JPH03222824A - Internal combustion engine and its air cleaner structure - Google Patents

Internal combustion engine and its air cleaner structure

Info

Publication number
JPH03222824A
JPH03222824A JP2009690A JP2009690A JPH03222824A JP H03222824 A JPH03222824 A JP H03222824A JP 2009690 A JP2009690 A JP 2009690A JP 2009690 A JP2009690 A JP 2009690A JP H03222824 A JPH03222824 A JP H03222824A
Authority
JP
Japan
Prior art keywords
air cleaner
cylinder head
fuel injection
intake passage
injection pump
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.)
Granted
Application number
JP2009690A
Other languages
Japanese (ja)
Other versions
JP2855353B2 (en
Inventor
Mitsunori Iwata
岩田　三憲
Kazukado Usui
臼井　一門
Jiyunichi Sashige
純一 佐茂
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.)
Yanmar Co Ltd
Original Assignee
Yanmar Diesel Engine 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 Yanmar Diesel Engine Co Ltd filed Critical Yanmar Diesel Engine Co Ltd
Priority to JP2020096A priority Critical patent/JP2855353B2/en
Publication of JPH03222824A publication Critical patent/JPH03222824A/en
Application granted granted Critical
Publication of JP2855353B2 publication Critical patent/JP2855353B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/11—Thermal or acoustic insulation
    • F02B77/13—Acoustic insulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

PURPOSE:To improve high speed-high load performance by covering the inlet side of the intake air passage of a cylinder head and a fuel injection pump with an air cleaner to reduce various types of noises, and arranging the fuel injection pump near the air cleaner and below the inlet of the intake air passage. CONSTITUTION:Above a cylinder 2 formed integrally with a crankcase 1, a cylinder head 3 and a head cover 5 are fixed in sequence. In this case, a fuel injection pump 12 is arranged on the inlet 11a side of the intake air passage of the cylinder head 3. An air cleaner 15 is then arranged so that it blocks up the inlet 11a of the intake air passage when viewed from the direction-side of the inlet 11a of the intake air passage. Further, the outlet part of the intake air passage of the air cleaner 15 is connected to the inlet 11a of the intake air passage of the cylinder head 3. The fuel injection pump 12 is then arranged below the inlet 11a of the intake air passage of the cylinder head 3 and between the cylinder head 3 and an air cleaner body 16.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は内燃機関及び内燃機関のエアクリーナ構造に関
する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an internal combustion engine and an air cleaner structure for an internal combustion engine.

（従来技術） 内燃機関における騒音としては、シリンダ及びシリンダ
ヘッドから放射される音、シリンダヘッドの吸気通路か
ら出る吸気音及び燃料噴射ポンプの騒音等がある。(Prior Art) Noises in internal combustion engines include sounds radiated from the cylinder and cylinder head, intake noise from the intake passage of the cylinder head, and noise from the fuel injection pump.

従来の内燃機関では、エアクリーナの配置位置あるいは
これと燃料噴射ポンプとの関係において、エアクリーナ
を利用して騒音の低減を図る工夫はなされていない。In conventional internal combustion engines, no efforts have been made to reduce noise using the air cleaner, either in the arrangement of the air cleaner or in the relationship between the air cleaner and the fuel injection pump.

（発明の目的） 本発明はエアクリーナの配置等を工夫することにより上
記各種騒音を低減することを目的としている。(Objective of the Invention) An object of the present invention is to reduce the above-mentioned various noises by devising the arrangement of the air cleaner and the like.

