JPS5929754A - Carburetor for internal combustion engine - Google Patents
Carburetor for internal combustion engineInfo
- Publication number
- JPS5929754A JPS5929754A JP13979082A JP13979082A JPS5929754A JP S5929754 A JPS5929754 A JP S5929754A JP 13979082 A JP13979082 A JP 13979082A JP 13979082 A JP13979082 A JP 13979082A JP S5929754 A JPS5929754 A JP S5929754A
- Authority
- JP
- Japan
- Prior art keywords
- carburetor
- heat
- vaporizer
- conductive member
- insulator
- 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
- F02M17/00—Carburettors having pertinent characteristics not provided for in, or of interest apart from, the apparatus of preceding main groups F02M1/00 - F02M15/00
- F02M17/40—Selection of particular materials for carburettors, e.g. sheet metal, plastic, or translucent materials
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Means For Warming Up And Starting Carburetors (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、内燃機関のだめの気化器に関し、特に、気化
器本体が合成樹脂材料から成る気化器に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a carburetor for an internal combustion engine, and more particularly to a carburetor whose main body is made of a synthetic resin material.
内燃機関に、その運転のための混合気を供給しかつこの
混合気供給量を制御する気化器は、運転によって高温源
となる前記機関との当接を防止すべく、筒状の熱インシ
ュレータを介して前記機関に接続されている。The carburetor, which supplies the internal combustion engine with the air-fuel mixture for its operation and controls the amount of this air-fuel mixture supplied, is equipped with a cylindrical heat insulator to prevent contact with the engine, which becomes a high temperature source during operation. connected to said institution via.
気化器は、前記機関の給気口に連通ずる吸気孔が形成さ
れた気化器本体を備え、該気化器本体は一般に一合金材
料から成る。この合金材料から成る気化器本体は、前記
熱インシュレータによって前記機関との接触を妨げられ
、まだ当該気化器本体に設けられた燃料供給機構の燃料
ポートから前記吸気孔に吸引される燃料の気化熱によっ
て冷却さレルこトカラ、ベーパロックやパーコレーショ
ンを生じる程に高温となることはない。The carburetor includes a carburetor body formed with an intake hole that communicates with the air intake of the engine, and the carburetor body is generally made of an alloy material. The carburetor body made of this alloy material is prevented from contacting the engine by the heat insulator, and the vaporization heat of the fuel is still drawn into the intake hole from the fuel port of the fuel supply mechanism provided in the carburetor body. When cooled, it does not reach temperatures high enough to cause vapor lock or percolation.
ところで、最近、前記気化器本体を合成樹脂材料で形成
することが試みられている。この合成樹脂材料から成る
気化器本体を備える気化器は、合金材料から成る気化器
本体を備えるものに比較して軽量化を図ることができる
こと、また腐食を生じないこと、ガソリンとアルコール
との混合燃料であるガソホール燃料の使用が可となるこ
と等、合金材料から成る気化器本体を備える気化器では
得られない利点をもつ。Incidentally, recently, attempts have been made to form the vaporizer main body from a synthetic resin material. A carburetor with a carburetor body made of a synthetic resin material can be lighter in weight than a carburetor body made of an alloy material, will not cause corrosion, and can be mixed with gasoline and alcohol. It has advantages that cannot be obtained with a carburetor having a carburetor body made of an alloy material, such as being able to use gasohol fuel.
しかし、前記した利点の反面、合成樹脂材料は合金材料
よりも熱伝導度が極めて小さいことから、合成樹脂材料
から成る気化器本体は前記した燃料の気化熱によって効
果的な冷却を受けることはない。このため、合成樹脂材
料から成る気化器本体を備える従来の前記気化器では、
高い外気温下で前記機関を高負荷運転した場合に気化器
本体がベーバロックヤパーコレーンヨンを生じる程の高
温となシ、その結果、前記機関の不調を招くという欠点
があった。However, despite the above-mentioned advantages, synthetic resin materials have much lower thermal conductivity than alloy materials, so the carburetor body made of synthetic resin material is not effectively cooled by the heat of vaporization of the fuel mentioned above. . For this reason, in the conventional vaporizer including a vaporizer body made of a synthetic resin material,
When the engine is operated under high load at high outside temperatures, the temperature of the carburetor body is high enough to cause a vapor lock jam, resulting in malfunction of the engine.
