JPS603438A - Fuel supply system - Google Patents
Fuel supply systemInfo
- Publication number
- JPS603438A JPS603438A JP11079483A JP11079483A JPS603438A JP S603438 A JPS603438 A JP S603438A JP 11079483 A JP11079483 A JP 11079483A JP 11079483 A JP11079483 A JP 11079483A JP S603438 A JPS603438 A JP S603438A
- Authority
- JP
- Japan
- Prior art keywords
- throttle valve
- coil spring
- fuel supply
- spring
- coated
- 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
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
- F02M19/00—Details, component parts, or accessories of carburettors, not provided for in, or of interest apart from, the apparatus of groups F02M1/00 - F02M17/00
- F02M19/12—External control gear, e.g. having dash-pots
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Springs (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は自動車の燃料供給装置(気化器)に係シ、特に
、絞シ弁を復帰させるコイルスプリングを有する燃料供
給装置の改良に関するものである。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a fuel supply system (carburetor) for an automobile, and particularly relates to an improvement of a fuel supply system having a coil spring for returning a throttle valve. .
第1図は例えば、許開昭54−99832号公報に見、
られ)ような自動車エンジン用燃料供給装置の垂直断面
図である。燃料供給装置の本体1の吸気、筒・6内には
上からチョーク軸3に取シ付けられたチョーク弁2とノ
ズル5を突出開口させたベンチュリ4及び絞シ弁軸8に
取シ付けられた絞り弁7が設置されている。また、絞シ
弁軸80本体1外の部分に取シ付けたストッパレバー9
を固定しているカラー103とスロットルレバー12を
固定しているカラー10bとの間には本発明の対象であ
るコイルスプリング11を介在させている。Figure 1 can be seen, for example, in Japanese Patent Publication No. 54-99832.
FIG. Inside the intake cylinder 6 of the main body 1 of the fuel supply device, there is a choke valve 2 attached to a choke shaft 3 from above, a venturi 4 with a nozzle 5 protruding from the opening, and a throttle valve attached to the valve shaft 8. A throttle valve 7 is installed. In addition, the stopper lever 9 attached to the outside part of the throttle valve shaft 80 main body 1
A coil spring 11, which is the object of the present invention, is interposed between the collar 103 that fixes the throttle lever 12 and the collar 10b that fixes the throttle lever 12.
このコイルスプリング11の右端は本体1に植立したス
トッパビン13に巻回し、その他端はスロットルレバー
12に係止され、絞シ弁軸8に絞シ弁7の開度を閉じる
方向の弱い力を作用させている。このときの絞シ弁7の
最小(アイドリンク)開度はストッパレバー9の先端が
本体1に固定したストッパ14に接触することによって
定まる。The right end of this coil spring 11 is wound around a stopper bin 13 installed on the main body 1, and the other end is locked to the throttle lever 12, which applies a weak force to the throttle valve shaft 8 in the direction of closing the opening of the throttle valve 7. It is working. The minimum (idle link) opening degree of the throttle valve 7 at this time is determined by the tip of the stopper lever 9 coming into contact with the stopper 14 fixed to the main body 1.
即ち、この燃料供給装置では上記コイルスプリング11
をねじシばねとして使用し、絞シ弁7の開度を大きくし
た場合は復元力で復帰させている。That is, in this fuel supply device, the coil spring 11
is used as a screw spring, and when the opening degree of the throttle valve 7 is increased, the restoring force is used to return the throttle valve 7 to its original position.
なお、スロットルレバー12は中間接続具を介してペダ
ルに連結されている。Note that the throttle lever 12 is connected to a pedal via an intermediate connector.
このように構成した燃料供給装置は、上記コイルスプリ
ング11を使用することによシ絞シ弁7の復元力の発生
手段を小形にまとめることができるが、このねじシばね
を取り付けるスペースが狭く線間の隙間が僅小である。In the fuel supply device configured in this way, the means for generating the restoring force of the throttle valve 7 can be made compact by using the coil spring 11, but the space for installing this screw spring is narrow and the line The gap between them is very small.
まだ、運転時にはねじられるので更にその隙間が縮小し
、線と線が接触干渉して摩耗し易い状態となっている。However, since the wires are twisted during operation, the gap is further reduced, and the wires come into contact with each other and are susceptible to wear.
