JPH06159070A - Exhaust controller of two-cycle engine - Google Patents
Exhaust controller of two-cycle engineInfo
- Publication number
- JPH06159070A JPH06159070A JP33539092A JP33539092A JPH06159070A JP H06159070 A JPH06159070 A JP H06159070A JP 33539092 A JP33539092 A JP 33539092A JP 33539092 A JP33539092 A JP 33539092A JP H06159070 A JPH06159070 A JP H06159070A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust control
- control member
- exhaust
- auxiliary
- main
- 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.)
- Granted
Links
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
- 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
- Characterised By The Charging Evacuation (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明はピストン自体が排気弁
として作用する２サイクルエンジンの排気制御装置に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust control system for a two-cycle engine in which a piston itself acts as an exhaust valve.
【０００２】[0002]
【従来の技術】従来より、２サイクルエンジンでは、ピ
ストンにより開閉される主排気ポートの実質的な形状
を、エンジンの回転数に応じて主排気制御部材によって
変化させることで、出力の向上を図った排気装置が知ら
れている（たとえば、実開平１−１２５８２２号公報、
同７６５１９号公報参照）。2. Description of the Related Art Conventionally, in a two-cycle engine, the substantial shape of a main exhaust port opened and closed by a piston is changed by a main exhaust control member according to the engine speed to improve the output. Exhaust device is known (for example, Japanese Utility Model Laid-Open No. 1-125822,
(See Japanese Patent No. 76519).
【０００３】一方、２サイクルエンジンでは、主排気通
路の他に補助排気通路を設け、この補助排気通路を補助
排気制御部材により開閉する排気装置が知られている
（たとえば、特開昭６３−２７２９１６号公報参照）。
この種の排気装置は、補助排気通路を低速時に閉止し高
速時に開放して、排気通路の断面積をエンジンの回転速
度に見合った面積にすることにより、高速時の出力を向
上させる。この種の補助排気制御部材と主排気制御部材
の両方を設けた排気装置では、両排気制御部材を互いに
連動させて、駆動源を１つにする場合が多い。On the other hand, in a two-cycle engine, an exhaust device is known in which an auxiliary exhaust passage is provided in addition to the main exhaust passage, and the auxiliary exhaust passage is opened and closed by an auxiliary exhaust control member (for example, Japanese Patent Laid-Open No. 63-272916). (See the official gazette).
In this type of exhaust system, the auxiliary exhaust passage is closed at low speed and opened at high speed, and the cross-sectional area of the exhaust passage is made to be an area corresponding to the rotation speed of the engine, thereby improving the output at high speed. In an exhaust system provided with both the auxiliary exhaust control member and the main exhaust control member of this type, both exhaust control members are often interlocked with each other to provide a single drive source.
【０００４】[0004]
【発明が解決しようとする課題】しかし、従来は、主排
気制御部材をスライドさせる一方で、補助排気制御部材
を回転させている。そのため、両排気制御部材を互い連
動させる駆動装置が複雑な構造になり易い。However, conventionally, while the main exhaust control member is slid, the auxiliary exhaust control member is rotated. Therefore, the drive device for interlocking the two exhaust control members is likely to have a complicated structure.
【０００５】この発明は、上記従来の課題に鑑みてなさ
れたもので、主排気制御部材および補助排気制御部材の
双方を１つの駆動源で駆動させる２サイクルエンジンの
排気制御装置において、駆動装置の構造を簡易な構造に
することを目的とする。The present invention has been made in view of the above-mentioned conventional problems, and is an exhaust control device for a two-cycle engine in which both the main exhaust control member and the auxiliary exhaust control member are driven by one drive source. The purpose is to make the structure simple.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、この発明は、主排気制御部材および補助排気制御部
材を各々スライド移動自在に設けるとともに、１つの駆
動源からの駆動力を上記両排気制御部材に伝達する伝達
部材を設けている。この場合、上記両排気制御部材の移
動ストロークを互いに異ならせるのが好ましい。In order to achieve the above object, the present invention provides a main exhaust control member and an auxiliary exhaust control member which are slidably movable, and a driving force from one drive source is applied to both of the above. A transmission member that transmits to the exhaust control member is provided. In this case, it is preferable that the movement strokes of the exhaust control members are different from each other.
