JP2003239807A - Butterfly throttle valve type carburetor for stratified scavenging internal combustion engine - Google Patents

Butterfly throttle valve type carburetor for stratified scavenging internal combustion engine

Info

Publication number
JP2003239807A
JP2003239807A JP2002041411A JP2002041411A JP2003239807A JP 2003239807 A JP2003239807 A JP 2003239807A JP 2002041411 A JP2002041411 A JP 2002041411A JP 2002041411 A JP2002041411 A JP 2002041411A JP 2003239807 A JP2003239807 A JP 2003239807A
Authority
JP
Japan
Prior art keywords
air
throttle valve
valve
carburetor
passage
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
Application number
JP2002041411A
Other languages
Japanese (ja)
Inventor
Harunori Seki
治範 関
Takeshi Kobayashi
猛 小林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Walbro Japan Inc
Original Assignee
Walbro Japan Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Walbro Japan Inc filed Critical Walbro Japan Inc
Priority to JP2002041411A priority Critical patent/JP2003239807A/en
Publication of JP2003239807A publication Critical patent/JP2003239807A/en
Pending legal-status Critical Current

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

Landscapes

  • Means For Warming Up And Starting Carburetors (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive butterfly throttle valve type carburetor for a stratified scavenging internal combustion engine with the same size as a conventional carburetor, in which phases of an air-fuel mixture throttle valve and an air throttle valve are easily set at optional angles required by the engine. <P>SOLUTION: An air-fuel mixture passage 22 and an air passage 42 horizontally piercing a carburetor body 25 are arranged in parallel with each other horizontally, and the air-fuel mixture throttle valve 20 and the air throttle valve 40 are respectively supported on valve stems 30 piercing both passages 22 and 42. An air limiting member 36 limiting air of the air passage 42 even when the air-fuel mixture throttle valve 20 is rotated a predetermined angle from a fully closed position is inserted in an entrance part of the air passage 42. A fuel pump 16 is provided in an upper part of the carburetor body 25, a constant pressure fuel feeding mechanism is provided in a lower part of the carburetor body 25, and a carburetor attaching bolt insertion hole 26 is provided between the air-fuel mixture passage 22 and the air passage 42. <P>COPYRIGHT: (C)2003,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は従来の気化器とほぼ
同寸であつて、混合気通路の混合気絞り弁が所定開度で
掃気用空気通路の空気絞り弁が開くようにした、層状掃
気内燃機関用蝶型絞り弁式気化器に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has substantially the same size as a conventional carburetor, and has a stratified structure in which a mixture throttle valve in a mixture passage is opened at a predetermined opening to open an air throttle valve in a scavenging air passage. The present invention relates to a butterfly type throttle valve carburetor for a scavenging internal combustion engine.

【0002】[0002]

【従来の技術】層状掃気2行程内燃機関は低負荷低速運
転では、混合気がクランク室から掃気通路を経て未燃焼
のまま排気口へ吹き抜ける量が少いので、運転性能を重
視して混合気のみを機関へ供給し、高負荷高速運転では
空気通路からの空気を混合気よりも遅らせて供給するこ
とが望まれる。
2. Description of the Related Art In a stratified scavenging two-stroke internal combustion engine, in a low-load low-speed operation, the amount of air-fuel mixture blown from the crank chamber through the scavenging passage to the exhaust port is unburned, and therefore the amount of air-fuel mixture is emphasized. It is desired that only the air is supplied to the engine, and that the air from the air passage is supplied later than the air-fuel mixture in high-load high-speed operation.

【0003】特開 2001-295652号公報に開示される層状
掃気内燃機関用蝶型絞り弁式気化器は、気化器本体に隔
壁により仕切られた空気通路と空気通路とを上下平行に
設け、1つの蝶型絞り弁を隔壁に軸支持し、蝶型絞り弁
の上半部が混合気通路を開閉する空気弁とし働き、蝶型
絞り弁の下半部が混合気通路を開閉する絞り弁として働
くように構成されている。しかし、上述の蝶型絞り弁式
気化器では、機関の回転数に関係なく空気量と燃料との
割合がほぼ一定に保たれるので、特に濃い混合気を必要
とする機関の冷間始動に対応できない。
A butterfly type throttle valve type carburetor for a stratified scavenging internal combustion engine disclosed in Japanese Patent Laid-Open No. 2001-295652 is provided with an air passage and an air passage partitioned by a partition wall in a carburetor body in parallel with each other. Two butterfly-type throttle valves are axially supported on the partition wall, the upper half of the butterfly-type throttle valve acts as an air valve that opens and closes the mixture passage, and the lower half of the butterfly-type throttle valve acts as a throttle valve that opens and closes the mixture passage. Is configured to work. However, in the above butterfly-type throttle valve type carburetor, the ratio of the air amount to the fuel is kept substantially constant regardless of the engine speed, so that it is particularly suitable for cold starting of an engine that requires a rich air-fuel mixture. I can not cope.

【0004】[0004]

【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、従来の気化器とほぼ同寸であり、混合気絞
り弁と空気絞り弁の位相が機関の要求する任意の角度に
簡単に設定できる低コストの層状掃気用蝶型絞り弁式気
化器を提供することにある。
In view of the above-mentioned problems, the object of the present invention is almost the same as that of the conventional carburetor, and the phases of the mixture throttle valve and the air throttle valve can be set to an arbitrary angle required by the engine. It is an object to provide a low-cost butterfly type throttle valve type vaporizer for stratified scavenging that can be easily set.

【0005】本発明の他の課題は、機関の始動時に掃気
用空気通路を閉じかつ混合気通路の空気を絞り、濃い混
合気をクランク室へ供給して始動性を高める、層状掃気
内燃機関用蝶型絞り弁式気化器を提供することにある。
Another object of the present invention is for a stratified scavenging internal combustion engine in which the scavenging air passage is closed and the air in the air-fuel mixture passage is throttled when the engine is started, and a rich air-fuel mixture is supplied to the crank chamber to improve startability. It is to provide a butterfly-type throttle valve carburetor.

