CN102588154A - Carbon tank three-way connecting device and connecting structure thereof in supercharged gasoline motor car - Google Patents

Carbon tank three-way connecting device and connecting structure thereof in supercharged gasoline motor car Download PDF

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Publication number
CN102588154A
CN102588154A CN2012100471937A CN201210047193A CN102588154A CN 102588154 A CN102588154 A CN 102588154A CN 2012100471937 A CN2012100471937 A CN 2012100471937A CN 201210047193 A CN201210047193 A CN 201210047193A CN 102588154 A CN102588154 A CN 102588154A
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CN
China
Prior art keywords
described
way valve
interface
canister
connection set
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CN2012100471937A
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Chinese (zh)
Inventor
张传荣
杨安志
金吉刚
张振兴
赵福全
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浙江吉利汽车研究院有限公司
浙江吉利控股集团有限公司
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Priority to CN2012100471937A priority Critical patent/CN102588154A/en
Publication of CN102588154A publication Critical patent/CN102588154A/en

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Abstract

The invention provides a carbon tank three-way connecting device and a connecting structure thereof in a supercharged gasoline motor car. The invention belongs to the technical fields of engineering components and mechanical engineering and solves the problems that desorption measures adopted by the existing supercharged engine carbon tank cannot meet the desorption requirements of the carbon tank and easily lead to the leakage faults. The carbon tank three-way connecting device comprises a connecting body provided with three connectors, wherein a first connector and a second connector are connected through a one-way valve I; the second connector and a third connector are communicated through a Venturi channel; and the first connector is connected with the small port of the exit divergent part of the Venturi channel through a one-way valve II. The connecting structure is characterized in that the first connector of the carbon tank three-way connecting device is connected with the carbon tank through a carbon tank control valve; the second connector of the carbon tank three-way connecting device is communicated with an intake manifold; and the third connector of the carbon tank three-way connecting device is communicated with an air inlet of a supercharger. The carbon tank three-way connecting device has the advantages of simple structure, scientific and reasonable design and stable performance.

Description

Canister threeway connection set and the linkage structure of this device in the gasoline supercharging car

Technical field

The invention belongs to the engineering element technical field, relate to a kind of connection set, particularly a kind of canister threeway connection set.

The present invention also belongs to mechanical engineering technical field, relates to a kind of linkage structure, the linkage structure of particularly a kind of canister threeway connection set in the gasoline supercharging car.

Background technique

Along with automotive industry ground is fast-developing, the recoverable amount of automobile is more and more.And the fuel of most of compact car is gasoline; Gasoline is volatile; Fuel oil in the fuel tank can volatilize very soon increases the pressure of fuel tank internal, when pressure arrives certain value, will produce certain danger, the balance pressure so people just try; Originally be that fuel tank cap has been made pressure-limit valve; When pressure exceeded a certain value, pressure-limit valve was just opened, and sent to gasoline vapor in the atmosphere.

The Along with people's fuel saving constantly improves with the consciousness of protection environment, so people have designed canister, canister is contained between petrol tank and the motor.Canister inside is filled by the very strong active carbon of adsorptivity; Fuel-steam unnecessary in the fuel tank no longer is discharged in the atmosphere, but has a pipe to introduce activated carbon canister, active carbon adsorption fuel-steam; In the time of start; The activated carbon canister solenoid valve is opened in good time, pours the fuel-steam that absorbs into intake manifold again, to reach the purpose of practicing thrift fuel oil and environmental protection.

Along with the development of engine booster technology, supercharged engine is got over obviously in the advantage aspect energy-saving and environmental protection, the power performance, and the automobile of configuration supercharged engine is also more and more.

Canister in the setting on the regular price gasoline car is: directly receive through canister control valve on the joint of engine intake manifold; Because of uniform-charge Otto-engine is in negative pressure state in the intake manifold when working always, therefore can satisfy the desorption demand of canister through simple loop.