【０００７】[0007]
【作用】この発明によれば、１つの駆動源から伝達部材
を介して駆動力を受ける両排気制御部材が、共に、スラ
イド移動自在に設けられているから、駆動力の伝達構造
が両排気制御部材について同様な構造になる。したがっ
て、駆動装置の構造を簡単な構造にすることができる。According to the present invention, since both exhaust control members which receive a driving force from one driving source via the transmission member are both slidably provided, the driving force transmission structure is controlled by both the exhaust controls. The members have the same structure. Therefore, the drive device can have a simple structure.
【０００８】[0008]
【実施例】以下、この発明の一実施例を図１ないし図７
にしたがって説明する。まず、主排気系について説明す
る。図１において、シリンダ１内には、主排気ポート２
を介して主排気通路３が連通している。上記主排気通路
３の上部には、シリンダ１に形成した収納孔４が開口し
ている。この収納孔４内には、主排気通路３からの排気
Ｇの状態を変化させる主排気制御部材５と、主ガイド部
材６とが収納されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
Follow the instructions below. First, the main exhaust system will be described. In FIG. 1, a main exhaust port 2 is provided inside a cylinder 1.
The main exhaust passage 3 communicates with each other. A storage hole 4 formed in the cylinder 1 is opened in the upper portion of the main exhaust passage 3. A main exhaust control member 5 that changes the state of the exhaust gas G from the main exhaust passage 3 and a main guide member 6 are stored in the storage hole 4.
【０００９】上記主排気制御部材５は、収納孔４にスラ
イド移動自在に設けられており、この収納孔４から主排
気通路３内にスライド移動して、図２（ａ）の一点鎖線
で示す主排気ポート２の近傍まで突出することにより、
排気Ｇのタイミングを遅らせて、排気Ｇの状態を変化さ
せるものである。一方、上記主ガイド部材６は、上記主
排気制御部材５の斜上面５ａを案内するものである。図
１の主排気制御部材５の斜下面５ｂは、収納孔４によっ
て案内される。上記主排気制御部材５は、図２（ａ）の
舌片状の制御部５ｃと軸部５ｄとが一体に形成されてい
る。図１の主排気制御部材５および主ガイド部材６の先
端面５ｅ，６ｅは、主排気通路３の内面に沿った形状に
なっており、主排気制御部材５が収納孔４に退避した際
には、主排気通路３の内面に滑らかに連なっている。The main exhaust control member 5 is slidably provided in the housing hole 4 and slides into the main exhaust passage 3 from the housing hole 4 and is shown by a chain line in FIG. By protruding to the vicinity of the main exhaust port 2,
The state of the exhaust gas G is changed by delaying the timing of the exhaust gas G. On the other hand, the main guide member 6 guides the inclined upper surface 5 a of the main exhaust control member 5. The inclined lower surface 5b of the main exhaust control member 5 of FIG. 1 is guided by the storage hole 4. The main exhaust control member 5 is integrally formed with a tongue-shaped control portion 5c and a shaft portion 5d shown in FIG. 2 (a). The tip surfaces 5e and 6e of the main exhaust control member 5 and the main guide member 6 in FIG. 1 are shaped along the inner surface of the main exhaust passage 3, and when the main exhaust control member 5 retracts into the storage hole 4. Are smoothly connected to the inner surface of the main exhaust passage 3.
【００１０】図２（ｂ）は収納孔４を斜め下方から見た
図である。この図に示すように、上記主排気制御部材５
と主ガイド部材６とは、横長の収納孔４の上下のほぼ中
央あたりで互いに接しており、主排気制御部材５の斜上
面５ａが収納孔４の全幅にわたって横に伸びている。上
記主排気制御部材５の断面形状は、シリンダ１の周方向
Ｒに長い横長の形状に設定されており、その両端部の上
面５ａ１が平坦な形状になっている。一方、この主排気
制御部材５は、図２（ｃ）に示すように、主排気ポート
２の近傍における形状が、主排気通路３の平面的な断面
形状とほぼ合致した形状に設定されている。なお、主排
気制御部材５には、一対のストッパ面５ｆ，５ｇが設け
られており、これらのストッパ面５ｆ，５ｇが、それぞ
れ、図１の主ガイド部材６の一対のストッパ面６ｆ，６
ｇに当接して、主排気制御部材５が位置決めされる。FIG. 2 (b) is a view of the storage hole 4 as seen obliquely from below. As shown in this figure, the main exhaust control member 5 is
The main guide member 6 and the main guide member 6 are in contact with each other at approximately the upper and lower centers of the horizontally long storage hole 4, and the inclined upper surface 5a of the main exhaust control member 5 extends laterally over the entire width of the storage hole 4. The cross-sectional shape of the main exhaust control member 5 is set to a horizontally long shape that is long in the circumferential direction R of the cylinder 1, and the upper surfaces 5a1 at both ends thereof are flat. On the other hand, as shown in FIG. 2 (c), the main exhaust control member 5 has a shape in the vicinity of the main exhaust port 2 that is substantially the same as the planar cross-sectional shape of the main exhaust passage 3. . The main exhaust control member 5 is provided with a pair of stopper surfaces 5f and 5g, and these stopper surfaces 5f and 5g respectively correspond to the pair of stopper surfaces 6f and 6f of the main guide member 6 of FIG.
