JPH0231320U - - Google Patents
Info
- Publication number
- JPH0231320U JPH0231320U JP10841388U JP10841388U JPH0231320U JP H0231320 U JPH0231320 U JP H0231320U JP 10841388 U JP10841388 U JP 10841388U JP 10841388 U JP10841388 U JP 10841388U JP H0231320 U JPH0231320 U JP H0231320U
- Authority
- JP
- Japan
- Prior art keywords
- rear end
- pipe
- conduit
- communicating
- muffler
- 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
- 230000009977 dual effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Exhaust Silencers (AREA)
Description
第１図は本考案に係るデユアルモードマフラの
一実施例を示す断面図、第２図は第１図に示すデ
ユアルモードマフラの高速域における状態を示す
図、第３図はエンジン回転速度―音圧レベル・圧
力損失の関係を示す特性図である。
１…デユアルモードマフラ、２…マフラ本体、
３〜５…室、８…排気導入管、９，１３，１４…
導管、１０…排気導出管、１５…切換バルブ、１
６…弁体、１７…リンク、２０…制御装置、２１
…アクチユエータ、２２…制御回路。
Fig. 1 is a sectional view showing an embodiment of the dual mode muffler according to the present invention, Fig. 2 is a diagram showing the state of the dual mode muffler shown in Fig. 1 in a high speed range, and Fig. 3 is a diagram showing engine rotation speed - noise. FIG. 3 is a characteristic diagram showing the relationship between pressure level and pressure loss. 1...Dual mode muffler, 2...Muffler body,
3-5...chamber, 8...exhaust introduction pipe, 9, 13, 14...
Conduit, 10...Exhaust outlet pipe, 15...Switching valve, 1
6... Valve body, 17... Link, 20... Control device, 21
...actuator, 22...control circuit.
Claims (1)
二重構造とし、外側導管の後端を拡張室に連通さ
せると共に当該外側導管と内側導管とを前端にお
いて連通させ、後端に何れか一方の導管の後端を
選択的に開閉する切換バルブを設け、エンジンの
低速域において外側導管の後端を閉塞し、且つ内
側導管の後端を開口して排気導出管の長さを増大
し、高速域において外側導管の後端を開口し、且
つ内側導管の後端を閉塞して排気導出管の長さを
短くすると共に、これらの外側導管と内側導管と
によりサイドブランチ管を形成することを特徴と
するデユアルモードマフラ。 The exhaust outlet pipe of the muffler has a double structure of an outer pipe and an inner pipe, with the rear end of the outer pipe communicating with the expansion chamber, the outer pipe and the inner pipe communicating with each other at the front end, and either one at the rear end communicating with the expansion chamber. A switching valve is provided to selectively open and close the rear end of the conduit, and the rear end of the outer conduit is closed at low speeds of the engine, and the rear end of the inner conduit is opened to increase the length of the exhaust pipe. The rear end of the outer conduit is opened in the region, and the rear end of the inner conduit is closed to shorten the length of the exhaust outlet pipe, and the outer conduit and the inner conduit form a side branch pipe. Dual mode muffler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10841388U JPH075217Y2 (en) | 1988-08-18 | 1988-08-18 | Dual mode muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10841388U JPH075217Y2 (en) | 1988-08-18 | 1988-08-18 | Dual mode muffler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0231320U true JPH0231320U (en) | 1990-02-27 |
| JPH075217Y2 JPH075217Y2 (en) | 1995-02-08 |
Family
ID=31343718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10841388U Expired - Lifetime JPH075217Y2 (en) | 1988-08-18 | 1988-08-18 | Dual mode muffler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH075217Y2 (en) |
-
1988
- 1988-08-18 JP JP10841388U patent/JPH075217Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH075217Y2 (en) | 1995-02-08 |