JP3175204B2 - Electromagnetic drive valve for intake and exhaust of engine - Google Patents
Electromagnetic drive valve for intake and exhaust of engineInfo
- Publication number
- JP3175204B2 JP3175204B2 JP19245791A JP19245791A JP3175204B2 JP 3175204 B2 JP3175204 B2 JP 3175204B2 JP 19245791 A JP19245791 A JP 19245791A JP 19245791 A JP19245791 A JP 19245791A JP 3175204 B2 JP3175204 B2 JP 3175204B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- stem
- exhaust
- intake
- valve stem
- 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.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
- F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
- F01L2009/2115—Moving coil actuators
Landscapes
- Valve Device For Special Equipments (AREA)
- Magnetically Actuated Valves (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は電磁力により駆動されて
開閉弁を行う電磁駆動バルブに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetically driven valve which is driven by an electromagnetic force to open and close a valve.
【０００２】[0002]
【従来の技術】従来からエンジンの吸排気バルブは、ク
ランク軸の回転に応じて作動するリンク機構やカムなど
により機械的に駆動されるものが使用されているが、バ
ルブの開閉タイミングの変更や、バルブの駆動力を適切
に制御するために、例えば特開平２−１２３２１０号公
報に示されたような電磁力により吸引されて駆動される
バルブが使用されている。2. Description of the Related Art Conventionally, intake and exhaust valves of an engine are mechanically driven by a link mechanism or a cam which operates according to the rotation of a crankshaft. In order to appropriately control the driving force of the valve, for example, a valve which is attracted and driven by an electromagnetic force as disclosed in Japanese Patent Application Laid-Open No. 2-123210 is used.
【０００３】[0003]
【発明が解決しようとする課題】この種の電磁バルブは
平板状の磁性体を電磁石の吸引力により駆動している
が、バルブのストロークの長いものでは、駆動初期にお
ける吸引間隔が大となり、したがって吸引初期には大き
な吸引力、すなわち大電力を電磁石に供給しないと駆動
できないという問題がある。In this type of electromagnetic valve, a flat magnetic body is driven by the attraction force of an electromagnet. However, if the valve has a long stroke, the suction interval in the initial stage of driving becomes large. There is a problem that the drive cannot be performed unless a large suction force, that is, a large power is supplied to the electromagnet in the initial stage of the suction.
【０００４】本発明はこのような問題に鑑みてなされた
ものであり、その目的はソレノイド型と他の駆動機構と
の併用により十分な初期駆動力を得ようとする電磁駆動
バルブを提供することにある。The present invention has been made in view of such a problem, and an object of the present invention is to provide an electromagnetically driven valve which obtains a sufficient initial driving force by using a solenoid type together with another driving mechanism. It is in.
【０００５】上記の目的を達成するため、本発明では、
先端に弁部を有するバルブステムの後端に、該バルブス
テムに対して直角方向の平板状磁性体が取り付けられる
と共に、通電時に該平板状磁性体を吸引することにより
前記バルブステムを開弁方向に駆動する電磁石を備えた
エンジン吸排気用電磁駆動バルブにおいて、前記バルブ
ステムを挿通した円筒状コアと該円筒状コアを間隔をお
いて取り巻くよう配設された円筒状永久磁石との間の空
隙内に軸方向に遊動自在に配設され、前記バルブステム
を閉弁方向に弾発するスプリングを経て開弁時にのみ通
電される可動線輪を、前記バルブステムの途中位置に取
り付けることにより、開弁時に前記バルブステムを駆動
する力を大とするととした。 [0005] In order to achieve the above object , the present invention provides:
At the rear end of the valve stem having a valve section at the tip,
A plate-like magnetic body perpendicular to the system is attached
At the same time, by attracting the flat magnetic
An electromagnet for driving the valve stem in a valve opening direction was provided.
An electromagnetically driven valve for intake and exhaust of an engine, wherein the valve
The cylindrical core with the stem inserted and the cylindrical core
And the space between the cylindrical permanent magnets
The valve stem is disposed in the gap so as to be freely movable in the axial direction.
