JPS585424A - Crank chamber compression 2-cycle internal combustion engine - Google Patents
Crank chamber compression 2-cycle internal combustion engineInfo
- Publication number
- JPS585424A JPS585424A JP10367781A JP10367781A JPS585424A JP S585424 A JPS585424 A JP S585424A JP 10367781 A JP10367781 A JP 10367781A JP 10367781 A JP10367781 A JP 10367781A JP S585424 A JPS585424 A JP S585424A
- Authority
- JP
- Japan
- Prior art keywords
- scavenging
- hole
- air
- sub
- 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
Links
- 230000006835 compression Effects 0.000 title claims description 3
- 238000007906 compression Methods 0.000 title claims description 3
- 238000002485 combustion reaction Methods 0.000 title abstract description 11
- 230000002000 scavenging effect Effects 0.000 claims abstract description 52
- 239000000203 mixture Substances 0.000 claims abstract description 23
- 239000000446 fuel Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 5
- 239000000567 combustion gas Substances 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000007664 blowing Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
- F02B25/20—Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports not provided for in, or of interest apart from, subgroups F02B25/02 - F02B25/18
- F02B25/22—Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports not provided for in, or of interest apart from, subgroups F02B25/02 - F02B25/18 by forming air cushion between charge and combustion residues
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はタランクケース圧縮２！イクル機関の掃気方式
に関する。[Detailed Description of the Invention] The present invention provides Tarank Case Compression 2! Concerning the scavenging method for cycle engines.
本発明は掃気のシリンダへの層状掃気を行なうことによ
って、燃料の排気への炊き抜けを極力低減さ曹、熱効率
の向上と排気浄化とを同時に達成することを目的とする
。An object of the present invention is to simultaneously achieve improvement in thermal efficiency and purification of the exhaust gas by minimizing the amount of fuel that is absorbed into the exhaust gas by performing stratified scavenging of the scavenging air into the cylinder.
従来、２＋イタル機関の層状掃気の考案は多数提案され
ており、その中で掃気通路に空気供給通路を設けて掃気
通路に空気を吸引し、これを燃料混合気に先立ってシリ
ンダ内に供給する試みも種々なされているが実際に効果
をあげるに到っていない。（例えば、実開昭５２−１９
１２ 、実開昭１５２−１９１５ ）本発明は多くの解
析と実験によって従来提案されている考案の欠点を解明
することによって達成されたもので、本発明によって十
分な層状掃気が得られる。In the past, many ideas for stratified scavenging for 2+ Ital engines have been proposed, including one in which an air supply passage is provided in the scavenging passage to suck air into the scavenging passage, and this is supplied into the cylinder prior to the fuel mixture. Various attempts have been made, but none have actually been effective. (For example,
12, U.S. Patent Publication No. 152-1915) The present invention was achieved by elucidating the drawbacks of conventionally proposed devices through numerous analyzes and experiments, and it is possible to obtain sufficient stratified scavenging by the present invention.
本発明の特徴は、掃気孔および掃気通路を燃料空気の混
合気を供給する主掃気通路および主婦気孔と空気のみを
供給する副掃気通路および副掃気孔を有し、千れｆれの
掃気通路の長さおよびその容積を最適値に遣会し、主！
４気孔の開口に先立って副掃気孔を開口し、副掃気の空
気量は主掃気の燃料混合気量に応じて最適に制御すると
ころにあるＯ
本発明では主掃気通路と副掃気通路が分離されているた
めに副掃気通路中の掃気空気中の燃料成分はほとんど無
視しうる濃度とすることが可能となった。A feature of the present invention is that the scavenging holes and scavenging passages include a main scavenging passage that supplies a mixture of fuel and air, and a sub-scavenging passage and sub-scavenging holes that supply only air. Adjust the length and volume to the optimum value, Lord!
The sub-scavenging air hole is opened prior to the opening of the four air holes, and the air amount of the sub-scavenging air is optimally controlled according to the fuel mixture amount of the main scavenging air. In the present invention, the main scavenging passage and the sub-scavenging passage are separated. Because of this, it has become possible to reduce the concentration of fuel components in the scavenging air in the sub-scavenging passage to an almost negligible concentration.
