JPH07293258A - Swirl controlling valve - Google Patents
Swirl controlling valveInfo
- Publication number
- JPH07293258A JPH07293258A JP6105914A JP10591494A JPH07293258A JP H07293258 A JPH07293258 A JP H07293258A JP 6105914 A JP6105914 A JP 6105914A JP 10591494 A JP10591494 A JP 10591494A JP H07293258 A JPH07293258 A JP H07293258A
- Authority
- JP
- Japan
- Prior art keywords
- valve plate
- valve
- opening
- swirl
- shaft
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1005—Details of the flap
- F02D9/102—Details of the flap the flap having movable parts fixed onto it
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明はエンジンの吸気マニホル
ドに設置されて低中速回転域で閉弁状態とされ燃焼室内
にスワールを発生させるが、高速回転域で全開状態とさ
れ要求空気量を確保させるように働くスワール制御弁に
関するものである。BACKGROUND OF THE INVENTION The present invention is installed in an intake manifold of an engine and is closed in a low to medium speed range to generate swirl in a combustion chamber. It relates to a swirl control valve that works to ensure.
【0002】[0002]
【従来の技術】自動車エンジンにおいて希薄混合気を燃
焼させることは、燃料経済性、排気対策に有効な手段の
一つであり、吸気量が少ない低中速回転域で燃焼室内に
スワールを発生させて燃焼速度を早めることにより希薄
混合気を失火させることなく燃焼させることができ、ま
たそのために排気再循環量を大幅に増量して燃料経済性
向上を計ることが可能となることはよく知られている技
術である。2. Description of the Related Art Combusting a lean air-fuel mixture in an automobile engine is one of the effective means for fuel economy and exhaust emission control. It produces swirl in the combustion chamber in the low and medium speed rotation range where the intake amount is small. It is well known that by increasing the combustion speed, it is possible to burn the lean air-fuel mixture without misfiring, and for that reason, it is possible to significantly increase the exhaust gas recirculation amount and improve fuel economy. Technology.
【0003】エンジンの燃焼室にスワールを発生させる
手段には、広く知られているように吸気マニホルドの各
枝管をそれぞれ二つに分けてその各一方に設置した制御
弁を開閉することによりもう一方を流れる空気で発生さ
せたスワールを制御するようにしたものと、枝管を分け
ることなく制御弁を設置してその弁板の切欠きなどから
なる開口部分を通過する空気でスワールを発生させると
ともに開閉動作によってスワールを制御するようにした
ものとがある。そして、制御弁は一般に特開昭54−9
9826号公報記載の技術に代表されるように、吸気マ
ニホルド負圧により作動するダイヤフラム式のアクチュ
エータで駆動され、且つ蝶形弁である。As is widely known, the means for generating swirl in the combustion chamber of an engine is divided into two branch pipes of the intake manifold, and a control valve installed in each one is opened and closed. One that controls the swirl generated by the air flowing through one side and another that installs a control valve without dividing the branch pipe and generates the swirl by the air passing through the opening part such as the notch of the valve plate In addition, there is one that controls the swirl by opening and closing operation. And, the control valve is generally disclosed in JP-A-54-9.
As represented by the technology described in Japanese Patent Publication No. 9826, it is a butterfly valve that is driven by a diaphragm actuator that operates by negative pressure in the intake manifold.
【0004】一方、近年により広範囲領域で希薄混合気
燃焼を行なわせることや、より大量の排気再循環を行な
わせることにより、燃料経済性、排気対策を更に有効な
らしめることが望まれており、そのためにこれらの領域
において制御弁の適正且つきめこまかい位置制御が必要
とされるようになった。On the other hand, in recent years, it has been desired to make the fuel economy and the exhaust gas countermeasure more effective by performing the lean air-fuel mixture combustion in a wider range and by performing the exhaust gas recirculation in a larger amount, Therefore, proper and detailed position control of the control valve is required in these areas.
