JPS6111421A - Suction device for multicylinder engine - Google Patents

Suction device for multicylinder engine

Info

Publication number
JPS6111421A
JPS6111421A JP59134772A JP13477284A JPS6111421A JP S6111421 A JPS6111421 A JP S6111421A JP 59134772 A JP59134772 A JP 59134772A JP 13477284 A JP13477284 A JP 13477284A JP S6111421 A JPS6111421 A JP S6111421A
Authority
JP
Japan
Prior art keywords
valve
swirl
intake
engine
cylinder
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
Application number
JP59134772A
Other languages
Japanese (ja)
Inventor
Makoto Shimada
誠 島田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Motors Corp
Original Assignee
Mitsubishi Motors Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Motors Corp filed Critical Mitsubishi Motors Corp
Priority to JP59134772A priority Critical patent/JPS6111421A/en
Publication of JPS6111421A publication Critical patent/JPS6111421A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

PURPOSE:To adjust the strength of a swirl according to an operating state in a simple structure, by interconnecting a mutual interval of each of swirl ports of adjacent cylinders at the vicinity of respective suction valves, while installing a valve, to be opened or closed according to an engine operating condition, in the interconnecting passage. CONSTITUTION:Swirl ports 13 and 13, with such a form as being suitable to form a swirl, being installed in each of adjacent cylinders 1 and 1 are interconnected with an interconnecting passage 3 in and around the opening. An on-off valve 4 is installed in this interconnecting passage 3, and this valve is opened or closed by rotating a lever 5 by a differential pressure opening type actuator 9 via rods 8, 7 and 6. In time of low load in an engine, the on-off valve 4 is closed by the actuator 9 whereby a strong swirl is formed at each port. In proportion as the load comes high, the valve 4 is opened, and the swirl is weakened by suction air out of adjacent ports, thus undue swirl formation is brought to nothing there.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、多気筒エンシ゛ンにそなえられる吸気装置に
関し、特に、スワール発生用吸気ポートをそなえた吸気
装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an intake device provided in a multi-cylinder engine, and particularly to an intake device provided with an intake port for generating swirl.

〔従来の技術〕[Conventional technology]

従来のエンジン用吸気装置では、スワール発生用吸気ポ
ートとしてのヘリカル型吸気ポートから各気筒の燃焼室
に吸気を供給することによって、燃焼室内にスワール比
の天外な吸気を供給している。In a conventional engine intake device, intake air with an extraordinary swirl ratio is supplied into the combustion chamber by supplying intake air to the combustion chamber of each cylinder from a helical intake port serving as an intake port for generating swirl.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかしなが呟このようなエンジン用吸気装置では、スワ
ール発生用吸気ポートはストレートポートに比較して、
流量係数が大とく、全開性能に悪影響が及ぼされて、特
に、低速高負荷域や高速高負荷域において流量抵抗が大
きいという問題点がある。However, in such an engine intake system, the intake port for generating swirl is compared to the straight port.
There is a problem in that a large flow coefficient adversely affects full-open performance, and flow resistance is particularly large in low-speed, high-load ranges and high-speed, high-load ranges.

また、吸気ポートを２つに分岐して、その一方の分岐路
にロータリ弁を設置し、このロータリ弁の開閉により、
スワールを制御するようにしたものも提案されているが
、このようなものでは、ロータリ弁が気筒数必要となり
、さらに、それらをリンク機構で連結するなど、構造が
複雑になるという問題点がある。In addition, the intake port is branched into two, and a rotary valve is installed in one of the branched paths, and by opening and closing this rotary valve,
A device that controls swirl has also been proposed, but such a device requires rotary valves for several cylinders and has the problem of a complicated structure, such as connecting them with a link mechanism. .