【0006】[0006]

【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本体を横貫する混合気通路と
空気通路を気化器本体に左右平行に配設し、両方の通路
を横切る弁軸にそれぞれ混合気絞り弁と空気絞り弁を支
持し、混合気絞り弁が全閉位置から所定開度だけ回転し
ても空気通路の空気を制限する空気制限部材を空気通路
の出口部に嵌合し、気化器本体の上部に燃料ポンプを設
け、気化器本体の下部に定圧燃料供給機構を設け、気化
器取付用ボルト挿通孔を混合気通路と空気通路の間に設
けたことを特徴とする。
In order to solve the above-mentioned problems, the structure of the present invention has a mixture passage and an air passage which traverse the carburetor main body and are arranged in parallel with each other in the carburetor main body. An air restricting member that supports the air-fuel mixture throttle valve and the air throttle valve respectively on the traversing valve shafts and that restricts the air in the air passage even if the air-fuel mixture throttle valve rotates from the fully closed position by a predetermined opening degree A fuel pump on the top of the carburetor body, a constant pressure fuel supply mechanism on the bottom of the carburetor body, and a carburetor mounting bolt insertion hole between the mixture passage and the air passage. Characterize.

【0007】[0007]

【発明の実施の形態】本発明では気化器本体に混合気通
路と掃気用空気通路とを左右平行に配設し、気化器取付
用ボルト挿通孔を混合気通路と掃気用空気通路の間に設
け、混合気通路と掃気用空気通路とを横切る1つの弁軸
に混合気絞り弁と空気絞り弁とを支持し、かつ空気絞り
弁の開度を任意に設定できるようにする。
BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a mixture passage and a scavenging air passage are arranged in parallel in the carburetor body, and a carburetor mounting bolt insertion hole is provided between the mixture passage and the scavenging air passage. The air-fuel mixture throttle valve and the air throttle valve are supported by one valve shaft that crosses the air-fuel mixture passage and the scavenging air passage, and the opening degree of the air throttle valve can be arbitrarily set.

【0008】チヨーク弁を全閉にした時、混合気絞り弁
の開度が大きくなるフアストアイドル機構を設ける。こ
のため、空気絞り弁の開方向の回動に対して、空気の流
れを制限する空気制限部材を設け、内燃機関の始動性と
迅速な暖機運転の完了が得られるようにし、取扱いを簡
単にする。
A fast idle mechanism is provided which increases the opening of the mixture throttle valve when the chioke valve is fully closed. For this reason, an air restriction member that restricts the flow of air with respect to the rotation of the air throttle valve in the opening direction is provided so that startability of the internal combustion engine and quick warm-up operation can be completed, and handling is simple. To

【0009】また、混合気絞り弁の弁軸と空気絞り弁の
弁軸を別体にしたうえ、所定の遊びを有して連動可能に
連結する。弁軸の連結部は、気化器を内燃機関に取り付
けた後は、異物が付着しないように外部の大気と遮断し
て耐久性を高める。空気絞り弁の取付角度は混合気絞り
弁の取付角度よりも大きくし、初めは混合気絞り弁だけ
が開き、混合気絞り弁が所定開度を超えると空気絞り弁
が混合気絞り弁に連動して開き、混合気絞り弁と空気絞
り弁は同時に平行になり全開になる。
In addition, the valve shaft of the air-fuel mixture throttle valve and the valve shaft of the air throttle valve are separately provided, and have a predetermined play so that they can be interlocked. After the carburetor is attached to the internal combustion engine, the connecting portion of the valve shaft blocks the external atmosphere so as to prevent foreign matters from adhering to improve durability. The installation angle of the air throttle valve should be larger than the installation angle of the mixture throttle valve.Only the mixture throttle valve opens at first, and when the mixture throttle valve exceeds the specified opening, the air throttle valve interlocks with the mixture throttle valve. Then, the mixture throttle valve and the air throttle valve become parallel at the same time and fully opened.

【0010】[0010]

【実施例】図1に示すように、本発明による気化器が搭
載される掃気機関1は、頂端に点火栓2aを支持するシ
リンダ2にピストン4を嵌挿して、ピストン4の上側に
燃焼室7が区画され、ピストン4の下側にクランク室3
が区画される。クランク室3の壁部に、回転可能に支持
したクランク軸12と一体の腕11と、ピストン4とが
連接棒10により連結される。ピストン4の下死点付近
で開口する排気口5がシリンダ2の左壁部に、また燃焼
室7とクランク室3とを連通する掃気通路6がシリンダ
2の右壁部にそれぞれ設けられる。掃気通路6の途中部
分に開口しかつ逆止弁8を有する空気通路9と、クラン
ク室3に開口しかつ逆止弁8aを有する混合気通路9a
とが、シリンダ2の右壁部に上下平行に配設され、これ
らの通路9,9aは断熱管13の通路14,15を経
て、気化器本体25を左右平行に横貫する空気通路42
と混合気通路22にそれぞれ接続される。混合気通路2
2には混合気絞り弁20とチヨーク弁21が弁軸30,
31によりそれぞれ支持される。空気通路42には空気
絞り弁20が弁軸30により支持される。混合気絞り弁
20は図示してない操作ロツドまたはワイヤにより開閉
され、空気絞り弁40は任意に開閉できる。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a scavenging engine 1 equipped with a carburetor according to the present invention has a piston 4 fitted into a cylinder 2 having a spark plug 2a at its top end, and a combustion chamber above the piston 4. 7 is defined, and the crank chamber 3 is provided below the piston 4.
Is partitioned. An arm 11 that is rotatably supported and is integral with a crank shaft 12 and a piston 4 are connected to a wall portion of the crank chamber 3 by a connecting rod 10. An exhaust port 5 that opens near the bottom dead center of the piston 4 is provided in the left wall portion of the cylinder 2, and a scavenging passage 6 that connects the combustion chamber 7 and the crank chamber 3 is provided in the right wall portion of the cylinder 2. An air passage 9 having a check valve 8 open in the middle of the scavenging passage 6 and a mixture passage 9a having a check valve 8a opening to the crank chamber 3
Are arranged in parallel vertically on the right wall portion of the cylinder 2, and these passages 9 and 9a pass through the passages 14 and 15 of the heat insulating pipe 13 and the air passage 42 which laterally penetrates the carburetor main body 25 in the left-right direction.
And the mixture passage 22 respectively. Mixture passage 2
2, a mixture throttle valve 20 and a chain yoke valve 21 are provided on the valve shaft 30,
31 respectively supported. The air throttle valve 20 is supported by the valve shaft 30 in the air passage 42. The mixture throttle valve 20 is opened / closed by an operation rod or wire (not shown), and the air throttle valve 40 can be opened / closed arbitrarily.

