JPS58210355A - Fuel strainer - Google Patents
Fuel strainerInfo
- Publication number
- JPS58210355A JPS58210355A JP57092577A JP9257782A JPS58210355A JP S58210355 A JPS58210355 A JP S58210355A JP 57092577 A JP57092577 A JP 57092577A JP 9257782 A JP9257782 A JP 9257782A JP S58210355 A JPS58210355 A JP S58210355A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- passage
- cup
- strainer
- vapor
- 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
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 90
- 238000001914 filtration Methods 0.000 claims description 10
- 238000005192 partition Methods 0.000 claims description 5
- 239000002828 fuel tank Substances 0.000 abstract description 12
- 238000000638 solvent extraction Methods 0.000 abstract 3
- 101100327917 Caenorhabditis elegans chup-1 gene Proteins 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 241001300059 Theba Species 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/20—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines characterised by means for preventing vapour lock
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、汎用エンジンにおいて燃料タンクと気化器と
の間の燃料パイプ途中に配設されて、燃料の供給又は停
止を行うと共に、燃料中の塵埃を分離除去すべく濾過す
る燃料ストレーナに関し、特に燃料バイ１中で発生した
燃料蒸気の気泡が燃料ストレーナに溜まることによるベ
ーパロックを防止づるものに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention is designed to be installed in the middle of a fuel pipe between a fuel tank and a carburetor in a general-purpose engine to supply or stop fuel and to separate and remove dust in the fuel. The present invention relates to a fuel strainer for filtering, and particularly to one that prevents vapor lock caused by fuel vapor bubbles generated in a fuel bin 1 accumulating in the fuel strainer.
従来この種の燃料ストレーナは第１図の（ａ）、（ｂ）
に示りように、ストレーナ本体１に燃料導入通路２がＬ
字形に屈曲して形成され、この通路２の途中の屈曲部に
連通路３を′有するコック４が段Ｇノられて、コック４
の操作により燃料導入通路２を連通又は遮断するように
なっている。また、上記通路２とは別に濾過燃料室５が
形成されており、ストレーナ本体１の下に押えナツト６
により数句りられるカップ７に対し、燃料導入通路２は
直接連通ずるが、濾過燃料室５はこし網８を介しＣ連通
する。そして、燃料導入通路２は燃料パイプ９を介して
高所の燃料タンク１０に連通し、濾過燃料室５からの燃
料導出通路１１が燃料パイプ１２を介して低所の気化器
フ０−ト室１３に連通される。Conventionally, this type of fuel strainer is shown in Fig. 1 (a) and (b).
As shown in FIG.
A cock 4 which is bent into a letter shape and has a communicating passage 3 at a bent part in the middle of the passage 2 is provided with a step G.
The fuel introduction passage 2 is communicated or cut off by the operation. In addition, a filtered fuel chamber 5 is formed separately from the passage 2, and a presser nut 6 is provided below the strainer main body 1.
The fuel introduction passage 2 directly communicates with the cup 7, which is separated by several holes, but the filtration fuel chamber 5 communicates with the cup 7 via a strainer screen 8. The fuel introduction passage 2 communicates with a fuel tank 10 located at a high location via a fuel pipe 9, and the fuel derivation passage 11 from the filtration fuel chamber 5 communicates with a fuel tank 10 located at a low location via a fuel pipe 12. 13.
こうして、エンジン運転時燃料タンク１０から燃料パイ
プ９、燃料導入通路２を介してカップ１に流入する燃料
を、濾過燃料室５との間でこし網８により濾過し、分離
除去された塵埃はカップ１内に溜め、濾過された燃料を
′￥５から燃料導出通路１１、燃料バイブ１２を介して
気化器側に供給するものである。従って、ストレーナに
おける燃料通路系は、燃料導入通路２からカップ７を介
して濾過燃料室５に至りＵ字形に迂回した構造になって
いる。In this way, during engine operation, the fuel flowing into the cup 1 from the fuel tank 10 via the fuel pipe 9 and the fuel introduction passage 2 is filtered by the strainer net 8 between it and the filtration fuel chamber 5, and the separated and removed dust is removed from the cup 1. The filtered fuel is supplied to the carburetor through a fuel outlet passage 11 and a fuel vibrator 12. Therefore, the fuel passage system in the strainer has a U-shaped detour from the fuel introduction passage 2 through the cup 7 to the filtration fuel chamber 5.