【0005】その対策として、ダイヤフラム式のアクチ
ュエータに作用させる吸気マニホルド負圧をエンジン運
転状態に応じた信号で開閉する電磁弁で制御すること、
ステッピングモータをアクチュエータに用いてエンジン
要求空気量に応じ制御弁を無段階に開閉させること、な
どが考えられている。As a countermeasure, the intake manifold negative pressure acting on the diaphragm type actuator is controlled by a solenoid valve which opens and closes by a signal according to the engine operating state,
It has been considered to use a stepping motor as an actuator to open and close the control valve steplessly according to the required air amount of the engine.
【0006】しかしながら、このようにアクチュエータ
によって制御弁の位置制御性の改善を計っても、制御弁
は蝶形であるために開弁させたとき弁板の弁軸を挟んだ
両側に開口部分ができてしまい、そのために吸入空気の
流れに統一性のない乱れを生じて有効なスワールを適正
に生成させることが困難となる。However, even if the position controllability of the control valve is improved by the actuator as described above, since the control valve has a butterfly shape, when the valve is opened, the opening portions are formed on both sides of the valve shaft of the valve plate. As a result, it is difficult to properly generate an effective swirl due to non-uniform turbulence in the flow of intake air.
【0007】[0007]
【発明が解決しようとする課題】本発明が解決しようと
する課題は、エンジンの燃焼室に接続された吸気マニホ
ルドの各枝管に設置されてスワールを制御する制御弁は
蝶形であり、その弁板の弁軸を挟んだ両側に開口部分が
形成される構成であるため吸入空気の流れに統一性のな
い乱れを生じ、アクチュエータにより位置制御性の改善
を計ってもスワールそのものを適正に生成させることが
困難となって、広範囲領域で燃料経済性、排気対策を向
上させるという目的が達成できない、という点である。The problem to be solved by the present invention is that the control valve installed in each branch pipe of the intake manifold connected to the combustion chamber of the engine to control the swirl has a butterfly shape. Since the openings are formed on both sides of the valve shaft of the valve plate, non-uniform turbulence occurs in the flow of intake air, and the swirl itself is properly generated even if the position controllability is improved by the actuator. It is difficult to do so, and the purpose of improving fuel economy and exhaust emission measures in a wide range cannot be achieved.
【0008】[0008]
【課題を解決するための手段】本発明は前記課題を解決
し、開弁をはじめたとき吸入空気の流れに統一性のない
乱れを生じさせることがなく、従ってエンジン回転速度
に応じた適正なスワールを生成させることができて広範
囲領域での燃料経済性、排気対策の向上を実現できるス
ワール制御弁を提供することを目的とするものである。
即ち、本発明は吸気マニホルドの各枝管の吸気通路を横
切って配置された弁軸に、この弁軸を挟んだ両側を開閉
する主弁板を固着するとともに一側を開閉する副弁板を
回動可能且つ片持ち式に取付け、且つ主弁板の弁軸を挟
んだ二つの弁板部の内で開弁時に吸気通路上流側へ回動
する弁板部の上流側に副弁板を配置する、という構成と
した。また、この構成において主弁板の二つの弁板部の
内で開弁時に吸気通路下流側へ回動する弁板部にスワー
ル発生用空気を通過させる開口部を設ける場合がある。
更に、これらにおいて副弁板に閉弁方向モーメントを与
える閉止ばねを付勢することが好ましい。The present invention has solved the above-mentioned problems and does not cause inconsistent turbulence in the flow of intake air when the valve opening is started, and therefore, it is appropriate for the engine speed. An object of the present invention is to provide a swirl control valve that can generate swirl and can improve fuel economy and exhaust emission control in a wide range.
That is, according to the present invention, a main valve plate that opens and closes both sides sandwiching the valve shaft is fixed to a valve shaft that is arranged across the intake passage of each branch pipe of the intake manifold, and a sub valve plate that opens and closes one side is fixed. A sub-valve plate is installed on the upstream side of the valve plate part that is pivotally mounted and cantilevered and that rotates to the upstream side of the intake passage when the valve is opened among the two valve plate parts that sandwich the valve shaft of the main valve plate. It is configured to be placed. In addition, in this configuration, an opening through which swirl generating air passes may be provided in the valve plate portion that rotates to the downstream side of the intake passage when the valve is opened among the two valve plate portions of the main valve plate.
Further, it is preferable to bias a closing spring that gives a moment in the valve closing direction to the sub valve plate.
