JP2813190B2 - Exhaust system for multi-cylinder engine - Google Patents
Exhaust system for multi-cylinder engineInfo
- Publication number
- JP2813190B2 JP2813190B2 JP1031162A JP3116289A JP2813190B2 JP 2813190 B2 JP2813190 B2 JP 2813190B2 JP 1031162 A JP1031162 A JP 1031162A JP 3116289 A JP3116289 A JP 3116289A JP 2813190 B2 JP2813190 B2 JP 2813190B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust pipe
- exhaust
- engine
- collecting
- partition plate
- 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 - Fee Related
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
- 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
- F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
-
- 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)
- Exhaust Silencers (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、自動二輪車等に搭載される多気筒エンジン
の排気装置に関する。Description: TECHNICAL FIELD The present invention relates to an exhaust device for a multi-cylinder engine mounted on a motorcycle or the like.
（従来の技術） 一般に、内燃エンジンの排気管長さは有効な排気脈動
効果が得られる値に設定されるが、排気圧力波は排気管
内を音速で伝播する関係上、エンジン回転数が低い低速
域においては排気管長さは長く、エンジン回転数が高い
高速域においては排気管長さが短く設定されなければミ
スマッチングが生じ、全速度域においてエンジン性能を
高めることができない。(Prior Art) In general, the length of an exhaust pipe of an internal combustion engine is set to a value at which an effective exhaust pulsation effect can be obtained. However, because an exhaust pressure wave propagates in the exhaust pipe at a sonic speed, the engine speed is low and the engine speed is low. In, the length of the exhaust pipe is long, and if the exhaust pipe length is not set short in a high-speed region where the engine speed is high, mismatching occurs, and the engine performance cannot be improved in the entire speed range.
そこで、排気管同士を連通せしめる連通管内に制御弁
を設けたり、排気管集合部に移動自在な仕切板を設け、
エンジン回転数、排気圧力等のパラメータの変動に応じ
て制御弁を開閉したり、仕切板を移動させて実質的な排
気管長を変化させる技術が既に提案されている（特開昭
61−212622号、実開昭57−193026号公報参照）。Therefore, a control valve is provided in the communication pipe that allows the exhaust pipes to communicate with each other, or a movable partition plate is provided in the exhaust pipe assembly,
A technique has been proposed in which a control valve is opened / closed in accordance with a change in parameters such as an engine speed and an exhaust pressure, and a partition plate is moved to change a substantial exhaust pipe length (Japanese Patent Application Laid-open No. Sho.
No. 61-212622 and Japanese Utility Model Laid-Open No. 57-193026).
（発明が解決しようとする課題） ところで、特にＶ型多気筒エンジンにあっては、相対
向する気筒から排気管集合部までの間隔（直線長さ）が
異なるため、各気筒に合わせた排気管長が求められる。(Problems to be Solved by the Invention) By the way, particularly in a V-type multi-cylinder engine, since the interval (linear length) from the opposed cylinder to the exhaust pipe collecting portion is different, the exhaust pipe length adapted to each cylinder is different. Is required.
しかしながら、排気管レイアウトはデザイン、取り廻
し等の制約を受け、十分な排気管長を確保することが難
し、エンジンの性能特性を簡単な構造で容易に調整する
ことができないという問題があった。However, the layout of the exhaust pipe is restricted by design, handling, and the like, so that it is difficult to secure a sufficient exhaust pipe length, and the performance characteristics of the engine cannot be easily adjusted with a simple structure.
本発明は上記問題に鑑みてなされたもので、その目的
とする処は、実質的な排気管長を十分確保しつつ、所望
のエンジン性能を得ることができる多気筒エンジンの排
気装置を提供することにある。The present invention has been made in view of the above problems, and an object of the present invention is to provide an exhaust device for a multi-cylinder engine capable of obtaining a desired engine performance while sufficiently securing a substantial exhaust pipe length. It is in.