Through the spring that rebounds in the valve closing direction only when the valve is open.
Place the movable wire loop to be charged in the middle of the valve stem.
Drive the valve stem when the valve is open
It is said that the power to perform is large.
【０００６】[0006]
【実施例】つぎに本発明の実施例について図面を用いて
詳細に説明する。Next, an embodiment of the present invention will be described in detail with reference to the drawings.
【０００７】図１は本発明にかかる電磁駆動バルブの一
実施例の断面図であり、図２はその切断線Ａ−Ａに沿っ
た断面図である。FIG. 1 is a cross-sectional view of one embodiment of an electromagnetically driven valve according to the present invention, and FIG. 2 is a cross-sectional view taken along a cutting line AA.
【０００８】これらの図面において、１は電磁バルブ
で、例えばエンジンの吸気流路に設けられてその流路を
開閉制御するものであり、その下方にはシリンダ頭部２
の弁座２１に密接して閉弁する弁部１１、バルブガイド
２２に保持されるステム部１２、上方には後述する電磁
石に吸引される強磁性体からなる平板部１３が備えられ
ている。In these drawings, reference numeral 1 denotes an electromagnetic valve which is provided, for example, in an intake passage of an engine and controls opening and closing of the passage.
A valve portion 11 that closes and closes the valve seat 21, a stem portion 12 held by a valve guide 22, and a flat plate portion 13 made of a ferromagnetic material attracted to an electromagnet described later are provided above.
【０００９】そして、ステム部１２の所定位置にはカッ
プ状の可動線輪部１４が上方に開口するように取付けら
れ、そのリード線は電磁バルブ１を弾性力によって閉弁
位置にバイアスさせるスプリング１５，１６を介して引
出されるように形成されている。なお、該可動線輪部１
４は円周方向に複数回、巻回されたコイルを備え、恰も
ダイナミックスピーカのボイスコイルのように、磁界中
に置かれたコイルが通電されると、電流の方向とは直角
方向に力が働き可動線輪部１４が図示の上下方向に駆動
されるように構成されている。また、図示の１７は可動
線輪部１４をステム部１２に固着させるための楔金具で
ある。A cup-shaped movable wire loop portion 14 is mounted at a predetermined position of the stem portion 12 so as to open upward, and its lead wire is connected to a spring 15 for biasing the electromagnetic valve 1 to a closed position by an elastic force. , 16 are drawn out. The movable wire loop 1
4 is provided with a coil wound a plurality of times in the circumferential direction, and when a coil placed in a magnetic field is energized, such as a voice coil of a dynamic speaker, a force is applied in a direction perpendicular to the direction of the current. The working movable loop portion 14 is configured to be driven in the vertical direction shown in the figure. Reference numeral 17 denotes a wedge fitting for fixing the movable wire loop 14 to the stem 12.
【００１０】３は電磁駆動部でシリンダ頭部の所定位置
に配置され、電磁石４とコイル駆動部５とからなり、電
磁石４は内コア３１、外コア４１、巻線４２とを備え
て、巻線４２への通電にて生ずる磁気力により、電磁バ
ルブ１の平板部１３を下方向に移動させる力を生ずるも
のである。Reference numeral 3 denotes an electromagnetic drive unit which is arranged at a predetermined position on the cylinder head and comprises an electromagnet 4 and a coil drive unit 5. The electromagnet 4 has an inner core 31, an outer core 41 and a winding 42, A magnetic force generated by energizing the wire 42 generates a force for moving the flat plate portion 13 of the electromagnetic valve 1 downward.
【００１１】また、コイル駆動部５は円筒状の永久磁石
５１と、フィルドコア５２と、内コア３１の下方に延長
された鉄心部とにより、前述の可動線輪部１４の半径方
向に強力な磁場を生じさせるものであり、したがって、
永久磁石５１は図示のように、その半径方向に着磁され
ている。なお、３２は内コア３１の内面に設けられたバ
ルブガイドで、電磁バルブ１のステム部１２の上方を摺
動自在に保持するように構成されている。The coil driving section 5 has a strong magnetic field in the radial direction of the movable wire loop 14 by the cylindrical permanent magnet 51, the filled core 52, and the iron core extending below the inner core 31. And therefore,
The permanent magnet 51 is magnetized in the radial direction as shown. Reference numeral 32 denotes a valve guide provided on the inner surface of the inner core 31 so as to slidably hold the upper portion of the stem 12 of the electromagnetic valve 1.