従って、本発明の目的は、合成樹脂材料から成る気化器
本体を備える気化器の前記した利点を損なうことなく前
記機関の運転を良好に制御し得る気化器を提供すること
にある。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a carburetor that can satisfactorily control the operation of the engine without impairing the above-described advantages of a carburetor having a carburetor body made of a synthetic resin material.
本発明は、基本的には、熱伝導度の小さい合成樹脂材料
から成シかつ熱インシュレータを介して内燃機関に接続
される気化器本体および前記熱インシュレータと、気化
熱を生じる燃料との間の熱交換を促進すべく、前記気化
器本体および熱インシュレータにより規定される前記燃
料のだめの吸気通路に関連して、前記合成樹脂材料の熱
伝導度よシも大きな値の熱伝導度を有する熱伝導部材を
設けたことを特徴とする。The present invention basically consists of a carburetor body made of a synthetic resin material with low thermal conductivity and connected to an internal combustion engine via a thermal insulator, and a connection between the thermal insulator and the fuel that generates heat of vaporization. In order to promote heat exchange, in connection with the intake passage of the fuel reservoir defined by the carburetor body and the thermal insulator, a thermal conductor having a thermal conductivity of a larger value than the thermal conductivity of the synthetic resin material; It is characterized by the provision of a member.
本発明によれば、前記熱伝導部材は前記熱インシュレー
タおよび気化器本体に接しかつ一部を前記吸気通路の壁
面に露出することから、前記熱伝導部材が前記熱インシ
ュレータおよび気化器本体と、前記吸気通路を経る燃料
との間の熱交換を促進し、これによシ前記熱インシュレ
ータおよび気化器本体が前記燃料の気化熱によって効果
的に冷却され、従って前記機関の高負荷運転時において
もベーパロックやパーコレーションを生じる程ニ前記気
化器本体が高温となることはない。According to the present invention, the heat conductive member is in contact with the heat insulator and the carburetor main body, and a portion thereof is exposed on the wall surface of the intake passage. It promotes heat exchange with the fuel passing through the intake passage, whereby the heat insulator and the carburetor body are effectively cooled by the heat of vaporization of the fuel, thus preventing vapor lock even during high load operation of the engine. The temperature of the vaporizer body never becomes high enough to cause percolation.
さらに、本発明によれば、前記熱伝導部材によって前記
吸気通路の壁面の一部を規定し、該壁面部分にアイドリ
ンク燃料ポートを設けることにょシ、高湿度、低外気温
時の低負荷運転時に燃料の気化熱によって氷結を生じや
すい前記アイドリングポート近傍を加熱することができ
、これにょシ氷結による前記機関の運転の不調を防止で
きる。Further, according to the present invention, a part of the wall surface of the intake passage is defined by the heat conductive member, and an idle link fuel port is provided in the wall surface part, so that low load operation at high humidity and low outside temperature is possible. It is possible to heat the vicinity of the idling port where icing is likely to occur due to the heat of vaporization of the fuel, thereby preventing operational malfunctions of the engine due to icing.
本発明が特徴とするところは、図示の実施例についての
以下の説明によシ、さらに明らかとなろう。The features of the invention will become clearer from the following description of the illustrated embodiment.
本発明に係る気化器ｌＯは、第１図に示されているよう
に、吸気孔１２が形成された気化器本体１４を含み、吸
気孔１２内にはその実効口径を可変とするだめの従来よ
く知られたスロットル弁１６が設けられている。As shown in FIG. 1, the carburetor IO according to the present invention includes a carburetor main body 14 in which an intake hole 12 is formed. A well known throttle valve 16 is provided.
