JPH0631600B2 - Non-contact ignition device for internal combustion engine - Google Patents
Non-contact ignition device for internal combustion engineInfo
- Publication number
- JPH0631600B2 JPH0631600B2 JP61238562A JP23856286A JPH0631600B2 JP H0631600 B2 JPH0631600 B2 JP H0631600B2 JP 61238562 A JP61238562 A JP 61238562A JP 23856286 A JP23856286 A JP 23856286A JP H0631600 B2 JPH0631600 B2 JP H0631600B2
- Authority
- JP
- Japan
- Prior art keywords
- ignition
- coil
- core
- capacitor
- magnet
- 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 - Lifetime
Links
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はコンデンサ放電式の内燃機関用無接点点火装置
に関する。The present invention relates to a capacitor discharge type non-contact ignition device for an internal combustion engine.
従来、特開昭５８−１７２４６３号公報に示すように、
充電コイルに流れる電流を遮断して、電流遮断時の充電
コイルに発生する高電圧によって、点火用コンデンサを
充電するものがある。Conventionally, as disclosed in JP-A-58-172463,
There is a method in which the current flowing through the charging coil is cut off and the ignition capacitor is charged by a high voltage generated in the charging coil when the current is cut off.
すなわち、遮断時の高電圧を利用することで、コンデン
サの充電電圧をアップすると共に、一方、コンデンサ充
電コイル巻数を減少させて、充電コイルの線径をアップ
し、断線等の品質上のトラブルをなくしている。In other words, by using the high voltage at the time of interruption, the charging voltage of the capacitor is increased, while the number of turns of the capacitor charging coil is reduced, the wire diameter of the charging coil is increased, and quality problems such as disconnection occur. I'm losing.
ところが、上述した従来のものでは、磁石発電機（マグ
ネト）のステータコアは、外周に突出する複数個の突出
部を有し、これら突出部に充電コイルを直列に巻いてい
た。However, in the above-mentioned conventional one, the stator core of the magneto-generator (magnet) has a plurality of projecting portions projecting to the outer periphery, and the charging coil is wound in series on these projecting portions.
また、近年小型化を計るために、マグネトの体格を小さ
くする要求がある。Further, in recent years, there is a demand for reducing the size of the magneto in order to achieve miniaturization.
そのため、小型化を計っていくと、ステータを小さくす
る必要があり、突出部の幅が減少し、必然的にコンデン
サ充電コイルを巻くスペースが減少してしまう。従っ
て、ステータコアの突出部のほとんどをコンデンサ充電
コイルを巻くためのものとして利用する必要性が生じて
くる。Therefore, as the size of the capacitor is reduced, it is necessary to reduce the size of the stator, the width of the protruding portion is reduced, and the space for winding the capacitor charging coil is inevitably reduced. Therefore, it becomes necessary to use most of the protruding portion of the stator core for winding the capacitor charging coil.
しかし、１極（１つの突出部）に充電コイルを集中巻き
した場合に比べ、上述した如く、同じ巻数を複数の極に
分布巻きすると、充電コイルのインダクタンスが大幅に
ダウンしてしまう。However, as described above, when the same number of turns is distributedly wound on a plurality of poles, the inductance of the charging coil is significantly reduced as compared with the case where the charging coil is concentratedly wound on one pole (one protruding portion).
つまり、集中巻きの場合：Ｌ１αＮ２、分布巻きの場
合： （Ｎ：トータル巻数、Ｐ：コンデンサ充電コイルを巻い
た極数）となる。That is, in the case of concentrated winding: L 1 αN 2 , in the case of distributed winding: (N: total number of turns, P: number of poles around which the capacitor charging coil is wound).
特に、電流遮断方式の場合、過渡電圧により、コンデン
サに充電される分は、コイルのインダクタンスと遮断電
流の積に比例するため、所定のコンデンサ電圧を得る為
には、“線径ダウン→巻数アップ”により、コイルのイ
ンダクタンスをアップするか、遮断電流値をアップせざ
るを得ない。In particular, in the case of the current cutoff method, the amount of charge to the capacitor due to the transient voltage is proportional to the product of the coil inductance and the cutoff current. ”, It is unavoidable to increase the inductance of the coil or the breaking current value.
しかし、「線径ダウン→巻数アップ」した場合、品質ダ
ウン（断線の心配。特に渡り線が断線する可能性がある
ため、渡り線は何重かをツイストするといったような複
雑な工程をとらざるを得なくなる。）につながり、又、
遮断電流値をアップした場合、電流遮断用トランジスタ
の容量アップによりコストアップとなるという問題点が
ある。However, if "the wire diameter is reduced → the number of turns is increased", the quality will be reduced (there is a concern about disconnection. In particular, there is a possibility that the crossover will be broken, so we have to take a complicated process such as twisting the crossover. Will be lost.)
When the cutoff current value is increased, there is a problem that the cost is increased due to an increase in the capacity of the current cutoff transistor.
そこで、本発明は、 内燃機関のシャフトに固定された鉄わんと、この鉄わん
の内周に設けられ、周方向に交互に極性を変えた複数極
の磁石と、この磁石の内周面と対向する爪部を有する第
１のコアと、前記磁石の内周面と対向し、前記第１のコ
アの隣接する爪部間に配置される爪部を有する第２のコ
アと、前記第１のコアの内周側と前記第２のコアの内周
側とを連絡する円筒部材と、この円筒部材の外周に巻か
れた充電コイルとを有する磁石発電機と、 この磁石発電機の充電コイルの一方の半波出力を実質的
に短絡する短絡用半導体スイッチング素子と、この短絡
用半導体スイッチング素子を遮断させるための遮断制御
回路と、この短絡用半導体スイッチング素子の遮断時に
前記充電コイルに誘起される高電圧によって充電される
コンデンサと、１次コイルおよび２次コイルを有する点
火コイルと、点火時期にて点火信号を発生する点火信号
発生回路と、この点火信号発生回路よりの点火信号によ
り導通して前記コンデンサの充電電荷を前記点火コイル
の１次コイルに供給するための点火用半導体スイッチン
グ素子と、前記点火コイルの２次コイルに接続した点火
栓とを備えた内燃機関用無接点点火装置とすることであ
る。Therefore, the present invention relates to an iron bowl fixed to a shaft of an internal combustion engine, a magnet having a plurality of poles provided on the inner circumference of the iron bowl and having polarities alternately changed in the circumferential direction, and an inner circumferential surface of the magnet. A first core having claws that face each other; a second core that has a claw that is disposed between claws adjacent to each other of the first core and that faces the inner peripheral surface of the magnet; Magnet generator having a cylindrical member that connects the inner peripheral side of the core and the inner peripheral side of the second core, and a charging coil wound around the outer periphery of the cylindrical member, and a charging coil of the magnet generator Short-circuit semiconductor switching element that substantially short-circuits one half-wave output, a cut-off control circuit that cuts off the short-circuit semiconductor switching element, and is induced in the charging coil when the short-circuit semiconductor switching element is cut off. Conden charged by high voltage An ignition coil having a primary coil and a secondary coil, an ignition signal generating circuit for generating an ignition signal at an ignition timing, and an ignition signal from the ignition signal generating circuit for conducting the charge to charge the capacitor. A contactless ignition device for an internal combustion engine, comprising an ignition semiconductor switching element for supplying to a primary coil of an ignition coil, and an ignition plug connected to a secondary coil of the ignition coil.
以下本発明を図に示す実施例について説明する。第１図
に本発明内燃機関用無接点点火装置に用いる磁石式発電
機の一実施例を示すもので、第２図には第１図における
ステータの断面図を示してある。The present invention will be described below with reference to embodiments shown in the drawings. FIG. 1 shows an embodiment of a magnet type generator used in the non-contact ignition device for an internal combustion engine of the present invention, and FIG. 2 shows a sectional view of the stator in FIG.
まず、第２図に示すステータについて説明すると、１，
１′は１対のコアであり、第３図(a)，(b)に示す如く、
コア１，１′は、円筒部１ａ，１′ａと、この円筒部１
ａ，１′ａの端部より径方向外周側に突出した４つの突
出部１ｂ，１′ｂと、これら突出部１ｂ，１′ｂの先端
より屈曲し、円筒部１ａ，１′ａと対向する先細りの爪
部１ｃ，１′ｃとからなる。また、円筒部１ａ，１′ａ
の端面には、４５度づつ交互に突起１ｄ，１′ｄ、凹み
１ｅ，１′ｅが形成されている。そして、コア１の円筒
部１ａの端面と、コア１′の円筒部１′ａの端面とを、
突起１ｄ，１′ｄを凹み１ｅ，１′ｅに互いに嵌合させ
て、当接することで、第１図および第２図に示す如く、
コア１の爪部１ｃ間の中間に、コア１′の爪部１′ｃが
配置されることとなる。First, the stator shown in FIG. 2 will be described.
1'is a pair of cores, as shown in FIGS. 3 (a) and 3 (b).
The cores 1 and 1'include the cylindrical portions 1a and 1'a and the cylindrical portion 1
a, 1'a, four protruding portions 1b, 1'b protruding radially outward from the end portions, and bent from the tips of these protruding portions 1b, 1'b, facing the cylindrical portions 1a, 1'a And tapered claws 1c and 1'c. Also, the cylindrical portions 1a and 1'a
The protrusions 1d and 1'd and the recesses 1e and 1'e are alternately formed on the end surface of the substrate at 45 degree intervals. The end surface of the cylindrical portion 1a of the core 1 and the end surface of the cylindrical portion 1'a of the core 1'are
By fitting the protrusions 1d and 1'd into the recesses 1e and 1'e and contacting them, as shown in FIGS. 1 and 2,
The claws 1'c of the core 1'are arranged in the middle between the claws 1c of the core 1.
２は樹脂製のボビンであり、第４図(a)，(b)に示す如
く、コア１，１′の円筒部１ａ，１′ａ上に配置される
筒部２ａと、この筒部２ａの両端に設けられた一対のフ
ランジ部２ｂと、これらフランジ部２ｂのうち１つのフ
ランジ部２ｂより軸方向に突出する１対の突起２ｃとか
ら成る。そして、ボビン２は、コア１，１′の円筒部１
ａ，１′ａと爪部１ｃ，１′ｃとの間およびコア１，
１′の突出部１ｂ，１′ｂ間に配置される。この時、ボ
ビン２の１対の突起２ｃをそれぞれコア１の突出部１ｂ
の側面に当接させることで、ボビン２をポールコア１も
しくは１′に対して、位置決めを行なうものである。Reference numeral 2 denotes a resin bobbin, and as shown in FIGS. 4 (a) and 4 (b), a cylindrical portion 2a arranged on the cylindrical portions 1a and 1'a of the cores 1 and 1 ', and the cylindrical portion 2a. A pair of flanges 2b provided at both ends of the flange 2b, and a pair of protrusions 2c axially protruding from one of the flanges 2b. The bobbin 2 is the cylindrical portion 1 of the core 1, 1 '.
a, 1'a and claws 1c, 1'c, and the core 1,
1'is arranged between the protruding portions 1b and 1'b. At this time, the pair of protrusions 2c of the bobbin 2 are respectively connected to the protrusions 1b of the core 1.
The bobbin 2 is positioned with respect to the pole core 1 or 1'by contacting the side surface of the bobbin 2.
３はボビン２の外周に巻装されるコンデンサ充電コイル
である。3 is a capacitor charging coil wound around the bobbin 2.
４はアルミニウムで形成された円盤状のベースであり、
第５図に示す如く、ベース４には、中心に貫通穴４ａが
形成され、この貫通穴４ａの囲りには、外周部４ｂより
も突出した円盤部４ｃが形成されている。そして、円盤
部４ｃには対向する位置に１対の突起４ｄが形成されて
いる。外周部４ｂには、エンジン側に取り付けるための
１対の穴部４ｅと、センサ９を取り付けるための１対の
取り付け部４ｆとが設けられている。4 is a disc-shaped base made of aluminum,
As shown in FIG. 5, a through hole 4a is formed in the center of the base 4, and a disk portion 4c that projects more than the outer peripheral portion 4b is formed around the through hole 4a. A pair of protrusions 4d are formed on the disk portion 4c at opposite positions. The outer peripheral portion 4b is provided with a pair of holes 4e for mounting on the engine side and a pair of mounting portions 4f for mounting the sensor 9.
そして、ベース４の円盤部４ｃ上に、内部にボビン２を
配置したコア１，１′を配置する。この時、コア１の突
出部１ｂもしくはコア１′の突出部１′ｂを、突起４ｄ
に当接することで、ベース４に対するコア１およびコ
ア′の位置決めを行っている。その後、第２図に示す如
く、コア１，１′の円筒部１ａ，１′ａの内周およびベ
ース４の貫通穴４ａにパイプ５を挿入する。パイプ５に
は、一端につば部５ａを有し、このつば部５ａを、空間
４ｇ内で、ベース４の円盤部４ｃに当接し、他端をコア
１′の端面に巻き締めすることで、ベース４にコア１，
１′、ボビン２を装着している。Then, the cores 1 and 1 ′ having the bobbin 2 arranged therein are arranged on the disk portion 4 c of the base 4. At this time, the protrusion 1b of the core 1 or the protrusion 1'b of the core 1'is replaced with the protrusion 4d.
The core 1 and the core ′ are positioned with respect to the base 4 by making contact with the base 4. Thereafter, as shown in FIG. 2, the pipe 5 is inserted into the inner circumferences of the cylindrical portions 1a and 1'a of the cores 1 and 1'and the through hole 4a of the base 4. The pipe 5 has a collar portion 5a at one end, the collar portion 5a is brought into contact with the disk portion 4c of the base 4 in the space 4g, and the other end is wound around the end surface of the core 1 ', Core 4 on base 4
1 ', bobbin 2 is attached.
６はエンジンのクランクシャフトに固定された鉄わんで
あり、この鉄わん６の外周には、誘導子７が形成されて
いる。Reference numeral 6 denotes an iron bowl fixed to the crankshaft of the engine, and an inductor 7 is formed on the outer circumference of the iron bowl 6.
また、８は鉄わん６の円周に固定した磁石であり、図示
する如く、周方向に交互に８極着磁されている。Further, 8 is a magnet fixed to the circumference of the iron bowl 6, and as shown in the drawing, is magnetized to have eight poles alternately in the circumferential direction.
９は誘導子７と対向するように配置されたセンサであ
り、このセンサ９はベース４の取り付け部４ｆにビスに
より、固定している。Reference numeral 9 denotes a sensor arranged so as to face the inductor 7, and the sensor 9 is fixed to the mounting portion 4f of the base 4 with a screw.
次に、第６図に、上述した磁石式発電機を適用した本発
明内燃機関用無接点点火装置の電気回路図について説明
する。エンジンのクランクシャフトの回転により、鉄わ
ん６および磁石８が回転することで、磁石８のＮ極の磁
束がコア１からコア１′およびコア１′からコア１に交
互に流れ、コンデンサ充電コイル３に交流電圧波形を生
じさせる。Next, FIG. 6 illustrates an electric circuit diagram of the non-contact ignition device for an internal combustion engine of the present invention to which the above-mentioned magnet type generator is applied. The rotation of the crankshaft of the engine causes the iron bowl 6 and the magnet 8 to rotate, so that the magnetic flux of the N pole of the magnet 8 alternately flows from the core 1 to the core 1 ′ and from the core 1 ′ to the core 1, and the capacitor charging coil 3 To produce an AC voltage waveform.
今、充電コイル３に実線矢印方向（負方向）の半波出力
が発生し始めると、ダイオード１０を介して、回路電源
用コンデンサ１１を充電する。このコンデンサ１１の充
電電圧は、ツェナーダイオード１２、抵抗１３、サイリ
スタ１４により、所定電圧に維持される。また、１５
ａ．１５ｂはそれぞれダイオードである。Now, when a half-wave output in the direction of the solid arrow (negative direction) starts to be generated in the charging coil 3, the circuit power supply capacitor 11 is charged via the diode 10. The charging voltage of the capacitor 11 is maintained at a predetermined voltage by the Zener diode 12, the resistor 13 and the thyristor 14. Also, 15
a. 15b is a diode, respectively.
次に、充電コイル３に破線矢印方向（正方向）の半波出
力が発生すると、電流遮断用トランジスタ１６は、抵抗
１７を介したコンデンサ１１の電圧により、導通してい
るので、正の半波出力は、抵抗１５を介して、電流遮断
用トランジスタ１６により短絡される。そして、半波出
力が増大して、抵抗１９，２０の接続点の電圧が上昇
し、トランジスタ２１を導通させて、電流遮断用トラン
ジスタ１６が遮断し、短絡電流が急激に遮断される。Next, when a half-wave output in the direction of the broken line arrow (positive direction) is generated in the charging coil 3, the current cut-off transistor 16 is conducting due to the voltage of the capacitor 11 via the resistor 17, so that a positive half-wave is generated. The output is short-circuited by the current cut-off transistor 16 via the resistor 15. Then, the half-wave output increases, the voltage at the connection point between the resistors 19 and 20 rises, the transistor 21 is made conductive, the current cut-off transistor 16 is cut off, and the short-circuit current is rapidly cut off.
このとき、コイル３には、大きな誘導電圧が発生し、こ
の高電圧を、ダイオード２２を介して、点火用コンデン
サ２３に充電する。At this time, a large induced voltage is generated in the coil 3, and the ignition capacitor 23 is charged with this high voltage via the diode 22.
また、２４は点火時期制御回路であり、回路電源用コン
デンサ１１を電源としている。Reference numeral 24 is an ignition timing control circuit, which uses the circuit power supply capacitor 11 as a power source.
そして、点火時期になると、タイミングセンサ９の信号
（出力）により、点火時期制御回路２４の電子的に決定
された点火信号により、点火用サイリスタ２５が導通
し、点火用コンデンサ２３に蓄えられた充電電荷を、点
火用サイリスタ２５を介して、点火コイル２６の１次コ
イル２６ａに流し、２次コイル２６ｂに高電圧を得て、
点火栓２７に点火火花を発生する。When the ignition timing comes, the ignition thyristor 25 is turned on by the ignition signal electronically determined by the ignition timing control circuit 24 by the signal (output) of the timing sensor 9, and the charge stored in the ignition capacitor 23 is charged. The electric charge is supplied to the primary coil 26a of the ignition coil 26 through the ignition thyristor 25 to obtain a high voltage in the secondary coil 26b,
An ignition spark is generated in the ignition plug 27.
次に、第７図において、本発明における磁石発電機Ａ
と、従来における磁石発電機Ｂの充電コイルのインダク
タンスを示すもので、この場合、充電コイルの総巻数を
同じものとしてある。この図からみても明らかな如く、
本発明の充電コイルのインダクタンスの方を従来に対し
て、十分アップできるため、低い遮断電流（電流遮断用
トランジスタ１６を流れる電流）で、高い誘導電圧を発
生させることができる。つまり、トランジスタ１６を安
価なものとすることができる。Next, referring to FIG. 7, a magnet generator A according to the present invention.
Shows the inductance of the charging coil of the conventional magnet generator B, and in this case, the total number of turns of the charging coil is the same. As you can see from this figure,
Since the inductance of the charging coil of the present invention can be sufficiently increased as compared with the conventional case, a high induction voltage can be generated with a low breaking current (current flowing through the current breaking transistor 16). That is, the transistor 16 can be inexpensive.
また、遮断電流および点火用コンデンサ２３に蓄えられ
る電圧を従来と同様とすれば、コイル３の巻数を少なく
でき、コイル３の線径を大きくして、断線等の品質上の
問題をなくすことも可能である。Further, if the breaking current and the voltage stored in the ignition capacitor 23 are the same as in the conventional case, the number of turns of the coil 3 can be reduced, and the wire diameter of the coil 3 can be increased to eliminate quality problems such as disconnection. It is possible.
さらに、第８図においては、本発明の磁石発電機Ａの充
電コイルと、従来の磁石発電機Ｂの充電コイルのインダ
クタンスの最大値を一致させたものである。この第８図
より明らかな如く、ロータ（鉄わん６と磁石８）と、ス
テータとの位置関係に対して、実線Ａ（本発明）の方
が、破線Ｂに対して、インダクタンスの変化が少ないこ
とがわかる。つまり、定電流遮断を行った場合、回転数
によりコンデンサ充電コイルの短絡電流が変化し、電流
遮断位置が変化する。このため、充電コイル３のインダ
クタンスがロータとステータの相対関係で、大きく変化
すると、それに伴い、点火用コンデンサ２３の充電電圧
が変化してしまう。しかしながら、第８図より、本発明
では充電コイル３のインダクタンスの変化が少なく、点
火用コンデンサ２３の充電電圧の変化を押さえることも
できる。Further, in FIG. 8, the maximum value of the inductance of the charging coil of the magnet generator A of the present invention and the maximum value of the inductance of the charging coil of the conventional magnet generator B are matched. As is clear from FIG. 8, the solid line A (invention) has a smaller change in inductance than the broken line B with respect to the positional relationship between the rotor (iron bowl 6 and magnet 8) and the stator. I understand. That is, when the constant current interruption is performed, the short-circuit current of the capacitor charging coil changes depending on the rotation speed, and the current interruption position changes. For this reason, when the inductance of the charging coil 3 largely changes due to the relative relationship between the rotor and the stator, the charging voltage of the ignition capacitor 23 changes accordingly. However, as shown in FIG. 8, in the present invention, the change of the inductance of the charging coil 3 is small, and the change of the charging voltage of the ignition capacitor 23 can be suppressed.
特に、従来のものでは回転数の上昇と共に、電流遮断位
置が遅れ（コンデンサ充電コイルの負半波短絡している
為、電流の位相遅れによる）、遮断瞬時のインダクタン
スが低下していくため、高回転では電流遮断回路追加に
よるコンデンサ電圧アップの効果がほとんどなかったの
に対し、本発明では低速から高速まで、コイルのインダ
クタンスが変化せず、コンデンサ電圧を確実にアップで
きる。In particular, in the conventional type, the current cutoff position is delayed (because of the negative half-wave short circuit of the capacitor charging coil, which is caused by the current phase delay) and the inductance at the cutoff moment is reduced as the number of revolutions increases. In rotation, the effect of increasing the capacitor voltage due to the addition of the current cutoff circuit was almost absent, but in the present invention, the inductance of the coil does not change from low speed to high speed, and the capacitor voltage can be reliably increased.
また、上述した第１，第２実施例では、磁石８の極数を
８、コア１，１′，２０，２０′の爪部の数を８とした
８−８極の磁石式発電機を示したが、上記極数および爪
の数は任意に設定されるものである。Further, in the above-described first and second embodiments, an 8-8-pole magnetic generator in which the number of poles of the magnet 8 is 8 and the number of claw portions of the cores 1, 1 ', 20, 20' is 8 is provided. Although shown, the number of poles and the number of claws are set arbitrarily.
なお、ボビン２上には、充電コイル３を全て巻いたが、
ボビンを分割し、電気負荷用コイルを巻くことにより、
電気負荷用出力を得てもよい。Although all the charging coils 3 are wound on the bobbin 2,
By dividing the bobbin and winding the coil for electric load,
You may obtain the output for electric loads.
以上述べたように、本発明においては、コンデンサ充電
コイルのインダクタンスを大幅に大きくすることができ
るため、線径を小さくして巻数をアップする必要がな
く、断線等の対策が不要となり、工数低減を計ることが
でき、また、遮断電流値を上げる必要がなく、短絡用半
導体スイッチング素子の容量も小さくして済むという優
れた効果がある。As described above, according to the present invention, since the inductance of the capacitor charging coil can be significantly increased, it is not necessary to reduce the wire diameter and increase the number of turns, and measures such as disconnection are unnecessary and the number of steps is reduced. Further, there is an excellent effect that it is not necessary to increase the breaking current value and the capacity of the short-circuit semiconductor switching element can be reduced.
第１図は本発明内燃機関用無接点点火装置に用いる磁石
発電機の第１実施例を示す正面図、第２図は第１図にお
ける縦断面図、第３図(a)はコアの正面図、第３図(b)は
第３図(a)におけるＸ−Ｘ線に沿う断面図、第４図(a)は
ボビンの正面図、第４図(b)は第４図(a)におけるＹ−Ｙ
線に沿う断面図、第５図はベースの正面図、第６図は本
発明内燃機関用無接点点火装置を示す電気回路図、第７
図および第８図は本発明の充電コイルと従来の充電コイ
ルのインダクタンスを示す特性図である。 １，１′……コア，１ａ，１′ａ……円筒部材をなす円
筒部，１ｃ，１′ｃ……爪部，２……ボビン，３……コ
ンデンサ充電コイル，６……鉄わん，７……誘導子，８
……磁石，９……センサ，１６……短絡用半導体スイッ
チング素子をなす電流遮断用トランジスタ，１９，２
０，２１……遮断制御回路をなす抵抗，トランジスタ，
２３……点火用コンデンサ，２５……点火用サイリス
タ，２６……点火コイル，２６ａ，２６ｂ……１次コイ
ル，２次コイル，２７……点火線。FIG. 1 is a front view showing a first embodiment of a magneto-generator used in the non-contact ignition device for an internal combustion engine of the present invention, FIG. 2 is a vertical sectional view in FIG. 1, and FIG. 3 (a) is a front view of a core. Fig. 3 (b) is a sectional view taken along line XX in Fig. 3 (a), Fig. 4 (a) is a front view of the bobbin, and Fig. 4 (b) is Fig. 4 (a). At Y-Y
5 is a sectional view taken along the line, FIG. 5 is a front view of a base, FIG. 6 is an electric circuit diagram showing a non-contact ignition device for an internal combustion engine of the present invention, and FIG.
FIG. 8 and FIG. 8 are characteristic diagrams showing the inductance of the charging coil of the present invention and the conventional charging coil. 1, 1 '... Core, 1a, 1'a ... Cylindrical part forming a cylindrical member, 1c, 1'c ... Claw part, 2 ... Bobbin, 3 ... Capacitor charging coil, 6 ... Iron bowl, 7 ... inductor, 8
...... Magnet, 9 ...... Sensor, 16 ...... Current cut-off transistor forming semiconductor switching element for short circuit, 19, 2
0,21 ... Resistance, transistor, etc.
23 ... Ignition capacitor, 25 ... Ignition thyristor, 26 ... Ignition coil, 26a, 26b ... Primary coil, Secondary coil, 27 ... Ignition wire.
Claims (1)
と、この鉄わんの内周に設けられ、周方向に交互に極性
を変えた複数極の磁石と、この磁石の内周面と対向する
爪部を有する第１のコアと、前記磁石の内周面と対向
し、前記第１のコアの隣接する爪部間に配置される爪部
を有する第２のコアと、前記第１のコアの内周側と前記
第２のコアの内周側とを連絡する円筒部材と、この円筒
部材の外周に巻かれた充電コイルとを有する磁石発電機
と、 この磁石発電機の充電コイルの一方の半波出力を実質的
に短絡する短絡用半導体スイッチング素子と、この短絡
用半導体スイッチング素子を遮断させるための遮断制御
回路と、この短絡用半導体スイッチング素子の遮断時に
前記充電コイルに誘起される高電圧によって充電される
コンデンサと、１次コイルおよび２次コイルを有する点
火コイルと、点火時期にて点火信号を発生する点火信号
発生回路と、この点火信号発生回路よりの点火信号によ
り導通して前記コンデンサの充電電荷を前記点火コイル
の１次コイルに供給するための点火用半導体スイッチン
グ素子と、前記点火コイルの２次コイルに接続した点火
栓とを備えた内燃機関用無接点点火装置。1. An iron bowl fixed to a shaft of an internal combustion engine, a plurality of magnets provided on the inner circumference of the iron bowl and having polarities alternately changed in the circumferential direction, and an inner peripheral surface of the magnet. A first core having a claw portion that operates, a second core that has a claw portion that faces the inner peripheral surface of the magnet, and is disposed between adjacent claw portions of the first core; A magnet generator having a cylindrical member that connects the inner circumference side of the core and the inner circumference side of the second core, and a charging coil wound around the outer circumference of the cylindrical member, and a charging coil of the magnet generator. A short-circuit semiconductor switching element that substantially short-circuits one half-wave output, a cut-off control circuit that cuts off the short-circuit semiconductor switching element, and is induced in the charging coil when the short-circuit semiconductor switching element is cut off. A capacitor charged by high voltage and 1 An ignition coil having a secondary coil and a secondary coil, an ignition signal generation circuit for generating an ignition signal at an ignition timing, and an ignition signal from the ignition signal generation circuit for conduction to conduct the charge stored in the capacitor to the charge of the ignition coil. A contactless ignition device for an internal combustion engine, comprising an ignition semiconductor switching element for supplying to a primary coil, and an ignition plug connected to a secondary coil of the ignition coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61238562A JPH0631600B2 (en) | 1986-10-07 | 1986-10-07 | Non-contact ignition device for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61238562A JPH0631600B2 (en) | 1986-10-07 | 1986-10-07 | Non-contact ignition device for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6394078A JPS6394078A (en) | 1988-04-25 |
| JPH0631600B2 true JPH0631600B2 (en) | 1994-04-27 |
Family
ID=17032075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61238562A Expired - Lifetime JPH0631600B2 (en) | 1986-10-07 | 1986-10-07 | Non-contact ignition device for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0631600B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09262191A (en) * | 1996-03-28 | 1997-10-07 | Mitsubishi Steel Mfg Co Ltd | Toilet seat device with standing aid |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60201070A (en) * | 1984-03-26 | 1985-10-11 | Nippon Denso Co Ltd | Contactless ignition device for internal-combustion engine |
-
1986
- 1986-10-07 JP JP61238562A patent/JPH0631600B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09262191A (en) * | 1996-03-28 | 1997-10-07 | Mitsubishi Steel Mfg Co Ltd | Toilet seat device with standing aid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6394078A (en) | 1988-04-25 |
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