JP2984705B2 - Engine intake control valve device - Google Patents
Engine intake control valve deviceInfo
- Publication number
- JP2984705B2 JP2984705B2 JP1319443A JP31944389A JP2984705B2 JP 2984705 B2 JP2984705 B2 JP 2984705B2 JP 1319443 A JP1319443 A JP 1319443A JP 31944389 A JP31944389 A JP 31944389A JP 2984705 B2 JP2984705 B2 JP 2984705B2
- Authority
- JP
- Japan
- Prior art keywords
- control valve
- negative pressure
- intake
- engine
- control
- 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 - Lifetime
Links
Landscapes
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は主に自動車用多気筒エンジンの吸気を制御し
て燃焼の改善や出力の向上を計るため吸気マニホルドの
一部の吸気通路を開閉させる吸気制御弁装置に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention mainly controls the intake of a multi-cylinder engine for an automobile to open and close a part of an intake passage of an intake manifold in order to improve combustion and improve output. The present invention relates to an intake control valve device to be operated.
［従来の技術］ エンジンの一つの燃焼室に接続される吸気マニホルド
の一つのブランチを二つの吸気通路に分け、その一方に
制御弁を設けてエンジンの低中速域では制御弁を閉弁さ
せてもう一方のみにより燃焼室に強力なスワールを発生
させて燃焼の改善を計り、中高速域では制御弁を開弁し
て二つの吸気通路により出力の向上を計る技術は周知で
あり、制御弁は吸気マニホルド負圧が作用する負圧式ア
クチュエータで開閉動作させられるのが普通である（特
開昭54−99826号公報参照）。[Prior Art] One branch of an intake manifold connected to one combustion chamber of an engine is divided into two intake passages, and a control valve is provided in one of the two intake passages, and the control valve is closed in a low to medium speed region of the engine. It is well known that the other side generates a strong swirl in the combustion chamber to improve combustion, and that the control valve is opened at medium to high speeds to increase the output through two intake passages. Is usually opened and closed by a negative pressure type actuator on which an intake manifold negative pressure acts (see Japanese Patent Application Laid-Open No. 54-99826).
ところが、負圧式アクチュエータは絞り弁下流側に発
生する吸気マニホルド負圧で作動し、設定負圧で制御弁
を閉位置から開位置へ或いはその反対へ動作させる二位
置制御である。従って、制御弁が一方の吸気通路を閉じ
ている状態で絞り弁がアイドル位置から次第に大きく開
かれたとき、もう一方の吸気通路のみによる吸気量では
限度があるので中速域で低トルク領域が発生し、所要の
エンジン運転性能が得られないという問題がある。その
対策として制御弁を設けない吸気通路径を大きくしたり
制御弁の開閉時期を早くすると強力なスワールを発生さ
せることができなくなる。However, the negative pressure type actuator is operated by the intake manifold negative pressure generated downstream of the throttle valve, and is a two-position control in which the control valve is operated from a closed position to an open position or vice versa at a set negative pressure. Therefore, when the throttle valve is gradually opened from the idle position while the control valve is closing one intake passage, the amount of intake by only the other intake passage is limited, so that the low torque region in the medium speed region is limited. This causes a problem that required engine operation performance cannot be obtained. As a countermeasure, if the diameter of the intake passage without the control valve is increased or the opening / closing timing of the control valve is advanced, a strong swirl cannot be generated.
［発明が解決しようとする課題］ 本発明は負圧式アクチュエータで吸気通路の制御弁を
二位置制御する従来の技術がもっている中速域で低トル
ク領域が発生してエンジン運転性能を損う、という課題
を解決しようとするものであって、中速域においてスワ
ールを悪化させることなく要求量の空気を供給しエンジ
ン運転性能を良好ならしめる吸気制御弁装置を提供する
ことを目的とする。[Problems to be Solved by the Invention] The present invention has a conventional technology in which a control valve of an intake passage is controlled at two positions by a negative pressure type actuator. SUMMARY OF THE INVENTION An object of the present invention is to provide an intake control valve device that supplies a required amount of air without deteriorating swirl in a medium speed range and improves engine operation performance.
［課題を解決するための手段］ エンジンの一つの燃焼室に接続された吸気マニホルド
の一つのブランチが二つの吸気通路を有しており、吸気
マニホルド負圧が作用する負圧式アクチュエータで開閉
させられる制御弁が前記二つの吸気通路の一方に設けら
れているエンジンの吸気制御弁装置がもっている前記課
題を解決するため本発明が講じた手段は次の通りであ
る。[Means for Solving the Problems] One branch of an intake manifold connected to one combustion chamber of an engine has two intake passages, and is opened and closed by a negative pressure actuator on which an intake manifold negative pressure acts. Means taken by the present invention to solve the above-mentioned problems of the engine intake control valve device in which the control valve is provided in one of the two intake passages are as follows.
即ち、絞り弁がアイドル位置から或る開度位置に開か
れるまでは制御弁を全閉位置とするが或る開度位置から
全開位置に至ったとき絞り弁と連動して負圧式アクチュ
エータに関係なく制御弁を全閉位置から半開位置に至ら
せる無段開閉機構を具えさせ、そして負圧式アクチュエ
ータは吸気マニホルド負圧が設定負圧以下となったとき
制御弁を無段開閉機構に関係なく全開位置に動作させる
ようにした。That is, the control valve is in the fully closed position until the throttle valve is opened from the idle position to a certain opening position, but when the throttle valve is moved from the certain opening position to the fully open position, the control valve is related to the negative pressure type actuator in conjunction with the throttle valve. Without opening and closing the control valve from the fully closed position to the half open position, and the negative pressure actuator fully opens the control valve regardless of the continuously open / close mechanism when the intake manifold negative pressure falls below the set negative pressure. Moved to position.
［作 用］ エンジンの低速域で制御弁は一方の吸気通路を閉じて
おり、もう一方の吸気通路によって燃焼室に強力なスワ
ールを発生させる。絞り弁がアイドル位置から次第に開
かれエンジン要求空気量が増大すると、前記もう一方の
吸気通路がサージする空気量の限度に達する前に無段開
閉機構が制御弁を少しずつ開かせる。これによりエンジ
ン要求空気量が供給されるとともに空気流速が著しく低
下してスワールを弱めるということがなく、低トルク領
域が解消されることとなる。[Operation] In the low speed range of the engine, the control valve closes one intake passage, and the other intake passage generates a strong swirl in the combustion chamber. When the throttle valve is gradually opened from the idle position and the required air amount of the engine increases, the stepless opening / closing mechanism gradually opens the control valve before the other intake passage reaches the limit of the amount of air to be surged. As a result, the required air amount of the engine is supplied and the air flow velocity is not significantly reduced to reduce the swirl, thereby eliminating the low torque region.
吸気マニホルド負圧が設定負圧以下になると負圧式ア
クチュエータが制御弁を全開させ、これにより高速時の
エンジン要求空気量を従来通り供給できるようになる。When the intake manifold negative pressure becomes equal to or lower than the set negative pressure, the negative pressure actuator fully opens the control valve, whereby the required engine air amount at high speed can be supplied as before.
［実施例］ 図面を参照して本発明の実施例を説明する。Example An example of the present invention will be described with reference to the drawings.
第１図は本発明の概要を示すものであって、１はスロ
ットルボディ、６は吸気マニホルド、13はエンジンを示
している。スロットルボディ１はエンジン13の回転速度
制御用の絞り弁２を支持しており、絞り弁軸３に取付け
たスロットルレバー４に結合したアクセルワイヤ５を引
張ることにより絞り弁２が開き、アクセルワイヤ５を緩
めると図示しない閉弁ばねのばね力で絞り弁２が閉じる
ことは従来と同じである。吸気マニホルド６のブランチ
７はそれぞれが低速用の吸気通路８と高速用の吸気通路
９とに分かれていてそれらは途中の吸気制御ボディ10を
経てエンジン13の燃焼室入口で合流していることも従来
と同じである。FIG. 1 shows an outline of the present invention, wherein 1 is a throttle body, 6 is an intake manifold, and 13 is an engine. The throttle body 1 supports a throttle valve 2 for controlling the rotation speed of the engine 13. The throttle valve 2 is opened by pulling an accelerator wire 5 connected to a throttle lever 4 attached to a throttle valve shaft 3, and the throttle wire 5 is opened. Is loosened, the throttle valve 2 is closed by the spring force of a valve-closing spring (not shown) as in the conventional case. Each branch 7 of the intake manifold 6 is divided into an intake passage 8 for low speed and an intake passage 9 for high speed, and these may join at the entrance of the combustion chamber of the engine 13 through the intake control body 10 on the way. Same as before.
第２図を参照して吸気制御ボディ10は各吸気通路８、
９に対応した低速用のポート11と高速用のポート12とを
具えており、それらの中心軸線を通って一本の制御弁軸
14が貫通し、高速用のポート12を開閉する円形の弁板15
が制御弁軸14に取付けられて制御弁16を構成している。Referring to FIG. 2, the intake control body 10 is provided with each intake passage 8,
9 has a low-speed port 11 and a high-speed port 12 corresponding to one control valve shaft.
A circular valve plate 15 through which the high-speed port 12 opens and closes
Are attached to the control valve shaft 14 to form the control valve 16.
17はダイヤフラムおよびダイヤフラムばねを内蔵した
負圧式アクチュエータであって、負圧導管18によって吸
気マニホルド負圧が作用してダイヤフラムに固着したダ
イヤフラムロッド19を直線往復動させることも従来と同
じである。ダイヤフラムロッド19の先端は連結ロッド20
を介して制御弁軸14に回動自由に支持した制御弁アーム
21に連結されている。Numeral 17 denotes a negative pressure type actuator having a built-in diaphragm and a diaphragm spring. The negative pressure conduit 18 applies a negative pressure on the intake manifold to linearly reciprocate a diaphragm rod 19 fixed to the diaphragm in the same manner as in the prior art. The tip of the diaphragm rod 19 is the connecting rod 20
Control valve arm rotatably supported on control valve shaft 14 via
Connected to 21.
絞り弁軸３にはスロットルレバー４に並べて制御レバ
ー22が取付けられているとともに、制御弁軸14に制御ア
ーム23が回動自由に支持されていてこれらに制御ワイヤ
24の両端が結合され、更に制御弁軸14に駆動レバー25が
固着されていて、これは無段開閉機構26を構成してい
る。A control lever 22 is attached to the throttle valve shaft 3 side by side with the throttle lever 4, and a control arm 23 is rotatably supported on the control valve shaft 14.
The both ends of 24 are connected, and a drive lever 25 is further fixed to the control valve shaft 14, and this constitutes a stepless opening / closing mechanism 26.
絞り弁２がアイドル位置であり制御弁16が閉弁位置で
あるとき、制御ワイヤ24がほぼ緊張しているとともに制
御アーム23と駆動レバー25とが離間しているか、または
制御ワイヤ24が緩んでいるとともに制御アーム23と駆動
レバー25とが接している。また、制御弁アーム21は吸気
マニホルド負圧が設定負圧よりも高いとき駆動レバー25
に作用しないが、設定負圧よりも低くなると駆動レバー
25を押して制御弁16を全開とするようになっている。When the throttle valve 2 is in the idle position and the control valve 16 is in the closed position, the control wire 24 is almost taut and the control arm 23 is separated from the drive lever 25, or the control wire 24 is loose. And the control arm 23 and the drive lever 25 are in contact with each other. When the intake manifold negative pressure is higher than the set negative pressure, the control valve arm 21
Does not act on the drive lever, but when it becomes lower than the set negative pressure, the drive lever
By pressing 25, the control valve 16 is fully opened.
このように構成した本実施例は、エンジン13が始動し
て絞り弁２がアイドル位置から少し開かれたとき、制御
レバー22が回動するにもかかわらず制御アーム23は駆動
レバー25を押して制御弁16が開かせることがなく、吸入
空気は低速用の吸気通路８のみを通ってエンジン13の燃
焼室に送られスワールを発生する。この吸気通路８を従
来よりも小径とすることにより、空気流速は高速となり
強力なスワールを発生する。In the present embodiment configured as described above, when the engine 13 is started and the throttle valve 2 is slightly opened from the idle position, the control arm 23 presses the drive lever 25 to perform control even though the control lever 22 rotates. Without the valve 16 being opened, the intake air passes only through the low-speed intake passage 8 to the combustion chamber of the engine 13 to generate swirl. By making the intake passage 8 smaller in diameter than the conventional one, the air flow velocity becomes high and a strong swirl is generated.
絞り弁２が次第に大きく開かれてエンジン要求空気量
が低速用の吸気通路８がサージする空気量の限度に達す
る少し前に制御アーム23が駆動レバー25を押して制御弁
軸14を回動し制御弁16を開かせるようになる。このとき
の絞り弁２の開度位置から全開位置に至るまでに制御弁
16は全閉位置から適宜角度の半開位置まで開かれるよう
に制御レバー22、制御アーム23が設計されており、この
ため吸入空気量の増加に対して高速用の吸気通路９の開
きは小さいので、トルクを低下させないばかりか空気流
速を著しく低下してスワールを弱めるという不都合がな
い。また、駆動レバー25は制御弁アーム21から離れる方
向へ回動するので、無段開閉機構26は負圧式アクチュエ
ータ17に関係なく制御弁16を無段階に開閉し、エンジン
要求空気量を満しながらトルクやスワールを急変させな
い。The control arm 23 pushes the drive lever 25 to rotate the control valve shaft 14 shortly before the throttle valve 2 is gradually opened widely and the required engine air amount reaches the limit of the amount of air that the low-speed intake passage 8 surges. The valve 16 is opened. At this time, the control valve is moved from the opening position of the throttle valve 2 to the fully opened position.
Reference numeral 16 designates a control lever 22 and a control arm 23 which are opened from a fully closed position to a half-open position at an appropriate angle. Since the opening of the high-speed intake passage 9 is small with respect to an increase in intake air amount, In addition, there is no inconvenience that the swirl is weakened by not only reducing the torque but also significantly reducing the air flow velocity. Further, since the drive lever 25 rotates in a direction away from the control valve arm 21, the stepless opening / closing mechanism 26 opens and closes the control valve 16 steplessly regardless of the negative pressure type actuator 17, while satisfying the engine required air amount. Do not change torque or swirl suddenly.
絞り弁２がエンジン13の中速域まで開かれ、吸気マニ
ホルド負圧が設定負圧以下になると負圧式アクチュエー
タ17が動作して制御弁アーム21が駆動レバー25を押し制
御弁16を一挙に全開とする。このとき駆動レバー25は制
御アーム23から離れる方向へ回動するので、負圧式アク
チュエータ17は無段開閉機構26に関係なく制御弁16を全
開とし、高速域におけるエンジン要求空気量を供給する
ことができるようになる。When the throttle valve 2 is opened to the middle speed range of the engine 13 and the intake manifold negative pressure becomes equal to or lower than the set negative pressure, the negative pressure type actuator 17 operates and the control valve arm 21 pushes the drive lever 25 to fully open the control valve 16 at a stroke. And At this time, since the drive lever 25 rotates in a direction away from the control arm 23, the negative pressure type actuator 17 can fully open the control valve 16 regardless of the stepless opening / closing mechanism 26 and supply the engine required air amount in a high speed range. become able to.
絞り弁２が閉じると制御アーム23は図示しない戻しば
ねのばね力で初期位置へ向かって回動し、更に負圧式ア
クチュエータ17が設定負圧以上で制御弁アーム21を初期
位置に戻すと、制御弁軸14は同じく図示しない戻しばね
のばね力で閉弁方向へ回動させられる。When the throttle valve 2 is closed, the control arm 23 rotates toward the initial position by the spring force of a return spring (not shown), and when the negative pressure actuator 17 returns the control valve arm 21 to the initial position when the negative pressure is equal to or higher than the set negative pressure, control is performed. The valve shaft 14 is also turned in the valve closing direction by the spring force of a return spring (not shown).
尚、負圧式アクチュエータ17が動作するのはエンジン
回転速度が約5000rpmのときであるように設定される。The operation of the negative pressure actuator 17 is set to be performed when the engine rotation speed is about 5000 rpm.
［発明の効果］ 本発明によると、強力なスワールを必要とする低中速
域でエンジン要求量の空気をスワールを悪化させること
なく供給し、トルクの低下や燃焼状態の不良を招かない
でエンジン運転性能を良好ならしめることができ、しか
も高速域でエンジン要求量の空気を従来通りに供給する
ことができる。[Effects of the Invention] According to the present invention, an engine required amount of air is supplied without deteriorating the swirl in a low to medium speed range where a strong swirl is required, and the engine is prevented from causing a decrease in torque and a defective combustion state. The driving performance can be improved, and the required amount of air can be supplied as usual in the high-speed range.
第１図は本発明の実施例の概略正面図、第２図は吸気制
御ボディの部分の平面図、第３図は第２図の矢視Ａ−Ａ
方向の拡大図、第４図は第３図の断面正面図である。 ２……絞り弁、６……吸気マニホルド、７……ブラン
チ、８、９……吸気通路、10……吸気制御ボディ、13…
…エンジン、16……制御弁、17……負圧式アクチュエー
タ、21……制御弁アーム、22……制御レバー、23……制
御アーム、24……制御ワイヤ、25……駆動レバー、26…
…無段開閉レバー、FIG. 1 is a schematic front view of an embodiment of the present invention, FIG. 2 is a plan view of a part of an intake control body, and FIG.
FIG. 4 is a sectional front view of FIG. 2 ... throttle valve, 6 ... intake manifold, 7 ... branch, 8, 9 ... intake passage, 10 ... intake control body, 13 ...
... Engine, 16 ... Control valve, 17 ... Negative pressure actuator, 21 ... Control valve arm, 22 ... Control lever, 23 ... Control arm, 24 ... Control wire, 25 ... Drive lever, 26 ...
… Stepless open / close lever,
Claims (1)
マニホルドの一つのブランチが二つの吸気通路を有して
おり、吸気マニホルド負圧が作用する負圧式アクチュエ
ータで開閉させられる制御弁が前記二つの吸気通路の一
方に設けられているエンジンの吸気制御弁装置におい
て、絞り弁がアイドル位置から或る開度位置に開かれる
までは前記制御弁を全閉位置とするが或る開度位置から
全開位置に至ったとき前記絞り弁と連動して前記負圧式
アクチュエータに関係なく前記制御弁を全閉位置から半
開位置に至らせるように動作させる無段開閉機構を具
え、且つ前記負圧式アクチュエータは吸気マニホルド負
圧が設定負圧以下となったとき前記制御弁を前記無段開
閉機構に関係なく全開位置に動作させるように構成され
ていることを特徴とする吸気制御弁装置。1. A branch of an intake manifold connected to one combustion chamber of an engine has two intake passages, and a control valve which is opened and closed by a negative pressure type actuator operated by a negative pressure of the intake manifold is provided. In the intake control valve device for an engine provided in one of the two intake passages, the control valve is set to a fully closed position until the throttle valve is opened from an idle position to a certain opening position. And a stepless opening / closing mechanism for operating the control valve from the fully closed position to the half-open position regardless of the negative pressure type actuator in conjunction with the throttle valve when reaching the fully open position, and the negative pressure type actuator Is configured to operate the control valve to a fully open position regardless of the stepless opening / closing mechanism when the intake manifold negative pressure becomes equal to or less than a set negative pressure. Intake control valve unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1319443A JP2984705B2 (en) | 1989-12-08 | 1989-12-08 | Engine intake control valve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1319443A JP2984705B2 (en) | 1989-12-08 | 1989-12-08 | Engine intake control valve device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03182642A JPH03182642A (en) | 1991-08-08 |
| JP2984705B2 true JP2984705B2 (en) | 1999-11-29 |
Family
ID=18110258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1319443A Expired - Lifetime JP2984705B2 (en) | 1989-12-08 | 1989-12-08 | Engine intake control valve device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2984705B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101220349B1 (en) * | 2006-08-24 | 2013-01-09 | 현대자동차주식회사 | Structure of throttle body directly connected with swirl control valve for diesel engine |
-
1989
- 1989-12-08 JP JP1319443A patent/JP2984705B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03182642A (en) | 1991-08-08 |
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