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JP2582688Y2 - Vehicle canister device - Google Patents

Vehicle canister device

Info

Publication number
JP2582688Y2
JP2582688Y2 JP4646693U JP4646693U JP2582688Y2 JP 2582688 Y2 JP2582688 Y2 JP 2582688Y2 JP 4646693 U JP4646693 U JP 4646693U JP 4646693 U JP4646693 U JP 4646693U JP 2582688 Y2 JP2582688 Y2 JP 2582688Y2
Authority
JP
Japan
Prior art keywords
pipe
open
cylindrical portion
atmosphere
canister
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 - Fee Related
Application number
JP4646693U
Other languages
Japanese (ja)
Other versions
JPH0717951U (en
Inventor
健彰 中島
正昭 堀内
雅俊 宇田川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP4646693U priority Critical patent/JP2582688Y2/en
Publication of JPH0717951U publication Critical patent/JPH0717951U/en
Application granted granted Critical
Publication of JP2582688Y2 publication Critical patent/JP2582688Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Separation Of Gases By Adsorption (AREA)

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、車体に固定配置される
キャニスタの下部に、下端を開放した大気開放管路の上
端が接続され、大気開放管路の中間部には、大気開放管
路の下端部が閉塞したときの空気吸込み用の補助吸込み
管路の一端部が接続される車両用キャニスタ装置に関す
る。
BACKGROUND OF THE INVENTION The present invention relates to a canister fixed to a vehicle body, the lower end of which is connected to the upper end of an open-to-atmosphere pipe. The present invention relates to a canister device for a vehicle to which one end of an auxiliary suction pipe for air suction is connected when a lower end of the canister is closed.

【0002】[0002]

【従来の技術】このような車両用キャニスタ装置におい
て、大気開放管路は、キャニスタ内に収納された活性炭
等の吸着剤からの蒸発燃料をエンジン側にパージする際
に、下端開口部から空気を吸い込むとともに、前記吸着
剤の破過に伴う燃料ガスの外部への放出をも果たすもの
であるが、大気開放管路の下端開口部が水没等により閉
塞したときに、キャニスタ内への空気の吸込みを可能と
するために大気開放管路の中間部に補助吸込み管路が接
続されるものであり、従来のものでは、大気開放管路の
中間部に補助吸込み管路の一端部がほぼ直角に接続され
ている。
2. Description of the Related Art In such a canister device for a vehicle, an air opening pipe is used to purge air from an opening at a lower end when purifying fuel evaporated from an adsorbent such as activated carbon stored in the canister to an engine side. In addition to sucking in, the fuel gas is released to the outside due to the breakthrough of the adsorbent, but when the lower end opening of the open-to-atmosphere pipe is closed by submersion or the like, air is sucked into the canister. The auxiliary suction pipe is connected to the middle part of the open-air pipe in order to enable the above. In the conventional case, one end of the auxiliary suction pipe is substantially perpendicular to the middle part of the open-air pipe. It is connected.

【0003】[0003]

【考案が解決しようとする課題】ところで、補助吸込み
管路の他端部は、車体におけるサイドフレーム内に開放
されるのが一般的である。しかるに、キャニスタ内の吸
着剤の破過に伴って大気開放管路に燃料ガスが放出され
たときに、その燃料ガスが補助吸込み管路を通ってサイ
ドフレーム内から車室内に侵入するおそれがある。この
ため、従来では、大気開放管路側への空気の流通のみを
許容する一方向弁が補助吸込み管路に設けられており、
部品点数の増加を招くとともに、一方向弁のリークやス
ティック等の耐久信頼性の低下にも対処する必要があ
る。
The other end of the auxiliary suction pipe is generally opened into a side frame of the vehicle body. However, when fuel gas is released to the open-to-atmosphere pipe due to breakthrough of the adsorbent in the canister, the fuel gas may enter the vehicle interior from the side frame through the auxiliary suction pipe. . For this reason, conventionally, a one-way valve that allows only the flow of air to the atmosphere-opening pipe side is provided in the auxiliary suction pipe,
In addition to increasing the number of parts, it is necessary to cope with leakage of the one-way valve and deterioration of durability reliability such as sticks.

【0004】本考案は、かかる事情に鑑みてなされたも
のであり、一方向弁を用いることなく補助吸込み管路側
への燃料ガスの流れを極力防止し、部品点数を低減した
車両用キャニスタ装置を提供することを目的とする。
The present invention has been made in view of the above circumstances, and a vehicle canister device in which the number of parts is reduced by minimizing the flow of fuel gas to the auxiliary suction pipe side without using a one-way valve. The purpose is to provide.

【0005】[0005]

【課題を解決するための手段】上記目的を達成するため
に、本考案によれば、大気開放管路の中間部に絞りを形
成して、この絞りの内面に補助吸込み管路の一端部を開
口させ、その開口部よりも上流側で大気開放管路と補助
吸込み管路の前記一端部とのなす角度を90度以下に設
定したことを特徴とする。この特徴によれば、キャニス
タ内から大気開放管路に燃料ガスが放出された場合で
も、上記角度設定により大気開放管路から補助吸込み管
路側への反転流通抵抗を大きくでき、しかも上記絞りの
特設により補助吸込み管路から大気開放管路側へ空気吸
込み効果が十分に発揮されるから、それらの相乗効果に
より、大気開放管路から補助吸込み管路への燃料ガスの
流通を、一方向弁を使用しないで効果的に防止できる。
According to the present invention , a throttle is formed at an intermediate portion of an open- to- atmosphere pipe.
And open one end of the auxiliary suction line on the inner surface of the throttle.
And an air release conduit upstream of the opening
The angle between the suction pipe and the one end is 90 degrees or less.
It is characterized by having been specified. According to this feature, the canis
When fuel gas is released from inside the
Also, by setting the angle above, the auxiliary suction pipe
The reverse flow resistance to the road side can be increased, and
Air suction from auxiliary suction pipe to atmosphere open pipe side by special installation
Effect is fully exhibited,
Of fuel gas from the open-to-air pipe to the auxiliary suction pipe.
Distribution can be effectively prevented without using a one-way valve.

【0006】[0006]

【実施例】以下、図面により本考案の実施例について説
明する。
BRIEF DESCRIPTION OF THE DRAWINGS FIG.

【0007】図1ないし図3は本考案の実施例を示す
ものであり、図1は車体への装着状態を示すキャニス装
置の側面図、図2は接続部材の底面図、図3は図1の3
−3線断面図である。
FIGS. 1 to 3 show an embodiment of the present invention. FIG. 1 is a side view of a canister device showing a mounted state on a vehicle body, FIG. 2 is a bottom view of a connecting member, and FIG. 1 of 3
FIG. 3 is a sectional view taken along line -3.

【0008】先ず図1において、車室5とはダッシュボ
ード6で区画されたエンジンルーム7内で、車体8には
キャニスタ9が固定的に支持されており、このキャニス
タ9内には、活性炭等の吸着剤が収納されている。
First, in FIG. 1, a canister 9 is fixedly supported on a vehicle body 8 in an engine room 7 defined by a dashboard 6 and a dashboard 6, and activated carbon or the like is provided in the canister 9. Is stored.

【0009】キャニスタ9の下部には、下端を開放した
大気開放管路10の上端部が接続され、大気開放管路1
0の中間部には、大気開放管路10の下端部が水没等に
より閉塞したときに空気を吸込むため補助吸込み管路
の一端部が接続され、補助吸込み管路の他端部は、
従来用いていた一方向弁を設けることなしにエンジンル
ーム7内の上部で開放される。
The lower end of the canister 9 is connected to the upper end of an open-to-atmosphere pipe 10 whose lower end is opened.
The intermediate portion of 0, the auxiliary suction pipe to suck air when the lower end of the atmosphere open pipe 10 is blocked by submersion etc.
S is connected to one end, and the other end of the auxiliary suction pipe S is
It is opened at the upper part in the engine room 7 without providing the conventionally used one-way valve.

【0010】大気開放管路10は、キャニスタ9の下部
に接続される上部ホース12がジョイント13を介して
下部ホース14に接続されて成るものであり、補助吸込
み管路Sの主体をなすゴム製の補助ホース11の一端部
はジョイント13に接続される。
The open-to-atmosphere pipe 10 is formed by connecting an upper hose 12 connected to a lower part of the canister 9 to a lower hose 14 via a joint 13 and is made of rubber which forms the main part of the auxiliary suction pipe S. One end of the auxiliary hose 11 is connected to the joint 13.

【0011】図2および図3において、ジョイント13
は、合成樹脂から成る第1接続部材15と、合成樹脂か
ら成る第2接続部材16とが相互に嵌合されて成るもの
である。第1接続部材15は、一端に上部ホース12を
接続させる円筒部17の中間部に、該円筒部17の一端
側との間で90度以下の角度αをなす分岐円筒部18が
連設されて成るものであり、この分岐円筒部18に前記
補助ホース11の一端部が接続される。しかも前記円筒
部17の中間部には絞り28が形成されており、その絞
り28の内面に分岐円筒部18が開口している。
In FIG. 2 and FIG.
The first connection member 15 made of a synthetic resin and the second connection member 16 made of a synthetic resin are fitted to each other. In the first connection member 15, a branch cylindrical portion 18 having an angle α of 90 ° or less between one end of the cylindrical portion 17 and the intermediate portion of the cylindrical portion 17 connecting the upper hose 12 to one end is continuously provided. One end of the auxiliary hose 11 is connected to the branch cylindrical portion 18. Moreover, the cylinder
A stop 28 is formed at an intermediate portion of the portion 17 and the stop 28 is formed.
The branch cylindrical portion 18 is open on the inner surface of the bridge 28.

【0012】た第2接続部材16は、第1接続部材1
5における円筒部17の他端部を嵌合させる大径円筒部
19と、円筒部17の内径と同一内径を有する小径円筒
部20とが段部21を介して同軸に連設されて成るもの
であり、小径円筒部20には下部ホース14の上端部が
接続される。
[0012] or second connecting member 16, the first connecting member 1
5, a large-diameter cylindrical portion 19 into which the other end of the cylindrical portion 17 is fitted, and a small-diameter cylindrical portion 20 having the same inner diameter as the cylindrical portion 17 are coaxially connected via a step portion 21. The upper end of the lower hose 14 is connected to the small-diameter cylindrical portion 20.

【0013】第2接続部材16における大径円筒部19
には、その半径方向に間隔をあけた複数個所に係合孔2
2…が設けられており、第1接続部材15における円筒
部17の他端寄り外面には、該円筒部17を段部21に
当接させるまで大径円筒部19に嵌合したときに、前記
係合孔22…に弾発的に係合する複数の係合爪23…が
突設される。したがって円筒部17を大径円筒部19に
嵌合することにより、第1および第2接続部材15,1
6の相互嵌合状態が弾発的に保持されることになる。
The large-diameter cylindrical portion 19 of the second connecting member 16
At two or more places spaced apart in the radial direction.
Are provided on the outer surface of the first connecting member 15 near the other end of the cylindrical portion 17 when the cylindrical portion 17 is fitted to the large-diameter cylindrical portion 19 until the cylindrical portion 17 contacts the step portion 21. A plurality of engaging claws 23 projecting resiliently from the engaging holes 22 project. Therefore, by fitting the cylindrical portion 17 to the large-diameter cylindrical portion 19, the first and second connection members 15, 1 are connected.
6 are resiliently held.

【0014】而して上,下部ホース12,14は、第1
接続部材13の円筒部17及び第2接続部材16と協働
して本考案の大気開放管路10を構成しており、また補
助ホース11は、第1接続部材13の分岐円筒部18と
協働して本考案の補助吸込み管路Sを構成している。
The upper and lower hoses 12 and 14 are connected to the first
Cooperates with the cylindrical portion 17 of the connection member 13 and the second connection member 16
Thus, the open-air conduit 10 of the present invention is constituted.
The auxiliary hose 11 is connected to the branch cylindrical portion 18 of the first connection member 13.
Together, they constitute the auxiliary suction line S of the present invention.

【0015】また第2接続部材16における大径円筒部
19には、ジョイント13を車体8に固定的に支持する
ためのクリップ24が設けられる。さらに図1で示すよ
うに、大気開放管路10における下部ホース14の下端
開口部には、車両走行路面から跳ね返った小石等が下部
ホース14内に侵入することを防止するために、該下部
ホース14の開口端に間隔をあけて対向する邪魔板25
が装着される。
A clip 24 for fixedly supporting the joint 13 to the vehicle body 8 is provided on the large-diameter cylindrical portion 19 of the second connecting member 16. Further, as shown in FIG. 1, the lower hose 14 is provided at the lower end opening of the lower hose 14 in the open-to-atmosphere pipe 10 in order to prevent pebbles and the like bounced off the road surface of the vehicle from entering the lower hose 14. Baffle plate 25 facing the open end of 14 at an interval
Is attached.

【0016】次にこの第1実施例の作用について説明す
ると、大気開放管路10は、キャニスタ9の下部に接続
される上部ホース12がジョイント13(特に第1接続
部材13の円筒部17及び第2接続部材16)を介して
下部ホース14に接続されて成るものであり、大気開放
管路10の中間部(ジョイント13の第1接続部材15
の円筒部17)には絞り28が形成され、その絞り28
の内面に、補助吸込み管路Sの一端部(分岐円筒部1
8)が開口している。しかもその開口部18aよりも上
流側で大気開放管路10(円筒部17)と補助吸込み管
路Sの前記一端部(分岐円筒部18)とのなす角度αが
前述のように90度以下に設定される。
Next, the operation of the first embodiment will be described. The open-to-atmosphere pipe 10 has an upper hose 12 connected to a lower portion of the canister 9 connected to a joint 13 (particularly the first connection).
It is connected to the lower hose 14 via the cylindrical portion 17 of the member 13 and the second connecting member 16), and is connected to the intermediate portion of the open-to-atmosphere pipe 10 (the first connecting member 15 of the joint 13).
A diaphragm 28 is formed in the cylindrical portion 17) of the
One end of the auxiliary suction pipe S (the branch cylindrical portion 1)
8) is open. Moreover, above the opening 18a
At the flow side, open air pipe 10 (cylindrical part 17) and auxiliary suction pipe
The angle α between the one end of the path S and the one end portion (branched cylindrical portion 18) is
The angle is set to 90 degrees or less as described above.

【0017】このように、大気開放管路10と補助吸込
み管路とを接続しておくと、吸着剤の破過に伴ってキ
ャニスタ9から放出される燃料ガスが、図3の矢印26
で示すよう大気開放管路10における円筒部17内を下
方に流通する際に絞り28により流速を増し、分岐円筒
部18(補助吸込み管路S)から円筒部17(大気開放
管路10)側へ空気の吸込み効果が生じる。しかも分岐
円筒部18が円筒部17にその上流側と鋭角αをなすよ
うに連設されていることにより、円筒部17から分岐円
筒部18への燃料ガスの反転流通は流通抵抗が大きく、
したがって燃料ガスの分岐円筒部18補助吸込み管路
への流通が抑制され、むしろ円筒部17(絞り2
8)内の燃料ガスの流通に伴う負圧の発生により補助吸
込み管路から円筒部17内すなわち大気開放管路10
内へと、矢印27で示すように空気が効果的に吸い込ま
れることになる。この結果、補助吸込み管路に、従来
設けていた一方向弁を設けることなしに、燃料ガスが補
助吸込み管路側に流通することを効果的に防止するこ
とができる。
As described above, when the open-to-atmosphere pipe 10 and the auxiliary suction pipe S are connected to each other, the fuel gas released from the canister 9 due to the breakthrough of the adsorbent flows in the direction indicated by an arrow 26 in FIG.
As shown in the figure, the flow velocity is increased by the throttle 28 when flowing through the inside of the cylindrical portion 17 in the open-to-atmosphere conduit 10, and
From section 18 (auxiliary suction line S) to cylindrical section 17 (open to atmosphere)
An air suction effect is produced on the side of the pipe 10). Moreover, since the branch cylindrical portion 18 is connected to the cylindrical portion 17 so as to form an acute angle α with the upstream side, the reverse flow of the fuel gas from the cylindrical portion 17 to the branch cylindrical portion 18 has a large flow resistance,
Therefore, the flow of the fuel gas to the branch cylindrical portion 18 (the auxiliary suction pipe S ) is suppressed, and the cylindrical portion 17 (the throttle 2)
8) Due to the generation of a negative pressure due to the flow of the fuel gas inside, the auxiliary suction pipe S enters the cylindrical portion 17, that is, the atmosphere open pipe 10.
The air will be effectively sucked in as shown by arrow 27. As a result, the auxiliary inlet line S, without providing a one-way valve has been provided conventionally, the fuel gas flows to the auxiliary inlet line S side can be effectively prevented.

【0018】以上、本考案の実施例を詳述したが、本考
案は上記実施例に限定されるものではなく、実用新案登
録請求の範囲に記載された本考案を逸脱することなく種
々の設計変更を行なうことが可能である。
Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various designs can be made without departing from the present invention described in the claims for utility model registration. Changes can be made.

【0019】[0019]

【考案の効果】以上のように本考案によれば、大気開放
管路の中間部に絞りを形成して、この絞りの内面に補助
吸込み管路の一端部を開口させ、その開口部よりも上流
側で大気開放管路と補助吸込み管路の前記一端部とのな
す角度を90度以下に設定したので、キャニスタ内から
大気開放管路に燃料ガスが放出された場合でも、上記角
度設定により大気開放管路から補助吸込み管路側への反
転流通抵抗を大きくでき、しかも上記絞りの特設により
補助吸込み管路から大気開放管路側へ空気吸込み効果が
十分に発揮され、それらの相乗効果により、大気開放管
路から補助吸込み管路への燃料ガスの流通を効果的に防
止できることから、その流通防止のために従来必要とし
ていた一方向弁が省略可能となり、部品点数の低減、延
いてはコス ト節減に寄与することができる。
[Effect of the Invention] As described above, according to the present invention, the atmosphere is opened to the atmosphere.
A throttle is formed in the middle of the pipe to support the inner surface of the throttle.
Open one end of the suction line and upstream from the opening
Between the open-to-atmosphere line and the one end of the auxiliary suction line
Angle is set to 90 degrees or less.
Even if fuel gas is released into the open-to-air conduit,
Degree from the open air line to the auxiliary suction line side
The flow resistance can be increased, and the special restriction
Air suction effect from auxiliary suction line to open air line
Fully exploited and their synergistic effect,
Effectively prevents fuel gas from flowing from the channel to the auxiliary suction line.
The one-way valve previously required to prevent its distribution can be omitted , reducing the number of parts and extending
Stomach can contribute to cost savings.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本考案の一実施例のキャニスタ装置の側面図FIG. 1 is a side view of a canister device according to an embodiment of the present invention.

【図2】接続部材の底面図FIG. 2 is a bottom view of a connection member.

【図3】図1の3−3線断面 FIG. 3 is a sectional view taken along line 3-3 in FIG. 1;

【符号の説明】[Explanation of symbols]

9 キャニスタ 1 大気開放管路18 一端部としての分岐円筒部 18a 開口部 28 絞り 補助吸込み管路 α 角度9 canister 1 0 atmosphere open pipe 18 branches as one end cylindrical portion 18a opening 28 stop S auxiliary inlet line α angle

───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6,DB名) F02M 25/08──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 6 , DB name) F02M 25/08

Claims (1)

(57)【実用新案登録請求の範囲】(57) [Scope of request for utility model registration] 【請求項1】 車体(8)に固定配置されるキャニスタ
(9)の下部に、下端を開放した大気開放管路(10)
の上端が接続され、大気開放管路(10)の中間部に
は、大気開放管路(10)の下端部が閉塞したときの空
気吸込み用の補助吸込み管路()の一端部(18)
接続される、車両用キャニスタ装置において、大気開放管路(10)の前記中間部に絞り(28)を形
成して、この絞り(28)の内面に補助吸込み管路
(S)の前記一端部(18)を開口させ、その開口部
(18a)よりも上流側で大気開放管路(10)と補助
吸込み管路(S)の前記一端部(18)とのなす角度
(α)を90度以下に設定した ことを特徴とする、車両
用キャニスタ装置。
An open-to-atmosphere pipe (10) having a lower end opened at a lower portion of a canister (9) fixedly arranged on a vehicle body (8).
The upper end of the connection, the intermediate portion of the air release pipe (10), one end portion of the auxiliary inlet line for the lower end has a suction air when the closed atmosphere release line (10) (S) (18 ) Is connected , the throttle (28) is formed at the intermediate portion of the open-to-atmosphere pipe (10).
The auxiliary suction pipe is formed on the inner surface of the throttle (28).
The one end (18) of (S) is opened, and the opening
Auxiliary with open-to-atmosphere line (10) upstream from (18a)
Angle between the suction pipe (S) and the one end (18)
A canister device for a vehicle, wherein (α) is set to 90 degrees or less .
JP4646693U 1993-08-26 1993-08-26 Vehicle canister device Expired - Fee Related JP2582688Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4646693U JP2582688Y2 (en) 1993-08-26 1993-08-26 Vehicle canister device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4646693U JP2582688Y2 (en) 1993-08-26 1993-08-26 Vehicle canister device

Publications (2)

Publication Number Publication Date
JPH0717951U JPH0717951U (en) 1995-03-31
JP2582688Y2 true JP2582688Y2 (en) 1998-10-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP4646693U Expired - Fee Related JP2582688Y2 (en) 1993-08-26 1993-08-26 Vehicle canister device

Country Status (1)

Country Link
JP (1) JP2582688Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7438058B2 (en) 2006-03-02 2008-10-21 Honda Motor Co., Ltd. Drain pipe in canister system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7438058B2 (en) 2006-03-02 2008-10-21 Honda Motor Co., Ltd. Drain pipe in canister system

Also Published As

Publication number Publication date
JPH0717951U (en) 1995-03-31

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