The main exhaust control member 5 is positioned in contact with g.
【００１１】つぎに、補助排気系について説明する。図
３に示すように、上記シリンダ１内と主排気通路３との
間は、補助的な排気通路としての補助排気通路７によっ
て連結されている。補助排気通路７は一対設けられてお
り、図１のように、この補助排気通路７の上部には収納
孔８が開口している。この収納孔８内には、補助排気通
路７からの排気Ｇの状態を変化させる補助排気制御部材
９と、補助ガイド部材１０とが収納されている。上記補
助排気制御部材９は、収納孔８にスライド移動自在に設
けられており、この収納孔８から補助排気通路７内にス
ライド移動して、図４のように、補助排気ポート１１の
下部を開放した状態で、補助排気ポート１１の上部を閉
止するものである。一方、上記補助ガイド部材１０は、
補助排気制御部材９の斜上面９ａを案内するものであ
る。なお、主排気制御部材５と、補助排気制御部材９と
は、互いに平行にスライド移動自在に設けられている。Next, the auxiliary exhaust system will be described. As shown in FIG. 3, the inside of the cylinder 1 and the main exhaust passage 3 are connected by an auxiliary exhaust passage 7 as an auxiliary exhaust passage. A pair of auxiliary exhaust passages 7 are provided, and as shown in FIG. 1, a storage hole 8 is opened in the upper portion of the auxiliary exhaust passage 7. An auxiliary exhaust control member 9 for changing the state of the exhaust gas G from the auxiliary exhaust passage 7 and an auxiliary guide member 10 are housed in the housing hole 8. The auxiliary exhaust control member 9 is slidably provided in the storage hole 8 and slides into the auxiliary exhaust passage 7 from the storage hole 8 to move the lower part of the auxiliary exhaust port 11 as shown in FIG. The upper part of the auxiliary exhaust port 11 is closed in the opened state. On the other hand, the auxiliary guide member 10 is
The inclined upper surface 9a of the auxiliary exhaust control member 9 is guided. The main exhaust control member 5 and the auxiliary exhaust control member 9 are slidably provided in parallel with each other.
【００１２】図５（ａ）は、補助排気制御部材９および
補助ガイド部材１０を示す斜視図である。この図におい
て、上記補助ガイド部材１０と補助排気制御部材９の斜
上面９ａとの間には空間Ｓｓがあるが、この空間Ｓｓ
は、補助排気制御部材９および補助ガイド部材１０と図
３の補助排気通路７を形成する壁面１ａとに囲まれた袋
小路になっており、したがって、図４に示す低速時に
は、補助排気ポート１１の上部が閉止される。FIG. 5A is a perspective view showing the auxiliary exhaust control member 9 and the auxiliary guide member 10. In this figure, there is a space Ss between the auxiliary guide member 10 and the inclined upper surface 9a of the auxiliary exhaust control member 9.
Is a dead end surrounded by the auxiliary exhaust control member 9 and the auxiliary guide member 10 and the wall surface 1a forming the auxiliary exhaust passage 7 of FIG. 3, and therefore, at the low speed shown in FIG. The top is closed.
【００１３】上記補助ガイド部材１０は、先端部１０ａ
がシリンダ１の内面に沿った形状で、常時、補助排気ポ
ート１１の上部を閉塞しており、上記先端部１０ａに図
示しないピストンが摺接する。一方、図１の全開状態に
おいては、補助排気制御部材９および補助ガイド部材１
０の下面９ｅ，１０ｅが、補助排気通路７の壁面の一部
を構成している。The auxiliary guide member 10 has a tip portion 10a.
Has a shape along the inner surface of the cylinder 1 and always closes the upper portion of the auxiliary exhaust port 11, and a piston (not shown) makes sliding contact with the tip portion 10a. On the other hand, in the fully open state of FIG. 1, the auxiliary exhaust control member 9 and the auxiliary guide member 1
The lower surfaces 9e and 10e of 0 form part of the wall surface of the auxiliary exhaust passage 7.
【００１４】図５（ｂ）に明示するように、補助排気制
御部材９には、制御部９ｃと軸部９ｄとが一体に形成さ
れている。補助排気制御部材９には、一対のストッパ面
９ｆ，９ｇが設けられており、これらのストッパ面９
ｆ，９ｇが、それぞれ、図５（ａ）の補助ガイド部材１
０のストッパ面１０ｆ，１０ｇに当接して、補助排気制
御部材９が位置決めされる。なお、図１の主ガイド部材
６および補助ガイド部材１０は、ビス１３によってシリ
ンダ１に固定されている。As shown in FIG. 5B, the auxiliary exhaust control member 9 is integrally formed with a control portion 9c and a shaft portion 9d. The auxiliary exhaust control member 9 is provided with a pair of stopper surfaces 9f and 9g.
f and 9g are the auxiliary guide members 1 of FIG.
The auxiliary exhaust control member 9 is positioned by contacting the stopper surfaces 10f and 10g of No. 0. The main guide member 6 and the auxiliary guide member 10 in FIG. 1 are fixed to the cylinder 1 with screws 13.
【００１５】つぎに、図６および図７に示す駆動装置２
０について説明する。図６において、駆動装置２０は、
上記主排気制御部材５および補助排気制御部材９を、そ
れぞれ、主排気ポート２および補助排気ポート１１に近
接する位置まで移動させるものである。この駆動装置２
０は、駆動源であるモータ（図示せず）からの回転力が
伝達されるプーリ２１を有している。プーリ２１は、駆
動軸（伝達部材）２２に固定されており、上記モータの
回転力により、駆動軸２２を約40°〜50°程度正逆回転
させる。なお、上記駆動軸２２は、図７のシリンダ１お
よび図１のカバー１２に回転自在に軸支されている。Next, the drive unit 2 shown in FIG. 6 and FIG.
0 will be described. In FIG. 6, the drive device 20 is
The main exhaust control member 5 and the auxiliary exhaust control member 9 are moved to positions close to the main exhaust port 2 and the auxiliary exhaust port 11, respectively. This drive 2
Reference numeral 0 has a pulley 21 to which a rotational force from a motor (not shown) which is a drive source is transmitted. The pulley 21 is fixed to a drive shaft (transmission member) 22 and rotates the drive shaft 22 forward or backward by about 40 ° to 50 ° by the rotational force of the motor. The drive shaft 22 is rotatably supported by the cylinder 1 of FIG. 7 and the cover 12 of FIG.
【００１６】上記駆動軸２２には、Ｕ字状の切欠部２３
ａを有するアーム２３が、図７のように、一対設けられ
ている。このアーム２３の切欠部２３ａには、第１のピ
ン２４および第２のピン２５が挿入されて係合してい
る。上記第１のピン２４および第２のピン２５は、それ
ぞれ、主排気制御部材５のピン挿入孔５ｈおよび補助排
気制御部材９のピン挿入孔９ｈに挿通している。したが
って、図１の駆動軸２２およびアーム２３が矢印Ａ方向
に回転することにより、主排気制御部材５および補助排
気制御部材９が、それぞれ、主排気ポート２および補助
排気ポート１１に近接する位置まで移動する。つまり、
アーム２３は、１つの駆動源であるモータからの駆動力
を両排気制御部材５，９に伝達する。The drive shaft 22 has a U-shaped cutout 23.
A pair of arms 23 having a are provided as shown in FIG. 7. A first pin 24 and a second pin 25 are inserted into and engaged with the notch 23a of the arm 23. The first pin 24 and the second pin 25 are inserted into the pin insertion hole 5h of the main exhaust control member 5 and the pin insertion hole 9h of the auxiliary exhaust control member 9, respectively. Therefore, as the drive shaft 22 and the arm 23 in FIG. 1 rotate in the direction of arrow A, the main exhaust control member 5 and the auxiliary exhaust control member 9 reach positions near the main exhaust port 2 and the auxiliary exhaust port 11, respectively. Moving. That is,
The arm 23 transmits the driving force from the motor, which is one driving source, to both the exhaust control members 5 and 9.
【００１７】上記第１のピン２４は、第２のピン２５よ
りも、駆動軸２２に近い位置に設けられており、したが
って、主排気制御部材５の移動ストロークは、補助排気
制御部材９の移動ストロークよりも小さい。なお、主排
気制御部材５のピン挿通孔５ｈは、主排気制御部材５の
移動方向に長い長円形の孔になっている。The first pin 24 is provided closer to the drive shaft 22 than the second pin 25. Therefore, the movement stroke of the main exhaust control member 5 is the movement of the auxiliary exhaust control member 9. Smaller than stroke. The pin insertion hole 5h of the main exhaust control member 5 is an oval hole that is long in the moving direction of the main exhaust control member 5.
【００１８】つぎに、上記構成の動作の一例について説
明する。まず、エンジンの回転速度が小さい低速時に
は、アーム２３が図４に示す位置に保持されて、主排気
制御部材５および補助排気制御部材９がこの図に示す状
態に保持されている。したがって、低速時には、主排気
ポート２および補助排気ポート１１の上部が閉塞されて
おり、主排気ポート２および補助排気ポート１１の開放
のタイミングが遅くなる。Next, an example of the operation of the above configuration will be described. First, when the engine speed is low and low, the arm 23 is held at the position shown in FIG. 4, and the main exhaust control member 5 and the auxiliary exhaust control member 9 are held in the state shown in this figure. Therefore, at low speed, the upper portions of the main exhaust port 2 and the auxiliary exhaust port 11 are closed, and the timing of opening the main exhaust port 2 and the auxiliary exhaust port 11 is delayed.
【００１９】その後、エンジンの回転速度が所定速度に
なったとき、図示しないモータの回転で、プーリ２１
（図６）を介して、駆動軸２２およびアーム２３が矢印
Ｂ方向に回転する。この回転により、一対のピン２４，
２５が矢印Ｃ方向に移動するとともに、両排気制御部材
５，９は矢印Ｃ方向にスライド移動して、両排気ポート
２，１１から両収納孔４，８に退避する。これにより、
図１のように、両排気ポート２，１１が大きく開き、排
気のタイミングがエンジンの回転速度に見合った速いタ
イミングとなって、周知のように、高速時の出力が向上
する。Thereafter, when the rotation speed of the engine reaches a predetermined speed, the pulley 21 is rotated by the rotation of a motor (not shown).
The drive shaft 22 and the arm 23 rotate in the direction of arrow B via (FIG. 6). By this rotation, the pair of pins 24,
While 25 moves in the direction of arrow C, both exhaust control members 5 and 9 slide in the direction of arrow C to retract from both exhaust ports 2 and 11 to both storage holes 4 and 8. This allows
As shown in FIG. 1, both exhaust ports 2 and 11 are widely opened, and the exhaust timing becomes a fast timing commensurate with the engine rotation speed, and as is well known, the output at high speed improves.
【００２０】上記構成においては、図６に示すように、
両排気制御部材５，９を共にスライド移動自在に設けた
ので、両排気制御部材５，９を駆動させる駆動機構が同
様な構造になるので、駆動装置２０が簡単な構造にな
る。In the above structure, as shown in FIG.
Since both exhaust control members 5 and 9 are slidably provided, the drive mechanism for driving both exhaust control members 5 and 9 has the same structure, so that the drive device 20 has a simple structure.
【００２１】特に、この実施例では、両排気制御部材
５，９を互いにほぼ平行にスライド移動させることとし
たので、たとえば、１本の駆動軸２２に一対のアーム２
３を一体に形成し、このアーム２３に一対のピン２４，
２５を係合させるという極めて簡単な構造になる。In particular, in this embodiment, since the exhaust control members 5 and 9 are slid in parallel with each other, for example, one drive shaft 22 and the pair of arms 2 are provided.
3 are integrally formed, and a pair of pins 24,
It is a very simple structure of engaging 25.