After pressurized machine reached certain working state in supercharged engine, the pressure in the intake manifold can transfer malleation to, and then causing being applied on the regular price gasoline car canister linkage structure can't use in supercharged engine.Obviously, the design in canister desorption loop has certain degree of difficulty.At present; The measure that most vehicle is taked is: canister control valve comes out to connect a tee union; Two interfaces in addition of tee union are received engine intake manifold and pressurized machine suction port place respectively through pipeline; For preventing to manage interior gas backstreaming, in every pipeline, all insert a unidirectional stop valve.The negative pressure at the pressurized machine suction port place when running up of the negative pressure when utilizing the supercharged engine idling in the intake manifold is carried out desorption to canister.[the Chinese patent number: 201010229087.1 of a kind of three-way valve that is used for automobile canister of record in the Chinese patent document; Notice of authorization number: CN101881241A], this three-way valve is one of tee union of adopting of present most vehicle.

Though above-mentioned supercharged engine canister desorption measure has certain effect; But have certain defective: the negative pressure that 1, when the vehicle high speed operation, mainly relies on pressurized machine suction port place is carried out desorption to canister; And the negative pressure value here is relevant with the gas handling system design resistance; And the intake resistance design load of gas handling system is generally about 3kPa, and big discharge capacity vehicle is generally 7kPa, so the negative pressure at pressurized machine suction port place is generally-3kPa; Be at most-7kPa to have satisfied not the desorption demand of canister usually.2, when vehicle during at low cruise (such as the city operating mode); Because of pressurized machine is worked, negative pressure disappears in the engine intake manifold, and this moment is not high because of engine speed; The air requirements amount is little; The negative pressure that produces at pressurized machine suction port place is very little, can not overcome canister desorption resistance, causes canister to can not get desorption for a long time and loses effect.3, a tee union, two unidirectional stop valves are arranged in the pipeline, connecting joint quantity is more, is prone to produce leakage failure.

Summary of the invention

The objective of the invention is to have the problems referred to above, proposed a kind of canister threeway connection set that can insert supercharged engine canister desorption loop to existing technology.

The invention allows for a kind of ability and produce high and stable negative pressure, and the succinct linkage structure of the connection set of canister threeway easily in the gasoline supercharging car of the tipping in canister desorption loop.

The object of the invention can be realized through following technical proposal: a kind of canister threeway connection set; Comprise connecting body with three interfaces; It is characterized in that, between described first interface and second interface through medium is connected from the one-way valve one that first interface flows to second interface; Described second interface is connected through the venturi passage with the 3rd interface; Described venturi passage comprises inlet taper, cylindrical shape throat and outlet flaring portion, and the outlet flaring portion large port of described venturi passage is connected with the 3rd interface; Between the outlet flaring portion portlet place of described first interface and venturi passage through medium is connected from the one-way valve two that first interface flows to the outlet flaring portion of venturi passage.

Canister threeway connection set can be arranged on the canister desorption loop; Three interfaces are connected with corresponding adapter.When the pressure of second jointing was lower than the pressure of first jointing, one-way valve one was opened automatically, and one-way valve two also possibly opened automatically, gas flow second interface of first jointing.When the pressure of second jointing is higher than the pressure of the 3rd jointing; Gas gets into the 3rd interface through the venturi passage; Owing to produce " venturi " effect; The outlet port of one-way valve two produces bigger negative pressure, so one-way valve two opens automatically, and the gas of first jointing flows to the 3rd interface through one-way valve two.Obviously; " venturi " effect that produces the venturi passage has improved the pressure reduction between one-way valve two turnover and the outlet effectively; When promptly being in than small pressure difference between second interface and the 3rd interface one-way valve two is opened, and then realized gas flow the 3rd interface of first jointing.

In above-mentioned canister threeway connection set, the cylindrical shape throat diameter of described venturi passage is 1.5~2.5mm.Above-mentioned numerical value by motor full admission amount 1% and calculate according to the correlation formula of " venturi " effect, obviously have scientific basis, the negative pressure that produces with one-way valve two outlets constantly satisfies actual demand.

