JPH0329966B2 - - Google Patents
Info
- Publication number
- JPH0329966B2 JPH0329966B2 JP20560882A JP20560882A JPH0329966B2 JP H0329966 B2 JPH0329966 B2 JP H0329966B2 JP 20560882 A JP20560882 A JP 20560882A JP 20560882 A JP20560882 A JP 20560882A JP H0329966 B2 JPH0329966 B2 JP H0329966B2
- Authority
- JP
- Japan
- Prior art keywords
- transmission case
- oil
- engine
- case cover
- oil pan
- 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
- 230000005540 biological transmission Effects 0.000 claims description 41
- 239000003921 oil Substances 0.000 description 38
- 239000010705 motor oil Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
-
- 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
- F02B75/02—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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
【発明の詳細な説明】
本発明はスクータ形自動二輪車等に用いられる
動力伝達機構を一体に備えたエンジンユニツトに
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an engine unit integrally equipped with a power transmission mechanism used in scooter type motorcycles and the like.
この種のエンジンユニツトとして、４サイクル
エンジンのクランクケースの一側部に後方に向つ
て延びる伝動ケースを一体に延設し、この伝動ケ
ースの後端部に後輪を支持するとともに、伝動ケ
ース内にはエンジンの動力を後輪に伝えるＶベル
ト無段変速機を収容したものが知られている。 As this type of engine unit, a transmission case that extends rearward is integrally installed on one side of the crankcase of a 4-cycle engine, and the rear wheel is supported at the rear end of the transmission case, and the transmission case is There is a known model that houses a V-belt continuously variable transmission that transmits engine power to the rear wheels.
このようなエンジンユニツトにおいて、クラン
クケースの底部にエンジンオイルを貯留するオイ
ルパンを備えたものでは、エンジンオイルをオイ
ルパンに注入するための注入口を必要とする。こ
の場合、オイルの注入口は注入作業のことを考慮
すると車体側方に面したエンジンユニツトの側部
に位置することが好ましいものとなるが、この位
置に注入口を設けるとオイルパンはクランクケー
スの直下に位置するため、このオイルパンと注入
口とを結ぶオイル通路を設ける必要がある。しか
しながら、このオイル通路を格別なパイプ等で構
成すると部品点数が多くなり、コストや重量の増
大を招く等の不都合が生じる。 In such engine units, those equipped with an oil pan for storing engine oil at the bottom of the crankcase require an injection port for injecting engine oil into the oil pan. In this case, considering the injection work, it is preferable to locate the oil inlet on the side of the engine unit facing the side of the vehicle body. Since it is located directly below the oil pan, it is necessary to provide an oil passage connecting this oil pan and the inlet. However, if this oil passage is constituted by a special pipe or the like, the number of parts will increase, resulting in disadvantages such as an increase in cost and weight.
本発明はこのような事情にもとづいてなされた
もので、オイルの注入口を車体側方に面したエン
ジンユニツトの側部に設けるに当たり、部品点数
が増えることもなく、コストの低減を実現するこ
とができ、しかもこのエンジンユニツトのデツド
スペースを有効に活用できる自動二輪車等の車両
におけるエンジンユニツトの提供を目的とする。 The present invention has been made based on the above circumstances, and an object of the present invention is to realize cost reduction without increasing the number of parts when an oil inlet is provided on the side of the engine unit facing the side of the vehicle body. To provide an engine unit for a vehicle such as a motorcycle, which can effectively utilize the dead space of the engine unit.
すなわち、本発明は上記目的を達成するため、
伝動ケースの側方を覆う伝動ケースカバーに、一
端がオイルパンに連なるとともに、他端が伝動ケ
ースカバーの側面に開口されて注入口をなしたオ
イル通路を一体に設けたことを特徴とする。 That is, in order to achieve the above object, the present invention
The transmission case cover that covers the sides of the transmission case is characterized in that an oil passage whose one end is connected to the oil pan and whose other end is opened at the side surface of the transmission case cover to form an inlet is integrally provided.
以下本発明の一実施例を、スクータ形自動二輪
車に適用した図面にもとづいて説明する。 An embodiment of the present invention will be described below based on the drawings in which the present invention is applied to a scooter type motorcycle.
第１図中１は車体を構成するアンダーボーン形
のフレーム、２はフロントフオーク、３はレツグ
シールド、４はシート、５はシート４下の部分を
覆うカバーを夫々示す。上記フレーム１後部の立
ち上がり部６にはエンジンユニツト７の前端部が
枢支されており、このコンジンユニツト７の後端
部は緩衝器８によつて懸架されている。このエン
ジンユニツト７については第２図および第３図に
詳図されている。すなわち９は４サイクル単気筒
エンジンであり、クランクケース１０の上面にシ
リンダブロツク１１およびシリンダヘツド１２が
直立して設けられている。クランクケース１０は
右ケース１３と左ケース１４とを衝合してなる左
右分割形に構成されており、この底面の衝合部分
にはエンジンオイルを貯留するオイルパン１５が
下方に向つて膨り出して設けられている。そして
クランクケース１０内には軸受１６，１６を介し
てクランク軸１７が軸支されており、このクラン
ク軸１７はコネクテイングロツド１８を介してピ
ストン１９と連結されている。クランク軸１７の
右端部には発電機２０およびフアン２１が取着さ
れており、このフアン２１はシリンダブロツク１
１およびヘツド１２を覆うエアシユラウド２２内
に吸気口２３から吸引した外気を第３図中矢印で
示したように送風してエンジン９を強制空冷する
ようになつている。また左ケース１４には後方に
向つて延びる伝動ケース２４が一体に形成されて
おり、この伝動ケース２４の後端部には駆動輪と
しての後輪２５が支持されている。そして伝動ケ
ーース２４内には動力伝達機構を構成するＶベル
ト無段変速機２６が収容されている。この変速機
２６については詳図しないが、クランク軸１７の
左端部に固定したプライマリシーブ２７と後輪２
５の車軸に固定したセカンダリシーブ（図示せ
ず）との間にＶベルト２８を巻装して構成され、
クランク軸１７の回転速度に応じてプライマリシ
ーブ２７の溝幅を自動的に変化させてＶベルト２
８の巻掛け半径を変化させることにより、クラン
ク軸１７と車軸との間の変速比を無段階的に変化
させるようになつている。またこの伝動ケース２
４の側面開口部には鋳造製の伝動ケースカバー２
９がボルト締めされており、この伝動ケースカバ
ー２９は上記開口部を閉塞して伝動ケース２４内
に伝動室３０を構成している。伝動ケースカバー
２９は断面略コ字形に形成され、その下面壁３１
はオイルパン１５の底面よりも上方に位置してい
る。このためオイルパン１５の左側側面と伝動ケ
ースカバー２９の前端部下面とによつて囲まれた
部分には第３図に示すような空間３２が形成され
ている。伝動ケースカバー２９の下面壁３１の前
端部には下方に膨り出す膨出部３３が一体成形さ
れており、この膨出部３３は上記空間３２部分に
位置している。そして膨出部３３内にはオイル通
路３４が形成されている。このオイル通路３４は
左右方向に沿つて水平に形成されており、その一
端は上記オイルパン１５の側面壁に開設した連通
孔３５と対向され、かつ連通管３６を介して液密
に連通されている。またオイル通路３４の他端は
上方に向つて延長されて伝動ケースカバー２９の
外側面に開口されており、この開口はオイル注入
口３７を構成している。オイル注入口３７にはキ
ヤツプ３８がねじ込まれており、このキヤツプ３
８にはオイルのレベルゲージ３９が一体に設けら
れている。なお、図中Ｌはオイルパン１５内のオ
イルの液面レベルを示す。 In FIG. 1, reference numeral 1 indicates an underbone-shaped frame constituting the vehicle body, 2 indicates a front fork, 3 indicates a leg shield, 4 indicates a seat, and 5 indicates a cover covering a portion below the seat 4. The front end of an engine unit 7 is pivotally supported on the rising portion 6 at the rear of the frame 1, and the rear end of the engine unit 7 is suspended by a shock absorber 8. This engine unit 7 is shown in detail in FIGS. 2 and 3. That is, 9 is a four-stroke single-cylinder engine, and a cylinder block 11 and a cylinder head 12 are provided upright on the upper surface of a crankcase 10. The crankcase 10 has a left-right split structure with a right case 13 and a left case 14 abutting against each other, and an oil pan 15 for storing engine oil bulges downward at the abutting portion of the bottom surface. It is set out. A crankshaft 17 is rotatably supported within the crankcase 10 via bearings 16, 16, and this crankshaft 17 is connected to a piston 19 via a connecting rod 18. A generator 20 and a fan 21 are attached to the right end of the crankshaft 17, and this fan 21 is connected to the cylinder block 1.
The engine 9 is forcedly cooled by blowing outside air sucked in from the intake port 23 into an air shroud 22 that covers the engine 1 and the head 12 as indicated by the arrows in FIG. Further, a transmission case 24 extending rearward is integrally formed with the left case 14, and a rear wheel 25 as a driving wheel is supported at the rear end of the transmission case 24. A V-belt continuously variable transmission 26 constituting a power transmission mechanism is housed within the transmission case 24. Although this transmission 26 is not shown in detail, it includes a primary sheave 27 fixed to the left end of the crankshaft 17 and a rear wheel 2
A V-belt 28 is wound between the secondary sheave (not shown) fixed to the axle of 5,
The V-belt 2 automatically changes the groove width of the primary sheave 27 according to the rotational speed of the crankshaft 17.
By changing the winding radius of 8, the gear ratio between the crankshaft 17 and the axle can be changed steplessly. Also, this transmission case 2
There is a cast transmission case cover 2 in the side opening of 4.
9 is bolted, and this transmission case cover 29 closes the opening and forms a transmission chamber 30 within the transmission case 24. The transmission case cover 29 has a substantially U-shaped cross section, and its lower wall 31
is located above the bottom surface of the oil pan 15. Therefore, a space 32 as shown in FIG. 3 is formed in a portion surrounded by the left side surface of the oil pan 15 and the lower surface of the front end of the transmission case cover 29. A bulging portion 33 that bulges out downward is integrally molded on the front end of the lower wall 31 of the transmission case cover 29, and this bulging portion 33 is located in the space 32 portion. An oil passage 34 is formed within the bulge 33 . This oil passage 34 is formed horizontally along the left-right direction, and one end thereof faces a communication hole 35 formed in the side wall of the oil pan 15, and is fluid-tightly communicated with it via a communication pipe 36. There is. The other end of the oil passage 34 extends upward and opens at the outer surface of the transmission case cover 29, and this opening constitutes an oil inlet 37. A cap 38 is screwed into the oil inlet 37.
8 is integrally provided with an oil level gauge 39. Note that L in the figure indicates the liquid level of the oil in the oil pan 15.
このような構成によると、エンジンユニツト７
の側部にオイル注入口３７を設けるに当り、この
オイル注入口３７とクランクケース１０直下のオ
イルパン１５とを結ぶオイル通路３４を、伝動ケ
ース２４の左側面を覆う伝動ケースカバー２９に
一体に設けたので、オイル注入口３７がオイルパ
ン１５から離れているにも拘わらず、これら両者
を結ぶ格別なパイプやその配管等は不要となり、
部品点数の削減を図れる。またこの場合、伝動ケ
ースカバー２９の下面壁３１は下方に膨り出す
が、この下面壁３１はオイルパン１５の下面より
も上方に位置されているので、下面壁３１の膨出
部３３は丁度オイルパン１５の左側面と下面壁３
１とで囲まれた空間３２部分に位置されることに
なる。したがつて、エンジンユニツト７のデツド
スペースを有効に活用でき、最底地上高が減じら
れずに済む等の利点がある。 According to such a configuration, the engine unit 7
In providing the oil inlet 37 on the side of the transmission case 24, the oil passage 34 connecting the oil inlet 37 and the oil pan 15 directly below the crankcase 10 is integrated into the transmission case cover 29 that covers the left side of the transmission case 24. Because of this, even though the oil inlet 37 is located far from the oil pan 15, there is no need for a special pipe or piping to connect the two.
The number of parts can be reduced. In this case, the lower wall 31 of the transmission case cover 29 bulges downward, but since the lower wall 31 is located above the lower surface of the oil pan 15, the bulged portion 33 of the lower wall 31 is just Left side and bottom wall 3 of oil pan 15
It will be located in the space 32 surrounded by 1 and 1. Therefore, there are advantages such as the dead space of the engine unit 7 can be effectively utilized and the lowest ground clearance does not need to be reduced.
なお、上述した実施例では動力伝達機構をＶベ
ルト無段変速機としたが、本発明はこれに限らず
チエーン駆動式としても良く、その他シリンダの
配置、冷却方式も上記実施例に制約されない。 In the above embodiment, the power transmission mechanism is a V-belt continuously variable transmission, but the present invention is not limited to this, and a chain drive type may be used, and the arrangement of the cylinders and the cooling method are not limited to the above embodiments.
また本発明に係る車両は自動二輪車に特定され
るものではなく、自動三輪車でも同様に実施でき
る。 Further, the vehicle according to the present invention is not limited to a motorcycle, but can be applied to a tricycle as well.
以上詳述したように本発明によれば、車体側方
に面した伝動ケースカバーに、一端がオイルパン
に連なるとともに、他端がこの伝動ケースカバー
の側面に開口されてオイル注入口をなしたオイル
通路を一体に設けたので、オイル注入口が車体の
側方に面しているにも拘わらず格別なオイルパイ
プやその配管構成等は不要となり、このため部品
点数やコストの低減を実現できる。しかも伝動ケ
ースカバーはエンジンユニツトの側部に位置する
から、このケースカバー回りのスペースを有効に
活用できる等の利点がある。 As detailed above, according to the present invention, one end of the transmission case cover facing the side of the vehicle body is connected to the oil pan, and the other end is opened at the side of the transmission case cover to form an oil inlet. Since the oil passage is integrated, there is no need for a special oil pipe or its piping configuration even though the oil inlet faces the side of the vehicle body, which reduces the number of parts and costs. . Furthermore, since the transmission case cover is located on the side of the engine unit, there is an advantage that the space around the case cover can be used effectively.