本発明は、このような問題点を解決しようとするもので
、簡素な構成で、エンジンの運転状態に応じて、燃焼室
へ流入する吸気のスワール比を制御できるようにした、
多気筒エンジン用吸気装置を提供することを目的とする
。The present invention aims to solve these problems, and has a simple configuration that allows the swirl ratio of intake air flowing into the combustion chamber to be controlled according to the operating condition of the engine.
The purpose of the present invention is to provide an intake system for a multi-cylinder engine.

〔問題点を解決するための手段〕[Means for solving problems]

このため、本発明の多気筒エンジン用吸気装置は、多気
筒エンジンにおいて、各気筒の燃焼室に接続してスクー
ルの大きな吸気を供給するスワール発生用吸気ポートを
そなえ、隣接する上記スワール発生用吸気ポートの相互
間をそれぞれの吸気弁の近傍において連通する連通路が
設けられて、同連通路に介装されて隣接する上記スワー
ル発生用吸気ポートの相互間を連通遮断しうる開閉弁と
、同開閉弁を駆動する弁駆動用アクチュエータと、同弁
駆動用アクチュエータへ上記エンジンの作動状態に応じ
て制御信号を送る制御手段とが設けられたことを特徴と
している。Therefore, the intake device for a multi-cylinder engine of the present invention is provided with a swirl-generating intake port that is connected to the combustion chamber of each cylinder and supplies a large amount of intake air to the combustion chamber of each cylinder. A communication passage is provided to communicate the ports with each other in the vicinity of each intake valve, and an on-off valve is provided in the communication passage and capable of disconnecting communication between the adjacent intake ports for swirl generation; The engine is characterized by being provided with a valve driving actuator that drives the on-off valve, and a control means that sends a control signal to the valve driving actuator in accordance with the operating state of the engine.

〔作用〕[Effect]

本発明の多気筒エンジン用吸気装置は−１−述のごとく
構成されているので、開閉弁を閉鎖することにより、ス
ワール発生用吸気ポートを通した吸気が各気筒の燃焼室
へ送られ、これにより燃焼室内には大きなスワールが発
生する。Since the intake system for a multi-cylinder engine of the present invention is configured as described in -1-, by closing the on-off valve, intake air is sent through the swirl generation intake port to the combustion chamber of each cylinder. As a result, a large swirl is generated within the combustion chamber.

開閉弁を開放（連通）することにより、スワール発生用
吸気ポートからの吸気と隣接するスワール発生用吸気ポ
ーＦから連通路を通して供給される吸気とが各気筒の燃
焼室へ送られ、これにより燃焼室内にはスワールの小さ
な吸気が大量に送られる。By opening (communicating) the on-off valve, the intake air from the swirl generation intake port and the intake air supplied from the adjacent swirl generation intake port F through the communication passage are sent to the combustion chamber of each cylinder, thereby causing combustion. A large amount of small swirl air is sent into the room.

〔実施例〕〔Example〕

以下、図面により本発明の実施例について説明すると、
第１〜４図は本発明の一実施例としての多気筒エンジン
用吸気装置を示すもので、第１図はその要部を模式的に
示す平面図、第２図はその要部を模式的に示す立面図、
第３図はその制御手段を示すグラフ、第４図はそのアク
チュエータおよび制御手段の変形例を示す模式図である
。Hereinafter, embodiments of the present invention will be explained with reference to the drawings.
1 to 4 show an intake system for a multi-cylinder engine as an embodiment of the present invention. FIG. 1 is a plan view schematically showing the main parts thereof, and FIG. The elevation shown in
FIG. 3 is a graph showing the control means, and FIG. 4 is a schematic diagram showing a modification of the actuator and control means.

第１，２図に示すように、多気筒エンジンＥの各気筒（
ここでは、第１気筒Ｓ１および第２気筒Ｓ２を示し、第
３気筒および第４気筒の図示を省略する。）の燃焼室１
ヘスワ一ル発生用吸気ポート２からスワール比の大きな
吸気が供給されるようになっており、隣接するスワール
発生用吸気ポート２のスワールの発生する方向は逆向き
に構成されている。As shown in Figures 1 and 2, each cylinder (
Here, the first cylinder S1 and the second cylinder S2 are shown, and the illustration of the third cylinder and the fourth cylinder is omitted. ) combustion chamber 1
Intake air having a large swirl ratio is supplied from the air swirl generation intake port 2, and the swirl generation direction of the adjacent swirl generation air intake ports 2 is opposite to each other.

