JPH0720344Y2 - Multi-cylinder engine intake system - Google Patents
Multi-cylinder engine intake systemInfo
- Publication number
- JPH0720344Y2 JPH0720344Y2 JP1987165185U JP16518587U JPH0720344Y2 JP H0720344 Y2 JPH0720344 Y2 JP H0720344Y2 JP 1987165185 U JP1987165185 U JP 1987165185U JP 16518587 U JP16518587 U JP 16518587U JP H0720344 Y2 JPH0720344 Y2 JP H0720344Y2
- Authority
- JP
- Japan
- Prior art keywords
- chambers
- surge tank
- intake
- partition wall
- intake air
- 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
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- Characterised By The Charging Evacuation (AREA)
Description
【考案の詳細な説明】 (産業上の利用分野) 本考案は、多気筒エンジンの吸気装置に関し、特に、エ
ンジン回転数に応じてサージタンクの容量を変えて吸気
の共振周波数を変化させるようにしたものに関するもの
である。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an intake system for a multi-cylinder engine, and more particularly to changing the capacity of a surge tank according to the engine speed to change the resonance frequency of intake air. It is about what you did.
(従来の技術) 従来より、エンジンの気筒内燃焼室に吸入される吸気の
動的効果によってその充填効率を高め、エンジンの出力
トルクを増大させるようにしたものは種々知られてい
る。その一例として、例えば特公昭60−14169号公報に
示されるものでは、多気筒エンジンにおける吸気通路
を、吸気順序(点火順序)の連続しない気筒を同じグル
ープとする気筒グループにそれぞれ接続される2つの吸
気通路に分け、その各々の吸気通路を、吸気マニホール
ドのブランチ部上流端が接続されたサージタンクと、こ
のサージタンクに接続された共鳴吸気通路とで構成する
とともに、該共鳴吸気通路の上流端を集合室に連通さ
せ、上記サージタンクに、その内部を2室に仕切る仕切
壁を設け、上記2室(両吸気通路同士)を連通または連
通遮断する切換弁等の切換装置を設け、該切換弁をエン
ジンの回転域に応じて開閉することにより、吸気の共振
状態を変えて過給するようにしたものが知られている。(Prior Art) Conventionally, various types are known in which the charging efficiency is increased by the dynamic effect of intake air sucked into a combustion chamber in a cylinder of an engine, and the output torque of the engine is increased. For example, in Japanese Patent Publication No. 60-14169, for example, the intake passage in a multi-cylinder engine is connected to two cylinder groups in which cylinders whose intake order (ignition order) is not continuous belong to the same group. It is divided into intake passages, and each of the intake passages is composed of a surge tank to which the upstream end of the branch portion of the intake manifold is connected and a resonance intake passage connected to this surge tank, and the upstream end of the resonance intake passage. To the collecting chamber, the surge tank is provided with a partition wall that divides the interior into two chambers, and a switching device such as a switching valve that connects or disconnects the two chambers (both intake passages) is provided, and the switching is performed. It is known that the valve is opened and closed according to the engine rotation range to change the resonance state of intake air to supercharge.
すなわち、このものは、エンジンの低回転域では、切換
装置によりサージタンク内の2室同士(吸気通路同士)
の連通を遮断することにより、各気筒グループにおける
各気筒の吸気行程に生じた吸気の負の圧力波を上流側に
伝播させて上記集合室での反射により正の圧力波に反転
させ、その反転した正の圧力波を下流側に戻して同じ気
筒グループの他の気筒の吸気行程に作用させる吸気の共
鳴過給効果を発揮させる一方、エンジンの高回転域で
は、切換装置によりサージタンク内の2室を互いに連通
させることにより、上記吸気圧力波の反転反射位置をサ
ージタンクとし吸気ポートに近付けて、吸気圧力振動の
固有振動数を高くし、同じ気筒グループの同じ気筒の吸
気行程に作用させる吸気の慣性過給効果を得るようにな
されている。In other words, in the low engine speed range, this device uses the switching device to connect two chambers (intake passages) in the surge tank.
