JPH01125865U - - Google Patents
Info
- Publication number
- JPH01125865U JPH01125865U JP2109688U JP2109688U JPH01125865U JP H01125865 U JPH01125865 U JP H01125865U JP 2109688 U JP2109688 U JP 2109688U JP 2109688 U JP2109688 U JP 2109688U JP H01125865 U JPH01125865 U JP H01125865U
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- coil
- ignition
- switching element
- semiconductor switching
- 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 13
- 239000004065 semiconductor Substances 0.000 claims 4
- 238000010248 power generation Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
- Electrical Control Of Ignition Timing (AREA)
Description
第１図は本考案の一実施例に係るコンデンサ放
電式点火装置の回路図、第２図は同波形図、第３
図はエンジンの回転数が低い場合における微分波
形のグラフ、第４図は同エンジンの回転数が高い
場合における微分波形のグラフ、第５図はステツ
プ進角の特性を示すグラフ、第６図は従来の点火
装置の回路図、第７図はコンデンサの電圧の変化
を示すグラフである。
なお図面に用いた符号において、２０……発電
コイル、２２……点火用コンデンサ、２３……点
火コイル、２４……１次コイル、２５……２次コ
イル、２６……点火プラグ、２７……ダイオード
、２８……サイリスタ、２９……コンデンサ、３
０……抵抗、３１……微分回路、３３……進角用
コンデンサ、３４……抵抗、３５……ダイオード
、３６……短絡路、である。
Figure 1 is a circuit diagram of a capacitor discharge type ignition device according to an embodiment of the present invention, Figure 2 is a waveform diagram of the same, and Figure 3 is a diagram of the same waveform.
The figure is a graph of the differential waveform when the engine speed is low, Figure 4 is a graph of the differential waveform when the engine speed is high, Figure 5 is a graph showing the characteristics of the step advance angle, and Figure 6 is a graph of the differential waveform when the engine speed is high. FIG. 7, a circuit diagram of a conventional ignition system, is a graph showing changes in capacitor voltage. In addition, in the symbols used in the drawings, 20... Generator coil, 22... Ignition capacitor, 23... Ignition coil, 24... Primary coil, 25... Secondary coil, 26... Spark plug, 27... Diode, 28... Thyristor, 29... Capacitor, 3
0...Resistor, 31...Differential circuit, 33...Advance angle capacitor, 34...Resistor, 35...Diode, 36...Short circuit.
Claims (1)
ンデンサを充電するとともに、前記発電コイルが
次いで発生する負方向の出力によつて半導体開閉
素子を導通させ、前記点火用コンデンサの電荷を
急激に点火コイルに供給するようにした点火装置
において、前記発電コイルのマイナス側端子と前
記半導体開閉素子のゲートとの間に微分回路を接
続したことを特徴とするコンデンサ放電式点火装
置。 ２ 発電コイルの正方向の出力によつて点火用コ
ンデンサを充電するとともに、前記発電コイルが
次いで発生する負方向の出力によつて半導体開閉
素子を導通させ、前記点火用コンデンサの電荷を
急激に点火コイルに供給するようにした点火装置
において、前記半導体開閉素子のゲート・カソー
ド間に進角用コンデンサと抵抗の並列回路を接続
するとともに、前記進角用コンデンサと抵抗の並
列回路を短絡する短絡路を設け、しかも該短絡路
に前記発電コイルの負方向の出力が流れるのを防
止するダイオードを接続するようにしたことを特
徴とするコンデンサ放電式点火装置。[Claims for Utility Model Registration] 1. The ignition capacitor is charged by the positive output of the generator coil, and the semiconductor switching element is made conductive by the negative output generated by the generator coil, and the ignition capacitor is charged by the output of the generator coil in the positive direction. An ignition device that rapidly supplies electric charge from a power generation capacitor to an ignition coil, characterized in that a differential circuit is connected between the negative terminal of the power generation coil and the gate of the semiconductor switching element. Ignition device. 2. The ignition capacitor is charged by the positive output of the generator coil, and the semiconductor switching element is made conductive by the negative output generated by the generator coil, so that the charge in the ignition capacitor is rapidly ignited. In the ignition device configured to supply power to a coil, a short-circuit path connects a parallel circuit of an advance angle capacitor and a resistor between the gate and cathode of the semiconductor switching element, and shorts the parallel circuit of the advance angle capacitor and the resistor. 1. A capacitor discharge type ignition device, characterized in that a diode is connected to the short-circuit path to prevent the output of the power generating coil from flowing in the negative direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2109688U JPH01125865U (en) | 1988-02-19 | 1988-02-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2109688U JPH01125865U (en) | 1988-02-19 | 1988-02-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01125865U true JPH01125865U (en) | 1989-08-28 |
Family
ID=31238025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2109688U Pending JPH01125865U (en) | 1988-02-19 | 1988-02-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01125865U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5330036B2 (en) * | 1974-03-28 | 1978-08-24 |
-
1988
- 1988-02-19 JP JP2109688U patent/JPH01125865U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5330036B2 (en) * | 1974-03-28 | 1978-08-24 |
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