CN112628032A - Carbon tank flushing system of supercharged engine system and control method - Google Patents

Carbon tank flushing system of supercharged engine system and control method Download PDF

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Publication number
CN112628032A
CN112628032A CN201910906890.5A CN201910906890A CN112628032A CN 112628032 A CN112628032 A CN 112628032A CN 201910906890 A CN201910906890 A CN 201910906890A CN 112628032 A CN112628032 A CN 112628032A
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CN
China
Prior art keywords
pipeline
outlet
return branch
engine
supercharger
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Pending
Application number
CN201910906890.5A
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Chinese (zh)
Inventor
杨芾
于冠军
陈伟芳
汪欣颖
王乾
高寅马
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SAIC Motor Corp Ltd
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SAIC Motor Corp Ltd
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Publication date
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Priority to CN201910906890.5A priority Critical patent/CN112628032A/en
Publication of CN112628032A publication Critical patent/CN112628032A/en
Pending legal-status Critical Current

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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
    • 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
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D23/00—Controlling engines characterised by their being supercharged
    • 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
    • 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
    • Y02T10/12—Improving ICE efficiencies

Abstract

The invention discloses a carbon tank flushing system of a supercharged engine system and a control method thereof, the system comprises a carbon tank, a Venturi tube section and a return branch pipeline, one port of the return branch pipeline is connected with a main pipeline positioned between an outlet of a supercharger compressor and an inlet of a throttle valve, the other port of the return branch pipeline is communicated with an air inlet main pipeline of the supercharger, the Venturi tube section is arranged on the return branch pipeline, an outlet of the carbon tank is communicated with an inlet of the Venturi tube section through a first pipeline, and a switch valve is arranged on the return branch pipeline, so that the working state of the switch valve can be controlled according to the working condition of the engine system to realize the communication or disconnection of the return branch pipeline. Particularly, when the engine is in a high-load working state and the pressure difference between the air inlet and the air outlet of the supercharger compressor is large, the return branch pipeline can be closed through the switch valve, so that the torque of the engine is improved, and the dynamic property and the economical efficiency of the whole vehicle driving are improved; and when the load of the engine is reduced, the backflow pipeline is opened in time to reduce the pressure of the supercharger after pressure is reduced, so that the pressure is released in time, the pressure release noise is greatly reduced, and the comfort of the whole vehicle driving is improved.

