JPS6032931A - Exhaust pipe for multi-cylinder engine - Google Patents
Exhaust pipe for multi-cylinder engineInfo
- Publication number
- JPS6032931A JPS6032931A JP58140819A JP14081983A JPS6032931A JP S6032931 A JPS6032931 A JP S6032931A JP 58140819 A JP58140819 A JP 58140819A JP 14081983 A JP14081983 A JP 14081983A JP S6032931 A JPS6032931 A JP S6032931A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- rear end
- exhaust pipe
- engine
- exhaust
- 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
- 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
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
-
- 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
- F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
- F02B27/04—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues in exhaust systems only, e.g. for sucking-off combustion gases
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
- Characterised By The Charging Evacuation (AREA)
Abstract
Description
【発明の詳細な説明】 するものである。[Detailed description of the invention] It is something to do.
近年，エンジンの高出力．高性能化に排気ガスの脈動作
用が重要な影響ｋＥｌほすことか知られて来ている。In recent years, high output engines have become available. It is becoming known that the pulsating action of exhaust gas has an important effect on improving performance.
しかし、従来，多気筒エンジンに於いて５各気筒に対応
して設けた複数σｊ＠管（／Ｊ後端部會集合して単一な
後管に接続した排気管によル排気する方式に：あっては
．エンジンの高速回転域及び低速回転域には高性能倉得
ることができるが．中速回転域の初期．即ち低速回転域
よｐ中速回転域に移行する間にトルクの谷間を発生し，
このためエンジンの性能を低下して円滑な回転ケ阻害す
る要因となっていた。However, in the past, in a multi-cylinder engine, multiple σj@ pipes (/J) were installed corresponding to each of the five cylinders, and the exhaust pipes were assembled at the rear end and connected to a single rear pipe. : Yes, it is possible to obtain high performance in the high speed and low speed rotation ranges of the engine, but at the beginning of the medium speed rotation range, that is, during the transition from the low speed rotation range to the medium speed rotation range, there is a valley in torque. occurs,
This has been a factor that reduces engine performance and hinders smooth rotation.
上記トルク低下は．排気管θノ後管円で発生−ｒる排気
ガスの脈動がＶ４．接に０【１肯内０ノ後端に影響【−
７史にエンジンの排気パルプ部分にまで及ぷ１こめと考
えられる。The torque decrease mentioned above is. The pulsation of exhaust gas generated at the rear pipe circle of the exhaust pipe θ is V4. Affects the rear end of 0 within 1 [-
It is believed that this has reached the exhaust pulp part of the engine for the first time in seven years.
そこで本発明は，排気ガスの脈動による後管の円圧変化
の影響ケｆｉｌｌ管内に受けにくいようにして。Therefore, in the present invention, the inside of the fill pipe is made less susceptible to the influence of the change in the circular pressure of the rear pipe due to the pulsation of exhaust gas.
エンジンの中速回転域の初期におけるトルク（υ谷間の
発生音防止できる多気筒エンジン用排気智會提案するも
のである。This paper proposes an exhaust technology for multi-cylinder engines that can prevent the noise generated in the torque (υ valley) at the beginning of the engine's medium-speed rotation range.
即ち，本発明に、削喘ｒ工ンジンの気１）１〕側に大々
接続する複数Ｕ．） ＠管の後端部ｒ集合して単一なの
後管に接続した排気管に於いて，…ｊ記前管後嬬部全先
細に絞ったノズル部としたことを特徴とする多気筒エン
ジン用排気管ケ要旨とするものである。That is, in the present invention, a plurality of U.S. ) A multi-cylinder engine characterized in that in an exhaust pipe where the rear ends of the pipes are gathered together and connected to a single rear pipe, the entire rear end of the front pipe is a nozzle portion that is narrowed to a taper. This is a summary of the exhaust pipes for use.
次に不発明の図示の一実施例について説明すると１本例
に、オートバイ用を気筒エンジンの排気Ｗ／に通用した
場合を示すもので、該排気管ｌは、を木の前管２〜２と
１本の後管３とを備え、＠管２〜２の大々後端５ｔ−ｔ
′に上下左右に隣接して集合し、後管３の光拡な前端部
５円に後端部ｔ〜ｔを嵌着し、これら後端部弘〜弘を夫
々先細のテーパー状に絞ったノズル部６〜６としている
。Next, a non-inventive illustrated embodiment will be described. This example shows a case where a motorcycle is used as the exhaust pipe of a cylinder engine, and the exhaust pipe l is a wooden front pipe 2 to 2. and one rear tube 3, and the large rear end 5t-t of @ tube 2~2
', and the rear ends t to t were fitted into the light-expanding front end 5 circles of the rear tube 3, and these rear end parts Hiroshi to Hiroshi were each narrowed into a tapered shape. Nozzle portions 6 to 6 are provided.
このようにした排気管／Ｃあっては、＠ｇ２〜２Ｉｌ／
Ｊ削端をエンジン７の対応する気筒の排気口に接続した
使用時、排気ガ、ｘ、ｉｊ各＠管２〜２から後管３を経
て外部に放出されるが、この際＠管のノズル部６〜乙の
絞り効果により該ノズル部６〜６で排気ガスが流速及び
内圧を高めて後管３内に噴出することとなり、このため
排気ガスの脈動による後管３の内圧変化の影＃ｉｋ＠管
２〜２内が受け難くなっている。If you have an exhaust pipe /C like this, @g2~2Il/
When using the J cutting edge connected to the exhaust port of the corresponding cylinder of the engine 7, the exhaust gas, Due to the throttling effect of the parts 6 to B, the flow velocity and internal pressure of the exhaust gas are increased in the nozzle parts 6 to 6, and the exhaust gas is ejected into the rear pipe 3. Therefore, the effect of the change in the internal pressure of the rear pipe 3 due to the pulsation of the exhaust gas # ik@tube 2~2 is becoming difficult to receive.
この結果、エンジンの中速回転域の初期に於けるトルク
ダウンが防止された。As a result, torque reduction at the beginning of the engine's medium-speed rotation range was prevented.
上記のように本発明の排気管は、前管の後端部を先細に
絞ったノズル部としておシ、使用時に該ノズル部におい
て排ガスが流速及び圧力を高めて後管側へ流れる（／Ｊ
で、後管内の排気ガスの脈動Ｇこより生じる内圧変化の
影響ケノズル部により阻止して＠管内に受け難く、この
ためエンジンが中速回転域の初期におけるトルクダウン
ケ防止できてエンジン性能ケ向上できる。As described above, in the exhaust pipe of the present invention, the rear end of the front pipe has a tapered nozzle part, and when in use, the exhaust gas increases the flow velocity and pressure at the nozzle part and flows toward the rear pipe side.
The influence of the internal pressure change caused by the pulsation of the exhaust gas in the rear pipe is blocked by the nozzle part and is not easily affected by the change in the internal pressure inside the pipe. Therefore, it is possible to prevent the engine from losing torque at the beginning of the medium speed rotation range, and improve engine performance.
図面げ不発明の一実施例を示すもので、第１図に一部欠
截した右ＩＩ＋ ［［１図、第２図に転向平凹図。
第３図は第１図のＥ都Ｑ」拡大図、第を図は第３（２）
のＡ−Ａ線矢視断囲図である７
１・・・排気管、２・・・前官、３・・・後管、ｔ・・
・後端い。
Ｓ・−・開端部、６・・−ノズル部、７・・・エンジン
第７図
第５図
第４図The drawings show one embodiment of the invention, and the right side II+, which is partially cut out in FIG. Figure 3 is an enlarged view of Figure 1's Eto Q.
7 is a cross-sectional view taken along line A-A of
・Rear end. S...Open end, 6...Nozzle part, 7...Engine Fig. 7 Fig. 5 Fig. 4
Claims (1)
後端Ｓを集合して単一な後管に接続した排気管に於いて
、前記＠管の後端部を先細に絞ったノズル部としたこと
全特徴とする多気筒エンジン用排気管。In an exhaust pipe in which the rear ends S of a plurality of +n pipes whose front ends are respectively connected to the cylinder side of the engine are connected to a single rear pipe, a nozzle part is formed by narrowing the rear end of the @ pipe into a tapered part. Exhaust pipe for multi-cylinder engines with all the features.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58140819A JPS6032931A (en) | 1983-08-01 | 1983-08-01 | Exhaust pipe for multi-cylinder engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58140819A JPS6032931A (en) | 1983-08-01 | 1983-08-01 | Exhaust pipe for multi-cylinder engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6032931A true JPS6032931A (en) | 1985-02-20 |
| JPH0129971B2 JPH0129971B2 (en) | 1989-06-15 |
Family
ID=15277456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58140819A Granted JPS6032931A (en) | 1983-08-01 | 1983-08-01 | Exhaust pipe for multi-cylinder engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6032931A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6299629A (en) * | 1985-10-25 | 1987-05-09 | Yamaha Motor Co Ltd | Exhaust device for motorcycle |
| JPS62143019U (en) * | 1986-03-03 | 1987-09-09 | ||
| JPS63299436A (en) * | 1987-03-03 | 1988-12-06 | ジヤン−ルイ・コナン | Apparatus for forming handfree function of telephone by coupling gain switching and echo erasing function |
| JPH01152027U (en) * | 1988-04-13 | 1989-10-19 | ||
| JPH0281928A (en) * | 1988-09-20 | 1990-03-22 | Yoshiaki Tsunoda | Forced intake method in internal combustion engine |
| JP2007032480A (en) * | 2005-07-28 | 2007-02-08 | Honda Motor Co Ltd | Exhaust device for motorcycle multicylinder engine |
| JP2013032713A (en) * | 2011-08-01 | 2013-02-14 | Mazda Motor Corp | Multi-cylinder engine |
| JP2013104355A (en) * | 2011-11-14 | 2013-05-30 | Mazda Motor Corp | Exhaust device for multicylinder engine |
-
1983
- 1983-08-01 JP JP58140819A patent/JPS6032931A/en active Granted
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6299629A (en) * | 1985-10-25 | 1987-05-09 | Yamaha Motor Co Ltd | Exhaust device for motorcycle |
| JPS62143019U (en) * | 1986-03-03 | 1987-09-09 | ||
| JPS63299436A (en) * | 1987-03-03 | 1988-12-06 | ジヤン−ルイ・コナン | Apparatus for forming handfree function of telephone by coupling gain switching and echo erasing function |
| JPH01152027U (en) * | 1988-04-13 | 1989-10-19 | ||
| JPH0281928A (en) * | 1988-09-20 | 1990-03-22 | Yoshiaki Tsunoda | Forced intake method in internal combustion engine |
| JP2007032480A (en) * | 2005-07-28 | 2007-02-08 | Honda Motor Co Ltd | Exhaust device for motorcycle multicylinder engine |
| JP4512006B2 (en) * | 2005-07-28 | 2010-07-28 | 本田技研工業株式会社 | Exhaust device for V-type multi-cylinder engine in motorcycle |
| JP2013032713A (en) * | 2011-08-01 | 2013-02-14 | Mazda Motor Corp | Multi-cylinder engine |
| JP2013104355A (en) * | 2011-11-14 | 2013-05-30 | Mazda Motor Corp | Exhaust device for multicylinder engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0129971B2 (en) | 1989-06-15 |
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