In above-mentioned canister threeway connection set, between described first interface and the 3rd interface through medium is connected from the one-way valve three that first interface flows to the 3rd interface.One-way valve three is set has increased the limit flow value when mixed gas is flowed through this linked set, and then can improve the efficient of canister desorption.

In above-mentioned canister threeway connection set, when pressure reduction was greater than 70~200Pa between the import of described one-way valve one and the outlet, described one-way valve one was in connected state.

In above-mentioned canister threeway connection set, when pressure reduction was greater than 70~200Pa between the import of described one-way valve two and the outlet, described one-way valve two was in connected state.

In above-mentioned canister threeway connection set, when pressure reduction was greater than 70~200Pa between the import of described one-way valve three and the outlet, described one-way valve three was in connected state.

In above-mentioned canister threeway connection set, the cracking pressure of described one-way valve one, one-way valve two and one-way valve three value is basic identical.

In above-mentioned canister threeway connection set, described connecting body comprises pedestal and the top cover that is sealedly and fixedly connected with pedestal; Described first interface is positioned at top cover; Described second interface and the 3rd interface all are positioned at pedestal; Described one-way valve one, one-way valve two and one-way valve three are fixed in the pedestal.

In above-mentioned canister threeway connection set, have three grooves on the junction surface of described pedestal and top cover, described one-way valve one, one-way valve two and one-way valve three and three corresponding one by one settings of groove.

A kind of above-mentioned linkage structure of canister threeway connection set in the gasoline supercharging car is characterized in that described gasoline supercharging car comprises canister, canister control valve, pressurized machine, intake manifold and canister threeway connection set; Described linkage structure comprises that first interface of canister threeway connection set is connected with canister through canister control valve; Second interface of described canister threeway connection set is connected with intake manifold; The 3rd interface of described canister threeway connection set is connected with the suction port of pressurized machine.

Compared with prior art, this canister threeway connection set only comprises connecting body and several one-way valve, has advantage of simple structure thus; Adopt venturi efficient to increase pressure reduction, canister more is prone to by desorption, have design science and advantage reasonable, stable performance thus.

The linkage structure of this canister threeway connection set in the gasoline supercharging car has advantage easy to connect; The motor canister desorption usefulness that is connected with the gasoline supercharging car of above-mentioned canister threeway connection set promotes greatly.

Description of drawings

Fig. 1 is the structural representation block diagram of the linkage structure of this canister threeway connection set in the gasoline supercharging car.

Fig. 2 is the sectional structure schematic representation of this canister threeway connection set.

Fig. 3 is linkage structure another embodiment of this canister threeway connection set in the gasoline supercharging car a structural representation block diagram.

Fig. 4 is another embodiment's of this canister threeway connection set a sectional structure schematic representation.

Fig. 5 is the perspective view of this canister threeway connection set.

Among the figure, 1, connecting body; 1a, pedestal; 1b, top cover; 1c, first interface; 1d, second interface; 1e, the 3rd interface; 1f, venturi passage; 2, one-way valve one; 3, one-way valve two; 4, one-way valve three.

Embodiment

Below be specific embodiment of the present invention and combine accompanying drawing, technological scheme of the present invention is done further to describe, but the present invention is not limited to these embodiments.

Embodiment one

As depicted in figs. 1 and 2, this canister threeway connection set comprises connecting body 1 and the one-way valve with three interfaces.The linkage structure of this canister threeway connection set in the gasoline supercharging car comprises corresponding pipeline in three interfaces in the canister threeway connection set and the canister desorption loop is connected.

Specifically, like Fig. 1, Fig. 2 and shown in Figure 5, connecting body 1 comprises pedestal 1a and the top cover 1b that is sealedly and fixedly connected with pedestal 1a; The first interface 1c is positioned at top cover 1b; The second interface 1d and the 3rd interface 1e all are positioned at pedestal 1a.The second interface 1d and the 3rd interface 1e that present embodiment provides are located along the same line, and the first interface 1c and the second interface 1d are perpendicular.