Description

Carbon tank flushing system of supercharged engine system and control method
Technical Field
The invention relates to the technical field of carbon tank flushing, in particular to a carbon tank flushing system of a supercharged engine system and a control method.
Background
In order to reduce air pollution caused by fuel evaporation in a fuel tank to the external environment and increase fuel efficiency, a carbon tank is usually arranged and is connected with the fuel tank through a pipeline, so that the activated carbon in the carbon tank can absorb oil vapor emitted from the fuel tank and is firmly locked in activated carbon micropores of the carbon tank to prevent the oil vapor from being emitted to the atmosphere. And, the oil vapor adsorbed by the activated carbon in the canister can be delivered to the engine at the time of engine start to improve fuel efficiency.
The connection pipeline system of the carbon tank in the prior art mainly comprises the following two types: the first method is to add an electronic pump in the pipeline system, and the oil vapor adsorbed in the carbon tank is pumped into the engine air inlet pipeline by the electronic pump to enter the combustion chamber to participate in combustion. The second is a double-pipeline system, when the air pressure behind the throttle valve is positive pressure, part of fresh air flowing out of the outlet of the supercharger returns to the inlet of the supercharger, and oil vapor in the carbon tank is led out to the inlet of the supercharger by utilizing the low pressure formed by the return of the part of fresh air, and then enters the combustion chamber to be combusted.
Among them, the second canister connection piping system is currently most widely used in the automotive field, but the second canister connection piping system has the following disadvantages: when the engine is under high load, the engine torque is relatively low. While the torque response of a supercharged engine is generally poorer than that of a naturally aspirated engine, this arrangement can adversely affect the torque response. Because of the inherent characteristics of the supercharger, when the engine is under heavy load, the accelerator is suddenly released, the supercharger pressure of the supercharger is not in time to release pressure, and pressure release noise is often generated.
Therefore, how to improve the working efficiency of the engine and reduce the pressure relief noise on the premise of realizing the carbon tank flushing is a technical problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
The invention provides a carbon tank flushing system of a supercharged engine system, which comprises a carbon tank, a Venturi tube section and a return branch pipeline, wherein one port of the return branch pipeline is connected with a main pipeline positioned between an outlet of a supercharger and an inlet of a throttle valve, the other port of the return branch pipeline is communicated with an air inlet main pipeline of the supercharger, the Venturi tube section is arranged on the return branch pipeline, the outlet of the carbon tank is communicated with the inlet of the Venturi tube section through a first pipeline, and the return branch pipeline is provided with a switch valve for controlling the communication or disconnection of the return branch pipeline.
Compared with the prior art that the return branch pipeline is always in a connected state, the switch valve is arranged on the return branch pipeline, and the working state of the switch valve can be controlled through the working condition of an engine system so as to realize the connection or disconnection of the return branch pipeline. Especially when the engine is in a high-load working state and the pressure difference between the air inlet and the air outlet of the supercharger is large, the return branch pipeline can be closed through the switch valve, the torque of the engine is improved, the pressure of the supercharger is reduced, the pressure is released in time, the pressure release noise is greatly reduced, and the performance of an engine system is improved.
Optionally, the outlet of the carbon tank is also communicated with the outlet pipeline of the throttle valve through a second pipeline.
Optionally, the carbon canister electromagnetic valve further comprises a carbon canister electromagnetic valve, the carbon canister electromagnetic valve comprises a valve body, a medium inlet, a first medium outlet and a second medium outlet are arranged on the surface of the valve body, the first medium outlet and the second medium outlet are respectively communicated with the medium inlet through corresponding channels inside the valve body, the first medium outlet is communicated with the first pipeline, the second medium outlet is communicated with the second pipeline, and the medium inlet is communicated with the outlet of the carbon canister.
Optionally, an upstream pipe air inlet port of the return branch pipeline is connected to a pipeline between the throttle valve and an intercooler of the supercharged engine system.
Optionally, the pipe diameter range of the return branch pipe connected between the throttle valve and the venturi pipe is as follows: 18mm-20 mm.
In addition, the invention also provides a control method of the carbon tank flushing system of the supercharged engine system based on any one of the above, wherein an air inlet of the engine is connected to the tail end of an air outlet main pipeline of the supercharger; and when the difference between the air inlet pressure and the air outlet pressure of the supercharger is larger than a preset value, controlling the switch valve to be in a closed state and maintaining the closed state for a preset time so as to separate an air inlet main pipeline of the supercharger from an air outlet main pipeline of the supercharger.
Optionally, when the engine is in a medium-load or high-load running state and the vehicle is detected to be in a rapid acceleration state, controlling the switch valve to be closed and maintaining the state for 5S to 10S; the high load refers to a working condition that the difference between the air outlet pressure of the supercharger and the air inlet pressure of the supercharger is greater than 1.
Optionally, when the engine is in a medium-load or high-load running state and the vehicle is detected to be in a fuel release state, the switching valve is controlled to be communicated and maintained for 1S to 3S.
Optionally, when the engine is in a low-load operating state and the vehicle is detected to be in a rapid acceleration state, the switching valve is controlled to be closed and maintained for 2S-3S, where the low load refers to a working condition where the outlet pressure of the supercharger is less than or equal to 1 atmosphere of the working environment.
Optionally, when the engine is in a low-load operating state and low-pressure EGR is detected, the on-off valve is controlled to be closed, where the low load refers to a condition that the outlet pressure of the supercharger is less than or equal to 1 atmosphere of the operating environment.
Drawings
FIG. 1 is a schematic block diagram of a supercharged engine system of the present invention;
FIG. 2 is a schematic representation of engine operating conditions according to one embodiment of the present disclosure.
Wherein, the one-to-one correspondence between the reference numbers and the names of the components in fig. 1 is as follows:
10-an engine; 11-an air filter; 12-a supercharger compressor; 13-an intercooler; 14-a throttle valve; 15-carbon canister; 16-canister solenoid valves; 17-a venturi section; 18-a fuel tank; 20-an air flow sensor; 21-air filter; 22-an EGR system; 23-a supercharger turbine; 24-switch valve.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to a vehicle armrest mechanism, a control method, a drawing, and specific embodiments.
Referring to fig. 1 to 2, fig. 1 is a schematic structural diagram of a supercharged engine system according to the present invention; FIG. 2 is a schematic representation of engine operating conditions according to one embodiment of the present disclosure.
The engine pipeline system comprises an air inlet pipeline system and an air outlet pipeline system, wherein the air inlet pipeline system comprises a supercharger compressor 12, an intercooler 13 and a throttle valve 14, and all the parts are arranged along the direction of air inlet flow. The exhaust line system includes components such as an exhaust manifold, a supercharger turbine 23, and a catalytic device. Of course, the components in the intake and exhaust duct systems are not limited to those described herein and may include other components.
The invention provides a carbon tank flushing system of a supercharged engine system, which is characterized in that a supercharging device is arranged on an air inlet pipeline of an engine. The canister flushing system includes a canister 15, a venturi section 17 and a return branch line. The canister 15 includes an inlet and an outlet, the inlet is connected to the fuel tank 18, fuel vapor in the fuel tank 18 can enter the canister 15 along a pipeline and be adsorbed by activated carbon in the canister 15, and the connection of the outlet of the canister 15 will be described in detail later.
The venturi section 17 is a pipeline utilizing the principle of venturi tube, and the structure and working principle of venturi tube can refer to the existing data, which are not described herein.
One end port of the return branch pipeline is connected with a main pipeline between the outlet of the supercharger compressor 12 and the inlet of the throttle valve 14, and the other end port of the return branch pipeline is communicated with an air inlet main pipeline of the supercharger compressor 12. That is, when the return branch pipeline is in a connected state, part of the gas in the outlet pipeline of the supercharger compressor 12 may return to the inlet main pipeline of the supercharger compressor 12 through the return branch pipeline, and then enter the inside of the supercharger compressor 12 to be compressed along with the fresh gas entering from the external environment.