【0009】[0009]
【作用】主弁板が開弁方向へ回動をはじめると弁軸を挟
んだ両側に開口部分が形成されるが、上流側へ回動する
弁板部の更に上流側において副弁板が閉弁位置におかれ
ているため、下流側へ回動する弁板部によって形成され
る開口部分のみを空気が流れ、スワールを急激に小さく
し或いは不規則に変動させることなくエンジン吸入空気
量に応じたスワールを生成する。主弁板が副弁板の閉弁
位置まで開いた後は、これらが重なり一体となって開弁
方向へ回動し、弁軸を挟んだ両側に開口部分を形成して
高速回転域におけるエンジン要求空気量を確保する。When the main valve plate starts to rotate in the valve opening direction, openings are formed on both sides of the valve shaft, but the sub-valve plate closes on the upstream side of the valve plate that rotates upstream. Since it is in the valve position, air flows only through the opening formed by the valve plate that rotates to the downstream side, and the swirl can be adjusted according to the engine intake air amount without abruptly reducing or irregularly changing it. Generate swirl. After the main valve plate has opened to the closed position of the auxiliary valve plate, they overlap and rotate integrally in the valve opening direction, forming an opening on both sides of the valve shaft to form an engine in the high-speed rotation range. Secure the required air volume.
【0010】[0010]
【実施例】図面を参照して本発明の実施例を説明する
と、エンジンの燃焼室に接続される吸気マニホルドの各
枝管1の吸気通路2を横切って弁軸6が配置され、この
弁軸6は枝管1に回転可能に架設支持されているととも
に、吸気マニホルド負圧によりまたはエンジン運転状態
に応じた電気信号により作動するアクチュエータが軸端
に連結されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, an embodiment of the present invention will be described. A valve shaft 6 is arranged across an intake passage 2 of each branch pipe 1 of an intake manifold connected to a combustion chamber of an engine. A branch 6 is rotatably supported by the branch pipe 1, and an actuator that is operated by negative pressure in the intake manifold or by an electric signal according to the engine operating state is connected to the shaft end.
【0011】弁軸6は吸気マニホルドに挿入されてその
枝管1の一部を形成するアダプタ4の出口端近くに設置
されており、このアダプタ4は同じく出口端近くに燃料
噴射弁の取付孔3を斜めに有している。The valve shaft 6 is installed near the outlet end of an adapter 4 which is inserted into the intake manifold and forms a part of the branch pipe 1 of the intake manifold. The adapter 4 is also provided near the outlet end of the fuel injection valve. 3 diagonally.
【0012】吸気通路2は弁軸6の軸線方向へ長径でこ
れと直角方向へ短径の長円形とされており、これと同形
の主弁板7が弁軸6に止ねじ8により固着されて吸気通
路2のそれぞれを同時一斉に開閉するようになってい
る。また、この主弁板7の弁軸6を挟んだ二つの弁板部
9,10の内で取付孔3の側の弁板部9には一側方を切
欠くことによって形成した開口部11が設けられてお
り、スワール発生用の空気はこの開口部11を通って流
れる。The intake passage 2 has an elliptical shape having a long diameter in the axial direction of the valve shaft 6 and a short diameter in the direction perpendicular thereto, and a main valve plate 7 of the same shape is fixed to the valve shaft 6 with a set screw 8. The intake passages 2 are opened and closed simultaneously. Further, of the two valve plate portions 9 and 10 sandwiching the valve shaft 6 of the main valve plate 7, the valve plate portion 9 on the mounting hole 3 side has an opening 11 formed by cutting one side away. Is provided, and the air for swirl generation flows through this opening 11.
【0013】主弁板7は図1で反時計方向へ回動して開
くものであり、開口部11が設けられていない弁板部1
0の上流側に適宜の間隔を有して副弁板13が設置され
ている。この副弁板13は両端に一体形成した筒状の軸
受片14を弁軸6に嵌装することによって弁軸6に回動
可能且つ片持ち式に取付けられ、弁軸6を挟んで吸気通
路2の取付孔3と反対側の領域を開閉するものである。The main valve plate 7 is opened by rotating counterclockwise in FIG. 1, and the valve plate part 1 having no opening 11 is provided.
