JPS6315548Y2 - - Google Patents
Info
- Publication number
- JPS6315548Y2 JPS6315548Y2 JP1981034001U JP3400181U JPS6315548Y2 JP S6315548 Y2 JPS6315548 Y2 JP S6315548Y2 JP 1981034001 U JP1981034001 U JP 1981034001U JP 3400181 U JP3400181 U JP 3400181U JP S6315548 Y2 JPS6315548 Y2 JP S6315548Y2
- Authority
- JP
- Japan
- Prior art keywords
- passage
- valve
- shutter valve
- intake passage
- opens
- 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
Links
- 230000007246 mechanism Effects 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 239000000446 fuel Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Description
【考案の詳細な説明】
本考案は、一部の気筒に通じる吸気通路にシヤ
ツタバルブが設けられ、エンジンのアイドリング
及び減速運転時にこのシヤツタバルブが閉じられ
るようになつた多気筒エンジン、殊にそのような
多気筒エンジンにおけるシヤツタバルブ装置に関
する。[Detailed Description of the Invention] The present invention is particularly applicable to multi-cylinder engines in which a shutter valve is provided in the intake passage leading to some of the cylinders, and the shutter valve is closed during engine idling and deceleration operation. The present invention relates to a shutter valve device in a multi-cylinder engine.
一般のエンジンにおいては、アイドリング運転
時又は減速運転時には新気の充填効率が低下し、
気筒内の残留燃焼ガスに対する吸入混合気の比率
が少くなる。このため、エンジンの運転状態が不
安定になり、排気中の有害成分の増加、燃料消費
量の増大等の問題を生ずる。この問題を解決する
方法として、多気筒エンジンにおいて、一部の気
筒に通じる吸気通路にシヤツタバルブを設け、エ
ンジンのアイドリング及び減速運転時に、このシ
ヤツタバルブを閉じて混合気を残りの気筒にすべ
て導くようにして、これら気筒での充填効率を高
めるようにすることが提案されている。この場
合、シヤツタバルブの設けられた吸気通路には、
全閉位置におけるシヤツタバルブより下流側に開
口する空気通路を設け、シヤツタバルブの閉じた
とき、該空気通路が開かれるようにして、この吸
気通路に通じる気筒には、空気のみが送られるよ
うにし、シヤツタバルブ全閉時の締切効果を向上
させるとともに、排気ガスの浄化に必要な２次エ
アとして利用している。 In general engines, the filling efficiency of fresh air decreases during idling or decelerating operation,
The ratio of the intake air-fuel mixture to the residual combustion gas in the cylinder decreases. As a result, the operating state of the engine becomes unstable, leading to problems such as an increase in harmful components in the exhaust gas and an increase in fuel consumption. As a way to solve this problem, in a multi-cylinder engine, a shutter valve is installed in the intake passage leading to some cylinders, and when the engine is idling or decelerating, this shutter valve is closed to guide all the air-fuel mixture to the remaining cylinders. Therefore, it has been proposed to increase the filling efficiency in these cylinders. In this case, in the intake passage where the shutter valve is installed,
An air passage is provided that opens downstream of the shutter valve in the fully closed position, and when the shutter valve is closed, the air passage is opened so that only air is sent to the cylinder communicating with this intake passage. In addition to improving the shutoff effect when fully closed, it is also used as secondary air necessary for purifying exhaust gas.
従来のこの種エンジンにおいては、実開昭55−
119329号公報に示すようにシヤツタバルブは負圧
作動式の駆動装置により、吸気通路の外部に設け
たリンク機構を介して駆動されるようになつてお
り、駆動装置は、空気通路を開閉する弁機構を備
えている。このような従来の構造においては、シ
ヤツタバルブ作動のためのリンク機構が外部に露
出して設けられるため、その関節結合部にごみ等
の異物が付着して作動障害を生ずることがある。 In conventional engines of this type,
As shown in Publication No. 119329, the shutter valve is driven by a negative pressure-operated drive device via a link mechanism provided outside the intake passage, and the drive unit is a valve mechanism that opens and closes the air passage. It is equipped with In such a conventional structure, since the link mechanism for operating the shutter valve is provided to be exposed to the outside, foreign matter such as dust may adhere to the joint portion of the link mechanism, resulting in operational failure.
本考案は、シヤツタバルブを備えた多気筒エン
ジンにおいて、シヤツタバルブ駆動のためのリン
ク機構がすべて通路内部に設けられるようにし
て、上述の問題を解決することを目的とする。 An object of the present invention is to solve the above-mentioned problems by providing all link mechanisms for driving the shutter valve inside the passage in a multi-cylinder engine equipped with a shutter valve.
すなわち、本考案の装置は、シヤツタバルブの
閉位置においてその下流側に開口する空気通路
が、空気供給源に連通しかつ吸気通路に対してほ
ぼ平行に配設される上流側通路と前記吸気通路に
対してほぼ垂直に配設されかつ該吸気通路に開口
する下流側通路とにより構成され、前記弁装置
は、前記上流側通路と前記上流側通路との間に配
置された弁材を有し、前記シヤツタバルブを開閉
駆動する駆動装置は、前記弁材に連動しかつ前記
下流側通路を貫通して吸気通路内に延び前記シヤ
ツタバルブに連結された駆動部材からなるリンク
機構により構成され、前記シヤツタバルブが閉じ
られたとき前記弁装置が開かれるようになつたこ
とを特徴とする。駆動装置としては、従来のシヤ
ツタバルブ装置におけると同様に、負圧応答式の
ダイヤフラム装置を用いることが好ましいが、本
考案は、負圧式の作動装置を用いるものに限定さ
れない。 That is, in the device of the present invention, when the shutter valve is in the closed position, the air passage that opens on the downstream side is connected to the upstream passage that communicates with the air supply source and is arranged approximately parallel to the intake passage. a downstream passage disposed substantially perpendicularly to the intake passage and opening into the intake passage, the valve device having a valve material disposed between the upstream passage and the upstream passage; The drive device for opening and closing the shutter valve is constituted by a link mechanism including a drive member that is interlocked with the valve material, extends into the intake passage through the downstream passage, and is connected to the shutter valve. The valve device is characterized in that the valve device is opened when the valve is opened. It is preferable to use a negative pressure responsive diaphragm device as the drive device, as in conventional shutter valve devices, but the present invention is not limited to the use of a negative pressure actuating device.
以下、本考案の実施例を図について説明する
と、まず第１図において、エンジン１は複数の気
筒Ｇ１，Ｇ２を有し、これら気筒Ｇ１，Ｇ２には
それぞれ吸気通路２，３が設けられている。吸気
通路２，３には、それぞれ絞り弁４，５が配置さ
れ、吸気通路２には、さらに絞り弁４の下流側に
シヤツタバルブ６が設けられている。吸気通路
２，３間には、一方では弁４，６間で吸気通路２
に開口し、他方では絞り弁５の下流側で吸気通路
３に開口する連通路７が形成されている。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First, in FIG. 1, an engine 1 has a plurality of cylinders G1 and G2, and intake passages 2 and 3 are provided in these cylinders G1 and G2, respectively. . Throttle valves 4 and 5 are arranged in the intake passages 2 and 3, respectively, and a shutter valve 6 is further provided in the intake passage 2 on the downstream side of the throttle valve 4. Between the intake passages 2 and 3, on the other hand, between the valves 4 and 6, the intake passage 2
A communication passage 7 is formed which opens into the intake passage 3 on the downstream side of the throttle valve 5 on the other hand.
シヤツタバルブ６は負圧ダイヤフラム式の駆動
装置８により駆動されるように、その駆動部材８
ａに連結されている。吸気通路２には、シヤツタ
バルブ６の閉位置より下流側において空気通路９
が開口しており、駆動装置８は、後述するよう
に、この空気通路９を開閉するための弁機構を有
する。駆動装置８のダイヤフラムに与えられる負
圧は、シヤツタバルブ６より下流側において吸気
通路２に開口する負圧通路１０を介して供給さ
れ、該負圧通路１０には電磁弁１１が設けられて
いる。電磁弁１１は、スイツチ１２を介して電源
１３から供給される電流により制御される。気筒
Ｇ１，Ｇ２には、排気マニホルド１４が接続され
ている。 The shutter valve 6 is driven by a driving member 8 of a negative pressure diaphragm type.
connected to a. The intake passage 2 includes an air passage 9 downstream from the closed position of the shutter valve 6.
is open, and the drive device 8 has a valve mechanism for opening and closing this air passage 9, as will be described later. Negative pressure applied to the diaphragm of the drive device 8 is supplied via a negative pressure passage 10 that opens into the intake passage 2 on the downstream side of the shutter valve 6, and the negative pressure passage 10 is provided with a solenoid valve 11. The solenoid valve 11 is controlled by a current supplied from a power source 13 via a switch 12. An exhaust manifold 14 is connected to the cylinders G1 and G2.
第２図を参照すると、空気通路９は上流端が空
気供給源のエアクリーナ（図示せず）に開放され
た上流側通路９ａと、下流端が吸気通路２に開口
する下流側通路９ｂとからなり、通路９ａ，９ｂ
間に弁座９ｃが形成されている。駆動装置８は、
ダイヤフラム８ｂを有し、該ダイヤフラム８ｂに
駆動部材８ａの一端が結合されている。ダイヤフ
ラム８ｂの背後には負圧室８ｃが形成され、該負
圧室８ｃには負圧通路１０が接続されている。駆
動部材８ａは下流側通路９ｂを貫通して吸気通路
２内に延びており、ダイヤフラム８ｂ上には、弁
座９ｃに対応する位置に弁材８ｄが設けられてい
る。負圧室８ｃ内にはスプリング８ｅが配置され
てダイヤフラム８ｂを付勢し、弁材８ｄを弁座９
ｃに向けて、またシヤツタバルブ６を開位置へ向
けて押している。 Referring to FIG. 2, the air passage 9 consists of an upstream passage 9a whose upstream end is open to an air cleaner (not shown) serving as an air supply source, and a downstream passage 9b whose downstream end is open to the intake passage 2. , passages 9a, 9b
A valve seat 9c is formed between them. The drive device 8 is
It has a diaphragm 8b, and one end of a driving member 8a is coupled to the diaphragm 8b. A negative pressure chamber 8c is formed behind the diaphragm 8b, and a negative pressure passage 10 is connected to the negative pressure chamber 8c. The drive member 8a extends into the intake passage 2 through the downstream passage 9b, and a valve member 8d is provided on the diaphragm 8b at a position corresponding to the valve seat 9c. A spring 8e is disposed within the negative pressure chamber 8c to bias the diaphragm 8b and push the valve material 8d against the valve seat 9.
c and the shutter valve 6 is pushed toward the open position.
エンジンのアイドリング又は減速運転時には、
スイツチ１２が閉じて電磁弁１１を開き、負圧が
通路１０から負圧室８ｃに導入するため、ダイヤ
フラム８ｂはスプリング８ｅの作用に抗して引か
れる。したがつて、シヤツタバルブ６は閉位置に
動かされ、弁材８ｄは弁座９ｃから離れて空気通
路９を開く。この状態では、絞り弁４を通過した
混合気は、連通路７を通つて吸気通路３から気筒
Ｇ２に導かれ、気筒Ｇ１には、空気通路９からの
空気が導入される。本考案においては、駆動装置
の可動部が外部に全く露出されないので、この可
動部にごみ等の異物が付着して作動に障害を生じ
る恐れがなくなる。また、駆動装置の駆動部材が
外部に露出せずシヤツタバルブ装置をコンパクト
にできる利点がある。 When the engine is idling or decelerating,
Since the switch 12 closes and the solenoid valve 11 opens, and negative pressure is introduced from the passage 10 into the negative pressure chamber 8c, the diaphragm 8b is pulled against the action of the spring 8e. Therefore, the shutter valve 6 is moved to the closed position, and the valve member 8d moves away from the valve seat 9c to open the air passage 9. In this state, the air-fuel mixture that has passed through the throttle valve 4 is guided from the intake passage 3 to the cylinder G2 through the communication passage 7, and air from the air passage 9 is introduced into the cylinder G1. In the present invention, since the movable part of the drive device is not exposed to the outside at all, there is no possibility that foreign matter such as dust may adhere to the movable part and cause trouble in its operation. Further, there is an advantage that the drive member of the drive device is not exposed to the outside, and the shutter valve device can be made compact.
第１図は本考案の一実施例を示す多気筒エンジ
ンの概略図、第２図はそのシヤツタバルブ装置の
断面図である。
２，３……吸気通路、４，５……絞り弁、６…
…シヤツタバルブ、８……駆動装置、８ａ……駆
動部材、８ｂ……ダイヤフラム、８ｄ……弁材、
９……空気通路、９ａ……上流側通路、９ｂ……
下流側通路、９ｃ……弁座。
FIG. 1 is a schematic diagram of a multi-cylinder engine showing an embodiment of the present invention, and FIG. 2 is a sectional view of its shutter valve device. 2, 3... Intake passage, 4, 5... Throttle valve, 6...
...Shutter valve, 8...Driving device, 8a...Driving member, 8b...Diaphragm, 8d...Valve material,
9...Air passage, 9a...Upstream passage, 9b...
Downstream passage, 9c...valve seat.
Claims (1)
に、駆動装置によつて開閉制御されるシヤツタバ
ルブと、全閉位置にあるシヤツタバルブより下流
側において前記吸気通路に開口する空気通路と、
前記空気通路を開閉する弁装置とを有し、エンジ
ンのアイドリング運転時及び減速運転時に前記シ
ヤツタバルブを閉じ前記空気通路を開くようにな
つた多気筒エンジンのシヤツタバルブ装置におい
て、前記空気通路が、空気供給源に連通しかつ吸
気通路に対してほぼ平行に配設される上流側通路
と前記吸気通路に対してほぼ垂直に配設されかつ
該吸気通路に開口する下流側通路とにより構成さ
れ、前記弁装置は、前記上流側通路と前記下流側
通路との間に配置された弁材を有し、前記シヤツ
タバルブを開閉駆動する駆動装置は、前記弁材に
連動しかつ前記下流側通路を貫通して吸気通路内
に延び前記シヤツタバルブに連結された駆動部材
からなるリンク機構により構成され、前記シヤツ
タバルブが閉じられたとき前記弁装置が開かれる
ようになつたことを特徴とする、多気筒エンジン
のシヤツタバルブ装置。 A shutter valve that is controlled to open and close by a drive device in an intake passage leading to some cylinders of a multi-cylinder engine, and an air passage that opens into the intake passage downstream of the shutter valve that is in a fully closed position.
In the shutter valve device for a multi-cylinder engine, the shutter valve device includes a valve device that opens and closes the air passage, and closes the shutter valve and opens the air passage when the engine is idling and decelerating. an upstream passage that communicates with the source and is disposed approximately parallel to the intake passage; and a downstream passage that is disposed approximately perpendicularly to the intake passage and opens into the intake passage; The device includes a valve material disposed between the upstream passage and the downstream passage, and a drive device that opens and closes the shutter valve is interlocked with the valve material and extends through the downstream passage. A shutter valve device for a multi-cylinder engine, comprising a link mechanism including a driving member extending into an intake passage and connected to the shutter valve, the valve device being opened when the shutter valve is closed. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981034001U JPS6315548Y2 (en) | 1981-03-11 | 1981-03-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981034001U JPS6315548Y2 (en) | 1981-03-11 | 1981-03-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57145741U JPS57145741U (en) | 1982-09-13 |
| JPS6315548Y2 true JPS6315548Y2 (en) | 1988-05-02 |
Family
ID=29831331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981034001U Expired JPS6315548Y2 (en) | 1981-03-11 | 1981-03-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6315548Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52121132A (en) * | 1976-04-05 | 1977-10-12 | Mazda Motor Corp | Intake unit in multi cylinder engine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5648914Y2 (en) * | 1979-02-17 | 1981-11-14 |
-
1981
- 1981-03-11 JP JP1981034001U patent/JPS6315548Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52121132A (en) * | 1976-04-05 | 1977-10-12 | Mazda Motor Corp | Intake unit in multi cylinder engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57145741U (en) | 1982-09-13 |
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