したがって、長期間使用すると線が摩耗してばね特性が
変化したり、摩擦が生じて引っかかシ、動作の再現性が
保られず絞り弁開度の制御が不正確になるという恐れが
あった。また、このように動作の不円滑なことは運転者
にも伝わって不快感を与えるし、更に摩耗部に錆が発生
すると上記の傾向は倍増される等の欠点をもっていた。Therefore, when used for a long period of time, there is a fear that the wires will wear out and the spring characteristics will change, friction will occur and the valve will get stuck, and the reproducibility of the operation will not be maintained and the control of the opening of the throttle valve will become inaccurate. Further, such unsmooth operation is transmitted to the driver and gives a feeling of discomfort, and furthermore, if rust occurs in the worn parts, the above-mentioned tendency is doubled.
本発明は上記従来技術の欠点を解消し、ねじシばねであ
るコイルスプリングに簡単な処理を加えることによって
、円滑に作動して長期間ばね特性が変化することのない
燃料供給装置を提供することを目的とする。The present invention solves the above-mentioned drawbacks of the prior art and provides a fuel supply device that operates smoothly and whose spring characteristics do not change over a long period of time by adding simple processing to a coil spring that is a threaded spring. With the goal.
本発明の特徴とするところは、コイルスプリングの表面
を耐摩耗性の減摩 で被覆して形成したことにある。A feature of the present invention is that the surface of the coil spring is coated with a wear-resistant anti-friction coating.
第2図、第3図は本発明の減摩性で表面を被覆したコイ
ルスプリングの斜視図であり、第4図はコイルスプリン
グの拡大断面図である。第2図においては右端の巻回部
は第1図のストッパピン13に巻回させる部分で、左端
の鍵形に曲げた部分はスロットルレバー12に係止され
る部分である。甘た、第3図は比較的小形の燃料供給装
置に用いられるコイルスプリング11の場合である。2 and 3 are perspective views of a coil spring whose surface is coated with anti-friction properties of the present invention, and FIG. 4 is an enlarged sectional view of the coil spring. In FIG. 2, the winding portion at the right end is a portion to be wound around the stopper pin 13 of FIG. Please note that FIG. 3 shows the case of a coil spring 11 used in a relatively small fuel supply device.
これらのコイルスプリング11を形成するばね鋼線16
は減摩 15で被覆されている。Spring steel wire 16 forming these coil springs 11
is coated with Antifriction 15.
従来線材にナイロン等をコーティングした例はあるが、
これは常に外気や雨に暴露されている場合の防錆効果を
狙った場合である。しかし本実施例の場合は四フッ化エ
チレン樹脂(米国デュポン社の商品名)を噴霧状にして
吹き付け、3〜100μの厚さにコーティングする。こ
のコイルスプリング11は第2図のように巻回しである
がその隙間から侵入して全周に密に付着させることがで
きる。なお、このコイルスプリング11を引っ張って僅
かに伸張させた状態とすれば、均一なコーティングを更
に容易に行うことができるし、その線間の隙間は1m位
あれば充分可能である。There are examples of conventional wire rods being coated with nylon, etc.
This is for the purpose of preventing rust when constantly exposed to outside air or rain. However, in the case of this embodiment, tetrafluoroethylene resin (trade name of DuPont, USA) is sprayed and coated to a thickness of 3 to 100 μm. Although this coil spring 11 is wound as shown in FIG. 2, it can enter through the gap and be tightly attached to the entire circumference. Note that if the coil spring 11 is pulled and slightly expanded, uniform coating can be more easily achieved, and a gap between the lines of about 1 m is sufficient.
上記のナイロン樹脂の線材への被覆は一般に浸漬(ディ
ッピング)法によっているので均一な薄層を被覆させる
ことは困難であり、熱変化に対して弱い。したがって、
自動車のように一4Orの低温から+150Cの高温迄
の範囲を対象とするものにはナイロン樹脂系材料は不適
当である。即ち高温になると軟化して流動し反って線間
の摩擦を増加させる恐れがあるからである。Since the above-mentioned nylon resin is generally coated on the wire by a dipping method, it is difficult to coat the wire with a uniform thin layer and it is susceptible to thermal changes. therefore,
Nylon resin materials are unsuitable for applications such as automobiles, which operate at temperatures ranging from a low temperature of -4 Orr to a high temperature of +150 C. That is, when the temperature reaches high temperatures, there is a risk that the wire will soften, flow, and warp, increasing the friction between the wires.
第5図は従来の素材のままのコイルスプリングを用いた
場合の絞シ弁開度と絞シ弁軸のトルクとの関係を示す線
図である。実線Aは使用初期の動作で、細かい破線Bは
長期間使用後の動作を示している。即ち、使用初期は円
滑に変化しているが、長期間使用すると絞り弁7の開き
方向と閉じ方向のトルクの差が大きくなると共に不円滑
な変化となυ、この感じは運転者に不快感を与え、スプ
リングの切換の心配も生じていた。FIG. 5 is a diagram showing the relationship between the opening degree of the throttle valve and the torque of the throttle valve shaft when a coil spring made of a conventional material is used. The solid line A shows the operation at the initial stage of use, and the fine broken line B shows the operation after long-term use. In other words, the change is smooth at the beginning of use, but after long-term use, the difference between the torque in the opening direction and the closing direction of the throttle valve 7 increases and the change becomes unsmooth υ, and this feeling causes discomfort to the driver. There was also concern about spring switching.
上記の如くコイルスプリング11の設置場所は狭くスプ
リング荷重を犬きく口て運転者がアクセル動作を止めて
足をペダルから離した時は円滑に絞シ弁7がアイドル開
度に戻るようにしている。As mentioned above, the installation location of the coil spring 11 is narrow and the spring load is carefully controlled so that when the driver stops accelerator operation and takes his/her foot off the pedal, the throttle valve 7 smoothly returns to the idle opening position. .
また、上記の如くスプリング荷重を大きくすることは材
料の許容応力範囲を越えないように太い線を用いる必要
が生じていだので、線と線の間隙は縮小して車の振動等
で接触し易くなっていた。In addition, increasing the spring load as described above necessitates the use of thicker wires to avoid exceeding the allowable stress range of the material, which reduces the gap between the wires and makes it easier for them to come into contact with each other due to car vibrations, etc. It had become.
第6図は第4図のような減摩材処理を施しだコイルスプ
リングの特性線図で、第5図の場合と同じく実線Aは使
用初期、破線Bは相蟲長期間実用した後の特性である。Figure 6 is a characteristic diagram of a coil spring treated with anti-friction material as shown in Figure 4. As in Figure 5, the solid line A is the initial use, and the broken line B is the characteristic after long-term use. It is.
この場合は特性に殆んど差を生じておらず長期間好適な
作動を示すことを示している。In this case, there is almost no difference in characteristics, indicating that suitable operation can be achieved for a long period of time.
本実施例の絞シ弁制御用のコイルスプリングは、巻回整
形後に四フッ化エチレン系樹脂の噴霧で表面を被覆させ
ることによって、振動によυ線間の接触が生じても摩耗
による特性の変化を生じないで長期間好適に作動すると
いう効果をもっている。The coil spring for controlling the throttle valve of this example has its surface coated with a spray of polytetrafluoroethylene resin after winding and shaping, so that even if contact between the υ wires occurs due to vibration, the characteristics due to wear will not be affected. It has the effect of operating suitably for a long period of time without any change.
上記実施例は樹脂被覆によって特性を長期間保持させた
ものであるが、次のような試みも行って実験して見た。In the above example, the properties were maintained for a long period of time by resin coating, but the following experiments were also carried out.
即ち、従来から防錆処理として知られている金属亜鉛と
クローム酸を主成分とする水溶液と、グリコールの水溶
液を線の表面に塗布して高温炉で焼きイ」けるという処
理方法であるが、これは防錆効果は有るがスプリングに
適用すると表面が粗くなって運転者の不円滑感は増加す
るので好ましい結果は得られなかった。In other words, this is a conventionally known anti-corrosion treatment method in which an aqueous solution containing metallic zinc and chromic acid as main components and an aqueous solution of glycol are applied to the surface of the wire and then baked in a high-temperature furnace. This has a rust-preventing effect, but when applied to springs, the surface becomes rough and the driver feels an increased sense of unsmoothness, so no desirable results were obtained.
本発明の燃料供給装置の絞り弁制御用コイルスプリング
は、成形後口フッ化エチレン処理を施すという簡単な加
工を加えることによって、特性を大巾に向上させること
ができるという効果が得られる。The coil spring for controlling the throttle valve of the fuel supply device of the present invention has the effect that its characteristics can be greatly improved by adding a simple process of performing fluoroethylene treatment after molding.
第1図は自動車エンジン用燃料供給装置の垂直断面図、
第2図と第3図は本発明の減摩おで表面を被覆したコイ
ルスプリングの斜視図、第4図はコイルスプリングの拡
大断面図、第5図は従来の素材のままのコイルスプリン
グを用いたときの絞シ弁開度と絞シ弁軸のトルクとの関
係を示す線図、第6図は第4図のような処理ずみコイル
スプリングの特性線図である。
1・・・本体、6・・・吸気筒、7・・・絞り弁、8・
・・絞り弁軸、9・・・ストッパレバー、10・・・カ
ラー、11・・・コイルスフリング、12・・・スロッ
トルレバー、13・・・ストッパピン、14・・・スト
ッパ、1−5・・・減箔5図
宅6図Figure 1 is a vertical sectional view of a fuel supply system for an automobile engine.
Figures 2 and 3 are perspective views of a coil spring coated with the anti-friction surface of the present invention, Figure 4 is an enlarged cross-sectional view of the coil spring, and Figure 5 is a coil spring using a conventional material. FIG. 6 is a characteristic diagram of the treated coil spring as shown in FIG. 4. 1... Main body, 6... Intake cylinder, 7... Throttle valve, 8...
... Throttle valve shaft, 9... Stopper lever, 10... Collar, 11... Coil spring, 12... Throttle lever, 13... Stopper pin, 14... Stopper, 1-5・・・Reduced foil drawing 5 drawing house drawing 6 drawing
Claims (1)
を絞シ弁軸の本体外の部分に巻回設置した燃料供給装置
において、上記コイルスプリングの表面を耐摩耗性の減
摩4Xで被覆してなることを特徴とする燃料供給装置。 2、上記減摩Uが、四フッ化エチレン樹脂である特許請
求の範囲第1項記載の燃料供給装置。[Claims] In a fuel supply device in which a coil spring for restoring the state of a throttle valve is wound around a part of the throttle valve shaft outside the main body, the surface of the coil spring is coated with a wear-resistant material. A fuel supply device characterized by being coated with anti-friction 4X. 2. The fuel supply device according to claim 1, wherein the anti-friction U is a tetrafluoroethylene resin.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11079483A JPS603438A (en) | 1983-06-22 | 1983-06-22 | Fuel supply system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11079483A JPS603438A (en) | 1983-06-22 | 1983-06-22 | Fuel supply system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS603438A true JPS603438A (en) | 1985-01-09 |
Family
ID=14544800
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11079483A Pending JPS603438A (en) | 1983-06-22 | 1983-06-22 | Fuel supply system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS603438A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01102327A (en) * | 1987-10-16 | 1989-04-20 | Mitsubishi Kasei Corp | Measuring method of temperature of coke discharged from oven |
JP2008075594A (en) * | 2006-09-22 | 2008-04-03 | Starting Ind Co Ltd | Recoil starter |
EP3187747A4 (en) * | 2014-08-28 | 2018-05-02 | NHK Spring Co., Ltd. | Suspension member for vehicles |
-
1983
- 1983-06-22 JP JP11079483A patent/JPS603438A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01102327A (en) * | 1987-10-16 | 1989-04-20 | Mitsubishi Kasei Corp | Measuring method of temperature of coke discharged from oven |
JP2008075594A (en) * | 2006-09-22 | 2008-04-03 | Starting Ind Co Ltd | Recoil starter |
JP4584220B2 (en) * | 2006-09-22 | 2010-11-17 | スターテング工業株式会社 | Recoil starter |
EP3187747A4 (en) * | 2014-08-28 | 2018-05-02 | NHK Spring Co., Ltd. | Suspension member for vehicles |
US10625554B2 (en) | 2014-08-28 | 2020-04-21 | Nhk Spring Co., Ltd. | Vehicle suspension member |
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