An auxiliary valve plate 13 is installed on the upstream side of 0 at an appropriate interval. The sub-valve plate 13 is rotatably and cantilevered on the valve shaft 6 by fitting cylindrical bearing pieces 14 integrally formed at both ends on the valve shaft 6, and the intake passage is sandwiched with the valve shaft 6 interposed therebetween. The area on the opposite side of the mounting hole 3 of 2 is opened and closed.
【0014】弁軸6に回動自由に取付けた副弁板13は
吸入空気流が衝突することにより閉弁方向モーメントが
与えられ、主弁板7が開弁方向へ回動してその弁板部1
0が重なったとき一体に回動させられて開弁するが、主
弁板7が全開から閉弁するとき副弁板13も追従して確
実に閉弁させるため閉止ばね15が作用させてある。The auxiliary valve plate 13 rotatably attached to the valve shaft 6 is given a moment in the valve closing direction by the collision of the intake air flow, and the main valve plate 7 is rotated in the valve opening direction to move the valve plate. Part 1
When 0 overlaps, the valve is integrally rotated to open the valve, but when the main valve plate 7 is closed from full opening, the auxiliary valve plate 13 also follows and the closing spring 15 is operated to surely close the valve. .
【0015】即ち、主弁板7の中心部に弁軸6を露出さ
せて窓孔12が設けられており、ねじりコイルばねから
なる閉止ばね15のコイル部分が弁軸6に窓孔12の部
分で緩く嵌装保持されているとともにその中間部分に設
けた押え部15aが弁板部9の上流側表面に接触させら
れ、且つ両端の押え部15bが副弁板13の上流側表面
に接触させられている。また、窓孔12を吸入空気が通
過してスワールを不規則に乱すのを防止するため、主弁
板7の下流側表面に窓孔12を塞いでカバー体16が重
ねられ、止めねじ8を利用して固定されている。That is, a window hole 12 is provided in the central portion of the main valve plate 7 so that the valve shaft 6 is exposed, and a coil portion of a closing spring 15 made of a torsion coil spring is provided on the valve shaft 6 at a portion of the window hole 12. The press-fitting portion 15a, which is loosely fitted and held in the intermediate part, is brought into contact with the upstream surface of the valve plate portion 9, and the press-fitting portions 15b at both ends are brought into contact with the upstream surface of the auxiliary valve plate 13. Has been. Further, in order to prevent intake air from passing through the window holes 12 and irregularly disturbing the swirl, the window body 12 is closed on the downstream side surface of the main valve plate 7 and the cover body 16 is overlapped, and the set screw 8 is attached. It is fixed by utilizing.
【0016】このような構成の本実施例は、主弁板7の
閉弁時に副弁板13は閉止ばね15のばね力およびエン
ジンが回転しているときは吸入空気流の衝突による閉弁
方向モーメントにより同じく閉弁位置に置かれ、吸入空
気は開口部11のみを通って燃焼室内でスワールを発生
させる。In this embodiment having such a structure, the valve closing direction of the auxiliary valve plate 13 due to the spring force of the closing spring 15 and the collision of the intake air flow when the engine is rotating when the main valve plate 7 is closed. It is also placed in the closed position by the moment, and the intake air passes only through the opening 11 and creates a swirl in the combustion chamber.
【0017】主弁板7が開弁を開始すると、開弁角度が
小さいエンジン低中速回転域では図3の(A)の吸気通
路2の上流側へ向かって回動する弁板部10は管壁から
離れて開口部分22を形成するが、更にその上流側に配
置された副弁板13が閉弁位置に置かれて開口部分22
を塞いでいる。一方、下流側へ向かって回動する弁板部
9も開口部分21を形成するが、この開口部分21はス
ワール発生用の開口部11を拡大するように働くので、
吸入空気は流量を増すと同時に吸気通路2の一側部分を
集中的に流れてスワールを急激に小さくし或いは不規則
に変動させることなく吸入空気量に応じて生成させる。When the main valve plate 7 starts to open, the valve plate portion 10 which rotates toward the upstream side of the intake passage 2 in FIG. 3A in the engine low / medium speed rotation region where the valve opening angle is small. The opening portion 22 is formed apart from the pipe wall, and the auxiliary valve plate 13 arranged further upstream thereof is placed in the valve closing position to open the opening portion 22.
Is blocking. On the other hand, the valve plate portion 9 that rotates toward the downstream side also forms the opening portion 21, but since this opening portion 21 acts to enlarge the opening portion 11 for swirl generation,
At the same time as the flow rate of the intake air is increased, the intake air flows intensively through one side portion of the intake passage 2 and the swirl is generated according to the intake air amount without abruptly reducing the swirl or irregularly varying.
【0018】主弁板7の閉弁位置から図3の(B)に示
すように弁板部10が副弁板13に重なるまでの範囲が
スワールの連続可変領域であり、アクチュエータによっ
て主弁板9がこの範囲内で回動しているとき、即ちエン
ジンの低中速回転域において前述のようにスワールに不
規則な乱れを生じさせない。主弁板7が更に開弁する
と、副弁板13は弁板部10に重なり押されることによ
って一体となって開弁させられ、図3の(C)に示す全
開位置に到達する。従って、スワールを必要としない一
定以上の高速回転域で弁軸6を挟んだ両側の開口部分2
1,22から大量の空気が流れ、エンジン要求空気量を
確保することとなる。The range from the closed position of the main valve plate 7 to the position where the valve plate portion 10 overlaps the sub valve plate 13 as shown in FIG. 3B is the swirl continuously variable region, and the main valve plate is controlled by the actuator. When 9 rotates in this range, that is, in the low-medium speed rotation range of the engine, the swirl does not cause irregular turbulence as described above. When the main valve plate 7 is further opened, the auxiliary valve plate 13 is integrally opened by being pushed over the valve plate portion 10 and reaches the fully open position shown in FIG. 3 (C). Therefore, the opening portions 2 on both sides sandwiching the valve shaft 6 in a high-speed rotation region above a certain level where swirl is not required
A large amount of air flows from 1 and 22, and the engine required air amount is secured.
【0019】主弁板7が高開度域から閉弁方向へ回動を
開始すると、副弁板13も閉止ばね15のばね力により
弁板部10に重なったまま一体に閉弁方向へ回動する
が、副弁板13が閉弁位置に到達した後は主弁板7のみ
が閉弁位置まで回動することとなる。従って、低中速回
転域まで減速したとき開口部11が設けられている側の
みの開口部分21を空気が通過するようになり、再び吸
入空気量に応じたスワールが作られる。When the main valve plate 7 starts to rotate in the valve closing direction from the high opening range, the sub valve plate 13 also integrally rotates in the valve closing direction while overlapping with the valve plate portion 10 by the spring force of the closing spring 15. However, after the sub valve plate 13 reaches the valve closing position, only the main valve plate 7 rotates to the valve closing position. Therefore, when the speed is reduced to the low-medium speed rotation range, the air passes through the opening portion 21 only on the side where the opening portion 11 is provided, and the swirl corresponding to the intake air amount is made again.
【0020】尚、本実施例では各枝管にスワール形成用
の開口部11を有する主弁板7とその一方の開口部分を
閉塞する副弁板13と設置したが、各枝管を二つに分け
てその一方にスワール形成用の開口部をもたない主弁板
および開口部分閉塞用の副弁板を設置し、もう一方を流
れる空気が形成するスワールを制御させるようにしても
本発明の目的を達成することができる。In this embodiment, the main valve plate 7 having the opening 11 for swirl formation in each branch pipe and the sub-valve plate 13 for closing one opening portion thereof are installed, but two branch pipes are provided. Even if the main valve plate having no opening for swirl formation and the sub-valve plate for closing the opening part are installed in one of them and the swirl formed by the air flowing through the other is controlled, The purpose of can be achieved.