Between the first interface 1c and the second interface 1d through medium is connected from the one-way valve 1 that the first interface 1c flows to the second interface 1d.The second interface 1d is connected through venturi passage 1f with the 3rd interface 1e; Venturi passage 1f comprises inlet taper, cylindrical shape throat and outlet flaring portion; The outlet flaring portion large port of venturi passage 1f is connected with the 3rd interface 1e.Between the outlet flaring portion portlet place of the first interface 1c and venturi passage 1f through medium is connected from the one-way valve 23 that the first interface 1c flows to the outlet flaring portion of venturi passage 1f.

Have two grooves on the junction surface of pedestal 1a and top cover 1b, one-way valve 1 and one-way valve 23 and two corresponding one by one settings of groove.One-way valve 1 all is fixed in the pedestal 1a with one-way valve 23.

The cylindrical shape throat diameter of venturi passage 1f is 1.5~2.5mm.According to the air inflow of motor, can calculate above-mentioned data according to the correlation formula of " venturi " effect.

When pressure reduction was greater than 70~200Pa between the import of one-way valve 1 and the outlet, one-way valve 1 was in connected state.When pressure reduction was greater than 70~200Pa between the import of one-way valve 23 and the outlet, described one-way valve 23 was in connected state.The cracking pressure value of one-way valve 1 and one-way valve 23 is basic identical.

The gasoline supercharging car comprises canister, canister control valve, pressurized machine, intake manifold and above-mentioned canister threeway connection set.The linkage structure of this canister threeway connection set in the gasoline supercharging car comprises that the first interface 1c of canister threeway connection set is connected with canister through canister control valve; The outlet flaring portion large port of the venturi passage 1f of canister threeway connection set is connected with the 3rd interface 1e; The second interface 1d of canister threeway connection set is connected with intake manifold; The 3rd interface 1e of canister threeway connection set is connected with the suction port of pressurized machine.

During the vehicle idling operation, because of the negative pressure in the engine air inlet tube is bigger, this negative pressure conducts to the first interface 1c place by the second interface 1d, one-way valve 1; Mixed gas in the canister gets into the first interface 1c through canister control valve, passes through the one-way valve 1 and the second interface 1d then successively, gets into engine intake manifold, sucks cylinder combustion and burns.One-way valve 23 prevents the interior gas backstreaming of pipeline to the first interface 1c place, and completion is to the desorption of canister.When the pressure reduction between the second interface 1d and the first interface 1c was big, one-way valve 23 also possibly be in opening state, passed through the one-way valve 23 and the second interface 1d simultaneously successively, got into engine intake manifold.

Vehicle pressure because of the pressure ratio pressurized machine suction port place of engine intake manifold when low speed, high speed operation is high, has portion gas to flow to pressurized machine suction port place through the second interface 1d, venturi passage 1f and the 3rd interface 1e, is pressurized device and sucks in the motor.This moment is because " venturi " effect; To produce a bigger negative pressure in the outlet port of one-way valve 23; Conduct to the first interface 1c place through one-way valve 23, the mixed gas in the canister gets into the first interface 1c through canister control valve; Pass through outlet flaring portion and the 3rd interface 1e of one-way valve 23, venturi passage 1f then successively, suck the motor internal combustion by pressurized machine again and burn.One-way valve 1 prevents gas backstreaming to the first interface 1c place in the pipeline, accomplishes the desorption to canister.

Embodiment two

Like Fig. 3 and shown in Figure 4, present embodiment is basic identical with embodiment one structure and principle, and different place is: between the first interface 1c and the 3rd interface 1e through medium is connected from the one-way valve 34 that the first interface 1c flows to the 3rd interface 1e.When pressure reduction was greater than 70~200Pa between the import of one-way valve 34 and the outlet, described one-way valve 34 was in connected state.One-way valve 34 is basic identical with the cracking pressure value of one-way valve 1.Also have on the junction surface of pedestal 1a and top cover 1b with groove, one-way valve 34 is fixed in the above-mentioned groove of pedestal 1a.