（課題を解決するための手段） 上記目的を達成するため、本発明は、多気筒エンジン
の各気筒から導出する複数の排気管を集合する集合部の
長手方向に接続部を有し、該集合部を単一のマフラーに
接続する多気筒エンジンの排気装置において、前記排気
管の集合部の集合点から下流側に、該集合部内を複数に
分割する少なくとも２枚の仕切板を長さ方向に直列状に
並べて設けるとともに、少なくとも集合点と最前部の仕
切板及び該最前部の仕切板とこれに連なる次の仕切板と
の間であって前記集合部の接続部近傍に仕切板の長さ方
向寸法に比して十分小さな隙間を形成したことを特徴と
する。(Means for Solving the Problems) In order to achieve the above object, the present invention has a connecting portion in a longitudinal direction of a collecting portion for collecting a plurality of exhaust pipes derived from each cylinder of a multi-cylinder engine, In the exhaust system of a multi-cylinder engine having a unit connected to a single muffler, at least two partition plates that divide the inside of the assembly into a plurality of parts are arranged in the length direction on the downstream side from the gathering point of the gathering part of the exhaust pipe. Along with being arranged in series, at least the length of the partition plate between the gathering point and the foremost partition plate and between the foremost partition plate and the next partition plate connected thereto and near the connection part of the collective portion It is characterized in that a gap that is sufficiently smaller than the dimension in the direction is formed.
（作用） 本発明によれば、仕切板によって各排気管の長さが実
質的に長くなり、仕切板間の隙間の設定値によって排気
管の等価管長が変化してエンジンの性能特性が変わるた
め、少なくとも集合点と最前部の仕切板及び該最前部の
仕切板とこれに連なる次の仕切板との間に形成された隙
間を適当に設定することによって所望のエンジン性能を
得ることができる。(Operation) According to the present invention, the length of each exhaust pipe is substantially lengthened by the partition plate, and the equivalent pipe length of the exhaust pipe changes according to the set value of the gap between the partition plates, thereby changing the performance characteristics of the engine. A desired engine performance can be obtained by appropriately setting at least the gathering point and the frontmost partition plate and the gap formed between the frontmost partition plate and the next partition plate connected thereto.
又、最前部の仕切板とこれに連なる次の仕切板との間
であって排気管の集合部の接続部近傍に隙間を形成した
ため、接続部代を調整することによって隙間を容易に調
整することができ、所望のエンジン性能を得ることがで
きる。Further, since a gap is formed between the frontmost partition plate and the next partition plate connected thereto and near the connection portion of the exhaust pipe collecting portion, the gap can be easily adjusted by adjusting the connection portion margin. And the desired engine performance can be obtained.
（実施例） 以下に本発明の実施例を添付図面に基づいて説明す
る。(Example) Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.
第１図は本発明に係る排気装置の排気管集合部の破断
平面図、第２図は第１図のII−II線断面図、第３図は第
２図のIII−III線断面図、第４図は同排気装置を備える
自動二輪車の側面図、第５図は同自動二輪車の平面図、
第６図はエンジンの性能特性線図である。FIG. 1 is a cutaway plan view of an exhaust pipe assembly of the exhaust device according to the present invention, FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1, FIG. 3 is a cross-sectional view taken along line III-III of FIG. FIG. 4 is a side view of the motorcycle including the exhaust device, FIG. 5 is a plan view of the motorcycle,
FIG. 6 is a performance characteristic diagram of the engine.
第４図に示す自動二輪車１の車体の略中央部にはＶ型
２気筒エンジン２が搭載されており、該エンジンの前方
シリンダ3aの前部からは排気管４が、後方シリンダ3bの
後部からは排気管５がそれぞれ導出している。A V-type two-cylinder engine 2 is mounted substantially at the center of the body of the motorcycle 1 shown in FIG. 4, and an exhaust pipe 4 is provided from a front portion of a front cylinder 3a and a rear portion of a rear cylinder 3b of the engine. Are respectively derived from the exhaust pipes 5.
上記一方の排気管４は、第５図にも示すように、前方
シリンダ3aから斜め前下方に導出した後、略直角に曲げ
られて斜め後下方へ延出し、そこから更に曲げられて車
体後方に沿って略水平に延びている。As shown in FIG. 5, the one exhaust pipe 4 extends obliquely forward and downward from the front cylinder 3a, is bent at a substantially right angle, extends obliquely rearward and downward, and is further bent therefrom to extend rearward of the vehicle body. And extend substantially horizontally along.
又、前記他方の排気管５は、後方シリンダ3bから斜め
後下方へ導出した後、略垂直に下がり、そこから略直角
に曲げられて略水平に前方へ延出した後、Ｕ字状に曲げ
られて略水平に後方へ向かい、前記排気管４に合流して
いる。そして、これらの排気管4,5が集合する集合部は
単一の共鳴管６を構成しており、該共鳴管６の後端部に
は消音機能を有するマフラー７が接続されている。尚、
第４図及び第５図において、８は前輪、９は後輪、10は
燃料タンク、11はシートである。Further, the other exhaust pipe 5 descends obliquely rearward and downward from the rear cylinder 3b, descends substantially vertically, bends at a substantially right angle therefrom, extends substantially horizontally forward, and then bends into a U-shape. And is substantially horizontally directed rearward to join the exhaust pipe 4. The gathering portion where these exhaust pipes 4 and 5 gather forms a single resonance pipe 6, and a muffler 7 having a silencing function is connected to the rear end of the resonance pipe 6. still,
4 and 5, reference numeral 8 denotes a front wheel, 9 denotes a rear wheel, 10 denotes a fuel tank, and 11 denotes a seat.
而して、上記排気管4,5、共鳴管６、マフラー７等が
本発明に係る排気装置を構成するが、本実施例において
は、第１図及び第２図に示すように、排気管4,5の集合
部を構成する共鳴管６内の幅方向中央部には、該共鳴管
６内を長さ方向において左右に２分割する３枚の仕切板
12,13,14が長さ方向に直列状に設けられており、これら
の仕切板12,13,14の相隣接するもの同士の間には仕切板
12〜14の長さ方向寸法に比して十分小さな隙間δ2,δ３
が形成されている。又、仕切板12と、排気管4,5との集
合点ａとの間には図示のように仕切板12〜14の長さ方向
寸法に比して十分小さな隙間δ１が形成されている。
尚、第１図に示すように、隙間δ２は排気管4,5の集合
部と共鳴管６との接続部近傍に形成されている。Thus, the exhaust pipes 4, 5, the resonance pipe 6, the muffler 7 and the like constitute an exhaust device according to the present invention. In the present embodiment, as shown in FIG. 1 and FIG. At the center in the width direction in the resonance tube 6 constituting the collecting portion of the four and five, three partition plates for dividing the inside of the resonance tube 6 into two in the longitudinal direction.
12, 13, 14 are provided in series in the longitudinal direction, and a partition plate is provided between adjacent ones of these partition plates 12, 13, 14.
Clearances δ 2 , δ 3 small enough compared to the length dimension of 12-14
Are formed. Further, the partition plate 12, are sufficiently small gap [delta] 1 is formed than the lengthwise dimension of the partition plate 12 to 14 as shown between the set point a between the exhaust pipe 4, 5 .
As shown in FIG. 1, the gap [delta] 2 is formed in the vicinity of the connecting portion and the resonance pipe 6 and the collecting part of the exhaust pipe 4, 5.
ここで、上記隙間δ1,δ2,δ３の寸法を種々変えて得
られるエンジン２の出力特性を第６図に示す。Here, the output characteristics of the engine 2 obtained by variously changing the dimensions of the gaps δ 1 , δ 2 , δ 3 are shown in FIG.
即ち、第６図の横軸はエンジン回転数Ｎ、縦軸は軸馬
力Ｐであり、図中の実線カーブＡはδ１＝δ２＝δ３＝
０の場合（即ち、集合点ａと最前部の仕切板12及び仕切
板12,13,14の間に隙間が無い場合）の特性カーブ、破線
カーブＢはδ１＝8mm、δ２＝δ３＝2mmの場合の特性カ
ーブ、鎖線カーブＣはδ１＝16mm、δ２＝δ３＝4mmの
場合の特性カーブである。That is, the horizontal axis in FIG. 6 is the engine speed N and the vertical axis is the shaft horsepower P, and the solid curve A in the figure is δ 1 = δ 2 = δ 3 =
In the case of 0 (that is, when there is no gap between the gathering point a and the frontmost partition plate 12 and the partition plates 12, 13, 14), the dashed curve B is δ 1 = 8 mm, δ 2 = δ 3 The characteristic curve in the case of = 2 mm and the dashed line curve C are the characteristic curves in the case of δ 1 = 16 mm and δ 2 = δ 3 = 4 mm.
第６図から明らかなように、隙間δ1,δ2,δ３の寸法
を変えればエンジン２の特性が変化し、具体的にはエン
ジン回転数Ｎが図示のN1以下（Ｎ≦N1）の低速域におい
ては、隙間δ1,δ2,δ３の寸法が大きい程軸馬力Ｐは大
きくなり、エンジン回転数ＮがN1＜Ｎ≦N2である中速域
においては、逆に隙間δ1,δ2,δ３の寸法が小さい程大
きな軸馬力Ｐが得られる。尚、エンジン回転数ＮがＮ＞
N2である高速域においては、隙間δ1,δ2,δ３の寸法に
関係なく何れの場合も略同等の軸馬力Ｐが得られる。As is clear from FIG. 6, if the dimensions of the gaps δ 1 , δ 2 , δ 3 are changed, the characteristics of the engine 2 are changed. Specifically, the engine speed N is equal to or less than the illustrated N 1 (N ≦ N 1). In the low-speed range of), the shaft horsepower P increases as the size of the gaps δ 1 , δ 2 , δ 3 increases, and conversely in the medium-speed range where the engine speed N is N 1 <N ≦ N 2. The smaller the size of the gaps δ 1 , δ 2 , δ 3 , the greater the shaft horsepower P is obtained. Note that the engine speed N is N>
In high speed range is N 2, the clearance δ 1, δ 2, shaft horsepower P substantially equal in any case regardless of the size of the [delta] 3 is obtained.
従って、第６図に示す例で言えば、低速域（Ｎ≦N1）
で高出力を得るには、隙間δ1,δ2,δ３をδ１＝16mm、
δ２＝δ３＝4mmに設定すべきであり、中速域（N1＜Ｎ
≦N2）で高出力を得るには、δ１＝δ２＝δ３＝０に設
定すべきである。又、低・中速域に亘って平均的な出力
を得るには、隙間δ1,δ2,δ３をδ１＝8mm、δ２＝δ
３＝2mmに設定すべきである。Accordingly, in the example shown in FIG. 6, the low-speed range (N ≦ N 1 )
In order to obtain a high output in the above, the gaps δ 1 , δ 2 , δ 3 are set to δ 1 = 16 mm,
δ 2 = δ 3 = 4 mm and should be set in the medium speed range (N 1 <N
In order to obtain a high output with ≦ N 2 ), it is necessary to set δ 1 = δ 2 = δ 3 = 0. In order to obtain an average output over the low / medium speed range, the gaps δ 1 , δ 2 , δ 3 are set to δ 1 = 8 mm, δ 2 = δ
3 should be set to 2 mm.
而して、本実施例においては、仕切板12,13,14によっ
て共鳴管６内を長さ方向において左右に２分割している
ため、各排気管4,5の長さが実質的に長くなり、これら
の排気管4,5の等価管長は集合点ａと最前部の仕切板12
及び仕切板12,13,14間の隙間δ1,δ2,δ３の設定によっ
て変わり、従って、前述のようにエンジン２の性能特性
を所望のものに設定することができる。In this embodiment, since the inside of the resonance pipe 6 is divided into two in the length direction by the partition plates 12, 13, and 14, the length of each exhaust pipe 4, 5 is substantially longer. The equivalent pipe lengths of these exhaust pipes 4 and 5 are set at the gathering point a and the frontmost partition plate 12.
It depends on the setting of the gaps δ 1 , δ 2 , δ 3 between the partition plates 12, 13, 14, and therefore, the performance characteristics of the engine 2 can be set as desired as described above.
又、本実施例においては、仕切板12と13との間の隙間
δ２を排気管4,5の集合部と共鳴管６との接続部近傍に
形成したため、排気管4,5の集合部と共鳴管６との接合
部での嵌合代を調整することによって隙間δ２を容易に
調整することができ、所望のエンジン性能を得ることが
できる。Further, in the present embodiment, since the formation of the gap [delta] 2 between the partition plates 12 and 13 to the connecting portion vicinity of a set portion and the resonance tube 6 of the exhaust pipe 4, 5, a set portion of the exhaust pipe 4, 5 and Hamagodai at the junction of the resonance tube 6 can be easily adjusted clearance [delta] 2 by adjusting, it is possible to obtain a desired engine performance.
（発明の効果） 以上の説明で明らかなように、本発明によれば、多気
筒エンジンの各気筒から導出する複数の排気管を集合す
る集合部の長手方向に接続部を有し、該集合部を単一の
マフラーに接続する多気筒エンジンの排気装置におい
て、前記排気管の集合部の集合点から下流側に、該集合
部内を複数に分割する少なくとも２枚の仕切板を長さ方
向に直列状に並べて設けるとともに、少なくとも集合点
と最前部の仕切板及び該最前部の仕切板とこれに連なる
次の仕切板との間であって前記集合部の接続部近傍に仕
切板の長さ方向寸法に比して十分小さな隙間を形成した
ため、実質的な排気管長を十分確保しつつ、所望のエン
ジン性能を得ることができるという効果が得られる。(Effects of the Invention) As is apparent from the above description, according to the present invention, a connecting part is provided in the longitudinal direction of a collecting part for collecting a plurality of exhaust pipes derived from each cylinder of a multi-cylinder engine, In the exhaust system of a multi-cylinder engine having a unit connected to a single muffler, at least two partition plates that divide the inside of the assembly into a plurality of parts are arranged in the length direction on the downstream side from the gathering point of the gathering part of the exhaust pipe. Along with being arranged in series, at least the length of the partition plate between the gathering point and the foremost partition plate and between the foremost partition plate and the next partition plate connected thereto and near the connection part of the collective portion Since the gap is formed sufficiently small as compared with the dimension in the direction, it is possible to obtain an effect that desired engine performance can be obtained while sufficiently securing a substantial exhaust pipe length.
又、本発明によれば、最前部の仕切板とこれに連なる
仕切板との間であって排気管の集合部の接続部近傍に隙
間を形成したため、接続部代を調整することによって隙
間を容易に調整することができるという効果も得られ
る。Further, according to the present invention, since a gap is formed between the frontmost partition plate and the partition plate connected thereto and near the connection portion of the exhaust pipe collecting portion, the gap is adjusted by adjusting the connection portion allowance. The effect that adjustment can be easily performed is also obtained.
第１図は本発明に係る排気装置の排気管集合部の破断平
面図、第２図は第１図のII−II線断面図、第３図は第２
図のIII−III線断面図、第４図は同排気装置を備える自
動二輪車の側面図、第５図は同自動二輪車の平面図、第
６図はエンジンの性能特性線図である。 ２……多気筒エンジン、4,5……排気管、６……共鳴管
（排気管集合部）、７……マフラー、12〜15……仕切
板、ａ……集合点、δ１〜δ３……隙間。FIG. 1 is a cutaway plan view of an exhaust pipe assembly of an exhaust device according to the present invention, FIG. 2 is a sectional view taken along the line II-II in FIG. 1, and FIG.
FIG. 4 is a side view of the motorcycle having the exhaust device, FIG. 5 is a plan view of the motorcycle, and FIG. 6 is a performance characteristic diagram of the engine. 2 ... multi-cylinder engine, 4,5 ... exhaust pipe, 6 ... resonant pipe (exhaust pipe collecting part), 7 ... muffler, 12-15 ... partition plate, a ... collecting point, δ 1 -δ 3 ... gap.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F01N 7/10──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 6 , DB name) F01N 7/10
Claims (1)
の排気管を集合する集合部の長手方向に接続部を有し、
該集合部を単一のマフラーに接続する多気筒エンジンの
排気装置において、 前記排気管の集合部の集合点から下流側に、該集合部内
を複数に分割する少なくとも２枚の仕切板を長さ方向に
直列状に並べて設けるとともに、少なくとも集合点と最
前部の仕切板及び該最前部の仕切板とこれに連なる次の
仕切板との間であって前記集合部の接続部近傍に仕切板
の長さ方向寸法に比して十分小さな隙間を形成したこと
を特徴とする多気筒エンジンの排気装置。1. A connecting portion in a longitudinal direction of a collecting portion for collecting a plurality of exhaust pipes derived from each cylinder of a multi-cylinder engine,
In an exhaust system for a multi-cylinder engine that connects the collecting portion to a single muffler, at least two partition plates that divide the inside of the collecting portion into a plurality of pieces are provided downstream from a collecting point of the collecting portion of the exhaust pipe. Along with providing the partition in series in the direction, at least the gathering point and the foremost partition and between the foremost partition and the next partition connected to the same, and near the connecting part of the collecting part, An exhaust device for a multi-cylinder engine, wherein a gap is formed that is sufficiently small as compared with a length dimension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1031162A JP2813190B2 (en) | 1989-02-13 | 1989-02-13 | Exhaust system for multi-cylinder engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1031162A JP2813190B2 (en) | 1989-02-13 | 1989-02-13 | Exhaust system for multi-cylinder engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02215917A JPH02215917A (en) | 1990-08-28 |
| JP2813190B2 true JP2813190B2 (en) | 1998-10-22 |
Family
ID=12323746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1031162A Expired - Fee Related JP2813190B2 (en) | 1989-02-13 | 1989-02-13 | Exhaust system for multi-cylinder engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2813190B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2016002956A1 (en) * | 2014-07-04 | 2017-04-27 | ヤマハ発動機株式会社 | Vehicle and V-type multi-cylinder 4-stroke engine unit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6088816A (en) * | 1983-10-20 | 1985-05-18 | Nissan Motor Co Ltd | Exhaust pipe for internal-combustion engine |
-
1989
- 1989-02-13 JP JP1031162A patent/JP2813190B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02215917A (en) | 1990-08-28 |
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| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |