CN115163351B - Carbon tank air filter, fuel evaporation control system and self-dedusting method - Google Patents
Carbon tank air filter, fuel evaporation control system and self-dedusting method Download PDFInfo
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- CN115163351B CN115163351B CN202210986957.2A CN202210986957A CN115163351B CN 115163351 B CN115163351 B CN 115163351B CN 202210986957 A CN202210986957 A CN 202210986957A CN 115163351 B CN115163351 B CN 115163351B
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- ecu
- carbon tank
- air
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 59
- 239000000446 fuel Substances 0.000 title claims abstract description 23
- 238000001704 evaporation Methods 0.000 title claims abstract description 20
- 230000008020 evaporation Effects 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000002828 fuel tank Substances 0.000 claims abstract description 33
- 239000000428 dust Substances 0.000 claims abstract description 31
- 238000001914 filtration Methods 0.000 claims description 31
- 230000009191 jumping Effects 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000012423 maintenance Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000002618 waking effect Effects 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims 2
- 238000010926 purge Methods 0.000 abstract description 8
- 238000009825 accumulation Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010408 sweeping Methods 0.000 description 4
- 238000003795 desorption Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 241000239290 Araneae Species 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 239000003502 gasoline Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- F02M25/0809—Judging failure of purge control system
-
- 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
- F02M25/0836—Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold
-
- 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
- F02M2025/0845—Electromagnetic valves
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The application relates to the technical field of automobiles, and particularly discloses a carbon tank air filter, a fuel evaporation control system and a self-dedusting method, wherein the carbon tank air filter can realize omnibearing waterproof through special structural design, the fuel evaporation control system based on the carbon tank air filter also provides the self-dedusting method, when more dust is accumulated on filter paper in an ash filter, an ECU opens a solenoid valve switch on a compressed air connecting pipe of an air inlet pipe after the ash filter and intercooling, so that compressed air enters a compressed air cavity on an upper shell of the ash filter, the filter paper is purged and cleaned through a whole circle of oblique purge holes, and a great amount of dust is carried by the purged air and discharged out of an ash filter cavity from a waterproof valve or an air inlet at the bottom, so that the dedusting effect is achieved, dust accumulation is reduced, and the method also utilizes a pressure sensor to detect the pressure in the fuel tank, so that whether the ash filter is blocked and fails or not can be effectively identified, and multi-level protection is realized.
Description
Technical Field
The application relates to the technical field of automobiles, in particular to a carbon tank air filter, a fuel evaporation control system and a self-dedusting method.
Background
The automobile fuel evaporation control system mainly comprises an oil tank, an activated carbon tank, a carbon tank control electromagnetic valve, a carbon tank ash filter and corresponding OBD (Onboard Diagnosis System, on-board diagnostic system) elements (such as a carbon tank ventilation valve, a positive pressure inflating pump and the like).
The carbon tank ash filter, namely the carbon tank air filter, is an important component element of the automobile fuel evaporation control system. After the emission requirements of the gasoline vehicle enter the state six, the fuel evaporation system is brought into the OBD monitoring range. The ash filter is an important part on the fuel evaporation control system and is used for filtering dust, particles and other floccules contained in air, so that the air entering the OBD element is ensured to be clean, and the OBD element is prevented from being blocked and worn by impurities to cause failure, which is also the necessity of the existence of carbon tank ash filter.
In the prior art, the gasoline light truck has no body and wheel cover of a passenger car, the carbon tank ash filter is usually arranged on a chassis, the environment is relatively bad, the splash frequency is high, the dust amount is large, and the dust cannot be removed independently, so that the failure phenomenon that the water inlet filter paper collapses or the dust amount is too large to block is easy to occur, the carbon tank ash filter replacement frequency is high, and the customer use cost is high.
Disclosure of Invention
The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application provides a carbon tank air filter, a fuel evaporation control system and a self-dedusting method.