【0021】[0021]
【発明の効果】以上のように、スワール制御用の蝶形の
主弁板が開弁したとき形成される二つの開口部分の一方
を或る開度まで閉塞し、空気がもう一方の開口部分のみ
を流れるようにした本発明によると、スワール形成領域
である制御弁の閉弁から或る開度の間でエンジン吸入空
気量に応じたスワールを急激に小さくし或いは不規則に
変動させることなく生成させることができる。従って、
主弁板と副弁板との閉弁位置における互いの間隔を適宜
に設定して一方の開口部分を閉塞しておく範囲を大きく
することにより、スワールの連続可変領域を拡張して広
範囲領域での燃料経済性、排気対策の向上を実現させる
ことができるものである。As described above, one of the two opening portions formed when the butterfly-shaped main valve plate for swirl control is opened is closed to a certain opening degree, and the air is opened to the other opening portion. According to the present invention in which only the flow is made to flow, the swirl corresponding to the amount of intake air of the engine is not suddenly reduced or irregularly changed from the closing of the control valve, which is the swirl formation region, to a certain opening. Can be generated. Therefore,
The continuous variable range of the swirl is expanded to a wide range by setting the distance between the main valve plate and the sub valve plate at the valve closing position appropriately to increase the range in which one opening is closed. It is possible to realize improved fuel economy and exhaust emission countermeasures.
【図1】本発明の実施例の縦断面図。FIG. 1 is a vertical sectional view of an embodiment of the present invention.
【図2】図1の左から見た一部切截側面図。FIG. 2 is a partially cut side view seen from the left of FIG.
【図3】動作を説明する側面略図。FIG. 3 is a schematic side view for explaining the operation.
1 枝管, 2 吸気通路, 6 弁軸, 7 主弁
板, 9,10 弁板部, 11 開口部, 3 副弁
板, 15 閉止ばね,1 branch pipe, 2 intake passage, 6 valve shaft, 7 main valve plate, 9 and 10 valve plate part, 11 opening part, 3 auxiliary valve plate, 15 closing spring,
Claims (3)
切って配置された弁軸に、この弁軸を挟んだ両側を開閉
する主弁板が固着されているとともに一側を開閉する副
弁板が回動可能且つ片持ち式に取付けられており、且つ
前記主弁板の前記弁軸を挟んだ二つの弁板部の内で開弁
時に吸気通路上流側へ回動する弁板部の上流側に前記副
弁板が配置されていることを特徴とするスワール制御
弁。1. A sub-valve that opens and closes one side of a main valve plate that opens and closes both sides sandwiching the valve shaft is fixed to a valve shaft that is arranged across the intake passage of each branch pipe of the intake manifold. Of the valve plate part, which is mounted rotatably and in a cantilevered manner, and which rotates to the upstream side of the intake passage when the valve is opened among the two valve plate parts sandwiching the valve shaft of the main valve plate. A swirl control valve, wherein the sub valve plate is arranged on the upstream side.
気通路下流側へ回動する弁板部にスワール発生用空気を
通過させる開口部が設けられている請求項1記載のスワ
ール制御弁。2. The opening for passing swirl generating air is provided in the valve plate portion of the two valve plate portions of the main valve plate which is rotated to the downstream side of the intake passage when the valve is opened. Swirl control valve.
止ばねが付勢されている請求項1,2いずれか記載のス
ワール制御弁。3. The swirl control valve according to claim 1, wherein a closing spring that gives a moment in a valve closing direction is biased to the sub valve plate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6105914A JPH07293258A (en) | 1994-04-21 | 1994-04-21 | Swirl controlling valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6105914A JPH07293258A (en) | 1994-04-21 | 1994-04-21 | Swirl controlling valve |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH07293258A true JPH07293258A (en) | 1995-11-07 |
Family
ID=14420139
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6105914A Withdrawn JPH07293258A (en) | 1994-04-21 | 1994-04-21 | Swirl controlling valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07293258A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6979130B1 (en) | 1999-09-16 | 2005-12-27 | Montaplast Gmbh | Bearing device |
CN109264222A (en) * | 2018-10-23 | 2019-01-25 | 浙江迦南科技股份有限公司 | A kind of butterfly plate is with dynamic auxiliary discharging device |
-
1994
- 1994-04-21 JP JP6105914A patent/JPH07293258A/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6979130B1 (en) | 1999-09-16 | 2005-12-27 | Montaplast Gmbh | Bearing device |
CN109264222A (en) * | 2018-10-23 | 2019-01-25 | 浙江迦南科技股份有限公司 | A kind of butterfly plate is with dynamic auxiliary discharging device |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20010703 |