図面は本発明の一実施例を示し、第１図は自動
二輪車の側面図、第２図はエンジンユニツトの側
面図、第３図は第２図中−線に沿う断面図で
ある。
１……車体（フレーム）、７……エンジンユニ
ツト、９……エンジン、１０……クランクケー
ス、１５……オイルパン、２４……伝動ケース、
２６……動力伝達機構（Ｖベルト無段変速機）、
２９……伝動ケースカバー、３４……オイル通
路、３７……オイル注入口。
The drawings show one embodiment of the present invention; FIG. 1 is a side view of a motorcycle, FIG. 2 is a side view of an engine unit, and FIG. 3 is a sectional view taken along the line - in FIG. 1... Vehicle body (frame), 7... Engine unit, 9... Engine, 10... Crank case, 15... Oil pan, 24... Transmission case,
26...Power transmission mechanism (V-belt continuously variable transmission),
29...Transmission case cover, 34...Oil passage, 37...Oil inlet.
Claims (1)
を形成するとともに、このクランクケースの一側
部にエンジンの動力を駆動輪に伝える動力伝達機
構を収容した伝動ケースを一体に構成し、この伝
動ケースの側面を伝動ケースカバーで覆つた自動
二輪車等の車両において、上記伝動ケースカバー
に一端がオイルパンに連なるとともに、他端が車
体側方に面した伝動ケースカバーの側面に開口さ
れてオイル注入口をなしたオイル通路を一体に形
成したことを特徴とする自動二輪車等の車両にお
けるエンジンユニツト。1. An oil pan is formed at the bottom of the engine crankcase, and a transmission case that houses a power transmission mechanism that transmits engine power to the drive wheels is integrally formed on one side of the crankcase. In a vehicle such as a motorcycle covered with a transmission case cover, one end of the transmission case cover is connected to an oil pan, and the other end is opened on the side of the transmission case cover facing the side of the vehicle body to form an oil inlet. An engine unit for a vehicle such as a motorcycle, characterized in that an oil passage is integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20560882A JPS5996414A (en) | 1982-11-24 | 1982-11-24 | Engine unit in vehicle such as motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20560882A JPS5996414A (en) | 1982-11-24 | 1982-11-24 | Engine unit in vehicle such as motorcycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5996414A JPS5996414A (en) | 1984-06-02 |
| JPH0329966B2 true JPH0329966B2 (en) | 1991-04-25 |
Family
ID=16509681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20560882A Granted JPS5996414A (en) | 1982-11-24 | 1982-11-24 | Engine unit in vehicle such as motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5996414A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2112306A2 (en) | 2008-04-23 | 2009-10-28 | Mitsui Mining and Smelting Co., Ltd | Vehicle door latch apparatus |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4605929B2 (en) * | 2001-03-29 | 2011-01-05 | 本田技研工業株式会社 | Internal combustion engine for motorcycles |
| EP1498592B1 (en) * | 2002-04-08 | 2012-06-06 | Yamaha Hatsudoki Kabushiki Kaisha | Engine |
| KR100514892B1 (en) * | 2003-11-11 | 2005-09-14 | 현대자동차주식회사 | cover for joint part between an engine and a transmission |
| US7096846B1 (en) | 2005-07-01 | 2006-08-29 | Harley-Davidson Motor Company Group, Inc. | Engine and transmission case assembly |
| JP4732409B2 (en) * | 2007-09-05 | 2011-07-27 | 本田技研工業株式会社 | Oil level confirmation structure for motorcycles |
| JP5301184B2 (en) * | 2008-03-25 | 2013-09-25 | 本田技研工業株式会社 | Power unit |
| EP2309152B1 (en) * | 2008-08-08 | 2012-06-20 | Yamaha Hatsudoki Kabushiki Kaisha | Two-wheeled motor vehicle |
| JP4748272B1 (en) * | 2010-03-01 | 2011-08-17 | スズキ株式会社 | Motorcycle crankcase structure |
| JP6953492B2 (en) * | 2019-10-15 | 2021-10-27 | 本田技研工業株式会社 | Internal combustion engine for saddle-mounted vehicles |
-
1982
- 1982-11-24 JP JP20560882A patent/JPS5996414A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2112306A2 (en) | 2008-04-23 | 2009-10-28 | Mitsui Mining and Smelting Co., Ltd | Vehicle door latch apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5996414A (en) | 1984-06-02 |
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