JPS62338B2 - - Google Patents
Info
- Publication number
- JPS62338B2 JPS62338B2 JP57188120A JP18812082A JPS62338B2 JP S62338 B2 JPS62338 B2 JP S62338B2 JP 57188120 A JP57188120 A JP 57188120A JP 18812082 A JP18812082 A JP 18812082A JP S62338 B2 JPS62338 B2 JP S62338B2
- Authority
- JP
- Japan
- Prior art keywords
- crankshaft
- crankcase
- transmission
- cam chain
- 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.)
- Expired
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
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/02—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving cycles
-
- 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
- F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Description
【発明の詳細な説明】
本発明は、自動２輪車その他の主として車両に
搭載されるＶ型エンジンに関し、更に詳細には、
クランクケース上に前後１対のシリンダを略Ｖ字
状に配置すると共に、該各シリンダの頂部に該ク
ランクケース内のクランクシヤフトによりカムチ
エーンを介して駆動される動弁カムシヤフトを備
えた頭上カム弁式のＶ型エンジンに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a V-type engine installed mainly in a vehicle such as a motorcycle, and more specifically,
An overhead cam valve type in which a pair of front and rear cylinders are arranged in a roughly V-shape on the crankcase, and a valve drive camshaft is provided at the top of each cylinder, which is driven by the crankshaft in the crankcase via a cam chain. This invention relates to a V-type engine.
従来この種エンジンとして、クランクケース内
に、クランクシヤフトの後方に位置して変速機を
収容し、該変速機のメインシヤフトに、その軸端
に備える該クランクシヤフトとの連結機構の配置
部内側に位置して該クランクケースの下部に備え
るオイルポンプの駆動部材、例えばチエーンスプ
ロケツトを配置するようにしたものは知られる。 Conventionally, this type of engine has housed a transmission located behind the crankshaft in the crankcase, and a connecting mechanism with the crankshaft provided at the shaft end of the transmission is located inside the main shaft of the transmission. It is known that a driving member of an oil pump, such as a chain sprocket, is located in the lower part of the crankcase.
ここでＶ型エンジンは、後側シリンダの後方へ
の傾斜角を増してエンジン全体の小型化を図るこ
とが望まれるが、かくするときはクランクシヤフ
トから該後側シリンダにのびるカムチエーンの後
傾により該カムチエーンの後側部とクランクシヤ
フト後方の変速機のメインシヤフトとの間隔が狭
められ、該カムチエーンの後側部に沿わせて設け
るチエーンテンシヨナやチエーンガイド等の部材
の配置スペースを確保するには、該カムチエーン
を該メインシヤフト上に設ける高速ギア等の大径
の回動部材に合致しない軸方向位置に配置する必
要があり、そこで従来、クランクシヤフトの上記
連結機構の配置側端部とは逆側のジエネレータの
配置側端部にこの条件を満す軸方向スペースを特
別に確保し、これに前側シリンダのカムチエーン
に隣接して後側シリンダのカムチエーンを配置す
るようにしたものも知られるが、このものでは後
側シリンダのカムチエーンを配置するための軸方
向スペースの分だけジエネレータが外側に張り出
して、エンジンの軸方向寸法が増す不都合を伴
う。 Here, in a V-type engine, it is desirable to increase the rearward inclination angle of the rear cylinder to make the entire engine smaller. The distance between the rear side of the cam chain and the main shaft of the transmission behind the crankshaft is narrowed to ensure space for the arrangement of members such as chain tensioners and chain guides installed along the rear side of the cam chain. In this case, it is necessary to arrange the cam chain at an axial position that does not coincide with a large-diameter rotating member such as a high-speed gear provided on the main shaft. It is also known that an axial space that satisfies this condition is specially secured at the end of the generator on the opposite side, and the cam chain of the rear cylinder is placed adjacent to the cam chain of the front cylinder. In this case, the generator protrudes outward to accommodate the axial space for arranging the cam chain of the rear cylinder, resulting in an increase in the axial dimension of the engine.
