JP2000320406A - Canister with liquified fuel treating function - Google Patents

Canister with liquified fuel treating function

Info

Publication number
JP2000320406A
JP2000320406A JP11131462A JP13146299A JP2000320406A JP 2000320406 A JP2000320406 A JP 2000320406A JP 11131462 A JP11131462 A JP 11131462A JP 13146299 A JP13146299 A JP 13146299A JP 2000320406 A JP2000320406 A JP 2000320406A
Authority
JP
Japan
Prior art keywords
passage
canister
fuel
case
purge passage
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.)
Pending
Application number
JP11131462A
Other languages
Japanese (ja)
Inventor
Koichi Ikuma
公一 生熊
Takenori Suzuki
兵昇 鈴木
Shoji Sakagami
尚司 坂上
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.)
Roki Co Ltd
Original Assignee
Toyo Roki Mfg 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 Toyo Roki Mfg Co Ltd filed Critical Toyo Roki Mfg Co Ltd
Priority to JP11131462A priority Critical patent/JP2000320406A/en
Publication of JP2000320406A publication Critical patent/JP2000320406A/en
Pending legal-status Critical Current

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  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a canister which can maintain fuel amount supplied from the canister in a proper range, even if the hole diameter of an orifice is large. SOLUTION: In this canister with a liquefied fuel treating function provided with a liquid storing case for storing a liquified fuel, a flow in a passage, in which a fuel vapor is streamed, provided on this liquid storing case, a purge passage, out which the fuel vapour is streamed, provided projectingly in the liquid storing case, a suction passage communicated to the projected portion of this purge passage, for sucking up the liquified fuel stored in the liquid storing case in the purge passage and an orifice provided on the communication portion with this suck up passage and the purge passage, a flow S2 of the communication portion of the purge passage is formed smaller than upperstream side passage section S3 of this communication portion and larger than a downstream side passage section S1.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、車両の燃料タンク
等から発生する蒸発燃料を吸着処理して、大気中に放出
することを防止するキャニスタに関し、特に、液化した
燃料を予備的に処理する液化燃料処理機能付キャニスタ
に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a canister for adsorbing evaporated fuel generated from a fuel tank or the like of a vehicle so as to prevent the fuel from being released into the atmosphere. The present invention relates to a canister with a liquefied fuel processing function.

【0002】[0002]

【従来の技術】従来、この種の液化燃料処理機能付キャ
ニスタとして、キャニスタ内部からの脱離燃料を流出さ
せるパージ通路を液溜めケース内に突出させて設け、こ
のパージ通路の前記突出した部分にオリフィスを介して
吸い上げ通路を連結し、この吸い上げ通路を用いて液溜
めケース内に溜められた液化燃料を予備的に処理するも
のが知られている。このようなキャニスタは、パージ通
路の吸い上げ通路と連結された部分の流路断面がパージ
通路の上流および下流の流路断面よりも小さく絞られて
いる。このため、前記連結部分を通る脱離燃料の流速が
他の部分よりも速くなり、そこに負圧が生じ、液溜めケ
ース中に溜まっている液化燃料が通路に吸い上げられ、
オリフィスにより霧化されて脱離燃料と共にパージ通路
から流出するようにしている(特開平8−158958
号公報参照)。
2. Description of the Related Art Conventionally, as this type of canister with a liquefied fuel processing function, a purge passage through which desorbed fuel from the inside of the canister flows out is provided so as to protrude into a liquid reservoir case. It is known that a suction passage is connected through an orifice, and the liquefied fuel stored in a liquid storage case is preliminarily treated using the suction passage. In such a canister, the cross section of the flow passage at the portion of the purge passage connected to the suction passage is narrowed to be smaller than the cross sections of the flow passage upstream and downstream of the purge passage. For this reason, the flow rate of the desorbed fuel passing through the connecting portion becomes faster than the other portions, a negative pressure is generated there, and the liquefied fuel stored in the liquid storage case is sucked up into the passage,
The fuel is atomized by the orifice and flows out of the purge passage together with the desorbed fuel (Japanese Patent Laid-Open No. 8-158958).
Reference).