【0011】気化器本体25の上壁には膜17を挟んで
カバー板18が結合され、図6に示すように、膜17の
上側にクランク室3の脈動圧を導入する脈動圧室44
が、膜17の下側にポンプ室45がそれぞれ区画され
る。燃料ポンプ16は膜17の上下振動に伴つて図示し
てない燃料槽の燃料を吸入弁を経てポンプ室45へ吸引
し、ポンプ室45の燃料を吐出弁と流入弁を経て公知の
定圧燃料室46へ供給する。図6に示すように、定圧燃
料供給機構は気化器本体25の下壁に膜24を挟んでカ
バー板23が結合され、膜24の上側に定圧燃料室46
が、膜24の下側に大気室47がそれぞれ区画される。
上述の流入弁は定圧燃料室46の燃料量が少くなると自
動的に開き、燃料ポンプ16から燃料を補給する。気化
器本体25の右端部には空気清浄器のケース19が結合
される。ケース19と気化器本体25とは断熱管13に
上下1対のボルト挿通孔26を貫通するボルトにより結
合される。断熱管13は4本のボルトにより機関の壁部
に結合される。
A cover plate 18 is joined to the upper wall of the carburetor body 25 with the membrane 17 interposed therebetween, and as shown in FIG. 6, a pulsating pressure chamber 44 for introducing the pulsating pressure of the crank chamber 3 to the upper side of the membrane 17.
However, the pump chambers 45 are defined below the membrane 17, respectively. The fuel pump 16 sucks the fuel in a fuel tank (not shown) into the pump chamber 45 through the intake valve along with the vertical vibration of the membrane 17, and the fuel in the pump chamber 45 through the discharge valve and the inflow valve into a known constant pressure fuel chamber. Supply to 46. As shown in FIG. 6, in the constant pressure fuel supply mechanism, the cover plate 23 is coupled to the lower wall of the carburetor body 25 with the membrane 24 interposed therebetween, and the constant pressure fuel chamber 46 is provided above the membrane 24.
However, the air chambers 47 are defined below the membrane 24.
The inflow valve described above automatically opens when the amount of fuel in the constant pressure fuel chamber 46 becomes small, and the fuel is supplied from the fuel pump 16. The case 19 of the air purifier is connected to the right end of the carburetor body 25. The case 19 and the carburetor main body 25 are joined to the heat insulating pipe 13 by bolts that pass through a pair of upper and lower bolt insertion holes 26. The adiabatic tube 13 is connected to the engine wall by four bolts.

【0012】図3,4に示すように、弁軸30の一端に
はレバー32が結合され、図5に示すように、弁軸30
に巻装されかつ一端がレバー32に他端が気化器本体2
5にそれぞれ係止されたばね30aの力により,通常は
混合気絞り弁20が図4に示す閉位置へ回転付勢され
る。レバー32の端部には折曲片32aが形成され、弁
軸31に結合したレバー33の先端の切欠33aに係合
可能に構成される。弁軸31には始動レバー34が遊回
転可能に支持され、始動レバー34の側縁部に設けた折
曲片34aがレバー33の下縁部に係合可能に構成され
る。機関の始動時、始動レバー34を図4に示す位置か
ら時計方向へ回動すると、折曲片34aによりレバー3
3も時計方向へ回動され、図3に示すように、レバー3
3によりレバー32が反時計方向へ回動される。始動レ
バー34に対する操作力を開放すると、折曲片32aが
切欠33aに係合し、チヨーク弁21が閉位置に、混合
気絞り弁20が僅かに開いたフアストアイドル位置に保
持される。
As shown in FIGS. 3 and 4, a lever 32 is connected to one end of the valve shaft 30, and as shown in FIG.
The lever 32 at one end and the carburetor main body 2 at the other end.
The air-fuel mixture throttle valve 20 is normally rotationally biased to the closed position shown in FIG. A bent piece 32a is formed at the end of the lever 32, and is configured to be engageable with a notch 33a at the tip of the lever 33 coupled to the valve shaft 31. A starting lever 34 is rotatably supported on the valve shaft 31, and a bent piece 34a provided on a side edge portion of the starting lever 34 is configured to be engageable with a lower edge portion of the lever 33. At the time of starting the engine, when the starting lever 34 is rotated clockwise from the position shown in FIG. 4, the lever 3 is moved by the bending piece 34a.
3 is also rotated clockwise and, as shown in FIG.
The lever 32 is rotated counterclockwise by 3. When the operating force applied to the starting lever 34 is released, the bent piece 32a is engaged with the cutout 33a, the chain yoke valve 21 is held in the closed position, and the mixture throttle valve 20 is held in the slightly idle fast idle position.

【0013】こうして、機関のアイドル運転に最適な混
合気が混合気通路22のチヨーク弁21の通孔21a
(図5)、混合気絞り弁20、通路15,9aを経てク
ランク室3へ供給される。この時、図7に示すように、
空気通路42の空気絞り弁40は閉位置にある。空気通
路42の出口端部には環状の空気制限部材36が嵌合さ
れ、空気制限部材36の上壁面に空気絞り弁40の外周
縁と接する円弧壁36aが、また気化器本体25の空気
通路42の下壁面にも空気絞り弁40の外周縁と接する
円弧壁36aが形成される。換言すれば、弁軸30に支
持された混合気絞り弁20と空気絞り弁40とは一緒に
回動するが、弁軸30が閉位置から回転角α゜までは空
気絞り弁40は空気通路42を閉じた状態に維持する。
Thus, the optimum mixture for the idle operation of the engine is the through hole 21a of the chain yoke valve 21 of the mixture passage 22.
(FIG. 5), the mixture gas is supplied to the crank chamber 3 through the throttle valve 20 and the passages 15 and 9a. At this time, as shown in FIG.
The air throttle valve 40 in the air passage 42 is in the closed position. An annular air restricting member 36 is fitted to the outlet end of the air passage 42, an arc wall 36a in contact with the outer peripheral edge of the air throttle valve 40 is provided on the upper wall surface of the air restricting member 36, and the air passage of the carburetor main body 25 is also provided. An arcuate wall 36 a that contacts the outer peripheral edge of the air throttle valve 40 is also formed on the lower wall surface 42. In other words, the air-fuel mixture throttle valve 20 supported by the valve shaft 30 and the air throttle valve 40 rotate together, but the air throttle valve 40 moves from the closed position to the rotation angle α °. Keep 42 closed.

【0014】図5に示すように、弁軸31に巻装されか
つ一端をレバー33に他端を気化器本体25のピン73
にそれぞれ係止されたばね74の力により、チヨーク弁
21は図4に示す全開位置へ回転付勢される。図5,6
に示すように、定圧燃料室46から混合気通路22のベ
ンチユリ部22aへ高速燃料噴孔27が突出され、また
定圧燃料室46から混合気絞り弁20の閉位置付近で混
合気絞り弁20よりも上流側部分へ複数の低速燃料噴孔
28が、混合気絞り弁20よりも下流側部分へパイロツ
ト噴孔がそれぞれ開口される。
As shown in FIG. 5, one end of the valve shaft 31 is wound around the lever 33, and the other end thereof is located at the pin 73 of the carburetor body 25.
The force of the springs 74 that are respectively locked to the tee yoke valve 21 rotationally biases the chain yoke valve 21 to the fully open position shown in FIG. Figures 5 and 6
As shown in, the high-speed fuel injection hole 27 is projected from the constant pressure fuel chamber 46 to the bench lily portion 22a of the air-fuel mixture passage 22, and from the constant-pressure fuel chamber 46 near the closed position of the air-fuel mixture throttle valve 20 Also, a plurality of low-speed fuel injection holes 28 are opened to the upstream side portion, and a pilot injection hole is opened to the downstream side portion from the mixture throttle valve 20.

【0015】上述のように、機関のアイドル運転では、
空気通路42からは空気が掃気通路6へ供給されず、混
合気通路22から濃い混合気がクランク室3へ供給さ
れ、図1に示すピストン4の下降行程で、燃焼室7の燃
焼ガスが排気口5から排出されると同時に、ピストン4
の下降に伴つてクランク室3の混合気が掃気通路6を経
て燃焼室7へ供給される。機関のアイドル運転では高速
運転に比べて、クランク室3の混合気が掃気通路6、燃
焼室7を経て未燃焼のまま排気口5へ流出する量(吹抜
け量)は僅かである。ピストン4の上昇とともに掃気通
路6と排気口5が閉じられ、混合気が圧縮されて点火栓
2aにより点火され、燃焼圧力によりピストン4が再び
下降される。
As described above, in idle operation of the engine,
Air is not supplied from the air passage 42 to the scavenging passage 6, but a rich air-fuel mixture is supplied to the crank chamber 3 from the air-fuel mixture passage 22, and the combustion gas in the combustion chamber 7 is exhausted during the downward stroke of the piston 4 shown in FIG. At the same time as being discharged from the mouth 5, the piston 4
The air-fuel mixture in the crank chamber 3 is supplied to the combustion chamber 7 through the scavenging passage 6 in accordance with the downward movement. In the idle operation of the engine, the amount of the air-fuel mixture in the crank chamber 3 flowing through the scavenging passage 6 and the combustion chamber 7 to the exhaust port 5 without being burned (blowing amount) is smaller than that in the high-speed operation. As the piston 4 rises, the scavenging passage 6 and the exhaust port 5 are closed, the mixture is compressed and ignited by the spark plug 2a, and the combustion pressure causes the piston 4 to descend again.

【0016】機関の暖機後は、レバー32を弁軸30お
よび混合気絞り弁20と一緒にばね30aの力に抗し
て、図3において反時計方向へ回動すると、混合気絞り
弁20の開度が増加し、折曲片32aと切欠33aとの
係合が外れ、弁軸31のばね74の力によりレバー33
と始動レバー34が図4に示す全開位置へ戻される。こ
の時、弁軸30の空気絞り弁40も開き、空気通路42
から空気が通路14,9、掃気通路6を経てクランク室
3へ供給される。ピストン4の上昇行程で、掃気通路6
に残る空気がまず燃焼室7へ入り、燃焼ガスとともに排
気口5へ流出し、続いてクランク室3の混合気が掃気通
路6を経て燃焼室7へ供給される。掃気通路6に残る空
気が燃焼室7の燃焼ガスを効率的に排気口5へ追い出す
ので、クランク室3からの混合気が未燃焼のまま排気口
5へ流出するのが抑えられる。
After the engine is warmed up, when the lever 32 together with the valve shaft 30 and the mixture throttle valve 20 is rotated counterclockwise in FIG. 3 against the force of the spring 30a, the mixture throttle valve 20 is rotated. Is increased, the bent piece 32a is disengaged from the notch 33a, and the force of the spring 74 of the valve shaft 31 causes the lever 33 to move.
Then, the starting lever 34 is returned to the fully open position shown in FIG. At this time, the air throttle valve 40 of the valve shaft 30 is also opened, and the air passage 42
The air is supplied to the crank chamber 3 through the passages 14 and 9 and the scavenging passage 6. During the ascending stroke of the piston 4, the scavenging passage 6
The air remaining in the combustion chamber 7 first enters the combustion chamber 7, flows out to the exhaust port 5 together with the combustion gas, and then the air-fuel mixture in the crank chamber 3 is supplied to the combustion chamber 7 through the scavenging passage 6. Since the air remaining in the scavenging passage 6 effectively expels the combustion gas in the combustion chamber 7 to the exhaust port 5, it is possible to prevent the air-fuel mixture from the crank chamber 3 from flowing to the exhaust port 5 without being burned.

