JPS58194695A - Intake device of outboard engine - Google Patents

Intake device of outboard engine

Info

Publication number
JPS58194695A
JPS58194695A JP57076155A JP7615582A JPS58194695A JP S58194695 A JPS58194695 A JP S58194695A JP 57076155 A JP57076155 A JP 57076155A JP 7615582 A JP7615582 A JP 7615582A JP S58194695 A JPS58194695 A JP S58194695A
Authority
JP
Japan
Prior art keywords
intake
passage
flywheel
fins
intake passage
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
JP57076155A
Other languages
Japanese (ja)
Inventor
Masaki Okazaki
正喜 岡崎
Hiroaki Fujimoto
博昭 藤本
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 Marine Co Ltd
Yamaha Motor Co Ltd
Original Assignee
Yamaha Motor Co Ltd
Sanshin Kogyo KK
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, Sanshin Kogyo KK filed Critical Yamaha Motor Co Ltd
Priority to JP57076155A priority Critical patent/JPS58194695A/en
Publication of JPS58194695A publication Critical patent/JPS58194695A/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
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles
    • F02M35/165—Marine vessels; Ships; Boats
    • F02M35/167—Marine vessels; Ships; Boats having outboard engines; Jet-skis
    • 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
    • F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
    • F02B61/04—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers
    • F02B61/045—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers for outboard marine engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1015—Air intakes; Induction systems characterised by the engine type
    • F02M35/10157—Supercharged engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10262—Flow guides, obstructions, deflectors or the like
    • 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)
  • Ocean & Marine Engineering (AREA)
  • Supercharger (AREA)

Abstract

PURPOSE:To compensate flow path resistance in a water drip preventive intake passage of labyrinth construction, by providing fins onto a flywheel of a magneto, allowing the intake passage to front to the fins and using the fins as a supercharge fan. CONSTITUTION:Intake air of an engine 1 flows from a rear intake port 8 in an intake port passage 7, intake passage 11 and a silencer 12 to reach carburetor 13. Fins 6 are provided to a flywheel magneto 5 and the magneto 5 is positioned between the passages 7 and 11. The fin 6 forcibly feeds intake air to a passage 10 and operates as a supercharger. In this way, even if the intake passage becomes longer to increase flow path resistance, intake efficiency is not decreased.

Description

【発明の詳細な説明】 本発明は、過給機を備えた船外機の吸気装置に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an intake system for an outboard motor equipped with a supercharger.

船外機のエンジンには、航走にともなって巻き上げる氷
粒の侵入を阻止するためにカウリングが被覆されており
、したがってエンジンの吸気はこのカウリングの後部に
設けた吸気口通路を介して行なっている。しかし、この
吸気口通路もカウリング内外を連通ずる単なる解放通路
であっては、微粒化し友氷粒がカウリング内に侵入しエ
ンジン内に吸入されあるいは電装品に付着してエンジン
トラブルの原因となる０特に塩分をともなう氷粒の場合
、塩分が気化器内あるいは電装系に付着することはエン
ジントラブルが端的に現われきわめて具合が悪い。The engine of an outboard motor is covered with a cowling to prevent the intrusion of ice particles that are thrown up during sailing. Therefore, air intake into the engine is performed through the intake passage provided at the rear of the cowling. There is. However, if this intake passage is simply an open passage that communicates between the inside and outside of the cowling, the atomized ice particles may enter the cowling and be sucked into the engine or adhere to electrical components, causing engine trouble. Particularly in the case of ice particles that contain salt, if the salt adheres to the inside of the carburetor or the electrical system, this will clearly indicate engine trouble and is extremely inconvenient.

そこで、一般の船外機においては、カウリングの吸気口
を必要最小限の大きさとすると共に、吸気口からカウリ
ング内に至る通路をいわゆる迷路構造とし、通路ＭｉＩ
ｉｉ等に氷粒會付着させることに１って氷粒の侵入を阻
止する構造を採っている。Therefore, in general outboard motors, the intake port of the cowling is made the minimum necessary size, and the passage from the intake port to the inside of the cowling is made into a so-called labyrinth structure.
In order to allow ice particles to adhere to the parts such as ii, etc., a structure is adopted that prevents ice particles from entering.