, The negative pressure wave of the intake air generated in the intake stroke of each cylinder in each cylinder group is propagated to the upstream side and is reflected by the collecting chamber to be inverted to the positive pressure wave. The positive pressure wave is returned to the downstream side to exert the resonance supercharging effect of the intake air that acts on the intake stroke of the other cylinders in the same cylinder group. By connecting the chambers with each other, the reverse reflection position of the intake pressure wave is used as a surge tank and brought close to the intake port to increase the natural frequency of the intake pressure vibration, and the intake stroke to act on the intake stroke of the same cylinder in the same cylinder group. Is designed to obtain the effect of inertia supercharging.
(考案が解決しようとする課題) ところで、上記の如き吸気の共鳴過給状態では、サージ
タンク容量が大きいと、吸気の圧力波が効率よく伝播さ
れないので、該サージタンク容量は小さい方が好まし
い。これに対し、慣性過給の場合には、サージタンク容
量が大きい程、圧力波が直ちに反射されて戻るので好ま
しい。しかし、上記従来のものでは、サージタンク容量
が一定であるので、上記共鳴効果および慣性効果をいず
れも効果的に発揮させるのが難しいという問題があっ
た。(Problems to be Solved by the Invention) In the resonance supercharging state of the intake air as described above, if the surge tank capacity is large, the pressure wave of the intake air is not efficiently propagated. Therefore, the surge tank capacity is preferably small. On the other hand, in the case of inertia supercharging, a larger surge tank capacity is preferable because the pressure wave is immediately reflected and returned. However, since the surge tank capacity is constant in the conventional device, it is difficult to effectively exhibit both the resonance effect and the inertial effect.
本考案は斯かる諸点に鑑みてなされたものであり、その
目的は、サージタンク内に形成される2室を連通または
連通遮断する弁の動作を利用して、自動的にサージタン
ク容量を増減変更できるようにし、よって吸気通路内の
気柱振動による良好な吸気の動的過給効果が得られるよ
うにすることにある。The present invention has been made in view of the above points, and an object thereof is to automatically increase or decrease the surge tank capacity by utilizing the operation of a valve that connects or disconnects two chambers formed in the surge tank. Therefore, it is possible to obtain a good dynamic supercharging effect of intake air due to air column vibration in the intake passage.
(課題を解決するための手段) 上記目的を達成するため、本考案の解決手段は、上記の
如く、サージタンク内を仕切壁により2室に分割して、
その各室に点火時期の隣り合わない気筒同士を接続し、
かつ該各室に吸気を供給する2本の吸気供給通路をそれ
ぞれ接続し、エンジンの高回転域で上記吸気供給通路と
は別個に設けられた通路により上記2室を連通させるよ
うにした多気筒エンジンの吸気装置において、上記サー
ジタンク内で上記仕切壁の一端部側にその2室に連通す
る1つの空間を形成するボリューム部を設ける。(Means for Solving the Problem) In order to achieve the above object, the solution means of the present invention is, as described above, divided the surge tank into two chambers by a partition wall,
Connect cylinders whose ignition timings are not adjacent to each other,
A multi-cylinder in which two intake supply passages for supplying intake air to the respective chambers are connected to each other, and the two chambers are communicated with each other by a passage provided separately from the intake supply passage in a high engine speed region. In the engine intake device, a volume portion is provided in the surge tank at one end side of the partition wall to form one space communicating with the two chambers.
さらに、上記仕切壁の一端部に回転可能なシャッタ弁を
設けて、該シャッタ弁を仕切壁と略直角方向に回転させ
た状態では、サージタンク内の2室同士間の連通および
該2室とボリューム部内空間との連通をそれぞれ遮断
し、一方、シャッタ弁をその他の回転状態とすると、サ
ージタンク内の2室同士および該2室とボリューム部内
空間とをそれぞれ連通させるように構成する。Further, when a rotatable shutter valve is provided at one end of the partition wall and the shutter valve is rotated in a direction substantially perpendicular to the partition wall, communication between the two chambers in the surge tank and the two chambers are established. When the communication with the volume internal space is blocked, and the shutter valve is in the other rotation state, the two chambers in the surge tank and the two chambers are connected with the volume internal space.
