JPS63170U - - Google Patents
Info
- Publication number
- JPS63170U JPS63170U JP9370986U JP9370986U JPS63170U JP S63170 U JPS63170 U JP S63170U JP 9370986 U JP9370986 U JP 9370986U JP 9370986 U JP9370986 U JP 9370986U JP S63170 U JPS63170 U JP S63170U
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- thyristor
- engine
- positive voltage
- time constant
- 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
- 239000003990 capacitor Substances 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
Description
第１図は本考案一実施例を示す無接点点火装置
の電気回路図、第２図および第３図は同無接点点
火装置の動作を説明するための電圧波形図、第４
図は従来この種無接点点火装置の一例を示す電気
回路図である。
図中、２１はエキサイタコイル、２２ないし２
７はダイオード、２８は点火用コンデンサ、２９
は点火コイル、３０は一次コイル、３１は二次コ
イル、３２は点火プラグ、３３はサイリスタ、３
４，３５は抵抗、３６は時定数回路、３７はコン
デンサ、３８は可変抵抗である。
FIG. 1 is an electric circuit diagram of a non-contact ignition device showing an embodiment of the present invention, FIGS. 2 and 3 are voltage waveform diagrams for explaining the operation of the non-contact ignition device, and FIG.
The figure is an electric circuit diagram showing an example of a conventional non-contact ignition device of this type. In the figure, 21 is an exciter coil, 22 or 2
7 is a diode, 28 is an ignition capacitor, 29
is an ignition coil, 30 is a primary coil, 31 is a secondary coil, 32 is a spark plug, 33 is a thyristor, 3
4 and 35 are resistors, 36 is a time constant circuit, 37 is a capacitor, and 38 is a variable resistor.
Claims (1)
方向電圧により点火用コンデンサを充電し、この
正方向電圧の次に発生する負方向電圧でサイリス
タを導通させることにより前記点火用コンデンサ
の電荷を急激に点火コイルの一次コイルに放電し
、同二次コイルに発生した高電圧でエンジンを点
火するようにした装置において、前記サイリスタ
のゲートに時定数回路を接続し、この時定数回路
のコンデンサを前記正方向電圧の前に発生する負
方向電圧で充電するように構成し、前記エンジン
の回転数が所定値以上に上昇したときは、前記正
方向電圧が発生するまで、この時定数回路のコン
デンサの放電により前記サイリスタを導通状態に
保持するようにしてエンジンの過回転を防止する
ようにしたことを特徴とするエンジンの無接点点
火装置。 The ignition capacitor is charged by the positive voltage of a magnet generator driven in synchronization with the engine, and the negative voltage generated next to this positive voltage causes the thyristor to conduct, thereby rapidly reducing the charge in the ignition capacitor. In this device, a time constant circuit is connected to the gate of the thyristor, and a capacitor of the time constant circuit is connected to the capacitor of the thyristor. The configuration is such that charging is performed with a negative voltage generated before a positive voltage, and when the engine speed increases to a predetermined value or more, the capacitor of this time constant circuit is charged until the positive voltage is generated. A non-contact ignition device for an engine, characterized in that the thyristor is maintained in a conductive state by electric discharge to prevent over-speeding of the engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9370986U JPS63170U (en) | 1986-06-19 | 1986-06-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9370986U JPS63170U (en) | 1986-06-19 | 1986-06-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63170U true JPS63170U (en) | 1988-01-05 |
Family
ID=30956514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9370986U Pending JPS63170U (en) | 1986-06-19 | 1986-06-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63170U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55137355A (en) * | 1979-04-10 | 1980-10-27 | Mitsubishi Electric Corp | Engine igniter |
-
1986
- 1986-06-19 JP JP9370986U patent/JPS63170U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55137355A (en) * | 1979-04-10 | 1980-10-27 | Mitsubishi Electric Corp | Engine igniter |
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