この友めカウリング外から気化器に至るまでの流路抵抗
が増加し、充分な吸気が得られないという不具合が起き
る。This increases the resistance of the flow path from the outside of the cowling to the carburetor, causing the problem that sufficient intake air cannot be obtained.

本発明はこのような不具合を解消すべくなされたもので
−もともとカウリングの吸気口と気化器間に位置するフ
ライホイールマグネドウのフライホイール上にフィンを
設け、こｆ′Ｌｔ″過給用のファンとして使用すること
に１９、エンジンの給気比を向上させた船外機の吸気装
置を提供するものである。以下、その構成等を図に示す
実施例によって詳細に説明する。The present invention was made in order to solve this problem.A fin was originally provided on the flywheel of the flywheel magne dow located between the intake port of the cowling and the carburetor. The present invention provides an intake device for an outboard motor that is used as a fan and improves the air supply ratio of the engine.The configuration thereof will be explained in detail below with reference to an embodiment shown in the drawings.

第１図は本発明の吸気装置を示す要部の断面図、第２図
は平面図で、これらの図において、符号１で示すものは
エンジンの外形形状を示し、このエンジン１はカウリン
グボトム２お↓びケーシング３に工って支持され、上部
お工び周囲はトップカウリング４に１って覆われている
０このエンジン１のクランク細々端部はクランクケース
外に突出され、そこにはフライホイールマグネドウのフ
ライホイール５が固定されている。なお、このフライホ
イールマグネドウについては周知のものなので詳細な説
明は省略する。前記フライホイール５の上面には、多数
のフィン６が放射状に突設されており、こｎが後述する
過給機としてのファンとして機能する。Fig. 1 is a cross-sectional view of the main parts of the intake system of the present invention, and Fig. 2 is a plan view. The engine 1's crank is supported by the casing 3, and the upper part is covered by the top cowling 4.The narrow ends of the crank of this engine 1 protrude outside the crankcase, and there is no The flywheel 5 of the wheel magneto is fixed. Note that this flywheel magnet is well known, so a detailed explanation will be omitted. A large number of fins 6 are radially protruded from the upper surface of the flywheel 5, and these fins 6 function as a fan serving as a supercharger, which will be described later.

トップカウリング４の後方（図において右方）止血には
、吸気口通路７を構成する凹陥部Ｔ１お工びダク）７ｂ
が設けられ、これらは後部吸気口８を除きカバープレー
トＴｃに１って覆われている。ダク）　７ｂは凹陥部７
ａ内に開口しかつ突出する筒部７ｄ　　と、前記フィン
６の周囲付近に開口するダクトとから形成され、このダ
クトはフライホイール５の略々接線方向を指向するよう
に形成されている。To stop bleeding at the rear of the top cowling 4 (on the right side in the figure), a concave portion T1 constituting the intake passage 7 is used.
are provided, and these, except for the rear air intake port 8, are covered by the cover plate Tc. 7b is the concave part 7
It is formed of a cylindrical portion 7d that opens and protrudes into the fin 6, and a duct that opens near the periphery of the fin 6, and the duct is oriented approximately in the tangential direction of the flywheel 5.

１０は前記トップカウリング４と共に吸気通路１１を形
成する通路壁で、その後−縁の一部を除き全周縁がトッ
プカウリング４の内壁面に接合さｊている。この吸気通
路１１は、一端が前記フィン６の周囲付近に開口され他
端はサイレンサ１２を介して気化器１３の吸気口に接続
されている。Reference numeral 10 denotes a passage wall that forms an intake passage 11 together with the top cowling 4, and its entire peripheral edge except for a part of the rear edge is joined to the inner wall surface of the top cowling 4. The intake passage 11 has one end opened near the fin 6 and the other end connected to an intake port of a carburetor 13 via a silencer 12.

