JPH0615298B2 - Automotive fuel tank paper ejector - Google Patents
Automotive fuel tank paper ejectorInfo
- Publication number
- JPH0615298B2 JPH0615298B2 JP60179820A JP17982085A JPH0615298B2 JP H0615298 B2 JPH0615298 B2 JP H0615298B2 JP 60179820 A JP60179820 A JP 60179820A JP 17982085 A JP17982085 A JP 17982085A JP H0615298 B2 JPH0615298 B2 JP H0615298B2
- Authority
- JP
- Japan
- Prior art keywords
- tank
- separator chamber
- vapor pipe
- vapor
- fuel
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
- B60K15/03504—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は自動車用燃料タンクのベーパ排出装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel tank vapor discharge device for an automobile.
従来の技術 自動車用燃料タンクにあつては、ベーパの発生によつて
タンク内圧が上昇して燃料供給に支障を来したり、タン
ク本体が変形したりすることのないようにベーパ導出チ
ユーブで発生ベーパをタンク本体外に抜いてキヤニスタ
に導き、このキヤニスタでパージ空気と共に機関の吸気
通路に供給，処理するようにしている。これを、第７図
によつて説明すると、20はタンク本体を示し、該タンク
本体20内の上部空間Ｓにセパレータ室21を配設してあ
る。このセパレータ室21の底壁および周壁上部には連通
孔22，23を形成してあると共に、上壁にはタンク本体20
の上壁を貫通してタンク本体外に突出するベーパパイプ
24を配設してあり、このベーパパイプ24に図外のキヤニ
スタに連絡するベーパ導出チユーブ25を接続してある。
ベーパパイプ24は燃料が満杯状態での車両の急旋回時お
よび車体の最大傾斜時にあつてもタンク内液面よりも高
くなる位置に設定されている。2. Description of the Related Art In a fuel tank for automobiles, it is generated in the vapor discharge tube so that the internal pressure of the tank rises due to the generation of vapor, which hinders the fuel supply and the tank body is not deformed. The vapor is taken out of the tank body and guided to the canister, and the canister supplies and treats it with the purge air to the intake passage of the engine. This will be described with reference to FIG. 7. Reference numeral 20 denotes a tank main body, and a separator chamber 21 is arranged in an upper space S inside the tank main body 20. Communication holes 22 and 23 are formed in the bottom wall and the upper part of the peripheral wall of the separator chamber 21, and the tank main body 20 is formed in the upper wall.
Vapor pipe that penetrates the upper wall and projects outside the tank body
24 is provided, and a vapor lead-out tube 25 for connecting to a canister (not shown) is connected to the vapor pipe 24.
The vapor pipe 24 is set at a position higher than the liquid level in the tank even when the vehicle makes a sharp turn while the fuel is full and when the vehicle body leans to the maximum.
この従来の装置によれば、タンク本体20が実線で示すタ
ンク内液面と略平行な水平状態にある時は、発生ベーパ
は連通孔22，23よりセパレータ室21に流入し、ベーパパ
イプ24によりタンク本体20外に抜かれてベーパ導出チユ
ーブ25を介して図外のキヤニスタに導出される。車体が
右方に最大に傾斜し、あるいは左方に急旋回した場合、
連通孔22は第７図(イ)線で示すタンク内液面に没する
が、連通孔23およびベーパパイプ24は該液面よりも上位
を確保し、また、車体が左方に最大に傾斜し、あるいは
右方に急旋回した場合、連通孔22，23は第７図(ロ)線で
示すタンク内液面に没するが、ベーパパイプ24は該液面
よりも上位を確保し、何れの場合も液動によるベーパパ
イプ24への直接的な燃料の流入を回避しようとするもの
である。この類似構造は、例えば特開昭５７−３７０１
６号公報に示されている。According to this conventional apparatus, when the tank body 20 is in a horizontal state substantially parallel to the liquid level in the tank shown by the solid line, the generated vapor flows into the separator chamber 21 through the communication holes 22 and 23, and the tank is moved by the vapor pipe 24. It is pulled out of the main body 20 and led out to a canister (not shown) via a vapor lead-out tube 25. If the car body leans to the right or turns sharply to the left,
The communication hole 22 is submerged in the liquid level in the tank shown by the line (a) in FIG. 7, but the communication hole 23 and the vapor pipe 24 ensure a higher position than the liquid level, and the vehicle body tilts to the left to the maximum. , Or when turning sharply to the right, the communication holes 22 and 23 are submerged in the liquid level in the tank shown in Fig. 7 (b), but the vapor pipe 24 secures a higher level than the liquid level, and in any case Also tries to avoid direct inflow of fuel into the vapor pipe 24 due to liquid motion. This similar structure is disclosed, for example, in JP-A-57-3701.
No. 6 publication.
発明が解決しようとする問題点 車体の最大傾斜時あるいは急旋回時等の液動によるベー
パパイプ24への直接的な燃料流入は回避することができ
るが、連通孔22，23が第７図(ロ)線で示すタンク内液面
に没した状態で長時間駐車するような場合、タンク本体
20の内圧、即ち、上部空間Ｓの圧力がベーパ発生と共に
上昇すると、この圧力上昇によつて燃料がセパレータ室
21内に押上げられ、該セパレータ室21内の液位が上昇し
て燃料がベーパパイプ24に流入し、燃料がタンク本体外
に流出してしまうおそれがある。このようなことから、
セパレータ室21は極力その容積を大きくして、しかも、
タンク本体20内に燃料満杯時の液面よりも上方に配設す
る必要があつて、タンク本体20の有効容積を狭めてしま
う不具合が指摘されている。Problems to be Solved by the Invention Although it is possible to avoid direct fuel inflow into the vapor pipe 24 due to liquid motion at the time of maximum leaning or sudden turning of the vehicle body, the communication holes 22 and 23 are provided in FIG. When you park for a long time while being immersed in the liquid level inside the tank indicated by the line
When the internal pressure of 20, that is, the pressure of the upper space S rises with the vapor generation, the fuel rises due to this pressure rise.
There is a possibility that the fuel is pushed up into the separator chamber 21, the liquid level in the separator chamber 21 rises, the fuel flows into the vapor pipe 24, and the fuel flows out of the tank body. From such a thing,
The separator chamber 21 has its volume increased as much as possible, and
It has been pointed out that the tank body 20 needs to be disposed above the liquid level when the fuel is full, and the effective volume of the tank body 20 is narrowed.
そこで、本発明タトンク本体の容積を狭めることなく、
燃料の外部流出を確実に防止することができる自動車用
燃料タンクのベーパ排出装置を提供するものである。Therefore, without reducing the volume of the tatonk body of the present invention,
(EN) Provided is a vapor discharging device for a fuel tank for an automobile, which can surely prevent fuel from flowing out.
問題を解決するための手段 タンク本体内に、上側部に連通孔を有するセパレータ室
をタンク本体上壁の一側辺寄りで、かつ、燃料の満杯状
態時に最大に車体が傾斜しても、前記連通孔がタンク内
液面下とならない高さ位置に配設して、このセパレータ
室の上側部に第１ベーパパイプを連通接続し、該第１ベ
ーパパイプの他端開口部をタンク本体外に突出配置する
と共に、前記セパレータ室の下側部に第２ベーパパイプ
を連通接続して、該第２ベーパパイプの他端開口部を、
タンク内液面とタンク本体上壁との間の空間部に、前記
タンク本体上壁のセパレータ室配置側と反対側の側辺
と、該側辺と隣接する他の側辺とでなす隅部寄りに配置
してある。Means for Solving the Problem In the tank body, a separator chamber having a communication hole in the upper portion is provided near one side of the tank body upper wall, and even when the vehicle body is tilted to the maximum when the fuel is full, The communication hole is disposed at a height position not below the liquid level in the tank, the first vapor pipe is connected to the upper side of the separator chamber, and the other end opening of the first vapor pipe is projected outside the tank body. At the same time, a second vapor pipe is communicatively connected to the lower side portion of the separator chamber, and the other end opening of the second vapor pipe is
In a space between the liquid level in the tank and the upper wall of the tank main body, a corner formed by a side of the upper wall of the tank main body opposite to the separator chamber arrangement side and another side adjacent to the side. It's located closer to you.
作 用 タンク本体が水平状態にある時はもとより、車体が最大
に傾斜した時にあつても、セパレータ室の上側部の連通
孔はタンク内液面よりも上位にあるため、タンク本体内
の上部空間に発生するベーパをセパレータ室を経由して
第１ベーパパイプよりタンク本体外に導出する。車両の
急旋回時には旋回方向によつてセパレータ室の上側部の
連通孔が一時的にタンク内液面下に没することがある
が、連通孔からセパレータ室に流入する燃料は極く僅か
であり、タンク本体外への流出はない。Not only when the tank body is in a horizontal position but also when the vehicle body is tilted to the maximum, the communication hole in the upper part of the separator chamber is above the liquid level in the tank, so the upper space inside the tank body The vapor generated in the above is led out of the tank main body from the first vapor pipe through the separator chamber. When the vehicle makes a sharp turn, the communication hole in the upper part of the separator chamber may temporarily be submerged below the liquid level in the tank depending on the turning direction, but the fuel flowing from the communication hole into the separator chamber is very small. , There is no outflow to the outside of the tank body.
実施例 以下、本発明の実施例を図面と共に詳述する。Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
第１〜３図において、１はタンク本体を示し、このタン
ク本体１の上部空間、即ち、タンク内液面とタンク本体
上壁２との間の空間部Ｓにはセパレータ室３を配設して
ある。このセパレータ室３はその上側部、例えば上壁に
連通孔４を形成してあり、前記空間部Ｓにタンク本体上
壁２の一側辺寄り、例えば上壁後部の右側寄りに配設し
てある。1 to 3, reference numeral 1 denotes a tank main body, and a separator chamber 3 is provided in an upper space of the tank main body 1, that is, a space S between a liquid level in the tank and an upper wall 2 of the tank main body. There is. The separator chamber 3 has a communication hole 4 formed in an upper portion thereof, for example, an upper wall, and is disposed in the space S near one side of the tank main body upper wall 2, for example, near the right side of the rear portion of the upper wall. is there.
５はセパレータ室４の上側部、例えば周壁上部に連通接
続した第１ベーパパイプで、その他端開口部５ａをタン
ク本体１外に突出配置してある。Reference numeral 5 is a first vapor pipe that is connected to the upper side of the separator chamber 4, for example, the upper portion of the peripheral wall, and the other end opening 5a is arranged so as to project outside the tank body 1.
６はセパレータ室３の下側部、例えば底壁を貫通して連
通接続した第２ベーパパイプで、その他端開口部６ａは
前記空間部Ｓに、タンク本体上壁２のセパレータ室配置
側と反対側の側辺、従つて、本実施例では上壁前部と、
該上壁前部と隣接する他の側辺、例えば左側辺とでなす
隅部寄りに配置してある。また、この第２ベーパパイプ
６は下方に適宜の勾配をもつて配設してあつて、セパレ
ータ室３に燃料が流入しても、該第２ベーパパイプ６に
よつて速かにタンク本体１内に流下できるようにしてあ
る。ここで、セパレータ室３は燃料が満杯状態で車体が
最大に傾斜しても、上壁の連通孔４がタンク内液面下と
ならない高さ位置に配置される。また、このセパレータ
室３の容積と連通孔４の径は、車両の急旋回時に連通孔
４がタンク内液面下となつて、該連通孔４よりセパレー
タ室３内に燃料が流入する場合でも、車両の旋回時間内
にセパレータ室３が満杯とならないように任意に設定さ
れる。Reference numeral 6 denotes a lower side portion of the separator chamber 3, for example, a second vapor pipe penetratingly connected to penetrate the bottom wall, and the other end opening 6a is provided in the space S on the side opposite to the separator chamber arrangement side of the tank main body upper wall 2. Therefore, in the present embodiment, the upper wall front portion,
It is arranged near the corner formed by the other side edge adjacent to the front portion of the upper wall, for example, the left side edge. Further, the second vapor pipe 6 is arranged downward with an appropriate slope so that even if the fuel flows into the separator chamber 3, the second vapor pipe 6 allows the second vapor pipe 6 to quickly enter the tank body 1. It is designed so that it can flow down. Here, the separator chamber 3 is arranged at a height position where the communication hole 4 in the upper wall is not below the liquid level in the tank even when the vehicle is tilted to the maximum with the fuel being full. Further, the volume of the separator chamber 3 and the diameter of the communication hole 4 are set so that even if the communication hole 4 is located below the liquid level in the tank and the fuel flows into the separator chamber 3 through the communication hole 4 when the vehicle makes a sharp turn. , Is arbitrarily set so that the separator chamber 3 does not become full within the turning time of the vehicle.
次に以上の実施例装置の作用について説明する。Next, the operation of the apparatus of the above embodiment will be described.
タンク本体１が第２，３図実線で示すタンク内液面と平
行な水平状態にある時は、発生ベーパは第２ベーパパイ
プ６の他端開口部６ａおよび連通孔４からセパレータ室
３に入り、第１ベーパパイプ５から該第１ベーパパイプ
５に接続したベーパ導出チユーブ25を経由して図外のキ
ヤニスタへ導かれる。When the tank body 1 is in a horizontal state parallel to the liquid level in the tank shown by the solid lines in FIGS. 2 and 3, the generated vapor enters the separator chamber 3 through the other end opening 6a of the second vapor pipe 6 and the communication hole 4. It is guided from the first vapor pipe 5 to a canister (not shown) via a vapor deriving tube 25 connected to the first vapor pipe 5.
車体が右側又は左側に最大に傾斜した場合、例えば、車
体が右側に最大に傾斜した場合、第２ベーパパイプ６の
他端開口部６ａは第２図(a)線で示すようにタンク内液
面下に没するが、セパレータ室３およびその上壁の連通
孔４はタンク内液面よりも上位にあるため、発生ベーパ
は連通孔４よりセパレータ室３内に流入し、前述と同様
に発生ベーパの排出を良好に行えて、空間部Ｓとセパレ
ータ室３との間に圧力差が生じることがなく、従つて、
第２ベーパパイプ６からセパレータ室３に燃料が押上げ
られることはない。車体が元の状態に戻れば、第２ベー
パパイプ６の途中にまで流入した燃料は、該第２ベーパ
パイプ６の勾配により直ちに流下する。When the vehicle body is tilted to the right or left side to the maximum, for example, when the vehicle body is tilted to the right side to the maximum, the other end opening 6a of the second vapor pipe 6 is located at the liquid level in the tank as shown by the line (a) in FIG. Although it is submerged below, since the separator chamber 3 and the communication hole 4 in the upper wall thereof are higher than the liquid level in the tank, the generated vapor flows into the separator chamber 3 through the communication hole 4 and is generated in the same manner as described above. Can be satisfactorily discharged, and there is no pressure difference between the space S and the separator chamber 3, and accordingly,
The fuel is not pushed up from the second vapor pipe 6 to the separator chamber 3. When the vehicle body returns to the original state, the fuel that has flowed into the middle of the second vapor pipe 6 immediately flows down due to the gradient of the second vapor pipe 6.
逆に、車体が左方に最大に傾斜した場合、第２ベーパパ
イプ６の他端開口部６ａおよびセパレータ室３の連通孔
４は共に第２図(b)線で示すタンク内液面よりも上位に
あるため、この場合も前述と同様に発生ベーパの排出は
良好に行われる。On the contrary, when the vehicle body is tilted to the left to the maximum, the other end opening 6a of the second vapor pipe 6 and the communication hole 4 of the separator chamber 3 are both higher than the liquid level in the tank shown by the line (b) in FIG. Therefore, in this case as well, the generated vapor is satisfactorily discharged in the same manner as described above.
車体が最大に前傾した場合、第２ベーパパイプ６の他端
開口部６ａは第３図(c)線で示すタンク内液面下に没す
るが、セパレータ室３およびその上壁の連通孔４はタン
ク内液面よりも上位にあるため、前述した車体が右方に
傾斜した場合と同様に発生ベーパの排出に何等支障を来
すことはない。逆に、車体が最大に傾斜した場合、第２
ベーパパイプ６の他端開口部６ａおよびセパレータ室３
は共に第３図(d)線で示すタンク内液面よりも上位にあ
るため、前傾時と同様にベーパの排出に何等支障を来す
ことはない。When the vehicle body leans forward to the maximum, the other end opening 6a of the second vapor pipe 6 is submerged below the liquid level in the tank shown by the line (c) in FIG. 3, but the separator chamber 3 and the communication hole 4 in the upper wall thereof. Is higher than the liquid level in the tank, it does not hinder the discharge of the generated vapor in the same way as when the vehicle body leans to the right. On the contrary, if the vehicle body leans to the maximum, the second
The other end opening 6a of the vapor pipe 6 and the separator chamber 3
Since both are higher than the liquid level in the tank shown by the line (d) in FIG. 3, they do not hinder vapor discharge in the same way as when leaning forward.
次に、車両が急旋回した時、例えば右方に旋回した場
合、第２ベーパパイプ６の他端開口部６ａは第２図(e)
線で示すタンク内液面下に没するが、セパレータ室３は
該液面よりも上位にあるため、連通孔４からセパレータ
室３内への燃料流入は全くなく、また、該連通孔４から
のベーパ排出が確保される。旋回走行が終れば、第２ベ
ーパパイプ６の途中まで流入した燃料は、該第２ベーパ
パイプ６の勾配により直ちに流下する。逆に車両が左方
に急旋回した場合、セパレータ室３は第２図鎖線(f)で
示すタンク内液面下に没し、連通孔４よりセパレータ室
３に燃料が流入するが、燃料がセパレータ室３に充満す
る時間が旋回に要する時間よりも長くなるようにセパレ
ータ室３の容積および連通孔４の径を任意に設定してお
くことにより燃料のタンク外流出を回避することができ
る。車両が元の状態に戻れば、セパレータ室３内の燃料
は第２ベーパパイプ６によりその傾斜に沿ってタンク本
体１内へ戻される。Next, when the vehicle makes a sharp turn, for example, when making a right turn, the other end opening 6a of the second vapor pipe 6 is shown in FIG. 2 (e).
Although it is submerged below the liquid level in the tank indicated by the line, since the separator chamber 3 is located above the liquid level, there is no fuel flow from the communication hole 4 into the separator chamber 3, and from the communication hole 4 The vapor discharge of is secured. When the turning traveling is completed, the fuel that has flowed into the second vapor pipe 6 halfway immediately flows down due to the gradient of the second vapor pipe 6. On the contrary, when the vehicle makes a sharp turn to the left, the separator chamber 3 sinks below the liquid level in the tank indicated by the chain line (f) in FIG. 2, and the fuel flows into the separator chamber 3 through the communication hole 4, but the fuel By setting the volume of the separator chamber 3 and the diameter of the communication hole 4 arbitrarily so that the time for filling the separator chamber 3 is longer than the time required for turning, fuel can be prevented from flowing out of the tank. When the vehicle returns to the original state, the fuel in the separator chamber 3 is returned by the second vapor pipe 6 into the tank body 1 along the inclination thereof.
第４〜６図に示す実施例は、タンク本体１の上壁２が前
後に有段成形されていて、略後半部に膨出部１ａを形成
したタンク本体１に本発明を適用したものである。The embodiment shown in FIGS. 4 to 6 is one in which the present invention is applied to the tank main body 1 in which the upper wall 2 of the tank main body 1 is formed stepwise in the front-rear direction and the bulging portion 1a is formed in the substantially rear half portion. is there.
上壁に連通孔４を有するセパレータ室３は、膨出部１ａ
内の上方略中央部に配置してある。第１ベーパパイプ５
の他端開口部５ａをタンク本体１外に突出配置してある
点、および第２ベーパパイプ６の他端開口部６ａを空間
部Ｓに、タンク本体上壁２の前部と、該上壁前部と隣接
する他の側辺とでなす速部寄りに配置してある点等は前
記実施例の場合と同様である。本実施例では、第２ベー
パパイプ６をその途中でＵ字状に曲折して、この曲折部
分を他端開口部６ａの配置側と反対側の隅部寄りに配置
して、第２ベーパパイプ６の前側部をタンク本体１の前
側部と略平行に配置してある。The separator chamber 3 having the communication hole 4 in the upper wall has the bulging portion 1a.
It is arranged in the upper center of the inside. First vapor pipe 5
Of the other end opening 5a of the second vapor pipe 6, and the other end opening 6a of the second vapor pipe 6 in the space S, the front of the tank main body upper wall 2 and the front of the upper wall. Similar to the case of the above-mentioned embodiment, it is arranged closer to the speed part formed by the part and another side adjacent to the part. In the present embodiment, the second vapor pipe 6 is bent in a U shape in the middle thereof, and this bent portion is arranged near the corner opposite to the side where the other end opening 6a is arranged. The front side portion is arranged substantially parallel to the front side portion of the tank body 1.
この実施例の場合も、車体の最大傾斜時におけるベーパ
排出機能および燃料のタンク外流出防止機能、更には、
車両の急旋回時における燃料のタンク外流出防止機能は
前記実施例の場合と略同様であるので説明は省略する。Also in the case of this embodiment, the vapor discharging function and the fuel outflow prevention function at the time of maximum inclination of the vehicle body, further,
The function of preventing the fuel from flowing out of the tank when the vehicle suddenly turns is substantially the same as that in the above-mentioned embodiment, and therefore its explanation is omitted.
但し、車両が左方向へ急旋回した場合には、第２ベーパ
パイプ６の他端開口部６ａおよびセパレータ室３の略半
部が第５図(f)線で示すタンク内液面下に没するが、第
２ベーパパイプ６のＵ字状の曲折部６ｂが該タンク内液
面よりも上位となるため、第２ベーパパイプ６内への燃
料の流入は、該第２ベーパパイプ６のタンク本体１前側
部と略平行な前側部内にとどまり、それより上方に、つ
まり、セパレータ室３側に流入することはない。However, when the vehicle makes a sharp turn to the left, the other end opening 6a of the second vapor pipe 6 and substantially half of the separator chamber 3 sink below the liquid level in the tank shown by the line (f) in FIG. However, since the U-shaped bent portion 6b of the second vapor pipe 6 is located above the liquid level in the tank, the fuel flows into the second vapor pipe 6 at the front side of the tank body 1 of the second vapor pipe 6. Stays in the front side portion substantially parallel to and does not flow upward, that is, do not flow into the separator chamber 3 side.
発明の効果 以上のように本発明によれば、セパレータ室はタンク本
体内の上壁の一側辺寄りで、かつ、燃料の満杯状態時に
車体が最大に傾斜しても上側の連通孔がタンク内液面と
ならない高さ位置に配設してあるので、車体の最大傾斜
時でもセパレータ室内への燃料流入を回避できることは
勿論、第２ベーパパイプの他端開口部を、タンク本体上
壁のセパレータ室配置側と反対側の側辺と、該側辺と隣
接する他の側辺とでなす隅部寄りに配置してあるから、
車両の急旋回時には旋回方向によって、第２ベーパパイ
プの開口部がタンク内液面下に没してもセパレータ室は
タンク内上部間かにあって第２ベーパパイプからセパレ
ータ室への燃料流入を回避でき、また、逆方向の場合に
はセパレータ室の連通孔が一時的にタンク内液面下に没
することがあるが、連通孔からセパレータ室に流入する
燃料は極く僅かに抑えることができて、セパレータ室に
燃料が充満するようなことがなく、従つて、タンク外へ
の燃料流出を確実に防止できてベーパ排出を行わせるこ
とができる。しかも、セパレータ室は車両急旋回時の少
量の燃料流入を考慮した上で可及的に小さく形成するこ
とができるので、タンク本体内での占有スペースは非常
に小さく、従つて、タンク本体の有効容積を狭めること
がないという実用上多大な効果を有する。As described above, according to the present invention, the separator chamber is near one side of the upper wall in the tank body, and the upper communication hole is the tank even if the vehicle body tilts to the maximum when the fuel is full. Since it is arranged at a height position that does not become the internal liquid level, it is possible to avoid fuel inflow into the separator chamber even when the vehicle body is tilted to the maximum, and of course, the other end opening of the second vapor pipe is connected to the separator on the upper wall of the tank body. Since it is arranged near the corner formed by the side opposite to the chamber arrangement side and the other side adjacent to the side,
Depending on the turning direction when the vehicle is turning suddenly, even if the opening of the second vapor pipe is submerged below the liquid level in the tank, the separator chamber is located between the upper part of the tank and the fuel flow from the second vapor pipe into the separator chamber can be avoided. Also, in the opposite direction, the communication hole of the separator chamber may be temporarily submerged below the liquid level in the tank, but the fuel flowing into the separator chamber from the communication hole can be suppressed very slightly. Therefore, the separator chamber is not filled with the fuel, so that the fuel can be reliably prevented from flowing out of the tank and the vapor can be discharged. Moreover, since the separator chamber can be formed as small as possible in consideration of a small amount of fuel inflow when the vehicle makes a sharp turn, the space occupied in the tank body is very small, and therefore the effective tank body It has a great practical effect of not reducing the volume.
第１図は本発明の一実施例の斜視図、第２図，第３図は
それぞれ第１図のII矢視，II矢視方向から見た略示的断
面説明図、第４図は本発明の異なる例を示す斜視図、第
５図，第６図はそれぞれ第４図のＶ矢視，VI矢視方向か
ら見た略示的断面説明図、第７図は従来の装置を示す略
示的断面説明図である。 １……タンク本体、２……タンク本体の上壁、３……セ
パレータ室、４……連通孔、５……第１ベーパパイプ、
５ａ……他端開口部、６……第２ベーパパイプ、６ａ…
…他端開口部、Ｓ……空間部。FIG. 1 is a perspective view of an embodiment of the present invention, FIGS. 2 and 3 are schematic cross-sectional explanatory views seen from the direction of arrows II and II of FIG. 1, respectively, and FIG. FIG. 5 is a perspective view showing a different example of the invention, FIG. 5 and FIG. 6 are schematic cross-sectional explanatory views seen from the directions of arrows V and VI of FIG. 4, respectively, and FIG. FIG. 1 ... Tank body, 2 ... Tank body upper wall, 3 ... Separator chamber, 4 ... Communication hole, 5 ... First vapor pipe,
5a ... other end opening, 6 ... second vapor pipe, 6a ...
... Opening at the other end, S ... Space.
Claims (1)
セパレータ室をタンク本体上壁の一側辺寄りで、かつ、
燃料の満杯状態時に車体が最大に傾斜しても、前記連通
孔がタンク内液面下とならない高さ位置に配設して、こ
のセパレータ室の上側部に第１ベーパパイプを連通接続
し、該第１ベーパパイプの他端開口部をタンク本体外に
突出配置すると共に、前記セパレータ室の下側部に第２
ベーパパイプを連通接続して、該第２ベーパパイプの他
端開口部を、タンク内液面とタンク本体上壁との間の空
間部に、前記タンク本体上壁のセパレータ室配置側と反
対側の側辺と、該側辺と隣接する他の側辺とでなす隅部
寄りに配置したことを特徴とする自動車用燃料タンクの
ベーパ排出装置。1. A separator chamber having a communication hole in an upper portion thereof is provided in the tank body near one side of an upper wall of the tank body, and
Even when the vehicle body is tilted to the maximum when the fuel is full, the communication hole is arranged at a height position not below the liquid level in the tank, and the first vapor pipe is connected to the upper portion of the separator chamber for communication. The other end opening of the first vapor pipe is arranged so as to project outside the tank body, and a second side is provided at the lower side of the separator chamber.
A vapor pipe is connected in communication, and the other end opening of the second vapor pipe is provided in a space between the liquid level in the tank and the upper wall of the tank main body, on the side opposite to the separator chamber arrangement side of the upper wall of the tank main body. A vapor discharging device for a fuel tank for an automobile, wherein the vapor discharging device is arranged near a corner formed by a side and another side adjacent to the side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60179820A JPH0615298B2 (en) | 1985-08-15 | 1985-08-15 | Automotive fuel tank paper ejector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60179820A JPH0615298B2 (en) | 1985-08-15 | 1985-08-15 | Automotive fuel tank paper ejector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6239324A JPS6239324A (en) | 1987-02-20 |
| JPH0615298B2 true JPH0615298B2 (en) | 1994-03-02 |
Family
ID=16072459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60179820A Expired - Fee Related JPH0615298B2 (en) | 1985-08-15 | 1985-08-15 | Automotive fuel tank paper ejector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0615298B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH081951Y2 (en) * | 1984-01-24 | 1996-01-24 | トヨタ自動車株式会社 | Automotive fuel tank structure |
-
1985
- 1985-08-15 JP JP60179820A patent/JPH0615298B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6239324A (en) | 1987-02-20 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |