CN116537976A - Carbon tank, carbon tank desorption system, vehicle and carbon tank desorption control method - Google Patents
Carbon tank, carbon tank desorption system, vehicle and carbon tank desorption control method Download PDFInfo
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- CN116537976A CN116537976A CN202310618545.8A CN202310618545A CN116537976A CN 116537976 A CN116537976 A CN 116537976A CN 202310618545 A CN202310618545 A CN 202310618545A CN 116537976 A CN116537976 A CN 116537976A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 114
- 238000003795 desorption Methods 0.000 title claims abstract description 97
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004891 communication Methods 0.000 claims abstract description 26
- 238000001179 sorption measurement Methods 0.000 claims abstract description 15
- 210000001503 joint Anatomy 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 10
- 230000008020 evaporation Effects 0.000 abstract description 8
- 238000001704 evaporation Methods 0.000 abstract description 8
- 239000000446 fuel Substances 0.000 abstract description 6
- 238000002474 experimental method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
- F02M25/0854—Details of the absorption canister
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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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 carbon tank, a carbon tank desorption system, a vehicle and a carbon tank desorption control method, wherein the carbon tank comprises a tank body and a pressurizing assembly, and the tank body is provided with a carbon powder cavity, an adsorption port, a desorption port, an atmosphere communication port and an air inlet which are all communicated with the carbon powder cavity; the pressurizing assembly comprises a pressurizing pump and a switching valve, wherein an air outlet of the pressurizing pump is communicated with the air inlet, the switching valve is arranged between the air outlet of the pressurizing pump and the air inlet and is used for conducting and disconnecting the air outlet of the pressurizing pump and the air inlet, when the switching valve is opened, the pressurizing pump works in a pressurizing mode, so that air flows from the air inlet and flowing to an atmosphere communication port are formed in a carbon powder cavity, the switching valve is opened, the pressurizing pump starts to work, air flows from the air inlet and flowing to the atmosphere communication port are formed in the carbon powder cavity, positive pressure desorption is achieved on a carbon tank, fuel steam adsorbed by carbon powder in the carbon tank is guaranteed to be desorbed, and therefore evaporation and oiling type test requirements are met, and the problem that desorption flow is insufficient in an existing carbon tank desorption system is solved.
Description
Technical Field
The invention relates to the technical field of automobile emission control, in particular to a carbon tank, a carbon tank desorption system, a vehicle and a carbon tank desorption control method.
Background
After the light automobile pollutant emission limit and measuring method (Chinese sixth stage) GB18352.6-2016 are implemented, the evaporation emission limit is reduced from 2g/test of China five to 0.7g/test, and a refueling test is added, wherein the limit value of the refueling test is 0.05g/test. The key technology that evaporation and refueling experiments can be successfully passed comprises that the desorption flow meets the requirement, and generally, the evaporation experiment requires that the desorption flow reaches 200 times of the volume of the carbon tank, and the refueling experiment requires that the desorption flow reaches 400 times of the volume of the carbon tank. However, in order to meet the limit value requirement of the exhaust emission, the calibration tends to reduce the amount of oil gas entering the engine from the carbon tank side so as to reduce the emission of CO and the like, so that the desorption flow of the carbon tank is insufficient, the evaporation and oiling tests are difficult to pass, the calibration data are required to be adjusted repeatedly, the desorption flow is improved, the manpower and material resources are wasted, and the development progress of the vehicle type is delayed.
Disclosure of Invention
The invention mainly aims to provide a carbon tank, and aims to solve the problem of insufficient desorption flow in the existing carbon tank desorption system.
To achieve the above object, the present invention provides a carbon tank, wherein the carbon tank comprises:
the tank body is provided with a carbon powder cavity, an adsorption port, a desorption port, an atmosphere communication port and an air inlet, wherein the adsorption port, the desorption port, the atmosphere communication port and the air inlet are all communicated with the carbon powder cavity, the adsorption port is used for being communicated with an oil tank, the desorption port is used for being communicated with an air inlet pipe of an engine, and the atmosphere communication port is used for being communicated with the outside; the method comprises the steps of,
the pressurizing assembly comprises a pressurizing pump and a switching valve, wherein an air outlet of the pressurizing pump is communicated with the air inlet, the switching valve is arranged between the air outlet of the pressurizing pump and the air inlet and is used for switching on and off the air outlet of the pressurizing pump and the air inlet, and when the switching valve is opened, the pressurizing pump works in a pressurizing mode, so that air flows from the air inlet to the atmosphere communication port are formed in the carbon powder cavity.
Optionally, the pressurizing assembly further comprises a housing, the housing being formed with an air passage;
the air inlet end of the air channel is communicated with the air outlet of the pressurizing pump, and the air outlet end of the air channel is in butt joint with the air inlet;
the switching valve includes:
the valve body comprises a main body part sleeved in the air passage, and the main body part is provided with a channel communicated with an air inlet end and an air outlet end of the air passage; the method comprises the steps of,
the valve core is movably arranged on the valve body and has an initial position and a working position in the moving stroke of the valve core, the valve core seals the channel in the initial position, and the valve core opens the channel in the working position.
Optionally, the switching valve further includes a reset member disposed between the valve body and the valve core, and providing a reset force when the valve core is switched from the working position to the initial position.
Optionally, the shell comprises a first cavity and a second cavity which are arranged at intervals, a mounting channel communicated with the first cavity is penetrated through the cavity wall of the second cavity, and the main body part is arranged in the mounting channel;
the cavity wall of the first cavity is provided with a first opening in a penetrating mode, the pressurizing pump is arranged in the first opening, the cavity wall of the second cavity is provided with a second opening in a penetrating mode, the second opening is in butt joint with the air inlet, the first opening forms an air inlet end of the air channel, and the second opening forms an air outlet end of the air channel.
Optionally, the booster pump comprises a vane pump.
The invention provides a carbon tank desorption system, which comprises:
a carbon tank;
the electromagnetic valve is used for connecting and disconnecting the desorption port and an engine air inlet pipe; the method comprises the steps of,
the control device is electrically connected with the electromagnetic valve, the switching valve and the pressure pump and is used for respectively controlling the electromagnetic valve, the switching valve and the pressure pump to work;
wherein, the carbon tank includes:
the tank body is provided with a carbon powder cavity, an adsorption port, a desorption port, an atmosphere communication port and an air inlet, wherein the adsorption port, the desorption port, the atmosphere communication port and the air inlet are all communicated with the carbon powder cavity, the adsorption port is used for being communicated with an oil tank, the desorption port is used for being communicated with an air inlet pipe of an engine, and the atmosphere communication port is used for being communicated with the outside; the method comprises the steps of,
the pressurizing assembly comprises a pressurizing pump and a switching valve, wherein an air outlet of the pressurizing pump is communicated with the air inlet, the switching valve is arranged between the air outlet of the pressurizing pump and the air inlet and is used for switching on and off the air outlet of the pressurizing pump and the air inlet, and when the switching valve is opened, the pressurizing pump works in a pressurizing mode, so that air flows from the air inlet to the atmosphere communication port are formed in the carbon powder cavity.
The invention also provides a vehicle comprising a carbon canister desorption system comprising:
a carbon tank;
the electromagnetic valve is used for connecting and disconnecting the desorption port and an engine air inlet pipe; the method comprises the steps of,
the control device is electrically connected with the electromagnetic valve, the switching valve and the pressure pump and is used for respectively controlling the electromagnetic valve, the switching valve and the pressure pump to work;
wherein, the carbon tank includes:
the tank body is provided with a carbon powder cavity, an adsorption port, a desorption port, an atmosphere communication port and an air inlet, wherein the adsorption port, the desorption port, the atmosphere communication port and the air inlet are all communicated with the carbon powder cavity, the adsorption port is used for being communicated with an oil tank, the desorption port is used for being communicated with an air inlet pipe of an engine, and the atmosphere communication port is used for being communicated with the outside; the method comprises the steps of,
the pressurizing assembly comprises a pressurizing pump and a switching valve, wherein an air outlet of the pressurizing pump is communicated with the air inlet, the switching valve is arranged between the air outlet of the pressurizing pump and the air inlet and is used for switching on and off the air outlet of the pressurizing pump and the air inlet, and when the switching valve is opened, the pressurizing pump works in a pressurizing mode, so that air flows from the air inlet to the atmosphere communication port are formed in the carbon powder cavity.
The invention also provides a carbon tank desorption control method which is realized based on the carbon tank desorption system, and comprises the following steps:
and controlling the electromagnetic valve or the switching valve and the booster pump to work according to the rotating speed of the engine.
Optionally, the step of controlling the operation of the electromagnetic valve or the switching valve and the booster pump according to the rotation speed of the engine includes:
when the engine rotating speed is equal to zero, the switch valve is controlled to be closed;
when the engine speed is greater than zero, the electromagnetic valve or the switching valve and the booster pump are controlled to work according to the actual working condition.
Optionally, when the engine speed is greater than zero, the step of controlling the solenoid valve or the switching valve and the booster pump to operate according to the actual working condition includes:
when the rotating speed of the engine is smaller than a set value, the electromagnetic valve is controlled to be closed, and the switching valve and the pressurizing pump are controlled to be opened.
According to the technical scheme provided by the invention, when the engine works normally, the negative pressure generated by the engine enables fuel vapor in the carbon tank to enter the engine through the engine air inlet pipe when the desorption flow is enough, so that the carbon tank can carry out normal desorption, when the engine does not work or the desorption flow is insufficient under a specific working condition, the switching valve is opened, the pressurizing pump starts to work, and air flows from the air inlet and the air communication port are formed in the carbon powder cavity, so that the positive pressure desorption is realized on the carbon tank, the desorption of the fuel vapor adsorbed by carbon powder in the carbon tank is ensured, and the test requirements of evaporation and oiling types are met, so that the problem of insufficient desorption flow in the existing carbon tank desorption system is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of an embodiment of a canister according to the present invention;
FIG. 2 is a schematic cross-sectional view of the carbon canister of FIG. 1;
FIG. 3 is a schematic perspective view of a portion of the structure of the carbon canister of FIG. 1;
fig. 4 is a schematic cross-sectional view of fig. 3.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
At present, the desorption flow of the carbon tank is mostly provided by an engine, and the desorption flow belongs to passive acquisition. When the engine desorption flow is insufficient, the evaporation or fueling test cannot be passed.
In the market, a scheme of installing a negative pressure suction pump between a carbon tank and an engine to suck air and increase desorption flow exists, but the device cannot provide desorption flow when an electromagnetic valve of the carbon tank at the side of the engine is not opened. Meanwhile, when the engine does not operate, the air pump and the electromagnetic valve arranged in the carbon tank stop working, so that the transition loss of the electric energy of the whole vehicle is avoided.
In order to solve the above-mentioned problems, the present invention provides a carbon canister 100, and fig. 1 to 4 are specific embodiments of the carbon canister 100 provided by the present invention.
Referring to fig. 1 to 2, the carbon canister 100 includes a canister body 1 and a pressurizing assembly 2, the canister body 1 is formed with a carbon powder cavity 1a, and an adsorption port 1b, a desorption port 1c, an atmosphere communication port 1d and an air inlet 1e which are all communicated with the carbon powder cavity 1a, the adsorption port 1b is used for communicating with an oil tank, the desorption port 1c is used for communicating with an air inlet pipe of an engine, and the atmosphere communication port 1d is used for communicating with the outside; the pressurizing assembly 2 comprises a pressurizing pump 21 and a switch valve 22, wherein an air outlet of the pressurizing pump 21 is communicated with the air inlet 1e, the switch valve 22 is arranged between the air outlet of the pressurizing pump 21 and the air inlet 1e and is used for conducting and disconnecting the air outlet of the pressurizing pump 21 and the air inlet 1e, and when the switch valve 22 is opened, the pressurizing pump 21 is pressurized to enable air flows from the air inlet 1e to the atmosphere communication port 1d to be formed in the carbon powder cavity 1 a.
In the technical scheme provided by the invention, when the engine works normally, the negative pressure generated by the engine enables the fuel vapor in the carbon tank 100 to enter the engine through the engine air inlet pipe when the desorption flow is enough, so that the carbon tank 100 can carry out normal desorption, and when the engine does not work or the desorption flow is insufficient under a specific working condition, the switch valve 22 is opened, the pressurizing pump 21 starts to work, and air flows from the air inlet 1e to the atmosphere communication port 1d are formed in the carbon powder cavity 1a, so that positive pressure active desorption is realized on the carbon tank 100, and the fuel vapor adsorbed by carbon powder in the carbon tank 100 can be desorbed, thereby meeting the test requirements of evaporation and refueling types.
Specifically, in the present embodiment, the pressurizing assembly 2 further includes a housing 23, and the housing 23 is formed with an air passage; the air inlet end of the air channel is communicated with the air outlet of the pressurizing pump 21, and the air outlet end of the air channel is in butt joint with the air inlet 1 e; the switch valve 22 comprises a valve body 231 and a valve core 232, wherein the valve body 231 comprises a main body part sleeved in the air passage, and the main body part is provided with a channel communicated with an air inlet end and an air outlet end of the air passage; the valve body 231 is movably mounted with the valve body 232, and the valve body 232 has an initial position in which the valve body 232 blocks the passage and a working position in which the valve body 232 opens the passage in its active stroke.
So set up, when the case 232 is in the initial position, the air flue with carbon powder chamber 1a separates for form airtight space between carbon powder chamber 1a and the engine, when the engine normally works, can produce sufficient desorption flow and carry out the desorption to carbon tank 100.
When the engine is in a state of insufficient desorption flow, the valve core 232 is in the working position, and the pressurizing pump 21 pumps air through the air passage, so that air flow is formed in the carbon powder cavity 1a, and flows towards the atmosphere communication port 1d, so that the fuel vapor adsorbed by the carbon powder is driven to be desorbed, and the carbon tank 100 can reach the desorption standard.
Further, in order to facilitate the switching of the valve element 232 between the working position and the initial position, referring to fig. 4, in the present embodiment, the switching valve 22 further includes a reset member 233, wherein the reset member 233 is disposed between the valve body 231 and the valve element 232, and provides a reset force when the valve element 232 is switched from the working position to the initial position.
It should be noted that the restoring member 233 may be provided as a spring or a torsion spring, and of course, the restoring member 233 may be other driving components, such as a motor, a magnetic attraction portion, etc., and the present invention is not limited to the specific type of the restoring member 233.
When the reset piece 233 is a spring between the valve body 231 and the valve core 232, when the switch valve 22 receives an opening instruction, the valve core 232 is moved by induction electromagnetic components and the like, the valve core is dislocated with the air passage, the air passage is communicated with the carbon powder cavity 1a, the spring deforms while the valve core 232 moves, elastic potential energy is stored, when the switch valve 22 receives a closing instruction, a driving part for controlling the valve core 232 to move is powered off, and at the moment, the spring is deformed in a recovery mode, so that the valve core 232 is driven to return to the initial position, and the air passage is blocked.
Specifically, in this embodiment, the housing 23 includes a first cavity 23a and a second cavity 23b that are disposed at intervals, a mounting channel that communicates with the first cavity 23a is penetrated through a cavity wall of the second cavity 23b, and the main body is disposed in the mounting channel; the first opening is formed through the wall of the first cavity 23a, the pressurizing pump 21 is disposed in the first opening, the second opening is formed through the wall of the second cavity 23b, the second opening is in butt joint with the air inlet 1e, the first opening forms the air inlet end of the air channel, and the second opening forms the air outlet end of the air channel. So, through only need set up one on original carbon tank air inlet 1e, will pressurizing assembly 2 install in original carbon tank be provided with air inlet 1 e's one end can, simple structure, processing is convenient. And provides convenience for subsequent installation and maintenance.
Specifically, in the present embodiment, the booster pump 21 includes a vane pump. The vane pump has the characteristics of stable operation, small pressure pulsation, small noise, compact structure, small size and large flow, and is suitable for being arranged at one end of the carbon tank 100, and the influence of the whole size is not great.
The invention also provides a carbon tank 100 desorption system, the carbon tank 100 desorption system comprises the carbon tank 100, the carbon tank 100 desorption system further comprises an electromagnetic valve and a control device, and the electromagnetic valve is used for connecting and disconnecting the desorption port 1c and an engine air inlet pipe; the control device is electrically connected with the electromagnetic valve, the switch valve 22 and the pressure pump 21, and is used for respectively controlling the electromagnetic valve, the switch valve 22 and the pressure pump 21 to work. Because the carbon tank 100 desorption system includes the carbon tank 100, the specific structure of the carbon tank 100 refers to the above embodiment, and because the carbon tank 100 of the carbon tank 100 desorption system adopts all the technical solutions of all the embodiments, at least the carbon tank 100 has all the beneficial effects brought by the technical solutions of the embodiments, and the description thereof is omitted herein.
When the engine is not able to provide sufficient desorption flow, the control device controls the solenoid valve to close, and the carbon canister 100 does not depend on negative pressure generated by the engine to perform desorption, so as to control the on-off valve 22 to open and control the booster pump 21 to start working, and perform positive pressure desorption. In this way, the control device can control whether the carbon tank 100 desorption system performs negative pressure desorption or positive pressure desorption by means of the pressurizing assembly 2 according to the actual working condition of the vehicle.
The invention also provides a vehicle, which comprises the carbon tank 100 desorption system, and because the vehicle comprises the carbon tank 100 desorption system, the specific structure of the carbon tank 100 desorption system refers to the embodiment, and because the carbon tank 100 desorption system of the vehicle adopts all the technical schemes of all the embodiments, the vehicle at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted herein.
The invention also provides a carbon tank 100 desorption control method, which is realized based on the carbon tank 100 desorption system, and comprises the following steps:
step S1, controlling the solenoid valve or the on-off valve 22 and the booster pump 21 to operate according to the rotational speed of the engine.
In the technical scheme provided by the invention, because the desorption flow of the existing carbon tank 100 depends on the magnitude of negative pressure generated when the engine works, when the engine works normally and the generated negative pressure is enough for the desorption flow, when the electromagnetic valve is opened, the carbon tank 100 is communicated with the engine, and desorption can be performed through the negative pressure; when the rotation speed of the engine is insufficient, that is, the desorption flow is insufficient due to the generated negative pressure, active desorption can be performed by the positive pressure generated by the on-off valve 22 and the pressurizing pump 21.
In another embodiment provided by the present invention, step S1: the step of controlling the operation of the solenoid valve or the on-off valve 22 and the booster pump 21 according to the rotational speed of the engine includes:
step S11, when the engine speed is equal to zero, the on-off valve 22 is controlled to be closed;
in this embodiment, the engine speed is equal to zero and no desorption flow is provided when the engine is not running. The control device gives working instructions to the pressurizing pump 21 and the switching valve 22, and stops working when power is off. At this time, the solenoid valve is also in a closed state.
And step S12, when the engine speed is greater than zero, controlling the electromagnetic valve or the on-off valve 22 and the booster pump 21 to work according to the actual working condition.
In this embodiment, once the rotation speed of the engine is greater than zero, it is indicated that the engine starts to operate, and a certain negative pressure can be provided, but whether the desorption flow generated by the negative pressure is sufficient or not needs to control whether the carbon tank 100 performs negative pressure desorption or positive pressure desorption according to the actual working condition.
In another embodiment provided by the present invention, step S12: the step of controlling the operation of the solenoid valve or the on-off valve 22 and the booster pump 21 according to the actual condition when the engine speed is greater than zero includes:
and step S121, when the engine speed is smaller than a set value, the electromagnetic valve is controlled to be closed, and the on-off valve 22 and the pressurizing pump 21 are controlled to be opened.
In this embodiment, the set value provides the lowest standard of the desorption flow rate generated by the negative pressure for the engine, when the engine rotation speed is less than the set value, the desorption flow rate generated by the negative pressure is insufficient, at this time, the electromagnetic valve is controlled to be closed, the switch valve 22 and the pressurizing pump 21 are controlled to be opened at the same time, the pressurizing pump 21 pressurizes the first cavity 23a, the valve core 232 is opened to be at the working position, and an air flow is formed in the carbon powder cavity 1a and flows out from the atmosphere communication port 1d of the carbon tank, so that the carbon tank desorption amount is increased.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (10)
1. A carbon canister, comprising:
the tank body is provided with a carbon powder cavity, an adsorption port, a desorption port, an atmosphere communication port and an air inlet, wherein the adsorption port, the desorption port, the atmosphere communication port and the air inlet are all communicated with the carbon powder cavity, the adsorption port is used for being communicated with an oil tank, the desorption port is used for being communicated with an air inlet pipe of an engine, and the atmosphere communication port is used for being communicated with the outside; the method comprises the steps of,
the pressurizing assembly comprises a pressurizing pump and a switching valve, wherein an air outlet of the pressurizing pump is communicated with the air inlet, the switching valve is arranged between the air outlet of the pressurizing pump and the air inlet and is used for switching on and off the air outlet of the pressurizing pump and the air inlet, and when the switching valve is opened, the pressurizing pump works in a pressurizing mode, so that air flows from the air inlet to the atmosphere communication port are formed in the carbon powder cavity.
2. The canister of claim 1, wherein the pressurization assembly further comprises a housing, the housing defining an air passage;
the air inlet end of the air channel is communicated with the air outlet of the pressurizing pump, and the air outlet end of the air channel is in butt joint with the air inlet;
the switching valve includes:
the valve body comprises a main body part sleeved in the air passage, and the main body part is provided with a channel communicated with an air inlet end and an air outlet end of the air passage; the method comprises the steps of,
the valve core is movably arranged on the valve body and has an initial position and a working position in the moving stroke of the valve core, the valve core seals the channel in the initial position, and the valve core opens the channel in the working position.
3. The canister of claim 2, wherein the switching valve further includes a reset member disposed between the valve body and the valve spool that provides a reset force when the valve spool is switched from the operating position to the initial position.
4. The carbon tank of claim 2, wherein the housing comprises a first cavity and a second cavity which are arranged at intervals, a mounting channel communicated with the first cavity is penetrated through a cavity wall of the second cavity, and the main body part is arranged in the mounting channel;
the cavity wall of the first cavity is provided with a first opening in a penetrating mode, the pressurizing pump is arranged in the first opening, the cavity wall of the second cavity is provided with a second opening in a penetrating mode, the second opening is in butt joint with the air inlet, the first opening forms an air inlet end of the air channel, and the second opening forms an air outlet end of the air channel.
5. The canister of claim 1, wherein the booster pump comprises a vane pump.
6. A canister desorption system, comprising:
a carbon canister as claimed in any one of claims 1 to 5;
the electromagnetic valve is used for connecting and disconnecting the desorption port and an engine air inlet pipe; the method comprises the steps of,
and the control device is electrically connected with the electromagnetic valve, the switching valve and the pressure pump and is used for respectively controlling the electromagnetic valve, the switching valve and the pressure pump to work.
7. A vehicle comprising a canister desorption system according to claim 6.
8. A carbon canister desorption control method implemented based on the carbon canister desorption system according to claim 6, characterized in that the steps of the carbon canister desorption control method include:
and controlling the electromagnetic valve or the switching valve and the booster pump to work according to the rotating speed of the engine.
9. The canister desorption control method according to claim 8, wherein the step of controlling the operation of the solenoid valve or the on-off valve and the booster pump in accordance with the rotational speed of the engine includes:
when the engine rotating speed is equal to zero, the switch valve is controlled to be closed;
when the engine speed is greater than zero, the electromagnetic valve or the switching valve and the booster pump are controlled to work according to the actual working condition.
10. The canister desorption control method according to claim 9, wherein the step of controlling the operation of the electromagnetic valve or the on-off valve and the pressurizing pump according to the actual condition when the engine speed is greater than zero includes:
when the rotating speed of the engine is smaller than a set value, the electromagnetic valve is controlled to be closed, and the switching valve and the pressurizing pump are controlled to be opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310618545.8A CN116537976A (en) | 2023-05-29 | 2023-05-29 | Carbon tank, carbon tank desorption system, vehicle and carbon tank desorption control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310618545.8A CN116537976A (en) | 2023-05-29 | 2023-05-29 | Carbon tank, carbon tank desorption system, vehicle and carbon tank desorption control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116537976A true CN116537976A (en) | 2023-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310618545.8A Pending CN116537976A (en) | 2023-05-29 | 2023-05-29 | Carbon tank, carbon tank desorption system, vehicle and carbon tank desorption control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116537976A (en) |
-
2023
- 2023-05-29 CN CN202310618545.8A patent/CN116537976A/en active Pending
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