JPH02119610A - Exhaust gas device for motorcycle - Google Patents
Exhaust gas device for motorcycleInfo
- Publication number
- JPH02119610A JPH02119610A JP22759089A JP22759089A JPH02119610A JP H02119610 A JPH02119610 A JP H02119610A JP 22759089 A JP22759089 A JP 22759089A JP 22759089 A JP22759089 A JP 22759089A JP H02119610 A JPH02119610 A JP H02119610A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust
- oil pan
- engine
- crankcase
- 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035939 shock Effects 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
- 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
- F02B2075/1816—Number of cylinders four
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
この発明は多気筒エンジンを備えた自動２輪車の排気装
置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to an exhaust system for a motorcycle equipped with a multi-cylinder engine.
［従来の技術］
多気筒エンジンを備えた自動２輪車において、シリンダ
からの複数の排気管をエンジンの前方から下方に導きク
ランクケースの下部で集合させた後、後方の消音管に接
続するものがある。[Prior Art] In a motorcycle equipped with a multi-cylinder engine, a plurality of exhaust pipes from the cylinders are guided downward from the front of the engine, collected at the bottom of the crankcase, and then connected to a muffler pipe at the rear. There is.
［発明が解決しようとする課題］
ところで、前記公知の多気筒エンジンにおいて、前記排
気管の集合部がクランクケース下部のオイルパンの下を
通るため、排気管の集合部と路面との間隔が狭くなって
自動２輪車の運行に支障を来す虞がある。そこで、この
弊害をなくするためには、エンジンの設置位置を高くす
るか、オイルパンの深さを浅くする必要がある。ところ
が、エンジンの設置位置を高くすると自動２輪車の安定
性が悪くなり、またオイルパンの深さを浅くするとオイ
ルパン自身の機能を充分に果たし得ない、という問題点
がある。また、排気管の集合部がクランクケース下部の
オイルパンの下を通るためオイルパンの前方及び底部が
排気管で塞がれて、走行中のオイルパンの冷却効率が低
下する、という問題点も有る。[Problems to be Solved by the Invention] Incidentally, in the known multi-cylinder engine, since the collecting part of the exhaust pipes passes under the oil pan at the bottom of the crankcase, the distance between the collecting part of the exhaust pipes and the road surface is narrow. There is a risk that this may hinder the operation of motorcycles. Therefore, in order to eliminate this problem, it is necessary to install the engine higher or to reduce the depth of the oil pan. However, there are problems in that if the engine is installed higher, the stability of the two-wheeled motor vehicle deteriorates, and if the depth of the oil pan is reduced, the oil pan itself cannot perform its functions satisfactorily. Additionally, because the exhaust pipe assembly passes under the oil pan at the bottom of the crankcase, the front and bottom of the oil pan are blocked by the exhaust pipe, reducing the cooling efficiency of the oil pan while driving. Yes.
この発明は、従来技術の有するこのような問題点に鑑み
てなされたものであり、その目的とするところは、エン
ジン設置位置を低く、オイルパンの深さを充分に確保し
、且つオイルパンの冷却効率を損なわないようにした自
動２輪車の排気装置を提供しようとするものである。This invention was made in view of the problems of the prior art, and its purpose is to install the engine at a low position, ensure a sufficient depth of the oil pan, and The present invention aims to provide an exhaust system for a motorcycle that does not impair cooling efficiency.
［課題を解決するための手段］
上記目的を達成するために、この発明における自動２輪
車の排気装置は、
クランクケース上のシリンダからの複数の排気管をエン
ジンの前方から下方に導き、前記クランクケース下部の
オイルパン膨出部の側部において前記複数の排気管を集
合させた、
ものである。[Means for Solving the Problem] In order to achieve the above object, the exhaust system for a motorcycle according to the present invention guides a plurality of exhaust pipes from the cylinder on the crankcase downward from the front of the engine, and The plurality of exhaust pipes are assembled at the side of the oil pan bulge in the lower part of the crankcase.
［作用コ
複数の排気管をエンジンの前方から下方に導き、クラン
クケース下部のオイルパン膨出部の側部において前記複
数の排気管を集合させたので、オイルパンは該排気管に
関係なく所望の深さの膨出部を形成して設置でき、また
該オイルパンの前方及び底部には排気管が存在しないの
で、走行中のオイルパンの冷却効率が損なわれることが
ない。[Effects] A plurality of exhaust pipes are guided downward from the front of the engine, and the plurality of exhaust pipes are gathered at the side of the oil pan bulge at the bottom of the crankcase, so the oil pan can be installed as desired regardless of the exhaust pipes. Since there is no exhaust pipe at the front or bottom of the oil pan, the cooling efficiency of the oil pan during driving is not impaired.
［実施例］ この発明の実施例を以下図面を参照して説明する。[Example] Embodiments of the invention will be described below with reference to the drawings.
第１図は自動２輪車を示し、１はフレーム、２はフロン
トフォーク、３は操向輪、４は燃↑４タンク、５はソー
トである。面記フレーム１はヘットバイブロ、左右１対
のダウンチューブ７．７、メインパイプ８．８及びバッ
クステー９，９（共に一方のみを図示）を主構成として
形成してあり、全体としてダブルクレードル形をなして
いる。そしてメインバイブ８，８の下端部にはブラケッ
ト１０．１０（一方のみを図示）が取着されており、こ
れらブラケッ）１０．１０間には駆動軸１１を軸支した
リヤアーム１２の前端部が枢支されている。またフレー
ムｌには水冷式４サイクル４気筒エンジン１３が懸垂支
持されている。このエンジン１３はクランクケース１４
上に前部シリンダ１５と後部シリンダ１６とを車体の前
後方向に所定の挟角を存して立設したもので、前部シリ
ンダ１５と後部シリンダ１６とは側方から見て■字形に
配置されている。そして前部シリンダ１５及び後部シリ
ンダ１６は、内部に左右１対のシリンダを備えたシリン
ダブロック１８ａ、１９ａと、このシリンダブロック１
８ａ、１９ａに被冠されたシリンダヘット部ｘｓｂ、ｘ
９ｂとから構成され、これらシリンダヘッド部１８ｂ、
１９ｂの対向面には夫々１対の吸気接続口２０．２０及
び２１゜２１（一方のみを図示）が設けられている。ま
たエンジン１３と燃料タンク４との間にはエアクリーナ
２２、エアフロメータ２３及び吸気チャンバ２４が配置
されている。吸気チャンバ２４の下面からは前記吸気接
続口２０．２０及び２１．２１に連なる４本の吸気管２
５・・・が導出されており、各吸気管２５・・・には詳
図しないが夫々燃料噴射弁が取着されている。燃料噴射
弁は吸％流量に応した燃料を吸気管２５・・・内に噴射
するようになっており、このため本実施例のエンジン１
３は燃料供給手段として燃料噴射方式を採用している。Figure 1 shows a two-wheeled motor vehicle, where 1 is a frame, 2 is a front fork, 3 is a steering wheel, 4 is a fuel tank, and 5 is a sort. The frame 1 is mainly composed of a head vibro, a pair of left and right down tubes 7.7, a main pipe 8.8, and backstays 9, 9 (only one of which is shown), and has a double cradle shape as a whole. is doing. Brackets 10.10 (only one is shown) are attached to the lower ends of the main vibrators 8, 8, and between these brackets 10.10, the front end of the rear arm 12, which pivotally supports the drive shaft 11, is attached. It is pivotally supported. Further, a water-cooled four-stroke four-cylinder engine 13 is suspended and supported on the frame l. This engine 13 has a crank case 14
A front cylinder 15 and a rear cylinder 16 are erected on the top with a predetermined included angle in the longitudinal direction of the vehicle body, and the front cylinder 15 and rear cylinder 16 are arranged in a ■ shape when viewed from the side. has been done. The front cylinder 15 and the rear cylinder 16 are comprised of cylinder blocks 18a and 19a each having a pair of left and right cylinders inside, and the cylinder block 1.
Cylinder head portions xsb and x covered by 8a and 19a
9b, these cylinder head parts 18b,
A pair of intake ports 20, 20 and 21.degree. 21 (only one of which is shown) are provided on the opposing surfaces of 19b, respectively. Further, an air cleaner 22, an air flow meter 23, and an intake chamber 24 are arranged between the engine 13 and the fuel tank 4. From the bottom surface of the intake chamber 24, four intake pipes 2 are connected to the intake connection ports 20.20 and 21.21.
5... are led out, and a fuel injection valve is attached to each intake pipe 25, although not shown in detail. The fuel injection valve is configured to inject fuel into the intake pipe 25 according to the intake percentage flow rate, and for this reason, the engine 1 of this embodiment
3 employs a fuel injection method as a fuel supply means.
一方、前部シリンダ１５のシリンダヘッド部１８ｂの前
面及び後部シリンダ１６のシリンダヘッド部１９ｂの後
面には、夫々１対の排気口２６゜２６及び２７．２７が
設けられており、したがって前部シリンダ１５は前方排
気、後部シリンダ１６は後方排気となっている。On the other hand, a pair of exhaust ports 26, 26 and 27, 27 are provided on the front surface of the cylinder head section 18b of the front cylinder 15 and the rear surface of the cylinder head section 19b of the rear cylinder 16, respectively. 15 is a front exhaust, and a rear cylinder 16 is a rear exhaust.
そして、前部シリンダ１５の排気口２６．２６には、前
部排気管２８ａ、２８ｂが接続されている。これら前部
排気管２８ａ、２８ｂは排気口２６．２６から導出され
た後、エンジン１３の前方を下方に向って導かれてい″
るが、進行方向右側の排気管２８ａは左側の排気管２Ｂ
ｂ側に向うように曲成されてクランクケース１４の前方
を斜めに横切っている。そして前部排気管２８ａ、２８
ｂの下端部はクランクケース１４の一側において上下に
並置され、クランクケース１４の前端部下面に膨出した
オイルパン２９の側方に引き回されている。またこれら
前部排気管２８ａ、２８ｂの下端部はここから後方に向
って導出されており、この導出端部はクランク軸１７の
下方に位置されている。Front exhaust pipes 28a and 28b are connected to the exhaust ports 26.26 of the front cylinder 15. These front exhaust pipes 28a and 28b are led out from the exhaust ports 26 and 26, and then guided downward in front of the engine 13.
However, the exhaust pipe 28a on the right side in the direction of travel is the exhaust pipe 2B on the left side.
It is curved toward the b side and diagonally crosses the front of the crankcase 14. and front exhaust pipes 28a, 28
The lower end portions of b are vertically juxtaposed on one side of the crankcase 14 and routed to the side of an oil pan 29 that bulges out on the lower surface of the front end of the crankcase 14 . Further, the lower end portions of these front exhaust pipes 28a, 28b are led out from here toward the rear, and this lead-out end portion is located below the crankshaft 17.
一方、後部シリンダ１６の排気口２７．２７には後部排
気管３２ａ、３２ｂが接続されている。On the other hand, rear exhaust pipes 32a and 32b are connected to the exhaust ports 27.27 of the rear cylinder 16.
これら後部排気管３２ａ、３２ｂは排気口２７゜２７か
ら導出された後、クランクケース１４の後面とリヤアー
ム１２との間を下方に向って導びかれているが、進行方
向左側の後部排気管３２ａは右側の後部排気管３２ｂ側
に向うように曲成されてクランクケース１４の後方を斜
めに横切っており、このため後部排気管３２ａ、３２ｂ
の下端部はクランクケース１４の右側において前後に並
置されている。そして後部排気管３２ａ、３２ｂの下端
部は前方に向って引き回されており、この導出端部はク
ランク軸１７の下方にまで導かれている。These rear exhaust pipes 32a, 32b are led out from the exhaust ports 27.degree. 27 and then guided downward between the rear surface of the crankcase 14 and the rear arm 12. is curved toward the right rear exhaust pipe 32b and diagonally crosses the rear of the crankcase 14, so that the rear exhaust pipes 32a, 32b
The lower end portions of the crank case 14 are juxtaposed front and back on the right side of the crankcase 14. The lower end portions of the rear exhaust pipes 32a, 32b are routed forward, and the lead-out end portions are guided below the crankshaft 17.
また、クランクケース１４の下方には、オイルパン２９
の後方に位置してｎ［気チャンバ３０が配置されている
。排気チャンバ３０はその前端両側部に前方に向って延
びる延出部３１ａ、３１ｂを一体に備え、これら延出部
３１ａ、３１ｂはオイルパン２９の両側に位置されてい
る。そして前記前部排気管２８ａ、２８ｂは、クランク
軸１７の下方でオイルパン２９の側方において集合管継
手３３を介して１本に集合されているとともに、さらに
この集合部の後方において前記排気チャンバ３０の一方
の延出部３１ａの前端面に接続されている。一方、同し
く後部排気管３２ａ、３２ｂにあってもクランク軸１７
の下方において集合管継手３４を介して１本に集合され
ており、この集合部は排気チャンバ３０の他方の延出部
３１ｂの前端上面に接続されている。Further, an oil pan 29 is located below the crankcase 14.
An air chamber 30 is located behind the n air chamber 30. The exhaust chamber 30 is integrally provided with extending portions 31 a and 31 b extending forward on both sides of its front end, and these extending portions 31 a and 31 b are located on both sides of the oil pan 29 . The front exhaust pipes 28a, 28b are combined into one pipe below the crankshaft 17 and on the side of the oil pan 29 via a collecting pipe joint 33, and further behind this collecting part, the exhaust pipes 28a and 28b are connected to the exhaust chamber. 30 is connected to the front end surface of one of the extending portions 31a. On the other hand, the crankshaft 17 also exists in the rear exhaust pipes 32a and 32b.
They are collected into one pipe below through a collecting pipe joint 34, and this collecting part is connected to the upper surface of the front end of the other extending part 31b of the exhaust chamber 30.
なお、排気チャンバ３０の後端両側部には左右１対の消
音管３５．３５ （一方のみを図示）が連結されている
。また第１図中符号３６はダウンチューブ７．７に取着
されたラジエタ、３７はリヤアーム１２を懸架する緩衝
器を示す。A pair of left and right muffling pipes 35, 35 (only one of which is shown) is connected to both sides of the rear end of the exhaust chamber 30. Further, in FIG. 1, reference numeral 36 indicates a radiator attached to the down tube 7.7, and 37 indicates a shock absorber for suspending the rear arm 12.
［発明の効果］
この発明では、クランクケース上のシリンダからの複数
の排気管をエンジンの前方から下方に導き、前記クラン
クケース下部のオイルパン膨出部の側部において前記複
数の排気管を集合させたので、前記排気管の集合部がク
ランクケース下部のオイルパンの下を通ることがなく、
排気管の集合部と路面との間隔が充分に確保されて自動
２輪車の運行に支障を来す虞がない。そして、オイルパ
ンの下にも何ら邪魔するものがないため、エンジンの設
置位置を高くするとか、オイルパンの深さを浅くする必
要が全くないので、自動２輪車の安定性が良くなり、ま
たオイルパン自身の機能も充分に果たし得る。ざらに、
オイルパンの前方及び底部が排気管で塞がれることがな
いので、走行中のオイルパンの冷却効率が損なわれるこ
ともない。[Effects of the Invention] In the present invention, a plurality of exhaust pipes from the cylinders on the crankcase are guided downward from the front of the engine, and the plurality of exhaust pipes are assembled at the side of the oil pan bulge in the lower part of the crankcase. This prevents the collecting part of the exhaust pipe from passing under the oil pan at the bottom of the crankcase.
A sufficient distance is ensured between the collecting part of the exhaust pipe and the road surface, so that there is no risk of interfering with the operation of the two-wheeled motor vehicle. Furthermore, since there is no obstruction under the oil pan, there is no need to raise the engine installation position or reduce the depth of the oil pan, improving the stability of the motorcycle. Moreover, the oil pan itself can fully perform its functions. Roughly,
Since the front and bottom portions of the oil pan are not blocked by the exhaust pipe, the cooling efficiency of the oil pan during driving is not impaired.
図面はこの発明の一実施例を示し、第１図は自動２輪車
の側面図、第２図はエンジンの正面図、第３図はエンジ
ンの背面図、第４図は同じくエンジンの底面図である。
１３・・・エンジン、１４・・・クランクケース、１５
・・・シリンダ、２８ａ、２８ｂ・・・排気管、２９・
・・オイルパン、３３・・・集合管継手。
第２図
特許出願人 ヤマハ発動機株式会社
代理人 弁理士 画材 幹男
３ｏ どソ
第
図
第
図The drawings show one embodiment of the present invention, in which Fig. 1 is a side view of the motorcycle, Fig. 2 is a front view of the engine, Fig. 3 is a rear view of the engine, and Fig. 4 is a bottom view of the engine. It is. 13...Engine, 14...Crankcase, 15
...Cylinder, 28a, 28b...Exhaust pipe, 29.
... Oil pan, 33... Collection pipe joint. Figure 2 Patent applicant Yamaha Motor Co., Ltd. agent Patent attorney Art supplies Mikio 3o Doso diagram Figure
Claims (1)
ジンの前方から下方に導き、前記クランクケース下部の
オイルパン膨出部の側部において前記複数の排気管を集
合させたことを特徴とする自動２輪車の排気装置。2. An automatic vehicle characterized in that a plurality of exhaust pipes from cylinders on the crankcase are guided downward from the front of the engine, and the plurality of exhaust pipes are gathered at a side of an oil pan bulge in the lower part of the crankcase. Exhaust system for wheeled vehicles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22759089A JPH02119610A (en) | 1989-09-04 | 1989-09-04 | Exhaust gas device for motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22759089A JPH02119610A (en) | 1989-09-04 | 1989-09-04 | Exhaust gas device for motorcycle |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4063482A Division JPS58158311A (en) | 1982-03-15 | 1982-03-15 | Exhaust device for motorcycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02119610A true JPH02119610A (en) | 1990-05-07 |
| JPH0584812B2 JPH0584812B2 (en) | 1993-12-03 |
Family
ID=16863304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22759089A Granted JPH02119610A (en) | 1989-09-04 | 1989-09-04 | Exhaust gas device for motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02119610A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2738284A1 (en) * | 1995-08-31 | 1997-03-07 | Suzuki Co Ltd | MOTORCYCLE EXHAUST CIRCUIT |
| JP2008255792A (en) * | 2007-03-30 | 2008-10-23 | Honda Motor Co Ltd | Exhaust device of motorcycle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101446106B1 (en) * | 2014-03-04 | 2014-10-06 | 허만철 | generate facilities using twin blade wind power generator of moving type |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS446243Y1 (en) * | 1966-04-01 | 1969-03-07 | ||
| JPS5256104U (en) * | 1975-10-20 | 1977-04-22 | ||
| JPS5364442U (en) * | 1976-11-01 | 1978-05-31 | ||
| JPS562281A (en) * | 1979-06-16 | 1981-01-10 | Yamaha Motor Co Ltd | Power unit for motorcycle |
| JPS57121928A (en) * | 1981-01-21 | 1982-07-29 | Honda Motor Co Ltd | Motorcycle having turbosupercharger equipped engine |
| JPS57121926A (en) * | 1981-01-20 | 1982-07-29 | Honda Motor Co Ltd | Motorcycle having turbo-supercharger equipped engine |
-
1989
- 1989-09-04 JP JP22759089A patent/JPH02119610A/en active Granted
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS446243Y1 (en) * | 1966-04-01 | 1969-03-07 | ||
| JPS5256104U (en) * | 1975-10-20 | 1977-04-22 | ||
| JPS5364442U (en) * | 1976-11-01 | 1978-05-31 | ||
| JPS562281A (en) * | 1979-06-16 | 1981-01-10 | Yamaha Motor Co Ltd | Power unit for motorcycle |
| JPS57121926A (en) * | 1981-01-20 | 1982-07-29 | Honda Motor Co Ltd | Motorcycle having turbo-supercharger equipped engine |
| JPS57121928A (en) * | 1981-01-21 | 1982-07-29 | Honda Motor Co Ltd | Motorcycle having turbosupercharger equipped engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2738284A1 (en) * | 1995-08-31 | 1997-03-07 | Suzuki Co Ltd | MOTORCYCLE EXHAUST CIRCUIT |
| JP2008255792A (en) * | 2007-03-30 | 2008-10-23 | Honda Motor Co Ltd | Exhaust device of motorcycle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0584812B2 (en) | 1993-12-03 |
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