JPS6023697A - Bearing structure of l-shaped multicylinder engine - Google Patents
Bearing structure of l-shaped multicylinder engineInfo
- Publication number
- JPS6023697A JPS6023697A JP13173883A JP13173883A JPS6023697A JP S6023697 A JPS6023697 A JP S6023697A JP 13173883 A JP13173883 A JP 13173883A JP 13173883 A JP13173883 A JP 13173883A JP S6023697 A JPS6023697 A JP S6023697A
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- crankcase
- line
- cylinder
- bearing structure
- 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
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
- F02B75/22—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
- 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
- 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)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Sliding-Contact Bearings (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
この発明は、自動二輪車等の車両に搭載されたＬ型多気
筒エンジンにおける軸受構造に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bearing structure in an L-type multi-cylinder engine mounted on a vehicle such as a motorcycle.
／
従来１例えば自動二輪車のＬ型多気筒エンジンは次のよ
うに構成される場合がある。即ち、クランクケースから
車両前方と上方にそれぞれ気筒が突設され、これら気筒
のピストンに連動されるクランク軸はすべり軸受を介し
て上記クランクケースに支承されている。この軸受は１
〕下に分割１１能とされ、また、分解、組立の容易性の
面でクランクケースも上記すべり軸受を通る水平な割線
で」−ドに分；ＩＨＩＩｏｆ能とされている。/ Conventional 1 For example, an L-type multi-cylinder engine for a motorcycle may be configured as follows. That is, cylinders are provided to protrude from the crankcase toward the front and above of the vehicle, respectively, and the crankshaft, which is interlocked with the pistons of these cylinders, is supported by the crankcase via a sliding bearing. This bearing is 1
] In order to facilitate disassembly and assembly, the crankcase is also divided into 11 parts along a horizontal dividing line passing through the sliding bearing.
ところで」二記構成では、従来より軸受とクランクケー
スの分割面は同一水平面上に形成されており、従って、
この場合、前方に突出した気筒の中心線上に軸受の分割
部が位置することとなって、この気筒での爆発圧力の最
大負荷は軸受の分割部で受承されることとなる。この結
果、軸受に適正な油膜を形成することが出来なくなり、
この軸受及びクランク軸のジャーナル部が損傷するとい
う不具合が生ずる。By the way, in the structure mentioned above, the dividing planes of the bearing and the crankcase are conventionally formed on the same horizontal plane, and therefore,
In this case, the divided portion of the bearing will be located on the center line of the cylinder that protrudes forward, and the maximum load of the explosion pressure in this cylinder will be received by the divided portion of the bearing. As a result, it becomes impossible to form an appropriate oil film on the bearing.
A problem arises in that the bearing and the journal portion of the crankshaft are damaged.
この発明は、上記のような！１９情に注［１してなされ
たもので、Ｌ型多気筒エンジンにおいて、クランクケー
スの分解、組立等を容易になし得る状態としたままで、
クランク軸と軸受間の適正油１１りを確保し、軸受部の
損傷を防止することを目的とする。This invention is like the above! 19 Note [1] This was done with the L-type multi-cylinder engine in a state where the crankcase can be easily disassembled and assembled, etc.
The purpose is to ensure proper oil flow between the crankshaft and the bearings and to prevent damage to the bearings.
上記目的を達成するためのこの発明の特徴とするところ
は、クランクケースがクランクに輔用のすべり軸受を通
るほぼ水平な割線で」−下に分割可能とされた車両のＬ
型多気筒エンジンにおいて、上記ずベリ軸受の分割１ｎ
ｉが、前、後２筒の中心線の側面視交角を三等分する線
にほぼ直角な面上に形成された点である。A feature of the present invention for achieving the above object is that the crankcase can be divided downwardly by a substantially horizontal dividing line passing through a sliding bearing for supporting the crank.
In a type multi-cylinder engine, the division 1n of the above-mentioned Zubeli bearing
i is a point formed on a plane that is substantially perpendicular to a line that trisects the intersection angle in side view of the center lines of the front and rear two cylinders.
以下、この発明の実施例を図に従い説明する。Embodiments of the present invention will be described below with reference to the drawings.
車両の一例たる自動二輪車ｌは車体フレーム２に支持さ
れるＬ型多気筒エンジン３を有している。また、車体フ
レーム２前部にはフロントフォーク４を介して前輪６が
支持Ｓれ、同後部にはりャーアーム７を介して後輪８が
支持されている。そして、この後輪８はエンジン３によ
り駆動される。A motorcycle 1, which is an example of a vehicle, has an L-type multi-cylinder engine 3 supported by a body frame 2. Further, a front wheel 6 is supported at the front part of the vehicle body frame 2 via a front fork 4, and a rear wheel 8 is supported at the rear part thereof via a flyer arm 7. This rear wheel 8 is driven by the engine 3.
」１記エンジン３について説明すると、クランクケース
９から車両前方に前気筒１１が、」１方に後気筒１２が
それぞれ突設され、これら気筒１１゜１２はそれぞれソ
リンタ部１３と、このシリンタ部１３に挿入される図示
しないピストンを有している。上記クランクケース９に
クランク軸１４両端が環状のすべり軸受１６を介して支
承され、クランク軸１４は上記各ピストンに図示しない
コネクチングロッドを介して連動連結される。また、ク
ランクケース９にはクランク軸１４と同一平面上で平行
に変速軸１７と出力軸１８が軸架され、これら軸は変速
歯車１９にて連動連結され、出力軸１８と前記後輪８と
はチェーン伝達装置２１で連結されている。1. To explain the engine 3, a front cylinder 11 and a rear cylinder 12 project from the crankcase 9 toward the front of the vehicle, respectively. It has a piston (not shown) that is inserted into. Both ends of a crankshaft 14 are supported by the crankcase 9 via annular sliding bearings 16, and the crankshaft 14 is interlocked and connected to each of the pistons via connecting rods (not shown). Further, a transmission shaft 17 and an output shaft 18 are mounted on the crankcase 9 in parallel with the crankshaft 14 on the same plane, and these shafts are interlocked and connected by a transmission gear 19, and the output shaft 18 and the rear wheel 8 are connected to each other by a transmission gear 19. are connected by a chain transmission device 21.
ＩＬ記ツクランクケース９すへり軸受１６．変速１１１
１１１７および出力軸１８の各軸心を通るほぼ水１１な
；ζ１線２２で上下に分割可能とされ、この分割によっ
て、クランクケース９に対するずへり軸受１６、変速軸
１７および出力軸１８の説着かり能とされる。IL: Crank case 9 Edge bearing 16. Shift 111
1117 and the output shaft 18; the water 11 can be divided vertically along the ζ1 line 22, and by this division, the shear bearing 16, the transmission shaft 17, and the output shaft 18 are attached to the crankcase 9. It is considered to be Karinō.
上記すべり軸受１６は径方向に二分割可能とされ、この
分割面２３は、前、後気筒１１．１２の中心線２４．２
４の側面視における交角θを三等分する線２６にほぼ直
角な而２７Ｊｌこ形成される。このすへり軸受１６の各
分割された部材１走それぞれ軸受ハウジング２８と、こ
の軸受ハウジング２８内に設けられるライニング２９と
を４１し、ポルト３１とノックピン３２で相互（と固着
される。また、すべり軸受１６のクランクケース９に対
する回り止めは他の７・ンクピン３３でなされる。The sliding bearing 16 can be divided into two in the radial direction, and this dividing surface 23 is located at the center line 24.2 of the front and rear cylinders 11.12.
The line 27 is approximately perpendicular to the line 26 that divides the intersection angle θ in side view of 4 into three equal parts. The bearing housing 28 and the lining 29 provided inside the bearing housing 28 are fixed to each other (and fixed to each other) by the port 31 and the dowel pin 32. Rotation of the bearing 16 with respect to the crankcase 9 is prevented by another 7-inch pin 33.
なお、複数個あるすべり軸受の全てに木刀式を使用して
も良いし、例えば中央部だけと力）ｌ／Ｘツだ様に部分
的に使用してもよい。Incidentally, the wooden sword type may be used for all of the plurality of sliding bearings, or may be used partially, for example, only at the center and at the (force)l/X.
この発明によれば、クランクケースがすべり＋１１受を
通るほぼ水平な割線で１−ド分割ＩＩ丁能とされている
ため、クランクケースの分解１組立や、ｔべり軸受の脱
７１′は容易である。そして、この構成において、ずベ
リ軸受の分割面が前、後気筒の中・６線の側面視交角を
三等分する線にほぼ直角な而１；に形成されたため、上
記のようにクランクケースの分解等が容易な構成であり
ながら、各気筒での爆発圧力の最大負荷がすべり軸受の
分割部を回避した位置で受承されるのであり、従って、
クランク軸とすへり軸受との間に適正な＃＋ｂ ＩＩＲ
力くノ形成されてこれらクランク軸やすべり軸受の４員
傷力く抑ル１される。According to this invention, since the crankcase is divided into two parts by a substantially horizontal dividing line passing through the sliding bearing, it is easy to disassemble and assemble the crankcase, and to remove the T sliding bearing (71'). be. In this configuration, the dividing surface of the skid bearing is approximately perpendicular to the line that trisects the middle and sixth lines of the front and rear cylinders when viewed from the side, so that the crankcase Although the configuration is easy to disassemble, the maximum load of explosion pressure in each cylinder is received at a position that avoids the divided part of the sliding bearing.
Proper #+b IIR between the crankshaft and edge bearing
The four members of the crankshaft and sliding bearings are formed with force and the damage force is suppressed.
図はこの発明の実施例を示し、第１図ｔま全体（Ｉ１１
面簡略図、第２図は第１図の部分拡大断面図、第３図は
第２図の■−ｍ線矢視図である。
ｌ・・自動二輪車（車両）、３・・エンジン、１１・・
前気筒、１２・・後気筒、１４・・クランクｄＭ＋、１
６・Φすへり軸受、２２０拳割線、２３・Ｑ分割面、２
４・・［１１，６線、２６・拳線、２７・・ｉｒ＋ｉ
。The figures show an embodiment of the present invention, and the entire figure 1 to t (I11
FIG. 2 is a partially enlarged sectional view of FIG. 1, and FIG. 3 is a view taken along the -m line in FIG. 2. l...Motorcycle (vehicle), 3...engine, 11...
Front cylinder, 12... Rear cylinder, 14... Crank dM+, 1
6・Φ edge bearing, 220 split line, 23・Q split surface, 2
4...[11,6 line, 26-fist line, 27...ir+i
.
Claims (1)
気筒がそれぞれ突設されると共に、これら気筒に連動さ
れるクランク軸が径方向に二分割可能なすべり軸受を介
して上記クランクケースに支承され、このクランクケー
スが上記すべり軸受を通るほぼ水平な割線で上下に分割
可能とされた車両（７） Ｌ型多気筒エンジンにおいて
、−ヒ記すべり軸受の分割面が、前、後気筒の中心線の
側面視交角を二等分する線にほぼ直角な面上に形成され
たことを特徴とするＬ型多気筒エンジンの軸受構造。■A front cylinder projects from the front of the vehicle and a rear cylinder projects upward from the crankcase, and the crankshaft linked to these cylinders is supported by the above-mentioned crankcase via a sliding bearing that can be divided into two in the radial direction. (7) In an L-type multi-cylinder engine, the dividing plane of the sliding bearing is located at the center of the front and rear cylinders. A bearing structure for an L-type multi-cylinder engine, characterized in that it is formed on a surface substantially perpendicular to a line that bisects the intersection angle of the line in side view.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13173883A JPS6023697A (en) | 1983-07-18 | 1983-07-18 | Bearing structure of l-shaped multicylinder engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13173883A JPS6023697A (en) | 1983-07-18 | 1983-07-18 | Bearing structure of l-shaped multicylinder engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6023697A true JPS6023697A (en) | 1985-02-06 |
| JPH0531039B2 JPH0531039B2 (en) | 1993-05-11 |
Family
ID=15065033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13173883A Granted JPS6023697A (en) | 1983-07-18 | 1983-07-18 | Bearing structure of l-shaped multicylinder engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6023697A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02159411A (en) * | 1988-12-13 | 1990-06-19 | Toshiba Eng Co Ltd | Journal bearing for horizontal shaft divided into two pieces |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6868810B2 (en) | 2002-02-06 | 2005-03-22 | Honda Giken Kogyo Kabushiki Kaisha | Bearing device |
-
1983
- 1983-07-18 JP JP13173883A patent/JPS6023697A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02159411A (en) * | 1988-12-13 | 1990-06-19 | Toshiba Eng Co Ltd | Journal bearing for horizontal shaft divided into two pieces |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0531039B2 (en) | 1993-05-11 |
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