JPS60131866U - Diesel engine tachometer - Google Patents
Diesel engine tachometerInfo
- Publication number
- JPS60131866U JPS60131866U JP1747084U JP1747084U JPS60131866U JP S60131866 U JPS60131866 U JP S60131866U JP 1747084 U JP1747084 U JP 1747084U JP 1747084 U JP1747084 U JP 1747084U JP S60131866 U JPS60131866 U JP S60131866U
- Authority
- JP
- Japan
- Prior art keywords
- injection signal
- fuel injection
- diesel engine
- engine tachometer
- cylinder
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は、ディーゼルエンジンの回転計の従来例を示す
ブロック図、第２図は、第１図における要部の信号波形
図、第３図は、この考案に基づく振動センサの取り付は
位置の説明に供するディーゼルエンジンにおける燃料噴
射系の模式図、第４図は、この考案の一実施例を示すブ
遁ツク図、第５図は、第４図における各部の信号波形図
である。
２・・・振動センサ、３・・・増幅器、４・・・フィル
タ、（７・・・タイマ、８・・・マイクロコンピュータ
）演算手段、９・・・表示器、１０・・・ディーゼルエ
ンジン、１１〜１６・・・燃料噴射ノズル、１７・・・
燃料噴射ポンプ１．１９・・・スピルチューブ、（２ｏ
・・・第１の比較器、２１・・・充放電時定数回路、２
２・・・第２の比較器、２３・・・波形整形回路、２４
・・・カウンタ）噴射信号形成手段。Fig. 1 is a block diagram showing a conventional example of a diesel engine tachometer, Fig. 2 is a signal waveform diagram of the main parts in Fig. 1, and Fig. 3 shows the mounting position of the vibration sensor based on this invention. FIG. 4 is a block diagram showing an embodiment of this invention, and FIG. 5 is a signal waveform diagram of each part in FIG. 4. 2... Vibration sensor, 3... Amplifier, 4... Filter, (7... Timer, 8... Microcomputer) calculation means, 9... Display, 10... Diesel engine, 11-16...Fuel injection nozzle, 17...
Fuel injection pump 1.19... Spill tube, (2o
...first comparator, 21...charging/discharging time constant circuit, 2
2... Second comparator, 23... Waveform shaping circuit, 24
...counter) injection signal forming means.
Claims (1)
な燃料を、燃料噴射ポンプへ返送する径路としてのスピ
ルチューブの全長の略中央付近に取り付けた振動検出器
と、この振動検出器の出力が予め定めた基準スライスレ
ベル以上の時に各気筒毎の燃料噴射信号を形成する噴射
信号形成手段と、この噴射信号形成手段からの燃料噴射
信号に基づいてエンジン回転数を演算する演算手段とに
よって構成したことを特徴とするディーゼルエンジンの
回転計。A vibration detector is installed near the center of the entire length of the spill tube, which serves as a path for returning excess fuel that is not injected into the cylinder and remains in the fuel injection nozzle to the fuel injection pump, and the output of this vibration detector. The injection signal forming means forms a fuel injection signal for each cylinder when the injection signal is equal to or higher than a predetermined reference slice level, and the calculating means calculates the engine rotation speed based on the fuel injection signal from the injection signal forming means. Diesel engine tachometer featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1747084U JPS60131866U (en) | 1984-02-13 | 1984-02-13 | Diesel engine tachometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1747084U JPS60131866U (en) | 1984-02-13 | 1984-02-13 | Diesel engine tachometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60131866U true JPS60131866U (en) | 1985-09-03 |
| JPH0244215Y2 JPH0244215Y2 (en) | 1990-11-22 |
Family
ID=30505201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1747084U Granted JPS60131866U (en) | 1984-02-13 | 1984-02-13 | Diesel engine tachometer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60131866U (en) |
-
1984
- 1984-02-13 JP JP1747084U patent/JPS60131866U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0244215Y2 (en) | 1990-11-22 |
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