【００１２】つぎに、このように構成された本実施例の
作動を説明する。Next, the operation of the embodiment constructed as described above will be described.
【００１３】図１に示した閉弁位置から電磁バルブ１を
下方に移動して開弁させるには、電磁石４の巻線４２に
通電するとともに、スプリング１５，１６を介してステ
ム部１２に配置した可動線輪部１４に所定方向の電流を
通電する。In order to move the electromagnetic valve 1 downward from the valve closing position shown in FIG. 1 to open it, the coil 42 of the electromagnet 4 is energized, and is disposed on the stem 12 via the springs 15 and 16. A current in a predetermined direction is supplied to the movable wire loop portion 14 thus completed.
【００１４】このため、電磁石４の巻線４２の通電によ
る磁気吸引力によって、ステム部１２の上方の平板部１
３を下方に引付ける力が働くとともに、永久磁石５１に
て生ずる磁界内の可動線輪部１４の通電による電磁力に
より、ステム部１２がスプリング１５，１６の弾性力に
打勝って下方に駆動されることになる。なお、この場
合、駆動初期においては平板部１２と電磁石４との間隔
は大きく離れているため、電磁石４の吸引力が電磁バル
ブ１を下方に移動させるまでに至らなくとも、可動線輪
部１４による下方向の電磁力が加わるので、十分な初期
駆動が行われて電磁バルブ１は開弁されることになる。For this reason, the flat plate portion 1 above the stem portion 12 is generated by the magnetic attraction force caused by the energization of the winding 42 of the electromagnet 4.
As a result, the stem portion 12 overcomes the elastic force of the springs 15 and 16 and is driven downward by the electromagnetic force generated by the energization of the movable wire portion 14 in the magnetic field generated by the permanent magnet 51. Will be done. In this case, since the gap between the flat plate portion 12 and the electromagnet 4 is largely separated in the initial stage of driving, even if the attraction force of the electromagnet 4 does not reach the position where the electromagnetic valve 1 is moved downward, the movable wire ring portion 14 is not required. , A sufficient initial drive is performed and the electromagnetic valve 1 is opened.
【００１５】つぎに、開弁時から閉弁させる場合は、電
磁石４への通電を断にするとともに、可動線輪部１４へ
の通電は前記と逆方向の電流を供給する。この逆方向の
電流のため、永久磁石５１にて生ずる磁界内の可動線輪
部１４には上方向の力が働き、スプリング１５，１６の
弾性力と相俟って電磁バルブ１が上方向に駆動されて弁
部１１が弁座２１に密接し、閉弁が行われることにな
る。Next, when the valve is closed from the time of opening, the energization of the electromagnet 4 is cut off, and the energization of the movable wire loop 14 supplies a current in a direction opposite to the above. Due to the current in the opposite direction, an upward force acts on the movable wire ring portion 14 in the magnetic field generated by the permanent magnet 51, and the electromagnetic valve 1 moves upward due to the elastic force of the springs 15 and 16. When driven, the valve section 11 comes into close contact with the valve seat 21 and the valve is closed.
【００１６】以上、本発明を上述の実施例によって説明
したが、本発明の主旨の範囲内で種々の変形が可能であ
り、これらの変形を本発明の範囲から排除するものでは
ない。Although the present invention has been described with reference to the above-described embodiments, various modifications can be made within the scope of the present invention, and these modifications are not excluded from the scope of the present invention.
