JPS61212628A - Intake apparatus for 4-cycle engine - Google Patents

Intake apparatus for 4-cycle engine

Info

Publication number
JPS61212628A
JPS61212628A JP60053340A JP5334085A JPS61212628A JP S61212628 A JPS61212628 A JP S61212628A JP 60053340 A JP60053340 A JP 60053340A JP 5334085 A JP5334085 A JP 5334085A JP S61212628 A JPS61212628 A JP S61212628A
Authority
JP
Japan
Prior art keywords
intake
opening
valves
cylinder
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
Application number
JP60053340A
Other languages
Japanese (ja)
Inventor
Takahiro Nagura
名倉　孝弘
Noriyuki Yamashita
典之 山下
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.)
Yamaha Motor Co Ltd
Original Assignee
Yamaha Motor Co Ltd
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 Yamaha Motor Co Ltd filed Critical Yamaha Motor Co Ltd
Priority to JP60053340A priority Critical patent/JPS61212628A/en
Publication of JPS61212628A publication Critical patent/JPS61212628A/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
    • F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
    • F02B27/02—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means
    • F02B27/0205—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means characterised by the charging effect
    • 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
    • F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
    • F02B27/02—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means
    • F02B27/0226—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means characterised by the means generating the charging effect
    • F02B27/0268—Valves
    • F02B27/0273—Flap valves
    • 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
    • F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
    • F02B27/02—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means
    • F02B27/0226—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues the systems having variable, i.e. adjustable, cross-sectional areas, chambers of variable volume, or like variable means characterised by the means generating the charging effect
    • F02B27/0289—Intake runners having multiple intake valves per cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
    • 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
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
    • 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
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B2075/1804—Number of cylinders
    • F02B2075/1816—Number of cylinders four
    • 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)
  • Characterised By The Charging Evacuation (AREA)

Abstract

PURPOSE:To reduce the number of opening and closing valves and cut cost by setting the intake passages which are opened in high-speed operation of the continuous cylinders of an engine equipped with two suction valves in each cylinder and allowing said intake passage to join on the upstream side and installing an opening and closing valve which is opened in high-speed operation at the joint flow part. CONSTITUTION:Two suction valves 3 are installed into each cylinder, and the intake passages 5a and 5b which communicate 9 at a part are installed onto the port of each suction valve. Each intake passage 5b for high-speed operation of the continuous cylinder is set continuous each other and is allowed to joint on the upstream side. An opening and closing valve 7 is installed into the joint flow part, and the valve shaft 7a is turned by an actuator 8, and said opening and closing valve 7 is opened when the engine is in high-speed revolution. Since one opening and closing valve 7 is installed for two cylinders, the number of opening and closing valves can be reduced to the half in comparison with the conventional case, and cost can be cut, and the influence due to the production error can be reduced, since the number of valves is small.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は４サイクル機関の吸気装置に関するものである
。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an intake system for a four-stroke engine.

〔従来技術〕[Prior art]

４サイクル機関において、吸気慣性を利用して吸気充填
効率を向上しようとするとき、吸気通路を細く長（する
と、低速回転において吸気充填効率をアップさせ、また
太く短くすると、高速回転において吸気充填効率をアッ
プさせることができる。このように吸気充填効率のアッ
プをさせるため、１気筒当たり２個の吸気ポートを設け
て、その吸気ポートごとに吸気通路を分離して設け、一
方の吸気通路に高速回転時に開弁させるようにした制御
弁を設けるものが既に捉案されている。In a 4-stroke engine, when attempting to improve intake air filling efficiency by utilizing intake inertia, the intake passage is made narrower and longer (thus increasing the intake air filling efficiency at low speeds, and making it thicker and shorter increases the intake air filling efficiency at high speeds). In order to increase the intake air filling efficiency in this way, two intake ports are provided per cylinder, and an intake passage is provided separately for each intake port, and one intake passage is provided with a high-speed Some proposals have already been made to provide a control valve that opens during rotation.

ところが、上述のような構成を多気筒の機関に設ける場
合、上記制御弁を多気筒に対して全て同じ寸法に加工し
たり、全閉、全開角度を全て同一になるように調整する
ことは非常に難しいことである。そのため、機関を運転
すると、制御弁の全閉、全開時および作動時に各気筒間
に出力のバラツキを生ずるようになる。However, when installing the above-mentioned configuration in a multi-cylinder engine, it is very difficult to process the control valves to have the same dimensions for the multi-cylinders, or to adjust the fully closed and fully open angles to be all the same. This is difficult. Therefore, when the engine is operated, variations in output occur between cylinders when the control valve is fully closed, fully opened, and activated.