A canister air cleaner according to an embodiment of the first aspect of the application includes:
the ash filter bottom shell is internally provided with a spring, and the bottom of one side of the ash filter bottom shell is fixedly provided with a waterproof valve;
the ash filter upper shell is fixedly connected with the ash filter bottom shell to form a cavity and is used for installing a double-layer filter element, the ash filter upper shell comprises an upper shell skirt edge and an ash filter air inlet, the bottom of the ash filter upper shell is provided with an upper shell skirt edge which is convenient for shielding dust, the ash filter air inlet is formed in one side, close to the upper shell skirt edge, of the ash filter upper shell, facing the outer wall of the frame, an ash filter air inlet waterproof shield is arranged on the periphery of the ash filter air inlet, and an ash filter air inlet grille is arranged at the bottom of the ash filter air inlet waterproof shield;
the double-layer filter element is arranged in the cavity, the lower end plate of the double-layer filter element is connected with the spring, the upper end plate of the double-layer filter element and the ash filter upper shell are arranged to form a compressed air cavity, the ash filter upper shell positioned on the upper part of the compressed air cavity is provided with a compressed air inlet joint, and the middle part of the upper end plate of the double-layer filter element is provided with an air outlet joint.
According to the carbon tank air filter provided by the embodiment of the application, omnibearing waterproof and multi-level protection can be realized; utilize shutter structure air inlet, safety cover and ingenious arrangement can effectively block the water of all directions and splash into the ash and strain, can reduce the dust accumulation simultaneously, even if under extreme conditions, have a small amount of water to splash into the ash and strain, also can discharge from the waterproof valve effectively, realize multi-level protection.
According to some embodiments of the application, the double-layer filter element comprises a base, an outer layer filter paper, an inner layer filter paper and a purging hole, wherein the base comprises an upper end plate and a lower end plate, the inner layer filter paper and the outer layer filter paper are installed on the base, and the purging hole of the outer layer filter paper is formed in the upper end plate of the base, on which the outer layer filter paper is installed.
According to some embodiments of the application, the ash filter air inlet is a shutter fence structure, so that water splashing around the ash filter air inlet is prevented.
According to some embodiments of the application, a sealing ring is arranged at the joint of the ash filter bottom shell and the ash filter upper shell, so that the ash filter bottom shell is waterproof.
According to some embodiments of the application, the outer wall of the ash filter upper shell is provided with a mounting bracket, so that the ash filter upper shell is convenient to mount into a vehicle.
According to the carbon tank air filter provided by the embodiment of the second aspect of the application, the ash filtering air inlet grille is provided with a plurality of 2mm x 2mm grating holes, and the combination of the grating holes is used for preventing insects such as spiders, moths and the like from entering into nesting to block the air inlet holes.
According to the carbon tank air filter disclosed by the embodiment of the third aspect of the application, the bottom of the inner side of the ash filter bottom shell is an inclined plane, and the inclined plane forms an included angle of 4 degrees with the horizontal plane, so that the exhaust of condensed water or settled dust in the wet weather air is facilitated.
According to the carbon tank air filter provided by the fourth aspect of the embodiment of the application, the waterproof valve comprises the valve core, the valve core is arranged at the water leakage hole at the bottom of the ash filter bottom shell, and the ash filter bottom shell is externally connected with the waterproof bag and fastened by the binding tape so as to be convenient for water drainage.
According to a fifth aspect of the application, a fuel evaporation control system comprises the carbon tank air filter, wherein the carbon tank air filter is connected with a carbon tank through a carbon tank vent pipe, the carbon tank is connected to a fuel tank through a carbon tank adsorption pipe, the carbon tank air filter is further provided with a carbon tank desorption pipe, a fuel filling limit valve and a fuel tank pressure sensor are arranged in the fuel tank, one side of the fuel tank is connected with a fuel filling pipe, the carbon tank air filter is connected with an intercooler through a first compressed air pipe and a second compressed air pipe, the intercooler is connected with an engine through an after-intercooler air inlet pipe, the engine is communicated with a turbine system, an electromagnetic valve is installed at the joint of the first compressed air pipe and the second compressed air pipe, the after-intercooler air inlet pipe is provided with an air inlet pressure sensor, the air inlet pressure sensor and the fuel tank pressure sensor are electrically connected with an ECU (Electronic Control Unit electronic control unit), and the electromagnetic valve is electrically connected with the ECU.
The fuel evaporation control system provided by the embodiment of the application can be suitable for severe use environments such as a light truck chassis and the like, effectively prevents water splashing and dust accumulation in all directions, greatly prolongs the service life of ash filter, and greatly reduces the replacement frequency and the use and maintenance cost of customers.
According to a sixth aspect of the embodiment of the application, the fuel evaporation control self-dedusting method comprises the following steps:
step S1: powering up the vehicle or starting the engine, and waking up the ECU;
step S2: the ECU reads signals acquired by the fuel tank pressure sensor and records the pressure in the fuel tank as Pt;
step S3: judging whether the pressure Pt in the fuel tank meets the requirement of an ECU preset threshold f1, if so, jumping to the step S4, and if not, jumping to the step S8;
step S4: the ECU reports a carbon tank blockage message to a vehicle central control instrument;
step S5: the engine fault lamp is on, and the vehicle central control instrument displays 'carbon tank blockage, maintenance is requested';
step S6: judging whether the engine is started or not, if the engine is started, jumping to the step S9, and if the engine is not started, jumping to the step S7;
step S7: repeating the step S5, and ending the work after the vehicle central control instrument continuously reports the fault t time;
step S8: starting an engine;
step S9: judging whether the pressure Pt in the fuel tank does not exceed a preset threshold f2 of the ECU, if so, jumping to the step S10, and if not, jumping to the step S11;
step S10: repeating the step S4 and the step S5, and simultaneously enabling the engine to enter a torque limiting operation condition until the pressure Pt in the fuel tank does not exceed the ECU preset threshold f2;
step S11: the ECU reads the signal acquired by the air inlet pressure sensor and records the pressure in the pipeline as Pa;
step S12: judging whether the pressure Pa in the pipeline meets the requirement of the ECU on the preset threshold f3, if so, jumping to the step S13, and if not, returning to the step S11 until the requirement of the preset threshold f3 is met;
step S13: the ECU opens the electromagnetic valve, and compressed air is introduced to clean the carbon tank air filter;
step S14: the ECU starts timing, records the cleaning duration as T, and the step is synchronously carried out with the step S13;
step S15: judging whether the pressure Pa in the pipeline meets the requirement of the ECU on the preset threshold f3, if so, jumping to the step S16, and if not, closing the electromagnetic valve by the ECU and returning to the step S11;
step S16: judging whether the cleaning duration T meets the requirement of the ECU on the preset threshold value S, if so, jumping to the step S17, and if not, returning to the step S14;
step S17: the ECU closes the electromagnetic valve, and the self-dedusting process is finished.
According to the fuel evaporation control self-dedusting method provided by the embodiment of the application, full-automatic dedusting can be realized, the surface of the filter element is always kept clean, the failure caused by dust accumulation on the surface of the ash filter element is prevented, the service life of ash filter is greatly prolonged, the full-life ash filter function is basically realized, and meanwhile, the ash filter fault diagnosis function is realized; the pressure in the tank body detected by the fuel tank pressure sensor can be used for effectively identifying whether the ash filter is blocked and fails.
According to some embodiments of the present application, the air source of the compressed air in the step S13 may be compressed air cooled by an intercooler after being pressurized by a turbocharger system, and the compressed air cooled by the intercooler after being turbocharged is utilized to purge the ash filter element, so as to improve the ash filter purging efficiency and greatly improve the ash filter service life.
The carbon tank air filter, the fuel evaporation control system and the self-dedusting method can be suitable for severe use environments such as a light truck chassis and the like, effectively prevent water splashing and dust accumulation in all directions, greatly prolong the service life of ash filter, greatly reduce the replacement frequency and the use and maintenance cost of customers and improve the satisfaction of the customers.
Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of a canister air cleaner configuration in accordance with an embodiment of the application;
FIG. 2 is an enlarged view of A-A of FIG. 1;
FIG. 3 is a graph of sweep hole versus filter paper angular position according to an embodiment of the present application;
FIG. 4 is a schematic view of the bottom structure of an ash pan according to an embodiment of the application;
FIG. 5 is a block diagram of a fuel vaporization control system according to an embodiment of the present application;
FIG. 6 is a flow chart of a fuel evaporation control self-dedusting method according to an embodiment of the application;
reference numerals:
a waterproof bag 1031, a tie 1032, and a valve core 1033;
an upper housing skirt 1041, a compressed air chamber 1042, an outlet fitting 1043, a compressed air inlet fitting 1044, a mounting bracket 1045, and an ash filter inlet 1046;
an outer filter paper 1051, an inner filter paper 1052, and a purge hole 1053;
the ash filter bottom shell 101, the spring 102, the waterproof valve 103, the ash filter upper shell 104, the double-layer filter element 105, the ash filter air inlet waterproof shield 106 and the ash filter air inlet grille 107;
a water leakage hole 1101;
the carbon tank air filter 1, the fuel tank 2, the refueling limit valve 3, the fuel tank pressure sensor 4, the refueling pipe 5, the ECU6, the carbon tank 7, the carbon tank desorption pipe 8, the carbon tank breather pipe 9, the carbon tank adsorption pipe 10, the intercooling rear air inlet pipe 11, the first compressed air pipe 12, the electromagnetic valve 13, the second compressed air pipe 14, the intercooler 15, the turbine system 16 and the engine 17.
Detailed Description
The following detailed description of embodiments of the application, with reference to the accompanying drawings, is illustrative of the embodiments described herein, and it is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application.
Example 1
Referring to fig. 1 to 3, the present embodiment provides a canister air cleaner, which includes:
the ash filter bottom shell 101 is internally provided with a spring 102, and the bottom of one side of the ash filter bottom shell 101 is fixedly provided with a waterproof valve 103;
the ash filtering upper shell 104 is fixedly connected with the ash filtering bottom shell 101 to form a cavity and is used for installing a double-layer filter element 105, the ash filtering upper shell 104 comprises an upper shell skirt edge 1041 and an ash filtering inlet 1046, an upper shell skirt edge 1141 is arranged at the bottom of the ash filtering upper shell 104 and is convenient for shielding dust, an ash filtering inlet 1046 is formed in one side, close to the upper shell skirt edge 1141, of the outer wall of the ash filtering upper shell 104 facing the frame, an ash filtering inlet waterproof shield 106 is installed on the periphery of the ash filtering inlet 1046, and an ash filtering inlet grille 107 is installed at the bottom of the ash filtering inlet waterproof shield 106;
the double-layer filter element 105 is arranged in the cavity, the lower end plate of the double-layer filter element 105 is connected with the spring 102, the upper end plate of the double-layer filter element 105 and the ash filter upper shell 104 are arranged to form an annular compressed air cavity 1042, the ash filter upper shell 104 positioned at the upper part of the compressed air cavity 1042 is provided with a compressed air inlet joint 1044, and the middle part of the upper end plate of the double-layer filter element 105 is provided with an air outlet joint 1043.
According to the carbon tank air filter provided by the embodiment of the application, omnibearing waterproof and multi-level protection can be realized; utilize shutter structure air inlet, safety cover and ingenious arrangement can effectively block the water of all directions and splash into the ash and strain, can reduce the dust accumulation simultaneously, even if under extreme conditions, have a small amount of water to splash into the ash and strain, also can discharge from the waterproof valve effectively, realize multi-level protection.
The outer wall of the ash filter upper shell 104 is provided with a mounting bracket 1045 which is convenient to be mounted in a vehicle.
According to some embodiments of the present application, the double-layer filter element 105 includes a base, an outer layer filter paper 1051, an inner layer filter paper 1052 and a purge hole 1053, the base includes an upper end plate and a lower end plate, the inner layer filter paper 1052 and the outer layer filter paper 1051 are installed on the base, the inner layer filter paper 1052 intercepts dust particles above 40 micrometers, the outer layer filter paper 1051 intercepts dust particles above 60 micrometers, the double-layer filter element 105 improves dust holding capacity and filtering efficiency, and can better adapt to a light truck chassis environment with a large dust amount. The base upper end plate provided with the outer layer filter paper 1051 is provided with the sweeping holes 1053 of the outer layer filter paper 1051, wherein the paper folding arrangement rule of the filter paper designs the sweeping holes 1053 of the oblique compressed air, each paper folding gap is provided with one sweeping hole 1053, when more dust is accumulated on the filter paper, the ECU opens the electromagnetic valve switch on the compressed air connecting pipe of the air inlet pipe after dust filtration and intercooling, compressed air enters the compressed air cavity on the dust filtration upper shell, the filter paper is swept and cleaned through one whole circle of the oblique sweeping holes, and a large amount of dust is carried by the swept air to be discharged from the waterproof valve or the air inlet at the bottom to the dust filtration cavity, so that the dust removal effect is achieved.
According to some embodiments of the application, the ash intake ports 1046 are a shutter fence structure to prevent water from splashing around.
According to some embodiments of the present application, a sealing ring 108 is installed at the connection between the ash filtering bottom shell 101 and the ash filtering upper shell 104, so as to facilitate waterproof.
Example 2
On the basis of embodiment 1, the ash filter air inlet grille 107 is provided with a plurality of 2mm x 2mm grid holes, and the combination of the grid holes is used for preventing insects such as spiders, moths and the like from entering the nesting and blocking the air inlet holes.
Example 3
As shown in fig. 4, on the basis of embodiment 2, the bottom of the inner side of the ash filter bottom case 101 is an inclined plane, and the inclined plane forms an angle of 4 ° with the horizontal plane, so as to collect dust and water stains at the waterproof valve 103 for discharge.
Example 4
As shown in fig. 1 and 2, on the basis of embodiment 1, the waterproof valve 103 comprises a valve core 1033, the valve core 1033 is installed at a water leakage hole 1101 at the bottom of the ash filter pan 101, and the ash filter pan 101 is externally connected with a waterproof bag 1031 and fastened by a tie 1032, so as to facilitate drainage.
Specifically, a plurality of water leakage holes 1101 are formed in the ash filter bottom shell 101 according to a circumferential rule, then a valve core 1033 made of EPDM rubber is installed at the center position of the water leakage holes 1101, and the projection area of the horizontal plane of the valve core can cover all the water leakage holes 1101.
Specifically, the waterproof bag 1031 is made of EPDM rubber, and has an opening with a width of 4mm 16mm at the lower end, and the waterproof bag 1031 is tied to the ash pan 101 through the tie 1032. When the carbon tank air filter does not work, under the action of gravity, the valve core 1033 is opened, condensed water or dust in the carbon tank air filter can be discharged through the water leakage holes 1101 and the openings of the waterproof bags 1031, when the carbon tank air filter is in an air suction state, the air pressure in the carbon tank air filter is smaller than the atmospheric pressure, and then the valve core 1033 moves upwards to close all the water leakage holes 1101, and the protection of the waterproof bags 1031 is added, so that the water can be ensured to be sucked into the carbon tank air filter from the bottom. When the canister air cleaner is in the self-cleaning state, the air pressure in the canister air cleaner is greater than the atmospheric pressure, the valve spool 1033 returns to the original position, and the dust and air mixture is discharged from the water leakage hole 1101 and the opening of the waterproof bag 1031.
