JPS587100Y2 - automotive ignition system - Google Patents
automotive ignition systemInfo
- Publication number
- JPS587100Y2 JPS587100Y2 JP1977094001U JP9400177U JPS587100Y2 JP S587100 Y2 JPS587100 Y2 JP S587100Y2 JP 1977094001 U JP1977094001 U JP 1977094001U JP 9400177 U JP9400177 U JP 9400177U JP S587100 Y2 JPS587100 Y2 JP S587100Y2
- Authority
- JP
- Japan
- Prior art keywords
- ignition
- primary winding
- ignition system
- ignition coil
- switch
- 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.)
- Expired
Links
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
Description
【考案の詳細な説明】 本考案は自動車点火装置に関するものである。[Detailed explanation of the idea] The present invention relates to an automobile ignition system.
従来の自動車点火装置としては、第１図に示すように、
直流電源１９点火コイル２９点火スイッチ３．コンデン
サ４および点火プラグ５からなｑ点火スイッチ３を閉じ
て（オンして）点火コイル２の１次側巻線２１に直流電
源１から点火スイッチ３を径由して電流を流し、次に点
火スイッチ３を開いて（オフして）点火コイル２の２次
側巻線２２に高圧を発生し、点火プラグ５に点火するよ
うにしたものが知られている。As a conventional automobile ignition system, as shown in Fig. 1,
DC power supply 19 ignition coil 29 ignition switch 3. Closing (turning on) the ignition switch 3 from the capacitor 4 and the spark plug 5 causes current to flow from the DC power source 1 through the ignition switch 3 to the primary winding 21 of the ignition coil 2, and then ignition. It is known that the switch 3 is opened (turned off) to generate high voltage in the secondary winding 22 of the ignition coil 2 and ignite the ignition plug 5.
このように、従来の装置では、点火スイッチ３が第２図
ａのオン時間に１次巻線２１に電流が流れそれを飽和さ
せ、オフ時間に２次側巻線２２に高上を発生させ、点火
プラグ５に第２図すのようなスパークを発生させるが、
ドウエルアングル（スイッチ３のオン・オフ比）が５０
優とすると１次側巻線２１に電流が流れる時間は、スパ
ーク間隔の半分になる。In this manner, in the conventional device, the ignition switch 3 causes current to flow through the primary winding 21 during the on-time shown in FIG. , the spark plug 5 generates a spark as shown in Figure 2.
Dwell angle (on/off ratio of switch 3) is 50
If it is excellent, the time during which the current flows through the primary winding 21 is half the spark interval.
したがって、高速回転になり、スパーク間隔が短くなる
と、充分に飽和するだけのスイッチオン時間が得られず
、エネルギ損失が増大する。Therefore, when the rotation speed becomes high and the spark interval becomes short, the switch-on time for sufficient saturation cannot be obtained, resulting in increased energy loss.
また、１次側巻線２１に流れる電流が一方向なので１点
火コイルに発生される磁束も第３図のように片方向だけ
となり、非常に効率が悪い。Furthermore, since the current flowing through the primary winding 21 is unidirectional, the magnetic flux generated in one ignition coil is also unidirectional as shown in FIG. 3, resulting in very poor efficiency.
本考案は、点火コイルの１次巻線をプッシュプル構成と
して、１次巻線に両方向の電流を流すことにより、高速
性能に優れ、効率のよい自動車点火装置を提供するもの
である。The present invention provides a highly efficient automobile ignition system with excellent high-speed performance by having the primary winding of the ignition coil have a push-pull configuration and allowing current to flow in both directions through the primary winding.
以下、本考案の実施例を図面により詳細に説明する。Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
第４図は本考案による自動車点火装置の一実施例を示す
ものである。FIG. 4 shows an embodiment of the automobile ignition system according to the present invention.
図において、点火コイル２の１次巻線２１の中点タップ
が直流電源１に接続され、１次巻線２１の両端はそれぞ
れ点火スイッチ３１および３２を介して接地されている
。In the figure, the center tap of the primary winding 21 of the ignition coil 2 is connected to the DC power supply 1, and both ends of the primary winding 21 are grounded via ignition switches 31 and 32, respectively.
また、点火スイッチ３１および３２とそれぞれ並列にコ
ンデンサ４１および４２が接続されている。Further, capacitors 41 and 42 are connected in parallel with the ignition switches 31 and 32, respectively.
さらに点火コイル２の２次巻線２２の一端は点火プラグ
５に接続され他端は接地されている。Furthermore, one end of the secondary winding 22 of the ignition coil 2 is connected to the ignition plug 5, and the other end is grounded.
第５図ａおよびｂは点火スイッチ３１および３２の状態
を示し、第５図Ｃは点火プラグ５のスパーク状態を示す
。5a and 5b show the states of the ignition switches 31 and 32, and FIG. 5c shows the sparking state of the ignition plug 5. FIG.
第５図ａおよびｂのように、点火スイッチ３１および３
２は、一方がオンの時、他方はオフとなるように連動さ
れている。Ignition switches 31 and 3 as shown in Figures 5a and 5b.
2 are interlocked so that when one is on, the other is off.
したがって、点火コイル２の１次巻線２１に電流が流れ
る時間は第２図の従来の場合の２倍となリ、高速回転に
おいても点火コイル２が充分飽和することができ、エネ
ルギ損失を大巾に減少できる。Therefore, the time for current to flow through the primary winding 21 of the ignition coil 2 is twice as long as in the conventional case shown in FIG. It can be reduced to width.
また、１次巻線１には双方向の電流が流れるので、発生
する磁束も第６図のように一φｍから十φｍまで変化し
、第３図の従来のものに比較して２倍の変化となる。Furthermore, since bidirectional current flows through the primary winding 1, the generated magnetic flux also varies from 1 φm to 10 φm as shown in Figure 6, which is twice as large as that of the conventional one shown in Figure 3. It becomes a change.
なお、上述した点火スイッチとしてトランジスタ等を使
用することもできる。Note that a transistor or the like can also be used as the above-mentioned ignition switch.
以上述べたように、本考案によれば、高速性能に優れ、
効率のよい自動車点火装置を得ることができる。As mentioned above, according to the present invention, it has excellent high-speed performance and
An efficient automobile ignition system can be obtained.
第１図は従来の点火装置の回路図、第２図は第１図の動
作を説明する波形図、第３図は第１図の点火コイルの磁
束変化の特性図、第４図は本考案による点火装置の一実
施例の回路図、第５図は第４図の動作を説明する波形図
、第６図は第４図の点火コイルの磁束変化の特性図であ
る。
１は直流電源、２は点火コイル、３１．３２は点火スイ
ッチ、５は点火プラグ、２１は１次巻線を示す。Fig. 1 is a circuit diagram of a conventional ignition system, Fig. 2 is a waveform diagram explaining the operation of Fig. 1, Fig. 3 is a characteristic diagram of magnetic flux change of the ignition coil shown in Fig. 1, and Fig. 4 is a diagram of the present invention. FIG. 5 is a waveform diagram illustrating the operation of FIG. 4, and FIG. 6 is a characteristic diagram of changes in magnetic flux of the ignition coil of FIG. 4. 1 is a DC power source, 2 is an ignition coil, 31.32 is an ignition switch, 5 is a spark plug, and 21 is a primary winding.
Claims (1)
、前記１次巻線の両端に、それぞれ相補的に連動して動
作するスイッチ手段を接続し、該スイッチ手段には並列
にコンデンサを接続して、上記スイッチ手段をオンオフ
させて上記コンデンサを交互に充放電せしめ、前記１次
巻線に両方向の放電電流を供給するように構成したこと
を特徴とする自動車点火装置。A DC power source is connected to the center tap of the primary winding of the ignition coil, and switch means that operate in a complementary manner are connected to both ends of the primary winding, and a capacitor is connected in parallel to the switch means. , and the switch means is turned on and off to alternately charge and discharge the capacitor, thereby supplying discharge current in both directions to the primary winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977094001U JPS587100Y2 (en) | 1977-07-16 | 1977-07-16 | automotive ignition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977094001U JPS587100Y2 (en) | 1977-07-16 | 1977-07-16 | automotive ignition system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5421726U JPS5421726U (en) | 1979-02-13 |
| JPS587100Y2 true JPS587100Y2 (en) | 1983-02-07 |
Family
ID=29025610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1977094001U Expired JPS587100Y2 (en) | 1977-07-16 | 1977-07-16 | automotive ignition system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS587100Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5341620U (en) * | 1976-09-14 | 1978-04-11 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5341620Y2 (en) * | 1975-01-13 | 1978-10-06 |
-
1977
- 1977-07-16 JP JP1977094001U patent/JPS587100Y2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5341620U (en) * | 1976-09-14 | 1978-04-11 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5421726U (en) | 1979-02-13 |
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