Wherein venturi section 17 sets up in the return branch pipe way, and the export of carbon tank 15 is through the import of first pipeline intercommunication venturi section 17, that is to say, venturi section 17 has two imports and an export, wherein the equal inside intercommunication export of two imports. The two inlets of the venturi section 17 are defined herein as a first inlet and a second inlet, respectively, the first inlet and the outlet being connected in series to the return branch line, and the second inlet being connected to the outlet of the canister.
When the air pressure behind the throttle valve 14 is positive pressure, part of fresh air flowing out of the outlet of the supercharger compressor 12 returns to the inlet of the supercharger compressor 12 along the return branch pipeline, the part of fresh air returns to low pressure formed when passing through the venturi tube section 17 in the process, and then oil steam in the carbon tank is led out to the inlet of the supercharger compressor 12 and then enters the combustion chamber to be combusted.
The carbon tank flushing system further comprises a switch valve 24, and the switch valve 24 is arranged on the return branch pipeline and used for controlling connection or disconnection of the return branch pipeline. When the switch valve 24 is in a state of being communicated with the return branch pipeline, under the action of the low pressure at the outlet of the venturi tube section 17, oil vapor adsorbed in the carbon tank can be led to the main air inlet pipeline of the supercharger compressor 12; when the switch valve 24 is in a state of disconnecting the return branch line, the carbon tank flushing operation is suspended.
The switch valve 24 is preferably an automatic switch valve 24, and can be automatically controlled by a controller, such as a solenoid valve or a vacuum control valve.
Compared with the return branch pipeline in the prior art which is always in a connected state, the switch valve 24 is arranged on the return branch pipeline, and the working state of the switch valve 24 can be controlled through the working condition of an engine system, so that the return branch pipeline is connected or disconnected. Especially when the engine is in a high-load working state and the pressure difference between the air inlet and the air outlet of the supercharger compressor 12 is large, the return branch pipeline can be closed through the switch valve 24, the torque of the engine is improved, the pressure of the supercharger compressor 12 is reduced, the pressure is released in time, the pressure release noise is greatly reduced, and the performance of an engine system is improved.
Specifically, in one embodiment, the outlet of the canister is also communicated with the outlet pipeline of the throttle valve 14 through the second pipeline, so that part of the oil vapor in the canister can directly enter the combustion chamber of the engine along the second pipeline for combustion.
Namely, a part of the oil vapor inside the carbon canister 15 can directly enter the combustion chamber of the engine along the second pipeline, and the other part of the oil vapor enters the main air inlet pipeline of the supercharger compressor 12 under the state that the switch valve 24 is communicated with the return branch pipeline.
The carbon tank is flushed by the double-pipeline system, so that the oil vapor in the carbon tank can be timely and completely discharged.
The carbon tank flushing system in each of the above embodiments may further include a carbon tank solenoid valve 16, where the carbon tank solenoid valve 16 includes a valve body, a surface of the valve body is provided with a medium inlet, a first medium outlet and a second medium outlet, the first medium outlet and the second medium outlet are respectively communicated with the medium inlet through corresponding channels inside the valve body, the first medium outlet is communicated with the first pipeline, the second medium outlet is communicated with the second pipeline, and the medium inlet is communicated with the outlet of the carbon tank 15.
The canister solenoid valve 16 can simplify the pipeline design and control the opening of the valve port to control the flow of oil vapor in each pipeline on the premise of realizing the connection between the first pipeline and the second pipeline and the outlet of the canister 15.
In the above embodiments, the upstream pipe intake port of the return branch pipe may be connected to a pipe between the throttle valve 14 and the intercooler 13 of the engine system.
Further, in order to increase the flushing efficiency of the canister 15, the pipe diameter range of the return branch pipe connected between the throttle valve 14 and the venturi tube is designed herein as follows: 18mm-20 mm; practice proves that the backflow branch pipeline with the pipe diameter can meet the pressure relief requirements of high-load throttle release of different engine systems. Of course, the pipe diameter of the return branch pipe is not limited to the above design.
The air filter 11, the air flow sensor 20 and the like can also be arranged on an air inlet main pipeline of a supercharger compressor 12 of the supercharged engine system. The canister may also have a conduit to the outside environment, the end of which outside the canister 15 is connected to an air filter 21.
On the basis of the carbon tank flushing system, the invention also provides a control method of the carbon tank flushing system of the supercharged engine system based on the above embodiments, specifically: the air inlet of the engine is connected to the tail end of the main air outlet pipeline of the supercharger compressor 12; when the difference between the inlet pressure and the outlet pressure of the supercharger compressor 12 is greater than a predetermined value, the switching valve 24 is controlled to be in a closed state and maintained for a preset time, so that the inlet main pipeline of the supercharger compressor 12 is separated from the outlet main pipeline of the supercharger compressor 12.
The predetermined value of the difference between the inlet pressure and the outlet pressure of the supercharger compressor 12 may be selected according to the operating condition of the supercharged engine system, specifically according to the operating parameters of the supercharger compressor 12.
The following gives specific control of the on-off valve 24 when the engine is in different operating conditions:
when the engine is in a medium-load or high-load running state and the vehicle is detected to be in a rapid acceleration state, controlling the switch valve 24 to be closed and maintaining the state for 5S to 10S; the high load refers to a working condition that the outlet pressure of the supercharger compressor 12 is greater than 1 atmosphere of the working environment.
More specifically, the operating state when the outlet pressure of the supercharger compressor 12 is less than or equal to 1 atmosphere of the operating environment is defined as the low-load operating state of the engine by taking 1 atmosphere as a boundary. The region W1 in fig. 2.
The working condition which mainly comprises an 80-100% area of the maximum torque of the engine is used for defining the high-load running state of the engine, and the high-load running state can be adjusted according to the actual application condition of the whole vehicle. Such as the region of the graph W2.
The remaining regions after the region W1 and the region W2 are removed are the medium load operating state of the engine.
The engine low load operating state, the engine medium load operating state and the engine high load operating state may be defined according to a specific vehicle type, and the above description only provides a specific definition manner, and certainly does not exclude other definition manners.
For example, when the engine is in the medium-load or high-load operating state and the vehicle is detected to be in the fuel-release state, the on-off valve 24 is controlled to be communicated and maintained for 1S to 3S.
In one embodiment, when the engine is in a low-load operating state and the vehicle is detected to be in a rapid acceleration state, the switching valve 24 is controlled to be closed and maintained for 2S-3S.
EGR (English full name: Exhaust Gas Recirculation; Chinese: EGR) refers to Exhaust Gas Recirculation and is generally divided into high-pressure EGR and low-pressure EGR, wherein the high-pressure EGR refers to the Gas intake before a catalyst and the Gas intake after a supercharger compressor; low pressure EGR is typically drawn from behind the catalyst and forced air in front of the supercharger compressor.
Further, in each of the above embodiments, when the engine is in the low load operating state and the low pressure EGR22 is detected, the on-off valve 24 is controlled to be closed.
Low pressure EGR22 generally introduces exhaust gas into the supercharger before it, mixes evenly through the agitation of the supercharger, and if some gas enters from the venturi, the EGR system is less homogenous with fresh air, thus requiring the venturi section 17 to be shut off; if there is no low pressure EGR and the pressure drop in the line is lower after air enters the intercooler 13 directly from the venturi section 17 than the resistance through the supercharger and intercooler 13, then it is considered to open the venturi solenoid valve to reduce pumping losses and reduce fuel consumption in the part load region.
The carbon tank flushing system of the supercharged engine system and the control method thereof provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (10)

