JPH0327320U - - Google Patents
Info
- Publication number
- JPH0327320U JPH0327320U JP3937490U JP3937490U JPH0327320U JP H0327320 U JPH0327320 U JP H0327320U JP 3937490 U JP3937490 U JP 3937490U JP 3937490 U JP3937490 U JP 3937490U JP H0327320 U JPH0327320 U JP H0327320U
- Authority
- JP
- Japan
- Prior art keywords
- plate
- engine
- central part
- thin
- supporting bolt
- 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
- 239000002184 metal Substances 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims 1
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Description
第１図は本考案の一実施例を示す縦断面図、第
２図は実験結果のグラフである。
４……振動感知部材、５……金属薄板、６……
圧電素子、７……リング板。
FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, and FIG. 2 is a graph of experimental results. 4... Vibration sensing member, 5... Metal thin plate, 6...
Piezoelectric element, 7...Ring plate.
Claims (1)
、その共振周波数を機関のノツク振動周波数に略
一致させてなる振動感知部材を、機関取付用のケ
ース内に、前記金属薄板の中央に挿通した支持ボ
ルトにより、その中央部を支持してなるものにお
いて、前記薄板中央部の片面若しくは両面に、共
振周波数を調整するためのリング板を前記支持ボ
ルトに外嵌して密接させたことを特徴とする内燃
機関用圧電共振型ノツクセンサー。 A vibration sensing member made by integrally adhering an annular piezoelectric element to one surface of a thin metal plate and making its resonance frequency approximately match the knock vibration frequency of the engine is inserted into the center of the thin metal plate within a case for mounting the engine. The central part of the thin plate is supported by a supporting bolt, characterized in that a ring plate for adjusting the resonant frequency is fitted on one or both sides of the central part of the thin plate and is fitted closely onto the supporting bolt. A piezoelectric resonance type knock sensor for internal combustion engines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3937490U JPH0327320U (en) | 1990-04-12 | 1990-04-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3937490U JPH0327320U (en) | 1990-04-12 | 1990-04-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0327320U true JPH0327320U (en) | 1991-03-19 |
Family
ID=31548230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3937490U Pending JPH0327320U (en) | 1990-04-12 | 1990-04-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0327320U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5649925A (en) * | 1979-09-29 | 1981-05-06 | Nissan Motor Co Ltd | Vibration sensor |
| JPS5649926A (en) * | 1979-09-29 | 1981-05-06 | Nissan Motor Co Ltd | Vibration sensor |
-
1990
- 1990-04-12 JP JP3937490U patent/JPH0327320U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5649925A (en) * | 1979-09-29 | 1981-05-06 | Nissan Motor Co Ltd | Vibration sensor |
| JPS5649926A (en) * | 1979-09-29 | 1981-05-06 | Nissan Motor Co Ltd | Vibration sensor |