JPH0535291Y2 - - Google Patents
Info
- Publication number
- JPH0535291Y2 JPH0535291Y2 JP2324888U JP2324888U JPH0535291Y2 JP H0535291 Y2 JPH0535291 Y2 JP H0535291Y2 JP 2324888 U JP2324888 U JP 2324888U JP 2324888 U JP2324888 U JP 2324888U JP H0535291 Y2 JPH0535291 Y2 JP H0535291Y2
- Authority
- JP
- Japan
- Prior art keywords
- installation chamber
- liquid
- liquid level
- fuel
- chamber
- 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
- 239000007788 liquid Substances 0.000 claims description 61
- 238000009434 installation Methods 0.000 claims description 46
- 239000000446 fuel Substances 0.000 claims description 17
- 239000002828 fuel tank Substances 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000004020 conductor Substances 0.000 description 14
- 238000010586 diagram Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Landscapes
- Level Indicators Using A Float (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、液面検出器、特に自動車の燃料タン
クの底部に突部が形成されて、タンク内底部が突
部で区分されている自動車の燃料タンクに用いら
れる液面検出装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to a liquid level detector, especially an automobile fuel tank in which a protrusion is formed at the bottom of the fuel tank, and the inner bottom of the tank is divided by the protrusion. The present invention relates to a liquid level detection device used in a fuel tank.
従来のこの種の自動車用燃料タンク用液面検出
装置として、例えば第４図に示すようなものがあ
る。この自動車用燃料タンク１は、その燃料タン
ク底部１ａに突部１ｂが形成された異形のタンク
であつて、その突部１ｂにより、ポンプ２を設置
した設置室３ａと、ポンプ２を設置しない非設置
室３ｂとに区分されている。またその設置室３ａ
には、上記のポンプ２に接続される吐出管４及び
エンジンで燃焼されなかつた余分な燃料が戻され
るリターンチユーブ５が配管されており、このリ
ターンチユーブ５の途中にはジエツトポンプ６が
組付けられている。このポンプ６には導液管７が
分岐状態で取り付けられており、この導液管７の
先端開口部にはフイルター８が取り付けられて該
フイルター８が上記の非設置室３ｂの内底部に位
置されている。これにより、燃料がリターンチユ
ーブ５を介してタンク１内に戻されるとき、導液
管７を介して非設置室３ｂ内の燃料が設置室３ａ
に送られるようになつているものである。
An example of a conventional liquid level detection device for a fuel tank of an automobile of this type is shown in FIG. 4. This automobile fuel tank 1 is an irregularly shaped tank in which a protrusion 1b is formed at the bottom 1a of the fuel tank. It is divided into an installation room 3b. Also, its installation room 3a
A discharge pipe 4 connected to the above-mentioned pump 2 and a return tube 5 to which excess fuel not combusted by the engine is returned are installed in the engine, and a jet pump 6 is installed in the middle of the return tube 5. ing. A liquid guide pipe 7 is attached to the pump 6 in a branched state, and a filter 8 is attached to the tip opening of the liquid guide pipe 7, and the filter 8 is located at the inner bottom of the non-installed chamber 3b. has been done. As a result, when the fuel is returned into the tank 1 via the return tube 5, the fuel in the non-installation chamber 3b is transferred to the installation chamber 3a via the liquid guide pipe 7.
It is now being sent to
９，９′は、液面検出器本体であつて、その一
方の液面検出器本体９は、設置室３ａ内に位置さ
れており、また他方の液面検出器本体９′は非設
置室３ｂ内に位置されている。そしてタンク１内
の燃料の液面レベルが降下して、突部１ｂの頂部
に達するまでは、両液面検出器本体９，９′が同
様のレベル信号を出すが、液面がレベルＢ以下に
低下すると、非設置室３ｂ内の燃料から消費し、
この非設置室３ｂ内の液面レベを液面検出器本体
９′で検出し、第３図の回路図に示すようにその
非設置室３ｂが空になつたところで設置室３ａ内
の液面レベルを液面検出器本体９で検出するよう
になつている。１０は細孔１１が穿設されてお
り、しかも突部１ａ上に設けられている仕切板で
あつて、この仕切板１０によつて車体に加速度
（横Ｇ）や傾斜が加わつたときの液面の変動によ
る検出誤差を抑制しフロート１２の上下動に伴う
指示計器（図示せず）の針振れを防止するように
構成されている。１３は燃料注入口を示す。 9 and 9' are liquid level detector bodies, one of which is located in the installation chamber 3a, and the other liquid level detector body 9' is located in a non-installation chamber. 3b. Then, until the liquid level of the fuel in the tank 1 falls and reaches the top of the protrusion 1b, both liquid level detector bodies 9 and 9' output the same level signal, but the liquid level is lower than level B. When the fuel decreases to , the fuel in the non-installation chamber 3b is consumed
The liquid level in the non-installation chamber 3b is detected by the liquid level detector body 9', and when the non-installation chamber 3b becomes empty, the liquid level in the installation chamber 3a is detected as shown in the circuit diagram of FIG. The level is detected by a liquid level detector main body 9. Reference numeral 10 denotes a partition plate in which pores 11 are perforated, and which is provided on the protrusion 1a. It is configured to suppress detection errors due to surface fluctuations and prevent needle deflection of an indicator (not shown) due to vertical movement of the float 12. 13 indicates a fuel injection port.
