JP2583028Y2 - Carbon canister - Google Patents

Carbon canister

Info

Publication number
JP2583028Y2
JP2583028Y2 JP1992088127U JP8812792U JP2583028Y2 JP 2583028 Y2 JP2583028 Y2 JP 2583028Y2 JP 1992088127 U JP1992088127 U JP 1992088127U JP 8812792 U JP8812792 U JP 8812792U JP 2583028 Y2 JP2583028 Y2 JP 2583028Y2
Authority
JP
Japan
Prior art keywords
chamber
fuel
liquid
carbon canister
liquid reservoir
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP1992088127U
Other languages
Japanese (ja)
Other versions
JPH0647654U (en
Inventor
雄司 千野
Original Assignee
株式会社テネックス
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社テネックス filed Critical 株式会社テネックス
Priority to JP1992088127U priority Critical patent/JP2583028Y2/en
Publication of JPH0647654U publication Critical patent/JPH0647654U/en
Application granted granted Critical
Publication of JP2583028Y2 publication Critical patent/JP2583028Y2/en
Active legal-status Critical Current

Links

Description

【考案の詳細な説明】[Detailed description of the invention]
【0001】[0001]
【産業上の利用分野】本考案は、カーボンキャニスタに
係り、特に再液化した蒸発燃料を気化させて出口から機
関の吸気通路へ放出させるカーボンキャニスタに関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carbon canister and, more particularly, to a carbon canister which vaporizes reliquefied fuel vapor and discharges the fuel from an outlet to an intake passage of an engine.
【0002】[0002]
【従来の技術】車両等に燃料を給油する際には、燃料タ
ンクの給油口から多量の蒸発燃料が放散する。また、車
両走行時や駐車時にも燃料タンク等から燃料が蒸発す
る。このため、車両にはこれら蒸発燃料を大気に放散さ
せないようにカーボンキャニスタを設けてある。特に近
年、燃料タンクとカーボンキャニスタとを連結する通路
内で蒸発燃料が再液化し、液状のままカーボンキャ
タに流入して充填された活性炭等の吸着剤を濡らし、そ
の吸着性能を低下させることを防止するため、カーボン
キャスタに液状燃料を捕集する液溜め室を備えたもの
が用いられている。
2. Description of the Related Art When fuel is supplied to a vehicle or the like, a large amount of fuel vapor evaporates from a fuel filler port of a fuel tank. Also, fuel evaporates from the fuel tank and the like when the vehicle is running or when parking. For this reason, the vehicle is provided with a carbon canister so as not to dissipate these evaporated fuels to the atmosphere. In recent years, a fuel tank and a carbon canister fuel vapor in the passageway to re-liquefy connecting, wet adsorbent such as activated carbon is filled to flow into the left carbon calibration double scan <br/> other liquid, the to prevent lowering the adsorption performance, those with a liquid reservoir chamber for trapping liquid fuel to carbon <br/> calibration two Star is used.
【0003】このようなカーボンキャニスタとして、例
えば特開平3−47455号公報に示されるものがあ
る。カーボンキャニスタは、吸着タンクの上壁に捕集室
が設けられたもので、捕集室は内部が側壁で区画され、
天井部には区画された一方側にタンクポートが他方側に
パージポートが各々設けられており、一方側には底部に
吸着タンクと連通する流入筒状体が立設され、底部には
捕集材が配置されている。そしてタンクポートから流入
する液状燃料を捕集室の捕集材に捕集させ、吸着タンク
内に液状燃料を流入させことなく蒸発燃料だけを導入
させるものである。
[0003] Such a carbon canister is disclosed in, for example, Japanese Patent Application Laid-Open No. 3-47455. The carbon canister has a collection chamber provided on the upper wall of the adsorption tank.
A tank port is provided on one side and a purge port is provided on the other side on the ceiling, and an inflow cylindrical body communicating with the adsorption tank is provided on the bottom on one side, and a collection port is provided on the bottom. Materials are arranged. And a liquid fuel flowing from the tank port is collected in the collecting material of the collecting chamber, it is intended to introduce only the fuel vapor without Ru allowed to flow into the liquid fuel in the suction tank.
【0004】[0004]
【考案が解決しようとする課題】ところで、上記従来の
カーボンキャニスタにあって、タンクポートから流入す
る蒸発燃料が吸着タンクを介さず出口筒状体側へ流れる
のを防ぐため、捕集室内は側壁で仕切られており、捕集
室に捕集された液状燃料は捕集室に貯溜され、捕集室が
液状燃料で満されると流入筒状体から吸着タンク内に流
れ込み、充填された吸着剤を湿潤させ、蒸発燃料に対す
る吸着力を低下させる。
By the way, in the above-mentioned conventional carbon canister, in order to prevent the evaporated fuel flowing from the tank port from flowing toward the outlet cylindrical body without passing through the adsorption tank, the collecting chamber has a side wall. The liquid fuel collected in the collecting chamber is stored in the collecting chamber. When the collecting chamber is filled with the liquid fuel, the liquid fuel flows from the inflow cylindrical body into the adsorption tank, and the charged adsorbent is filled. To reduce the adsorption power to the evaporated fuel.
【0005】本考案は上記の点に鑑みてなされたもの
で、貯溜された液体燃料を気化させて除去し、カーボン
キャニスタに充填された吸着剤を湿潤させることのない
カーボンキャニスタを提供するものである。
The present invention has been made in view of the above points, and provides a carbon canister that vaporizes and removes a stored liquid fuel and does not wet the adsorbent filled in the carbon canister. is there.
【0006】[0006]
【課題を解決するための手段】本考案のカーボンキャニ
スタは、内部に吸着剤を収容し一側が開口した筒状ケー
スの上壁に液溜め室を形成し、該液溜め室内にケース内
部に連通する連通筒を立設するとともに、液溜め室上壁
に該室内と連通する入、出口を並設し、さらに液溜め室
内に前記出口と入口および連通筒との間を区画する多
孔体を配設させたものである。
In the carbon canister of the present invention, a liquid reservoir is formed in the upper wall of a cylindrical case which has an adsorbent therein and is open on one side, and communicates with the liquid reservoir inside the case. with erecting communicating tube which, entering communicates with the said chamber to the liquid reservoir chamber on the wall, juxtaposed the outlet, further partitioning between the liquid reservoir the outlet chamber, the inlet and communicating tube multi
A hole is provided.
【0007】[0007]
【作用】燃料給油等で発生した蒸発燃料と、蒸発燃料が
凝縮した液状燃料が一緒に入口から導入されると、蒸発
燃料は液溜め室を経て連通筒から吸着室内に入り吸着剤
に吸着され、液状燃料は液溜め室内に貯溜される。
When the evaporative fuel generated by fuel supply and the liquid fuel in which the evaporative fuel is condensed are introduced together from the inlet, the evaporative fuel enters the adsorption chamber from the communication cylinder through the liquid reservoir and is adsorbed by the adsorbent. The liquid fuel is stored in the liquid storage chamber.
【0008】機関の負圧によって空気が一側の開口から
カーボンキャニスタ内に吸引され、吸着剤に吸着され
た蒸発燃料が脱離され出口から放出される。この時液
溜め室内に溜っていた液状燃料は、多孔体内での毛細管
現象により吸い上げられ、通過する空気によって気化さ
れ、吸着剤から脱離された蒸発燃料および空気と共に出
口から放出される。
[0008] Air by the negative pressure of the engine is sucked from one side of the opening in the carbon canister, it is adsorbed by the adsorbent
The evaporated fuel is desorbed and discharged from the outlet. At this time, the liquid fuel stored in the liquid storage chamber is converted into a capillary in the porous body.
Raised Sucking the phenomenon, is vaporized by the air passing through, it is discharged from the outlet together with the desorbed fuel vapor and air from the adsorbent.
【0009】[0009]
【実施例】以下、本考案の実施例を図面に基づいて説明
する。図1に示すカーボンキャニスタは、蒸発燃料を吸
着させる吸着剤を収容した吸着室2と、蒸発燃料の通路
と蒸発燃料が再液化した液状燃料を一時的に溜める捕集
室とを兼ねる液溜め室1とからなる。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. The carbon canister shown in FIG. 1 has an adsorption chamber 2 containing an adsorbent for adsorbing fuel vapor, a liquid reservoir chamber serving as a passage for the fuel vapor and a collecting chamber for temporarily storing liquid fuel in which the fuel vapor is reliquefied. It consists of 1.
【0010】吸着室2はポリアミド樹脂やポリエステル
樹脂等の合成樹脂製のケース3内に吸着剤としての活性
炭5が充填されたものである。ケース3は胴部材3aの
開放端に環状の開口板3bが配設されて形成される。ケ
ース3内には活性炭5が、胴部材3aの上壁4よりケー
ス3内方へ突出する複数の円柱状突起6と該突起に当接
させて配設した不織布やポリウレタン等のスクリーン部
材7と、前記開口板3bに近接させて網体板8を配設し
該網体板に当設させて配設したスクリーン部材7とに挟
まれて収容される。
The adsorption chamber 2 has a case 3 made of a synthetic resin such as a polyamide resin or a polyester resin filled with activated carbon 5 as an adsorbent. The case 3 is formed by disposing an annular opening plate 3b at the open end of the body member 3a. In the case 3, activated carbon 5 includes a plurality of cylindrical projections 6 projecting inward from the upper wall 4 of the body member 3a into the case 3, and a screen member 7 such as nonwoven fabric or polyurethane disposed in contact with the projections. The mesh plate 8 is arranged in close proximity to the opening plate 3b, and is sandwiched and accommodated by the screen member 7 provided in contact with the mesh plate.
【0011】ケース3の上壁4には、胴部材3aの径よ
りも小径の液溜め室1が形成される。液溜め室1はコッ
プ状のもので、ケース3上壁4と一体をなす円筒状の側
壁1aと該側壁の開放端部に液溜め室1上壁をなす蓋板
1bが配設され、蓋板1bには液溜め室1内に連通する
パイプ状の入口9、出口10が並設されている。液溜め
室1内には、ケース3上壁4の略中央にケース3内部と
連通する通孔があけられ該通孔を囲こみかつ側壁1a
の一部が共有されて筒状の連通筒11が立設され、さら
に液溜め室1内の入口9と出口10の間には、入口と、
出口10およびと連通筒11とを区画する多孔体12
が、蓋板1bとケース3上壁4に接して配設される。
孔体12は薄板矩形をなし、パルプ繊維ポリエステル
繊維等よりなる不織布やセラミック、焼結金属等よりな
る多孔等の通気性を備えたものが適用され、従って、
液溜め室底部に溜った液状燃料を毛細管現象で吸い上げ
るこ とができる
On the upper wall 4 of the case 3, a liquid storage chamber 1 having a diameter smaller than the diameter of the body member 3a is formed. The liquid storage chamber 1 is cup-shaped, and has a cylindrical side wall 1a integral with the upper wall 4 of the case 3 and a lid plate 1b forming the upper wall of the liquid storage chamber 1 at an open end of the side wall. On the plate 1b, a pipe-shaped inlet 9 and an outlet 10 communicating with the inside of the liquid storage chamber 1 are provided side by side. A through hole communicating with the inside of the case 3 is formed substantially in the center of the upper wall 4 of the case 3 in the liquid reservoir chamber 1, and surrounds the through hole and has a side wall 1a.
And a communication tube 11 having a cylindrical shape is provided upright. Further, between the inlet 9 and the outlet 10 in the liquid storage chamber 1, an inlet ,
Porous body 12 for partitioning outlet 10 and communication tube 11
Are disposed in contact with the lid plate 1 b and the upper wall 4 of the case 3. Many
Hole body 12 forms a thin plate rectangle, apply those with non-woven fabric or ceramic made of pulp fiber polyester fibers, the air permeability of the porous material or the like made of sintered metal or the like, therefore,
Liquid fuel collected at the bottom of the reservoir chamber is sucked up by capillary action
Can and Turkey.
【0012】燃料タンクからの蒸発燃料は該タンクと連
通された通路(図示せず)を経てカーボンキャニスタの
入口9から液溜め室1内に流入し、連通筒11から吸着
室2内に導入され活性炭5に吸着される。この時、通路
内で蒸発燃料が凝縮し再液化した液状燃料も叉、蒸発燃
料の蒸気圧によって通路内を蒸発燃料と共にカーボンキ
ャニスタ側へ流れ、入口9から液溜め室1に流れ込み該
室内に貯溜される。
The fuel vapor from the fuel tank flows into the liquid storage chamber 1 from the inlet 9 of the carbon canister through a passage (not shown) communicating with the tank, and is introduced into the adsorption chamber 2 from the communication cylinder 11. Adsorbed on activated carbon 5. At this time, the liquid fuel in which the evaporated fuel is condensed and reliquefied in the passage also flows to the carbon canister side together with the evaporated fuel in the passage due to the vapor pressure of the evaporated fuel, flows into the liquid storage chamber 1 from the inlet 9, and is stored in the chamber. Is done.