【0003】[0003]

【発明が解決しようとする課題】従来のキャニスタで
は、パージ通路の吸い上げ通路と連結された部分の流路
断面がパージ通路の上流および下流の流路断面よりも小
さく絞られているため、吸い上げ通路から液化燃料を吸
い上げ過ぎて、キャニスタが内燃機関に供給する燃料が
多くなり過ぎるという問題があった。液化燃料の吸い上
げ過ぎによる燃料の供給過多を押さえるために、オリフ
ィスの径を小さくすることが考えられる。しかし、孔径
が小さくなるほど、その形成が難しくなり、孔径の誤差
が増して燃料の吸い上げ量が製品間でばらつく虞があ
る。
In the conventional canister, since the cross-section of the flow passage at the portion of the purge passage connected to the suction passage is narrowed smaller than the flow passage cross sections upstream and downstream of the purge passage, the suction passage is formed. Liquefied fuel is sucked up too much, and the canister supplies too much fuel to the internal combustion engine. It is conceivable to reduce the diameter of the orifice in order to suppress excessive supply of fuel due to excessive suction of liquefied fuel. However, the smaller the hole diameter is, the more difficult it is to form the hole, the error in the hole diameter increases, and the amount of fuel sucked up may vary between products.

【0004】そこで、本発明はオリフィスの孔径が大き
くてもキャニスタの供給する燃料量を適正範囲に維持で
きるキャニスタを提供することを目的とする。
Accordingly, an object of the present invention is to provide a canister that can maintain the amount of fuel supplied by the canister within an appropriate range even when the diameter of the orifice is large.

【0005】[0005]

【課題を解決するための手段】以下、本発明について説
明する。なお、本発明の理解を容易にするために添付図
面の参照符号を括弧書きにて付記するが、それにより本
発明が図示の形態に限定されるものではない。
Hereinafter, the present invention will be described. In addition, in order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are added in parentheses, but the present invention is not limited to the illustrated embodiment.

【0006】請求項1の発明の燃料蒸気処理機能付キャ
ニスタは、液化した燃料を溜める液溜めケース(9)
と、前記液溜めケースに設けられ、燃料蒸気が流入する
流入通路(10)と、前記液溜めケース内に突出して設
けられ、燃料蒸気が流出するパージ通路(14)と、前
記パージ通路の前記突出した部分に連通し、前記液溜め
ケース内に溜められた液化燃料を前記パージ通路内に吸
い上げる吸い上げ通路(12a)と、前記吸い上げ通路
と前記パージ通路との連通部分に設けられたオリフィス
(12d)と、を具備する液化燃料処理機能付キャニス
タであって、前記パージ通路の前記連通部分の流路断面
(S2)が、前記連通部分の上流側の流路断面(S3)よ
りも小さく、下流側の流路断面(S1)よりも大きいこ
とを特徴とする。
A canister with a fuel vapor processing function according to the first aspect of the present invention is a liquid storage case (9) for storing liquefied fuel.
An inflow passage (10) provided in the liquid reservoir case, through which fuel vapor flows, a purge passage (14) protruding into the liquid reservoir case, through which fuel vapor flows, and the purge passage (14). A suction passage (12a) communicating with the protruding portion and sucking the liquefied fuel stored in the liquid storage case into the purge passage; and an orifice (12d) provided at a communication portion between the suction passage and the purge passage. ), Wherein the flow passage cross section (S 2 ) of the communication portion of the purge passage is smaller than the flow passage cross section (S 3 ) on the upstream side of the communication portion. , And is larger than the flow path cross section (S 1 ) on the downstream side.

【0007】これによれば、オリフィスの孔径が大きく
てもオリフィス部分に生じる負圧の加減により、キャニ
スタの供給する燃料量を適正範囲に維持できる。
According to this, even if the diameter of the orifice is large, the amount of fuel supplied from the canister can be maintained in an appropriate range by adjusting the negative pressure generated in the orifice.

【0008】請求項2の発明の燃料蒸気処理機能付キャ
ニスタは、内部に吸着剤が充填されたケース本体(2)
の一端壁部(2a)に前記液溜めケース(9)が隣接し
て設けられ、前記一端壁部が液化燃料を溜める凹部(2
b)を有し、前記吸い上げ通路(12a)の開放端が前
記凹部の底に近接していることを特徴とする。この場合
には、液化燃料が凹部に溜まるため、少量の液化燃料で
も吸い上げ通路に吸い上げて無駄なく処理することがで
きる。
A canister having a fuel vapor treatment function according to a second aspect of the present invention is a case body (2) filled with an adsorbent.
The liquid reservoir case (9) is provided adjacent to one end wall portion (2a) of the fuel cell, and the one end wall portion has a concave portion (2) for storing liquefied fuel.
b), wherein an open end of the suction passage (12a) is close to a bottom of the concave portion. In this case, since the liquefied fuel accumulates in the concave portions, even a small amount of the liquefied fuel can be sucked into the suction passage and processed without waste.

【0009】請求項3の発明の燃料蒸気処理機能付キャ
ニスタは、内部に吸着剤が充填されたケース本体の
(2)一端壁部(2a)に前記液溜めケース(20)が
隣接して設けられ、前記一端壁部に対して立ち上がる前
記液溜めケースの側面に、前記吸い上げ通路(23a)
の開放端が近接していることを特徴とする。これによれ
ば、キャニスタを横置きにして使う場合に、溜まった液
化燃料を吸い上げ通路に吸い上げて無駄なく処理するこ
とができる。
According to a third aspect of the present invention, there is provided a canister having a fuel vapor treatment function, wherein the liquid reservoir case (20) is provided adjacent to (2) one end wall (2a) of a case body filled with an adsorbent. And a suction passage (23a) formed on a side surface of the liquid reservoir case rising up with respect to the one end wall.
Are characterized in that their open ends are close to each other. According to this, when the canister is used horizontally, the accumulated liquefied fuel can be sucked up into the suction passage and processed without waste.

【0010】[0010]

【発明の実施の形態】(実施の形態1) 図1から図6
を用いて第一の実施の形態を説明する。このキャニスタ
は、樹脂製のケース1を有している。このケース1は、
一端が開口する筒型のケース本体2と、そのケース本体
2の開口部を塞ぐケース蓋3とを有している。ケース1
の内部は、ケース本体2の天井壁2aから延びる仕切壁
4によって第一室5と第二室6とに仕切られている。天
井壁2aには第一室5に通じる導通管7(図4参照)
と、第二室6に通じる大気開放管8(図4参照)とが設
けられている。天井壁2aの外面には、キャップ状の液
溜めケース9が導通管7の外周を取り囲むように設けら
れている。液溜めケース9は、流入管10(図6参照)
と、液溜めケース内に突出して設けられた流出管11と
を有している。また、液溜めケース9の内部に、噴霧部
材12を有している。噴霧部材12は、上端がすり鉢状
に絞られた内部流路を備えた吸い上げ管12aと、吸い
上げ管12aの上端側に対して直交させて設けられた頭
部12bとを有している。さらに、頭部12bは、両端
にフランジ12c、12cと、中央に吸い上げ管12a
に通じるオリフィス12dとを有している。吸い上げ管
12aの下端が天井壁2aに設けられた凹部2bに近接
した状態で、頭部12bが液溜めケース9の通路片9a
に溶着され、頭部12bの一方のフランジ12cが流出
管11に溶着されている。噴霧部材12の頭部12bと
通路片9aとにより通路13が形成される。さらに、通
路13と流出管11とによりパージ通路14が形成され
る。このとき、流出管11の流路断面S1、パージ通路
14のオリフィス12d部分の流路断面S2、および、
パージ通路14の液溜めケース9内開口部の流路断面S
3の関係は、S1<S2<S3 となっている。
(Embodiment 1) FIGS. 1 to 6
The first embodiment will be described with reference to FIG. This canister has a case 1 made of resin. In this case 1,
It has a cylindrical case body 2 having one end opened, and a case lid 3 for closing the opening of the case body 2. Case 1
Is partitioned into a first chamber 5 and a second chamber 6 by a partition wall 4 extending from a ceiling wall 2a of the case body 2. On the ceiling wall 2a, a conduit 7 leading to the first chamber 5 (see FIG. 4)
And an open-to-atmosphere pipe 8 (see FIG. 4) communicating with the second chamber 6. On the outer surface of the ceiling wall 2a, a cap-shaped liquid reservoir case 9 is provided so as to surround the outer periphery of the conduit tube 7. The liquid reservoir case 9 is provided with an inflow pipe 10 (see FIG. 6).
And an outflow pipe 11 protruding into the reservoir case. Further, a spray member 12 is provided inside the liquid reservoir case 9. The spraying member 12 has a suction pipe 12a having an internal flow path whose upper end is narrowed in a mortar shape, and a head 12b provided orthogonal to the upper end side of the suction pipe 12a. Further, the head 12b has flanges 12c, 12c at both ends and a suction pipe 12a at the center.
And an orifice 12d. When the lower end of the suction pipe 12a is close to the recess 2b provided in the ceiling wall 2a, the head 12b is attached to the passage piece 9a of the reservoir case 9.
, And one flange 12c of the head 12b is welded to the outflow pipe 11. A passage 13 is formed by the head 12b of the spray member 12 and the passage piece 9a. Further, a purge passage 14 is formed by the passage 13 and the outflow pipe 11. At this time, the flow path cross section S 1 of the outflow pipe 11, the flow path cross section S 2 of the orifice 12 d portion of the purge passage 14, and
Flow path cross section S of the opening in liquid reservoir case 9 of purge passage 14
The relationship of 3 is S 1 <S 2 <S 3 .