【0017】図8〜13に示す実施例は空気制限部材3
6を設ける代りに、混合気絞り弁20の弁軸30と空気
絞り弁40の弁軸50とを分割し、混合気絞り弁20を
閉位置から始動位置ないしアイドル位置まで回動して
も、空気絞り弁40は停止したまま回動しないように構
成したものである。空気絞り弁40の弁軸50には混合
気絞り弁20の弁軸30の戻しばね30aよりも弱いば
ね51が、気化器本体25と弁軸50のレバー52との
間に装着される。つまり、弁軸50に巻装されかつ一端
を気化器本体25に他端をレバー52にそれぞれ係合し
たばね51の力により、空気絞り弁40は図10に示す
閉位置へ回転付勢される。空気絞り弁40は混合気絞り
弁20よりも全閉時の取付角度を大きく設定される。
The embodiment shown in FIGS. 8 to 13 is an air restricting member 3.
6, the valve shaft 30 of the air-fuel mixture throttle valve 20 and the valve shaft 50 of the air throttle valve 40 are divided, and the air-fuel mixture throttle valve 20 is rotated from the closed position to the starting position or the idle position. The air throttle valve 40 is configured so as not to rotate while stopped. A spring 51, which is weaker than the return spring 30a of the valve shaft 30 of the mixture throttle valve 20, is attached to the valve shaft 50 of the air throttle valve 40 between the carburetor body 25 and the lever 52 of the valve shaft 50. That is, the air throttle valve 40 is rotationally biased to the closed position shown in FIG. 10 by the force of the spring 51 wound around the valve shaft 50 and having one end engaged with the carburetor main body 25 and the other end engaged with the lever 52. . The air throttle valve 40 is set to have a larger installation angle than the air-fuel mixture throttle valve 20 when fully closed.

【0018】図11〜13に示すように、弁軸30と弁
軸50を連結する連動連結機構61は、弁軸30の内端
面に形成した径方向の突条63と、突条63が回転角β
゜だけ遊回動可能なように弁軸50の内端面に形成した
溝62とから構成される。この実施例では、空気制限部
材36を必要とせず、空気通路42は真直ぐに構成でき
るので、内燃機関の出力を向上できる。弁軸30がばね
30aの力により閉位置へ付勢されている時、弁軸50
はばね51の力により図10に示す閉位置へ付勢されて
おり、図11に示すように、突条63は溝62の上右側
壁に接している。今、弁軸30の混合気絞り弁20をア
イドル位置まで反時計方向へ回転角β゜だけ回動する
と、図12に示すように、弁軸30の突条63は弁軸5
0の溝62の内部で遊転するだけで、弁軸50には回転
力を与えない。こうして、機関の始動及びアイドル運転
つまりフアストアイドル運転では、混合気通路22の混
合気絞り弁20が空気絞り弁40よりも先行して、予め
設定してある任意の開度(図9に破線で示す位置)へ回
動するまでは、空気通路42の空気絞り弁40は図10
に示す全閉位置を保つている。混合気絞り弁20の弁軸
30と空気絞り弁40の弁軸とは互いに偏倚していない
ので、同時加工によりコストを低減できる。
As shown in FIGS. 11 to 13, in the interlocking connecting mechanism 61 for connecting the valve shaft 30 and the valve shaft 50, the radial projection 63 formed on the inner end surface of the valve shaft 30 and the projection 63 rotate. Angle β
The groove 62 is formed in the inner end surface of the valve shaft 50 so that it can be freely rotated by only °. In this embodiment, the air restricting member 36 is not required and the air passage 42 can be constructed straight, so that the output of the internal combustion engine can be improved. When the valve shaft 30 is biased to the closed position by the force of the spring 30a, the valve shaft 50
Is urged to the closed position shown in FIG. 10 by the force of the spring 51, and the ridge 63 is in contact with the upper right wall of the groove 62 as shown in FIG. Now, when the air-fuel mixture throttle valve 20 of the valve shaft 30 is rotated counterclockwise by the rotation angle β ° to the idle position, as shown in FIG.
It only idles inside the groove 62 of 0 and does not give a rotational force to the valve shaft 50. Thus, in engine start-up and idle operation, that is, in fast idle operation, the air-fuel mixture throttle valve 20 in the air-fuel mixture passage 22 precedes the air throttle valve 40, and a preset arbitrary opening degree (indicated by a broken line in FIG. 9). Until the air throttle valve 40 in the air passage 42 is rotated to the position shown in FIG.
It maintains the fully closed position shown in. Since the valve shaft 30 of the air-fuel mixture throttle valve 20 and the valve shaft of the air throttle valve 40 are not offset from each other, the cost can be reduced by the simultaneous processing.

【0019】図14〜17に示す実施例では、弁軸30
と弁軸50は同軸でなく、上下、前後または斜め方向へ
偏倚して平行に配設し、混合気絞り弁20の回転半径が
偏倚分だけ空気絞り弁40のそれよりも大きくなり、混
合気絞り弁20が先行して開放方向へ回動する時、空気
絞り弁40が全開まで円滑に回動するようにしたもので
ある。図示の実施例では、空気通路42と空気絞り弁4
0は、混合気通路22と混合気絞り弁20よりもやや上
方かつ後方(空気通路42の上流側)へ偏倚される。連
動連結機構61は弁軸30に結合したL字形の押棒68
と、弁軸50に結合した径方向の従動ピン67とから構
成される。弁軸30を混合気絞り弁20の閉位置から始
動位置ないしアイドル位置へ回動すると、押棒68が従
動ピン67に当接するだけで弁軸50を回動しない。弁
軸30をさらに混合気絞り弁20の全開方向へ回動する
と、押棒68により従動ピン67が押されて空気絞り弁
40が空気通路42を開く。第2,第3実施例では、図
3に示すような折曲片32aを有するレバー32と、切
欠33aを有するレバー33を設ける必要がなく、弁軸
31に始動レバー34を結合するだけでよい。
In the embodiment shown in FIGS. 14 to 17, the valve shaft 30 is used.
The valve shaft 50 and the valve shaft 50 are not coaxial and are arranged parallel to each other with a bias in the vertical direction, the front-back direction, or the diagonal direction, and the radius of rotation of the air-fuel mixture throttle valve 20 becomes larger than that of the air throttle valve 40 by a biased amount. When the throttle valve 20 precedes and rotates in the opening direction, the air throttle valve 40 smoothly rotates until it is fully opened. In the illustrated embodiment, the air passage 42 and the air throttle valve 4
0 is biased slightly above and behind the air-fuel mixture passage 22 and the air-fuel mixture throttle valve 20 (upstream of the air passage 42). The interlocking connecting mechanism 61 is an L-shaped push rod 68 connected to the valve shaft 30.
And a radial driven pin 67 connected to the valve shaft 50. When the valve shaft 30 is rotated from the closed position of the air-fuel mixture throttle valve 20 to the starting position or the idle position, the push rod 68 only comes into contact with the driven pin 67 and the valve shaft 50 is not rotated. When the valve shaft 30 is further rotated in the fully opening direction of the air-fuel mixture throttle valve 20, the driven pin 67 is pushed by the push rod 68 and the air throttle valve 40 opens the air passage 42. In the second and third embodiments, it is not necessary to provide the lever 32 having the bent piece 32a and the lever 33 having the notch 33a as shown in FIG. 3, and it is sufficient to connect the starting lever 34 to the valve shaft 31. .