During the vehicle idling operation; When the pressure reduction between the second interface 1d and the first interface 1c is big; And then import and the pressure reduction between the outlet that can make one-way valve 34 are during greater than one-way valve 34 cracking pressure values; Mixed gas in the canister passes through one-way valve 34, venturi passage 1f and the second interface 1d simultaneously, gets into engine intake manifold, sucks cylinder combustion and burns.

Vehicle pressure because of the pressure ratio pressurized machine suction port place of engine intake manifold when low speed, high speed operation is high; And if the import of one-way valve 34 with export between pressure reduction during greater than one-way valve 34 cracking pressure values; Mixed gas in the canister passes through one-way valve 34 and the 3rd interface 1e simultaneously; Flow to pressurized machine suction port place, be pressurized device and suck in the motor.

Obviously, the limit flow value that one-way valve 34 has increased mixed gas is set, and then can improves the efficient of canister desorption.

Specific embodiment described herein only is that the present invention's spirit is illustrated.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.

Although this paper has used connecting body 1 morely; Pedestal 1a; Top cover 1b; The first interface 1c; The second interface 1d; The 3rd interface 1e; Venturi passage 1f; One-way valve 1; One-way valve 23; One-way valve 34 terms such as grade, but do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; It all is contrary with spirit of the present invention being construed to any additional restriction to them.

Claims (10)

1. canister threeway connection set; Comprise connecting body (1) with three interfaces; It is characterized in that, between described first interface (1c) and second interface (1d) through medium is connected from the one-way valve one (2) that first interface (1c) flows to second interface (1d); Described second interface (1d) is connected through venturi passage (1f) with the 3rd interface (1e); Described venturi passage (1f) comprises inlet taper, cylindrical shape throat and outlet flaring portion, and the outlet flaring portion large port of described venturi passage (1f) is connected with the 3rd interface (1e); Between the outlet flaring portion portlet place of described first interface (1c) and venturi passage (1f) through medium is connected from the one-way valve two (3) that first interface (1c) flows to the outlet flaring portion of venturi passage (1f).
2. canister threeway connection set according to claim 1 is characterized in that the cylindrical shape throat diameter of described venturi passage (1f) is 1.5~2.5mm.
3. canister threeway connection set according to claim 1 is characterized in that, between described first interface (1c) and the 3rd interface (1e) through medium is connected from the one-way valve three (4) that first interface (1c) flows to the 3rd interface (1e).
4. according to claim 1 or 2 or 3 described canister threeway connection sets, it is characterized in that when pressure reduction was greater than 70~200Pa between the import of described one-way valve one (2) and the outlet, described one-way valve one (2) was in connected state.
5. according to claim 1 or 2 or 3 described canister threeway connection sets, it is characterized in that when pressure reduction was greater than 70~200Pa between the import of described one-way valve two (3) and the outlet, described one-way valve two (3) was in connected state.
6. according to claim 1 or 2 or 3 described canister threeway connection sets, it is characterized in that when pressure reduction was greater than 70~200Pa between the import of described one-way valve three (4) and the outlet, described one-way valve three (4) was in connected state.
7. canister threeway connection set according to claim 3 is characterized in that, the cracking pressure value of described one-way valve one (2), one-way valve two (3) and one-way valve three (4) is basic identical.
8. canister threeway connection set according to claim 3 is characterized in that, described connecting body (1) comprises pedestal (1a) and the top cover (1b) that is sealedly and fixedly connected with pedestal (1a); Described first interface (1c) is positioned at top cover (1b); Described second interface (1d) and the 3rd interface (1e) all are positioned at pedestal (1a); Described one-way valve one (2), one-way valve two (3) and one-way valve three (4) are fixed in the pedestal (1a).
9. canister threeway connection set according to claim 8; It is characterized in that; Have three grooves on the junction surface of described pedestal (1a) and top cover (1b), described one-way valve one (2), one-way valve two (3) and one-way valve three (4) and three corresponding one by one settings of groove.
10. the above-mentioned linkage structure of canister threeway connection set in the gasoline supercharging car is characterized in that described gasoline supercharging car comprises canister, canister control valve, pressurized machine, intake manifold and canister threeway connection set; Described linkage structure comprises that first interface (1c) of canister threeway connection set is connected with canister through canister control valve; Second interface (1d) of described canister threeway connection set is connected with intake manifold; The 3rd interface (1e) of described canister threeway connection set is connected with the suction port of pressurized machine.
CN2012100471937A 2012-02-28 2012-02-28 Carbon tank three-way connecting device and connecting structure thereof in supercharged gasoline motor car CN102588154A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012100471937A CN102588154A (en) 2012-02-28 2012-02-28 Carbon tank three-way connecting device and connecting structure thereof in supercharged gasoline motor car

