JPH10288097A - Film type carburetor - Google Patents
Film type carburetorInfo
- Publication number
- JPH10288097A JPH10288097A JP11191197A JP11191197A JPH10288097A JP H10288097 A JPH10288097 A JP H10288097A JP 11191197 A JP11191197 A JP 11191197A JP 11191197 A JP11191197 A JP 11191197A JP H10288097 A JPH10288097 A JP H10288097A
- Authority
- JP
- Japan
- Prior art keywords
- engine
- fuel
- intake
- heat insulating
- insulating pipe
- 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
Landscapes
- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は内燃機関のアイドル
運転で断熱管ないし吸気管の内部に燃料が溜り、機関の
姿勢か変化した時、機関へ供給される燃料量が急増する
のを抑えるようにした、特に4行程機関に効果が大なる
膜型気化器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention suppresses a sudden increase in the amount of fuel supplied to an engine when the attitude of the engine changes due to accumulation of fuel in an adiabatic pipe or an intake pipe during idling operation of an internal combustion engine. In particular, the present invention relates to a film-type vaporizer which is particularly effective for a four-stroke engine.
【0002】[0002]
【従来の技術】動力鋸、刈払機などの携帯作業機の機関
には、小型、軽量、高出力で、全姿勢での運転が可能な
ものが要求される。このため、一般には膜型気化器を備
えた空冷2行程機関が搭載されているが、近年は排ガス
対策のために4行程機関も搭載されるようになつた。機
関の運転中は周囲温度が非常に高くなるので、気化器内
部の燃料の蒸発を抑えるために、気化器と機関の吸気口
(吸気ポート)との間には、金属よりも断熱性に優れた
合成樹脂製の断熱管(インシユレータ)が接続される。2. Description of the Related Art Engines for portable working machines such as power saws and brush cutters are required to be small, light, high-output, and capable of operating in all postures. For this reason, generally, an air-cooled two-stroke engine equipped with a film-type vaporizer is mounted, but in recent years, a four-stroke engine has also been mounted for measures against exhaust gas. During operation of the engine, the ambient temperature becomes extremely high, so the heat insulation between the carburetor and the engine's intake port (intake port) is better than that of metal to suppress the evaporation of fuel inside the carburetor. The heat insulating pipe (insulator) made of synthetic resin is connected.
【0003】ところで、従来の膜型気化器では機関の冷
間始動時やアイドル運転時、燃料の霧化ないし気化が十
分でないため、気化器の吸気路へ吸引された燃料が、液
状のまま断熱管の内部に溜つてしまうことがある。断熱
管の内部に溜つた多量の燃料が、携帯作業機の姿勢変化
に伴つて機関へ急激に供給されると、混合気が急に濃く
なり、機関が停止することがある。[0003] In a conventional membrane carburetor, the fuel is not sufficiently atomized or vaporized at the time of cold start or idle operation of the engine. Therefore, the fuel sucked into the intake passage of the carburetor is insulated in a liquid state. May accumulate inside the tube. If a large amount of fuel accumulated inside the heat insulating pipe is suddenly supplied to the engine due to a change in the posture of the portable work machine, the air-fuel mixture becomes suddenly rich and the engine may stop.
【0004】本出願人の出願に係る特願平8-357202号に
開示される機関の膜型気化器では、断熱管と気化器との
接続部の断熱管側または気化器側に未気化燃料を保留す
る多孔質部材を設けている。しかし、上述の膜型気化器
でも4行程機関に取り付けた場合に、機関のアイドル運
転時の姿勢変化により、吸気路の多孔質部材よりも上流
側に滞留した燃料が、急に機関へ供給されて機関が停止
することがある。[0004] In a membrane type vaporizer of an engine disclosed in Japanese Patent Application No. 8-357202 filed by the applicant of the present invention, unvaporized fuel is provided on the heat insulating pipe side or the vaporizer side of the connecting portion between the heat insulating pipe and the vaporizer. Is provided. However, even when the above-described membrane carburetor is attached to a four-stroke engine, the fuel that has accumulated on the upstream side of the porous member of the intake passage is suddenly supplied to the engine due to a change in attitude during idle operation of the engine. The engine may stop.