（目的を達成するための技術的手段） 上記目的を達成するために本願請求項１記載の発明は、
シリンダヘッドの吸気通路入口側に燃料噴射ポンプを配
置し、吸気通路入口方向側からみて該吸気通路入口を塞
ぐようにエアクリーナを配置してエアクリーナの吸気通
路出口部を上記シリンダヘッドの吸気通路入口に接続し
、燃料噴射ポンプをシリンダヘッドの吸気通路入口より
下方で、シリンダヘッドとエアクリーナ本体の間に位置
させている。(Technical means for achieving the object) In order to achieve the above object, the invention according to claim 1 of the present application is as follows:
A fuel injection pump is arranged on the intake passage inlet side of the cylinder head, an air cleaner is arranged so as to block the intake passage entrance when viewed from the intake passage inlet side, and the intake passage outlet of the air cleaner is connected to the intake passage entrance of the cylinder head. The fuel injection pump is located below the intake passage inlet of the cylinder head and between the cylinder head and the air cleaner body.

エアクリーナ本体は、シリンダヘッドの吸気通路で発生
する吸気音を消音し、かつシリンダヘッド、シリンダ及
び燃料噴射ポンプから発生する音を特徴する 請求項２記載の発明は、シリンダヘッドのエアクリーナ
取付面とエアクリーナ本体の間に、エアクリーナの新気
吸込み管を配置して、該新気吸込み管をエアクリーナ本
体と一体に形成している。The invention according to claim 2, wherein the air cleaner body muffles the intake noise generated in the intake passage of the cylinder head and the noise generated from the cylinder head, the cylinder, and the fuel injection pump, is characterized in that the air cleaner mounting surface of the cylinder head and the air cleaner A fresh air suction pipe of the air cleaner is disposed between the main bodies, and the fresh air suction pipe is formed integrally with the air cleaner main body.

エアクリーナ本体は、シリンダヘッド内吸気通路で発生
する吸気音を消音する。また新気吸込み管から直接外気
やダスト等を吸い込み難くなり、エレメントの寿命も延
びる。The air cleaner body muffles intake noise generated in the intake passage in the cylinder head. In addition, it becomes difficult to draw in outside air and dust directly from the fresh air suction pipe, extending the life of the element.

（実施例） 第１図〜第４図は本願請求項１．２を適用したディーゼ
ル機関を示しており、正面図を示す第１図において、シ
リンダ２はクランクケース１と一体に形成され、シリン
ダ２の上にシリンダヘッド３及びヘッドカバー５か順に
固着されている。シリンダヘッド３の排気通路９は正面
に開口し、吸気通路１１は第１図の右側に開口している
。燃料噴射ポンプ１２は吸気通路入口１１ａ側に配置さ
れ、クランクケース１に取り付けられている。シリンダ
中心線に対する燃料噴射ポンプ１２の角度αは小さな角
度（例えば２０°）で取り付けられており、燃料噴射ポ
ンプ１２は燃料高圧管１３を介して燃料噴射弁１０に接
続されている。(Example) Figs. 1 to 4 show a diesel engine to which claim 1.2 of the present application is applied, and in Fig. 1 showing a front view, the cylinder 2 is formed integrally with the crankcase 1, and the cylinder A cylinder head 3 and a head cover 5 are fixed on top of the cylinder head 2 in this order. The exhaust passage 9 of the cylinder head 3 opens to the front, and the intake passage 11 opens to the right in FIG. The fuel injection pump 12 is disposed on the intake passage inlet 11a side and is attached to the crankcase 1. The fuel injection pump 12 is installed at a small angle α with respect to the cylinder centerline (for example, 20°), and the fuel injection pump 12 is connected to the fuel injection valve 10 via a fuel high-pressure pipe 13.

排気マフラ８は左側に配置され、その排気管部８ａはシ
リンダヘッド３の正面を左方へと延び、正面の排気通路
９の出口に接続されている。The exhaust muffler 8 is disposed on the left side, and its exhaust pipe portion 8a extends leftward from the front of the cylinder head 3 and is connected to the outlet of the exhaust passage 9 on the front.