本発明は、上記したオイルポンプの駆動部材に
対応するクランクシヤフト側の軸方向スペースが
デツドスペースになつていることに着目し、この
スペースを後側シリンダのカムチエーンの配置ス
ペースとして利用することにより上記の不都合を
解消したＶ型エンジンを提供することをその目的
とするもので、クランクケース上に前後１対のシ
リンダを略Ｖ字状に配置すると共に、該各シリン
ダの頂部に該クランクケース内のクランクシヤフ
トによりカムチエーンを介して駆動される動弁カ
ムシヤフトを備えた頭上カム弁式のＶ型エンジン
であつて、該クランクケース内に、該クランクシ
ヤフトの後方に位置して変速機を収容し、該変速
機のメインシヤフトに、その軸端に備える該クラ
ンクシヤフトとの連結機構の配置部内側に位置し
て該クランクケースの下部に備えるオイルポンプ
の駆動部材を配置するものにおいて、後側のシリ
ンダに備える該カムチエーンを該駆動部材に合致
する軸方向位置に配置したことを特徴とする。 The present invention focuses on the fact that the axial space on the crankshaft side corresponding to the drive member of the oil pump described above is a dead space, and by utilizing this space as a space for arranging the cam chain of the rear cylinder, the above-mentioned The purpose of this engine is to provide a V-type engine that eliminates these inconveniences.A pair of front and rear cylinders are arranged on the crankcase in a substantially V-shape, and a crankshaft inside the crankcase is mounted on the top of each cylinder. It is an overhead cam valve type V-type engine equipped with a valve camshaft driven by a shaft via a cam chain, and a transmission is housed in the crankcase located behind the crankshaft, and the transmission is located behind the crankshaft. A drive member for an oil pump located at the lower part of the crankcase and located inside the arrangement part of the connection mechanism with the crankshaft provided at the shaft end of the main shaft of the machine, provided in the rear cylinder. It is characterized in that the cam chain is arranged at an axial position that matches the drive member.
次いで本発明を図示の実施例に付説明する。図
面は自動２輪車Ａに搭載するＶ型エンジンＢに本
発明を適用した実施例を示し、該エンジンＢは、
クランクケース１の上方に前後１対のシリンダ
２，３を略Ｖ字状に配置すると共に、該各シリン
ダ２，３の頂部に、該クランクケース１内のクラ
ンクシヤフト４により各カムチエーン５を介して
駆動される各動弁カムシヤフト６を設けた頭上カ
ム弁式に構成される。 Next, the present invention will be explained with reference to the illustrated embodiments. The drawings show an embodiment in which the present invention is applied to a V-type engine B mounted on a motorcycle A, and the engine B has the following features:
A pair of front and rear cylinders 2 and 3 are arranged above the crankcase 1 in a substantially V-shape, and a crankshaft 4 in the crankcase 1 is connected to the top of each cylinder 2 and 3 via each cam chain 5. It is configured as an overhead cam valve type with each valve operating camshaft 6 to be driven.
図面で７は該クランクケース１内に該クランク
シヤフト４の後方に位置して設けた変速機を示
し、該変速機７は、第２図に明示する如く該クラ
ンクシヤフト４と並行に軸設した前側のメインシ
ヤフト８と後側のカウンタシヤフト９との間に複
数の変速ギア列を備えるものとし、該メインシヤ
フト８の一端部を、該クランクケース１の軸方向
一側の軸受壁１ａを通してその外側に突出させ、
その軸端に該クランクシヤフト４に連る連結機構
１０と、更に該連結機構１０の配置部内側に位置
して該クランクケース１の下部に備えるオイルポ
ンプ１１の駆動部材１２、例えば第３図及び第４
図に明示する如く該ポンプ１１の駆動軸１１ａに
チエーン１３を介して連結される駆動スプロケツ
トとを配置するものとした。該連結機構１０は、
該軸受壁１ａを通してその外側に突出させた該ク
ランクシヤフト４の軸端の出力ギア１０ａに咬合
する大径の入力ギア１０ｂと、クラツチ１０ｃと
で構成される。図面で１１ｂはオイルストレーナ
を示す。 In the drawings, reference numeral 7 indicates a transmission located behind the crankshaft 4 in the crankcase 1, and the transmission 7 is shaft-mounted in parallel with the crankshaft 4 as clearly shown in FIG. A plurality of transmission gear trains are provided between the main shaft 8 on the front side and the countershaft 9 on the rear side, and one end of the main shaft 8 is inserted through the bearing wall 1a on one axial side of the crankcase 1. protrude outward,
A coupling mechanism 10 connected to the crankshaft 4 at its shaft end, and a driving member 12 of an oil pump 11 located inside the arrangement part of the coupling mechanism 10 and provided at the lower part of the crankcase 1, for example, as shown in FIG. Fourth
As clearly shown in the figure, a drive sprocket connected to the drive shaft 11a of the pump 11 via a chain 13 is arranged. The connection mechanism 10 is
It is comprised of a large diameter input gear 10b that engages with an output gear 10a at the shaft end of the crankshaft 4 that protrudes outward through the bearing wall 1a, and a clutch 10c. In the drawing, 11b indicates an oil strainer.
ここで、前記した前側のシリンダ２用のカムチ
エーン５は、第２図に明示する如く該クランクシ
ヤフト４の該連結機構１０の配置側端部と逆側の
ジエネレータ１４の配置側端部に設けたスプロケ
ツト１５に掛渡すもので、この場合従来のもので
は、該ジエネレータ１４の配置位置を外側にずら
して、該端部に後側シリンダ３用のカムチエーン
５を掛渡すための軸方向スペースを確保するが、
本発明によれば、該クランクシヤフト４の該連結
機構１０の配置側端部の該駆動部材１２に合致す
る軸方向位置に形成されるデツドスペース、即ち
図示のものでは該軸受壁１ａと該出力ギア１０ａ
との隙間に該後側シリンダ３用のカムチエーン５
を掛渡すスプロケツト１６を設け、該カムチエー
ン５を該駆動部材１２に合致する軸方向位置に配
置せしめるものとした。 Here, the cam chain 5 for the front cylinder 2 described above is provided at the end of the crankshaft 4 on the side where the connecting mechanism 10 is located and the end on the side where the generator 14 is located, which is opposite to the end on the side where the coupling mechanism 10 is located. It is to be hung over the sprocket 15. In this case, in the conventional case, the arrangement position of the generator 14 is shifted to the outside to secure an axial space at this end for the cam chain 5 for the rear cylinder 3 to be hung over. but,
According to the present invention, a dead space is formed at an axial position of the end of the crankshaft 4 on the side where the coupling mechanism 10 is arranged and coincides with the drive member 12, that is, in the illustrated case, the bearing wall 1a and the output gear 10a
Cam chain 5 for the rear cylinder 3 is installed in the gap between
A sprocket 16 is provided to span the cam chain 5, and the cam chain 5 is arranged at an axial position that matches the drive member 12.
該カムチエーン５には、第３図に明示する如く
その前側部に沿つてチエーンガイド５ａと、その
後側部に沿つてチエーンテンシヨナ５ｂとが設け
られるが、該カムチエーン５を本発明の如く配置
するときは、該駆動部材１２が通常比較的小径の
ものに構成されるため、該後側シリンダ３の後方
への傾斜角を増しても該テンシヨナ５ｂの該駆動
部材１２への当接を生じない。 The cam chain 5 is provided with a chain guide 5a along its front side and a chain tensioner 5b along its rear side, as clearly shown in FIG. 3, and the cam chain 5 is arranged as in the present invention. In this case, since the drive member 12 is usually configured to have a relatively small diameter, the tensioner 5b does not come into contact with the drive member 12 even if the rearward inclination angle of the rear cylinder 3 is increased. .
図面で１７，１８は該ガイド５ａと該テンシヨ
ナ５ｂの下端の受座を示し、これらは軸受壁１ａ
に一体に突設される。 In the drawing, reference numerals 17 and 18 indicate seats at the lower ends of the guide 5a and the tensioner 5b, which correspond to the bearing wall 1a.
It is installed integrally with the
この様に本発明によるときは、変速機のメイン
シヤフトにクランクシヤフトとの連結機構の配置
部内側に位置してポンプ駆動用の駆動部材を設け
ることにより生ずるクランクシヤフト側のデツド
スペースを利用すべく、該駆動部材に合致する軸
方向位置に後側シリンダ用のカムチエーンを配置
するもので、エンジンの軸方向寸法を短縮して且
つ後側シリンダの後方への傾斜角を増すことが出
来、エンジンを可及的に小型化出来る効果を有す
る。 As described above, according to the present invention, in order to utilize the dead space on the crankshaft side that is created by providing the drive member for driving the pump located inside the arrangement part of the coupling mechanism with the crankshaft on the main shaft of the transmission, The cam chain for the rear cylinder is arranged at an axial position that matches the drive member, which allows the axial dimension of the engine to be shortened and the rearward inclination angle of the rear cylinder to be increased, making the engine more stable. This has the effect of making it more compact.
第１図は本発明エンジンを搭載した自動２輪車
の側面図、第２図は第１図の―線截断面図、
第３図は第２図の−線截断面図、第４図は第
３図の―線截断面図である。
１……クランクケース、２……前側シリンダ、
３……後側シリンダ、４……クランクシヤフト、
５……カムチエーン、６……動弁カムシヤフト、
７……変速機、８……メインシヤフト、１０……
連結機構、１１……オイルポンプ、１２……駆動
部材。
Fig. 1 is a side view of a two-wheeled motor vehicle equipped with the engine of the present invention, Fig. 2 is a sectional view taken along the line - - of Fig.
3 is a cross-sectional view taken along the line -- in FIG. 2, and FIG. 4 is a cross-sectional view taken along the line -- in FIG. 1...Crankcase, 2...Front cylinder,
3...Rear cylinder, 4...Crankshaft,
5...Cam chain, 6...Valve train camshaft,
7...Transmission, 8...Main shaft, 10...
Connection mechanism, 11... Oil pump, 12... Drive member.
Claims (1)
Ｖ字状に配置すると共に、該各シリンダの頂部に
該クランクケース内のクランクシヤフトによりカ
ムチエーンを介して駆動される動弁カムシヤフト
を備えた頭上カム弁式のＶ型エンジンであつて、
該クランクケース内に、該クランクシヤフトの後
方に位置して変速機を収容し、該変速機のメイン
シヤフトに、その軸端に備える該クランクシヤフ
トとの連結機構の配置部内側に位置して該クラン
クケースの下部に備えるオイルポンプの駆動部材
を配置するものにおいて、後側のシリンダに備え
る該カムチエーンを該駆動部材に合致する軸方向
位置に配置したことを特徴とするＶ型エンジン。1. An overhead cam valve in which a pair of front and rear cylinders are arranged in a substantially V-shape on a crankcase, and a valve drive camshaft is provided at the top of each cylinder, which is driven by a crankshaft in the crankcase via a cam chain. It is a V-type engine of the formula,
A transmission is housed in the crankcase at a position behind the crankshaft, and a transmission is housed in the main shaft of the transmission at an inner side of an arrangement portion of a coupling mechanism with the crankshaft provided at the shaft end of the transmission. A V-type engine in which a drive member for an oil pump is disposed in the lower part of a crankcase, wherein the cam chain in a rear cylinder is disposed at an axial position that matches the drive member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18812082A JPS5979045A (en) | 1982-10-28 | 1982-10-28 | V type engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18812082A JPS5979045A (en) | 1982-10-28 | 1982-10-28 | V type engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5979045A JPS5979045A (en) | 1984-05-08 |
| JPS62338B2 true JPS62338B2 (en) | 1987-01-07 |
Family
ID=16218055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18812082A Granted JPS5979045A (en) | 1982-10-28 | 1982-10-28 | V type engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5979045A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60136546A (en) * | 1983-12-26 | 1985-07-20 | Yashima Chem Ind Co Ltd | Substituted phenylacetanilide derivative, its production and use thereof |
| KR100736962B1 (en) * | 2005-11-15 | 2007-07-09 | 현대자동차주식회사 | Engine oil supply |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3738338A (en) * | 1971-04-23 | 1973-06-12 | Amf Inc | Internal combustion engines |
| JPS5553798Y2 (en) * | 1977-11-01 | 1980-12-12 |
-
1982
- 1982-10-28 JP JP18812082A patent/JPS5979045A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5979045A (en) | 1984-05-08 |
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