そして、隣接するスワール発生用吸気ポート２の相互間
をそれぞれの吸気弁１３の近傍で連通する連通路３が設
けられており、この連通路３には、開閉弁４が介装され
ていて、この開閉弁４の弁体４ａは連通路３を連通遮断
する。A communication passage 3 is provided that communicates between adjacent swirl generation intake ports 2 near each intake valve 13, and an on-off valve 4 is interposed in this communication passage 3. The valve body 4a of the on-off valve 4 blocks communication from the communication path 3.

すなわち、開閉弁４の弁体４ａは、スリーブ１１の内部
において回転するように構成されていて、開閉弁４の上
部プレート５は、ロッド６．７およびロッド８を経由し
て、弁駆動用アクチェエータとしての電気モータ９へ接
続している。That is, the valve body 4a of the on-off valve 4 is configured to rotate inside the sleeve 11, and the upper plate 5 of the on-off valve 4 is connected to the valve driving actuator via the rod 6.7 and the rod 8. It is connected to an electric motor 9 as an electric motor.

また、ロッド１０が設けられていて、図示しない第３．
４気筒における開閉弁を、第１，２気筒Ｓ、、Ｓ２にお
ける開閉弁４と同時に、駆動する。Further, a rod 10 is provided, and a third rod (not shown) is provided.
The on-off valves for the four cylinders are driven simultaneously with the on-off valves 4 for the first and second cylinders S, S2.

弁駆動用アクチュエータとしての電気モータ９は、制御
手段としてのコントローラ２６からの制御信号により、
突出引込されるようになっていて、開閉弁４の弁体４ａ
の回転位置に対応するロッド８の突出量は、例えば、ポ
ジションセンサ２７により検出されて、第３図に示すよ
うに、コントローラ２６に供給される。The electric motor 9 as a valve driving actuator is controlled by a control signal from a controller 26 as a control means.
The valve body 4a of the on-off valve 4 is designed to be protruded and retracted.
The amount of protrusion of the rod 8 corresponding to the rotational position is detected by, for example, a position sensor 27, and is supplied to a controller 26 as shown in FIG.

また、第３図に示すように、コントローラ２６には、エ
ンジン回転数を検出するエンジン回転数センサ２０゜ア
クセル開度センサ２１．エンジンＥの冷却水温を検出す
る水温センサ２２．ノックセンサ２３．空燃比センサ２
４および吸気通路内に装備される圧力センサ２５からの
各検出信号が供給されるようになっている。As shown in FIG. 3, the controller 26 includes an engine rotation speed sensor 20, an accelerator opening sensor 21, and an engine rotation speed sensor 20 for detecting the engine rotation speed. A water temperature sensor 22 that detects the cooling water temperature of the engine E. Knock sensor 23. Air fuel ratio sensor 2
4 and a pressure sensor 25 installed in the intake passage.

なお、アクチュエータおよび制御手段として、第４図に
示すように差圧応動式アクチュエータ９′を用いてもよ
く、作動室９’ａに吸気通路からの負圧を供給するよう
に構成して、負圧の小さいエンジン低速回転時に、連通
路３ａを閉鎖状態として、負圧の大量いエンジン高速回
転時に、連通路３ａを連通状態とする。As the actuator and control means, a differential pressure responsive actuator 9' may be used as shown in FIG. The communication passage 3a is closed when the engine is rotating at a low speed with a small pressure, and the communication passage 3a is placed in a communication state when the engine is rotating at a high speed with a large amount of negative pressure.