【００１７】[0017]
【発明の効果】上述の実施例のように本発明によれば、
電磁バルブのステム部に電磁石に吸引される平板部と、
磁界中にて電磁力を生ずる可動線輪部とを取付けたの
で、開弁作動時には電磁石の吸引と可動線輪部の電磁力
とが共に働いて、電磁バルブのストロークの長い場合で
も、十分な駆動力が得られるという効果を生ずる。According to the present invention as in the above embodiment,
A flat plate part attracted by the electromagnet to the stem part of the electromagnetic valve,
Since the movable wire that generates electromagnetic force in the magnetic field is installed, the electromagnetic force of the movable magnet and the electromagnetic force work together when the valve is opened, so that even when the stroke of the electromagnetic valve is long, sufficient This produces an effect that a driving force can be obtained.
【図１】本発明にかかる電磁駆動バルブの一実施例の断
面図である。FIG. 1 is a sectional view of one embodiment of an electromagnetically driven valve according to the present invention.
【図２】図１に示す切断線Ａ−Ａに沿った断面図であ
る。FIG. 2 is a cross-sectional view taken along a cutting line AA shown in FIG.
１…電磁バルブ ４…電磁石 ５…コイル駆動 １３…平板部 １４…可動線輪部 ５１…永久磁石 ５２…フィルドコア DESCRIPTION OF SYMBOLS 1 ... Electromagnetic valve 4 ... Electromagnet 5 ... Coil drive 13 ... Flat plate part 14 ... Movable wire part 51 ... Permanent magnet 52 ... Field core
Claims (1)
に、該バルブステムに対して直角方向の平板状磁性体が
取り付けられると共に、通電時に該平板状磁性体を吸引
することにより前記バルブステムを開弁方向に駆動する
電磁石を備えたエンジン吸排気用電磁駆動バルブにおい
て、 前記バルブステムを挿通した円筒状コアと該円筒状コア
を間隔をおいて取り巻くよう配設された円筒状永久磁石
との間の空隙内に軸方向に遊動自在に配設され、前記バ
ルブステムを閉弁方向に弾発するスプリングを経て開弁
時にのみ通電される可動線輪を、前記バルブステムの途
中位置に取り付けることにより、 開弁時に前記バルブステムを駆動する力を大としたこと
を特徴とするエンジン吸排気用電磁駆動バルブ。 1. A rear end of a valve stem having a valve portion at a front end.
In addition, a plate-like magnetic body perpendicular to the valve stem
Attached and sucks the flat magnetic body when energized
To drive the valve stem in the valve opening direction.
For electromagnetically driven valves for intake and exhaust of engines with electromagnets
Te, cylindrical core and said cylindrical core inserted through said valve stem
Cylindrical permanent magnets arranged at intervals around
Is disposed so as to be freely movable in the axial direction in the space between
The valve is opened via a spring that springs the lube stem in the valve closing direction
The movable wire that is energized only when
By mounting in the middle position, the driving force of the valve stem at the time of valve opening is increased.
An electromagnetically driven valve for engine intake and exhaust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19245791A JP3175204B2 (en) | 1991-07-06 | 1991-07-06 | Electromagnetic drive valve for intake and exhaust of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19245791A JP3175204B2 (en) | 1991-07-06 | 1991-07-06 | Electromagnetic drive valve for intake and exhaust of engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0518220A JPH0518220A (en) | 1993-01-26 |
| JP3175204B2 true JP3175204B2 (en) | 2001-06-11 |
Family
ID=16291623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19245791A Expired - Fee Related JP3175204B2 (en) | 1991-07-06 | 1991-07-06 | Electromagnetic drive valve for intake and exhaust of engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3175204B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08136820A (en) * | 1994-11-11 | 1996-05-31 | Koike Seiki Kk | Sample stage vertical fine adjustment device for laser scanning microscope |
| US7270093B2 (en) | 2005-04-19 | 2007-09-18 | Len Development Services Corp. | Internal combustion engine with electronic valve actuators and control system therefor |
| US8037853B2 (en) | 2005-04-19 | 2011-10-18 | Len Development Services Usa, Llc | Internal combustion engine with electronic valve actuators and control system therefor |
| JP2006336525A (en) | 2005-06-01 | 2006-12-14 | Toyota Motor Corp | Electromagnetic actuation valve |
-
1991
- 1991-07-06 JP JP19245791A patent/JP3175204B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0518220A (en) | 1993-01-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |