JPH02108852A - Air flow control device for internal combustion engines - Google Patents
Air flow control device for internal combustion enginesInfo
- Publication number
- JPH02108852A JPH02108852A JP63261544A JP26154488A JPH02108852A JP H02108852 A JPH02108852 A JP H02108852A JP 63261544 A JP63261544 A JP 63261544A JP 26154488 A JP26154488 A JP 26154488A JP H02108852 A JPH02108852 A JP H02108852A
- Authority
- JP
- Japan
- Prior art keywords
- air flow
- control device
- internal combustion
- flow control
- valve
- 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
- 238000002485 combustion reaction Methods 0.000 title claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 18
- 230000000694 effects Effects 0.000 claims description 5
- 230000001788 irregular Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
Landscapes
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は内燃機関用空気流量制御装置に係り、特にアイ
ドル安定性の向上に好適な空気流量制御装置に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air flow control device for an internal combustion engine, and particularly to an air flow control device suitable for improving idle stability.
従来のこの種装置は、実開昭５８−１８７６６８号公報
に記載のように、２つのバルブの上流側を接続した空気
流路の断面積が小さく、圧力変動が空気流量に影響を与
えていた。In conventional devices of this kind, as described in Japanese Utility Model Application No. 58-187668, the cross-sectional area of the air passage connecting the upstream sides of the two valves was small, and pressure fluctuations affected the air flow rate. .
上記従来技術は、２つのバルブが発生する力が逆向きに
なるように配置することで相殺されているが、空気流量
が小さいときは、２つのバルブの上流側の圧力は等しく
、相殺効果が得られる。しかし、空気流量が大きいとき
は、各バルブの上流側を接続する空気流路の断面積が小
さいため各バルブの上流側の圧力が異なり、圧力変動の
影響。In the above conventional technology, the forces generated by the two valves are offset by arranging them in opposite directions, but when the air flow rate is small, the pressures on the upstream sides of the two valves are equal, and there is no canceling effect. can get. However, when the air flow rate is large, the cross-sectional area of the air flow path connecting the upstream sides of each valve is small, so the pressure on the upstream side of each valve differs, resulting in the influence of pressure fluctuations.
空気流量の不規則な乱れの影響を受けるという問題点が
あった。There was a problem in that it was affected by irregular turbulence in the air flow rate.
本発明の目的は、構造が簡単で上記従来技術の問題点を
解決することができる内燃機関用空気流量制御装置を提
供することにある。An object of the present invention is to provide an air flow control device for an internal combustion engine that has a simple structure and can solve the problems of the prior art described above.
上記目的は、連動する２つのバルブの一方のバルブの上
流側と他方のバルブの上流側とを接続する空気流路の断
面積を十分に大きくして、上記２つのバルブの上流側の
圧力を等しくして圧損を低滅することにより達成するよ
うにした。The above purpose is to sufficiently increase the cross-sectional area of the air flow path that connects the upstream side of one valve and the upstream side of the other valve of two interlocking valves to reduce the pressure on the upstream side of the two valves. This was achieved by equalizing the pressure drop and reducing the pressure drop.
Ｃ作用〕
２つのバルブの上流側を接続する空気流路は、各バルブ
に大流量を流したときにも各バルブの上流側の圧力が等
しくなるように十分に流路断面積を大きくしたので、負
圧の変動の影響、不規則な空気流量の乱れによる空気流
量の不安定な挙動を排除することができる。C effect] The air flow path that connects the upstream sides of the two valves has a sufficiently large flow path cross-sectional area so that the pressure on the upstream side of each valve is equal even when a large flow rate flows through each valve. , the unstable behavior of air flow rate due to the influence of negative pressure fluctuation, irregular air flow turbulence can be eliminated.
以下本発明の一実施例を第１図〜第３図を用いて詳細に
説明する。An embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 3.
第１図は本発明の内燃機関用空気流量制御装置の一実施
例を示す縦断面図で、第２図は第１図のバルブ部分の構
造説明図である。第１図に示すように、電磁駆動装置１
は電流を流すことによってバルブ２を矢印中の方向に動
かす力を発生する。FIG. 1 is a longitudinal sectional view showing an embodiment of an air flow control device for an internal combustion engine according to the present invention, and FIG. 2 is a structural explanatory diagram of the valve portion of FIG. 1. As shown in FIG. 1, an electromagnetic drive device 1
generates a force that moves the valve 2 in the direction of the arrow by passing an electric current through it.
バルブ２は電磁駆動装置１の駆動力とスプリング３の逆
方向に働らく力とのつり合った位置で止まり、このバル
ブ２の動きによって空気流量を制御する。The valve 2 stops at a position where the driving force of the electromagnetic drive device 1 and the force acting in the opposite direction of the spring 3 are balanced, and the movement of the valve 2 controls the air flow rate.
このとき、圧力によって発生する力は、第２図に示すよ
うに、バルブ２に作用するが、バルブ２は、左側のバル
ブＡ２１と右側のバルブＢ２２が軸を介して一体となっ
ており、それぞれ圧力によって逆方向の力を発生するた
め相殺するようにしているが、従来はバルブＡ２１の上
流側とバルブＢ２２の上流側とを接続する空気流路の断
面積が小さかったため、空気流量が大きいときは空気流
路４の圧力損失によってバルブＡ２１の上流側とバルブ
Ｂ２２の上流側の圧力が異なっていた。そこで、本発明
の実施例においては、空気流路４の断面積を十分大きく
した。これにより、空気流量が大きい場合でも、バルブ
Ａ２１の上流側とバルブＢ２２の上流側の圧力が等しく
なり、圧力の影響を受けず、電磁駆動装置１とスプリン
グ３の発生する力のつり合いによって決まるため、電気
信号の制御でその移動が決まる。また、空気流路４の断
面積を十分大きくとると、空気流路４で発生する空気流
量の乱れを抑制できるため、バルブ２の不規則な挙動を
同時に防止できる。また、第３図に示すように、外観、
外形寸法を全く変更せずに対応でき、しかも、ボテ−５
の鋳造、加工に関しても全く工程を増やすことなく対処
できる。At this time, the force generated by the pressure acts on the valve 2, as shown in FIG. Pressure generates a force in the opposite direction, so it is offset, but in the past, the cross-sectional area of the air flow path connecting the upstream side of valve A21 and the upstream side of valve B22 was small, so when the air flow rate was large, The pressures on the upstream side of valve A21 and the upstream side of valve B22 were different due to pressure loss in the air flow path 4. Therefore, in the embodiment of the present invention, the cross-sectional area of the air flow path 4 is made sufficiently large. As a result, even when the air flow rate is large, the pressures on the upstream side of valve A21 and the upstream side of valve B22 are equal, and are not affected by pressure, but are determined by the balance of forces generated by electromagnetic drive device 1 and spring 3. , its movement is determined by control of electrical signals. Furthermore, if the cross-sectional area of the air flow path 4 is made sufficiently large, disturbances in the air flow rate occurring in the air flow path 4 can be suppressed, and irregular behavior of the valve 2 can be prevented at the same time. In addition, as shown in Figure 3, the appearance,
This can be done without changing the external dimensions at all, and the size of the body is 5.
Casting and processing can be handled without adding any additional steps.
以上説明した本発明によれば、２つのバルブの上流側の
圧力を等しくできるので、負圧の影響。According to the present invention described above, the pressures on the upstream sides of the two valves can be equalized, thereby eliminating the influence of negative pressure.
流量特性の不規則な挙動を抑制できるという効果がある
。This has the effect of suppressing irregular behavior of flow characteristics.
第１図は本発明の内燃機関用空気流量制御装置の一実施
例を示す縦断面図、第２図は第１図のバルブ部分の構造
説明図、第３図は第１図のＡ−Ａ線断面図である。FIG. 1 is a vertical cross-sectional view showing an embodiment of the air flow control device for an internal combustion engine according to the present invention, FIG. 2 is a structural explanatory diagram of the valve portion of FIG. 1, and FIG. 3 is a line A-A in FIG. FIG.
Claims (1)
用を受けないように２つのバルブに分けた空気流量制御
装置において、前記絞りバルブの２つに分けたバルブの
上流側を接続する空気流路の断面積を十分に拡大して前
記２つのバルブの上流側の圧力が等しくなり広範囲の空
気流量でも相殺作用を行う構成としたことを特徴とする
内燃機関用空気流量制御装置。1. In an air flow control device in which the throttle valve of an automobile internal combustion engine is divided into two valves so as not to be affected by the pressure inside the device, the air connecting the upstream side of the two divided valves of the throttle valve An air flow control device for an internal combustion engine, characterized in that the cross-sectional area of the flow path is sufficiently expanded so that the pressures on the upstream sides of the two valves are equalized so that a canceling effect can be performed even in a wide range of air flow rates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63261544A JPH02108852A (en) | 1988-10-19 | 1988-10-19 | Air flow control device for internal combustion engines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63261544A JPH02108852A (en) | 1988-10-19 | 1988-10-19 | Air flow control device for internal combustion engines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02108852A true JPH02108852A (en) | 1990-04-20 |
Family
ID=17363372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63261544A Pending JPH02108852A (en) | 1988-10-19 | 1988-10-19 | Air flow control device for internal combustion engines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02108852A (en) |
-
1988
- 1988-10-19 JP JP63261544A patent/JPH02108852A/en active Pending
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