JPS6057723U - Automotive engine exhaust pipe system - Google Patents
Automotive engine exhaust pipe systemInfo
- Publication number
- JPS6057723U JPS6057723U JP8795683U JP8795683U JPS6057723U JP S6057723 U JPS6057723 U JP S6057723U JP 8795683 U JP8795683 U JP 8795683U JP 8795683 U JP8795683 U JP 8795683U JP S6057723 U JPS6057723 U JP S6057723U
- Authority
- JP
- Japan
- Prior art keywords
- exhaust pipe
- pipe system
- muffler
- engine exhaust
- automotive engine
- 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.)
- Pending
Links
Landscapes
- Exhaust Silencers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は、従来の自動車用エンジンの排気管系を示す概
略側面図、第２図は、同じくブリマフラーの縦断面図、
第３区は、この考案の第一実施例の排気管系を示す概略
側面図、第４図は、同じくブリマフラーの縦断面図、第
５図は、定在波の音圧モードの説明図、第６図は、共鳴
要素を有するブリマフラーの取付位置によ“る排気騒音
特性のグラフ、第７図は、触媒容積の影響による共振周
波数のグラフ、第８図は、共鳴要素の頚管の吸音材によ
る排気騒音の差異を示すグラフ、第９図は、第二実施例
のブリマフラーの縦断面図、第１０図は、高次、低次の
定在波の音圧モードの関係を示す説明図、第１１図は、
この考案の消音効果を示すグラフである。
。
Ｅ・・・・・・エンジン、２・・・・・・エキゾースト
マニフオールド、２ａ・・・・・・集合部、７・・・・
・・メインマフラー、１１．２１・・・・・・排気管系
、１５．２５・・・・・・ブリマフラー、１５ｇ、２５
ｇ・・・・・・頚管、１５１゜２５ｉ・・・・・・吸音
材、４Ｌ・・・・・・集合部とメインマフラー間の長さ
、λ・・・・・・波長、ｆ・・・・・・共鳴周波数、α
・・・・・・修正係数。
（Ｈ，ｚ） １
第９図
ェシジ本朝憇（ｒｐ−ｍ、）FIG. 1 is a schematic side view showing the exhaust pipe system of a conventional automobile engine, and FIG. 2 is a vertical cross-sectional view of a rear muffler.
Section 3 is a schematic side view showing the exhaust pipe system of the first embodiment of this invention, FIG. 4 is a vertical cross-sectional view of the same brim muffler, and FIG. 5 is an explanatory diagram of the sound pressure mode of a standing wave. , Fig. 6 is a graph of exhaust noise characteristics depending on the mounting position of a bridge muffler having a resonant element, Fig. 7 is a graph of resonant frequency due to the influence of catalyst volume, and Fig. 8 is a graph of the cervical pipe of the resonant element. 9 is a longitudinal cross-sectional view of the brim muffler of the second embodiment, and FIG. 10 is a graph showing the relationship between sound pressure modes of high-order and low-order standing waves. The explanatory diagram shown in FIG. 11 is
It is a graph showing the silencing effect of this invention.
. E...Engine, 2...Exhaust manifold, 2a...Collection part, 7...
...Main muffler, 11.21...Exhaust pipe system, 15.25...Brief muffler, 15g, 25
g...Cervical tube, 151°25i...Sound absorbing material, 4L...Length between gathering part and main muffler, λ...Wavelength, f. ...Resonance frequency, α
・・・・・・Correction coefficient. (H, z) 1 Figure 9 Jeshiji Honchoaki (rp-m, )
Claims (1)
ーまでの長さをＬとするとき、頚管内面に多孔質金属の
吸音材を装着し、かつ、αの値を１〜１．１５として共
鳴周波数を波長に換算して、４／３Ｌ・αとした共鳴要
素を有するブリマフラーを、その頚管入口がメインマフ
ラーから１／３Ｌ・αになるような上流の位置に設置し
たことを特徴とする自動車用エンジンの排気管系。When the length from the gathering part of the exhaust manifold to the main muffler is L, a porous metal sound absorbing material is attached to the inner surface of the cervical canal, and the value of α is 1 to 1.15, and the resonant frequency is set to the wavelength. An automobile engine characterized in that a bridge muffler having a resonance element of 4/3 L.alpha. is installed at an upstream position such that its cervical canal inlet is 1/3 L.alpha. from the main muffler. exhaust pipe system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8795683U JPS6057723U (en) | 1983-06-10 | 1983-06-10 | Automotive engine exhaust pipe system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8795683U JPS6057723U (en) | 1983-06-10 | 1983-06-10 | Automotive engine exhaust pipe system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6057723U true JPS6057723U (en) | 1985-04-22 |
Family
ID=30217870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8795683U Pending JPS6057723U (en) | 1983-06-10 | 1983-06-10 | Automotive engine exhaust pipe system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6057723U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0264712U (en) * | 1988-11-02 | 1990-05-15 |
-
1983
- 1983-06-10 JP JP8795683U patent/JPS6057723U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0264712U (en) * | 1988-11-02 | 1990-05-15 |
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