【0011】ケース本体2の天井壁2aの内面には、不
織布等で構成された通気性を有するフィルタ15が当て
られ、そのフィルタ15の下側に吸着剤16が充填され
る。吸着剤16の下側はフィルタ17で被われ、さらに
その下方から樹脂製又は金属製のプレート18が被せら
れる。プレート18がケース蓋3との間に設けられたコ
イルばね19によりプレート18が押し上げられ、それ
により吸着剤16がケース本体2内に適度な圧力で詰め
込まれる。
An air-permeable filter 15 made of nonwoven fabric or the like is applied to the inner surface of the ceiling wall 2a of the case body 2, and an adsorbent 16 is filled under the filter 15. The lower side of the adsorbent 16 is covered with a filter 17, and a resin or metal plate 18 is further covered from below. The plate 18 is pushed up by a coil spring 19 provided between the plate 18 and the case lid 3, whereby the adsorbent 16 is packed into the case body 2 with an appropriate pressure.

【0012】上述のキャニスタの使用に際し、流入管1
0は車両の燃料タンクに、流出管11はエンジンの吸気
系にそれぞれ接続される。車両の停止時や走行時に燃料
タンク内に発生した燃料蒸気の圧力が一定以上になれ
ば、蒸発燃料がホース部材を介し流入管10から液溜め
ケース9内に入る。流入管10内で再び液化した高沸点
成分の液化燃料が分離されて液溜めケース9に残留し、
ガス状燃料のみが導通管7を通り、フィルタ15を介し
て、先ず、第一室5に入る。ついで、仕切壁4の先端と
フィルタ15との間を通り抜けて第二室6に入り、吸着
剤16に吸着される。
When using the above-mentioned canister, the inflow pipe 1
0 is connected to the fuel tank of the vehicle, and the outflow pipe 11 is connected to the intake system of the engine. When the pressure of the fuel vapor generated in the fuel tank when the vehicle stops or travels becomes higher than a certain value, the evaporated fuel enters the liquid reservoir case 9 from the inflow pipe 10 via the hose member. The liquefied fuel of the high boiling point component liquefied again in the inflow pipe 10 is separated and remains in the liquid reservoir case 9,
Only gaseous fuel passes through the conduit 7, and first enters the first chamber 5 via the filter 15. Next, it passes through the space between the tip of the partition wall 4 and the filter 15, enters the second chamber 6, and is adsorbed by the adsorbent 16.

【0013】エンジンの作動状態により、吸気管内が負
圧になると、それが流出管11を介してキャニスタに作
用し、大気開放管8から外気が吸入される。吸入された
外気が、第二室6から第一室5に流入し、吸着剤16か
ら燃料が脱離する。脱離した燃料は、導通管7を通じて
液溜めケース9内に入り、パージ通路14を経て吸気系
に送り込まれる。
When the pressure in the intake pipe becomes negative due to the operating state of the engine, it acts on the canister via the outflow pipe 11, and external air is sucked in from the atmosphere open pipe 8. The sucked outside air flows into the first chamber 5 from the second chamber 6, and the fuel is desorbed from the adsorbent 16. The desorbed fuel enters the liquid reservoir case 9 through the conduit 7 and is sent to the intake system through the purge passage 14.

【0014】このとき、パージ通路14の流路断面S2
が流路断面S3よりも絞られているため、オリフィス1
2d部分を通る脱離燃料の流速が他の部分よりも速くな
り、負圧が生じる。この負圧により、液溜めケース9内
に溜まっている液化燃料が吸い上げ管12aにより吸い
上げられ、頭部12bに設けられたオリフィス12dに
より噴霧される。噴霧された燃料は、脱離燃料と共にパ
ージ通路14を通って吸気系に供給される。
At this time, the flow passage section S 2 of the purge passage 14 is
So that if squeezed than the flow path cross-section S 3, the orifice 1
The flow rate of the desorbed fuel through the 2d portion becomes faster than in the other portions, and a negative pressure is generated. By this negative pressure, the liquefied fuel stored in the liquid storage case 9 is sucked up by the suction pipe 12a and sprayed by the orifice 12d provided in the head 12b. The sprayed fuel is supplied to the intake system through the purge passage 14 together with the desorbed fuel.

【0015】ただし、流路断面S2は流路断面S1よりも
大きいため、このときに生じる負圧は、流路断面S2
流路断面S1よりも小さい場合に生じる負圧よりも小さ
い。したがって、噴霧される液化燃料の量が適度に抑え
られる。
However, since the flow path cross section S 2 is larger than the flow path cross section S 1 , the negative pressure generated at this time is lower than the negative pressure generated when the flow path cross section S 2 is smaller than the flow path cross section S 1. small. Therefore, the amount of the liquefied fuel to be sprayed is appropriately suppressed.

【0016】(実施の形態2) 図7から図12を用い
て第二の実施の形態を説明する。この実施形態のキャニ
スタは、液溜めケースが横置き用に変更された点を除い
て、第一の実施の形態のキャニスタと同じである。天井
壁2aに設けられた導通管7の外周を取り囲むようにキ
ャップ状の液溜めケース20が設けられている。液溜め
ケース20は、液溜部20aと、燃料蒸気をキャニスタ
内部に導く導通管7と平行な流入管21および流出管2
2とを有している。また、液溜めケース20の内部に、
噴霧部材23を有している。噴霧部材23は、上端がす
り鉢状に絞られた内部流路を備えた吸い上げ管23a
と、吸い上げ管23aの上端側に直交させて設けられた
管部23bとを有している。管部23bは、その一端に
フランジ23cを有し、中央に吸い上げ管23aに通じ
るオリフィス23dを有している。吸い上げ管23aの
下端が液溜部20aの底に近接した状態で、フランジ2
3cが流出管22に溶着される。流出管22と管部23
bとによりパージ通路24が形成される。この時、流出
管11の流路断面S1、パージ通路24のオリフィス1
2d部分の流路断面S2、および、パージ通路の液溜め
ケース20内側の開口端部分と凹部2bとにより形成さ
れる流路の断面S3の関係は、S1<S2<S3 となって
いる。
(Embodiment 2) A second embodiment will be described with reference to FIGS. The canister of this embodiment is the same as the canister of the first embodiment except that the liquid reservoir case is changed for horizontal placement. A cap-shaped liquid reservoir case 20 is provided so as to surround the outer periphery of the conduit 7 provided on the ceiling wall 2a. The liquid reservoir case 20 includes a liquid reservoir 20a and an inflow pipe 21 and an outflow pipe 2 which are parallel to the conducting pipe 7 for guiding the fuel vapor into the canister.
And 2. Also, inside the reservoir case 20,
It has a spray member 23. The spray member 23 has a suction pipe 23a having an internal flow path narrowed in a mortar shape at the upper end.
And a pipe portion 23b provided orthogonally to the upper end side of the suction pipe 23a. The pipe portion 23b has a flange 23c at one end and an orifice 23d at the center which communicates with the suction pipe 23a. With the lower end of the suction pipe 23a close to the bottom of the liquid reservoir 20a, the flange 2
3c is welded to the outflow pipe 22. Outflow pipe 22 and pipe section 23
The purge passage 24 is formed by b. At this time, the cross section S 1 of the outflow pipe 11 and the orifice 1
The relationship between the flow path cross section S 2 of the 2d portion and the cross section S 3 of the flow path formed by the opening end portion inside the liquid reservoir case 20 of the purge passage and the concave portion 2b is expressed as S 1 <S 2 <S 3 . Has become.

【0017】本発明の実施の形態は上述のものに限ら
ず、種々変更してもよい。例えば、パージ通路を流出管
と噴霧部材との別個の部品にて構成したが、一部品とし
て一体に形成してもよい。この場合には、部品数が減り
組立ての手間も省くことができる。
The embodiments of the present invention are not limited to those described above, and may be variously modified. For example, although the purge passage is formed by separate components of the outflow pipe and the spray member, it may be formed integrally as one component. In this case, the number of parts is reduced, and the labor for assembling can be saved.

【0018】[0018]

【発明の効果】以上に説明したように、本発明のキャニ
スタによれば、オリフィスの孔径が大きくてもキャニス
タから供給する燃料量を適正範囲に維持でき、供給する
燃料量が製品間でばらつくことがない。
As described above, according to the canister of the present invention, the amount of fuel supplied from the canister can be maintained in an appropriate range even if the orifice has a large hole diameter, and the amount of supplied fuel varies between products. There is no.

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

【図1】図5のI−I線に沿った断面図。FIG. 1 is a sectional view taken along the line II of FIG. 5;

【図2】図1の部IIの拡大図。FIG. 2 is an enlarged view of part II of FIG.

【図3】図5のIII−III線に沿った断面図。FIG. 3 is a sectional view taken along the line III-III in FIG. 5;

【図4】図5のIV−IV線に沿った断面図。FIG. 4 is a sectional view taken along the line IV-IV in FIG. 5;

【図5】第一実施形態のキャニスタの側面図。FIG. 5 is a side view of the canister of the first embodiment.

【図6】第一実施形態のキャニスタの平面図。FIG. 6 is a plan view of the canister of the first embodiment.

【図7】図12のVI−VI線に沿った断面図。FIG. 7 is a sectional view taken along the line VI-VI in FIG. 12;

【図8】図12のVIII部の拡大図。FIG. 8 is an enlarged view of a portion VIII in FIG.

【図9】図12のVII−VII線に沿った断面図。FIG. 9 is a sectional view taken along the line VII-VII in FIG. 12;

【図10】第二実施形態のキャニスタの側面図。FIG. 10 is a side view of the canister of the second embodiment.

【図11】第二実施形態のキャニスタの側面図。FIG. 11 is a side view of the canister of the second embodiment.

【図12】第二実施形態のキャニスタの平面図。FIG. 12 is a plan view of a canister according to a second embodiment.

【符号の説明】[Explanation of symbols]

1 ケース 2 ケース本体 2a 天井壁 2b 凹部 3 ケース蓋 4 仕切壁 5 第一室 6 第二室 7 導通管 8 大気開放管 9 液溜めケース 9a 通路片 10 流入通路(流入管) 11 流出管 12 噴霧部材 12a 吸い上げ通路(吸い上げ管) 12b 頭部 12c フランジ 12d オリフィス 13 通路 14 パージ通路 15 フィルタ 16 吸着剤 17 フィルタ 18 プレート 20 液溜めケース 20a 液溜部 21 流入通路(流入管) 22 流出管 23 噴霧部材 23a 吸い上げ通路(吸い上げ管) 23b 管部 23c フランジ 23d オリフィス 24 パージ通路 DESCRIPTION OF SYMBOLS 1 Case 2 Case main body 2a Ceiling wall 2b recessed part 3 Case lid 4 Partition wall 5 First room 6 Second room 7 Conducting tube 8 Atmospheric release tube 9 Liquid storage case 9a Passage piece 10 Inflow passage (inflow tube) 11 Outflow tube 12 Spray Member 12a Suction passage (suction tube) 12b Head 12c Flange 12d Orifice 13 passage 14 Purge passage 15 Filter 16 Adsorbent 17 Filter 18 Plate 20 Liquid storage case 20a Liquid storage 21 Inflow passage (inflow tube) 22 Outflow tube 23 Spray member 23a suction passage (suction pipe) 23b pipe portion 23c flange 23d orifice 24 purge passage

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 液化した燃料を溜める液溜めケースと、
前記液溜めケースに設けられ、燃料蒸気が流入する流入
通路と、前記液溜めケース内に突出して設けられ、燃料
蒸気が流出するパージ通路と、前記パージ通路の前記突
出した部分に連通し、前記液溜めケース内に溜められた
液化燃料を前記パージ通路内に吸い上げる吸い上げ通路
と、前記吸い上げ通路と前記パージ通路との連通部分に
設けられたオリフィスと、を具備する液化燃料処理機能
付キャニスタであって、 前記パージ通路の前記連通部分の流路断面が、前記連通
部分の上流側の流路断面よりも小さく、下流側の流路断
面よりも大きいことを特徴とするキャニスタ。
1. A reservoir case for storing liquefied fuel,
An inflow passage provided in the liquid reservoir case, through which fuel vapor flows, a purge passage provided to protrude into the liquid reservoir case, through which fuel vapor flows, and communicating with the protruding portion of the purge passage; A canister with a liquefied fuel processing function, comprising: a suction passage for sucking liquefied fuel stored in a liquid storage case into the purge passage; and an orifice provided in a communication portion between the suction passage and the purge passage. The canister is characterized in that a cross section of the communication portion of the purge passage is smaller than a cross section of the flow passage on the upstream side of the communication portion and larger than a cross section of the flow passage on the downstream side of the communication portion.
【請求項2】 内部に吸着剤が充填されたケース本体の
一端壁部に前記液溜めケースが隣接して設けられ、前記
一端壁部が液化燃料を溜める凹部を有し、前記吸い上げ
通路の開放端が前記凹部の底に近接していることを特徴
とする請求項1記載のキャニスタ。
2. The liquid storage case is provided adjacent to one end wall of a case body filled with an adsorbent, the one end wall has a recess for storing liquefied fuel, and the suction passage is opened. The canister of claim 1, wherein an end is proximate a bottom of the recess.
【請求項3】 内部に吸着剤が充填されたケース本体の
一端壁部に前記液溜めケースが隣接して設けられ、前記
一端壁部に対して立ち上がる前記液溜めケースの側面
に、前記吸い上げ通路の開放端が近接していることを特
徴とする請求項1記載のキャニスタ。
3. The liquid reservoir case is provided adjacent to one end wall of a case body filled with an adsorbent, and the suction passage is provided on a side surface of the liquid reservoir case that rises with respect to the one end wall. The canister according to claim 1, wherein the open ends of the canisters are close to each other.
JP11131462A 1999-05-12 1999-05-12 Canister with liquified fuel treating function Pending JP2000320406A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11131462A JP2000320406A (en) 1999-05-12 1999-05-12 Canister with liquified fuel treating function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11131462A JP2000320406A (en) 1999-05-12 1999-05-12 Canister with liquified fuel treating function

Publications (1)

Publication Number Publication Date
JP2000320406A true JP2000320406A (en) 2000-11-21

Family

ID=15058535

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11131462A Pending JP2000320406A (en) 1999-05-12 1999-05-12 Canister with liquified fuel treating function

Country Status (1)

Country Link
JP (1) JP2000320406A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6589319B2 (en) * 1999-04-26 2003-07-08 Toyo Roki Seizo Kabushiki Kaisha Canister having liquefied fuel treating function
CN102434327A (en) * 2010-09-29 2012-05-02 现代自动车株式会社 Canister for vehicles and fuel supply system provided with the same
JP2016017421A (en) * 2014-07-07 2016-02-01 三菱自動車工業株式会社 Canister

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6589319B2 (en) * 1999-04-26 2003-07-08 Toyo Roki Seizo Kabushiki Kaisha Canister having liquefied fuel treating function
CN102434327A (en) * 2010-09-29 2012-05-02 现代自动车株式会社 Canister for vehicles and fuel supply system provided with the same
JP2016017421A (en) * 2014-07-07 2016-02-01 三菱自動車工業株式会社 Canister

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