CN113653583A - Range-extended national six-gasoline fuel system and control method thereof - Google Patents
Range-extended national six-gasoline fuel system and control method thereof Download PDFInfo
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- CN113653583A CN113653583A CN202110806229.4A CN202110806229A CN113653583A CN 113653583 A CN113653583 A CN 113653583A CN 202110806229 A CN202110806229 A CN 202110806229A CN 113653583 A CN113653583 A CN 113653583A
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- 239000000446 fuel Substances 0.000 title claims abstract description 177
- 239000003502 gasoline Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 116
- 239000002828 fuel tank Substances 0.000 claims abstract description 74
- 238000003745 diagnosis Methods 0.000 claims abstract description 47
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 40
- 238000001514 detection method Methods 0.000 claims description 34
- 238000002955 isolation Methods 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims 3
- 238000012423 maintenance Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 6
- 238000009423 ventilation Methods 0.000 abstract description 5
- 239000003610 charcoal Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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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
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
- F02M65/006—Measuring or detecting fuel leakage of fuel injection apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
- F02B77/083—Safety, indicating, or supervising devices relating to maintenance, e.g. diagnostic device
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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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- 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0076—Details of the fuel feeding system related to the fuel tank
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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)
Abstract
The invention discloses a range-extended national six-fuel gasoline system and a control method thereof, and the system comprises a fuel tank assembly and a gasoline engine assembly, wherein the fuel tank assembly is connected with the gasoline engine assembly through a fuel supply device, the fuel tank assembly is provided with a fuel vapor management device, the gasoline engine assembly is provided with an engine management system, and the fuel vapor management device is electrically connected with the engine management system. According to the invention, the leakage diagnosis of the fuel system is realized through the fuel vapor management device and the engine management system, the leakage diagnosis is performed through the fuel vapor pressure sensor, the activated carbon tank ventilation valve, the common activated carbon tank filter, the carbon tank electromagnetic valve and the like, the cost of a bicycle is reduced, the arrangement difficulty is reduced, and the filter element in the common activated carbon tank filter can be made of sponge materials, so that the equipment is easy to overhaul and maintain, and the after-sale maintenance cost can be effectively reduced.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a stroke-increasing national six-gasoline fuel system and a control method thereof.
Background
With the rise of consumption level of people, environmental protection awareness is gradually raised, the national environmental protection policy is tightened, and the emission limit of pollutants for light automobiles and the mandatory standard of the measurement method (sixth stage of China) in GB 18352.6-2016 are jointly issued by the Ministry of environmental protection in 2016 and the State quality inspection Bureau. The limit values of tail gas emission and evaporative emission are greatly tightened, and simultaneously, the requirements of emission in the refueling process, leakage diagnosis of a fuel system and the like are increased, so that challenges are provided for various host factories and component factories.
The extended range type whole vehicle is one of hybrid power type whole vehicles, and the extended range type national six-gasoline fuel system mainly comprises a fuel supply system, a fuel steam management system and a fuel system leakage diagnosis system. The fuel system leakage diagnosis module commonly adopted at present is a relatively complex and precise electric appliance part, has higher requirements on the installation angle, the arrangement position and the environment of the whole vehicle, and has higher requirements on the filtering efficiency and the accumulated dust holding capacity of the activated carbon canister filter at the rear end under different dust sizes, so that the problems of difficult arrangement, high unit cost and the like are caused.
