JPH01114970U - - Google Patents
Info
- Publication number
- JPH01114970U JPH01114970U JP992388U JP992388U JPH01114970U JP H01114970 U JPH01114970 U JP H01114970U JP 992388 U JP992388 U JP 992388U JP 992388 U JP992388 U JP 992388U JP H01114970 U JPH01114970 U JP H01114970U
- Authority
- JP
- Japan
- Prior art keywords
- sound pressure
- volume
- resonator
- frequency
- noise
- 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 1
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Description
図は本考案実施例の車室内騒音低減装置の構成
図。
１：エンジン、４：吸気管、５：空気共鳴管、
８：アクチユエータ、１１：第１音圧検知器、１
２：第２音圧検知器、１４：コントローラ。
The figure is a configuration diagram of a vehicle interior noise reduction device according to an embodiment of the present invention. 1: Engine, 4: Intake pipe, 5: Air resonance pipe,
8: Actuator, 11: First sound pressure detector, 1
2: Second sound pressure detector, 14: Controller.
Claims (1)
騒音を検出する第１音圧検知器と、車室内に配置
され車室内騒音を検出する第２音圧検知器と、前
記吸気管の側方にこの吸気管に連通して設けられ
容積を変更可能に構成された空気共鳴器と、前記
共鳴器の容積を変更するアクチユエータと、前記
第１及び第２音圧検知器により検出された騒音の
周波数を分析して第２音圧検知器における最大音
圧を有する周波数を検出しその最大音圧周波数に
等しい共鳴周波数を有する前記共鳴器の容積を算
出してその容積が前記共鳴器の容積となるように
前記アクチユエータを制御するコントローラとを
備えた車室内騒音低減装置。 A first sound pressure detector is placed near the intake port of the engine intake pipe and detects intake noise; a second sound pressure detector is placed inside the vehicle interior and detects cabin noise; an air resonator connected to the intake pipe and configured to be able to change its volume; an actuator that changes the volume of the resonator; and the frequency of the noise detected by the first and second sound pressure detectors. is analyzed to detect the frequency with the maximum sound pressure in the second sound pressure detector, calculate the volume of the resonator having a resonance frequency equal to the maximum sound pressure frequency, and the volume becomes the volume of the resonator. A vehicle interior noise reduction device comprising: a controller for controlling the actuator;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP992388U JPH01114970U (en) | 1988-01-28 | 1988-01-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP992388U JPH01114970U (en) | 1988-01-28 | 1988-01-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01114970U true JPH01114970U (en) | 1989-08-02 |
Family
ID=31217097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP992388U Pending JPH01114970U (en) | 1988-01-28 | 1988-01-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01114970U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5970868A (en) * | 1982-10-15 | 1984-04-21 | Nippon Denso Co Ltd | Variable volume resonant muffler system |
| JPS6216539B2 (en) * | 1981-03-11 | 1987-04-13 | Fujitsu Ltd |
-
1988
- 1988-01-28 JP JP992388U patent/JPH01114970U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6216539B2 (en) * | 1981-03-11 | 1987-04-13 | Fujitsu Ltd | |
| JPS5970868A (en) * | 1982-10-15 | 1984-04-21 | Nippon Denso Co Ltd | Variable volume resonant muffler system |