【００２２】しかし、この発明では、必ずしも、補助排
気制御部材９と図６の主排気制御部材５とを平行な方向
にスライド移動させる必要はない。たとえば、補助排気
制御部材９を補助排気ポート１１からシリンダ１の径方
向に長く設けて、シリンダ１の径方向にスライド移動さ
せてもよい。また、図１のシリンダ１に対する補助排気
制御部材９の傾斜角度と主排気制御部材５の傾斜角度を
互いに異ならせてもよい。However, in the present invention, it is not always necessary to slide the auxiliary exhaust control member 9 and the main exhaust control member 5 of FIG. 6 in a parallel direction. For example, the auxiliary exhaust control member 9 may be extended from the auxiliary exhaust port 11 in the radial direction of the cylinder 1 and slidably moved in the radial direction of the cylinder 1. Further, the inclination angle of the auxiliary exhaust control member 9 and the inclination angle of the main exhaust control member 5 with respect to the cylinder 1 of FIG. 1 may be different from each other.
【００２３】ところで、この実施例では、たとえば、補
助排気制御部材９のストロークを、主排気制御部材５の
ストロークよりも大きく設定しているので、つまり、両
排気制御部材５，９のストロークを互いに異ならせてい
るから、各々の排気制御部材５，９に適切なストローク
となる。したがって、エンジンの出力の向上を図ること
ができる。By the way, in this embodiment, for example, the stroke of the auxiliary exhaust control member 9 is set larger than the stroke of the main exhaust control member 5, that is, the strokes of both the exhaust control members 5 and 9 are mutually made. Since they are different, the stroke is appropriate for each exhaust control member 5, 9. Therefore, the output of the engine can be improved.
【００２４】さらに、この実施例では、駆動装置２０の
駆動源としてモータ（図示せず）を用いているが、この
発明では、上記駆動装置２０を機械的な駆動装置とする
こともできる。なお、機械的な駆動装置としては、図示
しない、クランク軸に連結されたガバナの回転により、
クランク軸の回転速度が所定値以上になったときに、鋼
球が皿形の球面板の傾斜に沿って移動する周知の装置が
ある。（たとえば、特開昭６０−２４９６１４号公報参
照）。Further, in this embodiment, a motor (not shown) is used as a drive source of the drive unit 20, but in the present invention, the drive unit 20 may be a mechanical drive unit. In addition, as a mechanical drive device, by rotation of a governor connected to a crank shaft (not shown),
There is a known device in which a steel ball moves along the inclination of a dish-shaped spherical plate when the rotational speed of a crankshaft exceeds a predetermined value. (See, for example, JP-A-60-249614).
【００２５】また、上記実施例では、エンジンの回転数
に応じて主排気制御部材５を移動させたが、この発明で
は、エンジンの回転数の他にスロットル開度も加味し
て、両排気制御部材５，９の制御を行ってもよい。Further, in the above embodiment, the main exhaust control member 5 is moved in accordance with the engine speed. However, in the present invention, the throttle opening is taken into consideration in addition to the engine speed, and both exhaust control are performed. The members 5 and 9 may be controlled.
【００２６】[0026]
【発明の効果】以上説明したように、請求項１の発明に
よれば、１つの駆動源から伝達部材を介して駆動力を受
ける主排気制御部材および補助排気制御部材が、共に、
スライド移動自在に設けられているから、駆動力の伝達
構造が両排気制御部材について同様な構造になり得る。
したがって、駆動装置の構造を簡単な構造にすることが
できる。なお、両排気制御部材の移動ストロークを互い
に異ならせた場合は、両排気制御部材のストロークを共
に適切なストロークとすることができるから、エンジン
の出力の向上を図ることができる。As described above, according to the invention of claim 1, the main exhaust control member and the auxiliary exhaust control member that receive the driving force from one drive source via the transmission member are both
Since it is provided so as to be slidable, the drive force transmission structure can be the same for both exhaust control members.
Therefore, the drive device can have a simple structure. When the movement strokes of both exhaust control members are made different from each other, the strokes of both exhaust control members can be made appropriate strokes, so that the output of the engine can be improved.
【図１】この発明の一実施例を示す高速時におけるシリ
ンダの縦断面図である。FIG. 1 is a vertical sectional view of a cylinder at a high speed showing an embodiment of the present invention.
【図２】（ａ）は主排気制御部材と主ガイド部材を示す
斜視図、（ｂ）は両部材を収納孔から見た正面図、
（ｃ）は主排気制御部材を示すシリンダの平面断面図で
ある。FIG. 2 (a) is a perspective view showing a main exhaust control member and a main guide member, and FIG. 2 (b) is a front view of both members as viewed from a storage hole.
