JPH0321545U - - Google Patents
Info
- Publication number
- JPH0321545U JPH0321545U JP8077389U JP8077389U JPH0321545U JP H0321545 U JPH0321545 U JP H0321545U JP 8077389 U JP8077389 U JP 8077389U JP 8077389 U JP8077389 U JP 8077389U JP H0321545 U JPH0321545 U JP H0321545U
- Authority
- JP
- Japan
- Prior art keywords
- knock
- rotational speed
- integrating circuit
- engine
- signal
- 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
- 238000001514 detection method Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の構成を示す機能ブロツク図、
第２図は本考案の一実施例を示すシステム図、第
３図及び第４図は制御内容を示すフローチヤート
である。
１……機関、２……ノツクセンサ、３……バン
ドパスフイルタ、４……積分回路、６……マイク
ロコンピユータ、７……点火栓、８……クランク
角センサ。
Figure 1 is a functional block diagram showing the configuration of the present invention.
FIG. 2 is a system diagram showing an embodiment of the present invention, and FIGS. 3 and 4 are flowcharts showing control contents. 1... Engine, 2... Knob sensor, 3... Band pass filter, 4... Integrating circuit, 6... Microcomputer, 7... Spark plug, 8... Crank angle sensor.
Claims (1)
ンサと、 このノツクセンサからの信号のうちノツク振動
に対応する周波数成分を通過させるバンドパスフ
イルタと、 このバンドパスフイルタを通過した信号を所定
のクランク角区間において積分する積分回路と、 この積分回路の積分値に基づいてノツク・レベ
ルを判定するノツク・レベル判定手段と、 を有するノツク検出装置において、 機関の回転数を検出する機関回転数検出手段と
、 検出された機関の回転数に応じて前記積分回路
により積分する前記クランク角区間を変更する積
分区間可変手段と、 を設けたことを特徴とするノツク検出装置。[Scope of Claim for Utility Model Registration] A knock sensor that outputs a signal corresponding to engine vibration; A bandpass filter that passes the frequency component corresponding to the knock vibration of the signal from the knock sensor; A knock detection device detects the rotational speed of an engine, comprising: an integrating circuit that integrates a signal in a predetermined crank angle interval; and knock level determining means that determines a knock level based on the integral value of the integrating circuit. A knock detection device comprising: engine rotational speed detection means; and integral interval variable means for changing the crank angle interval integrated by the integrating circuit in accordance with the detected engine rotational speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989080773U JPH0645645Y2 (en) | 1989-07-11 | 1989-07-11 | Knock detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989080773U JPH0645645Y2 (en) | 1989-07-11 | 1989-07-11 | Knock detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0321545U true JPH0321545U (en) | 1991-03-04 |
| JPH0645645Y2 JPH0645645Y2 (en) | 1994-11-24 |
Family
ID=31626120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989080773U Expired - Lifetime JPH0645645Y2 (en) | 1989-07-11 | 1989-07-11 | Knock detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0645645Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63189672A (en) * | 1987-01-31 | 1988-08-05 | Mazda Motor Corp | Knocking detecting device for engine |
-
1989
- 1989-07-11 JP JP1989080773U patent/JPH0645645Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63189672A (en) * | 1987-01-31 | 1988-08-05 | Mazda Motor Corp | Knocking detecting device for engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0645645Y2 (en) | 1994-11-24 |
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