JPH0552107A - Outboard motor consisting of loaded four cycle engine - Google Patents

Outboard motor consisting of loaded four cycle engine

Info

Publication number
JPH0552107A
JPH0552107A JP3232493A JP23249391A JPH0552107A JP H0552107 A JPH0552107 A JP H0552107A JP 3232493 A JP3232493 A JP 3232493A JP 23249391 A JP23249391 A JP 23249391A JP H0552107 A JPH0552107 A JP H0552107A
Authority
JP
Japan
Prior art keywords
engine
drive shaft
gear
gear pump
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
JP3232493A
Other languages
Japanese (ja)
Other versions
JP3074833B2 (en
Inventor
Keisuke Daikoku
圭介 大穀
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.)
Suzuki Motor Corp
Original Assignee
Suzuki Motor 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 Suzuki Motor Corp filed Critical Suzuki Motor Corp
Priority to JP03232493A priority Critical patent/JP3074833B2/en
Publication of JPH0552107A publication Critical patent/JPH0552107A/en
Application granted granted Critical
Publication of JP3074833B2 publication Critical patent/JP3074833B2/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
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/20—Multi-cylinder engines with cylinders all in one line
    • 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 marine engines
    • 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
    • F02B2075/1808—Number of cylinders two
    • 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
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/20—SOHC [Single overhead camshaft]

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

PURPOSE:To simplify a structure with a contact surface for installing an engine enlarged by such constitution that the oil pump of an engine is provided on the bottom side of an oil pan to be a gear pump, which is oscillated by a drive shaft, primary deceleration is carried out by the gear of the gear pump so as to connect a lower drive shaft, thereto. CONSTITUTION:A drive shaft 6 connected to the crank shaft 5 of an engine 3 loaded on an engine holder 2 is inserted inside the drive shaft housing 1 provided on the lower side of the engine holder 2, and a gear pump 7 for the oil pump of the engine 3 is connected to the lower end of the drive shaft 6. Primary deceleration is carried out by the gear of the gear pump 7 to connect a lower drive shaft 9, and the lower drive shaft 9 is off-set on the rear side of the drive shaft 6.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】この発明は、四サイクルエンジン
を搭載する船外機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outboard motor equipped with a four-cycle engine.

【０００２】[0002]

【従来の技術】船外機は、ドライブシャフトハウジング
の上に連結するエンジンホルダー上にエンジンを搭載す
るようにしている。そして、四サイクルエンジンを搭載
する場合は、クランク軸端に一次減速ギヤーを連結し
て、ドライブシャフトを連結し、クランク軸に対してド
ライブシャフトを後側にオフセットさせ、エンジンを重
量バランスよくエンジンホルダー上に搭載するようにし
ている。又、四サイクルエンジンの場合は、エンジンホ
ルダーからドライブシャフトハウジング内に突出させ
て、潤滑オイルを収容するオイルパンを連結している。
又、エンジンの下側には、オイルポンプを取付けてい
て、エンジンとエンジンホルダーの連結部付近の構造が
複雑になっている。例えば、特開平１−２４４１０８号
公報参照。2. Description of the Related Art In an outboard motor, an engine is mounted on an engine holder connected to a drive shaft housing. If a four-cycle engine is installed, the primary reduction gear is connected to the crankshaft end, the driveshaft is connected, and the driveshaft is offset rearward with respect to the crankshaft, so that the engine is well-balanced and the engine holder I am trying to mount it on top. Also, in the case of a four-cycle engine, an oil pan for containing lubricating oil is connected by projecting from the engine holder into the drive shaft housing.
Further, an oil pump is attached to the lower side of the engine, and the structure near the connecting portion between the engine and the engine holder is complicated. See, for example, Japanese Patent Application Laid-Open No. 1-244108.

【０００３】[0003]

【発明が解決しようとする課題】エンジンの下側と、エ
ンジンホルダー部分の構造が複雑であるので、エンジン
ホルダー上に搭載するエンジンの接合面が少くなり、剛
性を保つのが不利になって、振動や騒音の発生が増す不
具合がある。Since the structure of the lower side of the engine and the engine holder portion is complicated, the joint surface of the engine mounted on the engine holder becomes small, and it becomes disadvantageous to maintain the rigidity. There is a problem that vibration and noise increase.