更に副掃気孔が主掃気孔に先立って開口するために排気
孔開口直後のプ四−ダウン中にはＩＩＪＩＩ気孔から空
気のみがシリンダ内に流入し、シリンダ内の燃焼ガスを
排気孔に押し出すと共に掃気空気の一部も排気孔から流
出し、しかる後に主掃気孔より燃料混合気を供給するた
めに燃料混合気の吹會抜けを防ぐことができる。Furthermore, since the sub-scavenging hole opens before the main scavenging hole, only air flows into the cylinder from the IIJII hole during the four-down period immediately after the exhaust hole opens, pushing out the combustion gas in the cylinder to the exhaust hole. A portion of the scavenging air also flows out from the exhaust hole, and the fuel mixture is then supplied from the main scavenging hole, thereby preventing the fuel mixture from blowing through.
本発明の実施例につき図面を参照して説明する。Embodiments of the present invention will be described with reference to the drawings.
図１には２伊イクル内燃機関が示されている。FIG. 1 shows a two-stroke internal combustion engine.
ピストン（勾はシリンダ（１）内を上下に往復運動し、
その際ビス）ン（５）は吸気孔（１２）、主掃気孔（５
）、副掃気孔（６）および排気孔（７）をそれｆれ開閉
する。The piston moves up and down in the cylinder (1),
At that time, the screw (5) is the intake hole (12), the main scavenging hole (5).
), the sub-scavenging hole (6) and the exhaust hole (7) are opened and closed accordingly.
図１はピストン（３）が下死点の位置で示されている。FIG. 1 shows the piston (3) in its bottom dead center position.
ビスシン（！りが図１の下死点より上死点方向に移動す
るとクランク室（１０）は負圧となるために空気絞り弁
（１６） ％逆止弁（１！ｌ）％副掃気通路（１１）を
それｆれ流通し、空気が副掃気通路（１１）内に吸入さ
れる。吸気孔（１２）がクランク室（１０）に通ずると
負圧によって混合気（１４） 、混合気絞り弁（１５）
をそれでれ流通し、クランク室（１０）に燃料と空気の
混合気が吸入され、そこに保有される・
５一
つぎにピストン（５）が上死点位置から下向きの行程を
進む場合、シリンダ（１）と燃焼室（乃内を見ると先ず
排気孔（７）が開き既燃ガスが排出され、続いて一掃気
孔（６）が関いて副掃気通路（１１）内の空気がクラン
ク室（１０）の圧力によってシリンダ（１）内に押し出
され掃気を行ない、やや連れて主婦気孔（５）が開きク
ランクｉｉ！ （１０）に保有されていた混合気が主掃
気通路（８）を通って主婦気孔（５）よりシリンダ（１
）に流入し、燃焼に備わる。When the screw (!) moves from the bottom dead center to the top dead center in Fig. 1, the crank chamber (10) becomes negative pressure, so the air throttle valve (16) % check valve (1! l) % auxiliary scavenging passage (11), and the air is sucked into the auxiliary scavenging passage (11).When the intake hole (12) communicates with the crank chamber (10), the air-fuel mixture (14) is throttled by negative pressure. Valve (15)
The mixture of fuel and air is sucked into the crank chamber (10) and held there. (1) and the combustion chamber (inside), first the exhaust hole (7) opens and burnt gas is discharged, then the cleaning hole (6) engages and the air in the sub-scavenging passage (11) is transferred to the crank chamber ( 10) is pushed into the cylinder (1) to perform scavenging, and the house air pore (5) opens a little later, allowing the mixture held in the crank ii! (10) to pass through the main scavenging passage (8). Cylinder (1) from housewife stomata (5)
) and prepares for combustion.
逆止弁（１ｓ）は副掃気通路（１１）が負圧の場合のみ
空気を吸入し、逆流を防止する作用をする。The check valve (1s) takes in air only when the sub-scavenging passage (11) has a negative pressure, and functions to prevent backflow.
上記のように本発明によれば副掃気通路（１１）は空気
絞り弁（１６）および逆止弁（１！ｌ）が開口している
状態では副掃気通路（１１）内にある気体をクランク室
（１０）方向に押し戻しながら１シリンダ（１）に近い
方から空気が充填されることとなる・即ち、副掃気通路
（１１）と主掃気通路（旬を分離することにより副掃気
通路（１１）壁面への液体燃料の付着を防ぐことができ
、掃気用空気中の燃料を。As described above, according to the present invention, the sub-scavenging passage (11) cranks the gas in the sub-scavenging passage (11) when the air throttle valve (16) and the check valve (1!l) are open. While pushing back toward the chamber (10), air is filled from the side closer to the first cylinder (1).In other words, by separating the sub-scavenging passage (11) from the main scavenging passage (1), the sub-scavenging passage (11) ) Can prevent liquid fuel from adhering to the wall surface, scavenging fuel in the air.
着しく低減することが可能となった。さらに掃気に必要
な空気量を確保するために、副掃気通路（１１）の長さ
をピストン（５）の行程の２倍以上とし副掃気孔（６）
と副掃気通路（１１）の会計容積をビス）ン（５）の行
程容積の１５−以上とし、主掃気通路（旬との適合を計
ることと、混合気絞り弁（１５）に連動した空気絞り弁
（１６）により空気量を最適に制御することによって安
走した燃焼を確保することができる。図１の例示ではク
ランクケース（４）の主掃気通路入口（ηはクランク室
（１０）の最下部に設けであるが、これは本発明を活性
熱雰囲気燃焼機関に適用した場合であり１この場合には
本発明の効果と活性熱雰囲気燃焼の効果との両方が得ら
れることになる。It has become possible to significantly reduce the noise. Furthermore, in order to secure the amount of air necessary for scavenging, the length of the sub-scavenging passage (11) is made to be at least twice the stroke of the piston (5), and the sub-scavenging hole (6)
The accounting volume of the sub-scavenging passage (11) is set to be 15 times or more of the stroke volume of the cylinder (5), and the main scavenging passage (main scavenging passage) is designed to match the volume of the cylinder (5), and the air flow linked to the mixture throttle valve (15) is Safe combustion can be ensured by optimally controlling the amount of air using the throttle valve (16). In the example shown in FIG. Although it is provided at the bottom, this is a case where the present invention is applied to an active heat atmosphere combustion engine, and in this case, both the effects of the present invention and the effects of active heat atmosphere combustion can be obtained.
従来の２サイクル機関においてはピストン（３）が上死
点の位置において掃気孔がクランク室（１０）に開口す
るものが多（見られるが、上記の構造は本発明の効果を
蕾しく減することになる。したがってビスシン（＋９が
上死点位置において、副掃気孔（６）はクランク室（１
０）に開口しないことが本発明の重要な構成要素の１つ
である。この場金主掃気孔（５）はピストン（３）の上
死点位置にてクランク富（１０）に開口しても本発明の
効果を妨げない。In many conventional two-stroke engines, the scavenging hole opens into the crank chamber (10) when the piston (3) is at the top dead center (although this structure greatly reduces the effect of the present invention). Therefore, when Biscine (+9) is at the top dead center position, the sub-scavenging hole (6) is located at the crank chamber (1
0) is one of the important components of the present invention. Even if the main scavenging hole (5) opens toward the crankshaft (10) at the top dead center position of the piston (3), the effects of the present invention will not be impaired.
図１は主掃気通路（８）を排気孔（７）側に、副掃気通
路（１１）を吸気孔（１２）側に配列し、混合気絞り弁
（１５）と空気絞り弁（１６）を有する一体型の混合気
（１４）を使用した構成を示している。In Figure 1, the main scavenging passage (8) is arranged on the exhaust hole (7) side, the auxiliary scavenging passage (11) is arranged on the intake hole (12) side, and the mixture throttle valve (15) and air throttle valve (16) are arranged. A configuration using an integrated air-fuel mixture (14) is shown.
また図２は主掃気通路（８）を吸気孔（１２）側に１副
掃気通路（１１）を排気孔（７）側に配列し、混合気絞
り弁（１５） と空気絞り弁（１６）をリンク等で連動
する構成を示している。Also, in Figure 2, the main scavenging passage (8) is arranged on the intake hole (12) side, the 1st sub-scavenging passage (11) is arranged on the exhaust hole (7) side, and the mixture throttle valve (15) and air throttle valve (16) are arranged. This shows a configuration in which the two are interlocked by links, etc.
また実施例においては＠気孔（１２）はビスシン（５）
によって開閉される構成であるが、吸気メート開閉方式
は上記方式に回走されることなく、例えば薄板弁（リー
フ弁）、田−タリ弁、クランク弁方式など、いずれを適
用しても本発明の効果を阻害することはない。In addition, in the example, @stoma (12) is biscine (5)
However, the intake mate opening/closing method is not rotated by the above method, and regardless of whether a thin plate valve (leaf valve), tabillary valve, or crank valve method is applied, the present invention will be effective. does not impede the effect of
本発明は値上の如く構成し、主掃気に先って副掃気孔よ
り空気のみによる掃気を行ない、しかる後に主掃気孔よ
り混合気をシリンダ内に導入することによって、液体燃
料の使用においても混合気の排気孔への吹き抜けを防止
することができ、掃気用空気量と混合気量を最適状態に
保つことによって、燃焼の安定化を計ることが可能とな
り、熱効率の向上と排気浄化を同時に達成することがで
きる・The present invention is configured as described above, and scavenging with only air is performed from the sub-scavenging hole prior to the main scavenging, and then the air-fuel mixture is introduced into the cylinder from the main scavenging hole, so that it can be used even when using liquid fuel. By preventing the air-fuel mixture from blowing into the exhaust hole, and by keeping the amount of scavenging air and air-fuel mixture in an optimal state, it is possible to stabilize combustion, improving thermal efficiency and purifying exhaust gas at the same time. can be achieved
図１および図２は本発明の実施例の縦断側面図である。
図において、（１）−シリンダ、（２）−燃焼室、（３
） −・ピストン％ （４） ！−・タランタケース、
（Ｓ）−・・主掃気孔、（＠−・副掃気孔、（乃−・排
気孔、（８）−・・主掃気通路、（９）・・・主掃気通
路入口、（１０）−・クランク富、（１１）・・・副掃
気通路、（１２）−吸気孔、（１！ｌ） −・・逆止弁
、（１４）−・混合気、（１５）−・混合気絞り弁、（
１６）・・・空気絞り弁を示す。1 and 2 are longitudinal sectional side views of an embodiment of the invention. In the figure, (1) - cylinder, (2) - combustion chamber, (3
) −・Piston% (4) ! −・Taranta case,
(S)--Main scavenging hole, (@--Sub-scavenging hole, (No--Exhaust hole, (8)--Main scavenging passage, (9)...Main scavenging passage entrance, (10)- - Crank wealth, (11) - Sub-scavenging passage, (12) - Intake hole, (1!l) - - Check valve, (14) - Mixture, (15) - Mixture throttle valve ,(
16)...Indicates an air throttle valve.
Claims (1)
気孔を有し、ピストン側壁により前記の排気孔、主掃気
孔および副掃気孔を開閉させると共にタランタ寵負圧に
より副掃気通路内に空気を吸引し、該空気を前記主掃気
孔の関口に先立って副掃気孔よりシリンダ内に供給する
クランク室圧縮２ｆイタル機関において、下死点におい
ても副掃気孔はピストン側壁によりタランク室に開口せ
ず、前記副掃気孔に接続した副掃気通路の長さをビスシ
ン行程の２倍以上とし、該副掃気孔および副掃気通路の
合計容積を行程容積の１５１１！以上に設計した構造を
特徴とする２ｆイクル機関の層状給気方法。・ （２） 前項「特許請求の範１１（１） Ｊにおいて
、該主掃気孔に接続した主掃気通路の取入口なりランク
ケースの最下部附近（機関を水平な地面に置いた場合、
地面に最も近い部分）に設魯九−掃気孔に接続した副掃
気通路の取入口を主掃気よりシリンダ側に設けた構造。 （５） 前記「特許請求の範囲（１） Ｊおよび「特
許請求の範囲（乃」において、験主婦気用空気および燃
料の混合気量ならびに該１１Ｊ１１気用空気量を制御す
る一体厘の混合器を有する構造。[Scope of Claims] (1) The cylinder side wall has an exhaust hole, a main scavenging hole, and a sub-scavenging hole, and the piston side wall opens and closes the exhaust hole, main scavenging hole, and sub-scavenging hole, and the taranta negative pressure In a crank chamber compression 2f engine that sucks air into the sub-scavenging passage and supplies the air into the cylinder from the sub-scavenging hole prior to the entrance of the main scavenging hole, the sub-scavenging hole is located on the side wall of the piston even at bottom dead center. Therefore, the length of the sub-scavenging passage that does not open into the tarrank chamber and is connected to the sub-scavenging hole is at least twice the length of the bisshin stroke, and the total volume of the sub-scavenging passage and the sub-scavenging passage is 1511 times the stroke volume! A stratified air supply method for a 2f cycle engine characterized by the structure designed above. - (2) In the preceding paragraph "Claim 11 (1) J," the intake of the main scavenging air passage connected to the main scavenging air hole or near the bottom of the rank case (when the engine is placed on a horizontal ground,
