JPS6231776U - - Google Patents
Info
- Publication number
- JPS6231776U JPS6231776U JP12349085U JP12349085U JPS6231776U JP S6231776 U JPS6231776 U JP S6231776U JP 12349085 U JP12349085 U JP 12349085U JP 12349085 U JP12349085 U JP 12349085U JP S6231776 U JPS6231776 U JP S6231776U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- ignition
- ignition power
- circuit
- capacitor
- 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 6
- 238000002485 combustion reaction Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
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を示す回路図、第２
図は従来例を示す回路図、第３図は従来例及び本
考案の実施例の点火装置を用いた場合の機関の指
圧線を示す線図、第４図は本考案の実施例の点火
装置の点火コイルの２次電圧を機関の回転角度に
対して示した波形図である。
１…点火コイル、２…点火プラグ、３…トラン
ジスタ、５…トランジスタ、６〜８…抵抗、１１
…点火電源短絡用サイリスタ、１２…トリガ回路
、２１…遅角制御用サイリスタ、２２，２４…ダ
イオード、２３…コンデンサ、２０，２５…抵抗
。
Figure 1 is a circuit diagram showing one embodiment of the present invention, Figure 2 is a circuit diagram showing an embodiment of the present invention.
The figure is a circuit diagram showing a conventional example, Figure 3 is a line diagram showing the acupressure line of the engine when using the ignition system of the conventional example and the embodiment of the present invention, and Figure 4 is the ignition system of the embodiment of the present invention. FIG. 3 is a waveform diagram showing the secondary voltage of the ignition coil of the engine with respect to the rotation angle of the engine. DESCRIPTION OF SYMBOLS 1... Ignition coil, 2... Spark plug, 3... Transistor, 5... Transistor, 6-8... Resistor, 11
... Thyristor for shorting the ignition power supply, 12... Trigger circuit, 21... Thyristor for retard control, 22, 24... Diode, 23... Capacitor, 20, 25... Resistor.
Claims (1)
間該点火電源コイルに流しておいた電流を点火時
期に遮断することにより点火用高電圧を発生させ
る電流遮断形の点火回路と、導通した際に前記一
方の極性の半サイクルの期間に前記点火電源コイ
ルに誘起する電圧を実質的に短絡するように前記
点火電源コイルに対して並列に設けられた点火電
源短絡用サイリスタと、内燃機関の回転速度を検
出して回転速度が設定値を超えた時に前記点火電
源短絡用サイリスタをトリガするトリガ回路とを
備えた内燃機関用点火装置において、 前記点火電源短絡用サイリスタに対して逆並列
接続された遅角制御用サイリスタと、 前記点火電源短絡用サイリスタの導通時に充電
されるコンデンサと、 前記コンデンサの電荷を前記遅角制御用サイリ
スタのゲートカソード間を通して放電させるコン
デンサ放電回路とを具備し、 前記コンデンサ放電回路の放電時定数は、点火
電源コイルの他方の極性の半サイクルの出力が立
上るまで前記コンデンサの放電を持続させるのに
充分な大きさに設定されていることを特徴とする
内燃機関用点火装置。[Claims for Utility Model Registration] Current interrupt type ignition that generates high voltage for ignition by interrupting the current flowing through the ignition power supply coil at the ignition timing for a half-cycle period of one polarity of the ignition power supply coil. and an ignition power supply short-circuiting thyristor provided in parallel to the ignition power supply coil so as to substantially short-circuit the voltage induced in the ignition power supply coil during the half cycle of the one polarity when conductive. and a trigger circuit that detects the rotation speed of the internal combustion engine and triggers the ignition power short circuit thyristor when the rotation speed exceeds a set value, a capacitor that is charged when the ignition power supply short-circuit thyristor is connected; and a capacitor discharge circuit that discharges the charge of the capacitor through between the gate and cathode of the retard control thyristor. and that the discharge time constant of the capacitor discharge circuit is set to be large enough to sustain the discharge of the capacitor until the output of the other polarity half cycle of the ignition power supply coil rises. Characteristics of the ignition system for internal combustion engines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12349085U JPH037580Y2 (en) | 1985-08-13 | 1985-08-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12349085U JPH037580Y2 (en) | 1985-08-13 | 1985-08-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6231776U true JPS6231776U (en) | 1987-02-25 |
| JPH037580Y2 JPH037580Y2 (en) | 1991-02-25 |
Family
ID=31014640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12349085U Expired JPH037580Y2 (en) | 1985-08-13 | 1985-08-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH037580Y2 (en) |
-
1985
- 1985-08-13 JP JP12349085U patent/JPH037580Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH037580Y2 (en) | 1991-02-25 |
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