JPS6344133U - - Google Patents
Info
- Publication number
- JPS6344133U JPS6344133U JP13829086U JP13829086U JPS6344133U JP S6344133 U JPS6344133 U JP S6344133U JP 13829086 U JP13829086 U JP 13829086U JP 13829086 U JP13829086 U JP 13829086U JP S6344133 U JPS6344133 U JP S6344133U
- Authority
- JP
- Japan
- Prior art keywords
- switching
- cylinder pressure
- stage amplifier
- signal
- frequency characteristics
- 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 10
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
- Testing Of Engines (AREA)
Description
第１図は本考案の基本概念図、第２図は本考案
に係る筒内圧センサ信号処理装置の一実施例を示
す回路構成図、第３図Ａ，Ｂは従来の筒内圧入力
回路を説明するための一般的な入力回路を示す図
であり、第３図Ａはその回路構成図、第３図Ｂは
その周波数特性を示すグラフ、第４図〜第７図は
従来の実用的筒内入力回路を示す図であり、第４
図Ａはその一例を示す回路構成図、第４図Ｂはそ
の周波数特性を示すグラフ、第５図Ａはその他の
例を示す回路構成図、第５図Ｂはその周波数特性
を示すグラフ、第６図ａ〜ｄは各出力波形を示す
波形図、第７図は第３図Ａおよび第４図Ａ（また
は第５図Ａ）に示す各増幅器の周波数特性をそれ
ぞれ示すグラフ、第８〜１１図は先願に係る筒内
圧入力回路の一実施例を示す図であり、第８図は
その回路構成図、第９図はその初段増幅器の周波
数特性を示すグラフ、第１０図はその次段増幅器
の周波数特性を示すグラフ、第１１図はその２つ
の増幅器全体の周波数特性を示すグラフ、第１２
図は先願および本考案に係る筒内圧入力回路の作
用を説明するための波形図である。
２１ａ〜２１ｆ……筒内圧センサ、２２ａ〜２
２ｆ……初段アンプ、２３……マルチプレクサ（
切換手段）、２５……次段アンプ、２７，２８…
…アナログスイツチ（初期化手段）、２９……切
換信号発生手段。
Fig. 1 is a basic conceptual diagram of the present invention, Fig. 2 is a circuit configuration diagram showing an embodiment of the cylinder pressure sensor signal processing device according to the present invention, and Figs. 3A and B illustrate a conventional cylinder pressure input circuit. Fig. 3A is a diagram showing the circuit configuration, Fig. 3B is a graph showing its frequency characteristics, and Figs. 4 to 7 are diagrams showing the conventional practical cylinder interior. It is a diagram showing an input circuit, and a fourth
Figure A is a circuit configuration diagram showing one example, Figure 4B is a graph showing its frequency characteristics, Figure 5A is a circuit configuration diagram showing another example, Figure 5B is a graph showing its frequency characteristics, and Figure 5B is a graph showing its frequency characteristics. Figures 6 a to d are waveform diagrams showing each output waveform, Figure 7 is a graph showing the frequency characteristics of each amplifier shown in Figure 3 A and Figure 4 A (or Figure 5 A), and Figures 8 to 11 are waveform diagrams showing each output waveform. The figures show an example of the in-cylinder pressure input circuit according to the prior application, in which Fig. 8 is a diagram of its circuit configuration, Fig. 9 is a graph showing the frequency characteristics of its first stage amplifier, and Fig. 10 is a graph showing the frequency characteristics of its first stage amplifier. A graph showing the frequency characteristics of the amplifier, Fig. 11 is a graph showing the frequency characteristics of the two amplifiers as a whole, and Fig. 12 is a graph showing the frequency characteristics of the two amplifiers as a whole.
The figure is a waveform chart for explaining the operation of the cylinder pressure input circuit according to the prior application and the present invention. 21a to 21f... Cylinder pressure sensor, 22a to 2
2f...first stage amplifier, 23...multiplexer (
switching means), 25... next stage amplifier, 27, 28...
...Analog switch (initialization means), 29...Switching signal generation means.
Claims (1)
る複数の筒内圧センサと、 (b) 各筒内圧センサに対応して設けられ、低周
波遮断特性を有する複数の初段アンプと、 (c) 各初段アンプからの信号が入力され、切換
信号が入力される毎に初段アンプの信号を切り換
えて出力する切換手段と、 (d) 切換手段により切り換えられた初段アンプ
の出力のうち所定周波数域の信号を増幅して筒内
圧に対応する電圧信号を出力する次段アンプと、 (e) 切換手段の切換タイミングに追随して少な
くとも次段アンプの電圧信号を初期化する初期化
手段と、 (f) 所定の切換タイミング毎に前記切換信号を
出力する切換信号発生手段と、 を備えたことを特徴とする筒内圧センサ信号処理
装置。[Claims for Utility Model Registration] (a) A plurality of cylinder pressure sensors that generate signals corresponding to the cylinder pressure of the engine; (b) A plurality of cylinder pressure sensors that are provided corresponding to each cylinder pressure sensor and that have low frequency cutoff characteristics. (c) a switching means that receives signals from each first-stage amplifier and switches and outputs the signal of the first-stage amplifier each time a switching signal is input; and (d) a first-stage amplifier switched by the switching means. (e) initializes the voltage signal of at least the next stage amplifier in accordance with the switching timing of the switching means; (f) switching signal generating means for outputting the switching signal at each predetermined switching timing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13829086U JPS6344133U (en) | 1986-09-08 | 1986-09-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13829086U JPS6344133U (en) | 1986-09-08 | 1986-09-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6344133U true JPS6344133U (en) | 1988-03-24 |
Family
ID=31043133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13829086U Pending JPS6344133U (en) | 1986-09-08 | 1986-09-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6344133U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02303568A (en) * | 1989-05-18 | 1990-12-17 | Maruyama Mfg Co Ltd | Method and device for spraying chemical for self-traveling type chemical spraying vehicle |
| WO2004094807A1 (en) * | 2003-04-21 | 2004-11-04 | Fuji Jukogyo Kabushiki Kaisha | Combustion pressure data-collecting system for multi-cylinder engine |
| JP2016156296A (en) * | 2015-02-23 | 2016-09-01 | 株式会社デンソー | Electronic control device for internal combustion engine |
-
1986
- 1986-09-08 JP JP13829086U patent/JPS6344133U/ja active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02303568A (en) * | 1989-05-18 | 1990-12-17 | Maruyama Mfg Co Ltd | Method and device for spraying chemical for self-traveling type chemical spraying vehicle |
| WO2004094807A1 (en) * | 2003-04-21 | 2004-11-04 | Fuji Jukogyo Kabushiki Kaisha | Combustion pressure data-collecting system for multi-cylinder engine |
| US7062955B2 (en) | 2003-04-21 | 2006-06-20 | Fuji Jukogyo Kabushiki Kaisha | Combustion-pressure-data acquisition system of multi-cylinder engine |
| JP2016156296A (en) * | 2015-02-23 | 2016-09-01 | 株式会社デンソー | Electronic control device for internal combustion engine |
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