【０００４】かかる点に鑑み、エンジンのオイルポンプ
をオイルパンの下側に設けて、ギヤーポンプにしてドラ
イブシャフトで駆動し、ギヤーポンプのギヤーで一次減
速させてロアードライブシャフトを連結し、エンジン取
付けの接合面が大きくとれて構造も簡単にできる四サイ
クルエンジンを搭載する船外機を得ることを目的とす
る。In view of the above point, the engine oil pump is provided below the oil pan, and the gear pump is driven by the drive shaft, and the gear of the gear pump is used for primary deceleration to connect the lower drive shaft to join the engine. The objective is to obtain an outboard motor equipped with a four-cycle engine whose surface is large and whose structure is simple.

【０００５】[0005]

【課題を解決するための手段】上記目的を達成するため
に、この発明の四サイクルエンジンを搭載する船外機
は、エンジンホルダー上に搭載したエンジンのクランク
シャフトに連結したドライブシャフトを下側のドライブ
シャフトハウジング内に挿入し、ドライブシャフト下端
にエンジンのオイルポンプ用のギヤーポンプを連結し、
ギヤーポンプのギヤーで一次減速して、ロアードライブ
シャフトを連結し、ドライブシャフトの後側にロアード
ライブシャフトをオフセットしたことにある。In order to achieve the above object, an outboard motor equipped with a four-cycle engine according to the present invention has a drive shaft connected to a crankshaft of the engine mounted on an engine holder on the lower side. Insert into the drive shaft housing, connect the gear pump for the engine oil pump to the lower end of the drive shaft,
The primary reason is that the gear of the gear pump is first decelerated, the lower drive shaft is connected, and the lower drive shaft is offset to the rear side of the drive shaft.

【０００６】[0006]

【作用】オイルポンプ用のギヤーポンプは、エンジンの
運転中ドライブシャフトで駆動され、オイルパンの潤滑
オイルをエンジンに汲上げて送り、エンジンを潤滑す
る。ギヤーポンプのギヤーは、一次減速に用いられて、
ロアードライブシャフトを減速して回転駆動する。ギヤ
ーポンプをドライブシャフトの下端に設けることによっ
て、エンジンホルダーとエンジンの接合部分の構造を簡
単にでき、接合面積を大きくできて、剛性を高めること
ができ、振動や騒音の発生を少くできる。A gear pump for an oil pump is driven by a drive shaft while the engine is in operation, and pumps lubricating oil in an oil pan to the engine to feed the lubricating oil to the engine. The gear of the gear pump is used for primary deceleration,
The lower drive shaft is decelerated and driven to rotate. By providing the gear pump at the lower end of the drive shaft, the structure of the joint portion between the engine holder and the engine can be simplified, the joint area can be increased, the rigidity can be increased, and vibration and noise can be reduced.

【０００７】[0007]

【実施例】以下、本発明の実施例を図１乃至図３によっ
て説明する。ドライブシャフトハウジング１の上面に
は、エンジンホルダー２を連結し、エンジンホルダー２
上にエンジン３を連結する。エンジンホルダー２には、
下方に突出させてオイルパン４を連結し、所定量のエン
ジン３の潤滑オイルを収容している。エンジン３のクラ
ンクシャフト５は、前側に寄せて設けてあり、クランク
シャフト５に、ドライブシャフト６を連結してある。ド
ライブシャフト６は、下端に、オイルポンプ用のギヤー
ポンプ７を連結する。ギヤーポンプ７は、ストレーナー
８を介して、オイルパン４の下端に連結し、ギヤーポン
プ７の吐出口はエンジン３に連結して各部に潤滑オイル
が回るようにしてある。ギヤーポンプ７の一対のギヤー
は、一次減速ギヤーにもしてあって、ロアードライブシ
ャフト９をギヤーポンプ７に連結し、ロアードライブシ
ャフト９は、ギヤーポンプ７の軸間距離だけ後側にオフ
セットする。ロアードライブシャフト９は、ギヤーケー
ス１０内に収容したベベルギヤ１１を介し、プロペラシ
ャフト１２を駆動して、プロペラ１３を回転させる。Embodiments of the present invention will be described below with reference to FIGS. The engine holder 2 is connected to the upper surface of the drive shaft housing 1,
Connect the engine 3 on top. In the engine holder 2,
The oil pan 4 is connected so as to project downward and accommodates a predetermined amount of lubricating oil for the engine 3. The crankshaft 5 of the engine 3 is provided closer to the front side, and the driveshaft 6 is connected to the crankshaft 5. The drive shaft 6 has a lower end connected to a gear pump 7 for an oil pump. The gear pump 7 is connected to the lower end of the oil pan 4 via a strainer 8, and the discharge port of the gear pump 7 is connected to the engine 3 so that lubricating oil can be supplied to each part. The pair of gears of the gear pump 7 is also a primary reduction gear, and connects the lower drive shaft 9 to the gear pump 7, and the lower drive shaft 9 is offset rearward by the axial distance of the gear pump 7. The lower drive shaft 9 drives the propeller shaft 12 via the bevel gear 11 housed in the gear case 10 to rotate the propeller 13.

【０００８】オイルポンプ用のギヤーポンプ７は、ドラ
イブシャフト６の下端に設けることにより、エンジン３
の下部の構造が簡単になる。又、オイルパン４は、スト
レーナー８を下側に出してオイルパン４の下端にパイプ
連結するので、オイルパン４内にストレーナー８を挿入
しなくてもよく、オイルパン４の構造も簡単になる。こ
れによって、エンジンホルダー２上の取付けるエンジン
３の接合面を大きくとれ、エンジン３の取付け剛性が高
くなって、振動や、騒音の発生を軽減できる。又、ギヤ
ーポンプ７のギヤーは、一次減速に用いて、ロアードラ
イブシャフト９を連結するので、一次減速と共に、ロア
ードライブシャフト９を後側にオフセットすることがで
きる。The gear pump 7 for the oil pump is provided at the lower end of the drive shaft 6 so that the engine 3
The structure of the lower part of is simplified. Further, since the oil pan 4 has the strainer 8 exposed downward and is pipe-connected to the lower end of the oil pan 4, it is not necessary to insert the strainer 8 into the oil pan 4, and the structure of the oil pan 4 is simplified. .. As a result, the joint surface of the engine 3 to be mounted on the engine holder 2 can be made large, the mounting rigidity of the engine 3 can be increased, and vibration and noise can be reduced. Further, since the gear of the gear pump 7 is used for primary deceleration and connects the lower drive shaft 9, the lower drive shaft 9 can be offset to the rear side together with the primary deceleration.

【０００９】[0009]

【発明の効果】以上説明したように、この発明は上述の
ように構成したので、オイルポンプ用のギヤーポンプを
エンジン部分から外すことができ、オイルパン内も簡単
にできて、エンジンホルダーとエンジンの接合面積を大
きくでき、エンジン取付けの剛性を高めて、振動や騒音
の発生を少くできる。又、ギヤーポンプは、オイルポン
プとしてだけでなく、一次減速とロアードライブシャフ
トのオフセットの役目も果していて、エンジンに、一次
減速ギヤを設けなくてよくなり、構造を簡単にできる。
そして、ギヤーケース内のベベルギヤーの減速比を小さ
くでき、ギヤーケースの小型化を図ることができる。As described above, since the present invention is configured as described above, the gear pump for the oil pump can be removed from the engine part, and the inside of the oil pan can be easily formed, so that the engine holder and the engine can be easily connected. The joint area can be increased, the rigidity of engine mounting can be increased, and vibration and noise can be reduced. Further, the gear pump serves not only as an oil pump but also as a primary deceleration and an offset for the lower drive shaft, so that the engine does not need to be provided with a primary reduction gear and the structure can be simplified.
Then, the reduction ratio of the bevel gear in the gear case can be reduced, and the gear case can be downsized.

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

【図１】本発明の実施例を示す要部の縦断面図である。FIG. 1 is a vertical sectional view of a main part showing an embodiment of the present invention.

【図２】本発明の実施例を示すギヤーポンプ部分の横断
面図である。FIG. 2 is a cross-sectional view of a gear pump portion showing an embodiment of the present invention.