A structure in which the intake of the auxiliary scavenging passage connected to the scavenging air hole is located closer to the cylinder than the main scavenging air. (5) In the above-mentioned "Claim (1) J" and "Claim (no)", there is provided an integrated mixer for controlling the amount of mixture of air and fuel for the tester and the amount of air for said 11J11 air. A structure with
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10367781A JPS585424A (en) | 1981-07-02 | 1981-07-02 | Crank chamber compression 2-cycle internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10367781A JPS585424A (en) | 1981-07-02 | 1981-07-02 | Crank chamber compression 2-cycle internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS585424A true JPS585424A (en) | 1983-01-12 |
Family
ID=14360414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10367781A Pending JPS585424A (en) | 1981-07-02 | 1981-07-02 | Crank chamber compression 2-cycle internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS585424A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57143031A (en) * | 1981-01-29 | 1982-09-04 | Tsubuisuraa Ruudeii | Connector member for connecting plate like building material in releasable manner |
| JPS57148963A (en) * | 1981-01-30 | 1982-09-14 | Tmc Corp | Ski stopper |
| JPS58171341A (en) * | 1982-03-20 | 1983-10-08 | アジア金属工業株式会社 | Pull-top can |
| JPS63306226A (en) * | 1987-05-26 | 1988-12-14 | フオルクスウアーゲン・アクチエンゲゼルシヤフト | Mixture compression type two cycle internal combustion engine |
| WO1998017901A1 (en) * | 1996-10-17 | 1998-04-30 | Komatsu Zenoah Co. | Stratified scavenging two-cycle engine |
| EP0997623A1 (en) * | 1998-10-31 | 2000-05-03 | Guido Förster | Intake device for a two stroke internal combustion engine |
| EP0997621A1 (en) * | 1998-10-30 | 2000-05-03 | Komatsu Zenoah Co. | Stratified scavenging two-cycle engine |
| EP1048831A2 (en) | 1999-04-28 | 2000-11-02 | Mitsubishi Heavy Industries, Ltd. | Two-stroke cycle engine |
| EP1207291A1 (en) * | 2000-11-20 | 2002-05-22 | Blue Bird Industries Fabbrica Motori S.r.l. | Low pollution two-stroke engine, in particular for gardening machines |
| JP2003519748A (en) * | 2000-01-14 | 2003-06-24 | アクティエボラゲット エレクトロラックス | Two-stroke internal combustion engine |
| US6928996B2 (en) | 2002-07-03 | 2005-08-16 | Walbro Japan, Inc. | Stratified scavenging mechanism of a two-stroke engine |
| US7025021B1 (en) | 1999-01-19 | 2006-04-11 | Aktiebolaget Electrolux | Two-stroke internal combustion engine |
| US7104253B1 (en) | 2005-03-30 | 2006-09-12 | Walbro Engine Management, L.L.C. | Stratified scavenging carburetor |
| US7536982B2 (en) | 2002-10-11 | 2009-05-26 | Kawasaki Jukogyo Kabushiki Kaisha | Two-cycle combustion engine of air scavenging type |
| JP2012522179A (en) * | 2009-03-31 | 2012-09-20 | フスクバルナ アクティエボラーグ | 2-stroke internal combustion engine |
-
1981
- 1981-07-02 JP JP10367781A patent/JPS585424A/en active Pending
Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57143031A (en) * | 1981-01-29 | 1982-09-04 | Tsubuisuraa Ruudeii | Connector member for connecting plate like building material in releasable manner |
| JPS57148963A (en) * | 1981-01-30 | 1982-09-14 | Tmc Corp | Ski stopper |
| JPS58171341A (en) * | 1982-03-20 | 1983-10-08 | アジア金属工業株式会社 | Pull-top can |
| JPS63306226A (en) * | 1987-05-26 | 1988-12-14 | フオルクスウアーゲン・アクチエンゲゼルシヤフト | Mixture compression type two cycle internal combustion engine |
| WO1998017901A1 (en) * | 1996-10-17 | 1998-04-30 | Komatsu Zenoah Co. | Stratified scavenging two-cycle engine |
| EP0933514A1 (en) * | 1996-10-17 | 1999-08-04 | Komatsu Zenoah Co. | Stratified scavenging two-cycle engine |
| EP0933514A4 (en) * | 1996-10-17 | 2001-10-17 | Komatsu Zenoa Kk | Stratified scavenging two-cycle engine |
| EP0997621A1 (en) * | 1998-10-30 | 2000-05-03 | Komatsu Zenoah Co. | Stratified scavenging two-cycle engine |
| EP0997623A1 (en) * | 1998-10-31 | 2000-05-03 | Guido Förster | Intake device for a two stroke internal combustion engine |
| JP2012077756A (en) * | 1999-01-19 | 2012-04-19 | Husqvarna Ab | Two-stroke internal combustion engine |
| US7574984B2 (en) | 1999-01-19 | 2009-08-18 | Husqvarna Ab | Two-stroke internal combustion engine |
| US7025021B1 (en) | 1999-01-19 | 2006-04-11 | Aktiebolaget Electrolux | Two-stroke internal combustion engine |
| US6564761B2 (en) | 1999-04-28 | 2003-05-20 | Kazuyuki Uenoyama | Two-stroke cycle engine |
| EP1048831A3 (en) * | 1999-04-28 | 2001-12-19 | Mitsubishi Heavy Industries, Ltd. | Two-stroke cycle engine |
| EP1048831A2 (en) | 1999-04-28 | 2000-11-02 | Mitsubishi Heavy Industries, Ltd. | Two-stroke cycle engine |
| US6257179B1 (en) | 1999-04-28 | 2001-07-10 | Mitsubishi Heavy Industries, Ltd. | Two-stroke cycle engine |
| EP1508679A2 (en) * | 1999-04-28 | 2005-02-23 | Mitsubishi Heavy Industries, Ltd. | Two-stroke cycle engine |
| EP1508679A3 (en) * | 1999-04-28 | 2005-03-09 | Mitsubishi Heavy Industries, Ltd. | Two-stroke cycle engine |
| US7516725B2 (en) | 1999-04-28 | 2009-04-14 | Mitsubishi Heavy Industries, Ltd. | Two-stroke cycle engine |
| US6408805B2 (en) | 1999-04-28 | 2002-06-25 | Mitsubishi Heavy Industries, Ltd. | Two-stroke cycle engine |
| EP1739300A3 (en) * | 1999-04-28 | 2007-01-10 | Mitsubishi Heavy Industries, Ltd. | Two-stroke cycle engine |
| EP1739300A2 (en) * | 1999-04-28 | 2007-01-03 | Mitsubishi Heavy Industries, Ltd. | Two-stroke cycle engine |
| JP2003519748A (en) * | 2000-01-14 | 2003-06-24 | アクティエボラゲット エレクトロラックス | Two-stroke internal combustion engine |
| EP1207291A1 (en) * | 2000-11-20 | 2002-05-22 | Blue Bird Industries Fabbrica Motori S.r.l. | Low pollution two-stroke engine, in particular for gardening machines |
| US6928996B2 (en) | 2002-07-03 | 2005-08-16 | Walbro Japan, Inc. | Stratified scavenging mechanism of a two-stroke engine |
| US7536982B2 (en) | 2002-10-11 | 2009-05-26 | Kawasaki Jukogyo Kabushiki Kaisha | Two-cycle combustion engine of air scavenging type |
| US7104253B1 (en) | 2005-03-30 | 2006-09-12 | Walbro Engine Management, L.L.C. | Stratified scavenging carburetor |
| JP2012522179A (en) * | 2009-03-31 | 2012-09-20 | フスクバルナ アクティエボラーグ | 2-stroke internal combustion engine |
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