CN207790317U - A kind of new-type electric control fuel system - Google Patents
A kind of new-type electric control fuel system Download PDFInfo
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- CN207790317U CN207790317U CN201721914012.0U CN201721914012U CN207790317U CN 207790317 U CN207790317 U CN 207790317U CN 201721914012 U CN201721914012 U CN 201721914012U CN 207790317 U CN207790317 U CN 207790317U
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Abstract
The utility model is related to a kind of new-type electric control fuel systems, the fuel system includes oil tank body, canister, oil fuel tube, oil pump, electric control exhaust valve, blow vent, baroceptor, liquid level sensor, vent line, for/oil return line, control unit and automatically controlled check-valves, the blow vent of the canister and fuel tank internal is connected to by vent line with electric control exhaust valve, electric control exhaust valve is arranged in oil tank body, pressure liquid level sensor is installed on oil tank body bottom, baroceptor is placed at the top of oil tank body, automatically controlled check-valves is installed on oil fuel tube and oil tank body junction, described control unit is communicated using the form of CAN bus with vehicle ECU；The Technical Design is ingenious, compact-sized, the program utilize electric control valve rapidity and high sensitivity, Quick air-discharge control internal pressure, promoted oiling smoothness, elimination regurgitate, it is counter emerge in large numbers as.
Description
Technical field
The present invention relates to a kind of fuel systems, and in particular to a kind of new-type electric control fuel system belongs to Oiltank structure component
Technical field.
Background technology
Fuel system is a part for automobile chassis or power assembly system, and major function is provided for automobile engine
Fuel oil, fuel system can be divided into four modules by function, be fuel oil memory module, fuel oil sending module, vapor management respectively
Module measures control module.
During automobile fuel filler, it is desirable that the steam in fuel tank drains into canister by pipeline and carries out desorption processing, refuels extremely
When automatic jump rifle, the fuel oil volume in fuel tank meets the requirements.Current fuel system uses " fluid level control valve " a certain specific
Height closes cut-out exhaust, so that refueling nozzle is jumped rifle automatically, the liquid level (filling volume) of oiling is controlled with this, in difference
Fuel tank in need to set different " closing height ".
During running car or parking, need fuel system can under various operating modes trim tank external and internal pressure,
Fuel leakage is avoided, such as situations such as tilting of automobile, rollover and fuel oil expanded by heating, contract on cooling.Fuel system by valve into
Row exhaust and tonifying Qi, are completely closed under specific circumstances, prevent fuel leakage.
In addition, fuel system conveys fuel oil to engine by oil pump, and using in liquid level sensor monitoring fuel tank
Fuel Oil Remaining.
Conventional fuel oil system system has the following problems：1) oiling aspect of performance：Fuel oil enters fuel tank by oil fuel tube, with
The progress of oiling, fuel tank internal liquid level increase, the steam of box house by each valve through vent line be discharged into canister into
Row desorption, when oil level reaches the closing height of fluid level control valve, since liquid is to the buoyancy of valve internal float, valve closes
It closes, tank internal pressure increases at this time, and fuel oil can not continue to inject, and refueling nozzle jumps rifle；After refueling nozzle jumps rifle for the first time, in fuel tank
Portion's high pressure gas is slowly discharged by weight valve, when tank internal pressure drops to certain numerical value, be can proceed with and is added, adds
After certain fuel oil, fuel tank internal pressure increases again, and refueling nozzle jumps rifle again, then repeats adding to a full volume left side for certain number
The right side is slow due to after refueling nozzle jumps rifle for the first time, being discharged by weight valve tank internal pressure, when adding because of liquid fuel
Impact can occur regurgitating, anti-phenomena such as gushing in oil filler.And the control of volume is filled by the closing of fluid level control valve, is deposited
There is different closing requirement for height in the fuel tank of certain error, and different model, valve need to be redesigned；2) working performance side
Face, for automobile in traveling or parking, the internal pressure of fuel tank may be below or above external pressure, and too low or excessively high is interior
Pressure can all cause plastic fuel tank to be deformed, it is therefore desirable to fuel tank internal be exhausted and tonifying Qi.Simultaneously because automobile is in work
As when be likely to be under a variety of different road conditions, it is therefore desirable to fuel system can be normally vented at each occurrence
And tonifying Qi.In addition, fuel system also needs to the Fuel Remained amount in fuel tank feeding back to vehicle ECU, by numerical response in instrument
On disk.Conventional fuel oil system is in normally open when no fuel oil submerges due to using mechanical valve, and valve is logical
Air pipe is connected to canister, thus vehicle dynamic when driving, there are certain dynamic leakage amounts, and system pipeline cannot be led
Dynamic closing is opened, and can not be applied in high-pressure system environment, additionally due to valve may be because that vehicle body shakes caused fuel oil
It impacts and closes, therefore there is the requirement for reopening pressure, the fuel oil volumetric measurement of conventional fuel oil system relies on float liquid level
Sensor realizes that resolution ratio is low, and there are larger errors；3) in terms of security performance：When vehicle topples or overturns, Fuel System
System, which will be closed, avoids fuel leakage from causing the accident, and the mechanical valve in conventional fuel oil system has the performance parameter of closing angle,
It can be immediately closed off when there is the unexpected situation overturned.Therefore, traditional fuel tank system is primarily present oiling smoothness deficiency,
When adding exist regurgitate, anti-phenomena such as gushing；Volumetric void fraction and liquid level show not accurate enough；There is dynamic leakage when driving；It cannot
The problems such as compatible high-pressure fuel oil system.Therefore, there is an urgent need for a kind of new schemes to solve the technical problem.
Invention content
The present invention exactly for the technical problems in the prior art, provides a kind of new-type electric control fuel system, the skill
Art conceptual design is ingenious, compact-sized, the program utilize electric control valve rapidity and high sensitivity, Quick air-discharge control in
Pressure, promoted oiling smoothness, elimination regurgitate, it is counter emerge in large numbers as.
To achieve the goals above, technical scheme is as follows, a kind of new-type electric control fuel system, the Fuel System
System includes oil tank body, canister, oil fuel tube, oil pump, electric control exhaust valve, blow vent, baroceptor, liquid level sensor, ventilation
Pipeline, for/oil return line, control unit and automatically controlled check-valves, the fuel oil storage of fuel system, fuel oil are sent, steam
Management measures four modules of control, and the program mainly makes improvement to the performance of fuel oil storage, vapor management and measurement control,
The blow vent of the canister and fuel tank internal is connected to by vent line with electric control exhaust valve, and electric control exhaust valve is arranged in fuel tank
In ontology, can freely it be arranged according to the concrete shape of fuel tank and space；Pressure liquid level sensor is installed on oil tank body bottom,
Baroceptor is placed at the top of oil tank body, and the arrangement of oil pump is similar with conventional fuel oil system；Automatically controlled check-valves is installed on oiling
Pipe and oil tank body junction, described control unit are communicated using the form of CAN bus with vehicle ECU.
As an improvement of the present invention, the knot that the electric control exhaust valve is combined using electromagnetic valve and mechanical valve
Structure makes it have exhaust and the roads drain Liang Gefa flow direction, and electromagnetic valve module and mechanical valve module all have two-stage and open
Open pattern.Electromagnetic valve is big flow and small flow rate mode, controls ventilatory capacity；Mechanical valve module closed state is simultaneously
The interface of the leakage fluid dram and valve and the blow vent towards canister of valve and fuel tank is closed, level-one open state is to close valve
With the leakage fluid dram of fuel tank, prevent fuel oil from entering canister, the interface of Open valve and the blow vent towards canister through valve, two level is opened
The state of opening is the interface of the leakage fluid dram and valve and the blow vent towards canister that open simultaneously valve and fuel tank.
As an improvement of the present invention, the liquid level sensor using piezoresistive pressure sensor as measurement phase part,
Pressure measurement is carried out using foil gauge (DMS) method.Select silicon sheet as DMS, using metal (steel) as film, pressure sensor
The signal of generation is passed to electronic control unit after temperature-compensating, in conjunction with the air pressure inside signal that baroceptor measures, leads to
It crosses Algorithm Analysis and obtains accurate fuel liquid level information.The fuel tank of different model need to only determine the installation site of sensor, utilize
Algorithm carries out liquid level calibration, according to Oiltank structure and not close height design valve again as conventional fuel oil system.
Compared with the existing technology, the invention has the advantages that, 1) the technical solution overall construction design is compact, ingenious,
The program can improve the performance and quality of fuel system：2) technical solution utilizes the rapidity of electric control valve and highly sensitive
Degree, Quick air-discharge control internal pressure, promote oiling smoothness, and elimination is regurgitated, counter gushed；3) program is accurate using pressure liquid level sensor
Really control filling volume, measurement liquid level；4) actively opening and closing is not limited the electric control valve of the technical solution by liquid level, is reduced dynamic and is let out
Dew；5) program can active isolation fuel tank and canister, compatible high-pressure fuel oil system, and OBD can be assisted to detect, 6) entire technical side
Case cost is relatively low, is promoted and applied convenient for further.
Description of the drawings
Fig. 1 is overall structure of the present invention；
Fig. 2 a are electric control exhaust valve level-one open state schematic diagram；
Fig. 2 b are electric control exhaust valve two level open state schematic diagram；
Fig. 3 is fueling state schematic diagram；
Fig. 4 is to jump rifle status diagram；
Fig. 5 is heeling condition schematic diagram when fuel tank works；
Fig. 6 is to restore normal attitude schematic diagram by tilting；
Fig. 7 is that fuel tank topples status diagram；
Fig. 8 is fuel tank isolation schematic diagram.
In figure：1, fuel tank ontology, 2, canister, 3, oil fuel tube, 4, oil pump, 5, electric control exhaust valve, 6, blow vent, 7, air pressure
Sensor, 8, liquid level sensor, 9, vent line, 10, for/oil return line, 11, electronic control unit, 12, automatically controlled check-valves.
Specific implementation mode：
In order to deepen the understanding of the present invention, the present embodiment is described in detail below in conjunction with the accompanying drawings.
Embodiment 1：Referring to Fig. 1, Fig. 2, a kind of new-type electric control fuel system, the fuel system includes oil tank body 1, carbon
Tank 2, oil fuel tube 3, oil pump 4, electric control exhaust valve 5, blow vent 6, baroceptor 7, liquid level sensor 8, vent line 9, for/return
Oil pipe line 10, control unit 11 and automatically controlled check-valves 12, for the fuel oil storage of fuel system, fuel oil transmission, vapor management,
Four modules of control are measured, the program mainly makes improvement, the carbon to the performance of fuel oil storage, vapor management and measurement control
The blow vent 6 of tank 2 and fuel tank internal is connected to by vent line 9 with electric control exhaust valve 5, and electric control exhaust valve 5 is arranged in fuel tank
In ontology 1, can freely it be arranged according to the concrete shape of fuel tank and space；Pressure liquid level sensor 8 is installed on oil tank body bottom
Portion, baroceptor 7 are placed at the top of oil tank body, and the arrangement of oil pump is similar with conventional fuel oil system；Automatically controlled check-valves 12 is installed
In oil fuel tube 3 and oil tank body junction, described control unit 11 is communicated using the form of CAN bus with vehicle ECU.It should
Scheme utilizes the rapidity and high sensitivity of electric control valve, active isolation fuel tank and canister, is compatible with high-pressure fuel oil system, and can be auxiliary
OBD is helped to detect, the program accurately controls filling volume using pressure liquid level sensor, measures liquid level.
Embodiment 2：Referring to Fig. 1, as an improvement of the present invention, the electric control exhaust valve 5 using electromagnetic valve and
The structure of mechanical valve combination makes it have exhaust and the roads drain Liang Gefa flow direction, electromagnetic valve module and mechanical valve
Door module all has two-stage open mode.Electromagnetic valve is big flow and small flow rate mode, controls ventilatory capacity；Mechanical valve
Module closed state is the interface of the leakage fluid dram and valve and the blow vent towards canister that simultaneously close off valve and fuel tank, level-one
Open state is to close the leakage fluid dram of valve and fuel tank, prevents fuel oil from entering canister through valve, Open valve with towards canister
The interface of blow vent, two level open state be open simultaneously valve and fuel tank leakage fluid dram and valve with towards canister ventilation
The interface of mouth, as shown in Fig. 2 a, 2b.The technical solution utilizes the rapidity and high sensitivity of electric control valve, Quick air-discharge control
Internal pressure, promotes oiling smoothness, and elimination is regurgitated, counter gushed；Remaining structure and advantage are identical with embodiment 1.
Embodiment 3：As an improvement of the present invention, the liquid level sensor 8 uses piezoresistive pressure sensor conduct
Measurement phase part carries out pressure measurement using foil gauge (DMS) method.Select silicon sheet as DMS, using metal (steel) as film,
The signal that pressure sensor generates is passed to electronic control unit, the inside gas measured in conjunction with baroceptor after temperature-compensating
Signal is pressed, accurate fuel liquid level information is obtained by Algorithm Analysis.The fuel tank of different model need to only determine the installation of sensor
Position carries out liquid level calibration using algorithm, according to Oiltank structure and not close height valve design again as conventional fuel oil system
Door.Remaining structure and advantage are identical with embodiment 1.
The course of work：
It is the overall structure diagram of the present invention referring to Fig. 1-Fig. 8, shown in Fig. 1, fuel tank ontology 1 plays storage fuel oil
Fuel oil is added by filler pipe 3 in automobile fuel filler in effect, as liquid level rises the steam inside fuel tank 1 by blow vent 6,
It is desorbed into canister 2 by vent line 9 and electric control exhaust valve 5；When the oil level in babinet reaches setting value, control is single
Member 11 receives the signal of baroceptor 7 and liquid level sensor 8, determines, and controls the closing of automatically controlled check-valves 12, refueling nozzle
Rifle is jumped, subsequent automatically controlled check-valves 12, which is actively opened, to be added, and the closing realization for jumping rifle again by automatically controlled check-valves 12 is added.
When automotive service, fuel oil is pumped out by oil pump 4 and conveys fuel oil to automobile dynamic system through fuel feed pump 10.This process itself is known.
When automotive service, the pressure change in oil tank body 1 is monitored by baroceptor 7, by being opened and closed electric control exhaust valve 5 through ventilation
Pipeline 9 carries out positive pressure ventilation and negative pressure tonifying Qi, and the Fuel Oil Remaining in oil tank body 1 detects internal liquid by liquid level sensor 8
Pressure feedback obtains remaining oil magnitude to electronic control unit 11 after carrying out air pressure inside compensation by the signal of baroceptor 7.System
System avoids fuel oil caused by being travelled in inclination of vehicle or dynamic by the opening and closing of 11 active control electric control exhaust valve 5 of control unit
Leakage, the fuel oil that internal ventilation pipeline 9 is entered by blow vent 6 are discharged by the leakage fluid dram 13 in electric control exhaust valve.Occur in automobile
When toppling or overturning, all electric control valves actively close, including all electromagnetism valve ports of electric control exhaust valve 5 and automatically controlled check-valves
12, while mechanical safety valve is integrated in electric control exhaust valve 5, it avoids occurring when power blackout situation solenoid valve can not act
Leakage, when applied to pressure-oil tank environment, system can actively close electric control exhaust valve 5, isolation oil tank body 1 and canister 2, together
When can be used for assist OBD detection.
The new-type electric control fuel system prevailing operating state is as follows,
1) fueling state, referring to Fig. 3, the program measures liquid level when refueling using hydrostatic sensor 8, oil filler
Check valve design can set refueling altitude H at electric control valve in the electronic control unit of vehicle；Electric control exhaust valve is normally open valve
Door, is designed to two kinds of ventilating modes of big flow and small flow, and when oiling is in big flow pattern Quick air-discharge, automatically controlled when refueling
Check-valves 12 is opened, and fuel oil enters oil tank body 1 by oil fuel tube, and internal gas is entered by blow vent 6 through electric control exhaust valve 12
In canister 2；When refueling altitude reaches setting value H, the signal of pressure liquid level sensor 8 through 11 analysis of electronic control unit at
Reason, can control automatically controlled closure of check ring, and fuel oil can not be entered fuel tank by oil fuel tube, and refueling nozzle jumps rifle, referring to Fig. 4, and meanwhile it is automatically controlled
Air bleeding valve is switched to small flow rate mode；Automatically controlled check-valves is again turned on after jumping rifle for the first time to be added, according to the gas in fuel tank
Pressure and liquid level information control additional amount, and close automatically controlled check-valves, and process is added in repetition, and 1s is divided between adding every time；Due to logical
Cross electric control exhaust valve and actively carry out Quick air-discharge, can eliminate occur when oiling regurgitate, it is counter emerge in large numbers as, promoted fuel oil it is smooth
Property；Liquid level is carried out using pressure liquid level sensor and volumetric measurement improves the precision of measurement.
2) working condition, Fig. 5 is fuel tank heeling condition figure, Fig. 6 is to restore normal attitude by tilting, in running car or
When parking, electric control fuel system detects the pressure of fuel tank internal by baroceptor 7, and can be set in electronic control unit
One threshold value, when tank internal pressure is too high or too low, by electric control exhaust valve be exhausted with negative pressure tonifying Qi, system is from whole
Vehicle obtains the attitude signal of automobile, obtains the information of fuel tank heeling condition and the dynamic transport condition of vehicle, passes through automatically controlled row
The opening and closing of air valve prevents fuel admission valve door and avoids dynamic leakage, according to the Fuel Oil Remaining and fuel tank in the fuel tank measured
Lateral attitude, control unit 11 may determine that the blow vent currently submerged by fuel oil, and corresponding electrically-controlled valve nozzle can be immediately
It closes；According to instantaneous acceleration when running car, for example accelerate, brake, take a sudden turn, it is short that control unit can control electric control exhaust valve
It temporarily closes, to avoid the generation of dynamic leakage.Since body sway and dynamic traveling cause on a small quantity into the fuel oil in valve
It is discharged into fuel tank by the mechanical valve module in electric control exhaust valve.
3. security performance, topples status diagram referring to Fig. 7 fuel tanks, the knot of mechanical safety valve is added in the program
Structure, the mechanical valve module in electric control exhaust valve is in the completely closed state when overturning occurs toppling in vehicle, prevents fuel oil
Leakage, while the electromagnetic valve module power-off failure under unexpected state can be prevented.Referring to Fig. 8, fuel tank isolation schematic diagram,
OBD detections can be assisted by actively closing electric control exhaust valve and automatically controlled check-valves in the present invention, close electric control exhaust valve in addition
Fuel tank and canister can be isolated, therefore this electric control fuel system can be adapted for high-pressure fuel oil system.
At least one of examples of implementation 2,3 technical characteristics can also be combined formation newly by the present invention with embodiment 1
Embodiment.
It should be noted that above-described embodiment, protection domain not for the purpose of limiting the invention, in above-mentioned technical proposal
On the basis of made equivalents or replacement each fall within the range that the claims in the present invention are protected.
Claims (3)
1. a kind of new-type electric control fuel system, which is characterized in that the fuel system includes oil tank body, canister, oil fuel tube, oil
Pump, electric control exhaust valve, blow vent, baroceptor, liquid level sensor, vent line, for/oil return line, control unit and
The blow vent of automatically controlled check-valves, the canister and fuel tank internal is connected to by vent line with electric control exhaust valve, electric control exhaust
Valve is arranged in oil tank body, and pressure liquid level sensor is installed on oil tank body bottom, and baroceptor is placed in oil tank body
Top, automatically controlled check-valves are installed on oil fuel tube and oil tank body junction, described control unit using CAN bus form with it is whole
Vehicle ECU is communicated.
2. new-type electric control fuel system according to claim 1, which is characterized in that the electric control exhaust valve uses electromagnetic type
The structure of valve and mechanical valve combination makes it have exhaust and the roads drain Liang Gefa flow direction, electromagnetic valve module and machine
Tool formula valve module all has two-stage open mode.
3. new-type electric control fuel system according to claim 2, which is characterized in that the liquid level sensor uses pressure resistance type
Pressure sensor selects silicon sheet as DMS as measurement phase part, using metal as film, the signal of pressure sensor generation
It is passed to electronic control unit after temperature-compensating and passes through Algorithm Analysis in conjunction with the air pressure inside signal that baroceptor measures
Obtain accurate fuel liquid level information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201721914012.0U CN207790317U (en) | 2017-12-31 | 2017-12-31 | A kind of new-type electric control fuel system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721914012.0U CN207790317U (en) | 2017-12-31 | 2017-12-31 | A kind of new-type electric control fuel system |
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| CN207790317U true CN207790317U (en) | 2018-08-31 |
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| CN201721914012.0U Active CN207790317U (en) | 2017-12-31 | 2017-12-31 | A kind of new-type electric control fuel system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108407607A (en) * | 2017-12-31 | 2018-08-17 | 亚普汽车部件股份有限公司 | A kind of new-type electric control fuel system |
| CN109552027A (en) * | 2019-01-24 | 2019-04-02 | 朱超 | A kind of automatically controlled fuel system |
| CN114962084A (en) * | 2022-04-26 | 2022-08-30 | 一汽奔腾轿车有限公司 | Fuel evaporation emission control system and control method for hybrid vehicle and application of fuel evaporation emission control system |
| CN114962084B (en) * | 2022-04-26 | 2024-05-14 | 一汽奔腾轿车有限公司 | Fuel evaporation and emission control system and control method for hybrid electric vehicle and application of fuel evaporation and emission control system and control method |
-
2017
- 2017-12-31 CN CN201721914012.0U patent/CN207790317U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108407607A (en) * | 2017-12-31 | 2018-08-17 | 亚普汽车部件股份有限公司 | A kind of new-type electric control fuel 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 |
| CN114962084A (en) * | 2022-04-26 | 2022-08-30 | 一汽奔腾轿车有限公司 | Fuel evaporation emission control system and control method for hybrid vehicle and application of fuel evaporation emission control system |
| CN114962084B (en) * | 2022-04-26 | 2024-05-14 | 一汽奔腾轿车有限公司 | Fuel evaporation and emission control system and control method for hybrid electric vehicle and application of fuel evaporation and emission control system and control method |
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