【0020】この実施例では、連動連結機構61は気化
器本体25の中央部に配設され、気化器を機関に取り付
けた後は断熱管(インシユレータ)13により気化器本
体25のフランジ面、つまり連動連結機構61が閉鎖さ
れるので、異物や水分が連動連結機構61へ浸入するこ
とがなく、耐久性に優れる。
In this embodiment, the interlocking connecting mechanism 61 is arranged at the center of the carburetor main body 25, and after the carburetor is attached to the engine, the flange surface of the carburetor main body 25, namely Since the interlocking connection mechanism 61 is closed, foreign matter and water do not enter the interlocking connection mechanism 61, and the durability is excellent.

【0021】[0021]

【発明の効果】本発明は上述のように、気化器本体を横
貫する混合気通路と空気通路を左右平行に配置し、両方
の通路を貫通する弁軸にそれぞれ混合気絞り弁と空気絞
り弁を支持し、混合気絞り弁が全閉位置から所定開度だ
け回転しても空気通路の空気を制限する空気制限部材を
空気通路へ突出し、空気制限部材を空気通路の出口部に
挿入し、気化器本体の上部に燃料ポンプを設け、気化器
本体の下部に膜型定圧燃料供給機構を設け、気化器取付
用ボルト挿通孔を混合気通路と空気通路の間に設けたも
のであり、混合気絞り弁は空気絞り弁よりも回転角の差
だけ先行して全開方向へ回動するから、両者は同時に全
開になり、一方が全開不足を来すことはない。
As described above, according to the present invention, the air-fuel mixture passage and the air passage that pass through the carburetor body are arranged in parallel with each other, and the air-fuel mixture throttle valve and the air throttle valve are respectively provided on the valve shafts that pass through both passages. The air limiting member that restricts the air in the air passage even when the mixture throttle valve rotates from the fully closed position by a predetermined opening is projected into the air passage, and the air limiting member is inserted into the outlet portion of the air passage. A fuel pump was installed above the carburetor body, a membrane type constant pressure fuel supply mechanism was installed below the carburetor body, and a carburetor mounting bolt insertion hole was provided between the mixture passage and the air passage. Since the air throttle valve rotates in the fully open direction ahead of the air throttle valve by the difference in rotational angle, both are fully opened at the same time, and one of them does not become insufficiently fully opened.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に係る蝶型絞り弁式気化器を備えた層状
掃気内燃機関の左側面断面図である。
FIG. 1 is a left side sectional view of a stratified scavenging internal combustion engine equipped with a butterfly throttle valve carburetor according to the present invention.

【図2】同機関と断熱管の接続部を示す正面図である。FIG. 2 is a front view showing a connecting portion between the engine and a heat insulating pipe.

【図3】同蝶型絞り弁式気化器のアイドル運転時の状態
を示す左側面図である。
FIG. 3 is a left side view showing a state of the butterfly type throttle valve carburetor during idle operation.

【図4】同蝶型絞り弁式気化器の機関停止時の状態を示
す左側面図である。
FIG. 4 is a left side view showing the state of the butterfly type throttle valve carburetor when the engine is stopped.

【図5】同蝶型絞り弁式気化器の平面断面図である。FIG. 5 is a plan sectional view of the butterfly-type throttle valve type carburetor.

【図6】同蝶型絞り弁式気化器の絞り弁支持部の正面断
面図である。
FIG. 6 is a front sectional view of a throttle valve support portion of the butterfly type throttle valve carburetor.

【図7】同蝶型絞り弁式気化器の空気通路の左側面断面
図である。
FIG. 7 is a left side sectional view of an air passage of the butterfly type throttle valve carburetor.

【図8】本発明の第2実施例に係る蝶型絞り弁式気化器
の平面断面図である。
FIG. 8 is a plan sectional view of a butterfly type throttle valve carburetor according to a second embodiment of the present invention.

【図9】同蝶型絞り弁式気化器の混合気通路の左側面断
面図である。
FIG. 9 is a left side sectional view of a mixture passage of the butterfly type throttle valve carburetor.

【図10】同蝶型絞り弁式気化器の空気通路の左側面断
面図である。
FIG. 10 is a left side sectional view of an air passage of the butterfly type throttle valve carburetor.

【図11】混合気絞り弁の弁軸と空気絞り弁の弁軸との
連動連結機構を示す正面断面図である。
FIG. 11 is a front cross-sectional view showing an interlocking connection mechanism between the valve shaft of the mixture throttle valve and the valve shaft of the air throttle valve.

【図12】混合気絞り弁の弁軸と空気絞り弁の弁軸との
連動連結機構を示す正面断面図である。
FIG. 12 is a front sectional view showing an interlocking connection mechanism between the valve shaft of the mixture throttle valve and the valve shaft of the air throttle valve.

【図13】混合気絞り弁の弁軸と空気絞り弁の弁軸との
連動連結機構を分解して示す斜視図である。
FIG. 13 is an exploded perspective view showing an interlocking connection mechanism between a valve shaft of a mixture throttle valve and a valve shaft of an air throttle valve.

【図14】本発明の第3実施例に係る蝶型絞り弁式気化
器の正面断面図である。
FIG. 14 is a front sectional view of a butterfly throttle valve type carburetor according to a third embodiment of the present invention.

【図15】同蝶型絞り弁式気化器の平面断面図である。FIG. 15 is a plan sectional view of the butterfly type throttle valve carburetor.

【図16】混合気絞り弁の弁軸と空気絞り弁の弁軸との
連動連結機構を示す正面断面図である。
FIG. 16 is a front sectional view showing an interlocking connection mechanism between the valve shaft of the mixture throttle valve and the valve shaft of the air throttle valve.

【図17】混合気絞り弁の弁軸と空気絞り弁の弁軸との
連動連結機構を分解して示す斜視図である。
FIG. 17 is an exploded perspective view showing an interlocking connection mechanism between the valve shaft of the mixture throttle valve and the valve shaft of the air throttle valve.