このため、特に夏期高温での使用条件において、燃料タ
ンク１０とストレーノ一本体１との間の燃料パイプ９で
発生する蒸気の気泡は高所の燃料タンク１０に抜りるが
、気化器フロー、ト室１３とストレーナ本体１との間の
燃料パイプ１２で発生づる蒸気の気泡はこの糸路で最も
高い濾過燃料室５に溜まって抜番プず、これによりベー
パロックを生じる恐れがある。For this reason, especially under conditions of use at high temperatures in the summer, steam bubbles generated in the fuel pipe 9 between the fuel tank 10 and the strainer main body 1 escape into the fuel tank 10 at a high location, but the vaporizer flow Steam bubbles generated in the fuel pipe 12 between the filter chamber 13 and the strainer body 1 accumulate in the filtered fuel chamber 5, which is the highest in the thread path, and are not released, which may cause vapor lock.
尚、本発明の対象とする燃料ストレーナに関し、従来例
えば特開昭５３−９２０３４号公報の公知技術がある。Regarding the fuel strainer which is the object of the present invention, there is a conventional technique disclosed in, for example, Japanese Unexamined Patent Publication No. 53-92034.
これは、コック操作をすることによりエア抜きを行うも
のであるため、運転中不確定に発生覆る燃料蒸気に対処
づることはぐきない。また、エア抜きの際にはフィルタ
エレメントを紅ないようにバイパスされて濾過を行わな
いので、この状Ｈでの使用はストレーナとしての４１１
能が全くなくなる。従って、公知技術の思想を本発明に
適用することはできない。Since this system bleeds air by operating a cock, it is difficult to deal with fuel vapor that is generated indefinitely during operation. Also, when air is removed, the filter element is bypassed to prevent redness and filtration is not performed, so use in this state H is recommended for use with 411 as a strainer.
No ability is completely lost. Therefore, the idea of known technology cannot be applied to the present invention.
本発明はこのような事情に鑑み、ストレーナとしての燃
料濾過機能を損′うことなく、ストレーナ本体以降の燃
料パイプで不確定に生じる燃料蒸気の気泡を、確実に燃
料タンク側に抜くことを可能にした燃料ストレーナを提
供することを目的とする。In view of these circumstances, the present invention makes it possible to reliably remove the bubbles of fuel vapor that are generated indefinitely in the fuel pipe after the strainer body to the fuel tank side without impairing the fuel filtration function of the strainer. The purpose is to provide a fuel strainer with
この目的のため本発明の燃料ストレーナは、スＩ・レー
ナ本体にＪ５いて燃料導入通路とカップとの間に濾過燃
料室を形成し、この室で燃料は仕切り用の筒でカップに
導いて濾過を行い、且つベーパ通路により濾過燃料室に
溜まる蒸気の気泡は燃料導入通路等を介し燃料タンク側
に抜くようにし／ｊことを特徴とするものである。For this purpose, the fuel strainer of the present invention has a filtered fuel chamber formed between the fuel introduction passage and the cup at J5 in the strainer main body, and in this chamber, fuel is guided to the cup by a partition cylinder and filtered. In addition, vapor bubbles accumulated in the filtration fuel chamber by the vapor passage are discharged to the fuel tank side via the fuel introduction passage or the like.
以下、図面を参照して本発明の実施例を具体的に説明づ
る。まず第２図の実施例について説明すると、ストレー
ナ本体１においてコック４の連通路３との燃料導入通路
２′が短いものにされ、この通路２′の下部のカップ１
との間に大きい濾過燃料室５′が形成され、室５′内に
おいて通路２とカップ１との間に所定の隙間のベーパ通
路１４を有して仕切り用向１５が設置される。ここで筒
１５は下端のフランジ部５ａをこし網８と共に押えナツ
トとで固定して立設りることが好ましく、このためフラ
ンジ部１５ａに燃料通過用の孔１Ｇが穿設される。また
、室５′の頂部には山形のテーパ１１が施されて、蒸気
の気泡をベーパ通、路１４に円滑に導くようにしである
。Embodiments of the present invention will be specifically described below with reference to the drawings. First, the embodiment shown in FIG. 2 will be described. In the strainer body 1, the fuel introduction passage 2' connecting to the communication passage 3 of the cock 4 is made short, and the cup 1 at the bottom of this passage 2' is made short.