1. The utility model provides a carbon tank flushing system of supercharged engine system, characterized in that, includes carbon tank (15), venturi section (17) and return branch pipeline, the main pipeline that is located between booster (12) export and throttle valve (14) import is connected to a port of return branch pipeline, another port intercommunication of return branch pipeline the main pipeline that admits air of booster (12), venturi section (17) set up in return branch pipeline, the export of carbon tank (15) is through first pipeline intercommunication the import of venturi section (17), and be provided with ooff valve (24) on the return branch pipeline for control the intercommunication or the disconnection of return branch pipeline.
2. A canister flushing system for a supercharged engine system according to claim 1, characterized in that the outlet of the canister (15) also communicates with the outlet line of the throttle valve (14) via a second line.
3. A canister flushing system for a supercharged engine system according to claim 2, further comprising a canister solenoid valve (16), said canister solenoid valve (16) comprising a valve body, said valve body having a surface provided with a medium inlet, a first medium outlet and a second medium outlet, said first medium outlet and said second medium outlet being respectively communicated with said medium inlet through corresponding passages inside said valve body, said first medium outlet being communicated with said first conduit, said second medium outlet being communicated with said second conduit, said medium inlet being communicated with an outlet of said canister (15).
4. A canister flushing system according to claim 1, characterised in that the upstream pipe inlet port of the return branch line is connected to a line between the throttle valve (14) and an intercooler (13) of a supercharged engine system.
5. A canister flushing system for a supercharged engine system according to claim 4, characterized in that the range of the pipe diameters of the return branch line connected between said throttle valve (14) and said venturi is: 18mm-20 mm.
6. A control method for a canister flushing system of a supercharged engine system based on any one of claims 1 to 5, characterized in that the air intake of the engine is connected to the end of the main outlet line of the supercharger (12); and when the difference between the inlet pressure and the outlet pressure of the supercharger (12) is larger than a preset value, controlling the switch valve (24) to be in a closed state and maintaining the closed state for a preset time so as to isolate the inlet main pipeline of the supercharger (12) from the outlet main pipeline of the supercharger (12).
7. The control method according to claim 6, characterized in that, when the engine is in a medium-load or high-load operating state, and a vehicle is detected to be in a rapid acceleration state, the on-off valve (24) is controlled to be closed and maintained for 5S to 10S; the medium load refers to a working condition that the outlet pressure of the supercharger (12) is greater than the local environment pressure, and the high load refers to a working condition that the output torque of the engine is 80-90% of the maximum torque of the current rotating speed.
8. The control method according to claim 7, characterized in that, when the engine is in a medium-load or high-load operating state, and the vehicle is detected to be in a fuel-released state, the on-off valve (24) is controlled to be communicated and maintained for 1S to 3S.
9. The control method according to claim 6, characterized in that the switch valve (24) is controlled to close and maintain 2S-3S when the engine is in a low-load operating state and the vehicle is detected to be in a rapid acceleration state, wherein the low load refers to a condition that the air outlet pressure of the supercharger (12) is less than or equal to 1 atmosphere of the working environment.
10. The control method according to claim 6, characterized in that the on-off valve (24) is controlled to be closed when the low-pressure EGR is detected when the engine is in a low-load operating state, wherein the low load refers to an operating condition that the air outlet pressure of the supercharger (12) is less than or equal to 1 atmosphere of the operating environment.
CN201910906890.5A 2019-09-24 2019-09-24 Carbon tank flushing system of supercharged engine system and control method Pending CN112628032A (en)

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CN201910906890.5A CN112628032A (en) 2019-09-24 2019-09-24 Carbon tank flushing system of supercharged engine system and control method

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Application Number Priority Date Filing Date Title
CN201910906890.5A CN112628032A (en) 2019-09-24 2019-09-24 Carbon tank flushing system of supercharged engine system and control method

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014240622A (en) * 2013-06-11 2014-12-25 浜名湖電装株式会社 Vaporized fuel purge device
CN105781804A (en) * 2015-01-09 2016-07-20 福特环球技术公司 Systems and methods for improving canister purging
CN207131503U (en) * 2017-07-25 2018-03-23 广州汽车集团股份有限公司 Canister desorption apparatus and automobile
CN111502869A (en) * 2019-01-17 2020-08-07 大众汽车有限公司 Method for regenerating an activated carbon filter and internal combustion engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014240622A (en) * 2013-06-11 2014-12-25 浜名湖電装株式会社 Vaporized fuel purge device
CN105781804A (en) * 2015-01-09 2016-07-20 福特环球技术公司 Systems and methods for improving canister purging
CN207131503U (en) * 2017-07-25 2018-03-23 广州汽车集团股份有限公司 Canister desorption apparatus and automobile
CN111502869A (en) * 2019-01-17 2020-08-07 大众汽车有限公司 Method for regenerating an activated carbon filter and internal combustion engine

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Application publication date: 20210409