JPH0743617Y2 - Liquid level detector for fuel tank - Google Patents
Liquid level detector for fuel tankInfo
- Publication number
- JPH0743617Y2 JPH0743617Y2 JP1989004751U JP475189U JPH0743617Y2 JP H0743617 Y2 JPH0743617 Y2 JP H0743617Y2 JP 1989004751 U JP1989004751 U JP 1989004751U JP 475189 U JP475189 U JP 475189U JP H0743617 Y2 JPH0743617 Y2 JP H0743617Y2
- Authority
- JP
- Japan
- Prior art keywords
- liquid level
- fuel
- installation chamber
- fuel tank
- tank
- 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
- 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、自動車の燃料タンク、特にタンクの底部に突
部が形成されて、タンク内底部が突部で２室に区分され
ている双胴型燃料タンクの液面検出装置に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a fuel tank of an automobile, in particular, a protrusion is formed on the bottom of the tank, and the inner bottom of the tank is divided into two chambers by the protrusion. The present invention relates to a liquid level detection device for a body fuel tank.
従来のこの種の自動車用燃料タンクの液面検出装置とし
ては、例えば第２図及び第３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、その燃料タンク底面
1aに、不図示の突条の燃料タンク取付部を避けるための
突部1bが形成された異形（双胴型）のタンクであって、
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った余分な燃料が戻さ
れるリターンチューブ５が配管されており、このリター
ンチューブ５の途中にはジェットポンプ６が組付けられ
ている。このポンプ６には導液管７の分岐状態で取り付
けられており、この導液管７の先端が上記の非設置室3b
の内底部に位置されている。これにより、燃料がリター
ンチューブ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
ようになっている。８は、設置室3a内に設置されている
残液量警告センサであって、この残液量警告センサ８に
は警告灯9,メインスイッチ10を介して電源11に接続され
ており、設置室3aの液量が一定量以下となれば、そのセ
ンサ８の作用で警告灯９が点灯し、設置室3a内の液量が
少なくなっていることが知らされるものである。2. Description of the Related Art As a conventional liquid level detecting device for a fuel tank for an automobile of this type, there is one as shown in FIGS. 2 and 3, for example. This vehicle fuel tank 1 has a bottom surface
A variant (two-body type) tank in which a protrusion 1b for avoiding a fuel tank mounting portion of a protrusion (not shown) is formed in 1a,
The protrusion 1b divides the installation chamber 3a in which the pump 2 is installed and the non-installation chamber 3b in which the pump 2 is not installed. Further, in the installation chamber 3a, a discharge pipe 4 connected to the pump 2 and a return tube 5 for returning excess fuel not burned in the engine are installed, and a jet is provided in the middle of the return tube 5. The pump 6 is assembled. The liquid guide pipe 7 is attached to the pump 6 in a branched state, and the tip of the liquid guide pipe 7 is attached to the above-mentioned non-installation chamber 3b.
It is located on the inner bottom of the. Thus, when the fuel is returned to the tank 1 via the return tube 5, the fuel in the non-installation chamber 3b is sent to the installation chamber 3a via the liquid guiding pipe 7. Reference numeral 8 denotes a residual liquid amount warning sensor installed in the installation chamber 3a. The residual liquid amount warning sensor 8 is connected to a power source 11 via a warning light 9 and a main switch 10, and is installed in the installation chamber 3a. When the amount of liquid in 3a becomes a certain amount or less, the warning light 9 is turned on by the action of the sensor 8 to inform that the amount of liquid in the installation chamber 3a is low.
また、前記設置室3a及び非設置室3bの双方には、それら
室3a,3b内の液量を検知するためのフロート式液面検出
器12及び13が設備されているが、これらの液面検出器12
及び13は第３図に示すように並列接続されていて、それ
ら液面検出器12,13の合成抵抗により、タンク内液量を
液面計14に指示せしめるようになっている。Further, both the installation chamber 3a and the non-installation chamber 3b are equipped with float type liquid level detectors 12 and 13 for detecting the liquid amount in the chambers 3a and 3b. Detector 12
3 and 13 are connected in parallel as shown in FIG. 3, and the combined resistance of the liquid level detectors 12 and 13 allows the liquid level meter 14 to indicate the liquid level in the tank.
ところがこのような従来の燃料タンクの液面検出装置に
あっては、設置室3aに設けた液面検出器12と非設置室3b
に設けた液面検出器13との合成抵抗によって、液面計14
を動作させ、これによって液量を表示させる構造となっ
ているために、例えば導波管７の目詰り等により、非設
置室3b内の液が設置室3aへ移行されない不具合が生じた
場合には、非設置室3b側の燃料が残り、設置室3a側の燃
料が消費されて、遂にはエンジンへの燃料供給できなく
なっても、液面計14にはタンク内に燃料が残っているよ
うに指示されるために、液面計による指示の信頼性が悪
いという問題点があった。However, in such a conventional fuel tank liquid level detection device, the liquid level detector 12 provided in the installation chamber 3a and the non-installation chamber 3b are provided.
The combined resistance with the liquid level detector 13 installed on the
Is operated and the liquid amount is displayed by this. Therefore, for example, when the waveguide 7 is clogged, the liquid in the non-installation chamber 3b is not transferred to the installation chamber 3a. It seems that even if the fuel in the non-installation chamber 3b remains and the fuel in the installation chamber 3a side is consumed, and the fuel cannot be supplied to the engine at last, the level gauge 14 still has fuel in the tank. However, there is a problem in that the reliability of the level gauge is not reliable.
本考案は、このような従来の問題点に着目してなされた
もので、設置室3a内に設けたセンサ８の動作を利用し
て、非設置室3b側液面検出器13の出力を遮断すると共
に、非設置室3b側液面検出器13のEMPTY時の出力抵抗値
を有する抵抗回路へ切替え接続することにより、従来の
問題点を解消することができる燃料タンクの液面検出装
置を提供することにある。The present invention has been made by paying attention to such a conventional problem, and shuts off the output of the liquid level detector 13 on the non-installation chamber 3b side by using the operation of the sensor 8 provided in the installation chamber 3a. In addition, by switching and connecting to the resistance circuit having the output resistance value of the non-installed chamber 3b side liquid level detector 13 at the time of EMPTY, the liquid level detection device for the fuel tank that can solve the conventional problems is provided. To do.
以下に本考案を第１図に示す実施例に基いて詳細に説明
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 described in detail below based on the embodiment shown in FIG. 1. The same parts as the structure of the present embodiment and the structure described in the conventional example are given the same reference numerals as those used in the conventional example. The description of the same structural parts is omitted.
即ち、本実施例にあっては、センサ８と並列にリレー15
のリレーコイル15aを接続し、さらにそのリレーの可動
接点15bは一方の液面検出器12に、分岐接続し、この可
動接点15bに対応する一方の固定接点15cは、液面検出器
13に、他方の固定接点15dは非設置室の液量がEMPTYの時
の液面検出器13の抵抗値と等しい抵抗値を有する抵抗16
に接続せしめたものである。その他は従来例と変りな
い。That is, in the present embodiment, the relay 15 is arranged in parallel with the sensor 8.
Relay coil 15a is connected, and the movable contact 15b of the relay is branched and connected to one liquid level detector 12, and one fixed contact 15c corresponding to this movable contact 15b is a liquid level detector.
13, the other fixed contact 15d is a resistor 16 having a resistance value equal to the resistance value of the liquid level detector 13 when the amount of liquid in the non-installed chamber is EMPTY.
It is connected to. Others are the same as the conventional example.
従ってこの実施例によれば、例えば導液管７の目詰り等
により非設置室3b内の液が設置室3aへ移行されない不具
合が生じても、設置室3a内の液が消費されれば、センサ
ー８が動作する。このセンサー８の動作、すなわちセン
サー８の抵抗値が低くなるために、リレーコイル15aの
電流が減少し、その結果リレーが消勢されて可動接点15
bは、一方の固定接点15dから他方の固定接点15cに切換
えられ、抵抗16に導通される。従って、液面検出器13が
EMPTYを指していると同様の合成抵抗値となって液面計1
4はEMPTY表示となる。Therefore, according to this embodiment, for example, even if the liquid in the non-installation chamber 3b is not transferred to the installation chamber 3a due to clogging of the liquid guiding tube 7 or the like, if the liquid in the installation chamber 3a is consumed, The sensor 8 operates. Since the operation of the sensor 8, that is, the resistance value of the sensor 8 decreases, the current in the relay coil 15a decreases, and as a result, the relay is deenergized and the movable contact 15
b is switched from one fixed contact 15d to the other fixed contact 15c, and is electrically connected to the resistor 16. Therefore, the liquid level detector 13
A liquid level gauge with the same combined resistance as EMPTY 1
4 is EMPTY display.
このように本考案は、タンク底部に設けられた突部1bに
より、燃料吐出管４が設置された設置室3aと該燃料吐出
管４が設置されていない非設置室3bとに区分された燃料
タンク１に、該非設置室3bの燃料を前記設置室3aに移送
する移送ポンプ６が付設され、更に、前記燃料タンク１
の前記設置室3a及び前記非設置室3bのそれぞれに、互い
に並列接続されて燃料液面位に応じた合成抵抗値信号を
出力する主可変抵抗式液面検出器12及び副可変抵抗式液
面検出器13が設けられ、更に、前記燃料タンク１の前記
設置室3aに、該設置室3a内の燃料液面位が所定以下にな
ったことを検出する残液量警告センサ８が設けられてな
る燃料タンクの液面検出装置において、前記非設置室3b
の燃料残量が空量時における前記副可変抵抗式液面検出
器13の抵抗値と等しい抵抗値を有する固定抵抗16を設け
ると共に、前記残液量警告センサ８からの検出信号に応
じて、前記副可変抵抗式液面検出器13に代えて前記固定
抵抗16を前記主可変抵抗式液面検出器12に並列接続する
切換回路15を設けた燃料タンクの液面検出装置であるか
ら、これによれば、例えば導液管７の目詰り等により非
設置室3b内の液が設置室3aへ移行されない不具合が生じ
ても、設置室3a内の液が消費されれば、センサー８が動
作し、これにより切換回路15が動作し、抵抗16が接続さ
れて、副液面検出器13がEMPTYを指していると同様の合
成抵抗値となるため、液面計はEMPTY表示となって、ガ
ス欠状態を引き起すこともなくなるので、表示の信頼性
と走行の安全性が確保できる効果がある。As described above, according to the present invention, the fuel is divided into the installation chamber 3a in which the fuel discharge pipe 4 is installed and the non-installation chamber 3b in which the fuel discharge pipe 4 is not installed by the protrusion 1b provided at the bottom of the tank. A transfer pump 6 for transferring the fuel in the non-installation chamber 3b to the installation chamber 3a is attached to the tank 1, and further, the fuel tank 1
In each of the installation chamber 3a and the non-installation chamber 3b, a main variable resistance type liquid level detector 12 and a sub variable resistance type liquid level which are connected in parallel to each other and output a combined resistance value signal according to the fuel level. A detector 13 is provided, and further, the installation chamber 3a of the fuel tank 1 is provided with a residual liquid amount warning sensor 8 for detecting that the fuel liquid level in the installation chamber 3a is below a predetermined level. In the liquid level detection device for a fuel tank, the non-installation chamber 3b
A fixed resistor 16 having a resistance value equal to the resistance value of the sub variable resistance type liquid level detector 13 when the remaining fuel amount is empty is provided, and according to the detection signal from the remaining liquid amount warning sensor 8, Since this is a fuel tank liquid level detection device provided with a switching circuit 15 for connecting the fixed resistor 16 in parallel to the main variable resistance type liquid level detector 12 in place of the sub variable resistance type liquid level detector 13, According to the above, even if the liquid in the non-installation chamber 3b is not transferred to the installation chamber 3a due to clogging of the liquid guiding tube 7 or the like, if the liquid in the installation chamber 3a is consumed, the sensor 8 operates. Then, the switching circuit 15 is operated by this, the resistance 16 is connected, and since the combined resistance value is the same as when the auxiliary liquid level detector 13 indicates EMPTY, the liquid level gauge displays EMPTY, The effect of ensuring display reliability and driving safety as it will not cause gas shortage There is.
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
回路図、第２図は従来の燃料タンクの構成概略図、第３
図は従来例の回路図である。 15……リレー回路、16……抵抗FIG. 1 is a circuit diagram showing an embodiment of a liquid level detection device according to the present invention, FIG. 2 is a schematic configuration diagram of a conventional fuel tank, and FIG.
The figure is a circuit diagram of a conventional example. 15 …… Relay circuit, 16 …… Resistance
Claims (1)
り、燃料吐出管（４）が設置された設置室（3a）と該燃
料吐出管（４）が設置されていない非設置室（3b）とに
区分された燃料タンク（１）に、該非設置室（3b）の燃
料を前記設置室（3a）に移送する移送ポンプ（６）が付
設され、更に、前記燃料タンク（１）の前記設置室（3
a）及び前記非設置室（3b）のそれぞれに、互いに並列
接続されて燃料液面位に応じた合成抵抗値信号を出力す
る主可変抵抗式液面検出器（12）及び副可変抵抗式液面
検出器（13）が設けられ、更に、前記燃料タンク（１）
の前記設置室（3a）に、該設置室（3a）内の燃料液面位
が所定以下になったことを検出する残液量警告センサ
（８）が設けられてなる燃料タンクの液面検出装置にお
いて、前記非設置室（3b）の燃料残量が空量時における
前記副可変抵抗式液面検出器（13）の抵抗値と等しい抵
抗値を有する固定抵抗（16）を設けると共に、前記残液
量警告センサ（８）からの検出信号に応じて、前記副可
変抵抗式液面検出器（13）に代えて前記固定抵抗（16）
を前記主可変式液面検出器（12）に並列接続する切換回
路（15）を設けたことを特徴とする燃料タンクの液面検
出装置。1. An installation chamber (3a) provided with a fuel discharge pipe (4) and a non-installed chamber not provided with the fuel discharge pipe (4) by a projection (1b) provided at the bottom of the tank. A transfer pump (6) for transferring the fuel in the non-installation chamber (3b) to the installation chamber (3a) is attached to the fuel tank (1) divided into 3b), and further, the transfer tank (1) of the fuel tank (1) Installation room (3
a) and the non-installed chamber (3b), which are connected in parallel to each other and output a combined resistance value signal corresponding to the fuel liquid level, a main variable resistance type liquid level detector (12) and a sub variable resistance type liquid A surface detector (13) is provided, and the fuel tank (1) is further provided.
Liquid level detection of a fuel tank, wherein the installation chamber (3a) is provided with a residual liquid amount warning sensor (8) for detecting that the fuel liquid level in the installation chamber (3a) is below a predetermined level. In the device, a fixed resistor (16) having a resistance value equal to the resistance value of the sub variable resistance type liquid level detector (13) when the remaining amount of fuel in the non-installed chamber (3b) is empty is provided, and According to the detection signal from the remaining liquid amount warning sensor (8), the fixed resistance (16) is used instead of the sub variable resistance type liquid level detector (13).
A liquid level detecting device for a fuel tank, which is provided with a switching circuit (15) for connecting the main variable type liquid level detector (12) in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989004751U JPH0743617Y2 (en) | 1989-01-19 | 1989-01-19 | Liquid level detector for fuel tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989004751U JPH0743617Y2 (en) | 1989-01-19 | 1989-01-19 | Liquid level detector for fuel tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0295817U JPH0295817U (en) | 1990-07-31 |
| JPH0743617Y2 true JPH0743617Y2 (en) | 1995-10-09 |
Family
ID=31207540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989004751U Expired - Lifetime JPH0743617Y2 (en) | 1989-01-19 | 1989-01-19 | Liquid level detector for fuel tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0743617Y2 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59116826U (en) * | 1983-01-28 | 1984-08-07 | 井関農機株式会社 | fuel display device |
| JPS60195222U (en) * | 1984-06-06 | 1985-12-26 | マツダ株式会社 | automotive fuel tank equipment |
| JP2571571B2 (en) * | 1986-06-23 | 1997-01-16 | 日産自動車株式会社 | Automotive fuel detector |
| JPH041463Y2 (en) * | 1986-11-17 | 1992-01-20 |
-
1989
- 1989-01-19 JP JP1989004751U patent/JPH0743617Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0295817U (en) | 1990-07-31 |
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