A large filtered fuel chamber 5' is formed between the chamber 5' and a vapor passage 14 with a predetermined gap between the passage 2 and the cup 1, and a partition 15 is installed therein. Here, it is preferable that the cylinder 15 is erected by fixing the flange portion 5a at the lower end thereof together with the strainer net 8 with a presser nut, and for this purpose, the flange portion 15a is provided with a hole 1G for passage of fuel. Further, a chevron-shaped taper 11 is provided at the top of the chamber 5' to smoothly guide vapor bubbles into the vapor passageway 14.
なお、筒１５の上端面とデーパ１７との隙間は塵芥等が
通過し得ない程度の微少な隙間にして、燃料の流れは通
路２′から大部分カップ側へ流れるようにする。Incidentally, the gap between the upper end surface of the cylinder 15 and the taper 17 is made so small that dust and the like cannot pass therethrough, so that most of the fuel flows from the passage 2' to the cup side.
このように構成されることから、エンジン運転時に燃料
導入通路２′から燃料が仕切り用の筒１５により案内さ
れてカップ７に流入し、このカップ１と濾過燃料室５′
との間で従来と同様にこし網８により濾過される。一方
、燃料パイプ１２で発生４る燃料蒸気の気泡は、濾過燃
料室５′の頂部に溜った後そこのテーパ１７で中心部に
誘導され、ベーパ通路１４から燃料導入通路２′に入っ
て燃料タンク側に順次＃ｉ４ノる。With this configuration, during engine operation, fuel is guided from the fuel introduction passage 2' by the partition tube 15 and flows into the cup 7, and the fuel flows between the cup 1 and the filtered fuel chamber 5'.
The water is filtered through a strainer screen 8 in the same way as in the past. On the other hand, the fuel vapor bubbles generated in the fuel pipe 12 accumulate at the top of the filtered fuel chamber 5', are guided to the center by the taper 17 there, enter the fuel introduction passage 2' from the vapor passage 14, and are filled with fuel. Step #i4 on the tank side.
５−
尚、本発明は上記実施例のみに限定されるものではなく
、第３図のように筒１５の内部において通路２′とカッ
プ７の間に筒状に形成したこし網８を設けても良い。ま
た、第４図のように、」ツク４から燃料タンク側へ更に
垂直な燃料導入通路１８を付設すると、燃料パイプ９の
傾き等に影響されることなく気泡の抜けが非常に良くな
る。5- It should be noted that the present invention is not limited to the above-mentioned embodiment, but as shown in FIG. Also good. Further, as shown in FIG. 4, if a vertical fuel introduction passage 18 is provided from the pipe 4 to the fuel tank side, air bubbles can be removed very easily without being affected by the inclination of the fuel pipe 9.
以上の説明から明らかなように本発明によると、ストレ
ーナ本体１に１５いて燃料通路系は従来と同様−にＵ字
形に迂回したもので、燃料の濾過が充分に行われストレ
ーナとしての機能を発揮し得る。As is clear from the above description, according to the present invention, the fuel passage system in the strainer main body 1 is detoured in a U-shape as in the conventional case, and the fuel is sufficiently filtered and functions as a strainer. It is possible.
またこのような状態において、濾過燃料室５′の頂部が
山形のテーパ１７、ベーパ通路１４を介して燃料導入通
路２′に上白きで常に連通り°ることで、燃料蒸気の気
泡が任意に燃料タンク側に抜け、ベーパロックを完全に
防止できる。In addition, in such a state, the top of the filtered fuel chamber 5' is always in continuous communication with the fuel introduction passage 2' via the chevron-shaped taper 17 and the vapor passage 14, so that bubbles of fuel vapor can be freely generated. It escapes to the fuel tank side and completely prevents vapor lock.
第１図（ａ）、（ｂ）は従来の燃料ストレーナを示す断
面図、第２図は本発明による燃料ストレーナの実施例を
示Ｊ断面図、第３図と第４図は本発明の他＝６−
の実施例を示づ断面図である。
１・・・ス］〜レ−す本体、２．２’、１８・・・燃料
導入通路、３・・・連通路、４・・・」ツタ、５．５′
・・・線通燃料室、６・・・押えナツト、７・・・カッ
プ、８．８′・・・こし網、９．１２・・・燃料バイブ
、１０・・・燃料タンク、１１・・・燃料導出通路、１
３・・・フロート室、１４・・・ベーパ通路、１５・・
・仕切り用の筒、１５ａ・・・フランジ部、１６・・・
孔、１７・・・テーバ。
特許出願人 富士重工業株式会社代理人弁理士
小 橋 信 浮
量 弁理士 亭］ すＩ 進７−Figures 1 (a) and (b) are sectional views showing a conventional fuel strainer, Figure 2 is a J sectional view showing an embodiment of a fuel strainer according to the present invention, and Figures 3 and 4 are sectional views showing a conventional fuel strainer. It is a sectional view showing an example of =6-. 1... space] ~ race body, 2.2', 18... fuel introduction passage, 3... communication passage, 4...'' ivy, 5.5'
... Line fuel chamber, 6... Holder nut, 7... Cup, 8.8'... Strain net, 9.12... Fuel vibrator, 10... Fuel tank, 11...・Fuel outlet passage, 1
3... Float chamber, 14... Vapor passage, 15...
・Partition tube, 15a...flange part, 16...
Hole, 17... Theba. Patent applicant Fuji Heavy Industries Co., Ltd. Representative Patent Attorney
Makoto Kobashi, Patent Attorney Tei] Su I Shin 7-
Claims (1)
の間に濾過燃料室を形成し、該室内で上記燃料導入通路
とカップとの間に仕切り用の筒を設置して燃料を迂回づ
ることにより濾過を可能にし、上記燃料導入通路と筒と
の間に燃１３１蒸気の気泡を扱くためのベーパ通路を設
置ノたことを特徴とづる燃料ストレーナ。By forming a filtration fuel chamber between the fuel introduction passage from the hole of the strainer body and the cup, and installing a partition cylinder between the fuel introduction passage and the cup in the chamber, the fuel is bypassed. A fuel strainer characterized in that a vapor passage is installed between the fuel introduction passage and the cylinder to handle bubbles of fuel vapor, enabling filtration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57092577A JPS58210355A (en) | 1982-05-31 | 1982-05-31 | Fuel strainer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57092577A JPS58210355A (en) | 1982-05-31 | 1982-05-31 | Fuel strainer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58210355A true JPS58210355A (en) | 1983-12-07 |
Family
ID=14058281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57092577A Pending JPS58210355A (en) | 1982-05-31 | 1982-05-31 | Fuel strainer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58210355A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5355860A (en) * | 1992-07-09 | 1994-10-18 | Ekstam Charles L | Fuel delivery system for diesel engines |
| WO1998010178A3 (en) * | 1996-08-22 | 1998-07-02 | Gonzalez Jose M | Fuel/vapor separator apparatus for diesel engines |
| US6729310B2 (en) | 2001-02-20 | 2004-05-04 | Charles L. Ekstam | Fuel delivery system |
| US6892710B2 (en) | 2003-02-21 | 2005-05-17 | Charles Bradley Ekstam | Fuel/air separation system |
-
1982
- 1982-05-31 JP JP57092577A patent/JPS58210355A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5355860A (en) * | 1992-07-09 | 1994-10-18 | Ekstam Charles L | Fuel delivery system for diesel engines |
| WO1998010178A3 (en) * | 1996-08-22 | 1998-07-02 | Gonzalez Jose M | Fuel/vapor separator apparatus for diesel engines |
| US6729310B2 (en) | 2001-02-20 | 2004-05-04 | Charles L. Ekstam | Fuel delivery system |
| US6892710B2 (en) | 2003-02-21 | 2005-05-17 | Charles Bradley Ekstam | Fuel/air separation system |
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