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105464845A (en) * 2016-01-19 2016-04-06 河北亚大汽车塑料制品有限公司 Fuel steam venturi connector and fuel steam discharging control system
CN105508085A (en) * 2016-01-19 2016-04-20 河北亚大汽车塑料制品有限公司 Fuel steam Venturi valve and fuel steam discharging control system
CN105971775A (en) * 2016-07-13 2016-09-28 郦强 Integrated H-shaped jet injection valve device
CN107829850A (en) * 2017-10-30 2018-03-23 安徽江淮汽车集团股份有限公司 A kind of canister breathing connecting line and a kind of canister breathing attachment means
WO2019195564A1 (en) * 2018-04-06 2019-10-10 Continental Powertrain USA, LLC Vapor purge system having venturi hose-off detection capability
WO2019195556A1 (en) * 2018-04-06 2019-10-10 Continental Powertrain USA, LLC Three-port turbo purge module

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JPH04237860A (en) * 1991-01-21 1992-08-26 Toyota Motor Corp Evaporated fuel processor
JPH07293357A (en) * 1994-04-26 1995-11-07 Toyota Motor Corp Vapor fuel treatment device for internal combustion engine
US20110023837A1 (en) * 2009-03-06 2011-02-03 Ford Global Technologies, Llc Fuel vapor purging diagnostics
CN201934212U (en) * 2010-11-19 2011-08-17 浙江豪情汽车制造有限公司 Carbon canister device for gasoline engine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4046120A (en) * 1974-09-27 1977-09-06 Laprade Bernard Regulating system with electromagnetic valve and control valve
US4168686A (en) * 1976-10-04 1979-09-25 Toyota Jidosha Kogyo Kabushiki Kaisha Apparatus for preventing the discharge of evaporated fuel gas
JPH04237860A (en) * 1991-01-21 1992-08-26 Toyota Motor Corp Evaporated fuel processor
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CN201934212U (en) * 2010-11-19 2011-08-17 浙江豪情汽车制造有限公司 Carbon canister device for gasoline engine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105464845A (en) * 2016-01-19 2016-04-06 河北亚大汽车塑料制品有限公司 Fuel steam venturi connector and fuel steam discharging control system
CN105508085A (en) * 2016-01-19 2016-04-20 河北亚大汽车塑料制品有限公司 Fuel steam Venturi valve and fuel steam discharging control system
CN105971775A (en) * 2016-07-13 2016-09-28 郦强 Integrated H-shaped jet injection valve device
CN107829850A (en) * 2017-10-30 2018-03-23 安徽江淮汽车集团股份有限公司 A kind of canister breathing connecting line and a kind of canister breathing attachment means
CN107829850B (en) * 2017-10-30 2019-11-26 安徽江淮汽车集团股份有限公司 A kind of canister breathing connecting line and a kind of canister breathe attachment device
WO2019195564A1 (en) * 2018-04-06 2019-10-10 Continental Powertrain USA, LLC Vapor purge system having venturi hose-off detection capability
WO2019195556A1 (en) * 2018-04-06 2019-10-10 Continental Powertrain USA, LLC Three-port turbo purge module

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