JPS6257718U - - Google Patents
Info
- Publication number
- JPS6257718U JPS6257718U JP14972785U JP14972785U JPS6257718U JP S6257718 U JPS6257718 U JP S6257718U JP 14972785 U JP14972785 U JP 14972785U JP 14972785 U JP14972785 U JP 14972785U JP S6257718 U JPS6257718 U JP S6257718U
- Authority
- JP
- Japan
- Prior art keywords
- internal combustion
- combustion engine
- control valve
- exhaust
- exhaust system
- 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
- 238000002485 combustion reaction Methods 0.000 claims 3
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Description
第１図は本考案の実施例を示す構成図、第２図
はＬｉｎ．―Ａとエンジン吸入量との関係を示す
グラフ、第３図はＬｉｎ．とＡ特性値との関係を
示す清音特性線図、第４図は本実施例に於ける動
作を示すフローチヤート、第５図は運輸省令第３
９号に基づく測定方法を示す説明図、第６図は従
来の装置を示す構成図である。
２１……エンジン、２５……プリマフラ、２６
……メインマフラ、２７，２８……排気管、２９
……制御弁、３０……コントローラ、３１……バ
ルブ駆動装置。
FIG. 1 is a configuration diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing the construction of an embodiment of the present invention. -A graph showing the relationship between A and engine intake amount, Figure 3 is Lin. Figure 4 is a flowchart showing the operation of this embodiment, Figure 5 is based on Ministry of Transport Ordinance 3.
FIG. 6 is an explanatory diagram showing a measuring method based on No. 9, and FIG. 6 is a configuration diagram showing a conventional device. 21...Engine, 25...Primary muffler, 26
...Main muffler, 27, 28...Exhaust pipe, 29
...Control valve, 30...Controller, 31...Valve drive device.
Claims (1)
音器を設けると共にこの消音器のテール側に複数
の排気管を連結し、且つ、複数の排気管の内の一
つに運転状態に応じて開閉する制御弁を設けた内
燃機関用排気装置に於て、排気系の実測騒音のＬ
ｉｎ．値とＡ特性値とのｄＢ換算差が、設定値以
上の時に制御弁を閉じ、設定値以下の時に制御弁
を開くようにした制御装置を設けたことを特徴と
する制御弁を設けた内燃機関用排気装置。 At least a muffler is provided in the exhaust path connected to the internal combustion engine, and a plurality of exhaust pipes are connected to the tail side of the muffler, and one of the plurality of exhaust pipes is controlled to open and close depending on the operating state. In an exhaust system for an internal combustion engine equipped with a valve, the actual noise L of the exhaust system
in. An internal combustion engine equipped with a control valve, characterized in that a control device is provided that closes the control valve when the dB conversion difference between the value and the A characteristic value is equal to or higher than a set value, and opens the control valve when the difference is equal to or lower than the set value. Engine exhaust system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14972785U JPH0430324Y2 (en) | 1985-09-30 | 1985-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14972785U JPH0430324Y2 (en) | 1985-09-30 | 1985-09-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6257718U true JPS6257718U (en) | 1987-04-10 |
| JPH0430324Y2 JPH0430324Y2 (en) | 1992-07-22 |
Family
ID=31065211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14972785U Expired JPH0430324Y2 (en) | 1985-09-30 | 1985-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0430324Y2 (en) |
-
1985
- 1985-09-30 JP JP14972785U patent/JPH0430324Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0430324Y2 (en) | 1992-07-22 |
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