気化器本体１４は、合成樹脂材料から成る従来よく知ら
れた筒状の熱インシュレータ１８を介して内燃機関２０
に接続されている。気化器本体１４に形成された吸気孔
１２は、その一端で熱イン７ュレータ１８により規定さ
れる通路２２に一致し、これによシ吸気孔１２は前記通
路２２を経て前記機関２０の給気口２４に連通する。従
って、吸気孔１２は通路２２と共同して後述する燃料の
だめの吸気通路を構成する。吸気孔１２の他端は、図示
しないが従来よく知られたエアクリーナを経て大気に連
通ずる。The carburetor body 14 is connected to an internal combustion engine 20 via a conventionally well-known cylindrical heat insulator 18 made of a synthetic resin material.
It is connected to the. The intake hole 12 formed in the carburetor body 14 corresponds at one end to a passage 22 defined by the thermal insulator 18, so that the intake hole 12 is connected to the supply air of the engine 20 through said passage 22. It communicates with the port 24 . Therefore, the intake hole 12 and the passage 22 constitute an intake passage for a fuel reservoir, which will be described later. The other end of the intake hole 12 communicates with the atmosphere through a conventionally well-known air cleaner, although not shown.
気化器本体１４は硬質プラスチックのような従来よく知
られた合成樹脂材料から成る。気化器本体１４には、従
来の前記気化器におけると同様な主燃料供給路２６およ
びアイドリンク燃料供給路２８を備える従来よく知られ
た燃料供給機構が組み込まれている。主燃料供給路２６
は、従来よく知られているように、前記吸気孔１２の減
径部であるベンチュリ部３０において、前記吸気孔１２
の壁面に開放する主燃料ボート３１に帰する。まだ、ア
イドリンク燃料供給路２８は、従来よく知られているよ
うに、吸気孔１２の壁面におけるアイドリング開度位置
にあるスロットル弁１６の縁部に対応する部分で前記壁
面に開放するアイドリンク燃料ボート３２に帰する。The carburetor body 14 is comprised of conventionally well known synthetic resin materials such as hard plastics. The carburetor body 14 incorporates a well-known fuel supply mechanism including a main fuel supply passage 26 and an idle link fuel supply passage 28 similar to those in the conventional carburetor. Main fuel supply path 26
As is conventionally well known, in the venturi portion 30 which is the reduced diameter portion of the intake hole 12, the intake hole 12
The main fuel boat 31 opens onto the wall of the main fuel boat 31. As is well known in the art, the idle link fuel supply path 28 supplies idle link fuel to the wall surface of the intake hole 12 at a portion corresponding to the edge of the throttle valve 16 at the idling opening position. Return to boat 32.
従って、前記機関２０の運転状態では、従来よく知られ
ているように、該機関の運転を制御すべく操作されるス
ロットル弁１６の開度に応じて、前記エアクリーナから
前記吸気通路を経て前記機関２０に吸入される空気と共
に、前記燃料ボート３１．３２から前記吸気通路に吸引
された燃料が混合気として機関２０に供給される。Therefore, in the operating state of the engine 20, as is well known in the art, depending on the opening degree of the throttle valve 16 that is operated to control the operation of the engine, air is transmitted from the air cleaner to the engine through the intake passage. Together with the air taken into the engine 20, the fuel drawn into the intake passage from the fuel boat 31, 32 is supplied to the engine 20 as a mixture.
前記燃料ポート３１．３２から前記吸気通路に吸引され
、該吸気通路を経て前記機関２０の給気口２４へ向けて
流れる燃料は、前記スロットル弁１６を経ることによシ
、該スロットル弁の絞シ作用によってその大部分が気化
し、気化熱を生じる。The fuel drawn into the intake passage from the fuel ports 31, 32 and flowing toward the air supply port 24 of the engine 20 through the intake passage passes through the throttle valve 16, causing the fuel to be drawn into the intake passage. Most of it is vaporized by the oxidation action, producing heat of vaporization.
この気化熱により、合成樹脂材料から成る気化器本体１
４を効果的に冷却すべく、該気化器本体と熱インシュレ
ータ１８とに関連して、環状の熱伝導部材３４が設けら
れている。This heat of vaporization causes the vaporizer body 1 made of synthetic resin material to
An annular heat conducting member 34 is provided in association with the vaporizer body and the thermal insulator 18 in order to effectively cool the vaporizer 4 .
前記熱伝導部利３４は、気化器本体１４の前記合成樹脂
材料が有する熱伝導度よりも大きな値を有する例えばア
ルミ合金のような金属材料から成る。前記熱伝導部材３
４に耐腐食性等を与えるだめにこれを保護膜でコーティ
ングすることが望ましい。前記熱伝導部材３４の内径は
、前記吸気孔１２の前記一端における口径に等しい。The heat conductive member 34 is made of a metal material such as aluminum alloy, which has a thermal conductivity greater than that of the synthetic resin material of the carburetor body 14. The heat conductive member 3
In order to provide corrosion resistance to 4, it is desirable to coat it with a protective film. The inner diameter of the heat conductive member 34 is equal to the diameter of the intake hole 12 at the one end.
前記熱インシュレータ１８および気化器本体１４の互い
に接する端面のそれぞれには、互いに共同して前記熱伝
導部材３４を収容するだめの環状凹溝３６．３８が形成
されており、前記熱伝導部月３４はその内周面４０を前
記吸気通路の壁面に一致して前記凹溝３６，３８により
規定される環状凹所内に配置されている。これによシ、
熱伝導部材３４は、熱インシュレーク１８および気化器
本体１４に接し、前記内周面４０を前記吸気通路の前記
壁面に露出する。Annular grooves 36 and 38 are formed in the mutually contacting end surfaces of the heat insulator 18 and the vaporizer body 14, respectively, for jointly accommodating the heat conductive member 34. is disposed within an annular recess defined by the grooves 36 and 38, with its inner circumferential surface 40 coinciding with the wall surface of the intake passage. For this,
The heat conductive member 34 is in contact with the heat insulator 18 and the carburetor main body 14, and exposes the inner circumferential surface 40 to the wall surface of the intake passage.
前記熱伝導部材３４は、その内周面を前記吸気通路の壁
面に露出することから、前記燃料の前記した気化熱によ
って冷却される。このため、前記気化器本体１４は、冷
却された熱伝導部材３４に接する面で該熱伝導部材と効
率的な熱交換を行なう。しかも、前記熱伝導部材３４は
前記熱インシュレータ１８にも接することから、熱伝導
部材３４は熱源である前記機関２０から前記熱インシュ
レータ１８を経て気化器本体１４に伝えられようとする
熱量の一部を吸収する。その結果、前記機関が高負荷運
転を維続しても、前記気化器本体１４の温度カベーバロ
ックやパーコレーションを生じる程に高まることはなく
、これによシ気化器本体１４の高温化による前記機関２
０の不調を防止することができる。Since the heat conductive member 34 has its inner peripheral surface exposed to the wall surface of the intake passage, it is cooled by the heat of vaporization of the fuel. Therefore, the vaporizer main body 14 efficiently exchanges heat with the cooled heat conductive member 34 on the surface thereof that is in contact with the heat conductive member 34 . Furthermore, since the heat conduction member 34 is also in contact with the heat insulator 18, the heat conduction member 34 absorbs a portion of the amount of heat that is to be transferred from the engine 20, which is the heat source, to the carburetor main body 14 via the heat insulator 18. absorb. As a result, even if the engine continues to operate under high load, the temperature of the carburetor body 14 will not rise to the point where it causes cover lock or percolation, and this will prevent the temperature of the carburetor body 14 from increasing, causing the engine 2
0 malfunction can be prevented.
前記熱伝導部材３４の内周面４０を前記吸気通路の壁面
よシ突出させることもできるが、前記吸気通路を経る混
合気の流通を円滑にする上で、前記したとおり、内周面
４０を前記吸気通路の壁面に一致させることが好ましい
。まだ、前記熱伝導部材として、前記したような環状部
材を用いることに代えて例えば弧状の熱伝導部材を用い
ることもできる。Although the inner circumferential surface 40 of the heat conductive member 34 may be made to protrude from the wall surface of the intake passage, in order to smooth the flow of the air-fuel mixture through the intake passage, as described above, the inner circumferential surface 40 is It is preferable to match the wall surface of the intake passage. However, instead of using the annular member as described above, for example, an arc-shaped heat conductive member may be used as the heat conductive member.
まだ、第２図に示されているように、前記熱インシュレ
ータ１８と気化器本体１４との当接を防止すべく、両者
１８．１４間に熱伝導部材３４°を介在させることがで
きる。第２図に示す例では、熱インシュレータ１８と気
化器本体１４との間には気化熱により冷却される熱伝導
部材３４゛が位置する。従って、前記機関２０から前記
熱インシュレータ１８へ伝えられる熱は、気化器本体１
４に直接伝えられることはなく、冷却された前記熱伝導
部材３４によシ吸収されることから、気化器本体１４の
高温化を一層効果的に防止できる。Still, as shown in FIG. 2, a heat conductive member 34° may be interposed between the heat insulator 18 and the carburetor body 14 to prevent them from coming into contact with each other. In the example shown in FIG. 2, a heat conductive member 34' is located between the heat insulator 18 and the vaporizer body 14 and is cooled by the heat of vaporization. Therefore, the heat transferred from the engine 20 to the heat insulator 18 is transferred to the carburetor main body 1
Since the heat is absorbed by the cooled heat conduction member 34 without being directly transmitted to the heat transfer member 4, it is possible to more effectively prevent the temperature of the vaporizer body 14 from increasing.
第３図および第４図は、環状の前記熱伝導部材３４°に
それぞれ筒状部分４２を設けた例を示す。FIGS. 3 and 4 show an example in which a cylindrical portion 42 is provided on each of the annular heat conductive members 34°.
第３図に示す例では、筒状部分４２は、環状の熱伝導部
材３４゛の開口縁部よシ前記熱インシーレータ１８の通
路へ伸び、筒状部分４２の内周面は前記通路２２の壁面
すなわち前記吸気通路の壁面に一致する。まだ、第４図
に示す例では、筒状部分４２は環状の熱伝導部材３４“
の開口縁部よシ前記気化器本体１４の前記吸気孔１２に
伸び、筒状部分４２の内周面は吸気孔１２の壁面に一致
する。In the example shown in FIG. 3, the cylindrical portion 42 extends from the opening edge of the annular heat-conducting member 34' to the passageway of the thermal insulator 18, and the inner circumferential surface of the cylindrical portion 42 extends from the opening edge of the annular heat-conducting member 34'' to the wall surface of the passageway 22. That is, it coincides with the wall surface of the intake passage. However, in the example shown in FIG.
The cylindrical portion 42 extends from the opening edge to the intake hole 12 of the carburetor body 14, and the inner peripheral surface of the cylindrical portion 42 coincides with the wall surface of the intake hole 12.
環状の熱伝導部材３４°に、前記吸気通路の壁面に露出
する前記した筒状部分４２を設けることによシ、熱伝導
部材３４′における前記吸気通路への露出面積の増大を
図ることができ、これにより熱伝導部材３４の気化熱吸
収効率を高めて、気化器本体１４の冷却効果を一層高め
ることができる。By providing the above-mentioned cylindrical portion 42 exposed on the wall surface of the intake passage on the annular heat conduction member 34°, it is possible to increase the exposed area of the heat conduction member 34' to the intake passage. This increases the vaporization heat absorption efficiency of the heat conductive member 34 and further enhances the cooling effect of the vaporizer main body 14.
また、第４図に示したように、前記筒状部分４２を吸気
孔１２に向けて伸長させることにより、前記機関のアイ
ドリンク運転時における氷結の発生を抑制することがで
きる。Furthermore, as shown in FIG. 4, by extending the cylindrical portion 42 toward the intake hole 12, it is possible to suppress the formation of ice during idle-link operation of the engine.
すなわち、アイドリンク運転では気化器本体１４が低温
に保持され、またスロットル弁１６の近傍における該ス
ロットル弁の下流側すなわち機関２０側は気化熱によシ
温度が極端に低下する。That is, in idle link operation, the carburetor main body 14 is maintained at a low temperature, and the temperature of the downstream side of the throttle valve 16, that is, the engine 20 side, is extremely reduced due to the heat of vaporization.
このため、梅雨時のような低温、高湿度の環境下でアイ
ドリンク運転を行なうと、アイドリンク燃料ポート３２
の近傍に氷結が発生することがあシ、この氷結は前記機
関２ｏのアイドリング運転を不調に陥れる。Therefore, when idle link operation is performed in a low temperature and high humidity environment such as during the rainy season, the idle link fuel port 32
There is a possibility that icing occurs near the engine 2o, and this icing causes trouble in the idling operation of the engine 2o.
しかしながら、第４図に示すように、筒状部分４２を吸
気孔１２へ伸長させることにょシ、主として前記熱イン
シュレータ１８から前記熱伝導部材３４′に伝えられる
熱によって、アイドリンク時には前記吸気孔１２内を暖
めることができ、これにより前記した氷結の発生を抑制
することができる。However, as shown in FIG. 4, when the cylindrical portion 42 extends toward the intake hole 12, the heat transferred from the thermal insulator 18 to the heat conductive member 34' causes the intake hole It is possible to warm the inside, thereby suppressing the above-mentioned freezing.
第５図に示されているように、熱伝導部材３４“の筒状
部分４２をアイドリング燃料ポートが設けられる吸気孔
１２の壁面部分を越えて伸長させ、該筒状部分に前記し
たと同様々アイドリンク燃料ポート３２を設けることに
よって、前記した氷結の発生を防止することができる。As shown in FIG. 5, the cylindrical portion 42 of the thermally conductive member 34'' is extended beyond the wall portion of the intake hole 12 in which the idle fuel port is provided, and the cylindrical portion 42 is inserted into the cylindrical portion in the same manner as described above. By providing the idle link fuel port 32, the above-mentioned freezing can be prevented from occurring.
第５図に示された全体に筒状の熱伝導部材３４は、吸気
孔１２の壁面の一部を構成し、該壁面部分に前記燃料供
給路２８に連通するアイドリング燃料ポート３２が開放
する。従って、アイドリンク運転時には、アイドリンク
燃料ポート３２の近傍を確実に暖めることができ、これ
によシ前記した氷結の発生を確実に防止し、該氷結によ
る前記機関の不調を防止することができる。The generally cylindrical heat conductive member 34 shown in FIG. 5 constitutes a part of the wall surface of the intake hole 12, and an idling fuel port 32 communicating with the fuel supply passage 28 is opened in the wall surface portion. Therefore, during idle-link operation, the vicinity of the idle-link fuel port 32 can be reliably heated, thereby reliably preventing the formation of the above-mentioned icing, and preventing the engine from malfunctioning due to the icing. .
本発明によれば、前記したように合成樹脂材料から成る
気化器本体の高負荷運転時における高温化ヲ防止シてベ
ーパロックやパーコレーションの発生を防止することが
できることから、気化器本体の高温化による機関の不調
を防止して該機関の運転を良好に維持することができる
。According to the present invention, as described above, it is possible to prevent the vaporizer main body made of a synthetic resin material from increasing in temperature during high-load operation, thereby preventing the occurrence of vapor lock and percolation. It is possible to prevent engine malfunction and maintain good operation of the engine.
さらに、本発明によれば、アイドリンク燃料ポート近傍
を加熱することによってアイドリンク運転時の氷結の発
生を防止することができることから、この氷結による前
記機関の不調を防止して該機関のアイドリンク運転を良
好に維持することができる。Furthermore, according to the present invention, it is possible to prevent the occurrence of icing during idling operation by heating the vicinity of the idling fuel port. It is possible to maintain good driving performance.
第１図は本発明に係る気化器の一部を破断して示す正面
図でアシ、第２図ないし第５図はそれぞれ本発明の他の
実施例を示す第１図と同様な図面である。
１０：気化器、 １２：吸気孔、１４：気化器
本体、 １８：熱インシュレータ、２０：内燃機関
、
２２：熱インシュレータの通路、
２４：給気口、 ２８：燃料供給路、３２：燃
料ボート、 ３４．３４ ：熱伝導部材、４０：内
周面、 ４２：筒状部分。
代理人 弁理士松永宣行
第１図
第２図
０
第、３図
０
第４図
０
第５図FIG. 1 is a partially cutaway front view of a vaporizer according to the present invention, and FIGS. 2 to 5 are similar drawings to FIG. 1 showing other embodiments of the present invention. . 10: carburetor, 12: intake hole, 14: carburetor main body, 18: heat insulator, 20: internal combustion engine, 22: heat insulator passage, 24: air supply port, 28: fuel supply path, 32: fuel boat, 34.34: Heat conductive member, 40: Inner peripheral surface, 42: Cylindrical portion. Agent Patent Attorney Nobuyuki Matsunaga Figure 1 Figure 2 Figure 0 Figure 3 Figure 4 Figure 5
Claims (7)
に連通し、前記熱インシュレータにより規定される通路
と共同して前記給気口に至る吸気通路を構成する吸気孔
であってその壁面に燃料ポートが開放する吸気孔が形成
された合成樹脂材料から成る気化器本体と、該気化器本
体の前記合成樹脂材料が有する熱伝導度よりも大きな値
の熱伝導度を有する拐料から成シ、前記熱インシュレー
タおよび気化器本体に接しかつ前記吸気通路の壁面に少
なくとも一部を露出して配置される熱伝導部材とを含む
、内燃機関のだめの気化器。(1) An intake hole that communicates with the air supply port of an internal combustion engine through a cylindrical heat insulator and forms an intake passage that reaches the air supply port together with a passage defined by the heat insulator, and its wall surface a carburetor body made of a synthetic resin material in which an intake hole is formed with a fuel port open to the carburetor body; A carburetor for an internal combustion engine, comprising: (b) a heat conductive member disposed in contact with the heat insulator and the carburetor main body and with at least a portion thereof exposed on a wall surface of the intake passage.
の内周面を前記吸気通路の前記壁面に一致しテ前記熱イ
ンシュレータおよび前記気化器本体に埋設されて成る特
許請求の範囲第（１）項に記載の気化器。(2) The heat conductive member has an annular shape, and the heat conductive member is embedded in the heat insulator and the carburetor main body so that its inner peripheral surface coincides with the wall surface of the intake passage. The vaporizer described in item (1).
化器本体との当接を、防止すべく該両者間に、前記吸気
通路に開口を整合して配置される環状部材である特許請
求の範囲第（１）項に記載の気化器。(3) The heat conductive member is an annular member disposed between the heat insulator and the carburetor body with an opening aligned with the intake passage to prevent the heat insulator and the carburetor body from coming into contact with each other. The vaporizer according to paragraph (1).
ュレータの前記通路へ伸びる筒状部分を備え、該筒状部
分の内周面は前記通路の壁面に一致する特許請求の範囲
第（３）項に記載の気化器。(4) The annular member includes a cylindrical portion extending from the edge of the opening to the passage of the thermal insulator, and the inner peripheral surface of the cylindrical portion coincides with the wall surface of the passage. The vaporizer described in section 3).
体の前記吸気孔へ伸びる筒状部分を備え、該゛一部分の
内周面は前記吸気孔の前記壁面に一致する特許請求の範
囲第（３）項に記載の気化器。(5) The annular member includes a cylindrical portion extending from the edge of the opening to the intake hole of the vaporizer main body, and the inner peripheral surface of the portion coincides with the wall surface of the intake hole. A vaporizer according to scope item (3).
に連通ずる吸気孔が形成されかつ燃料供給路が形成され
た合成樹脂材料から成る気化器本体と、該気化器本体の
前記合成樹脂材料が有する熱伝導度よりも大きな値の熱
伝導度を有する材料から成り、前記吸気孔の壁面の少な
くとも一部を規定すべく前記気化器本体に設けられかつ
前記熱インシュレータに接する熱伝導部材とを含み、該
熱伝導部利により規定された前記吸気孔の壁面部分に、
該壁面部分に開放しかつ前記燃料供給路に連通ずるアイ
ドリンク燃料ポートを設けたことを特徴とする、内燃機
関のだめの気化器。(6) A carburetor body made of a synthetic resin material, in which an intake hole communicating with the air intake port of the internal combustion engine through a cylindrical heat insulator and a fuel supply path are formed, and the synthetic resin of the carburetor body. a thermally conductive member that is made of a material having a thermal conductivity larger than that of the material and that is provided in the vaporizer body to define at least a part of the wall surface of the air intake hole and that is in contact with the thermal insulator; , in a wall portion of the intake hole defined by the heat conduction portion,
A vaporizer for an internal combustion engine, characterized in that an idle link fuel port is provided in the wall portion and communicates with the fuel supply path.
範囲第（６）項に記載の気化器。(7) The vaporizer according to claim (6), wherein the heat conductive member has an overall cylindrical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13979082A JPS5929754A (en) | 1982-08-13 | 1982-08-13 | Carburetor for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13979082A JPS5929754A (en) | 1982-08-13 | 1982-08-13 | Carburetor for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5929754A true JPS5929754A (en) | 1984-02-17 |
Family
ID=15253483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13979082A Pending JPS5929754A (en) | 1982-08-13 | 1982-08-13 | Carburetor for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5929754A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61181854U (en) * | 1985-05-02 | 1986-11-13 | ||
| JPS61186760U (en) * | 1985-05-14 | 1986-11-21 | ||
| JPS6248953A (en) * | 1985-08-28 | 1987-03-03 | Honda Motor Co Ltd | Carburetor |
| JPH07253047A (en) * | 1985-06-07 | 1995-10-03 | Outboard Marine Corp | Carburetor |
| US7782172B2 (en) | 2005-09-07 | 2010-08-24 | Rohm Co., Ltd. | Variable chip resistor |
| WO2011017507A1 (en) * | 2009-08-06 | 2011-02-10 | Zippo Manufacturing Company | Insulated burner system for gas-fueled lighters |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3109043A (en) * | 1960-05-02 | 1963-10-29 | Acf Ind Inc | Carburetor |
| JPS4939710U (en) * | 1972-07-11 | 1974-04-08 |
-
1982
- 1982-08-13 JP JP13979082A patent/JPS5929754A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3109043A (en) * | 1960-05-02 | 1963-10-29 | Acf Ind Inc | Carburetor |
| JPS4939710U (en) * | 1972-07-11 | 1974-04-08 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61181854U (en) * | 1985-05-02 | 1986-11-13 | ||
| JPS61186760U (en) * | 1985-05-14 | 1986-11-21 | ||
| JPH07253047A (en) * | 1985-06-07 | 1995-10-03 | Outboard Marine Corp | Carburetor |
| JPS6248953A (en) * | 1985-08-28 | 1987-03-03 | Honda Motor Co Ltd | Carburetor |
| US7782172B2 (en) | 2005-09-07 | 2010-08-24 | Rohm Co., Ltd. | Variable chip resistor |
| WO2011017507A1 (en) * | 2009-08-06 | 2011-02-10 | Zippo Manufacturing Company | Insulated burner system for gas-fueled lighters |
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