(作用) この構成により、本考案では、エンジンの低回転域で
は、シャッタ弁がサージタンク内の仕切壁と略直角方向
に回転して、そのシャッタ弁によりサージタンク内の2
室同士および該2室とボリューム部内の空間との連通が
遮断される。このため、エンジンの気筒に2室のみが連
通して、サージタンク容量が小さくなり、よって2室お
よび該2室に接続される吸気供給通路による吸気の共鳴
過給効果が良好に発揮されることとなる。(Operation) With this configuration, in the present invention, in the low rotation range of the engine, the shutter valve rotates in a direction substantially at right angles to the partition wall in the surge tank, and the shutter valve causes 2
The communication between the chambers and between the two chambers and the space inside the volume portion is cut off. Therefore, only the two chambers communicate with the cylinder of the engine, and the surge tank capacity is reduced, so that the resonance supercharging effect of intake air by the two chambers and the intake supply passage connected to the two chambers can be excellently exhibited. Becomes
一方、エンジンの高回転域では、シャッタ弁が略サージ
タンク内の仕切壁に沿う方向に回転して、サージタンク
内の2室同士および該2室とボリューム部内の空間とが
連通される。このため、気筒がサージタンクの2室のみ
ならずボリューム部内の空間にも連通して、サージタン
ク容量が大きくなり、よって2室の連通に伴う吸気の慣
性過給効果等を良好に発揮できることとなる。On the other hand, in the high rotation range of the engine, the shutter valve rotates substantially in the direction along the partition wall in the surge tank, and the two chambers in the surge tank and the two chambers and the space in the volume portion communicate with each other. Therefore, the cylinder communicates not only with the two chambers of the surge tank but also with the space inside the volume section, and the capacity of the surge tank is increased, so that the inertia supercharging effect of the intake air due to the communication of the two chambers can be satisfactorily exhibited. Become.
よって、シャッタ弁の開閉動作に連動してサージタンク
の容量が自動的に変わり、それぞれの状態に応じた吸気
通路内の気柱振動による吸気の動的過給効果を効果的に
得ることができるのである。Therefore, the capacity of the surge tank automatically changes in association with the opening / closing operation of the shutter valve, and the dynamic supercharging effect of intake air due to the air column vibration in the intake passage corresponding to each state can be effectively obtained. Of.
(実施例) 以下、本考案の実施例を図面に基づいて説明する。Embodiment An embodiment of the present invention will be described below with reference to the drawings.
第2図は本考案の実施例の全体構成を示し、1は第1〜
第6の6つの気筒2a〜2fを有するV型6気筒エンジンで
あって、上記6つの気筒2a〜2fの点火順序は気筒番号ど
おりに第1気筒2a〜第6気筒2fの順序に設定されてい
る。これら6つの気筒2a〜2fのうち、第1、第3および
第5気筒2a,2c,2eの3つの気筒はエンジン1のV型に配
置された左側(図で下側)のバンク1aに、また残りの第
2、第4および第6気筒2b,2d,2fは右側(同上側)のバ
ンク1bにそれぞれ前側(図で左側)から順に形成されて
いる。FIG. 2 shows the overall construction of an embodiment of the present invention, in which 1 is the first to the first.
In a V-type 6-cylinder engine having a sixth six cylinders 2a to 2f, the ignition order of the six cylinders 2a to 2f is set to the order of the first cylinder 2a to the sixth cylinder 2f according to the cylinder number. There is. Of these six cylinders 2a to 2f, the three cylinders of the first, third and fifth cylinders 2a, 2c, 2e are located in the bank 1a on the left side (lower side in the figure) of the V type of the engine 1. The remaining second, fourth, and sixth cylinders 2b, 2d, 2f are formed in the right (upper side) bank 1b in order from the front side (left side in the drawing).
上記エンジン1の左右バンク1a,1b間には吸気通路3の
一部を形成するサージタンク4が配設され、該サージタ
ンク4内の吸気通路3は気筒2a〜2fに対し独立吸気通路
5a〜5fを介して接続されている。また、サージタンク4
はその後端部にて左右1対の吸気供給通路6,6と連通さ
れ、該両吸気供給通路6,6の上流端は図示しないが互い
に合流されてエアクリーナに接続され、該エアクリーナ
下流の吸気供給通路6,6の合流部には吸入空気量を検出
するエアフローメータが、また該エアフローメータ下流
の吸気供給通路6,6には吸気通路3を絞るスロットル弁
がそれぞれ配設されている。A surge tank 4 forming a part of the intake passage 3 is arranged between the left and right banks 1a, 1b of the engine 1, and the intake passage 3 in the surge tank 4 is an independent intake passage for the cylinders 2a to 2f.
Connected via 5a-5f. Also, surge tank 4
Is communicated with a pair of left and right intake air supply passages 6,6 at its rear end, and the upstream ends of both intake air supply passages 6,6 are joined to each other and connected to an air cleaner (not shown), and the intake air supply downstream of the air cleaner is connected. An air flow meter for detecting the intake air amount is provided at the confluence of the passages 6,6, and a throttle valve for narrowing the intake passage 3 is provided in the intake supply passages 6,6 downstream of the air flow meter.
さらに、第1図に拡大詳示するように、上記サージタン
ク4の内部はその左右中央部で前後方向(図で左右方
向)に延びる仕切壁4aにより各々吸気通路3の一部を構
成する左側室10aと右側室10bとに分割され、左側室10a
には上記左側のバンク1aに形成された気筒グループの点
火時期の隣り合わない第1気筒2a、第3気筒2cおよび第
5気筒2eと、左側の吸気供給通路6とが接続されてい
る。一方、右側室10bには上記右側のバンク1bに形成さ
れた気筒グループの点火時期の隣り合わない第2気筒2
b、第4気筒2dおよび第6気筒2fと、右側の吸気供給通
路6とが接続されている。Further, as shown in an enlarged detail in FIG. 1, the inside of the surge tank 4 has a partition wall 4a extending in the front-rear direction (left-right direction in the figure) at the left and right central portions thereof, each of which constitutes a part of the intake passage 3 on the left side. Room 10a and right room 10b are divided into left room 10a
The first cylinder 2a, the third cylinder 2c, and the fifth cylinder 2e whose ignition timings of the cylinder groups formed in the left bank 1a are not adjacent to each other are connected to the left intake supply passage 6. On the other hand, in the right side chamber 10b, the second cylinder 2 in which the ignition timings of the cylinder groups formed in the right side bank 1b are not adjacent to each other
b, the fourth cylinder 2d and the sixth cylinder 2f are connected to the right intake supply passage 6.
また、上記サージタンク4内の前部には、内部に空間と
しての前側室11を有するボリューム部12が形成され、該
ボリューム部12内の前側室11はサージタンク4内の両室
10a,10bに対し開口部4bを通して連通されている。すな
わち、サージタンク4内の両室10a,10bは上記吸気供給
通路6,6とは別個に設けられている前側室11により互い
に連通されている。また、上記サージタンク4の内部に
は上記仕切壁4aの前端部近傍に、上下方向の回転軸13a
を持つ回転可能な板状のシャッタ弁13が配設され、該シ
ャッタ弁13の回転軸13aは、上記仕切壁4aの前方延長線
に対して右側(図で上側)にオフセットした位置でサー
ジタンク4の上下壁に支持されている。このシャッタ弁
13は上記開口部4bを開閉するもので、エンジン1の回転
域に応じて開閉される。すなわち、エンジン1の低回転
域では、シャッタ弁13を図で破線にて示す如く仕切壁4a
と直角になる閉じ位置に回転させることにより、サージ
タンク4前面の開口部4bを閉じてその内部の左側室10a
と右側室10bとの連通および該両室10a,10bとボリューム
部12内の前側室11との連通をそれぞれいずれも遮断する
一方、エンジン1の高回転域では、シャッタ弁13を仮想
線にて示す如く仕切壁4aと平行になる開き位置に回転さ
せることにより、サージタンク4前面の開口部4bを開い
て両室10a,10b同士および該両室10a,10bとボリューム部
12内の前側室11とをそれぞれ連通するように構成されて
いる。A volume portion 12 having a front chamber 11 as a space therein is formed in the front portion of the surge tank 4, and the front chamber 11 in the volume portion 12 is both chambers in the surge tank 4.
The openings 10a and 10b communicate with each other through the opening 4b. That is, the two chambers 10a, 10b in the surge tank 4 are communicated with each other by the front chamber 11 provided separately from the intake air supply passages 6, 6. Inside the surge tank 4, a vertical rotation shaft 13a is provided near the front end of the partition wall 4a.
A rotatable plate-shaped shutter valve 13 having a rotary shaft 13a of the shutter valve 13 is offset to the right side (upper side in the figure) with respect to the forward extension line of the partition wall 4a. It is supported by four upper and lower walls. This shutter valve
Reference numeral 13 is for opening and closing the opening 4b, which is opened and closed according to the rotation range of the engine 1. That is, in the low rotation range of the engine 1, the shutter valve 13 is divided into the partition wall 4a as shown by a broken line in the drawing.
By rotating it to a closed position that is at a right angle to, the opening 4b on the front surface of the surge tank 4 is closed and the left side chamber 10a inside thereof is closed.
And the right chamber 10b and the chambers 10a, 10b and the front chamber 11 in the volume unit 12 are both blocked, while the shutter valve 13 is shown by a virtual line in the high engine speed region. As shown, the opening 4b on the front surface of the surge tank 4 is opened by rotating it to an open position in parallel with the partition wall 4a, so that both chambers 10a, 10b are in contact with each other and both chambers 10a, 10b and the volume part.
It is configured to communicate with the front chamber 11 in each of the insides 12.
したがって、上記実施例においては、エンジン1の低回
転域で、シャッタ弁13がサージタンク4内の仕切壁4aと
直角になる閉じ位置に回転し、このシャッタ弁13により
サージタンク4内の左側室10aと右側室10bとの連通およ
び該両室10a,10bとボリューム部12内の前側室11との連
通がいずれも遮断される。この状態では、各気筒グルー
プにおける各気筒2a,2c,2e(又は2b,2d,2f)の吸気行程
に生じた吸気の負の圧力波がサージタンク4内の両室10
a,10bおよび該室10a,10bに接続された吸気供給通路6を
上流側に伝播して、その上流側合流部で正の圧力波に反
射反転し、その後、反転した正の圧力波が下流側に戻っ
て同じ気筒グループの他の気筒2a,2c,2e(又は2b,2d,2
f)の吸気行程に作用するという吸気の共鳴過給状態と
なり、このことにより吸気を過給することができる。Therefore, in the above-described embodiment, the shutter valve 13 rotates to the closed position at a right angle to the partition wall 4a in the surge tank 4 in the low rotation range of the engine 1, and the shutter valve 13 causes the left chamber in the surge tank 4 to rotate. Both the communication between 10a and the right side chamber 10b and the communication between both chambers 10a and 10b and the front side chamber 11 in the volume portion 12 are cut off. In this state, the negative pressure wave of the intake air generated in the intake stroke of each cylinder 2a, 2c, 2e (or 2b, 2d, 2f) in each cylinder group causes a negative pressure wave in both chambers 10 in the surge tank 4.
a, 10b and the intake supply passages 6 connected to the chambers 10a, 10b propagate to the upstream side, and are reflected and inverted to a positive pressure wave at the upstream merging portion, and then the inverted positive pressure wave is downstream. Back to the other cylinders of the same cylinder group 2a, 2c, 2e (or 2b, 2d, 2
Resonance supercharging of intake air that acts on the intake stroke of f), and intake air can be supercharged by this.
その際、エンジン1の各気筒2a〜2fにはサージタンク4
内の両室10a,10bのみが連通して、サージタンク容量が
小さくなっているので、上記吸気の共鳴過給状態におけ
る吸気の圧力波が効率よく伝播することとなり、よって
吸気の共鳴過給効果を良好に発揮させることができる。At that time, the surge tank 4 is installed in each cylinder 2a to 2f of the engine 1.
Since only the two chambers 10a, 10b in the interior communicate with each other and the surge tank capacity is small, the pressure wave of the intake air in the above resonance supercharging state of the intake air efficiently propagates, and thus the resonance supercharging effect of the intake air. Can be exhibited satisfactorily.
一方、エンジン1の高回転域では、シャッタ弁13がサー
ジタンク4内の仕切壁4aに沿う方向に回転して開き位置
に位置付けられ、サージタンク4内の両室10a,10b同士
が、また両室10a,10bとボリューム部12内の前側室11と
がそれぞれ連通される。この状態では、各気筒2a,2c,2e
(又は2b,2d,2f)の吸気行程に生じた吸気の負の圧力波
がサージタンク4内の両室10a,10bで正の圧力波に反射
反転した後、下流側に戻って同じ気筒グループの同じ気
筒2a,2c,2e(又は2b,2d,2f)の吸気行程に作用するとい
う吸気の慣性過給状態となり、このことにより吸気を過
給することができる。On the other hand, in the high rotation range of the engine 1, the shutter valve 13 is rotated in the direction along the partition wall 4a in the surge tank 4 and is positioned at the open position, so that both chambers 10a and 10b in the surge tank 4 are in contact with each other. The chambers 10a and 10b and the front chamber 11 in the volume section 12 are communicated with each other. In this state, each cylinder 2a, 2c, 2e
(Or 2b, 2d, 2f) negative pressure wave of intake air generated in the intake stroke is reflected and inverted to positive pressure wave in both chambers 10a, 10b in the surge tank 4, and then returns to the downstream side to return to the same cylinder group. Inertial supercharging of intake air that acts on the intake stroke of the same cylinder 2a, 2c, 2e (or 2b, 2d, 2f), and thus intake air can be supercharged.
そして、気筒2a〜2fがサージタンク4内の両室10a,10b
のみならずボリューム部12内の前側室11にも連通して、
吸気圧力波の伝播に関するサージタンク容量は大きく、
吸気の圧力波が直ちに反射して戻ることとなり、その結
果、上記吸気の慣性過給効果を良好に発揮することがで
きる。Then, the cylinders 2a to 2f are connected to both chambers 10a and 10b in the surge tank 4.
Not only communicate with the front chamber 11 in the volume section 12,
The surge tank capacity for the propagation of intake pressure waves is large,
The pressure wave of the intake air is immediately reflected and returned, and as a result, the inertia supercharging effect of the intake air can be exhibited well.
また、上記シャッタ弁13の回転軸13aがサージタンク4
の仕切壁4aの前方延長線に対して右側にオフセットして
いるので、シャッタ弁13を仕切壁4aと干渉することなく
該仕切壁4aと平行になる角度まで回転させて開くことが
でき、サージタンク4前面の開口部4bを最大に開いて、
タンク4内の両室10a,10bを前側室11に大きな通路断面
積で連通でき、上記慣性過給効果をより一層有効に発揮
させることができる。In addition, the rotary shaft 13a of the shutter valve 13 has the surge tank 4
Since it is offset to the right with respect to the forward extension line of the partition wall 4a, the shutter valve 13 can be opened by rotating it to an angle parallel to the partition wall 4a without interfering with the partition wall 4a. Open the opening 4b on the front of the tank 4 to the maximum,
Both chambers 10a, 10b in the tank 4 can be communicated with the front chamber 11 with a large passage cross-sectional area, and the above-mentioned inertia supercharging effect can be more effectively exhibited.
よって、シャッタ弁13の開閉動作に連動してサージタン
ク4の容量が自動的に変わり、それぞれの状態に応じた
吸気の共鳴効果および慣性効果を効果的に得ることがで
きる。Therefore, the capacity of the surge tank 4 automatically changes in association with the opening / closing operation of the shutter valve 13, and the resonance effect and the inertial effect of the intake air according to each state can be effectively obtained.
(考案の効果) 以上説明したように、本考案によると、多気筒エンジン
の吸気装置において、そのサージタンク内を2室に仕切
る仕切壁の端部に回転可能なシャッタ弁を設け、エンジ
ンの低回転域では、シャッタ弁を仕切壁と直角に回転さ
せて、サージタンク内の2室同士の連通および該2室と
サージタンクにおけるボリューム部内の空間との連通を
遮断する一方、高回転域では、シャッタ弁を他の状態と
して、サージタンク内の2室同士および該2室とボリュ
ーム部内の空間とを連通させるようにしたことにより、
シャッタ弁の開閉動作に連動してサージタンク容量を自
動的に変えて、それぞれの状態に応じた吸気通路内の気
柱振動による吸気の動的効果を効果的に得ることができ
るものである。(Effects of the Invention) As described above, according to the present invention, in the intake system for a multi-cylinder engine, a rotatable shutter valve is provided at the end of the partition wall that divides the surge tank into two chambers. In the rotation range, the shutter valve is rotated at a right angle to the partition wall to block the communication between the two chambers in the surge tank and the space between the surge tank and the volume section in the surge tank, while in the high rotation range, By setting the shutter valve in the other state so that the two chambers in the surge tank and the two chambers communicate with the space in the volume section,
The surge tank capacity is automatically changed in conjunction with the opening / closing operation of the shutter valve, and the dynamic effect of intake air due to air column vibration in the intake passage corresponding to each state can be effectively obtained.
図面は本考案の実施例を示し、第1図は要部の拡大平面
図、第2図は全体構成を示す模式平面図である。 1……エンジン、2a〜2f……気筒、4……シャッタ弁、
4a……仕切壁、6……吸気供給通路、10a……左側室、1
0b……右側室、11……前側室、12……ボリューム部、13
……シャッタ弁。The drawings show an embodiment of the present invention, FIG. 1 is an enlarged plan view of a main portion, and FIG. 2 is a schematic plan view showing the entire structure. 1 ... Engine, 2a-2f ... Cylinder, 4 ... Shutter valve,
4a ... partition wall, 6 ... intake air supply passage, 10a ... left side chamber, 1
0b …… Right side room, 11 …… Front side room, 12 …… Volume section, 13
...... Shutter valve.
───────────────────────────────────────────────────── フロントページの続き (72)考案者 中山 英夫 広島県安芸郡府中町新地3番1号 マツダ 株式会社内 (56)参考文献 特開 昭61−98918(JP,A) 実開 昭57−152424(JP,U) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hideo Nakayama Inventor Hideo Nakayama 3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima (56) References JP-A-61-98918 (JP, A) 152424 (JP, U)
Claims (1)
して、その各室に点火時期の隣り合わない気筒同士を接
続し、かつ該各室に吸気を供給する2本の吸気供給通路
をそれぞれ接続し、エンジンの高回転域で上記吸気供給
通路とは別個に設けられた通路により上記2室を連通さ
せるようにした多気筒エンジンの吸気装置において、 上記サージタンク内で上記仕切壁の一端部側に2室と連
通する1つの空間を形成するボリューム部を設けるとと
もに、 上記仕切壁の一端部に、仕切壁と略直角方向に回転した
状態ではサージタンク内の2室同士の連通および該2室
とボリューム部内空間との連通をそれぞれ遮断する一
方、その他の状態ではサージタンク内の2室同士および
該2室とボリューム部内空間とをそれぞれ連通させる回
転可能なシャッタ弁を設けたことを特徴とする多気筒エ
ンジンの吸気装置。1. A surge tank is divided into two chambers by a partition wall, two cylinders whose ignition timings are not adjacent to each other are connected to each chamber, and two intake air supply passages for supplying intake air to each chamber. Are connected to each other, and the two chambers are communicated with each other by a passage provided separately from the intake supply passage in a high engine speed region. A volume portion that forms one space communicating with the two chambers is provided on one end side, and one end portion of the partition wall communicates between the two chambers in the surge tank when rotated in a direction substantially perpendicular to the partition wall. While the communication between the two chambers and the volume portion internal space is blocked, in other states, the rotatable chambers that communicate between the two chambers in the surge tank and between the two chambers and the volume portion internal space are provided. Intake system for a multi-cylinder engine, characterized in that a motor valve.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987165185U JPH0720344Y2 (en) | 1987-10-28 | 1987-10-28 | Multi-cylinder engine intake system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987165185U JPH0720344Y2 (en) | 1987-10-28 | 1987-10-28 | Multi-cylinder engine intake system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0169130U JPH0169130U (en) | 1989-05-08 |
JPH0720344Y2 true JPH0720344Y2 (en) | 1995-05-15 |
Family
ID=31451443
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1987165185U Expired - Lifetime JPH0720344Y2 (en) | 1987-10-28 | 1987-10-28 | Multi-cylinder engine intake system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0720344Y2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2748148B2 (en) * | 1989-05-17 | 1998-05-06 | 本田技研工業株式会社 | Intake device for multi-cylinder internal combustion engine |
-
1987
- 1987-10-28 JP JP1987165185U patent/JPH0720344Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0169130U (en) | 1989-05-08 |
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