〔発明の目的〕[Purpose of the invention]

本発明の目的は、多気筒の４サイクル機関における吸気
充填効率をアップさせる場合、各気筒間の出力のバラツ
キを減少させるようにした吸気装置を提供することにあ
る。An object of the present invention is to provide an intake system that reduces variations in output between cylinders when increasing intake air filling efficiency in a multi-cylinder four-stroke engine.

〔発明の構成〕[Structure of the invention]

上記目的を達成する本発明は、１気筒当たり２個の吸気
ポートを設け、各吸気ポート毎に個別に吸気通路を接続
すると共に、一方の吸気通路に高速回転時に開弁する制
御弁を設けた多気筒の４サイクル機関において、前記制
御弁を設けた吸気通路を、隣接する気筒のもの同士を互
いに隣接配置すると共に、少なくとも制御弁を設けた部
分において一体化し、かつ両吸気通路における制御弁を
共通の１個にしたことを特徴とするものである。The present invention achieves the above object by providing two intake ports per cylinder, connecting an intake passage to each intake port individually, and providing one of the intake passages with a control valve that opens at high speed rotation. In a multi-cylinder four-stroke engine, the intake passages provided with the control valves in adjacent cylinders are arranged adjacent to each other, and are integrated at least in the portion provided with the control valves, and the control valves in both intake passages are arranged adjacently to each other, and the control valves in both intake passages are integrated. It is characterized by having one common piece.

〔実施例〕〔Example〕

以下、本発明を図に示す実施例により説明する。 The present invention will be explained below with reference to embodiments shown in the drawings.

第１，２図に示す実施例において、１は４サイクル機関
のシリンダで、４気筒設けられている。各シリンダ１上
部の燃焼室２には、２個ずつの吸気ポート３，３と排気
ポート４．４が、それらを開閉する吸気弁３ａ、３ａ、
排気弁４ａ、４ａと共に設けられている。各シリンダｌ
にはそれぞれ吸気通路５が接続され、複数の吸気通路５
は一つのサージタンク６に連結されている。サージタン
ク６は、その入口に一つのスロットル弁１１を設けてい
る。In the embodiment shown in FIGS. 1 and 2, 1 is a cylinder of a 4-cycle engine, and 4 cylinders are provided. In the combustion chamber 2 at the top of each cylinder 1, there are two intake ports 3, 3 and an exhaust port 4.4, and intake valves 3a, 3a for opening and closing them.
It is provided together with the exhaust valves 4a, 4a. Each cylinder
Each of the intake passages 5 is connected to a plurality of intake passages 5.
are connected to one surge tank 6. The surge tank 6 is provided with one throttle valve 11 at its inlet.

上記吸気通路５は、１気筒当たり２個設けた吸気ポート
３，３に対応して、二つの通路５ａ。The intake passage 5 has two passages 5a corresponding to the two intake ports 3, 3 provided per cylinder.

５ｂに部分され、かつ下流側において一部が連通路９で
連通し、その連通部分に燃料噴射ノズル１０が臨ませで
ある。5b, and a part thereof communicates with a communication passage 9 on the downstream side, and a fuel injection nozzle 10 faces the communication part.

このような二つの通路５ａ、５ｂのうち、その一方の通
路５ｂには制御弁７が設けられている。この制御弁７は
アクチュエータ８によって高速回転時に開弁じ、低速回
転時には閉弁するように駆動される。アクチュエータ８
は、制御弁７を設けない通路５ａの下流から負圧を拾っ
て駆動するようにしてもよく、あるいは機関の回転数を
拾って駆動するようにしてもよい。A control valve 7 is provided in one of the two passages 5a and 5b, 5b. This control valve 7 is driven by an actuator 8 so as to be opened during high speed rotation and closed during low speed rotation. Actuator 8
Alternatively, the control valve 7 may be driven by picking up negative pressure from the downstream side of the passage 5a where the control valve 7 is not provided, or it may be driven by picking up the rotational speed of the engine.