Example 5
Referring to fig. 5, the present embodiment provides a fuel evaporation control system, which includes the above-mentioned canister air cleaner, the canister air cleaner 1 is connected with the canister 7 through the canister breather pipe 9, the canister 7 is connected to the fuel tank 2 through the canister adsorption tube 10, be equipped with refuel limiting valve 3 and fuel tank pressure sensor 4 in the fuel tank 2, fuel tank 2 one side is connected with the filler pipe 5, the canister air cleaner 1 is connected with intercooler 15 through first compressed air tube 12 and second compressed air tube 14, intercooler 15 is connected with engine 17 through the after-cooling intake tube 11, engine 17 communicates with turbine system 16, solenoid valve 13 is installed to first compressed air tube 12 and second compressed air tube 14 junction, after-cooling intake tube 11 is equipped with intake pressure sensor 18, fuel tank pressure sensor 4 all are connected with ECU6 electronic control unit 6 electricity, solenoid valve 13 is connected with ECU6 electricity. The carbon tank air filter 1 is also provided with a carbon tank desorption tube 8.
Example 6
Referring to fig. 6, the embodiment provides a fuel evaporation control self-dedusting method, which includes the following steps:
step S1: the vehicle is powered on or the engine 17 is started, and the ECU6 is awakened;
step S2: the ECU6 reads the signals acquired by the fuel tank pressure sensor 4 and records the pressure in the fuel tank 2 as Pt;
step S3: judging whether the pressure Pt in the fuel tank 2 meets the requirement of the ECU6 for a preset threshold f1, if so, jumping to the step S4, and if not, jumping to the step S8;
step S4: the ECU6 reports a carbon tank 7 blocking message to a vehicle central control instrument;
step S5: the engine 17 is lighted by a fault lamp, and a vehicle central control instrument displays 'carbon tank blockage, maintenance is requested';
step S6: judging whether the engine 17 is started, if the engine 17 is started, jumping to step S9, and if the engine 17 is not started, jumping to step S7;
step S7: repeating the step S5, and ending the work after the vehicle central control instrument continuously reports the fault t time;
step S8: starting the engine 17;
step S9: judging whether the pressure Pt in the fuel tank 2 does not exceed a preset threshold f2 of the ECU6, if so, jumping to the step S10, and if not, jumping to the step S11;
step S10: repeating the step S4 and the step S5, and simultaneously enabling the engine 17 to enter a torque limiting operation condition until the pressure Pt in the fuel tank 2 does not exceed a preset threshold f2 of the ECU6;
step S11: the ECU6 reads the signal acquired by the air inlet pressure sensor 18 and records the pressure in the pipeline as Pa;
step S12: judging whether the pressure Pa in the pipeline reaches the requirement of the ECU6 for the preset threshold value f3, if so, jumping to the step S13, and if not, returning to the step S11 until reaching the requirement of the preset threshold value f 3;
step S13: the ECU6 opens the electromagnetic valve 13, and compressed air is introduced to clean the carbon tank air filter 1;
step S14: the ECU6 starts timing and records the cleaning duration as T, and the step is synchronous with the step S13;
step S15: judging whether the pressure Pa in the pipeline reaches the requirement of the preset threshold f3 of the ECU6, if so, jumping to the step S16, and if not, closing the electromagnetic valve 13 by the ECU6 and returning to the step S11;
step S16: judging whether the cleaning duration T meets the requirement of the ECU6 on the preset threshold value S, if so, jumping to the step S17, and if not, returning to the step S14;
step S17: the ECU6 closes the solenoid valve 13 and the self-dust-removing process ends.
Example 7
Based on example 6, f1 is 5kpa, f2 is-5 kpa, f3 is 2b ar, s is 15s, and the recommended values of the thresholds f1, f2 and f3 are all relative pressure values and can be calibrated.
Example 8
Based on embodiment 6, the air source of the compressed air in step S13 may be compressed air cooled by an intercooler after being pressurized by a turbocharger system, and the compressed air cooled by the intercooler after being turbocharged is utilized to purge the ash filter element, so as to prevent failure caused by accumulation of dust on the surface of the ash filter element, greatly improve the service life of ash filter, and basically realize the full-life ash filter function.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the application.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.
It will be apparent that the described embodiments are only some, but not all, embodiments of the application. Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application for the embodiment. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the application, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A canister air cleaner, comprising:
the dust filter bottom shell (101) is internally provided with a spring (102), and a waterproof valve (103) is fixedly arranged at the bottom of one side of the dust filter bottom shell (101);
the ash filtering upper shell (104) is fixedly connected with the ash filtering bottom shell (101) to form a cavity, the ash filtering upper shell (104) comprises an upper shell skirt edge (1041) and an ash filtering air inlet (1046), an upper shell skirt edge (1141) is arranged at the bottom of the ash filtering upper shell (104), an ash filtering air inlet (1046) is formed in one side, close to the outer wall of the ash filtering upper shell (104) of the upper shell skirt edge (1141), of the ash filtering air inlet (1046), an ash filtering air inlet waterproof shield (106) is arranged on the periphery of the ash filtering air inlet, and an ash filtering air inlet grille (107) is arranged at the bottom of the ash filtering air inlet waterproof shield (106);
the double-layer filter element (105) is installed in the cavity, the lower end plate of the double-layer filter element (105) is connected with the spring (102), the upper end plate of the double-layer filter element (105) is installed with the ash filter upper shell (104) to form a compressed air cavity (1042), the ash filter upper shell (104) on the upper portion of the compressed air cavity (1042) is provided with a compressed air inlet connector (1044), the middle part of the upper end plate of the double-layer filter element (105) is provided with an air outlet connector (1043), the double-layer filter element (105) comprises a base, an outer layer filter paper (1051), an inner layer filter paper (1052) and a blowing hole (1053), the base comprises an upper end plate and a lower end plate, the base upper end plate provided with the outer layer filter paper (1051) is provided with the blowing hole (1053) of the outer layer filter paper (1051).
2. A canister air cleaner according to claim 1, wherein the ash intake (1046) is a louvered fence arrangement.
3. A canister air cleaner according to claim 1, characterized in that the ash filter inlet grille (107) is provided with a number of 2mm x 2mm grille holes.
4. A canister air cleaner according to claim 1, wherein a sealing ring (108) is mounted at the connection of the ash pan (101) and the ash upper housing (104).
5. A canister air cleaner according to claim 4, wherein the bottom inside the ash pan (101) is inclined at an angle of 4 ° to the horizontal.
6. The carbon tank air filter according to claim 1, wherein the waterproof valve (103) comprises a valve core (1033), the valve core (1033) is installed at a water leakage hole (1101) at the bottom of the ash filter pan (101), and the ash filter pan (101) is externally connected with a waterproof bag (1031) and fastened by a tie (1032).
7. The utility model provides a fuel evaporation control system, its characterized in that, includes a carbon tank air cleaner (1) of arbitrary claim 1 through 6, carbon tank air cleaner (1) is connected through carbon tank breather pipe (9) with carbon tank (7), and carbon tank (7) are connected to fuel tank (2) through carbon tank adsorption tube (10), be equipped with fuel tank pressure sensor (4) in fuel tank (2), carbon tank air cleaner (1) are connected through first compressed air pipe (12) and second compressed air pipe (14) with intercooler (15), intercooler (15) are connected through intercooling back intake pipe (11) with engine (17), solenoid valve (13) are installed in first compressed air pipe (12) and second compressed air pipe (14) junction, intercooling back intake pipe (11) are equipped with intake pressure sensor (18), fuel tank pressure sensor (4) all are connected with ECU (6) electricity, solenoid valve (13) are connected with ECU (6) electricity.
8. The fuel evaporation control self-dedusting method is characterized by comprising the following steps of:
step S1: powering up the vehicle or starting the engine (17), waking up the ECU (6);
step S2: the ECU (6) reads signals acquired by the fuel tank pressure sensor (4) and records the pressure in the fuel tank (2) as Pt;
step S3: judging whether the pressure Pt in the fuel tank (2) meets the requirement of a preset threshold f1 of the ECU (6), if so, jumping to the step S4, and if not, jumping to the step S8;
step S4: an ECU (6) reports a carbon tank (7) blocking message to a vehicle central control instrument;
step S5: the engine (17) is lighted by a fault lamp, and a vehicle central control instrument displays 'carbon tank blockage, maintenance is requested';
step S6: judging whether the engine (17) is started, if the engine (17) is started, jumping to the step S9, and if the engine (17) is not started, jumping to the step S7;
step S7: repeating the step S5, and ending the work after the vehicle central control instrument continuously reports the fault t time;
step S8: starting the engine (17);
step S9: judging whether the pressure Pt in the fuel tank (2) does not exceed a preset threshold f2 of the ECU (6), if so, jumping to the step S10, and if not, jumping to the step S11;
step S10: repeating the step S4 and the step S5, and simultaneously enabling the engine (17) to enter a torque limiting operation condition until the pressure Pt in the fuel tank (2) does not exceed a preset threshold f2 of the ECU (6);
step S11: the ECU (6) reads signals acquired by the air inlet pressure sensor (18) and records the pressure in the pipeline as Pa;
step S12: judging whether the pressure Pa in the pipeline reaches the requirement of a preset threshold f3 of the ECU (6), if so, jumping to the step S13, and if not, returning to the step S11 until reaching the requirement of the preset threshold f 3;
step S13: the ECU (6) opens the electromagnetic valve (13) and introduces compressed air to clean the carbon tank air filter (1);
step S14: the ECU (6) starts timing, records the cleaning duration as T, and the step is performed synchronously with the step S13;
step S15: judging whether the pressure Pa in the pipeline reaches the requirement of a preset threshold f3 of the ECU (6), if so, jumping to the step S16, and if not, closing the electromagnetic valve (13) by the ECU (6) and returning to the step S11;
step S16: judging whether the cleaning duration T meets the requirement of a preset threshold value S of the ECU (6), if so, jumping to the step S17, and if not, returning to the step S14;
step S17: the ECU (6) closes the electromagnetic valve (13) and ends the self-dedusting process.
9. The method according to claim 8, wherein the source of compressed air in step S13 is compressed air cooled by an intercooler after being pressurized by a turbocharger system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210986957.2A CN115163351B (en) | 2022-08-17 | 2022-08-17 | Carbon tank air filter, fuel evaporation control system and self-dedusting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210986957.2A CN115163351B (en) | 2022-08-17 | 2022-08-17 | Carbon tank air filter, fuel evaporation control system and self-dedusting method |
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| CN115163351A CN115163351A (en) | 2022-10-11 |
| CN115163351B true CN115163351B (en) | 2023-12-05 |
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| JP5527391B2 (en) * | 2012-11-28 | 2014-06-18 | 三菱自動車工業株式会社 | Fuel evaporative emission control device for internal combustion engine |
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| CN204755133U (en) * | 2015-05-27 | 2015-11-11 | 株洲湘潍机械有限公司 | Engine filtration bypass device |
| CN107178442A (en) * | 2017-06-27 | 2017-09-19 | 平原滤清器有限公司 | A kind of canister ash filter |
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| CN115163351A (en) | 2022-10-11 |
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