エアクリーナ１５はシリンダヘッド３に対して燃料噴射
ポンプ配置側（右側）に配置されており、シリンダヘッ
ド３及びシリンダ２の吸気通路入口側の略全面を覆うよ
うな広い形状でかつ大きな容積で形成されている。The air cleaner 15 is arranged on the fuel injection pump arrangement side (right side) with respect to the cylinder head 3, and has a wide shape and a large volume so as to cover almost the entire surface of the cylinder head 3 and the intake passage inlet side of the cylinder 2. ing.

エアクリーナ１５は樹脂製のエアクリーナ本体１６とエ
アクリーナ蓋１７を有し、エアクリーナ本体１６はシリ
ンダヘッド３のエアクリーナ取付は面１４から一定の間
隔を隔てており、エアクリーナ本体１６とエアクリーナ
取付は面１４の間であって、吸気通路入口１１ａよりも
下方に前記燃料噴射ポンプ１２が位置している。エアク
リーナ本体１６にはシリンダヘッド側へ延びるクリーナ
側吸気通路管部２３が樹脂により一体に形成されており
、該吸気通路管部２３は図示しないボルトによりエアク
リーナ取付は面１４に固定され、前記シリンダヘッド３
の吸気通路１１の入口１１ａに接続している。エアクリ
ーナ本体６のシリンダヘッド側の面には新気吸込み管２
０が、樹脂によりエアクリーナ本体１６と一体に形成さ
れている。The air cleaner 15 has an air cleaner main body 16 and an air cleaner lid 17 made of resin. The fuel injection pump 12 is located below the intake passage entrance 11a. The air cleaner body 16 is integrally formed with a cleaner side intake passage pipe part 23 of resin that extends toward the cylinder head side.The air cleaner mounting part 23 is fixed to the surface 14 with bolts (not shown), 3
It is connected to the inlet 11a of the intake passage 11. A fresh air suction pipe 2 is installed on the cylinder head side surface of the air cleaner body 6.
0 is formed integrally with the air cleaner main body 16 from resin.

エアクリーナ蓋１７は、取付はボルト２４及び蝶ナツト
２５によりエアクリーナ本体１６に着脱自在に取り付け
られており、エアクリーナ蓋１７内にはエレメント２１
か装着されている。The air cleaner lid 17 is detachably attached to the air cleaner body 16 with bolts 24 and wing nuts 25, and an element 21 is provided inside the air cleaner lid 17.
Or installed.

第１図のＩＶ−ＩＶ断面を示す第４図において、エアク
リーナ１５の新気吸込み管２０はＬ字型に形成されてお
り、上端の裏面側の新気取入れ口２０ａから吸気通路管
部２３の上方を正面側へと略水平に延び、正面側の端部
で下方へと折れ曲がり、下端出口部２０ｂが第３図のよ
うにエレメント２１の外側空間部２８に連通している。In FIG. 4, which shows the cross section IV-IV in FIG. It extends substantially horizontally from above toward the front side, bends downward at the end on the front side, and has a lower end outlet portion 20b communicating with the outer space portion 28 of the element 21 as shown in FIG.

第３図において、エレメント２１は矩形枠状に形成され
、内側空間部２９は吸気通路管部２３に連通している。In FIG. 3, the element 21 is formed into a rectangular frame shape, and the inner space 29 communicates with the intake passage tube 23. As shown in FIG.

３０はエレメント本体取付は用ボルトを挿通ずるための
ボルト孔である。30 is a bolt hole through which a bolt for mounting the element body is inserted.

上面図を示す第２図において、シリンダヘッド３の裏面
側には燃料タンク１８が配置され、該燃料タンク１８は
左右の排気マフラ８及びエアクリーナ１５の範囲まで左
右方向に延びている。In FIG. 2 showing a top view, a fuel tank 18 is arranged on the back side of the cylinder head 3, and the fuel tank 18 extends in the left-right direction to the left and right exhaust mufflers 8 and the air cleaner 15.

吸込み管２０の新気取入れ口２０ａは燃料タンク１８に
向いて開口しており、燃料タンク１８により間隔を隔て
て覆われている。A fresh air intake port 20a of the suction pipe 20 opens toward the fuel tank 18, and is covered by the fuel tank 18 at a distance.

エンジン運転中、第２図の新気取入れ口２０ａから吸い
込まれる新気は、吸込み管２０から第３図のエレメント
外側空間部２８に入り、エレメント２１を通過して清浄
され、内部空間２つに入る。During engine operation, fresh air sucked in from the fresh air intake 20a shown in FIG. 2 enters the element outer space 28 shown in FIG. enter.

そしてエアクリーナ側吸気通路管部２３を通ってシリン
ダヘッド３の吸気通路１１に入る。It then passes through the air cleaner side intake passage pipe section 23 and enters the intake passage 11 of the cylinder head 3.

（別の実施例） エアクリーナ本体及びエアクリーナ蓋を金属製とし、ス
ポット溶接等により新気吸込み管を一体の儲けることも
できる。(Another Embodiment) The air cleaner body and the air cleaner lid may be made of metal, and the fresh air suction pipe may be integrated by spot welding or the like.

（発明の効果） 以上説明したように本願請求項１記載の発明によると、
エアクリーナ１５によりシリンダヘッド３の吸気通路入
口側を覆うと共に燃料噴射ポンプ１２を覆うので、シリ
ンダヘッド等から放射される騒音及び燃料噴射ポンプ１
２の音を近接遮蔽でき、各種騒音を低減できる。(Effect of the invention) As explained above, according to the invention claimed in claim 1,
Since the air cleaner 15 covers the intake passage inlet side of the cylinder head 3 and also covers the fuel injection pump 12, noise emitted from the cylinder head etc.
2 can be closely shielded and various noises can be reduced.

またエアクリーナの容積が大きく取れるため、吸気音の
低減になる。Also, since the air cleaner has a large volume, intake noise is reduced.

燃料噴射ポンプ１２をエアクリーナ１５とエアクリーナ
取付面１４との間で、吸気通路入口１１ａの下方に位置
させているので、燃料噴射ポンプ１２のシリンダ中心線
に対する角度αを小さくでき、これにより燃料噴射弁１
０と燃料噴射ポンプ１２の間の高圧管を短くてき、高速
、高負荷性能が向上する。Since the fuel injection pump 12 is located between the air cleaner 15 and the air cleaner mounting surface 14 and below the intake passage entrance 11a, the angle α of the fuel injection pump 12 with respect to the cylinder centerline can be made small, which allows the fuel injection valve 1
By shortening the high-pressure pipe between the fuel injection pump 12 and the fuel injection pump 12, high-speed, high-load performance is improved.

請求項２記載の発明によると、エアクリーナ本体１６と
シリンダヘッド３のエアクリーナ取付は面１４の間に新
気吸込み管２０を配置しているので、外気やダストを吸
い込み難くなり、エアクリーナの寿命が延びる。しかも
吸気音を直接外面へ放出せず、かつ新気吸込み管２０を
長くとることができ、吸気音の放出防止及び低減に効果
的である。According to the second aspect of the invention, since the fresh air suction pipe 20 is arranged between the air cleaner body 16 and the cylinder head 3 surface 14, it becomes difficult to suck outside air and dust, and the life of the air cleaner is extended. . In addition, intake noise is not directly emitted to the outside, and the fresh air intake pipe 20 can be made long, which is effective in preventing and reducing intake noise.

シリンダヘッド３とエアクリーナ本体１６の間の隙間に
吸込み管２０を配置することにより、機関全体のコンパ
クト化を達成できる。By arranging the suction pipe 20 in the gap between the cylinder head 3 and the air cleaner body 16, the entire engine can be made more compact.

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

第１図は本願請求項１．２記載の発明を適用したディー
ゼル機関の正面図、第２図は上面図、第３図は第１図の
■−■断面図、第４図は第１図のＩＶ−ＩＶ断面図であ
る。２・・・シリンダ、３・・・シリンダヘッド、１１
・・・吸気通路、１２・・・燃料噴射ポンプ、１５・・
・エアクリーナ本体、２０・・・新気吸込み管、エアク
リーナ側吸気通路管部FIG. 1 is a front view of a diesel engine to which the invention according to claim 1.2 of the present application is applied, FIG. 2 is a top view, FIG. 3 is a sectional view taken along the line ■-■ of FIG. 1, and FIG. 4 is a diagram of FIG. It is a sectional view of IV-IV. 2...Cylinder, 3...Cylinder head, 11
...Intake passage, 12...Fuel injection pump, 15...
・Air cleaner body, 20... Fresh air intake pipe, air cleaner side intake passage pipe section

Claims (2)

【特許請求の範囲】[Claims] （１）シリンダヘッド３の吸気通路入口１１ａ側に燃料
噴射ポンプ１２を配置し、吸気通路入口方向側からみて
該吸気通路入口１１ａを塞ぐようにエアクリーナ１５を
配置して、エアクリーナ１５の吸気通路出口部２３ｂを
上記シリンダヘッド３の吸気通路入口１１ａに接続し、
燃料噴射ポンプ１２をシリンダヘッド３の吸気通路入口
１１ａより下方で、シリンダヘッド３とエアクリーナ本
体１６の間に位置させたことを特徴とする内燃機関。(1) The fuel injection pump 12 is disposed on the intake passage inlet 11a side of the cylinder head 3, the air cleaner 15 is disposed so as to block the intake passage inlet 11a when viewed from the intake passage inlet direction, and the air cleaner 15 has an intake passage outlet. The portion 23b is connected to the intake passage inlet 11a of the cylinder head 3,
An internal combustion engine characterized in that a fuel injection pump 12 is located below an intake passage inlet 11a of the cylinder head 3 and between the cylinder head 3 and an air cleaner body 16. （２）シリンダヘッド３のエアクリーナ取付面１４とエ
アクリーナ本体１６の間に、エアクリーナ１５の新気吸
込み管２０を配置して、該新気吸込み管２０をエアクリ
ーナ本体１６と一体に形成したことを特徴とする内燃機
関のエアクリーナ構造。(2) The fresh air suction pipe 20 of the air cleaner 15 is disposed between the air cleaner mounting surface 14 of the cylinder head 3 and the air cleaner main body 16, and the fresh air suction pipe 20 is formed integrally with the air cleaner main body 16. Air cleaner structure for internal combustion engines.
JP2020096A 1990-01-29 1990-01-29 Internal combustion engine Expired - Lifetime JP2855353B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2020096A JP2855353B2 (en) 1990-01-29 1990-01-29 Internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2020096A JP2855353B2 (en) 1990-01-29 1990-01-29 Internal combustion engine

Publications (2)

Publication Number Publication Date
JPH03222824A true JPH03222824A (en) 1991-10-01
JP2855353B2 JP2855353B2 (en) 1999-02-10

Family

ID=12017588

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2020096A Expired - Lifetime JP2855353B2 (en) 1990-01-29 1990-01-29 Internal combustion engine

Country Status (1)

Country Link
JP (1) JP2855353B2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5229545A (en) * 1975-09-02 1977-03-05 Isuzu Motors Ltd Sound proof structure of v shape internal combustion engine
JPS5735423U (en) * 1980-08-08 1982-02-24
JPS60230558A (en) * 1984-04-27 1985-11-16 Kawasaki Heavy Ind Ltd Intake silencer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5229545A (en) * 1975-09-02 1977-03-05 Isuzu Motors Ltd Sound proof structure of v shape internal combustion engine
JPS5735423U (en) * 1980-08-08 1982-02-24
JPS60230558A (en) * 1984-04-27 1985-11-16 Kawasaki Heavy Ind Ltd Intake silencer

Also Published As

Publication number Publication date
JP2855353B2 (en) 1999-02-10

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