【符号の説明】[Explanation of symbols]

1:機関 2:シリンダ 2a:点火栓 3:クランク
室 4:ピストン 5:排気口 6:掃気通路 7:燃
焼室 8:逆止弁 8a:逆止弁 9:空気通路 9a:混合気通路 10:連接棒 11:腕 12:ク
ランク軸 13:断熱管 14:通路 15:通路 1
6:燃料ポンプ 17:膜 18:カバー板 19:ケース 20:混合気絞り弁 21:チヨーク弁
21a:通孔 22:混合気通路 22a:ベンチユ
リ部 23:カバー板 24:膜 25:気化器本体
26:ボルト挿通孔 27:高速燃料噴孔 28:低速
燃料噴孔 30:弁軸 30a:ばね 31:弁軸 3
2:レバー 32a:折曲片 33:レバー 33a:
切欠 34:始動レバー 34a:折曲片 36:空気
制限部材 36a:円弧壁 40:空気絞り弁 42:空気通路
44:脈動圧室 45:ポンプ室 46:定圧燃料室
47:大気室 50:弁軸 51:ばね 52:レバー
61:連動連結機構 62:溝 63:突条 67:
従動ピン 68:押棒 73:ピン 74:ばね
1: Engine 2: Cylinder 2a: Spark plug 3: Crank chamber 4: Piston 5: Exhaust port 6: Scavenging passage 7: Combustion chamber 8: Check valve 8a: Check valve 9: Air passage 9a: Mixture passage 10: Connecting rod 11: Arm 12: Crankshaft 13: Insulation pipe 14: Passage 15: Passage 1
6: Fuel pump 17: Membrane 18: Cover plate 19: Case 20: Mixture throttle valve 21: Chiyoke valve 21a: Through hole 22: Mixture passage 22a: Bench lily part 23: Cover plate 24: Membrane 25: Vaporizer body
26: Bolt insertion hole 27: High-speed fuel injection hole 28: Low-speed fuel injection hole 30: Valve shaft 30a: Spring 31: Valve shaft 3
2: Lever 32a: Bent piece 33: Lever 33a:
Notch 34: Starting lever 34a: Bending piece 36: Air restriction member 36a: Arc wall 40: Air throttle valve 42: Air passage
44: Pulsating pressure chamber 45: Pump chamber 46: Constant pressure fuel chamber
47: Atmosphere chamber 50: Valve shaft 51: Spring 52: Lever 61: Interlocking connection mechanism 62: Groove 63: Projection 67:
Driven pin 68: Push rod 73: Pin 74: Spring

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI テーマコート゛(参考) F02M 1/02 F02M 1/02 A 3/06 3/06 A 11/10 11/10 17/34 17/34 E 19/00 19/00 G P R Fターム(参考) 3G006 AA01 AG01 BA01 BA02 3G065 AA02 EA08 EA11 FA05 HA03 KA05 KA23 KA32 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) F02M 1/02 F02M 1/02 A 3/06 3/06 A 11/10 11/10 17/34 17 / 34 E 19/00 19/00 GP R F term (reference) 3G006 AA01 AG01 BA01 BA02 3G065 AA02 EA08 EA11 FA05 HA03 KA05 KA23 KA32

Claims (8)

【特許請求の範囲】[Claims] 【請求項1】気化器本体を横貫する混合気通路と空気通
路を気化器本体に左右平行に配設し、両方の通路を横切
る弁軸にそれぞれ混合気絞り弁と空気絞り弁を支持し、
混合気絞り弁が全閉位置から所定開度だけ回転しても空
気通路の空気を制限する空気制限部材を空気通路の出口
部に嵌合し、気化器本体の上部に燃料ポンプを設け、気
化器本体の下部に定圧燃料供給機構を設け、気化器取付
用ボルト挿通孔を混合気通路と空気通路の間に設けたこ
とを特徴とする、層状掃気内燃機関用蝶型絞り弁式気化
器。
1. An air-fuel mixture passage and an air passage that pass through the carburetor main body are arranged in parallel to the carburetor main body, and the air-fuel mixture throttle valve and the air throttle valve are supported by valve shafts that traverse both passages, respectively.
An air restricting member that restricts the air in the air passage even if the mixture throttle valve rotates from the fully closed position by a predetermined degree is fitted to the outlet of the air passage, and a fuel pump is installed above the carburetor body to vaporize the air. A butterfly-type throttle valve carburetor for a stratified scavenging internal combustion engine, characterized in that a constant pressure fuel supply mechanism is provided in the lower part of the main body of the vessel, and a carburetor mounting bolt insertion hole is provided between the mixture passage and the air passage.
【請求項2】上下1対の気化器取付用ボルト挿通孔を混
合気通路と空気通路の間に配設した、請求項1に記載の
層状掃気内燃機関用蝶型絞り弁式気化器。
2. A butterfly type throttle valve type carburetor for a stratified scavenging internal combustion engine according to claim 1, wherein a pair of upper and lower carburetor mounting bolt insertion holes are arranged between the air-fuel mixture passage and the air passage.
【請求項3】混合気絞り弁の弁軸と空気絞り弁の弁軸を
別体に構成し、各弁軸と気化器本体との間に戻しばねを
係止し、空気絞り弁の全閉時の傾斜角度を混合気絞り弁
の全閉時の傾斜角度よりも大きくした、請求項1に記載
の層状掃気内燃機関用蝶型絞り弁式気化器。
3. A valve shaft of the air-fuel mixture throttle valve and a valve shaft of the air throttle valve are separately configured, and a return spring is locked between each valve shaft and the carburetor body to fully close the air throttle valve. The butterfly-type throttle valve carburetor for a stratified scavenging internal combustion engine according to claim 1, wherein the inclination angle at time is larger than the inclination angle when the mixture throttle valve is fully closed.
【請求項4】混合気絞り弁の弁軸と空気絞り弁の弁軸を
別体にかつ互いに偏倚して配設し、各弁軸に各絞り弁を
閉位置へ回転付勢する戻しばねをそれぞれ備え、各弁軸
の相対向する内端部を所定の遊回動量を存して連動回動
可能に連結した、請求項1に記載の層状掃気内燃機関用
蝶型絞り弁式気化器。
4. A return spring for arranging the valve shaft of the air-fuel mixture throttle valve and the valve shaft of the air throttle valve separately and offset from each other, each valve shaft rotatingly urging each throttle valve to a closed position. The butterfly-type throttle valve carburetor for a stratified scavenging internal combustion engine according to claim 1, wherein the inner end portions of the respective valve shafts, which are respectively opposed to each other, are connected so as to be interlocked with each other with a predetermined amount of free rotation.
【請求項5】空気絞り弁の弁軸を混合気絞り弁の弁軸よ
りも空気通路の上流側に配設した、請求項4に記載の層
状掃気内燃機関用蝶型絞り弁式気化器。
5. A butterfly type throttle valve carburetor for a stratified scavenging internal combustion engine according to claim 4, wherein the valve shaft of the air throttle valve is arranged upstream of the valve shaft of the mixture throttle valve in the air passage.
【請求項6】混合気絞り弁の弁軸と空気絞り弁の弁軸と
の連動連結機構は、気化器本体の混合気通路と空気通路
の間のくぼみに、気化器を内燃機関に取り付けた時外部
から遮断されるように配設した、請求項1に記載の層状
掃気内燃機関用蝶型絞り弁式気化器。
6. The interlocking coupling mechanism between the valve shaft of the mixture throttle valve and the valve shaft of the air throttle valve has a carburetor attached to the internal combustion engine in a recess between the mixture passage and the air passage of the carburetor body. The butterfly throttle valve carburetor for a stratified scavenging internal combustion engine according to claim 1, wherein the butterfly carburetor is arranged so as to be shut off from the outside at the time.
【請求項7】混合気絞り弁の弁軸の内端部にL字形の押
棒を設け、空気絞り弁の弁軸の内端部に径方向の従動ピ
ンを設け、混合気絞り弁の弁軸は空気絞り弁の弁軸より
も回転半径が大きく、混合気絞り弁の全閉位置から所定
開度までは混合気絞り弁のみが回転し、混合気絞り弁が
所定開度を超えると混合気絞り弁と一緒に空気絞り弁が
全開位置まで回転する、請求項1に記載の層状掃気内燃
機関用蝶型絞り弁式気化器。
7. A valve shaft of an air-fuel mixture throttle valve, wherein an L-shaped push rod is provided at the inner end portion of the valve shaft of the air-fuel mixture throttle valve, and a radial driven pin is provided at the inner end portion of the valve shaft of the air throttle valve. Has a larger radius of gyration than the valve shaft of the air throttle valve, and only the air-fuel mixture throttle valve rotates from the fully closed position of the air-fuel mixture throttle valve to a predetermined opening, and when the air-fuel mixture throttle valve exceeds the predetermined opening, the air-fuel mixture The butterfly throttle valve carburetor for a stratified scavenging internal combustion engine according to claim 1, wherein the air throttle valve rotates together with the throttle valve to a fully open position.
【請求項8】混合気通路と空気通路とを左右平行に配設
し、混合気通路の入口部に始動装置としてのチヨーク弁
を備え、チヨーク弁を全閉位置にするとチヨーク弁と連
動して混合気絞り弁がフアストアイドル位置に開く、請
求項1に記載の層状掃気内燃機関用蝶型絞り弁式気化
器。
8. A mixture passage and an air passage are arranged in parallel with each other in the left-right direction, a chioke valve as a starting device is provided at an inlet portion of the mixture passage, and when the chioke valve is in a fully closed position, it interlocks with the chioke valve. The butterfly throttle valve carburetor for a stratified scavenging internal combustion engine according to claim 1, wherein the mixture throttle valve opens to a fast idle position.
JP2002041411A 2002-02-19 2002-02-19 Butterfly throttle valve type carburetor for stratified scavenging internal combustion engine Pending JP2003239807A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002041411A JP2003239807A (en) 2002-02-19 2002-02-19 Butterfly throttle valve type carburetor for stratified scavenging internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002041411A JP2003239807A (en) 2002-02-19 2002-02-19 Butterfly throttle valve type carburetor for stratified scavenging internal combustion engine

Publications (1)

Publication Number Publication Date
JP2003239807A true JP2003239807A (en) 2003-08-27

Family

ID=27781839

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002041411A Pending JP2003239807A (en) 2002-02-19 2002-02-19 Butterfly throttle valve type carburetor for stratified scavenging internal combustion engine

Country Status (1)

Country Link
JP (1) JP2003239807A (en)

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JP2006144798A (en) * 2004-11-20 2006-06-08 Andreas Stihl Ag & Co Kg Two-cycle engine
JP2008111363A (en) * 2006-10-30 2008-05-15 Husqvarna Zenoah Co Ltd Carburetor
JP2012112337A (en) * 2010-11-26 2012-06-14 Honda Motor Co Ltd Fuel supply system of internal combustion engine
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005009495A (en) * 2003-06-20 2005-01-13 Inst Fr Petrole Indirect injection internal combustion supercharged engine in which combustion gas is scavenged, and method of supplying supercharged air to the engine
JP4596417B2 (en) * 2003-06-20 2010-12-08 イエフペ エネルジ ヌヴェル Indirect injection supercharged internal combustion engine for scavenging combustion gas and method for supplying supercharged air to the engine
JP2006144798A (en) * 2004-11-20 2006-06-08 Andreas Stihl Ag & Co Kg Two-cycle engine
JP2008111363A (en) * 2006-10-30 2008-05-15 Husqvarna Zenoah Co Ltd Carburetor
JP2013537593A (en) * 2010-08-20 2013-10-03 ハスクバーナ・ゼノア株式会社 Air supply device for 2-stroke engine
JP2012112337A (en) * 2010-11-26 2012-06-14 Honda Motor Co Ltd Fuel supply system of internal combustion engine
JP2014031794A (en) * 2013-10-18 2014-02-20 Kawasaki Heavy Ind Ltd Two-cycle engine
JP2014111942A (en) * 2014-03-20 2014-06-19 Husqvarna Zenoah Co Ltd Carburetor
CN108317013A (en) * 2018-03-08 2018-07-24 东风商用车有限公司 Engine exhaust brake valve
CN108317013B (en) * 2018-03-08 2024-01-02 东风商用车有限公司 Exhaust brake valve of engine

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