JPS6382022U - - Google Patents
Info
- Publication number
- JPS6382022U JPS6382022U JP17650186U JP17650186U JPS6382022U JP S6382022 U JPS6382022 U JP S6382022U JP 17650186 U JP17650186 U JP 17650186U JP 17650186 U JP17650186 U JP 17650186U JP S6382022 U JPS6382022 U JP S6382022U
- Authority
- JP
- Japan
- Prior art keywords
- exhaust
- discharge port
- noise reduction
- during deceleration
- node
- 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
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Exhaust Silencers (AREA)
Description
第１図はこの考案に係る排気騒音低減装置の一
実施例を示す構成説明図、第２図はその消音バル
ブ部分の斜視図、第３図は第２図の―線に沿
つた断面図、第４図はこの実施例の減速時におけ
る騒音特性を従来のものと比較して示す特性図、
第５図は従来の排気系を概略的に示す平面図、第
６図はＡ，Ｂ，Ｃはこの排気系内で生じる共鳴振
動の音圧モードを示す説明図である。
１……エンジン、４……排気管、５……吐出口
、１２……消音バルブ、１９……電磁アクチユエ
ータ、２０……コントロールユニツト、２１……
スロツトルセンサ。
FIG. 1 is a configuration explanatory diagram showing an embodiment of the exhaust noise reduction device according to this invention, FIG. 2 is a perspective view of the muffling valve portion thereof, and FIG. 3 is a sectional view taken along the line - in FIG. 2. FIG. 4 is a characteristic diagram showing the noise characteristics of this embodiment during deceleration in comparison with the conventional one.
FIG. 5 is a plan view schematically showing a conventional exhaust system, and FIG. 6 is an explanatory diagram showing sound pressure modes of resonance vibrations occurring within this exhaust system. DESCRIPTION OF SYMBOLS 1... Engine, 4... Exhaust pipe, 5... Discharge port, 12... Silence valve, 19... Electromagnetic actuator, 20... Control unit, 21...
Throttle sensor.
Claims (1)
る共鳴振動の節となる位置において、排気管内に
、減速時に作動して通路面積を絞る絞り機構を設
けたことを特徴とする自動車用エンジンの排気騒
音低減装置。 Exhaust noise reduction for an automobile engine, characterized in that a throttling mechanism is provided in the exhaust pipe to reduce the passage area by operating during deceleration, at the node of resonance vibration generated in the exhaust system from the exhaust manifold to the discharge port. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17650186U JPS6382022U (en) | 1986-11-17 | 1986-11-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17650186U JPS6382022U (en) | 1986-11-17 | 1986-11-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6382022U true JPS6382022U (en) | 1988-05-30 |
Family
ID=31116804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17650186U Pending JPS6382022U (en) | 1986-11-17 | 1986-11-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6382022U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015165097A (en) * | 2014-02-28 | 2015-09-17 | トヨタ自動車株式会社 | Exhaust system of engine |
-
1986
- 1986-11-17 JP JP17650186U patent/JPS6382022U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015165097A (en) * | 2014-02-28 | 2015-09-17 | トヨタ自動車株式会社 | Exhaust system of engine |
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