JPH0616816Y2 - Fuel tank fuel vapor treatment device - Google Patents
Fuel tank fuel vapor treatment deviceInfo
- Publication number
- JPH0616816Y2 JPH0616816Y2 JP1988025204U JP2520488U JPH0616816Y2 JP H0616816 Y2 JPH0616816 Y2 JP H0616816Y2 JP 1988025204 U JP1988025204 U JP 1988025204U JP 2520488 U JP2520488 U JP 2520488U JP H0616816 Y2 JPH0616816 Y2 JP H0616816Y2
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- passage
- tank
- fuel tank
- refueling
- 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.)
- Expired - Lifetime
Links
Landscapes
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） この考案は車両用燃料タンクにおける燃料蒸気の処理装
置主として給油時に生じる燃料蒸気を処理するための装
置に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a device for treating fuel vapor in a vehicle fuel tank, mainly to a device for treating fuel vapor generated during refueling.
（従来の技術） これまでに、車両に組み込まれている燃料蒸気の処理装
置の一例を示せば第４図のとおりであり、燃料タンク１
の上部空間と主カーボンキヤニスタ２とを途中に二方向
弁（逆止弁）３ａおよび非常用遮断弁３ｂを配置した第
１ベンチレーション通路ｌ１で結び、車両の停止時や走
行時に燃料タンク１内に生じる燃料蒸気を主カーボンキ
ヤニスタ２に送り込む第１のチヤージ機構と、タンクの
入口管１ａへの給油ノズルの挿入、抜き取りによりスイ
ッチｓを介し開閉する電磁弁５を途中に備えた第２ベン
チレーション通路ｌ２によりタンク内の上部空間を副カ
ーボンキヤニスタ４に結び、タンク１への給油時に生じ
る燃料蒸気を副カーボンキヤニスタ４に送り込む第２の
チヤージ機構、ならびに主、副のカーボンキヤニスタ
２，４をパージ通路ｌ３と負圧導入通路ｌ４とでエンジ
ンの吸気管に結び、エンジンの負荷に伴う吸気負圧によ
ってカーボンキヤニスタ２，４中の吸着燃料を離脱させ
て、吸気管に送り込むパージ機構、給油時に入口管１ａ
中に生じる負圧解消のためタンク内の蒸気の一部を入口
管１ａに送り込む戻し通路８などで構成されている。(Prior Art) An example of a fuel vapor processing device incorporated in a vehicle up to now is as shown in FIG.
Is connected to the main carbon canister 2 by a first ventilation passage l 1 in which a two-way valve (check valve) 3a and an emergency shutoff valve 3b are arranged in the middle of the fuel tank when the vehicle is stopped or running. A first charge mechanism for sending the fuel vapor generated in 1 to the main carbon canister 2 and a solenoid valve 5 for opening and closing via a switch s by inserting and extracting a fueling nozzle into the inlet pipe 1a of the tank The second charge mechanism that connects the upper space in the tank to the sub carbon canister 4 by the 2 ventilation passages l 2 and sends the fuel vapor generated during refueling of the tank 1 to the sub carbon canister 4, as well as the main and sub carbon The canisters 2 and 4 are connected to the intake pipe of the engine by the purge passage l 3 and the negative pressure introduction passage l 4, and the carbon negative is caused by the intake negative pressure due to the load of the engine. Purge mechanism for releasing the adsorbed fuel in the nisters 2 and 4 and sending it to the intake pipe, the inlet pipe 1a during refueling
It is composed of a return passage 8 for sending a part of the vapor in the tank to the inlet pipe 1a for eliminating the negative pressure generated therein.
そして、第２ベンチレーション通路ｌ２の基端はタンク
１の上部空間に突出していて、そこには筒状ボデー６中
にフロート７を収容した液面感知バルブｖが設けられ、
給油による液面の上昇に伴ってフロート７が上昇し、満
タン付近になるとフロート７がボデー６のテーパシート
面６ａに当接して第２ベンチレーション通路ｌ２を閉じ
る一方、入口管１ａ中の液面が上昇し、これを給油ノズ
ルの先端が感知して給油を自動的に止めるようにしてい
る。The base end of the second ventilation passage l 2 projects into the upper space of the tank 1, and a liquid level sensing valve v accommodating the float 7 in the cylindrical body 6 is provided therein.
With increasing liquid level by fueling the float 7 rises, full becomes near the float 7 while closing the second ventilation passage l 2 abuts against the tapered seat surface 6a of the body 6, in the inlet pipe 1a The liquid level rises, and the tip of the refueling nozzle senses this and automatically stops refueling.
（考案が解決しようとする課題） ところで、上記従来装置では液面感知バルブがタンク中
に設けられ、タンク内の液面上昇に伴ってフロートとシ
ート面の間の隙間面積が漸次小さくなる構造になってい
るので、ノズルによる給油速度が一般的な市場レベル
（30〜60／分）であると、燃料蒸気の出口が次第に
細まるに拘らず給油速度が速く、タンク内圧が高まり、
満タン以前に入口管中の液面が上昇し、これを給油ノズ
ルが感知して給油を停止してしまい、燃料タンクの容積
を有効に使用できなかった。(Problems to be solved by the invention) By the way, in the above-mentioned conventional device, the liquid level sensing valve is provided in the tank, and the clearance area between the float and the seat surface becomes gradually smaller as the liquid level in the tank rises. Therefore, if the refueling speed by the nozzle is at a general market level (30 to 60 / min), the refueling speed will be high and the tank internal pressure will increase despite the fuel vapor outlet gradually narrowing,
Before the tank was full, the liquid level in the inlet pipe rose, and the refueling nozzle sensed this and stopped refueling, making it impossible to effectively use the volume of the fuel tank.
この実情に鑑み、この考案は工夫されたもので、燃料タ
ンクへの給油率を向上できるようにした燃料蒸気の処理
装置を提供するものである。In view of this situation, the present invention has been devised, and provides a fuel vapor processing device capable of improving the fuel supply rate to the fuel tank.
（課題を解決するための手段ならびに作用） 上記目的達成のために、この考案は、燃料タンクの上部
空間を途中に給油ノズルの挿入，抜き取りで開閉する弁
を設けた第２ベンチレーション通路により副カーボンキ
ヤニスタに結び、給油時の燃料蒸気を副カーボンキヤニ
スタに吸着させる燃料蒸気の処理装置として、第２ベン
チレーション通路の途中で、燃料タンクの外側にバルブ
本体を配設し、バルブ本体の内部を、天井壁との間に若
干の隙間をおく縦仕切により蒸気室をなす狭い部分と広
い部分に区分すると共に、広い部分は中央部にテーパシ
ート面を有する環状の横仕切によって上の拡張室と下の
フロート室に二分し、フロート室内にはフロートを収容
し、フロート室を第２ベンチレーション通路の一部をな
す前通路で燃料タンクに連結する一方、戻し通路で燃料
タンクの入口管に連結し、また、蒸気室を第２ベンチレ
ーション通路の後通路で副カーボンキヤニスタに連結さ
せたことを特徴とするものである。(Means and Actions for Solving the Problem) In order to achieve the above object, the present invention uses a second ventilation passage provided with a valve that opens and closes by inserting and extracting a fueling nozzle in the upper space of the fuel tank. As a device for treating fuel vapor that is connected to a carbon canister and causes fuel vapor during refueling to be adsorbed by the sub-carbon canister, a valve body is disposed outside the fuel tank in the middle of the second ventilation passage, The interior is divided into a narrow part that forms the steam chamber and a wide part by a vertical partition with a slight gap between it and the ceiling wall, and the wide part is expanded upward by an annular horizontal partition with a tapered seat surface in the center. Chamber and lower float chamber are divided into two parts, the float chamber accommodates the float, and the float chamber is connected to the fuel tank by the front passage forming part of the second ventilation passage. On the other hand, the return passage is connected to the inlet pipe of the fuel tank, and the steam chamber is connected to the sub carbon canister at the rear passage of the second ventilation passage.
給油に当たり、入口管に給油ノズルを差し込めば、弁が
開かれ、タンク内に燃料が注入されその液面が上昇して
いく一方、タンク内に生じる燃料蒸気は前通路を通って
バルブ本体のフロート室に入り、その大部分はフロート
室を経て副カーボンキヤニスタ側に流れ、一部は戻し通
路を通って入口管に入り、入口管内の負圧が解消され
る。When refueling, if you insert the refueling nozzle into the inlet pipe, the valve will open, the fuel will be injected into the tank and the liquid level will rise, while the fuel vapor generated in the tank will pass through the front passage and float on the valve body. Most of the gas enters the chamber, flows through the float chamber to the sub carbon canister side, and a part of the gas flows into the inlet pipe through the return passage, and the negative pressure in the inlet pipe is released.
かくて、タンク内の液面が前通路の下端に達し、更に給
油を継続すれば、タンク内圧の関係で燃料が前通路を通
ってフロート室に入り、遂には戻し通路のラインに達
し、戻し通路を経て入口管に戻る。このように循環し出
すと、入口管内の液面が所定のラインに達しないうちに
しぶきでノズル先端が液面を感知することになって給油
を止める。その後再給油を行えば、タンク内および入口
管内の液面が徐々に上昇すると共にフロート室内も燃料
で満たされ、フロートが浮上してテーパシート面に圧接
し、第２ベンチレーション通路を閉じ、また、入口管内
の所定レベルの液面をノズルが感知して給油を止める。Thus, if the liquid level in the tank reaches the lower end of the front passage and fueling is continued further, the fuel enters the float chamber through the front passage due to the tank internal pressure, and finally reaches the return passage line and returns. Return to the entrance pipe through the passage. When the liquid is circulated in this manner, the nozzle tip senses the liquid level by splashing before the liquid level in the inlet pipe reaches the predetermined line, and the refueling is stopped. If refueling is then performed, the liquid level in the tank and the inlet pipe gradually rises and the float chamber is also filled with fuel, and the float floats and comes into pressure contact with the tapered seat surface, closing the second ventilation passage, and The nozzle detects the liquid level at a predetermined level in the inlet pipe and stops refueling.
（実施例） 第１図ないし第３図はこの考案の実施例を示すが、燃料
タンク１１の上部空間は途中に二方向弁１３ａと非常用
遮断弁１３ｂを設けた第１ベンチレーション通路ｌ１に
よって主カーボンキヤニスタ１２に連結して、車両の停
止時や走行時に燃料タンク１１内に生じる燃料蒸気を主
カーボンキヤニスタ１２にチヤージするようになし、ま
た、途中に電磁弁１５を備え、これを入口管１１ａに対
する給油ノズルｎの挿入、抜き取りにより開閉する入口
管上のスイッチｓにより作動するようにした第２ベンチ
レーション通路ｌ２でタンク１１の上部空間を副カーボ
ンキヤニスタ１４に結び、給油時にタンク１１内に生じ
る燃料蒸気を副カーボンキヤニスタ１４にチヤージさ
せ、エンジン負荷に伴う吸気負圧によって主、副のカー
ボンキヤニスタ１２，１４中の吸着燃料を離脱させて、
吸気管に送り込むようにした構成は前記従来のものと変
りない。(Embodiment) FIG. 1 to FIG. 3 show an embodiment of the present invention, in which the upper space of the fuel tank 11 is provided with a two-way valve 13a and an emergency shutoff valve 13b in the first ventilation passage 11 The main carbon canister 12 is connected to the main carbon canister 12 so as to charge the fuel vapor generated in the fuel tank 11 to the main carbon canister 12 when the vehicle is stopped or running, and the solenoid valve 15 is provided on the way. Is connected to the sub-carbon canister 14 by connecting the upper space of the tank 11 to the sub-carbon canister 14 by a second ventilation passage l 2 which is operated by a switch s on the inlet pipe which is opened and closed by inserting and removing the oil supply nozzle n from the inlet pipe 11a. Fuel vapor that sometimes occurs in the tank 11 is charged into the sub carbon canister 14, and the main and sub carbon keys are generated by the intake negative pressure accompanying the engine load. The adsorption fuel in Nisuta 12, 14 is detached,
The structure in which the air is fed into the intake pipe is the same as the conventional one.
ところで、この考案では第２ベンチレーション通路ｌ２
の基端は燃料タンク１１の上部空間中に所要長さ突出し
ているが、そこには液面感知用のバルブｖは連設されて
おらず、バルブｖは燃料タンク１１の外側上方に配設さ
れていて、その筒状のバルブ本体１６の内部は第２図，
第３図にみられるように一側寄りにおいて天井壁との間
に少許の隙間を持った縦仕切１９によって狭い部分と広
い部分とに区分され、狭い部分は蒸気室１６ｃをなし、
広い部分は中央より若干上方位置に設けた環状の横仕切
２０によって上下に二分され、上側は液滴分離用の拡張
室１６ｂをなし、下側はフロート室１６ａをなしてい
る。By the way, in this invention, the second ventilation passage l 2
The base end of the valve protrudes into the upper space of the fuel tank 11 by a required length, but there is no continuous liquid level sensing valve v there, and the valve v is disposed above the outside of the fuel tank 11. The inside of the tubular valve body 16 is shown in FIG.
As shown in FIG. 3, it is divided into a narrow portion and a wide portion by a vertical partition 19 having a small clearance between the side wall and the ceiling wall, and the narrow portion forms a steam chamber 16c.
The wide part is divided into upper and lower parts by an annular lateral partition 20 provided slightly above the center, and the upper part forms a droplet separation expansion chamber 16b and the lower part forms a float chamber 16a.
フロート室１６ａ中にはフロート１７（これは燃料液面
より若干頭部を出すような比重に設定されている）と非
常用のウエイトボール２１が収容され、これらは底壁上
に設けられた環状のガイド壁２２によって囲まれると共
にウエイトボール２１は受け台２３の円錐凹所によって
支持されており、フロート１７の上端は環状横仕切２０
の通孔の部分に形成されたテーパシート面２０ａに対向
している。In the float chamber 16a, a float 17 (which is set to have a specific gravity so that its head is slightly above the fuel surface) and an emergency weight ball 21 are housed, and these are annular rings provided on the bottom wall. The weight ball 21 is supported by the conical recess of the pedestal 23, and the upper end of the float 17 is surrounded by the annular lateral partition 20.
It faces the taper sheet surface 20a formed in the through hole portion.
そして、フロート室１６ａは底部一側の入口において第
２ベンチレーション通路ｌ２の一半部をなす前通路ｌ
２ａによって燃料タンク１１の上部空間中に連通すると
共に横仕切２０よりやや下方の位置において戻し通路１
８によってタンクの入口管１１ａに連通しており、ま
た、蒸気室１６ｃの出口は第２ベンチレーション通路ｌ
２の他半部をなす後通路ｌ２ｂによって副カーボンキヤ
ニスタ１４に連通している。Further, the float chamber 16a has a front passage l forming a half of the second ventilation passage l 2 at the inlet on one side of the bottom portion.
2a communicates with the upper space of the fuel tank 11 and at a position slightly below the horizontal partition 20, the return passage 1
8 communicates with the inlet pipe 11a of the tank, and the outlet of the steam chamber 16c is connected to the second ventilation passage l.
The rear passage l 2b forming the other half of the second passage 2 communicates with the sub carbon canister 14.
なお、電磁弁１５で第２ベンチレーション通路ｌ２を開
閉するのに代えて、機械的な挿入弁を入口管１１ａに設
け、これに第２ベンチレーション通路ｌ２の後通路ｌ
２ｂに連設し、給油ノズルｎの差し込みによって挿入弁
を操作し、第２ベンチレーション通路ｌ２を開閉するよ
うにしてもよい。Instead of opening and closing the second ventilation passage l 2 with the solenoid valve 15, a mechanical insertion valve is provided in the inlet pipe 11 a, and a rear passage l of the second ventilation passage l 2 is provided in this.
And continuously to 2b, by operating the inserted valve by insertion of the fueling nozzle n, it may be open and close the second ventilation passage l 2.
そこで、給油のため燃料タンク１１の入口管１１ａに給
油ノズルｎを差し込めば、入口管１１ａ上のスイッチｓ
を介して通路途中の電磁弁１５が開かれ、タンク１１内
には燃料が早い速度（30ｍ〜60ｍ／分程度）で注入され
て、その液面が上昇していく一方、タンク内に存在しま
たは給油動作で生成する燃料蒸気が、第２ベンチレーシ
ョン通路ｌ２の前通路ｌ２ａを通って、先ずバルブ本体
１６のフロート室１１６ａに入り、その大分部は横仕切
２０の通孔から拡張室１６ｂに入り、次いで縦仕切１９
を乗り越えて蒸気室１６ｃに流入し、後通路ｌ２ｂを通
って副カーボンキヤニスタ１４にチヤージされる。Therefore, if the refueling nozzle n is inserted into the inlet pipe 11a of the fuel tank 11 for refueling, the switch s on the inlet pipe 11a
The solenoid valve 15 in the middle of the passage is opened via the fuel tank, the fuel is injected into the tank 11 at a high speed (about 30 to 60 m / min), and the liquid level rises while the fuel is present in the tank. or fuel vapor generated in the fuel supply operation, through the second front passage l 2a ventilation passage l 2, first enters the float chamber 116a of the valve body 16, the Oita unit expansion chamber from the through hole of the transverse partition 20 16b, then vertical partition 19
Flows into the steam chamber 16c overcame is Chiyaji through the rear passage l 2b to secondary carbon wire carrier Nisuta 14.
この際、燃料蒸気が拡張室１６ｂに入りかつ縦仕切１９
を乗り越える過程で、蒸気中に含まれている霧化状態の
燃料が分離されて壁面に付着しそれが次第に凝集し液滴
となって流れタンク側に戻される。この場合、横仕切２
０の上面を点線のように通孔に向かって傾けておけば、
より効果的である。At this time, the fuel vapor enters the expansion chamber 16b and the vertical partition 19
In the process of overcoming, the atomized fuel contained in the vapor is separated and adheres to the wall surface, gradually aggregating into droplets and returning to the tank side. In this case, horizontal partition 2
If you incline the upper surface of 0 toward the through hole like the dotted line,
More effective.
また、フロート室１６ａに入った燃料蒸気の一部は戻し
通路１８を通って入口管１１ａに流入し、給油時に入口
管１１ａ中に生じる負圧をバランスさせる。Further, a part of the fuel vapor that has entered the float chamber 16a flows into the inlet pipe 11a through the return passage 18 and balances the negative pressure generated in the inlet pipe 11a during refueling.
かくて、タンク内の液面が前通路ｌ２ａの下端に達し、
更に給油が続けられれば、タンクの内圧の関係で液体燃
料は前通路ｌ２ａを通ってバルブ本体１６のフロート室
１６ａに入り、遂には戻し通路１８のラインに達し、戻
し通路１８を経て入口管１１ａに戻ることになる。Thus, the liquid level in the tank reaches the lower end of the front passage 12a ,
If refueling is further continued, the liquid fuel enters the float chamber 16a of the valve body 16 through the front passage 12a due to the internal pressure of the tank, and finally reaches the line of the return passage 18, and passes through the return passage 18 and the inlet pipe. It will return to 11a.
このような循環流れが生じると、入口管１１ａ内の液面
が所定のラインに達しないうちに、燃料のしぶきによっ
て給油ノズルｎの先端が液面感知の動作をして給油が止
まる。When such a circulating flow occurs, before the liquid level in the inlet pipe 11a reaches a predetermined line, the tip of the refueling nozzle n operates to sense the liquid level due to the splash of fuel, and the refueling stops.
そこで、速度を落として再給油をすれば、タンク１１お
よび入口管１１ａ内の液面が徐々に上昇すると共にバル
ブ本体１６のフロート室１６ａ内も燃料で満たされ、フ
ロート１７の先端がテーパシート面２０ａに圧接して第
２ベンチレーション通路ｌ２を遮断する一方、ノズル先
端が所定の液面を感知して給油を止める。Therefore, when refueling is performed at a reduced speed, the liquid level in the tank 11 and the inlet pipe 11a gradually rises, and the float chamber 16a of the valve body 16 is also filled with fuel, so that the tip of the float 17 is tapered. The second ventilation passage 12 is blocked by being pressed against 20a, while the tip of the nozzle senses a predetermined liquid level and stops refueling.
ところで、上記のように液面が所定レベルに達しないう
ちに給油が止まった際、タンク内の動圧によって液体燃
料がカーボンキヤニスタ側へ流れようとしても、バルブ
本体１６内の拡張室１６ｂがこれを緩衝し、副カーボン
キヤニスタ１４への液体燃料の流出を防止する。By the way, when refueling stops before the liquid level reaches the predetermined level as described above, even if the liquid fuel tries to flow to the carbon canister side due to the dynamic pressure in the tank, the expansion chamber 16b in the valve body 16 is This is buffered to prevent the liquid fuel from flowing out to the sub carbon canister 14.
（考案の効果） この考案は、給油時に燃料タンク内に生じる燃料蒸気を
第２ベンチレーション通路により副カーボンキヤニスタ
に吸着させる燃料蒸気の処理装置として、上述のように
構成されているので、これまでのように給油時にタンク
内圧の高まりによる入口管内の不都合な液面の上昇を招
く恐れなく、給油作業が円滑に行われ、給油性能を向上
させることができ、そして、入口管内において燃料のし
ぶきによって給油ノズルが止まったにしても、速度を落
としての再給油が可能で燃料タンクの容積を有効に活用
することができる。また、バルブ本体内に流入する燃料
蒸気は拡張室に入り、かつ縦仕切を乗り越えて蒸発室に
流れるようになされているので、燃料蒸気に含まれてい
る液状粒子を適切に分離することができ、更に、給油時
に液面が所定レベルに達しないうちに給油が止まり、液
体燃料がタンク内の動圧によってバルブ本体内に入った
にしても、拡張室によってその勢いを緩和し、副カーボ
ンキヤニスタ側に流れるのを防止することができる。(Effect of the Invention) Since the present invention is configured as described above as a fuel vapor processing apparatus for adsorbing the fuel vapor generated in the fuel tank at the time of refueling to the sub carbon canister through the second ventilation passage, As described above, there is no fear of causing an inconvenient rise of the liquid level in the inlet pipe due to the increase in tank pressure during refueling, the refueling work can be performed smoothly, the refueling performance can be improved, and the fuel spray in the inlet pipe Even if the refueling nozzle stops, refueling can be performed at a reduced speed, and the volume of the fuel tank can be effectively utilized. Further, since the fuel vapor flowing into the valve body enters the expansion chamber and also flows over the vertical partition to the evaporation chamber, the liquid particles contained in the fuel vapor can be properly separated. Moreover, even if refueling stops before the liquid level reaches a predetermined level during refueling and liquid fuel enters the valve body due to the dynamic pressure in the tank, the expansion chamber dampens its momentum and the sub carbon carrier It is possible to prevent it from flowing to the side of the nister.
第１図はこの考案の実施例の側面図。 第２図はバルブ本体部分の断面図。 第３図はそのＸ−Ｘ線に沿った断面図。 第４図は従来装置の側面図。 図中 １１……燃料タンク、１１ａ……入口管 １２……主カーボンキヤニスタ、 １４……副カーボンキヤニスタ、 １５……電磁バルブ、１６……バルブ本体 １６ａ……フロート室、１６ｂ……拡張室 １７……フロート、１８……戻し通路 １９……縦仕切、２０……横仕切 ２０ａ……テーパシート面 FIG. 1 is a side view of the embodiment of the present invention. FIG. 2 is a sectional view of the valve body portion. FIG. 3 is a sectional view taken along the line XX. FIG. 4 is a side view of the conventional device. In the figure, 11 ... Fuel tank, 11a ... Inlet pipe 12 ... Main carbon canister, 14 ... Sub carbon canister, 15 ... Electromagnetic valve, 16 ... Valve body 16a ... Float chamber, 16b ... Expansion Chamber 17 ... Float, 18 ... Return passage 19 ... Vertical partition, 20 ... Horizontal partition 20a ... Tapered seat surface
Claims (1)
ズルｎの挿入，抜き取りで開閉する弁を設けた第２ベン
チレーション通路ｌ２により副カーボンキヤニスタ１４
に結び、給油時の燃料蒸気を副カーボンキヤニスタ１４
に吸着させる燃料蒸気の処理装置において、上記第２ベ
ンチレーション通路ｌ２の途中で、燃料タンク１１の外
側にバルブ本体１６を配設し、このバルブ本体１６の内
部を、天井壁との間に若干の隙間をおく縦仕切１９によ
り蒸気室１６ｃをなす狭い部分と広い部分に区分すると
共に、広い部分は中央部にテーパシート面２０ａを有す
る環状の横仕切２０によって上の拡張室１６ｂと下のフ
ロート室１６ａに二分し、フロート室１６ａ内にはフロ
ート１７を収容し、フロート室１６ａを第２ベンチレー
ション通路ｌ２の一部をなす前通路ｌ２ａで燃料タンク
１１に連結する一方、戻し通路１８で燃料タンク１１の
入口管１１ａに連結し、また、上記蒸気室１６ｃを第２
ベンチレーション通路ｌ２の後通路ｌ２ｂで副カーボン
キヤニスタ１４に連結させてなる燃料タンクにおける燃
料蒸気の処理装置。1. A sub-carbon canister 14 by means of a second ventilation passage l 2 provided with a valve which opens and closes by inserting and extracting a refueling nozzle n in the upper space of the fuel tank 11.
The fuel vapor during refueling is connected to the sub carbon canister 14
In the apparatus for treating fuel vapor to be adsorbed on the valve body 16, a valve body 16 is disposed outside the fuel tank 11 in the middle of the second ventilation passage l 2 , and the inside of the valve body 16 is connected to the ceiling wall. A vertical partition 19 with a slight gap divides the steam chamber 16c into a narrow portion and a wide portion. The float chamber 16a is divided into two parts, a float 17 is accommodated in the float chamber 16a, and the float chamber 16a is connected to the fuel tank 11 by a front passage l 2a forming a part of the second ventilation passage l 2 while a return passage is provided. 18 is connected to the inlet pipe 11a of the fuel tank 11 and the steam chamber 16c is connected to the second pipe.
A device for processing fuel vapor in a fuel tank, which is connected to a sub carbon canister 14 in a rear passage l 2b of a ventilation passage l 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988025204U JPH0616816Y2 (en) | 1988-02-29 | 1988-02-29 | Fuel tank fuel vapor treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988025204U JPH0616816Y2 (en) | 1988-02-29 | 1988-02-29 | Fuel tank fuel vapor treatment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01131619U JPH01131619U (en) | 1989-09-06 |
| JPH0616816Y2 true JPH0616816Y2 (en) | 1994-05-02 |
Family
ID=31245733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988025204U Expired - Lifetime JPH0616816Y2 (en) | 1988-02-29 | 1988-02-29 | Fuel tank fuel vapor treatment device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0616816Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101509746B1 (en) * | 2013-12-05 | 2015-04-07 | 현대자동차 주식회사 | Urea filling device for selective catalyst reduction device |
| US9604158B2 (en) | 2014-04-11 | 2017-03-28 | Hyundai Motor Company | Separator for separating fluid and SCR urea injection system using the same |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007088023A1 (en) * | 2006-01-31 | 2007-08-09 | Kautex Textron Gmbh & Co. Kg | Fuel tank for a motor vehicle |
| JP6668882B2 (en) * | 2016-03-30 | 2020-03-18 | 三菱自動車工業株式会社 | Additive container |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61141129U (en) * | 1985-02-25 | 1986-09-01 | ||
| JPH039467Y2 (en) * | 1985-02-25 | 1991-03-08 | ||
| JPS6216519U (en) * | 1985-07-17 | 1987-01-31 |
-
1988
- 1988-02-29 JP JP1988025204U patent/JPH0616816Y2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101509746B1 (en) * | 2013-12-05 | 2015-04-07 | 현대자동차 주식회사 | Urea filling device for selective catalyst reduction device |
| US9874127B2 (en) | 2013-12-05 | 2018-01-23 | Hyundai Motor Company | Urea injection device for selective catalyst reduction device |
| US9604158B2 (en) | 2014-04-11 | 2017-03-28 | Hyundai Motor Company | Separator for separating fluid and SCR urea injection system using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01131619U (en) | 1989-09-06 |
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