ところが、このような従来の液面検出装置にあ
つては、前記したように、その燃料タンク１内の
液面がレベルＢになると、その後はジエツトポン
プ６の動作により非設置室３ｂ内の液が設置室３
ａ内に送り込み、その非設置室３ｂ内の液が消費
されてから設置室３ａ内の液が消費されるように
なつている。そこで、例えばポンプ６の故障、導
液管７又はフイルター８の目詰り等により、非設
置室３ｂ内の液が設置室３ａに移行されず、その
状態で設置室３ａ内の液が遂次消費され、その設
置室３ａ内が空になれば、エンジンへの液供給が
なされなくなる。しかしながら、非設置室３ｂ内
には、液が溜つているため、燃料計の指示はまだ
液が残存しているように指示されているために、
その燃料計の指示量を信頼して走行していた結
果、走行中にエンストを生じるという不具合があ
つた。
However, in such a conventional liquid level detection device, as described above, when the liquid level in the fuel tank 1 reaches level B, the liquid in the non-installed chamber 3b is subsequently reduced by the operation of the jet pump 6. Installation room 3
After the liquid in the non-installation chamber 3b is consumed, the liquid in the installation chamber 3a is consumed. Therefore, for example, due to a failure of the pump 6, clogging of the liquid guide pipe 7 or filter 8, etc., the liquid in the non-installation chamber 3b is not transferred to the installation chamber 3a, and in this state, the liquid in the installation chamber 3a is gradually consumed. When the inside of the installation chamber 3a becomes empty, the fluid is no longer supplied to the engine. However, since liquid has accumulated in the non-installation chamber 3b, the fuel gauge indicates that there is still liquid remaining.
As a result of relying on the amount indicated by the fuel gauge, a problem occurred in which the engine stalled while driving.
本考案はかかる従来の不具合に着目してなされ
たもので、底部に設けられた突部により、燃料液
の注入口が設置された設置室と、注入口が設置さ
れていない非設置室とを有する燃料タンクの前記
両室に前記燃料液の液面レベルを検出する主副の
検出器本体をそれぞれ設置し、前記非設置室の燃
料液が空になつたところで設置室内の液面レベル
を主検出器本体で検出するようにした液面検出装
置において、前記主検出器本体の抵抗基盤に前記
設置室側の液面が零位置になつたとき、非設置室
側の液面検出回路に付加されて指示器が、零位置
を表示する抵抗を設けた液面検出器を提供するこ
とにある。
The present invention was developed by focusing on such conventional problems, and a protrusion provided at the bottom allows the installation chamber in which the fuel liquid injection port is installed and the non-installation chamber in which the injection port is not installed to be separated. Main and sub detector bodies for detecting the liquid level of the fuel liquid are respectively installed in both chambers of the fuel tank, and when the fuel liquid in the non-installed chamber becomes empty, the main and sub detector bodies are installed to detect the liquid level in the installation chamber. In a liquid level detection device configured to detect with the main detector body, when the liquid level on the installation chamber side reaches the zero position on the resistance base of the main detector body, a signal is added to the liquid level detection circuit on the non-installation chamber side. The object of the present invention is to provide a liquid level detector provided with a resistor to indicate the zero position.
従つてこの液面検出器によれば、設置室内の液
が消費されれば、付加抵抗の抵抗値が介在される
ため、非設置室内の液の有無にかかわらず指示器
における指示量が零を示すので、走行時における
エンストを未然に防止することができる。 Therefore, according to this liquid level detector, if the liquid in the installation chamber is consumed, the resistance value of the additional resistor is interposed, so the amount indicated by the indicator becomes zero regardless of the presence or absence of liquid in the non-installation chamber. Therefore, it is possible to prevent the engine from stalling during driving.
以下に本考案を第１図及び第２図に示す実施例
に基いて説明するが、本実施例の構造と、従来例
で説明した構造との同一部分は、従来例で使用し
た符号を付して、その同一構造部分の説明は省略
する。
The present invention will be explained below based on the embodiment shown in FIGS. 1 and 2. The same parts between the structure of this embodiment and the structure explained in the conventional example will be designated by the same reference numerals as in the conventional example. Therefore, the explanation of the same structural parts will be omitted.
即ち本実施例における燃料タンク１の形状は従
来例と同じであつて設置室３ａと非設置室３ｂと
に区分形成されている。そこで非設置室３ｂに
は、その非設置室３ａ内の液面レベルを検出する
検出器本体２４が、また設置室３ａには該設置室
３ａ内の液面レベルを検出する検出器本体２５が
設けられている。その検出器本体２４は第２図ロ
に示すように、パターン形成された抵抗体２４
ａ、その上部に形成された端子導体２４ｃ、抵抗
体２４ａと平行に形成された導体２４ｂで構成さ
れている。２４ｇはフロートに設けられて、抵抗
体２４ａと導体４４ｂに跨つて摺動する可動接点
を示す。また検出器本体２５は、第２図イに示す
ように、帯状に形成された抵抗体２５ａ、その上
部に形成された端子導体２５ｆ、抵抗体２５ａと
平行に形成された２本の導体２５ｂ，２５ｃ及び
２５ｂと２５ｃを接続する抵抗体２５ｅ、から構
成されている。なお２５ｇは抵抗体２５ａ及び導
体２５ｂ，２５ｃの上を摺動する可動接点であ
り、２５ｃの上を摺重する接点は、接点が下部に
摺動した場合、Ａ部で２５ｂ上に移ることができ
るように両導体パターン２５ｂ，２５ｃは形成さ
れている。 That is, the shape of the fuel tank 1 in this embodiment is the same as that of the conventional example, and is divided into an installation chamber 3a and a non-installation chamber 3b. Therefore, the non-installation chamber 3b has a detector body 24 for detecting the liquid level in the non-installation chamber 3a, and the installation chamber 3a has a detector body 25 for detecting the liquid level in the installation chamber 3a. It is provided. The detector body 24 has a patterned resistor 24 as shown in FIG.
a, a terminal conductor 24c formed on top of the terminal conductor 24c, and a conductor 24b formed parallel to the resistor 24a. Reference numeral 24g indicates a movable contact that is provided on the float and slides across the resistor 24a and the conductor 44b. Further, as shown in FIG. 2A, the detector body 25 includes a resistor 25a formed in a band shape, a terminal conductor 25f formed on the upper part of the resistor 25a, two conductors 25b formed parallel to the resistor 25a, 25c and a resistor 25e connecting 25b and 25c. Note that 25g is a movable contact that slides on the resistor 25a and conductors 25b and 25c, and the contact that slides on 25c cannot move onto 25b at part A when the contact slides downward. Both conductor patterns 25b and 25c are formed so as to be able to perform the same operation.
さらに、抵抗体２５ａの端子導体２５ｆは、第
１図に示すように、前記端子２４ｃと接続し、導
体２５ｂは、導体２４ｂと接続し、導体２５ｃ
は、アースに接続されている。 Furthermore, the terminal conductor 25f of the resistor 25a is connected to the terminal 24c, the conductor 25b is connected to the conductor 24b, and the conductor 25c
is connected to ground.
次にその作用について述べると、燃料タンク１
内の燃料が次第に消費され、その液面レベルが、
突部１ｂよりも降下すると、第４図で示すポンプ
６の動作で非設置室３ｂ内の液が、設置室３ａ内
に供給されて非設置室３ｂ内の液が消費された後
に、設置室３ａ内の液が消費されて燃料タンク１
内が空となるのであるが、前にも述べたようにそ
の非設置室３ｂ内の液を設置室３ａ内に移行する
移送系路に目詰り等を生じると、非設置室３ｂ内
の液は残存されたままとなつて、設置室３ａ内の
液が次第に減つていく、そしてこの設置室３ａ内
の液面レベルが降下し、フロートが底面に接近す
ると、フロート接点２５ｇによる導体２５ｂと２
５ｃとの導通が開路されるために、その導体２５
ｂと２５ｃとの間に抵抗体２５ｅが作用し、その
結果指示計器（図示せず）により指示される指示
値が零位となる。 Next, to explain its effect, the fuel tank 1
The fuel in the tank is gradually consumed, and the liquid level becomes
When descending below the protrusion 1b, the liquid in the non-installation chamber 3b is supplied into the installation chamber 3a by the operation of the pump 6 shown in FIG. The liquid in 3a is consumed and the fuel tank 1
However, as mentioned earlier, if the transfer line that transfers the liquid in the non-installed chamber 3b to the installed chamber 3a becomes clogged, the liquid in the non-installed chamber 3b becomes empty. remains and the liquid in the installation chamber 3a gradually decreases.As the liquid level in the installation chamber 3a drops and the float approaches the bottom, the conductors 25b and 2 are connected to the float contact 25g.
5c, so that its conductor 25
A resistor 25e acts between b and 25c, and as a result, the indicated value indicated by an indicating instrument (not shown) becomes zero.
従つて非設置室３ｂ内に液が残存されていて
も、その非設置室３ｂ内の液が設置室３ａ内に移
行されないという不具合が生じてもその設置室３
ａ内の液面レベルが低下すれば抵抗２５ｅの作用
で指示計器の指示値を零位に指示させることがで
きるので、従来のように液移送系路の故障によ
り、消費することができない非設置室３ｂ内の液
面レベルが指示されながらも、設置室３ａ内の液
消費によつてエントスを起すといつた問題点が解
消できる効果がある。
Therefore, even if liquid remains in the non-installation chamber 3b, even if a problem occurs in which the liquid in the non-installation chamber 3b is not transferred into the installation chamber 3a, the installation chamber 3
If the liquid level in a decreases, the indicating value of the indicator can be set to zero by the action of the resistor 25e. Even though the liquid level in the chamber 3b is indicated, it is possible to solve the problem of occurrence of entosus due to liquid consumption in the installation chamber 3a.
第１図は、本考案よりなる液面検出装置の実施
例を示した回路説明図、第２図イ，ロはそれぞれ
の検出器本体のパターン説明図、第３図は従来例
の回路説明図、第４図は従来例の構造説明図であ
る。
２４，２５……検出器本体、２５ｅ……抵抗
体。
Fig. 1 is a circuit explanatory diagram showing an embodiment of the liquid level detection device according to the present invention, Fig. 2 A and B are pattern explanatory diagrams of the respective detector bodies, and Fig. 3 is a circuit explanatory diagram of a conventional example. , FIG. 4 is a structural explanatory diagram of a conventional example. 24, 25...Detector body, 25e...Resistor.
Claims (1)
入口１３が設置された設置室３ａと、注入口１３
が設置されていない非設置室３ｂとを有する燃料
タンクの前記両室３ａ，３ｂに前記燃料液の液面
レベルを検出する主副の検出器本体２４，２５を
それぞれ設置し、前記非設置室３ｂの燃料液が空
になつたところで設置室３ａ内の液面レベルを主
検出器本体２５で検出するようにした液面検出装
置において、前記主検出器本体２５の抵抗基盤に
前記設置室３ａ側の液面が零位置になつたとき、
非設置室側の液面検出回路に付加されて指示器
が、零位置を表示する抵抗体２５ｅを設けたこと
を特徴とする液面検出器。 A protrusion 1b provided at the bottom provides an installation chamber 3a in which a fuel liquid injection port 13 is installed, and an installation chamber 3a in which a fuel liquid injection port 13 is installed.
Main and sub detector bodies 24 and 25 for detecting the level of the fuel liquid are respectively installed in the two chambers 3a and 3b of the fuel tank, which has a non-installation chamber 3b in which a non-installation chamber 3b is not installed. In the liquid level detection device, the main detector main body 25 detects the liquid level in the installation chamber 3a when the fuel liquid 3b becomes empty. When the liquid level on the side reaches the zero position,
A liquid level detector characterized in that a resistor 25e is added to the liquid level detection circuit on the side of the non-installation chamber so that the indicator indicates the zero position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2324888U JPH0535291Y2 (en) | 1988-02-24 | 1988-02-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2324888U JPH0535291Y2 (en) | 1988-02-24 | 1988-02-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01128128U JPH01128128U (en) | 1989-09-01 |
| JPH0535291Y2 true JPH0535291Y2 (en) | 1993-09-08 |
Family
ID=31242077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2324888U Expired - Lifetime JPH0535291Y2 (en) | 1988-02-24 | 1988-02-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0535291Y2 (en) |
-
1988
- 1988-02-24 JP JP2324888U patent/JPH0535291Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01128128U (en) | 1989-09-01 |
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