JPS61123881U - - Google Patents
Info
- Publication number
- JPS61123881U JPS61123881U JP691485U JP691485U JPS61123881U JP S61123881 U JPS61123881 U JP S61123881U JP 691485 U JP691485 U JP 691485U JP 691485 U JP691485 U JP 691485U JP S61123881 U JPS61123881 U JP S61123881U
- Authority
- JP
- Japan
- Prior art keywords
- coil
- engine
- charging
- auxiliary
- voltage
- 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
- 239000003990 capacitor Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 5
- 238000010248 power generation Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
- Electrical Control Of Ignition Timing (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Description
第１図は本考案の一実施例に係る点火装置を示
す回路図、第２図はこの点火装置の遅角特性を示
すグラフ、第３図はエンジンの回転数が低い場合
の点火動作を示す波形図、第４図はエンジンの回
転数が高くなつた場合の点火動作を示す波形図、
第５図は従来のエンジンの点火装置の回路図、第
６図はこの点火装置のエキサイタコイルの出力波
形を示す波形図、第７図は同拡大図、第８図は従
来の点火装置の特性を示すグラフである。
なお図面に用いた符号において、３０……エキ
サイタコイル、３２……充放電用コンデンサ、３
３……主サイリスタ、３５……点火コイル、３６
……一次コイル、３７……二次コイル、４０……
補助サイリスタ、４１……コンデンサ、５２……
遅角用サイリスタ、５４……コンデンサである。
Fig. 1 is a circuit diagram showing an ignition system according to an embodiment of the present invention, Fig. 2 is a graph showing the retardation characteristics of this ignition system, and Fig. 3 shows ignition operation when the engine speed is low. Waveform diagram, Figure 4 is a waveform diagram showing the ignition operation when the engine speed increases,
Figure 5 is a circuit diagram of a conventional engine ignition system, Figure 6 is a waveform diagram showing the output waveform of the exciter coil of this ignition system, Figure 7 is an enlarged view of the same, and Figure 8 is the characteristics of a conventional ignition system. This is a graph showing. In addition, in the symbols used in the drawings, 30...exciter coil, 32...charging/discharging capacitor, 3
3... Main thyristor, 35... Ignition coil, 36
...Primary coil, 37...Secondary coil, 40...
Auxiliary thyristor, 41... Capacitor, 52...
Retard thyristor 54 is a capacitor.
Claims (1)
キサイタコイルの正方向の電圧で充放電用コンデ
ンサを充電し、前記磁石発電機のエキサイタコイ
ルの負方向の電圧で主サイリスタを導通させて前
記充放電用コンデンサの電荷を点火コイルの一次
コイルに放電し、同二次コイルに高電圧を発生さ
せてエンジンを点火するようにした点火装置であ
つて、前記磁石発電機に補発電コイルを設けると
ともに、前記充放電用コンデンサを充電する前記
エキサイタコイルの正方向の電圧の発生後に前記
補発電コイルの出力電圧で所定時間導通する補助
サイリスタを前記主サイリスタのゲート・カソー
ド間に設け、この補助サイリスタによつて前記充
放電用コンデンサの充電直後の前記エキサイタコ
イルの負方向の電圧を側路するとともに、このエ
キサイタコイルのつぎのサイクルの最初の負方向
の電圧で前記主サイリスタを導通させるようにし
たエンジンの点火装置において、前記補助サイリ
スタと並列にスイツチング素子を接続するととも
に、このスイツチング素子の制御電極に前記補発
電コイルによつて得られる前記エンジンの回転数
に応じた電圧を供給し、このスイツチング素子に
よつて前記エンジンの回転数に応じて前記主サイ
リスタのゲート電流の一部を側路するようにした
ことを特徴とするエンジンの点火装置。 A charging/discharging capacitor is charged with the positive voltage of the exciter coil of the magnet generator driven in synchronization with the engine, and the main thyristor is made conductive with the negative voltage of the exciter coil of the magnet generator, thereby charging/discharging. The ignition device discharges the electric charge of the storage capacitor to the primary coil of the ignition coil and generates a high voltage in the secondary coil to ignite the engine, the magnet generator being provided with an auxiliary generation coil, An auxiliary thyristor is provided between the gate and cathode of the main thyristor, which conducts for a predetermined period of time with the output voltage of the auxiliary power generation coil after generation of a positive voltage of the exciter coil that charges the charging/discharging capacitor. In this engine, the negative voltage of the exciter coil immediately after charging of the charging/discharging capacitor is bypassed, and the main thyristor is made conductive by the first negative voltage of the exciter coil in the next cycle. In the ignition device, a switching element is connected in parallel with the auxiliary thyristor, and a voltage corresponding to the rotational speed of the engine obtained by the auxiliary generator coil is supplied to the control electrode of the switching element. Therefore, an ignition device for an engine is characterized in that a part of the gate current of the main thyristor is bypassed depending on the rotational speed of the engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985006914U JPH048314Y2 (en) | 1985-01-22 | 1985-01-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985006914U JPH048314Y2 (en) | 1985-01-22 | 1985-01-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61123881U true JPS61123881U (en) | 1986-08-04 |
| JPH048314Y2 JPH048314Y2 (en) | 1992-03-03 |
Family
ID=30484791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985006914U Expired JPH048314Y2 (en) | 1985-01-22 | 1985-01-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH048314Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5979564U (en) * | 1982-11-19 | 1984-05-29 | 追浜工業株式会社 | Internal combustion engine overspeed prevention device |
| JPS59107060U (en) * | 1983-01-06 | 1984-07-19 | 澤藤電機株式会社 | Engine non-contact ignition device |
-
1985
- 1985-01-22 JP JP1985006914U patent/JPH048314Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5979564U (en) * | 1982-11-19 | 1984-05-29 | 追浜工業株式会社 | Internal combustion engine overspeed prevention device |
| JPS59107060U (en) * | 1983-01-06 | 1984-07-19 | 澤藤電機株式会社 | Engine non-contact ignition device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH048314Y2 (en) | 1992-03-03 |
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