上記制御弁７は低速回転時には閉弁しているため、吸気
通路５に導入される吸気は、通路５ａ側を介して燃焼室
２へ供給される。そのため、吸気長は細く長くなり、そ
の低速回転時の吸気充填効率をアップする。また、高速
回転時は制御弁７が開弁するため、吸気通路５に導入さ
れる吸気は両通路５ａ、５ｂを介して燃焼室２へ供給さ
れる。そのため、吸気長は太く短くなり、その高速回転
時の吸気充填効率をアンプする。Since the control valve 7 is closed during low speed rotation, the intake air introduced into the intake passage 5 is supplied to the combustion chamber 2 via the passage 5a side. Therefore, the intake length becomes narrower and longer, increasing the intake air filling efficiency during low speed rotation. Furthermore, since the control valve 7 opens during high-speed rotation, the intake air introduced into the intake passage 5 is supplied to the combustion chamber 2 via both passages 5a and 5b. Therefore, the intake length becomes thicker and shorter, which amplifies the intake air filling efficiency during high-speed rotation.

上記制御弁７を設けた方の通路５ｂは、互いに隣接する
シリンダ１．１図士のものが同じ側に隣接配置される関
係になっており、かつ制御弁７を配置した部分において
両者が一体化している。制御弁７は、この一体化した部
分に１個だけ設けられ、二つの通路５ｂ、５ｂを同時に
開閉制御するようになっている。The passage 5b on which the control valve 7 is provided is such that the cylinders 1.1 and 1.1 which are adjacent to each other are arranged adjacently on the same side, and both are integrated in the part where the control valve 7 is arranged. It has become Only one control valve 7 is provided in this integrated portion, and is configured to control the opening and closing of the two passages 5b, 5b at the same time.

上記制御弁７は、回転軸７ａを二つの通路５ｂ、ｓｂが
並ぶ方向と同じ方向（水平方向）になるように設置され
ているが、これを第３図に示すように、二つの通路５ｂ
、５ｂの並列方向と直交させるように設置してもよい。The control valve 7 is installed so that the rotating shaft 7a is in the same direction (horizontal direction) as the direction in which the two passages 5b and sb are lined up.
, 5b may be installed so as to be orthogonal to the parallel direction.

この後者のような回転軸７ａの設置により、開弁時の制
御弁７の吸気流に対する抵抗を減少させ、出力向上を有
利にする。この第３図のように回転軸７ａを設置した場
合は、第４図に示すように、その制御弁７より上流側の
共通部分に、二つの通路５ｂ、５ｂに対応させる隔壁１
２を設けるようにしてもよい。By installing the rotary shaft 7a in the latter manner, the resistance to the intake flow of the control valve 7 when the valve is opened is reduced, making it advantageous to improve the output. When the rotating shaft 7a is installed as shown in FIG. 3, a partition wall 1 corresponding to the two passages 5b, 5b is provided at a common portion upstream of the control valve 7, as shown in FIG.
2 may be provided.

上述した吸気装置によると、制御弁７が、互いに隣接す
るシリンダ１．１の二つの吸気通路５ｂ、５ｂに対して
共通化された１個になっているため、二つの気筒に対す
る制御弁７の製作誤差や、全開、全開角度の調整誤差な
どを解消し、それによって機関運転時の気筒間の出力の
バラツキを減少することができる。また、制御弁７の共
通化によって、部品点数を削減し、コストダウンに寄与
することができる。According to the above-mentioned intake system, since the control valve 7 is one common valve for the two intake passages 5b, 5b of the adjacent cylinders 1.1, the control valve 7 for the two cylinders is It eliminates manufacturing errors and adjustment errors in full-open and full-open angles, thereby reducing variations in output between cylinders during engine operation. Further, by making the control valve 7 common, the number of parts can be reduced, contributing to cost reduction.

〔発明の効果〕〔Effect of the invention〕

上述したように本発明は、１気筒当たり２個の吸気ポー
トを設け、各吸気ポート毎に個別に吸気通路を接続する
と共に、一方の吸気通路に高速回転時に開弁する制御弁
を設けた多気筒の４サイクル機関において、前記制御弁
を設けた吸気通路を、隣接する気筒のもの同士を互いに
隣接配置すると共に、少なくとも制御弁を設けた部分に
おいて一体化し、かつ両吸気通路における制御弁を共通
の１個にしたものである。As described above, the present invention provides a multiplex system in which two intake ports are provided per cylinder, an intake passage is connected to each intake port individually, and one intake passage is provided with a control valve that opens at high speed rotation. In a four-cylinder engine, the intake passages in which the control valves are provided are arranged adjacent to each other in adjacent cylinders, and are integrated at least in the portion where the control valves are provided, and the control valves in both intake passages are common. It is made into one piece.