【図３】本発明の実施例を示す全体側面図である。FIG. 3 is an overall side view showing an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

１ ドライブシャフトハウジング ２ エンジンホルダー ３ エンジン ５ クランクシャフト ６ ドライブシャフト ７ ギヤーポンプ ９ ロアードライブシャフト 1 Drive Shaft Housing 2 Engine Holder 3 Engine 5 Crank Shaft 6 Drive Shaft 7 Gear Pump 9 Lower Drive Shaft

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｆ０２Ｂ 67/04 Ｃ 9247−3Ｇ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location F02B 67/04 C 9247-3G

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 エンジンホルダー上に搭載したエンジン
のクランクシャフトに連結したドライブシャフトを下側
のドライブシャフトハウジング内に挿入し、ドライブシ
ャフト下端にエンジンのオイルポンプ用のギヤーポンプ
を連結し、ギヤーポンプのギヤーで一次減速して、ロア
ードライブシャフトを連結し、ドライブシャフトの後側
にロアードライブシャフトをオフセットしたことを特徴
とする四サイクルエンジンを搭載する船外機。1. A drive shaft connected to a crank shaft of an engine mounted on an engine holder is inserted into a lower drive shaft housing, a gear pump for an oil pump of the engine is connected to a lower end of the drive shaft, and a gear of the gear pump. An outboard motor equipped with a four-cycle engine, which is characterized by first decelerating with, connecting the lower drive shaft, and offsetting the lower drive shaft to the rear side of the drive shaft.
JP03232493A 1991-08-21 1991-08-21 Outboard motor with four-cycle engine Expired - Lifetime JP3074833B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP03232493A JP3074833B2 (en) 1991-08-21 1991-08-21 Outboard motor with four-cycle engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP03232493A JP3074833B2 (en) 1991-08-21 1991-08-21 Outboard motor with four-cycle engine

Publications (2)

Publication Number Publication Date
JPH0552107A true JPH0552107A (en) 1993-03-02
JP3074833B2 JP3074833B2 (en) 2000-08-07

Family

ID=16940187

Family Applications (1)

Application Number Title Priority Date Filing Date
JP03232493A Expired - Lifetime JP3074833B2 (en) 1991-08-21 1991-08-21 Outboard motor with four-cycle engine

Country Status (1)

Country Link
JP (1) JP3074833B2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007021018A1 (en) * 2005-08-19 2007-02-22 Yamaha Marine Kabushiki Kaisha Outboard motor
JP2007051616A (en) * 2005-08-19 2007-03-01 Yamaha Marine Co Ltd Outboard motor
JP2007246012A (en) * 2006-03-17 2007-09-27 Yamaha Marine Co Ltd Outboard motor
EP1873374A1 (en) 2006-06-30 2008-01-02 Honda Motor Co., Ltd Marine propulsion machine having drive shaft
JP2008007068A (en) * 2006-06-30 2008-01-17 Honda Motor Co Ltd Marine vessel propulsive machine furnished with drive shaft
JP2008007070A (en) * 2006-06-30 2008-01-17 Honda Motor Co Ltd Marine vessel propulsive machine furnished with drive shaft
US7507129B2 (en) 2006-06-30 2009-03-24 Honda Motor Co., Ltd. Marine propulsion machine having drive shaft
US9452813B2 (en) 2014-07-01 2016-09-27 Yamaha Hatsudoki Kabushiki Kaisha Outboard motor and oil pan unit for outboard motor

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007021018A1 (en) * 2005-08-19 2007-02-22 Yamaha Marine Kabushiki Kaisha Outboard motor
JP2007051616A (en) * 2005-08-19 2007-03-01 Yamaha Marine Co Ltd Outboard motor
JP2007246012A (en) * 2006-03-17 2007-09-27 Yamaha Marine Co Ltd Outboard motor
EP1873374A1 (en) 2006-06-30 2008-01-02 Honda Motor Co., Ltd Marine propulsion machine having drive shaft
JP2008007068A (en) * 2006-06-30 2008-01-17 Honda Motor Co Ltd Marine vessel propulsive machine furnished with drive shaft
JP2008007070A (en) * 2006-06-30 2008-01-17 Honda Motor Co Ltd Marine vessel propulsive machine furnished with drive shaft
US7507129B2 (en) 2006-06-30 2009-03-24 Honda Motor Co., Ltd. Marine propulsion machine having drive shaft
US7625255B2 (en) 2006-06-30 2009-12-01 Honda Motor Co., Ltd. Marine propulsion machine provided with drive shaft
US9452813B2 (en) 2014-07-01 2016-09-27 Yamaha Hatsudoki Kabushiki Kaisha Outboard motor and oil pan unit for outboard motor

Also Published As

Publication number Publication date
JP3074833B2 (en) 2000-08-07

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