank, the top of fuel tank is connected by pipeline with the charcoal jar, this pipeline is provided with control cock, this fuel-steam system also is provided with the temperature sensor of measuring the fuel-steam temperature and pressure, pressure sensor and electronic control unit, electronic control unit is according to oil vapour pressure, temperature, volumetric parameter calculating is arranged to the oil vapour quality of charcoal jar and is added up, temperature sensor and pressure sensor are installed in respectively on the roof of fuel tank, temperature sensor, pressure sensor and fuel level sensor insert the signal input part of electronic control unit respectively, electronic control unit compares according to the oil vapour quality and the setting value of discharging, sends the signal control automobile engine starting and cleans the charcoal jar.
Control cock can be pressure-gradient control valve.Oil vapour pressure in fuel tank is during greater than setting value, and pressure-gradient control valve is opened automatically, makes oil vapour row to the charcoal jar; When oil vapour pressure during less than setting value, pressure-gradient control valve cuts off automatically.
Control cock can also be electromagnetic valve, and this electromagnetic valve is controlled by an electronic control unit its break-make.The break-make of electronic control unit controls electromagnetic valve makes pressure control more flexible, in refueling process, can open electromagnetic valve, makes oil vapour row to the charcoal jar.
Described temperature sensor and pressure sensor can be integrated in the module.So not only can reduced volume, can also reduce the perforate on the fuel tank.
With respect to prior art, the utility model is obtained following beneficial effect, the oil level signal that provides from fuel level sensor can obtain the volume of oil vapour, after electronic control unit obtains the parameter of temperature, pressure, volume of oil vapour, calculate each opening controlling valve drain into the charcoal jar oil vapour quality and add up, warning is in time also sent instruction to automotive engine the charcoal jar is cleaned, avoid the saturated and fuel steam discharge of charcoal jar to produce and pollute, and can provide certain density gasoline vapor to improve the utilization ratio of fuel oil to driving engine to external environment.
Description of drawings
Fig. 1 is the scheme drawing of fuel-steam first kind of embodiment of system of the present utility model.
Fig. 2 is the scheme drawing of fuel-steam second kind of embodiment of system of the present utility model.
Among the figure: 1 fuel tank, 2 fuel level sensors, 3 temperature sensors, 4 pressure sensors, 5 electronic control units, 6 upset shutoff valves, 7a pressure-gradient control valve, 7b electromagnetic valve, 8 driving engines, 9 charcoal jars.
The specific embodiment
Figure 1 shows that first kind of embodiment of the utility model fuel-steam system, the fuel-steam system of this hybrid vehicle comprises fuel tank 1, is installed in temperature sensor 3, pressure sensor 4 and upset shutoff valve 6 on fuel tank 1 roof, and fuel level sensor 2 is positioned at fuel tank.The end of pressure-gradient control valve 7a is connected with upset shutoff valve 6, and the other end is connected with charcoal jar 9, and when fuel tank 1 was inverted, upset shutoff valve 6 cut off the path of fuel tank 1 with pressure-gradient control valve 7a.Temperature sensor 3, pressure sensor 4 and fuel level sensor 2 insert the signal input part of electronic control unit 5 respectively, and electronic control unit 5 can send signal control automotive engine 8 and start.Temperature sensor 3 can adopt thermister sensor or vehicle-mounted temperature sensor, and pressure sensor 4 can adopt OBD II sensor, also temperature sensor and pressure sensor can be able to be integrated in the module.
The desorption cleaning process of charcoal jar 9 should be fully, and according to the volume size of charcoal jar, the air that feeding is several times as much as its volume cleans, and cleans the back and contains the air of certain gasoline concentration to driving engine 8 supplies, and kill engine when cleaning end fully.Then all Information Monitorings and calculating are made zero, the sequential monitoring and the electronic control unit accumulation that reenter the next cycle are calculated, and carry out so again and again.
Figure 2 shows that second kind of embodiment of the utility model fuel-steam system, this embodiment changes the pressure-gradient control valve 7a among first kind of embodiment into and adopts electromagnetic valve 7b, and by electronic control unit 5 its break-makes of control, all the other are identical with first kind of implementation method.Adopt electromagnetic valve 7b to make pressure control more flexible.The manner can be used for the vehicle-mounted oiling vapor-recovery system of North America, be the ORVR system, in refueling process, can open electromagnetic valve 7b to charcoal jar discharging oil vapour, electronic control unit changes by oil mass and pressure and temperature at that time calculates the oil vapour quality, is used to control the cleaning of charcoal jar.This embodiment can also be installed on electromagnetic valve 7b the discharge side place of charcoal jar, and the top of fuel tank directly is communicated with the import of charcoal jar.
This fuel-steam system can be used on the outside plug type hybrid vehicle, also can be used for the hybrid vehicle of other type.
By the charcoal jar effectively the collection and the calculating of the oil vapour quality of absorption be technological core of the present utility model, also be the theoretical basis of sequential monitoring, according to density equation and The Ideal-Gas Equation:
ρ＝m/V
PV＝nRT
In the formula: ρ is a vapour density, and m is the oil vapour quality, and V is the oil vapour volume, and P is the fuel tank internal vapour pressure, and R is a gas constant, and its value is 8.314J/ (molk); T is an absolute temperature.
After certain opening and closing of control cock, the loss of fuel tank interior oil steam is the oil vapour that is absorbed by the charcoal jar, and the oil vapour volume in the fuel tank is instant oil vapour space.
If the oil vapour pressure, volume, temperature in the fuel tank before the discharging is respectively P
1, V
1, T
1, the oil vapour pressure, volume, temperature of discharging fuel tank is respectively P ', V ', T ', and the oil vapour pressure, volume, temperature in the fuel tank of discharging back is respectively P
2, V
2, T
2Then
P’V’/T’＝P
1V
1/T
1-P
2V
2/T
2
This formula is variable to be changed to:
V’＝(P
1V
1/T
1-P
2V
2/T
2)T’/P’
Temperature sensor can be measured the concrete numerical value of oil vapour temperature before and after discharging, can be similar to think do not have to change, i.e. T
1=T '=T
2, then:
V’＝(P
1V
1-P
2V
2)/P’
And the oil vapour pressure P that is excluded ' and remaining oil vapour pressure P
2Almost be identical, can draw the concrete numerical value of the oil vapour volume V ' that discharges casing thus:
V’＝(P
1V
1-P
2V
2)/P
2
The fuel-steam quality of discharging owing to current control cock opening and closing in the fuel tank of this moment can be obtained:
m
n＝V’×ρ
Instant oil vapour density p after control cock is closed is accessed in the corresponding characteristic curve from storage space by electronic control unit, and the influence factor of density is pressure P and temperature T, and carries out this computation process by electronic control unit.
So far can judge the quality loss of the fuel-steam in the one-period, electronic control unit continues to carry out the monitoring and the program computation process in next cycle, and carries out accumulating operation, when adding up the oil vapour quality greater than setting value, sends clear instruction.
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (4)
1. the fuel-steam system of a hybrid vehicle, comprise fuel tank, fuel level sensor and charcoal jar, fuel level sensor is positioned at fuel tank, the top of fuel tank is connected by pipeline with the charcoal jar, this pipeline is provided with control cock, it is characterized in that, this fuel-steam system also is provided with the temperature sensor of measuring the fuel-steam temperature and pressure, pressure sensor and electronic control unit, electronic control unit is according to oil vapour pressure, temperature, volumetric parameter calculating is arranged to the oil vapour quality of charcoal jar and is added up, temperature sensor and pressure sensor are installed in respectively on the roof of fuel tank, temperature sensor, pressure sensor and fuel level sensor insert the signal input part of electronic control unit respectively, electronic control unit compares according to the oil vapour quality and the setting value of discharging, sends the signal control automobile engine starting and cleans the charcoal jar.
2. the fuel-steam system of hybrid vehicle according to claim 1 is characterized in that, described control cock is a pressure-gradient control valve.
3. the fuel-steam system of hybrid vehicle according to claim 1 is characterized in that, described control cock is an electromagnetic valve, and this electromagnetic valve is controlled by an electronic control unit its break-make.
4. according to the fuel-steam system of claim 1,2 or 3 described hybrid vehicles, it is characterized in that described temperature sensor and pressure sensor are integrated in the module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202363593U CN201511812U (en) | 2009-09-28 | 2009-09-28 | Fuel steam system for hybrid electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202363593U CN201511812U (en) | 2009-09-28 | 2009-09-28 | Fuel steam system for hybrid electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201511812U true CN201511812U (en) | 2010-06-23 |
Family
ID=42483214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202363593U Expired - Lifetime CN201511812U (en) | 2009-09-28 | 2009-09-28 | Fuel steam system for hybrid electric vehicle |
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| CN (1) | CN201511812U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032078A (en) * | 2010-12-16 | 2011-04-27 | 力帆实业(集团)股份有限公司 | Internal fuel steam collector with floating fuel tank |
| CN102114769A (en) * | 2011-01-28 | 2011-07-06 | 亚普汽车部件有限公司 | Fuel steam control system and method of externally plugged electric oil-electricity power vehicle |
| CN101670778B (en) * | 2009-09-28 | 2013-01-09 | 亚普汽车部件股份有限公司 | Fuel steam control system and control method of hybrid electric vehicle |
| CN103161617A (en) * | 2011-12-15 | 2013-06-19 | 北汽福田汽车股份有限公司 | Fuel evaporation control method of car, fuel evaporation control system of car and car |
| CN104535938A (en) * | 2015-01-29 | 2015-04-22 | 四川诚邦测控技术有限公司 | New energy power integrated test system based on oil-electricity combination driving |
| CN105531140A (en) * | 2013-06-26 | 2016-04-27 | 全耐塑料高级创新研究公司 | Method and system for depressurizing a vehicle fuel storage system |
| US9376989B2 (en) | 2013-07-17 | 2016-06-28 | Ford Global Technologies, Llc | Fuel tank pressure relief valve cleaning |
| CN104454255B (en) * | 2013-09-18 | 2017-09-15 | 北汽福田汽车股份有限公司 | Fuel evaporation control system and control method for automobile |
| CN108104983A (en) * | 2017-12-13 | 2018-06-01 | 江苏金坛大迈汽车工程研究院有限公司 | Hybrid vehicle fuel evaporation control system |
| CN109552027A (en) * | 2019-01-24 | 2019-04-02 | 朱超 | A kind of automatically controlled fuel system |
| CN112901360A (en) * | 2019-12-04 | 2021-06-04 | 联合汽车电子有限公司 | Carbon canister load control method, carbon canister load control device and computer readable storage medium |
| CN114532935A (en) * | 2021-12-16 | 2022-05-27 | 宁波方太厨具有限公司 | Tableware condition judging method, washing method of washing machine and washing machine |
-
2009
- 2009-09-28 CN CN2009202363593U patent/CN201511812U/en not_active Expired - Lifetime
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101670778B (en) * | 2009-09-28 | 2013-01-09 | 亚普汽车部件股份有限公司 | Fuel steam control system and control method of hybrid electric vehicle |
| CN102032078B (en) * | 2010-12-16 | 2012-07-04 | 力帆实业(集团)股份有限公司 | Internal fuel steam collector with floating fuel tank |
| CN102032078A (en) * | 2010-12-16 | 2011-04-27 | 力帆实业(集团)股份有限公司 | Internal fuel steam collector with floating fuel tank |
| CN102114769A (en) * | 2011-01-28 | 2011-07-06 | 亚普汽车部件有限公司 | Fuel steam control system and method of externally plugged electric oil-electricity power vehicle |
| CN103161617A (en) * | 2011-12-15 | 2013-06-19 | 北汽福田汽车股份有限公司 | Fuel evaporation control method of car, fuel evaporation control system of car and car |
| CN103161617B (en) * | 2011-12-15 | 2016-01-13 | 北汽福田汽车股份有限公司 | The fuel evaporation controlling method of automobile, system and automobile |
| CN105531140B (en) * | 2013-06-26 | 2018-05-15 | 全耐塑料高级创新研究公司 | Method and system for depressurizing a vehicle fuel storage system |
| US10675969B2 (en) | 2013-06-26 | 2020-06-09 | Plastic Omnium Advanced Ennovation And Research | Method and system for depressurizing a vehicular fuel storage system |
| CN105531140A (en) * | 2013-06-26 | 2016-04-27 | 全耐塑料高级创新研究公司 | Method and system for depressurizing a vehicle fuel storage system |
| US9376989B2 (en) | 2013-07-17 | 2016-06-28 | Ford Global Technologies, Llc | Fuel tank pressure relief valve cleaning |
| CN104454255B (en) * | 2013-09-18 | 2017-09-15 | 北汽福田汽车股份有限公司 | Fuel evaporation control system and control method for automobile |
| CN104535938B (en) * | 2015-01-29 | 2017-05-10 | 四川诚邦测控技术有限公司 | New energy power integrated test system based on oil-electricity combination driving |
| CN104535938A (en) * | 2015-01-29 | 2015-04-22 | 四川诚邦测控技术有限公司 | New energy power integrated test system based on oil-electricity combination driving |
| CN108104983A (en) * | 2017-12-13 | 2018-06-01 | 江苏金坛大迈汽车工程研究院有限公司 | Hybrid vehicle fuel evaporation control system |
| CN109552027A (en) * | 2019-01-24 | 2019-04-02 | 朱超 | A kind of automatically controlled fuel system |
| CN109552027B (en) * | 2019-01-24 | 2023-10-27 | 安徽尼威汽车动力系统有限公司 | Electronically controlled fuel system |
| CN112901360A (en) * | 2019-12-04 | 2021-06-04 | 联合汽车电子有限公司 | Carbon canister load control method, carbon canister load control device and computer readable storage medium |
| CN114532935A (en) * | 2021-12-16 | 2022-05-27 | 宁波方太厨具有限公司 | Tableware condition judging method, washing method of washing machine and washing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 225009 Yangzhou Jiangnan Road, No. 508, Jiangsu, China Patentee after: Yapp Automotive Parts Co.,Ltd. Address before: 225009 Yangzhou Jiangnan Road, No. 508, Jiangsu, China Patentee before: YAPP Automotive Parts Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20100623 Effective date of abandoning: 20090928 |
|
| RGAV | Abandon patent right to avoid regrant |