(C) is a plane sectional view of a cylinder showing a main exhaust control member.
【図３】主排気通路および補助排気通路を示すシリンダ
の平面断面図である。FIG. 3 is a plan sectional view of a cylinder showing a main exhaust passage and an auxiliary exhaust passage.
【図４】低速時におけるシリンダの縦断面図である。FIG. 4 is a vertical sectional view of a cylinder at a low speed.
【図５】（ａ）は補助排気制御部材および補助ガイド部
材を示す斜視図、（ｂ）は補助排気制御部材の斜視図で
ある。5A is a perspective view showing an auxiliary exhaust control member and an auxiliary guide member, and FIG. 5B is a perspective view of the auxiliary exhaust control member.
【図６】駆動装置を示す平面図である。FIG. 6 is a plan view showing a driving device.
【図７】同背面図である。FIG. 7 is a rear view of the same.
１…シリンダ、３…主排気通路、５…主排気制御部材、
７…補助排気通路、９…補助排気制御部材、２２…駆動
軸（伝達部材）。1 ... Cylinder, 3 ... Main exhaust passage, 5 ... Main exhaust control member,
7 ... Auxiliary exhaust passage, 9 ... Auxiliary exhaust control member, 22 ... Drive shaft (transmission member).
Claims (2)
記シリンダ内と上記主排気通路との間を補助的な排気通
路として連結する補助排気通路と、上記主排気通路から
の排気の状態を変化させる主排気制御部材と、上記補助
排気通路からの排気の状態を変化させる補助排気制御部
材とを備えた２サイクルエンジンの排気制御装置であっ
て、 上記両排気制御部材を各々スライド移動自在に設けると
ともに、１つの駆動源からの駆動力を上記両排気制御部
材に伝達する伝達部材を設けた２サイクルエンジンの排
気制御装置。1. A main exhaust passage communicating with the inside of a cylinder, an auxiliary exhaust passage connecting the inside of the cylinder and the main exhaust passage as an auxiliary exhaust passage, and a state of exhaust from the main exhaust passage. An exhaust control device for a two-cycle engine, comprising: a main exhaust control member to be changed and an auxiliary exhaust control member to change a state of exhaust from the auxiliary exhaust passage, wherein both the exhaust control members are slidably movable. An exhaust control device for a two-cycle engine, which is provided with a transmission member that transmits a driving force from one drive source to both the exhaust control members.
の移動ストロークを互いに異ならせた２サイクルエンジ
ンの排気制御装置。2. The exhaust control device for a two-cycle engine according to claim 1, wherein the moving strokes of the exhaust control members are different from each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33539092A JPH0791981B2 (en) | 1992-11-20 | 1992-11-20 | Exhaust control device for 2-cycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33539092A JPH0791981B2 (en) | 1992-11-20 | 1992-11-20 | Exhaust control device for 2-cycle engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06159070A true JPH06159070A (en) | 1994-06-07 |
| JPH0791981B2 JPH0791981B2 (en) | 1995-10-09 |
Family
ID=18288010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33539092A Expired - Lifetime JPH0791981B2 (en) | 1992-11-20 | 1992-11-20 | Exhaust control device for 2-cycle engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0791981B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1219873A1 (en) | 2000-12-29 | 2002-07-03 | Vernet S.A. | Crimped valve seal and manufacturing process for such a valve |
| AT511484A1 (en) * | 2011-06-07 | 2012-12-15 | Mahle Koenig Kommanditgesellschaft Gmbh & Co Kg | CYLINDER |
-
1992
- 1992-11-20 JP JP33539092A patent/JPH0791981B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1219873A1 (en) | 2000-12-29 | 2002-07-03 | Vernet S.A. | Crimped valve seal and manufacturing process for such a valve |
| FR2819035A1 (en) | 2000-12-29 | 2002-07-05 | Vernet Sa | SEALED VALVE AND METHOD FOR MANUFACTURING SUCH A VALVE |
| AT511484A1 (en) * | 2011-06-07 | 2012-12-15 | Mahle Koenig Kommanditgesellschaft Gmbh & Co Kg | CYLINDER |
| AT511484B1 (en) * | 2011-06-07 | 2013-06-15 | Mahle Koenig Kommanditgesellschaft Gmbh & Co Kg | CYLINDER |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0791981B2 (en) | 1995-10-09 |
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