JPS61205318A - Exhaust pipe of engine for motorcycle - Google Patents

Exhaust pipe of engine for motorcycle

Info

Publication number
JPS61205318A
JPS61205318A JP4425785A JP4425785A JPS61205318A JP S61205318 A JPS61205318 A JP S61205318A JP 4425785 A JP4425785 A JP 4425785A JP 4425785 A JP4425785 A JP 4425785A JP S61205318 A JPS61205318 A JP S61205318A
Authority
JP
Japan
Prior art keywords
engine
exhaust pipes
exhaust pipe
vehicle body
pipes
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.)
Withdrawn
Application number
JP4425785A
Other languages
Japanese (ja)
Inventor
Takashi Kudo
隆志 工藤
Shusaku Noguchi
周作 野口
Tatsuji Kiyono
辰二 清野
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP4425785A priority Critical patent/JPS61205318A/en
Publication of JPS61205318A publication Critical patent/JPS61205318A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2340/00—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses
    • F01N2340/04—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses characterised by the arrangement of an exhaust pipe, manifold or apparatus in relation to vehicle frame or particular vehicle parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
    • F01N2590/04—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for motorcycles

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)
  • Exhaust Silencers (AREA)

Abstract

PURPOSE:To efficiently arrange pipes, by providing exhaust pipes of cylinders, arranged in the rear side of a car body in a vertical multicylinder V-engine, to be extended rearward through a part between both left and right arms of a rear fork and forming the section of insertion parts, between the both left and right arms, of said exhaust pipes in an oval shape. CONSTITUTION:A vertical four-cylinder V-engine, having cylinders 17, 18 in the front side of a car body and cylinders 19, 20 in the rear side, respectively connects exhaust pipes 21-24 with each cylinder 17-20. Here the exhaust pipes 21, 22, after they are extended to the rear of the car body via the bottom of the engine, join together into one pipe. While the exhaust pipes 23, 24 are inserted from the rear of the engine to a space 11d between both left and right arms 11a, 11a of a rear fork 11, and the pipes 23, 24, after they are curved in a U-shape and extended to the rear of the car body, join together into one pipe. Further the exhaust pipes 23, 24, joining with the one pipe collecting the exhaust pipes 21, 22, are connected with a muffler. Here the exhaust pipes 23, 24, forming their section in insertion parts 23a, 24a of the space 11d to an oval shape, prevent the rear fork 11 or the like from being brought into contact with the pipes.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は自動二輪車用エンジンの排気管に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to an exhaust pipe for a motorcycle engine.

〔従来の技術〕[Conventional technology]

ｉｔ置置型型多気筒１ンジン搭載した自動二輪車では、
重体後方側に配置した気筒に接続される排気管をエンジ
ンと後輪の間を通してから車体後方　　　□に延出して
いるものがある。For motorcycles equipped with an IT stationary multi-cylinder single engine,
Some exhaust pipes are connected to cylinders located at the rear of the heavy vehicle, and extend toward the rear of the vehicle after passing between the engine and the rear wheels.

〔発明が解決しようとＪる問題点〕[Problems that the invention attempts to solve]

しかし、Ｊ−ンジンと後輪との間にはリアフォーク、リ
アＩＪスペンジ１ン装置、駆動チェーン等が配設されて
おり、これらに接触しないように排気管を配管するので
、効率のよい配管と有効断面積を確保した形状の排気管
が望まれていた。However, the rear fork, rear IJ engine unit, drive chain, etc. are installed between the J-engine and the rear wheel, and the exhaust pipe is routed so as not to come into contact with these components, so efficient piping is possible. There was a desire for an exhaust pipe with a shape that ensured an effective cross-sectional area.

そこで、本発明は限られたスペースに効率よく排気管を
配管するとともに、有効断面積を確保し／Ｊ形状の排気
管を促供りることを目的としている。Therefore, an object of the present invention is to efficiently install an exhaust pipe in a limited space, secure an effective cross-sectional area, and promote a J-shaped exhaust pipe.

（問題点を解決するための手段） 本発明はＬ閉口的を達成するために、縦置Ｖ型多気筒エ
ンジンを備え、車体後方側に配置した気筒に接続される
排気管をエンジンの後方と後輪との間を通して車体後方
へ延出さＵた自動二輪車にＪ３いて、前記排気管を中休
後方に設けたリアフォークの左右両アーム間を通して車
体後方へ延出するとともに、す［気管のリアフォークの
左右両アーム間挿通部の断面を車体前後方向に長径の長
円形状に形成したことを特徴としている。(Means for Solving the Problems) In order to achieve the L-closed design, the present invention is equipped with a vertical V-type multi-cylinder engine, and the exhaust pipe connected to the cylinder arranged at the rear side of the vehicle body is connected to the rear side of the engine. The exhaust pipe extends to the rear of the vehicle body through between the left and right arms of the rear fork provided at the rear of the intermediate suspension, and extends to the rear of the vehicle body through between the exhaust pipe and the rear fork. A feature is that the cross section of the insertion portion between the left and right arms of the fork is formed into an oval shape with a long diameter in the longitudinal direction of the vehicle body.

〔作　用〕[For production]

このように構成することにより、有効断面積を確保した
排気管を効率よく配管できる。With this configuration, an exhaust pipe with an effective cross-sectional area can be efficiently installed.

〔実施例〕〔Example〕

本発明の一実施例を図面に基づいて説明りる。 An embodiment of the present invention will be described based on the drawings.

自動二輪車１は、上下幅の大きな断面矩形の筒状体で形
成したメインフレーム２を左右対称に右し、メインフレ
ーム２は先端にヘッドバイブ３を、後端にピボットプレ
ート４をそれぞれ溶着し、後部に面にシートレール５を
接合υるとともに、下部中央にエンジンハンガー６を設
けている。The motorcycle 1 has a main frame 2 formed of a cylindrical body having a rectangular cross section with a large vertical width, which is symmetrically mounted on the right side, and a head vibrator 3 is welded to the tip of the main frame 2, and a pivot plate 4 is welded to the rear end of the main frame 2. A seat rail 5 is connected to the rear surface, and an engine hanger 6 is provided at the center of the lower part.

ヘッドバイブ３には前輪７を支承するフ１」ンＩ・フＡ
−り８が設（プられ、ハンドルパー９ににり左右に操向
０■能となっている。The head vibe 3 has a fan I and fan A that support the front wheel 7.
The steering wheel is set at 8, and the steering wheel is set at 9 and the steering wheel can be steered left and right.

ピボットプレート４はその上端に一体的に設けられたシ
ートガセットプレート１０をシートレール５に結合して
シートレール５を支持し、下部にリアフォーク１１を上
下方向に回動可能に支持し、該リアフォーク１１に後輪
１２が支承され、リアフォーク１１とシートガセットプ
レート１０との間にリア１ノスペンシヨン装置１３を設
けている。The pivot plate 4 supports the seat rail 5 by connecting a seat gusset plate 10 integrally provided at its upper end to the seat rail 5, and supports a rear fork 11 at its lower part so as to be rotatable in the vertical direction. A rear wheel 12 is supported by a fork 11, and a rear suspension device 13 is provided between the rear fork 11 and a seat gusset plate 10.

リアフォーク１１は車体後方へ並行する左右のアーム１
１ａ、１１ａの後端で後輪１２を支承し、該両アーム１
１ａ、１１ａの前端を円筒形のピボット軸受１１ｂで連
結し、両アーム１１ａ、１’１ａの前端寄りに両アーム
１１ａ、１１ａを連結するクロスフレーム１１Ｃを設け
、ピボット軸受１１ｂとクロスフレーム１１Ｃ間に空間
１１ｄを形成している。The rear fork 11 has left and right arms 1 that run parallel to the rear of the vehicle.
The rear wheels 12 are supported at the rear ends of 1a and 11a, and both arms 1
The front ends of 1a and 11a are connected by a cylindrical pivot bearing 11b, and a cross frame 11C that connects both arms 11a and 11a is provided near the front end of both arms 11a and 1'1a, and a cross frame 11C is provided between the pivot bearing 11b and the cross frame 11C. A space 11d is formed.

メインフレーム２とシートレール５の上部の前部にはフ
ューエルタンク１４が載置され、フューエルタンク１４
の後方にシート（図示せず）が謹けられる。A fuel tank 14 is mounted on the front part of the upper part of the main frame 2 and the seat rail 5.
A seat (not shown) is installed behind the seat.

エンジンハンガー６にはエンジン１５が、エンジンハン
ガー６とピボットプレート４に支持されて設けられ、エ
ンジン１５の前方にラジェータ１６が配設されている。An engine 15 is provided on the engine hanger 6 and supported by the engine hanger 6 and the pivot plate 4, and a radiator 16 is provided in front of the engine 15.

エンジン１５は縦置Ｖ望４気筒で、車体前方側に配置さ
れた気ｆ’１Ｊ１７．１８と、車体後方側に配置された
気筒１９．２０とを右し、車体前方側気筒１７．１８に
排気管２１．２２を、車体後方側気筒１９，２０に排気
管２３．２４をそれぞれ接続している。The engine 15 is a vertically-mounted 4-cylinder V cylinder, with cylinders 17.18 and 17.18 located at the front of the vehicle, cylinders 19.20 and 19.20 located at the rear of the vehicle, respectively, and cylinder 17.18 located at the front of the vehicle. Exhaust pipes 21, 22 and 23, 24 are connected to cylinders 19, 20 on the rear side of the vehicle body, respectively.

排気管２１．２２はエンジン１５の前方からエンジン１
５の下方を経てｉｌｉ体後方に延出し、車体後方で１本
にまとめられている。The exhaust pipes 21 and 22 are connected to the engine 1 from the front of the engine 15.
It extends to the rear of the vehicle through the lower part of the vehicle, and is gathered into one at the rear of the vehicle.

排気管２３．２４はエンジン１５の後方からエンジン１
５と後輪１２との間に配設されるリアフォーク１１の左
右両アーム１１ａ、１１ａ間に形゛　成された空間１１
ｄに挿通され、１ンジン１５の下部後方でそれぞれＵ字
状に屈曲されて車体後方に延出し、車体後方で１本にま
とめられ、さらに前記の排気管２１．２２をまとめた１
本と結合して１本にまとめられマフラー２５に連結して
いる。The exhaust pipes 23 and 24 are connected to the engine 1 from the rear of the engine 15.
A space 11 formed between both left and right arms 11a, 11a of the rear fork 11 disposed between
d, are bent into a U-shape at the rear of the lower part of the engine 15, extend toward the rear of the vehicle body, are combined into one at the rear of the vehicle body, and are further combined with the aforementioned exhaust pipes 21 and 22.
It is combined with the book and collected into one, and is connected to the muffler 25.

リアフォーク１１の空間１１ｄには第２図に示す如く、
リアサスペンシコン装置１３のロッド１３ａが挿通され
、このロッド１３ａに隣接して排気管２３．２４が挿通
されている。In the space 11d of the rear fork 11, as shown in FIG.
A rod 13a of the rear suspension device 13 is inserted through it, and an exhaust pipe 23, 24 is inserted adjacent to this rod 13a.

排気管２３．２４はリアフォーク１１及びロッド１３ａ
に接触しないように、リアフォーク１１の空間１１ｄ挿
通郡２３ａ、２４ａの断面を車体前後方向に長径の長円
形状にそれぞれ形成され、これにより有効断面積を確保
している。The exhaust pipes 23 and 24 are connected to the rear fork 11 and the rod 13a.
The cross sections of the insertion groups 23a and 24a of the space 11d of the rear fork 11 are each formed into an oval shape with a long diameter in the longitudinal direction of the vehicle body, thereby ensuring an effective cross-sectional area.

また、リアフォーク１１のピボット軸受１１ｂは、第３
図及び第４図に示Ｊ、」；うに、排気管２３゜２４が挿
通される部分では排気管２３．２４と対向づる面を偏心
加工してクリアランスを確保しＣいる。Further, the pivot bearing 11b of the rear fork 11 is the third
As shown in Figures 4 and 4, at the portion where the exhaust pipes 23 and 24 are inserted, the surfaces facing the exhaust pipes 23 and 24 are eccentrically machined to ensure clearance.

このように構成することにより、排気管２３゜２４に有
効断面積を確保して限られたスペースに効率のよい配管
をすることができる。With this configuration, an effective cross-sectional area can be ensured in the exhaust pipes 23 and 24, and efficient piping can be provided in a limited space.

〔発明の効果〕〔Effect of the invention〕

１記のように本発明は、縦置Ｖ型多気１ｎエンジンを備
え、車体後方側に配置した気筒に接続される排気管をエ
ンジンの後方と後輪との間を通して車体後方へ延出させ
た自動二輪車において、前記排気管を車体後方に設けた
リアフォークの左右両アーム間を通して車体後方へ延出
するとともに、排気管のリアフォークの左右両アーム間
挿通部の断面を車体前後方向に長径の長円形状に形成し
たので、限られたスペースに効率よく配管できると共に
、排気管の有効断面積を確保することができる。As described in item 1, the present invention is equipped with a vertically mounted V-type multi-air 1N engine, and has an exhaust pipe connected to a cylinder arranged at the rear side of the vehicle body passing between the rear of the engine and the rear wheels and extending toward the rear of the vehicle body. In a motorcycle, the exhaust pipe is extended to the rear of the vehicle body through between the left and right arms of a rear fork provided at the rear of the vehicle body, and the cross section of the portion of the exhaust pipe that passes between the left and right arms of the rear fork is shaped so as to have a long diameter in the longitudinal direction of the vehicle body. Since it is formed into an oval shape, piping can be efficiently installed in a limited space, and the effective cross-sectional area of the exhaust pipe can be secured.

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

図は本発明の一実施例を示すもので、−図は自動二輪車
の側面図、第２図は一部の概゛略を示す平面図、第３図
は第２図の■−■断、断固面図、４図は第２図のＩＶ　
−ＩＶ断面図である。The figures show one embodiment of the present invention, - figure is a side view of a motorcycle, figure 2 is a plan view schematically showing a part, figure 3 is a cross section of figure 2, Figure 4 is the IV of Figure 2.
-IV sectional view.

Claims (1)

【特許請求の範囲】[Claims] １、縦置Ｖ型多気筒エンジンを備え、車体後方側に配置
した気筒に接続される排気管をエンジンの後方と後輪と
の間を通して車体後方へ延出させた自動二輪車において
、前記排気管を車体後方に設けたリアフォークの左右両
アーム間を通して車体後方へ延出するとともに、排気管
のリアフォークの左右両アーム間挿通部の断面を車体前
後方向に長径の長円形状に形成したことを特徴とする自
動二輪車用エンジンの排気管。1. In a motorcycle equipped with a vertical V-type multi-cylinder engine and having an exhaust pipe connected to a cylinder arranged on the rear side of the vehicle body passing between the rear of the engine and the rear wheels and extending toward the rear of the vehicle body, the exhaust pipe extends toward the rear of the vehicle body through between the left and right arms of the rear fork provided at the rear of the vehicle body, and the cross section of the insertion part between the left and right arms of the rear fork of the exhaust pipe is formed into an oval shape with a long diameter in the longitudinal direction of the vehicle body. An exhaust pipe for a motorcycle engine featuring:
JP4425785A 1985-03-06 1985-03-06 Exhaust pipe of engine for motorcycle Withdrawn JPS61205318A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4425785A JPS61205318A (en) 1985-03-06 1985-03-06 Exhaust pipe of engine for motorcycle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4425785A JPS61205318A (en) 1985-03-06 1985-03-06 Exhaust pipe of engine for motorcycle

Publications (1)

Publication Number Publication Date
JPS61205318A true JPS61205318A (en) 1986-09-11

Family

ID=12686464

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4425785A Withdrawn JPS61205318A (en) 1985-03-06 1985-03-06 Exhaust pipe of engine for motorcycle

Country Status (1)

Country Link
JP (1) JPS61205318A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0319792U (en) * 1989-07-10 1991-02-26
JP2008162589A (en) * 2008-03-10 2008-07-17 Yamaha Motor Co Ltd Motorcycle
CN100436243C (en) * 2005-04-28 2008-11-26 本田技研工业株式会社 Body structure of automatic two-wheel vehicle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0319792U (en) * 1989-07-10 1991-02-26
CN100436243C (en) * 2005-04-28 2008-11-26 本田技研工业株式会社 Body structure of automatic two-wheel vehicle
JP2008162589A (en) * 2008-03-10 2008-07-17 Yamaha Motor Co Ltd Motorcycle
JP4612070B2 (en) * 2008-03-10 2011-01-12 ヤマハ発動機株式会社 Motorcycle

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