また、図中の符号９’ｂは戻しバネ、１２は取付ネジ、
１４はステム、１５はバネ、１６はロッカアーム、１７
はカム、１８はカムシャフト、１９はロツカシャフト、
２８はプランジャをそれぞれ示している。In addition, the reference numeral 9'b in the figure is a return spring, 12 is a mounting screw,
14 is the stem, 15 is the spring, 16 is the rocker arm, 17
is a cam, 18 is a camshaft, 19 is a rock shaft,
28 each indicates a plunger.

本発明の実施例としての多気筒エンジン用吸気装置は上
述のごとく構成されているので、コントローラ２６は、
各センサ２０〜２５からの検出信号を受けて、エンジン
Ｅの運転状態が、後述する各運転状態に適合するとき、
モータ９へ制御信号を供給して各開閉弁４の弁体４ａを
回動する。Since the multi-cylinder engine intake system according to the embodiment of the present invention is configured as described above, the controller 26
When the operating state of the engine E conforms to each operating state described later in response to detection signals from each sensor 20 to 25,
A control signal is supplied to the motor 9 to rotate the valve body 4a of each on-off valve 4.

これにより、連通路３の開閉状態が制御され、開閉弁４
の回動状態（回転角度）は、ポジションセンサ２７から
の検出信号によりフィードバック制御される。As a result, the opening/closing state of the communication passage 3 is controlled, and the opening/closing valve 4
The rotation state (rotation angle) of is feedback-controlled by a detection signal from the position sensor 27.

エンジンの低負荷時においては、各センサ２０〜２５か
らの検出信号に基づト、コントローラ２６において、エ
ンジンＥの低負荷状態が判定されて、コントローラ２６
からモータ９へ制御信号が供給されて、開閉弁４の弁体
４ａが、第１図中に破線で示す回転角度となり、連通路
３が全閉状態となる。When the engine is under low load, the controller 26 determines the low load state of the engine E based on the detection signals from the sensors 20 to 25, and the controller 26 determines that the engine E is in a low load state.
A control signal is supplied from the motor 9 to the motor 9, so that the valve body 4a of the on-off valve 4 assumes the rotation angle shown by the broken line in FIG. 1, and the communication passage 3 becomes fully closed.

したがって、吸気が、スワール発生用吸気ポート２から
各燃焼室１へ燃焼室１の円周沿いに強く吹外込まれるの
で、スワール比の大きい吸気流となり、燃料の霧化が促
進されて、低負荷時における燃焼速度を高めることによ
り、リーン化が可能となり、燃費が向」ニする。Therefore, the intake air is strongly blown outward from the swirl-generating intake port 2 into each combustion chamber 1 along the circumference of the combustion chamber 1, resulting in an intake air flow with a large swirl ratio, promoting fuel atomization, and reducing fuel consumption. By increasing the combustion speed under load, it becomes possible to achieve a lean engine, which improves fuel efficiency.

また、エンジンの低速回転や高速回転の高負荷時におい
ては、コントローラ２６からモータ９へ制御信号が供給
されて、開閉弁４の弁体４ａが、第１図中の２点鎖線で
示す回転角度となり、連通路３が全開状態となる。Further, when the engine is under high load due to low speed rotation or high speed rotation, a control signal is supplied from the controller 26 to the motor 9, and the valve element 4a of the on-off valve 4 is rotated at the rotation angle shown by the two-dot chain line in FIG. As a result, the communication path 3 becomes fully open.

これにより、吸気がスワール発生用吸気ポート２および
隣接するスワール発生用吸気ポート２から各燃焼室１へ
供給されるので、スワール比の小さい多量の吸気流とな
り、各気筒Ｓ　ｌ　ｌ　Ｓ　’２への吸気の充填効率が
高められて、エンジンＥの高出力化が実現できる。As a result, intake air is supplied to each combustion chamber 1 from the swirl generation intake port 2 and the adjacent swirl generation intake port 2, resulting in a large amount of intake air flow with a small swirl ratio, and flows to each cylinder S l l S '2. The filling efficiency of the intake air is increased, and a high output of the engine E can be realized.

このようにして、隣接する気筒のうち吸気状態となって
いない気筒のスワール発生用吸気ポート２を通じて送ら
れる吸気が、連通路３を介して吸気状態となっている気
筒へ供給されるので、吸気状態における気筒への吸気の
流通抵抗が低下する。In this way, the intake air sent through the swirl generation intake port 2 of the cylinder that is not in the intake state among the adjacent cylinders is supplied to the cylinder that is in the intake state via the communication passage 3. In this state, the resistance to the flow of intake air to the cylinders decreases.

なお、開閉弁４の回動タイミングは、各燃焼室１におけ
る吸気タイミングに対応するように設定され、開−８＝ 閉弁４の閉鎖時の回転角度は、半閉鎖状態の角度に設定
されるようにしてもよい。The rotation timing of the on-off valve 4 is set to correspond to the intake timing in each combustion chamber 1, and the rotation angle of the open/close valve 4 when closed is set to the angle of the semi-closed state. You can do it like this.

〔発明の効果〕 以上詳述したように、本発明の多気筒エンジン用吸気装
置よれば、多気筒エンジンにおいて、各気筒の燃焼室に
接続してスワールの天外な吸気を供給するスワール発生
用吸気ポートをそなえ、隣接する上記スワール発生用吸
気ポートの相互間をそれぞれの吸気弁の近傍において連
通する連通路が設けられて、同連通路に介装されて隣接
する上記スワール発生用吸気ポートの相互間を連通遮断
しうる開閉弁と、同開閉弁を駆動する弁駆動用アクチュ
エータと、同弁駆動用アクチュエータへ上記エンジンの
作動状態に応じて制御信号を送る制御手段とが設けられ
るという簡素な構成で、次のような効果ないし利点を得
ることがでトる。[Effects of the Invention] As described in detail above, according to the multi-cylinder engine intake system of the present invention, in a multi-cylinder engine, the swirl-generating intake air is connected to the combustion chamber of each cylinder to supply intake air with an extraordinary swirl. A communication passage is provided that communicates between the adjacent intake ports for generating swirl in the vicinity of each intake valve, and is interposed in the communication passage to communicate between the intake ports for generating swirl that are adjacent to each other. A simple configuration that includes an on-off valve that can communicate with or cut off communication between the on-off valve, a valve-driving actuator that drives the on-off valve, and a control means that sends a control signal to the valve-driving actuator in accordance with the operating state of the engine. You can get the following effects or benefits.

（１）燃焼室へ供給される吸気のスワールを変化させる
ことができる。(1) The swirl of intake air supplied to the combustion chamber can be changed.

（２）隣接する２つのスワール発生用吸気ポートを連通
する連通路を１つの開閉弁により開閉することかできる
ので、開閉弁の配設数が少なくなる。(2) Since the communication path that communicates two adjacent swirl-generating intake ports can be opened and closed by one on-off valve, the number of on-off valves to be provided is reduced.

（３）低コスト化が実現できる。(3) Cost reduction can be achieved.

（４）大量の吸気を気筒へ供給する際に、流通抵抗を低
くすることができる。(4) The flow resistance can be lowered when a large amount of intake air is supplied to the cylinders.

【図面の簡単な説明】[Brief explanation of drawings]

第１〜４図は本発明の一実施例としての多気筒エンジン
用吸気装置を示すもので、第１図はその要部を模式的に
示す平面図、第２図はその要部を模式的に示す立面図、
第３図はその制御手段を示すグラフ、第４図はそのアク
チュエータおよび制御手段の変形例を示す模式図である
。 １・・燃焼室、２・・スワール発生用吸気ポート、３・
・連通路、４・・開閉弁、４ａ・・弁体、５・・上部プ
レート、６〜８・・ロッド、９・・弁駆動用アクチュエ
ータとしての電気モータ、９′　・・弁駆動用アクチュ
エータとしての差圧応動式アクチュエータ、９’ａ・・
作動室、９′ｌ〕・・戻しバネ、１０・・ロッド、１１
・・スリーブ、１２・・取付ネジ、１３・・吸気弁、１
４・・ステム、１５・・バネ、１６・・ロッカアーム、
１７・・カム、１８・・カムシャ７）、１９・・ロッカ
シャフト、２０・・エンジン回転数センサ、２１・・ア
クセル開度センサ、２２・・水温センサ、２３・・ノッ
クセンサ、２４・・空燃比センサ、２５・・圧力センサ
、２６・・制御手段としてのコントローラ、２７・・ポ
ジションセンサ、２８・・プランジャ、Ｅ・・エンジン
、Ｓ、、Ｓ２・・気筒。 代理人　弁理士　飯　沼　義　彦 第３図 第４図1 to 4 show an intake system for a multi-cylinder engine as an embodiment of the present invention. FIG. 1 is a plan view schematically showing the main parts thereof, and FIG. The elevation shown in
FIG. 3 is a graph showing the control means, and FIG. 4 is a schematic diagram showing a modification of the actuator and control means. 1. Combustion chamber, 2. Intake port for swirl generation, 3.
・Communication path, 4...Opening/closing valve, 4a...valve body, 5...upper plate, 6-8...rod, 9...electric motor as valve drive actuator, 9'...as valve drive actuator Differential pressure responsive actuator, 9'a...
Working chamber, 9'l]... Return spring, 10... Rod, 11
・・Sleeve, 12・・Mounting screw, 13・・Intake valve, 1
4. Stem, 15. Spring, 16. Rocker arm.
17...Cam, 18...Camshaft 7), 19...Rocker shaft, 20...Engine speed sensor, 21...Accelerator opening sensor, 22...Water temperature sensor, 23...Knock sensor, 24...Empty Fuel ratio sensor, 25...Pressure sensor, 26...Controller as control means, 27...Position sensor, 28...Plunger, E...Engine, S,, S2...Cylinder. Agent Patent Attorney Yoshihiko Iinuma Figure 3 Figure 4

Claims (1)

【特許請求の範囲】[Claims] 多気筒エンジンにおいて、各気筒の燃焼室に接続してス
ワールの大きな吸気を供給するスワール発生用吸気ポー
トをそなえ、隣接する上記スワール発生用吸気ポートの
相互間をそれぞれの吸気弁の近傍において連通する連通
路が設けられて、同連通路に介装されて隣接する上記ス
ワール発生用吸気ポートの相互間を連通遮断しうる開閉
弁と、同開閉弁を駆動する弁駆動用アクチュエータと、
同弁駆動用アクチュエータへ上記エンジンの作動状態に
応じて制御信号を送る制御手段とが設けられたことを特
徴とする、多気筒エンジン用吸気装置。In a multi-cylinder engine, a swirl-generating intake port is provided which is connected to the combustion chamber of each cylinder to supply intake air with a large swirl, and the adjacent swirl-generating intake ports communicate with each other near each intake valve. an on-off valve provided with a communication passage and interposed in the communication passage to be able to disconnect communication between the adjacent swirl-generating intake ports, and a valve driving actuator for driving the on-off valve;
An intake device for a multi-cylinder engine, characterized in that it is provided with a control means for sending a control signal to an actuator for driving the same valve according to the operating state of the engine.
JP59134772A 1984-06-27 1984-06-27 Suction device for multicylinder engine Pending JPS6111421A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59134772A JPS6111421A (en) 1984-06-27 1984-06-27 Suction device for multicylinder engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59134772A JPS6111421A (en) 1984-06-27 1984-06-27 Suction device for multicylinder engine

Publications (1)

Publication Number Publication Date
JPS6111421A true JPS6111421A (en) 1986-01-18

Family

ID=15136202

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59134772A Pending JPS6111421A (en) 1984-06-27 1984-06-27 Suction device for multicylinder engine

Country Status (1)

Country Link
JP (1) JPS6111421A (en)

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