【0005】図3に示すように、従来のロータリ絞り弁
式気化器では、機関のアイドル運転時の絞り弁47の開
度が小さいので混合気の量が少なく、また気化器の吸気
路16または断熱管63の吸気路63aでの混合気の流
れが速く、特に吸気路16の出口における絞り弁47の
開部分16aと反対側の閉部分16bに、多数の点で示
すように混合気のよどみが生じる傾向がある。吸気路1
6の出口における絞り弁47の閉部分16bに混合気が
滞留すると、燃料が液状になつて路壁に付着することが
ある。4行程機関では混合気が吸気路16,63aを経
て燃焼室へ直接供給されるので、吸気路16,63aで
の混合気の濃度変化が、燃焼室での燃焼に及ぼす影響度
が大きく、機関が停止しやすい。As shown in FIG. 3, in the conventional rotary throttle valve type carburetor, the amount of air-fuel mixture is small because the opening of the throttle valve 47 is small during idling operation of the engine. The flow of the air-fuel mixture in the intake passage 63a of the heat-insulating pipe 63 is fast, and particularly, the air-fuel mixture stagnates at the outlet of the intake passage 16 in the closed portion 16b opposite to the open portion 16a of the throttle valve 47 as shown by a number of points. Tends to occur. Intake path 1
If the air-fuel mixture stays in the closed portion 16b of the throttle valve 47 at the outlet of the fuel cell 6, the fuel may become liquid and adhere to the road wall. In a four-stroke engine, the air-fuel mixture is directly supplied to the combustion chamber via the intake passages 16 and 63a, so that the change in the concentration of the air-fuel mixture in the intake passages 16 and 63a greatly affects the combustion in the combustion chamber. But easy to stop.
【0006】[0006]
【発明が解決しようとする課題】本発明の課題は上述の
問題に鑑み、特に4行程機関の断熱管ないし吸気管の内
部に燃料が溜るのを防止し、機関のアイドル運転で機関
が傾斜した時に機関停止が生じないようにした膜型気化
器を提供することにある。SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to prevent fuel from accumulating in a heat insulating pipe or an intake pipe of a four-stroke engine, and to tilt the engine during idling operation of the engine. An object of the present invention is to provide a film-type carburetor which does not sometimes stop the engine.
【0007】[0007]
【課題を解決するための手段】上記課題を解決するため
に、本発明の構成は気化器の吸気路を機関の吸気口へ接
続する断熱管の内周壁に、機関の方へ向うにしたがつて
次第に深くなる複数の軸方向溝を設けたことを特徴とす
る。In order to solve the above-mentioned problems, the configuration of the present invention is such that an intake pipe of a carburetor is provided on an inner peripheral wall of a heat insulating pipe connecting to an intake port of the engine, and is directed toward the engine. A plurality of axial grooves that gradually become deeper are provided.
【0008】[0008]
【発明の実施の形態】本発明では吸気路の内周壁に軸方
向溝を設け、混合気の燃料が吸気路の内周壁に付着して
も、吸気流により流されて軸方向溝へ溜るようにし、機
関の姿勢変化に伴い急激に多量の燃料が機関へ供給され
るのを防止する。吸気路の内周壁に周方向等間隔に、複
数の軸方向溝を配設することにより、機関のいかなる姿
勢でも気化してない燃料が軸方向溝に溜るようにする。
軸方向溝の深さは機関の方へ近づくにしたがい次第に深
くなるように構成することにより、燃料の保留能力を確
保する。軸方向溝へ流入した燃料は、吸気流により次第
に機関の方へ流され、軸方向溝の端部から順次機関へ供
給される。DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, an axial groove is provided on an inner peripheral wall of an intake passage so that even if fuel of an air-fuel mixture adheres to the inner peripheral wall of the intake passage, the mixture is caused to flow by the intake air flow and collect in the axial groove. Thus, it is possible to prevent a large amount of fuel from being suddenly supplied to the engine due to a change in the attitude of the engine. By arranging a plurality of axial grooves on the inner peripheral wall of the intake passage at equal intervals in the circumferential direction, fuel that has not been vaporized in any posture of the engine is accumulated in the axial grooves.
The depth of the axial groove is configured to gradually increase as approaching the engine, thereby securing the fuel holding capacity. The fuel flowing into the axial groove is gradually flown toward the engine by the intake air flow, and is supplied to the engine sequentially from the end of the axial groove.
【0009】[0009]
【実施例】図1に示すように、機関の吸気口(図示せ
ず)には、断熱管63とガスケツト62を介して膜型気
化器の本体15が接続される。図示の気化器は、公知の
ロータリ絞り弁式のものであり、吸気路16と直交する
円筒部57が本体15に形成され、該円筒部57に絞り
孔47bを有する絞り弁47が回動可能かつ昇降可能に
嵌挿される。円筒部57を閉鎖する蓋板53から上方へ
突出する絞り弁47の軸部47aに絞り弁レバー51が
結合され、絞り弁レバー51のカム面51aと蓋板53
のフオロア52とからカム機構が構成される。絞り弁レ
バー51により絞り弁47をばね54の力に抗して加速
方向へ回動すると、絞り孔47bが吸気路16と連通す
る開度が増加し、また、絞り弁47から絞り孔47bへ
突出しかつ燃料ノズル56へ嵌挿するニードル弁55
が、燃料ノズル56の噴孔56aから上昇し、噴孔56
aの開度が増加する。不動の燃料ノズル56は本体15
の底部の孔58へ嵌合支持され、ジエツト59、逆止弁
66を経て燃料定量機構Aの定圧燃料室25へ連通され
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a main body 15 of a film-type carburetor is connected to an intake port (not shown) of an engine via a heat insulating pipe 63 and a gasket 62. The illustrated carburetor is of a known rotary throttle valve type, in which a cylindrical portion 57 orthogonal to the intake passage 16 is formed in the main body 15, and a throttle valve 47 having a throttle hole 47b in the cylindrical portion 57 is rotatable. It is inserted so as to be able to move up and down. A throttle valve lever 51 is coupled to a shaft portion 47a of a throttle valve 47 projecting upward from a lid plate 53 that closes the cylindrical portion 57, and a cam surface 51a of the throttle valve lever 51 and the lid plate 53 are connected.
And a follower 52 constitute a cam mechanism. When the throttle valve 47 is rotated in the acceleration direction by the throttle valve lever 51 against the force of the spring 54, the opening degree at which the throttle hole 47b communicates with the intake passage 16 increases, and the throttle hole 47b moves from the throttle valve 47 to the throttle hole 47b. Needle valve 55 protruding and fitted into fuel nozzle 56
Rises from the injection hole 56a of the fuel nozzle 56,
The opening of “a” increases. The stationary fuel nozzle 56 is attached to the body 15
And is connected to the constant-pressure fuel chamber 25 of the fuel metering mechanism A via the jet 59 and the check valve 66.
【0010】気化器本体15の下部に燃料ポンプ11と
燃料定量機構Aが構成される。すなわち、燃料ポンプ1
1は本体15の下端に膜10を挟んで中間体49を結合
し、膜10の上側にばね8aを収容する脈動圧室8を、
膜10の下側にポンプ室9をそれぞれ区画される。燃料
ポンプ11は4行程機関では吸気路63aの脈動する吸
気負圧を通路61を経て脈動圧室8へ導入し、2行程機
関ではクランク室の脈動圧を脈動圧室8へ導入すること
により、燃料槽37の燃料を通路38、入口13、逆止
弁12、通路12aを経てポンプ室9へ吸引し、通路1
2a、逆止弁7を経て通路7aへ吐き出す。A fuel pump 11 and a fuel metering mechanism A are provided below the carburetor body 15. That is, the fuel pump 1
1 couples the intermediate body 49 to the lower end of the main body 15 with the membrane 10 interposed therebetween, and forms the pulsating pressure chamber 8 containing the spring 8a above the membrane 10;
A pump chamber 9 is defined below the membrane 10. The fuel pump 11 introduces the pulsating intake pressure in the intake passage 63a into the pulsating pressure chamber 8 via the passage 61 in the four-stroke engine, and introduces the pulsating pressure in the crank chamber into the pulsating pressure chamber 8 in the two-stroke engine. The fuel in the fuel tank 37 is sucked into the pump chamber 9 via the passage 38, the inlet 13, the check valve 12, and the passage 12a, and
2a, discharge to the passage 7a through the check valve 7.
【0011】燃料定量機構Aは中間体49の下部に膜2
9を挟んでカバー30aを結合し、定圧燃料室25と大
気室30を区画する。定圧燃料室25の内部にレバー2
8が軸27により回動可能に支持される。レバー28の
一端部は流入弁2に係合され、流入弁2がばね24の力
を受けて通路7aの端部の弁座へ当接するように構成さ
れる。レバー28の他端部は膜29へ当接され、膜29
の下面に作用する大気圧の力がばね24の力よりも大き
くなると、レバー28が時計方向へ回動して流入弁2が
開き、通路7aから燃料が定圧燃料室25へ補給され、
こうして、定圧燃料室25は所定量の燃料を所定圧力に
保持する。定圧燃料室25の燃料は逆止弁66、ジエツ
ト59、噴孔56a、絞り孔47bを経て吸気路16へ
供給される。The fuel metering mechanism A has a membrane 2
The cover 30a is combined with the fuel cell 9 interposed therebetween to partition the constant-pressure fuel chamber 25 and the atmosphere chamber 30. Lever 2 inside constant pressure fuel chamber 25
8 is rotatably supported by a shaft 27. One end of the lever 28 is engaged with the inflow valve 2, and the inflow valve 2 is configured to abut on the valve seat at the end of the passage 7 a under the force of the spring 24. The other end of the lever 28 is in contact with the membrane 29,
When the force of the atmospheric pressure acting on the lower surface of the spring becomes larger than the force of the spring 24, the lever 28 rotates clockwise to open the inflow valve 2, and the fuel is supplied from the passage 7a to the constant pressure fuel chamber 25,
Thus, the constant-pressure fuel chamber 25 holds a predetermined amount of fuel at a predetermined pressure. The fuel in the constant pressure fuel chamber 25 is supplied to the intake passage 16 through the check valve 66, the jet 59, the injection hole 56a, and the throttle hole 47b.
【0012】上述のような膜型気化器は例えば特開昭59
-20551号公報により公知であり、機関のいかなる姿勢
(例えば横転された状態)でも、燃料ポンプ11により
定圧燃料室25へ送られた燃料が、機関の吸気負圧によ
り燃料ノズル56の噴孔56aから吸気路16へ供給さ
れる。The above-mentioned film-type vaporizer is disclosed in, for example,
No. 20551, the fuel sent to the constant-pressure fuel chamber 25 by the fuel pump 11 in any attitude of the engine (for example, in the state of being rolled over) is injected into the injection hole 56a of the fuel nozzle 56 by the suction negative pressure of the engine. To the intake path 16.
【0013】図2に示すように、本発明によれば、機関
のアイドル運転で断熱管63ないし吸気管の内部に燃料
が溜るのを防止するために、断熱管63の内周壁に周方
向等間隔に、機関の方へ近づくしたがつて次第に深くな
る複数(図示の実施例では4つ)の軸方向溝65が配設
される。断熱管63の吸気路63aは、内径が気化器の
吸気路16とほぼ等しく、かつ終端64でラツパ状に拡
がつて機関3の吸気口4へ接続する。図示の実施例で
は、複数の通しボルト60により、気化器の端部フラン
ジとガスケツト62と断熱管63が機関の壁部へ締結さ
れる。As shown in FIG. 2, according to the present invention, in order to prevent fuel from accumulating in the heat insulating pipe 63 or the inside of the intake pipe during idling operation of the engine, the inner circumferential wall of the heat insulating pipe 63 has a circumferential direction or the like. A plurality (four in the illustrated embodiment) of axial grooves 65 are provided at the intervals, which are progressively deeper as they approach the engine. The intake path 63a of the heat insulating pipe 63 has an inner diameter substantially equal to that of the intake path 16 of the carburetor, and expands in a wrapper shape at the terminal end 64 to be connected to the intake port 4 of the engine 3. In the embodiment shown, a plurality of through bolts 60 fasten the end flange of the carburetor, the gasket 62 and the heat insulating tube 63 to the engine wall.
【0014】次に、本発明による膜型気化器の作動につ
いて説明する。機関のアイドル運転時、絞り弁47は図
2に示す状態にあり、吸気路16へ吸引された吸気は、
絞り弁47の絞り孔47bを通過する時、燃料ノズル5
6の噴孔56aから燃料を吸引し、絞り孔47bから吸
気路16の出口の開部分16aへ流れ、さらに断熱管6
3を経て機関へ流れる。Next, the operation of the film type vaporizer according to the present invention will be described. During idling operation of the engine, the throttle valve 47 is in the state shown in FIG. 2, and the intake air sucked into the intake passage 16 is:
When passing through the throttle hole 47b of the throttle valve 47, the fuel nozzle 5
The fuel is sucked from the injection hole 56a of the suction passage 6 and flows from the throttle hole 47b to the open portion 16a of the outlet of the intake passage 16, and further the heat insulating pipe 6
Flow through 3 to the engine.
【0015】機関のアイドル運転時、混合気の流れが遅
いので、いわゆる死空間となる吸気路16の出口の閉部
分16bに混合気が滞留し、吸気よりも比重の大なる燃
料が溜りやすい。吸気路16の内周壁へ付着した燃料
は、機関の姿勢変化に伴い断熱管63を経て機関の方に
流れていく。この時、燃料は断熱管63の吸気路63a
の途中から次第に深くなる軸方向溝65の内部へ流入
し、急激に機関へ吸入されることはなく、軸方向溝65
の終端64から徐々に機関へ吸入されるので、機関が停
止することはない。4つの軸方向溝65が周方向等間隔
に配設されるので、機関の全方向の姿勢に対して同様に
作用する。During the idle operation of the engine, the flow of the air-fuel mixture is slow, so that the air-fuel mixture stagnates in the closed portion 16b of the outlet of the intake path 16, which is a so-called dead space, and fuel having a specific gravity greater than that of the intake air tends to accumulate. Fuel adhering to the inner peripheral wall of the intake passage 16 flows toward the engine through the heat insulating pipe 63 as the attitude of the engine changes. At this time, the fuel is supplied to the intake passage 63a of the heat insulating pipe 63.
Flows into the inside of the axial groove 65 which gradually becomes deeper, and is not suddenly sucked into the engine.
Is gradually sucked into the engine from the end 64 of the engine, so that the engine does not stop. Since the four axial grooves 65 are arranged at equal intervals in the circumferential direction, the same applies to the attitude of the engine in all directions.
【0016】上述のように、機関のアイドル運転時、吸
気路16の出口の閉部分16bに溜つた燃料が、機関の
振動や姿勢変化に伴つて一気に流れ出し、濃い混合気が
機関へ供給され、機関が停止するというような不具合が
解消される。As described above, during idling operation of the engine, fuel accumulated in the closed portion 16b of the outlet of the intake passage 16 flows out at once with the vibration and attitude change of the engine, and a rich mixture is supplied to the engine. Problems such as a stop of the engine are eliminated.
【0017】なお、本発明はロータリ絞り弁式膜型気化
器に基づき説明したが、これに限定されるものではな
く、蝶弁式気化器、ピストン弁式気化器でも同様の効果
が得られる。Although the present invention has been described based on the rotary throttle valve type film vaporizer, the present invention is not limited to this, and the same effects can be obtained with a butterfly valve vaporizer and a piston valve vaporizer.
【0018】[0018]
【発明の効果】本発明は上述のように、気化器の吸気路
を機関の吸気口へ接続する断熱管の内周壁に、機関の方
へ向うにしたがつて次第に深くなる複数の軸方向溝を設
けたから、機関のアイドル運転で吸気路の内周壁に燃料
が溜つても、やがて燃料は軸方向溝へ流入し、毛管作用
により保持されるので、機関の姿勢が変化するなどして
も、軸方向溝に溜つた多量の燃料が急に機関へ供給され
て機関が停止するようなことは起らない。As described above, the present invention provides a plurality of axial grooves which gradually become deeper toward the engine in the inner peripheral wall of the heat insulating pipe connecting the intake path of the carburetor to the intake port of the engine. Even if fuel accumulates on the inner peripheral wall of the intake passage during idling operation of the engine, fuel eventually flows into the axial groove and is retained by capillary action, so even if the attitude of the engine changes, It does not occur that a large amount of fuel accumulated in the axial groove is suddenly supplied to the engine and the engine stops.
【0019】断熱管は合成樹脂からなるので、金型の一
部を変更するでけで、断熱管に軸方向溝を簡単に形成で
き、製造経費の増加を抑えることができる。Since the heat-insulating pipe is made of synthetic resin, the axial groove can be easily formed in the heat-insulating pipe only by changing a part of the mold, and an increase in manufacturing cost can be suppressed.
【0020】本発明では気化器の吸気路と断熱管の吸気
路が同径であり連続しているので、絞り弁が全開時の混
合気の流れにはあまり影響がなく、機関の出力が低下す
ることはない。In the present invention, since the intake path of the carburetor and the intake path of the heat insulating pipe have the same diameter and are continuous, the flow of the air-fuel mixture when the throttle valve is fully opened is not so affected, and the output of the engine is reduced. I will not do it.
【図1】本発明に係る膜型気化器の正面断面図である。FIG. 1 is a front sectional view of a film type vaporizer according to the present invention.
【図2】同膜型気化器の要部を拡大して示す平面断面図
である。FIG. 2 is an enlarged plan sectional view showing a main part of the film type vaporizer.
【図3】従来の膜型気化器の要部を拡大して示す平面断
面図である。FIG. 3 is an enlarged plan sectional view showing a main part of a conventional film-type vaporizer.
A:燃料定量機構 2:流入弁 3:機関 4:吸気口
5:ガスケツト 7:逆止弁 7a:通路 8:脈動
圧室 8a:ばね 9:ポンプ室 10:膜 11:燃
料ポンプ 12:逆止弁 12a:通路 13:入口
15:気化器本体 15a:端部 15b:端部 16:吸気路 16a:
開部分 16b:閉部分 24:ばね 25:定圧燃料
室 27:軸 28:レバー 29:膜 30:大気室
30a:カバー 37:燃料槽 38:通路 47:
絞り弁 47a:軸部 47b:絞り孔 49:中間体
51:絞り弁レバー 51a:カム面 52:フオロア 53:蓋板 54:ばね 55:ニー
ドル弁 56:燃料ノズル 56a:噴孔 57:円筒
部 58:孔 59:ジエツト 60:ボルト 61:通路 61a:端部 62:ガスケツト 63:
断熱管 63a:吸気路 64:端部 65:軸方向溝
66:逆止弁A: Fuel metering mechanism 2: Inflow valve 3: Engine 4: Inlet 5: Gasket 7: Check valve 7a: Passage 8: Pulsating pressure chamber 8a: Spring 9: Pump chamber 10: Membrane 11: Fuel pump 12: Check Valve 12a: Passage 13: Inlet
15: vaporizer main body 15a: end 15b: end 16: intake path 16a:
Open part 16b: Closed part 24: Spring 25: Constant pressure fuel chamber 27: Shaft 28: Lever 29: Membrane 30: Atmospheric chamber 30a: Cover 37: Fuel tank 38: Passage 47:
Throttle valve 47a: Shaft portion 47b: Throttle hole 49: Intermediate body 51: Throttle valve lever 51a: Cam surface 52: Follower 53: Cover plate 54: Spring 55: Needle valve 56: Fuel nozzle 56a: Injection hole 57: Cylindrical portion 58 : Hole 59: Diet 60: Bolt 61: Passage 61 a: End 62: Gasket 63:
Insulated pipe 63a: Intake path 64: End 65: Axial groove 66: Check valve
Claims (3)
断熱管の内周壁に、機関の方へ向うにしたがつて次第に
深くなる複数の軸方向溝を設けたことを特徴とする膜型
気化器。A plurality of axial grooves are provided on an inner peripheral wall of a heat insulating pipe connecting an intake path of a carburetor to an intake port of an engine, the axial grooves gradually becoming deeper toward the engine. Membrane vaporizer.
に配列された4つの溝である、請求項1に記載の膜型気
化器。2. The film-type vaporizer according to claim 1, wherein the axial grooves are four grooves arranged at equal intervals in a circumferential direction of the heat insulating pipe.
気路とほぼ等しく、かつ終端でラツパ状に拡がつて機関
の吸気口に接続する、請求項1に記載の膜型気化器。こ
とを特徴とする膜型気化器。3. The film-type vaporizer according to claim 1, wherein the intake path of the heat insulating pipe has an inner diameter substantially equal to that of the intake path of the carburetor, and expands in a wrapper shape at the end to connect to the intake port of the engine. vessel. A film type vaporizer characterized by the above-mentioned.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11191197A JPH10288097A (en) | 1997-04-14 | 1997-04-14 | Film type carburetor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11191197A JPH10288097A (en) | 1997-04-14 | 1997-04-14 | Film type carburetor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH10288097A true JPH10288097A (en) | 1998-10-27 |
Family
ID=14573219
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11191197A Pending JPH10288097A (en) | 1997-04-14 | 1997-04-14 | Film type carburetor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH10288097A (en) |
-
1997
- 1997-04-14 JP JP11191197A patent/JPH10288097A/en active Pending
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