すなわち、通路［１０の後方にはフライホイール５の接
線方図を指向するように形成さ４次ダクト１０ａ　を有
し、またその前部にはサイレンツ１２に接続される開口
１０ｂが穿設されている。この開口１０ｂ　には一方の
端面が傾斜する面に形成さｎた環状の弾性部材１５が固
定さｊている。サイレンｆ−１２は気化器１３の吸気口
部に取付けられた保持器１２藤　と、この保持器１２＆
に被冠し固　　　　、′１定さｆ′した力’＜−１２ｂ
　　とから構成され、カバー１２ｂの一部に突設さｊか
つ開口端が前記弾性部材１５と対接する１うに傾斜する
筒部１２ｃ　　をもって吸気通路１１に接続される０す
なわち、トップカウリング４を被冠することに工って開
口部１０ｂ　Ｖｉ、’ｆ４’性部材１５を介してサイレ
ンサ１２に連通する。That is, at the rear of the passage [10] there is a quaternary duct 10a formed so as to be oriented in the tangential direction of the flywheel 5, and in the front part thereof, an opening 10b connected to the silencer 12 is bored. There is. An annular elastic member 15 whose one end surface is inclined is fixed to this opening 10b. The siren f-12 has a retainer 12 attached to the intake port of the carburetor 13, and this retainer 12 &
, '1 constant f'force'<-12b
a cylindrical portion 12c projecting from a part of the cover 12b and having an open end facing the elastic member 15 and connected to the intake passage 11; In this way, the opening 10b Vi communicates with the silencer 12 via the 'f4' member 15.

し友がって、エンジン１が駆動しフライホイール５が回
転すると、吸気口８お工び吸気通路Ｔからカウリング２
，４内に吸入される空気は、フイ／６のファン作用に１
って加速さｊ、ダクト１０籐に圧送さ１、吸気通路１１
、開口部１０ｂお工びサイレンサ１２を通って気化器１
３へと供給さｊ。When the engine 1 is driven and the flywheel 5 rotates, the intake port 8 is opened and the cowling 2 is opened from the intake passage T.
, 4, the air sucked into 5/6 is 1
is accelerated, duct 10 is pumped into rattan 1, intake passage 11
, the carburetor 1 passes through the opening 10b and the silencer 12.
Supplied to 3.

る０ なお、図に示す実施例では、フィン６０Ｍ１囲をトップ
カウリング４の外壁に！つて覆うものとしたが、トップ
カウリング４の上板内側にフイ／６の周囲を榎う環状壁
を立設するか、あるいはエンジンケースＶｃ設けたフラ
イホイールカバーを利用してフィン６の周囲ヲ榎い強制
的に空気を圧送する構造としても工い０ 以上説明しｆｃように本発明によれば、フライホイール
マグネドウのフライホイールを利用して過給用のファン
を形成したから、吸気通路の一部を改造するのみで、エ
ンジン構成等は一切変える必賛がなく効果的な吸気が行
なえる０また、７ア／Ｈｔｙ）カバーないしダクトヲト
ップカウリングに一体的に設けられるから、こｎ、らが
カウリングの補強となるばかりか、エンジン騒音の透過
を抑制する作用ももつ０In the embodiment shown in the figure, the fin 60M1 surround is placed on the outer wall of the top cowling 4! However, an annular wall that surrounds the fin 6 may be erected on the inside of the upper plate of the top cowling 4, or a flywheel cover provided on the engine case Vc may be used to cover the fin 6. As explained above, according to the present invention, the supercharging fan is formed using the flywheel of the flywheel magnet, so that the air intake passage can be Effective intake can be achieved by only partially modifying the engine configuration without having to change anything.In addition, since it is integrated with the top cowling of the 7A/Hty) cover or duct, this Not only do they strengthen the cowling, but they also have the effect of suppressing the transmission of engine noise.

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

第１図は本発明に係る吸気装置の一実施例を示す縦断−
面図、第２図は則じく平面図である。 １・ｓｅｅエンジン、４０−・・トップカウリング、５
・・・・フライホイール、６・會・・フィン、１・・・
・吸気口通路、１１・自・・吸気通路、１３−・・・気
化器。 特許社、ｉａ人　　ヤマハ発動Ｉ１１株式会社三信Ｔ業
株式会社 代珈人　出用政樹（ほか１名）FIG. 1 is a longitudinal section showing an embodiment of the intake device according to the present invention.
The top view and FIG. 2 are generally plan views. 1.see engine, 40-...top cowling, 5
...Flywheel, 6...Fin, 1...
-Intake passageway, 11-Self-intake passageway, 13-... Carburetor. Tokensha, IA person Yamaha Motor I11 Co., Ltd. Sanshin T-gyo Co., Ltd. Masaki Izuyou (and 1 other person)

Claims (1)

【特許請求の範囲】[Claims] フライホイールマグネドウのフライホイール上部にフィ
ン會放射状に設けると共に、トップカウリングの吸気口
通路および気化器に連通する吸気通路の一端を前記フィ
ンの周囲付近に臨ませ次ことを特徴とする船外機の吸気
装置。An outboard motor characterized in that fins are provided radially above the flywheel of a flywheel magnet, and one end of the intake passage communicating with the intake passage of the top cowling and the carburetor faces near the periphery of the fin. intake device.
JP57076155A 1982-05-07 1982-05-07 Intake device of outboard engine Pending JPS58194695A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57076155A JPS58194695A (en) 1982-05-07 1982-05-07 Intake device of outboard engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57076155A JPS58194695A (en) 1982-05-07 1982-05-07 Intake device of outboard engine

Publications (1)

Publication Number Publication Date
JPS58194695A true JPS58194695A (en) 1983-11-12

Family

ID=13597140

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57076155A Pending JPS58194695A (en) 1982-05-07 1982-05-07 Intake device of outboard engine

Country Status (1)

Country Link
JP (1) JPS58194695A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2600617A1 (en) * 1986-06-26 1987-12-31 Outboard Marine Corp AIR INTAKE SYSTEM FOR MARINE PROPULSION DEVICE
US5052353A (en) * 1990-05-18 1991-10-01 Outboard Marine Corporation Marine propulsion device cowl assembly
US5080618A (en) * 1990-05-18 1992-01-14 Outboard Marine Corporation Marine propulsion device cowl assembly
US5445547A (en) * 1992-05-22 1995-08-29 Honda Giken Kogyo Kabushiki Kaisha Outboard motor
US6429564B1 (en) * 2000-09-20 2002-08-06 Mitsubishi Denki Kabushiki Kaisha Magneto generator
EP3236046A1 (en) * 2016-04-20 2017-10-25 Neander Motors AG Combustion engine for an outboard motor
EP3236045A1 (en) * 2016-04-20 2017-10-25 Neander Motors AG Outboard motor, comprising a combustion engine

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2600617A1 (en) * 1986-06-26 1987-12-31 Outboard Marine Corp AIR INTAKE SYSTEM FOR MARINE PROPULSION DEVICE
JPS638098A (en) * 1986-06-26 1988-01-13 アウトボ−ド・マ−リン・コ−ポレ−シヨン Ship propulsion device
DE3719182A1 (en) * 1986-06-26 1988-01-14 Outboard Marine Corp SHIP DRIVE DEVICE WITH AIR SUCTION SYSTEM
US4734070A (en) * 1986-06-26 1988-03-29 Outboard Marine Corporation Marine propulsion device air intake system
BE1001639A5 (en) * 1986-06-26 1990-01-09 Outboard Marine Corp System air intake device for marine engines.
US5052353A (en) * 1990-05-18 1991-10-01 Outboard Marine Corporation Marine propulsion device cowl assembly
US5080618A (en) * 1990-05-18 1992-01-14 Outboard Marine Corporation Marine propulsion device cowl assembly
US5445547A (en) * 1992-05-22 1995-08-29 Honda Giken Kogyo Kabushiki Kaisha Outboard motor
US6429564B1 (en) * 2000-09-20 2002-08-06 Mitsubishi Denki Kabushiki Kaisha Magneto generator
EP3236046A1 (en) * 2016-04-20 2017-10-25 Neander Motors AG Combustion engine for an outboard motor
EP3236045A1 (en) * 2016-04-20 2017-10-25 Neander Motors AG Outboard motor, comprising a combustion engine
US10220927B2 (en) 2016-04-20 2019-03-05 Neander Motors Ag Outboard motor, comprising an internal combustion engine

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