したがって、二つの気筒に対する制御弁の製作誤差や、
全閉、全開角度の調整誤差などが解消され、それによっ
て機関運転時の気筒間の出力のバラツキを減少すること
ができる。Therefore, manufacturing errors in the control valves for the two cylinders,
Adjustment errors in the fully closed and fully open angles are eliminated, thereby reducing variations in output between cylinders during engine operation.

また、制御弁の共通化によって、部品点数を削減し、コ
ストダウンに寄与することができる。Furthermore, by standardizing the control valves, the number of parts can be reduced, contributing to cost reduction.

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

第１図は本発明の実施例による吸気装置を断面にして示
す概略平面図、第２図は第１図の装置を断面にして示す
概略側面図、第３図は他の実施例による吸気装置を断面
にして示す概略平面図、第４図はさらに他の実施例によ
る吸気装置を断面にして示す概略平面図である。 １・−シリンダ、　２・−・燃焼室、　３・−・吸気ポ
ート、　５・−吸気通路、　５ａ、５ｂ・−・通路、６
−・サージタンク、　７・−制御弁、　　１１−スロッ
トル弁。FIG. 1 is a schematic plan view showing a section of an intake device according to an embodiment of the present invention, FIG. 2 is a schematic side view showing a section of the device of FIG. 1, and FIG. 3 is an intake device according to another embodiment. FIG. 4 is a schematic plan view showing a cross section of an intake device according to still another embodiment. 1--Cylinder, 2--Combustion chamber, 3--Intake port, 5--Intake passage, 5a, 5b--Passage, 6
- Surge tank, 7 - Control valve, 11 - Throttle valve.

Claims (1)

【特許請求の範囲】[Claims] １気筒当たり２個の吸気ポートを設け、各吸気ポート毎
に個別に吸気通路を接続すると共に、一方の吸気通路に
高速回転時に開弁する制御弁を設けた多気筒の４サイク
ル機関において、前記制御弁を設けた吸気通路を、隣接
する気筒のもの同士を互いに隣接配置すると共に、少な
くとも制御弁を設けた部分において一体化し、かつ両吸
気通路における制御弁を共通の１個にしたことを特徴と
する４サイクル機関の吸気装置。In a multi-cylinder four-stroke engine, in which two intake ports are provided per cylinder, each intake port is individually connected to an intake passage, and one intake passage is provided with a control valve that opens at high speed rotation. The intake passages provided with control valves are arranged adjacent to each other in adjacent cylinders, and are integrated at least in the portion provided with the control valves, and the control valves in both intake passages are made one common control valve. Intake system for a 4-stroke engine.
JP60053340A 1985-03-19 1985-03-19 Intake apparatus for 4-cycle engine Pending JPS61212628A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60053340A JPS61212628A (en) 1985-03-19 1985-03-19 Intake apparatus for 4-cycle engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60053340A JPS61212628A (en) 1985-03-19 1985-03-19 Intake apparatus for 4-cycle engine

Publications (1)

Publication Number Publication Date
JPS61212628A true JPS61212628A (en) 1986-09-20

Family

ID=12940027

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60053340A Pending JPS61212628A (en) 1985-03-19 1985-03-19 Intake apparatus for 4-cycle engine

Country Status (1)

Country Link
JP (1) JPS61212628A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4032380A1 (en) * 1990-10-12 1992-04-16 Daimler Benz Ag IC engine intake system - has second valve in smaller resonance pipe shut at medium and high speed
EP0509691A1 (en) * 1991-04-15 1992-10-21 Ford Motor Company Limited Dual-mode induction system for an internal combustion engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4032380A1 (en) * 1990-10-12 1992-04-16 Daimler Benz Ag IC engine intake system - has second valve in smaller resonance pipe shut at medium and high speed
EP0509691A1 (en) * 1991-04-15 1992-10-21 Ford Motor Company Limited Dual-mode induction system for an internal combustion engine

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