For example, Chinese patent CN105806571B, published 2019, 3, 8, a vehicle-mounted fuel system leakage detection module and a detection method thereof, wherein one end of the leakage detection module is installed on a vehicle carbon canister, and the other end of the leakage detection module is connected with an air filter; the leakage detection module comprises a shell, a quick socket cover connected in the shell, and a diaphragm, a pressure valve and a vacuum valve which are positioned between the shell and the quick socket cover; the shell is provided with an air filter interface connected with an air filter, and the quick socket cover is provided with a carbon canister interface connected with a vehicle carbon canister; the diaphragm, the pressure valve and the vacuum valve are all fixed on the quick socket cover. The vehicle-mounted fuel system leakage detection module of the invention causes the internal pressure of the fuel system to be increased and decreased to be a basic condition through the thermal expansion and contraction performance of fuel and fuel steam. But it has the fuel system leakage detection module structure complicacy, and the cost is higher scheduling problem.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the leakage detection module of the existing fuel system has the technical problems of high manufacturing cost and difficulty in maintenance and replacement of equipment. Provides a range-extended national six-gasoline fuel system with low manufacturing cost and easy equipment maintenance and control method thereof.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides an increase six petrol fuel systems in form country, includes fuel tank assembly and petrol engine assembly, fuel tank assembly pass through fuel feeding unit with petrol engine assembly connects, be equipped with fuel steam management device on the fuel tank assembly, be equipped with engine management system on the petrol engine assembly, fuel steam management device with the engine management system electricity is connected. The utility model provides an increase six petrol fuel oil systems of form country, realize the leakage diagnosis to fuel oil system through fuel steam management device and engine management system, be equipped with pressure detection device and charcoal jar controlling means in the fuel steam management device, pressure detection device and charcoal jar controlling means all are connected with the engine management system electricity, be convenient for engine management system realizes the control to the charcoal jar valve and carry out fuel oil system's leakage diagnosis through the pressure detection result, the system passes through fuel steam pressure sensor, the active carbon jar ventilation valve, ordinary active carbon jar filter, charcoal jar solenoid valve etc. constitutes and carries out the leakage diagnosis, the bicycle cost is reduced and the reduction arranges the degree of difficulty, and filter core can adopt sponge class material in the ordinary active carbon jar filter, make the equipment easy maintenance, can effectively reduce the after-sale maintenance cost.
Preferably, the fuel vapor management device comprises a fuel vapor pipe assembly, a pressure detection device and a canister control device, the fuel vapor pipe assembly is connected with the fuel tank assembly, and the canister control device is connected with the fuel vapor pipe assembly through the pressure detection device. The fuel steam management device comprises a fuel steam pipe assembly, a pressure detection device and a carbon canister control device, wherein the pressure detection device and the carbon canister control device are electrically connected with the engine management system, so that the engine management system can conveniently control the carbon canister valve and perform leakage diagnosis of the fuel system through a pressure detection result.
Preferably, the canister control device includes an activated carbon canister assembly, an activated carbon canister vent valve, an activated carbon canister filter, and a canister solenoid valve, the activated carbon canister assembly is connected to the activated carbon canister vent valve and the canister solenoid valve, the activated carbon canister filter is connected to the activated carbon canister vent valve, and the activated carbon canister vent valve and the canister solenoid valve are electrically connected to the engine management system. Compared with a special activated carbon canister filter corresponding to the fuel tank leakage diagnosis module, the special activated carbon canister filter can select a common activated carbon canister filter, and a filter element in the activated carbon canister filter can be made of sponge materials, so that the activated carbon canister filter is convenient to replace and maintain.
Preferably, the pressure detection device comprises a high-pressure sensor, a low-pressure sensor and a fuel tank isolation valve, the high-pressure sensor and the low-pressure sensor are respectively located on two sides of the fuel tank isolation valve, the high-pressure sensor is connected with the fuel steam pipe assembly, and the low-pressure sensor is connected with the carbon canister control device. The high pressure sensor and the low pressure sensor are respectively positioned at two sides of the fuel tank isolation valve, namely the high pressure sensor is positioned on a pipeline connecting the fuel tank isolation valve and the fuel steam pipe assembly, and the low pressure sensor is positioned on a pipeline connecting the fuel tank isolation valve and the carbon canister control device, namely the activated carbon canister assembly. The pressure and pressure change condition of the fuel tank isolating valve can be detected conveniently.
Preferably, a fuel tank refueling device is arranged on one side of the fuel tank assembly, which is far away from the fuel vapor management device. The fuel tank refueling device is arranged on one side, far away from the fuel steam management device, of the fuel tank assembly, and interference of the refueling device on the detection device in the fuel steam management device is reduced.
Preferably, the fuel tank refueling device comprises a refueling pipe assembly and a fuel tank cover assembly, one end of the refueling pipe assembly is connected with the fuel tank assembly, and the other end of the refueling pipe assembly is connected with the fuel tank cover assembly. The fuel tank cover assembly is used for sealing the fuel filling pipe assembly after the fuel filling pipe assembly is used for filling fuel into the fuel tank assembly.
Preferably, the fuel supply device comprises a fuel rail, a fuel supply pipe assembly and an electric fuel pump assembly, wherein the fuel rail is located on one side of the fuel tank assembly close to the gasoline engine assembly, the fuel rail passes through the fuel supply pipe assembly and is connected with the electric fuel pump assembly, and the electric fuel pump assembly is connected with the fuel tank assembly. The fuel rail is positioned on the gasoline engine assembly, the fuel rail is positioned on one side, close to the fuel tank assembly, of the gasoline engine assembly, one part of the electric fuel pump assembly is positioned in the fuel tank assembly, and the fuel tank assembly supplies fuel to the gasoline engine assembly through the fuel rail, the fuel supply pipe assembly and the electric fuel pump assembly.
A control method of a stroke-increasing national six-gasoline fuel system utilizes the system and comprises the following steps:
s1: the engine management system judges whether the fuel system leakage diagnosis condition is met, if yes, the step S2 is carried out, and if not, the step S7 is carried out;
s2: starting to perform leakage diagnosis on the fuel system;
s3: the engine management system respectively controls the carbon canister electromagnetic valve and the activated carbon canister vent valve to operate;
s4: the engine management system reads a voltage signal of the fuel vapor pressure sensor and converts the voltage signal into a fuel vapor pressure signal;
s5: the engine management system compares the change curve of the fuel vapor pressure value with a calibrated threshold value, and records and stores the comparison result;
s6: the carbon canister electromagnetic valve and the active carbon canister vent valve are restored to the original state;
s7: and ending the leakage diagnosis. The engine management system can be set to send leakage diagnosis requests or leakage diagnosis instructions at intervals of a certain period t, then the engine management system judges whether the leakage diagnosis conditions of the fuel system are met or not according to the working conditions and the boundary conditions of the whole vehicle, and when the engine management system judges that the leakage diagnosis conditions of the fuel system are not met according to the working conditions and the boundary conditions of the whole vehicle, the leakage diagnosis of the fuel system is stopped; and if the engine management system judges that the leakage diagnosis condition of the fuel system is met according to the working condition and the boundary condition of the whole vehicle, starting to enter the leakage diagnosis process of the fuel system.
After entering a fuel system leakage diagnosis process, an engine management system respectively controls a carbon canister electromagnetic valve and an activated carbon canister vent valve to be opened or closed at a proper time through hard wires; the engine management system reads a voltage signal of the fuel vapor pressure sensor through a hard line and converts the voltage signal into a fuel vapor pressure signal through calculation; the engine management system compares the change curve of the fuel vapor pressure value with a calibrated threshold value; and storing or uploading the comparison result record, and if the error between the pressure value change curve and the calibrated threshold value is too large, starting an alarm system and stopping oil supply of the fuel tank in time. If the error between the pressure value change curve and the calibrated threshold value is small, after the comparison result is recorded and stored or uploaded, the engine management system issues a leakage quitting diagnosis instruction, the carbon canister electromagnetic valve and the activated carbon canister vent valve recover to the original opening or closing state, and the fuel system leakage diagnosis process is finished.
The substantial effects of the invention are as follows: according to the invention, the leakage diagnosis of the fuel system is realized through the fuel vapor management device and the engine management system, the pressure detection device and the carbon tank control device are arranged in the fuel vapor management device, the pressure detection device and the carbon tank control device are both electrically connected with the engine management system, the control of the carbon tank valve is conveniently realized by the engine management system, the leakage diagnosis of the fuel system is carried out through the pressure detection result, the leakage diagnosis is carried out through the system consisting of the fuel vapor pressure sensor, the activated carbon tank ventilation valve, the common activated carbon tank filter, the carbon tank electromagnetic valve and the like, the cost of a bicycle is reduced, the arrangement difficulty is reduced, and the filter element in the common activated carbon tank filter can be made of sponge materials, so that the equipment is easy to overhaul and maintain, and the after-sale maintenance cost can be effectively reduced.
Drawings
FIG. 1 is a schematic structural diagram of the present embodiment;
FIG. 2 is a flowchart illustrating the steps performed in this embodiment.
Wherein: 1. the fuel tank comprises a fuel tank cover assembly, 2, a fuel filling pipe assembly, 3, a fuel tank assembly, 4, an electric fuel pump assembly, 5, a fuel steam pipe assembly, 6, a high-pressure sensor, 7, a fuel tank isolation valve, 8, a low-pressure sensor, 9, an activated carbon tank assembly, 10, an activated carbon tank ventilation valve, 11, an activated carbon tank filter, 12, a carbon tank electromagnetic valve, 13, an engine management system, 14, a gasoline engine assembly, 15, an oil rail, 16 and a fuel supply pipe assembly.
Detailed Description
The following provides a more detailed description of the present invention, with reference to the accompanying drawings.
An extended-range national six-fuel gasoline system is shown in figure 1 and comprises a fuel tank assembly 3 and a gasoline engine assembly 14, wherein the fuel tank assembly 3 is connected with the gasoline engine assembly 14 through a fuel supply device, the fuel supply device comprises a fuel rail 15, a fuel supply pipe assembly 16 and an electric fuel pump assembly 4, the fuel rail 15 is located on one side, close to the fuel tank assembly 3, of the gasoline engine assembly 14, the fuel rail 15 is connected with the electric fuel pump assembly 4 through the fuel supply pipe assembly 16, and the electric fuel pump assembly 4 is connected with the fuel tank assembly 3. The fuel rail 15 is positioned on the gasoline engine assembly 14, the fuel rail 15 is positioned on one side of the gasoline engine assembly 14 close to the fuel tank assembly 3, one part of the electric fuel pump assembly 4 is positioned inside the fuel tank assembly 3, and the fuel tank assembly 3 supplies fuel to the gasoline engine assembly 14 through the fuel rail 15, the fuel supply pipe assembly 16 and the electric fuel pump assembly 4.
A fuel vapor management device is arranged on the fuel tank assembly 3, and a fuel tank refueling device is arranged on one side of the fuel tank assembly 3, which is far away from the fuel vapor management device. The fuel tank refueling device is arranged on one side, far away from the fuel vapor management device, of the fuel tank assembly 3, and interference of the refueling device on a detection device in the fuel vapor management device during refueling is reduced. The fuel tank refueling device comprises a refueling pipe assembly 2 and a fuel tank cover assembly 1, wherein one end of the refueling pipe assembly 2 is connected with a fuel tank assembly 3, and the other end of the refueling pipe assembly 2 is connected with the fuel tank cover assembly 1. The fuel tank assembly 3 is filled with oil through the fuel filling pipe assembly 2, and then the fuel tank cover assembly 1 seals the fuel filling pipe assembly 2.
An engine management system 13 is arranged on the gasoline engine assembly 14, and the fuel steam management device is electrically connected with the engine management system 13. The fuel steam management device comprises a fuel steam pipe assembly 5, a pressure detection device and a carbon canister control device, wherein the pressure detection device comprises a high-pressure sensor 6, a low-pressure sensor 8 and a fuel tank isolation valve 7, the high-pressure sensor 6 and the low-pressure sensor 8 are respectively positioned on two sides of the fuel tank isolation valve 7, the high-pressure sensor 6 is connected with the fuel steam pipe assembly 5, and the low-pressure sensor 8 is connected with the carbon canister control device. The high-pressure sensor 6 and the low-pressure sensor 8 are respectively positioned at two sides of the fuel tank isolation valve 7, namely the high-pressure sensor 6 is positioned on a pipeline connecting the fuel tank isolation valve 7 and the fuel steam pipe assembly 5, and the low-pressure sensor 8 is positioned on a pipeline connecting the fuel tank isolation valve 7 and the carbon canister control device, namely the activated carbon canister assembly 9. It is convenient to detect the pressure of the tank isolation valve 7 and the pressure change. The canister control device comprises an activated canister assembly 9, an activated canister vent valve 10, an activated canister filter 11 and a canister solenoid valve 12, wherein the activated canister assembly 9 is connected with the activated canister vent valve 10 and the canister solenoid valve 12 respectively, the activated canister filter 11 is connected with the activated canister vent valve 10, and the activated canister vent valve 10 and the canister solenoid valve 12 are both electrically connected with an engine management system 13. Compared with the special activated carbon canister filter 11 corresponding to the fuel tank leakage diagnosis module, the common activated carbon canister filter 11 can be selected, and the filter element in the activated carbon canister filter 11 can be made of sponge materials, so that the replacement and maintenance are convenient.
The fuel steam pipe assembly 5 is connected with the fuel tank assembly 3, and the carbon canister control device is connected with the fuel steam pipe assembly 5 through a pressure detection device. The fuel steam management device comprises a fuel steam pipe assembly 5, a pressure detection device and a carbon canister control device, wherein the pressure detection device and the carbon canister control device are electrically connected with an engine management system 13, so that the engine management system 13 can conveniently control a carbon canister valve and perform leakage diagnosis of the fuel system through a pressure detection result.
A control method of a six-gasoline fuel system of extended range type as shown in figure 2 comprises the following steps:
s1: the engine management system 13 judges whether the fuel system leakage diagnosis condition is satisfied, if yes, the process proceeds to step S2, and if not, the process proceeds to step S7;
s2: starting to perform leakage diagnosis on the fuel system;
s3: the engine management system 13 respectively controls the operation of the carbon canister electromagnetic valve 12 and the operation of the activated carbon canister vent valve 10;
s4: the engine management system 13 reads a voltage signal of the fuel vapor pressure sensor and converts the voltage signal into a fuel vapor pressure signal;
s5: the engine management system 13 compares the change curve of the fuel vapor pressure value with a calibrated threshold value, and records and stores the comparison result;
s6: the canister solenoid valve 12 and the activated canister vent valve 10 are restored to the original states;
s7: and ending the leakage diagnosis. The engine management system 13 can be set to send leakage diagnosis requests or leakage diagnosis instructions every certain period t, then the engine management system 13 judges whether the leakage diagnosis conditions of the fuel system are met according to the working conditions and the boundary conditions of the whole vehicle, and when the engine management system 13 judges that the leakage diagnosis conditions of the fuel system are not met according to the working conditions and the boundary conditions of the whole vehicle, the leakage diagnosis of the fuel system is terminated; and if the engine management system 13 judges that the leakage diagnosis condition of the fuel system is met according to the working condition and the boundary condition of the whole vehicle, starting to enter the leakage diagnosis process of the fuel system.
After entering a fuel system leakage diagnosis process, the engine management system 13 respectively controls the carbon canister electromagnetic valve 12 and the activated carbon canister vent valve 10 to be opened or closed at a proper time through hard wires; the engine management system 13 reads a voltage signal of the fuel vapor pressure sensor through a hard line and converts the voltage signal into a signal of the fuel vapor pressure through calculation; the engine management system 13 compares the change curve of the fuel vapor pressure value with a calibrated threshold value; and storing or uploading the comparison result record, and if the error between the pressure value change curve and the calibrated threshold value is too large, starting an alarm system and stopping oil supply of the fuel tank in time. If the error between the pressure value change curve and the calibrated threshold value is small, after the comparison result is recorded and stored or uploaded, the engine management system 13 issues a leakage quitting diagnosis instruction, the carbon canister electromagnetic valve 12 and the activated carbon canister vent valve 10 recover the original opening or closing state, and the fuel system leakage diagnosis process is ended.
According to the embodiment, the leakage diagnosis of the fuel system is realized through the fuel vapor management device and the engine management system 13, the pressure detection device and the carbon tank control device are arranged in the fuel vapor management device, the pressure detection device and the carbon tank control device are both electrically connected with the engine management system 13, the engine management system 13 can conveniently control the carbon tank valve and carry out the leakage diagnosis of the fuel system through a pressure detection result, the system carries out the leakage diagnosis through the composition of the fuel vapor pressure sensor, the activated carbon tank ventilation valve 10, the common activated carbon tank filter 11, the carbon tank electromagnetic valve 12 and the like, the bicycle cost is reduced, the arrangement difficulty is reduced, and a filter element in the common activated carbon tank filter 11 can be made of sponge materials, so that the equipment is easy to overhaul and maintain, and the after-sale maintenance cost can be effectively reduced.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (8)
1. The utility model provides an increase six petrol fuel systems in form country, its characterized in that, includes fuel tank assembly (3) and gasoline engine assembly (14), fuel tank assembly (3) pass through fuel supply unit with gasoline engine assembly (14) are connected, be equipped with fuel steam management device on fuel tank assembly (3), be equipped with engine management system (13) on gasoline engine assembly (14), fuel steam management device with engine management system (13) electricity is connected.
2. The extended-range national six-gasoline fuel system according to claim 1, wherein the fuel vapor management device comprises a fuel vapor pipe assembly (5), a pressure detection device and a canister control device, the fuel vapor pipe assembly (5) is connected with the fuel tank assembly (3), and the canister control device is connected with the fuel vapor pipe assembly (5) through the pressure detection device.
3. The extended-range national six-gasoline fuel system according to claim 2, wherein the canister control device comprises an activated canister assembly (9), an activated canister vent valve (10), an activated canister filter (11), and a canister solenoid valve (12), the activated canister assembly (9) is connected with the activated canister vent valve (10) and the canister solenoid valve (12), the activated canister filter (11) is connected with the activated canister vent valve (10), and the activated canister vent valve (10) and the canister solenoid valve (12) are both electrically connected with the engine management system (13).
4. The extended-range national six-gasoline fuel system according to claim 2 or 3, wherein the pressure detection device comprises a high-pressure sensor (6), a low-pressure sensor (8) and a fuel tank isolation valve (7), the high-pressure sensor (6) and the low-pressure sensor (8) are respectively located on two sides of the fuel tank isolation valve (7), the high-pressure sensor (6) is connected with the fuel steam pipe assembly (5), and the low-pressure sensor (8) is connected with the carbon canister control device.
5. The extended-range national six-gasoline fuel system according to claim 1, wherein a fuel tank refueling device is arranged on a side of the fuel tank assembly (3) away from the fuel vapor management device.
6. The extended-range national six-gasoline fuel system according to claim 1 or 5, wherein the fuel tank refueling device comprises a fuel filler pipe assembly (2) and a fuel tank cover assembly (1), one end of the fuel filler pipe assembly (2) is connected with the fuel tank assembly (3), and the other end of the fuel filler pipe assembly (2) is connected with the fuel tank cover assembly (1).
7. The extended-range national six-gasoline fuel system according to claim 1, 2 or 3, wherein the fuel supply device comprises a fuel rail (15), a fuel supply pipe assembly (16) and an electric fuel pump assembly (4), the fuel rail (15) is located on one side of the gasoline engine assembly (14) close to the fuel tank assembly (3), the fuel rail (15) is connected with the electric fuel pump assembly (4) through the fuel supply pipe assembly (16), and the electric fuel pump assembly (4) is connected with the fuel tank assembly (3).
8. A control method of a six-range extended gasoline fuel system, which utilizes any one of the six-range extended gasoline fuel systems of claims 1-7, characterized by comprising the following steps:
s1: the engine management system (13) judges whether the fuel system leakage diagnosis condition is met, if yes, the step is carried out to S2, and if not, the step is carried out to S7;
s2: starting to perform leakage diagnosis on the fuel system;
s3: the engine management system (13) respectively controls the carbon canister electromagnetic valve (12) and the activated carbon canister vent valve (10) to operate;
s4: an engine management system (13) reads a voltage signal of the fuel vapor pressure sensor and converts the voltage signal into a fuel vapor pressure signal;
s5: the engine management system (13) compares the change curve of the fuel vapor pressure value with a calibrated threshold value, records and stores the comparison result;
s6: the carbon canister electromagnetic valve (12) and the active carbon canister vent valve (10) are restored to the original state;
s7: and ending the leakage diagnosis.
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| CN202110806229.4A CN113653583A (en) | 2021-07-16 | 2021-07-16 | Range-extended national six-gasoline fuel system and control method thereof |
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| CN202110806229.4A CN113653583A (en) | 2021-07-16 | 2021-07-16 | Range-extended national six-gasoline fuel system and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN104564437A (en) * | 2014-12-26 | 2015-04-29 | 长沙众泰汽车工业有限公司 | Enhanced-type fuel evaporation discharge control system |
| CN109113897A (en) * | 2018-07-12 | 2019-01-01 | 湖南吉利汽车部件有限公司 | A kind of vehicle fuel evaporation leak diagnostic apparatus and its diagnostic method |
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| 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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