【0013】活性炭5に吸着された蒸発燃料は、車両走
行時、カーボンキャニスタの開口板3bの開口から吸い
込んだ空気によって活性炭5から脱離され、連通筒11
から液溜め室1内に吸引されて、通気性を有する多孔体
12を通り抜け出口10から機関へ放出される。液溜め
室1内に貯溜された液状燃料は、多孔体12の液体吸収
性すなわち毛細管現象によって、その一部吸い上げら
ており、多孔体12を通過する空気によって気化が促
進され、蒸気となって空気と共に出口10に運ばれる。
多孔体12内に保持された液状燃料が気化した部分に
は、貯留されている液状燃料が毛細管現象により連続的
に供給、気化され、液溜め室1内の液状燃料が順次減少
する。
The fuel vapor adsorbed on the activated carbon 5 is desorbed from the activated carbon 5 by the air sucked from the opening of the opening plate 3b of the carbon canister during running of the vehicle, and the communication cylinder 11
Is sucked into the liquid storage chamber 1 and passes through the porous body 12 having air permeability and is discharged from the outlet 10 to the engine. A part of the liquid fuel stored in the liquid storage chamber 1 is sucked up by the liquid absorbing property of the porous body 12, that is, a capillary phenomenon, and the vaporization is promoted by the air passing through the porous body 12 to become a vapor. To the outlet 10 with air.
The liquid fuel stored in the porous body 12 is continuously supplied and vaporized by a capillary phenomenon in a portion where the liquid fuel held in the porous body 12 is vaporized, and the liquid fuel in the liquid storage chamber 1 is sequentially reduced.
I do.
【0014】[0014]
【考案の効果】以上のように本考案のカーボンキャニス
タは、ケース上壁に液溜め室を形成し、液溜め室内にケ
ース内部と連通する連通筒を立設し、液溜め室上壁に
入、出口を並設し、液溜め室内に出口と入口および連
通筒を区画する多孔体を配設するようにしたので、液
溜め室内に貯溜した液状燃料が多孔体の毛細管現象によ
る吸引力で該部材に吸い上げられ、蒸発燃料の脱離の際
の空気が多孔体を通り抜ける間に気化が促進され、液溜
め室内の液状燃料の貯溜量が順次減少し、従って、液状
燃料が吸着室内に流れ込むことがなく吸着剤の吸着性が
持続されるカーボンキャニスタが得られる。また、多孔
体は、液状燃料を吸い上げるとともに通過する空気によ
り液状燃料を気化させるためのものであるので、永久的
に使用でき、バイパス手段等を必要としない。
[Effects of the Invention] As described above, the carbon canister of the present invention has a liquid reservoir chamber formed on the upper wall of the case, and a communication cylinder that communicates with the inside of the case is erected in the liquid reservoir chamber to enter the upper wall of the liquid reservoir chamber. , arranged side by side outlet, a liquid reservoir outlet chamber. Thus disposing the porous body defining an inlet and the communication tube, suction is liquid fuel which has accumulated in chamber reservoir by capillarity of the porous material in sucked into the member, the air during desorption of fuel vapor is vaporized while passing through the porous body is promoted, reservoir
As a result, a carbon canister can be obtained in which the storage amount of the liquid fuel in the chamber gradually decreases, and therefore, the liquid fuel does not flow into the adsorption chamber, and the adsorbing property of the adsorbent is maintained. Also, porous
The body sucks up liquid fuel and
Is used to vaporize liquid fuel.
And no need for bypass means.
【図面の簡単な説明】[Brief description of the drawings]
【図1】本考案のカーボンキャニスタの断面図である。FIG. 1 is a cross-sectional view of the carbon canister of the present invention.
【符号の説明】[Explanation of symbols]
1 液溜め室 3 ケース 4 上壁 9 入口 10 出口 11 連通孔 12 多孔体 DESCRIPTION OF SYMBOLS 1 Liquid storage chamber 3 Case 4 Upper wall 9 Inlet 10 Outlet 11 Communication hole 12 Porous body

Claims (1)

    (57)【実用新案登録請求の範囲】(57) [Scope of request for utility model registration]
  1. 【請求項1】 内部に吸着剤を収容し一側が開口した筒
    状ケースの上壁に液溜め室を形成し、該液溜め室内に
    ース内部に連通する連通筒を立設するとともに、液溜め
    室上壁に該室内と連通する入、出口を並設し、さらに
    溜め室内に前記出口と入口および連通筒との間を区画
    する多孔体を配設してなるカーボンキャニスタ。
    1. A forming the wall liquid reservoir to chamber on the inside cylindrical case that houses and one side is open to the adsorbent, the communication tube communicating with the interior Ke <br/> over scan in the liquid reservoir chamber standing compartment as well as setting, input communicates with the said chamber to the liquid reservoir chamber on the wall, arranged side by side outlets, and further the liquid reservoir the outlet chamber, between the inlet and the communication tube
    Carbon canister formed by disposing a porous body.
JP1992088127U 1992-11-30 1992-11-30 Carbon canister Active JP2583028Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1992088127U JP2583028Y2 (en) 1992-11-30 1992-11-30 Carbon canister

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1992088127U JP2583028Y2 (en) 1992-11-30 1992-11-30 Carbon canister

Publications (2)

Publication Number Publication Date
JPH0647654U JPH0647654U (en) 1994-06-28
JP2583028Y2 true JP2583028Y2 (en) 1998-10-15

Family

ID=13934253

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1992088127U Active JP2583028Y2 (en) 1992-11-30 1992-11-30 Carbon canister

Country Status (1)

Country Link
JP (1) JP2583028Y2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6481030B2 (en) * 2015-07-01 2019-03-13 ヤマハモーターパワープロダクツ株式会社 Fuel cap

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0347455A (en) * 1989-07-12 1991-02-28 Nippondenso Co Ltd Vaporized fuel processing device
JP2882015B2 (en) * 1990-09-10 1999-04-12 トヨタ自動車株式会社 Evaporative fuel processing equipment

Also Published As

Publication number Publication date
JPH0647654U (en) 1994-06-28

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