JPH066229Y2 - Internal combustion engine ignition device - Google Patents
Internal combustion engine ignition deviceInfo
- Publication number
- JPH066229Y2 JPH066229Y2 JP1988051272U JP5127288U JPH066229Y2 JP H066229 Y2 JPH066229 Y2 JP H066229Y2 JP 1988051272 U JP1988051272 U JP 1988051272U JP 5127288 U JP5127288 U JP 5127288U JP H066229 Y2 JPH066229 Y2 JP H066229Y2
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- coil
- voltage
- ignition
- output
- 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
【考案の詳細な説明】 〔産業上の利用分野〕 この考案は機関の点火動作を不能とする停止スイッチを
備えた内燃機関点火装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an internal combustion engine ignition device having a stop switch for disabling the ignition operation of an engine.
第４図は従来の内燃機関点火装置を示す回路図である。
図において、１は図示しない機関により駆動される磁石
発電機の発電コイル、２はこの発電コイル１の一端に接
続された第１のコンデンサ、３はダイオード４を介して
第１のコンデンサ２に接続された第２のコンデンサ、５
はその１次コイルがコンデンサ３に接続された点火コイ
ルで、２次コイルは点火プラグ６に接続されている。７
は機関の回転に同期して点火信号を発生する信号コイ
ル、８，９は並列接続された抵抗およびコンデンサで、
バイアス回路を構成してダイオード１０を介して信号コ
イル７に接続され、また他端はスイッチング素子である
サイリスタ１１のゲートに接続されている。１２は進角
制御回路で、その入力端は抵抗１３とコンデンサ１４か
らなるバイアス回路およびダイオード１５を介して信号
コイル７に接続され、出力端はサイリスタ１１のゲート
に接続されている。また、サイリスタ１１のアノードは
ダイオード４，コンデンサ３間に接続され、カソードは
アースされている。更に１６はサイリスタ１１のゲート
・カソード間に接続された抵抗、１７は進角制御回路１
２の入力端とアース間に接続された抵抗である。１８は
電源回路で、発電コイル１の両端に直列接続されたダイ
オード１９，抵抗２０，コンデンサ２１と、コンデンサ
２１と並列に接続されたツエナダイオード２２とから構
成されている。２３は定電圧回路で、発電コイル１の両
端に接続されたサイリスタ２４と、コンデンサ２の点火
コイル５側とアース間に直列接続された抵抗２５，２６
と、この抵抗２５，２６の接続点とサイリスタ２４のゲ
ートとの間に接続されたツエナダイオード２７と、サイ
リスタ２４のゲート・カソード間に接続された抵抗２８
とから構成されている。また、２９はダイオード３０を
介してコンデンサ２とダイオード４との接続点に接続さ
れた常開接点の停止スイッチ、３１はコンデンサ２の点
火コイル側とアース間に逆方向接続されたダイオード、
３２はコンデンサ３の点火コイル側とアース間に接続さ
れたダイオードである。FIG. 4 is a circuit diagram showing a conventional internal combustion engine ignition device.
In the figure, 1 is a magneto coil of a magneto generator driven by an engine (not shown), 2 is a first capacitor connected to one end of this magneto coil 1, and 3 is a diode 4 connected to a first capacitor 2 Second capacitor, 5
Is an ignition coil whose primary coil is connected to the capacitor 3, and whose secondary coil is connected to the spark plug 6. 7
Is a signal coil that generates an ignition signal in synchronization with the rotation of the engine, 8 and 9 are resistors and capacitors connected in parallel,
The bias circuit is connected to the signal coil 7 via the diode 10, and the other end is connected to the gate of the thyristor 11, which is a switching element. Reference numeral 12 is a lead angle control circuit, the input end of which is connected to the signal coil 7 via a bias circuit composed of a resistor 13 and a capacitor 14 and a diode 15, and the output end of which is connected to the gate of the thyristor 11. The anode of the thyristor 11 is connected between the diode 4 and the capacitor 3, and the cathode is grounded. Further, 16 is a resistor connected between the gate and cathode of the thyristor 11, and 17 is the advance control circuit 1.
It is a resistor connected between the input terminal of 2 and ground. Reference numeral 18 denotes a power supply circuit, which includes a diode 19, a resistor 20, a capacitor 21 connected in series to both ends of the power generation coil 1, and a zener diode 22 connected in parallel with the capacitor 21. A constant voltage circuit 23 includes thyristors 24 connected to both ends of the power generation coil 1 and resistors 25 and 26 connected in series between the ignition coil 5 side of the capacitor 2 and the ground.
A Zener diode 27 connected between the connection point of the resistors 25 and 26 and the gate of the thyristor 24, and a resistor 28 connected between the gate and cathode of the thyristor 24.
It consists of and. Further, 29 is a stop switch having a normally open contact connected to a connection point between the capacitor 2 and the diode 4 via a diode 30, 31 is a diode reversely connected between the ignition coil side of the capacitor 2 and the ground,
Reference numeral 32 is a diode connected between the ignition coil side of the capacitor 3 and the ground.
次に動作について説明する。機関が回転し発電コイル１
に電圧が発生すると、その負半数は発電コイル１−ダイ
オード３１−コンデンサ２−発電コイル１の径路を通り
コンデンサ２を充電する。そして正半波はこのコンデン
サ２の充電分と合計されてダイオード４−コンデンサ３
−ダイオード３２−発電コイル１の径路でコンデンサ３
を充電する。すなわちコンデンサ３は発電コイル１発生
電圧の２倍の電圧に充電される。そしてコンデンサ３の
充電電圧が所定値を超え、抵抗２５，２６の分圧電圧が
ツエナダイオード２７のツエナ電圧以上になるとサイリ
スタ２４はそのゲートに電圧が印加されて導通し、発電
コイル１の正半波は短絡されてコンデンサ３の充電電圧
は所定電圧以下に制御される。Next, the operation will be described. The engine rotates and the generator coil 1
When a voltage is generated, the negative half of the voltage passes through the path of the power generation coil 1-diode 31-capacitor 2-the power generation coil 1 to charge the capacitor 2. The positive half-wave is summed with the charged amount of this capacitor 2 to form a diode 4-capacitor 3
-Diode 32-Capacitor 3 in the path of the generator coil 1
To charge. That is, the capacitor 3 is charged to twice the voltage generated by the magneto coil 1. Then, when the charging voltage of the capacitor 3 exceeds a predetermined value and the divided voltage of the resistors 25 and 26 becomes equal to or higher than the zener voltage of the zener diode 27, the thyristor 24 is applied with a voltage to its gate to conduct, and the positive half of the magneto coil 1 is connected. The waves are short-circuited and the charging voltage of the capacitor 3 is controlled to be below a predetermined voltage.
一方、信号コイル７の正半波はダイオード１０および抵
抗８，コンデンサ９からなるバイアス回路を介してサイ
リスタ１１のゲートに印加され、サイリスタ１１が導通
するとコンデンサ３の充電電荷はこのサイリスタ１１を
通して点火コイル５の１次コイルに放電され、その２次
コイルには高電圧が発生して点火プラグ６で火花放電が
行われる。すなわち信号コイル７の正半波によりイニシ
ャル側の点火が行われる。また信号コイル７の負半波は
抵抗１７を介して進角制御回路１２に入力され、進角制
御回路１２はこの信号に基づいて点火時期演算を行い、
所定の点火時期に点火信号を送出しサイリスタ１１を導
通させる。すなわち進角制御回路１２の点火信号によっ
て進角側の点火が行われる。On the other hand, the positive half wave of the signal coil 7 is applied to the gate of the thyristor 11 via a bias circuit composed of the diode 10, the resistor 8 and the capacitor 9, and when the thyristor 11 is turned on, the charge stored in the capacitor 3 passes through the thyristor 11 and the ignition coil. 5 is discharged to the primary coil, a high voltage is generated in the secondary coil, and spark discharge is performed by the spark plug 6. That is, the ignition on the initial side is performed by the positive half wave of the signal coil 7. The negative half-wave of the signal coil 7 is input to the advance angle control circuit 12 via the resistor 17, and the advance angle control circuit 12 calculates the ignition timing based on this signal.
An ignition signal is sent at a predetermined ignition timing to make the thyristor 11 conductive. That is, ignition on the advance side is performed by the ignition signal of the advance control circuit 12.
また電源回路１８は発電コイル１の正半波を入力してツ
エナダイオード２２で電圧制御を行い、所定の定電圧を
進角制御回路１２に供給する。Further, the power supply circuit 18 inputs the positive half wave of the power generation coil 1 and controls the voltage with the Zener diode 22, and supplies a predetermined constant voltage to the advance angle control circuit 12.
更に停止スイッチ２９は機関の点火動作を無効にするも
ので、この停止スイッチ２９を閉成するとコンデンサ２
の出力が側路されてコンデンサ３の充電は行われず、従
って点火プラグ６での火花放電は生じなくなる。またダ
イオード３０によりバッテリ等の誤接続による回路の保
護が行われている。Further, the stop switch 29 disables the ignition operation of the engine. When the stop switch 29 is closed, the capacitor 2
Is bypassed and the capacitor 3 is not charged, so that spark discharge at the spark plug 6 does not occur. In addition, the diode 30 protects the circuit due to incorrect connection of a battery or the like.
従来の内燃機関点火装置は上記のように構成されてお
り、定電圧回路２３は第５図に示すようにコンデンサ３
の充電電圧Ｖcが破線のように高くなり過ぎて素子の耐
圧や点火コイルの耐圧を超えないよう動作する。しかし
ながら定電圧回路２３のサイリスタ２４が導通すると発
電コイル１の出力が短絡されるため、電源回路１８の出
力電圧Ｖccが第５図に示すように定電圧制御できないレ
ベルまで低下してしまう問題があった。この様子を示し
たのが第６図〜第９図であり、第６，７図は回転数Ｎ1
におけるサイリスタ２４のアノード電圧すなわち発電コ
イル出力電圧Ｖa波形及び電源回路１８の出力電圧Ｖcc
波形、第８，９図は回転数Ｎ2におけるＶaおよびＶccの
電圧波形である。なお、ここでは発電コイル１が１２極
の場合を示している。すなわちＮ2では定電圧回路２３
が動作しないため発電コイル１の正半波は短絡されず、
Ｖccの第９図に示すように略一定の電圧を維持するが、
定電圧回路２３は動作するＮ1では発電コイル１の正半
波が短絡され、Ｖccは第７図に示すように著しく低下す
る場合があり、このような電圧低下が発生すると進角制
御回路１２が誤動作する恐れがあった。The conventional internal combustion engine ignition device is configured as described above, and the constant voltage circuit 23 includes the capacitor 3 as shown in FIG.
The charging voltage Vc of 1 is operated so as not to exceed the withstand voltage of the element and the withstand voltage of the ignition coil as shown by the broken line. However, when the thyristor 24 of the constant voltage circuit 23 is turned on, the output of the generator coil 1 is short-circuited, so that there is a problem that the output voltage Vcc of the power supply circuit 18 drops to a level at which constant voltage control is not possible, as shown in FIG. It was This state is shown in FIGS. 6 to 9, and FIGS. 6 and 7 show the rotation speed N 1
Of the anode voltage of the thyristor 24, that is, the waveform of the generator coil output voltage Va and the output voltage Vcc of the power supply circuit 18 at
Waveforms, FIGS. 8 and 9 are voltage waveforms of Va and Vcc at the rotation speed N 2 . In addition, the case where the magneto coil 1 has 12 poles is shown here. That is, in N 2 , the constant voltage circuit 23
Does not work, the positive half wave of the generator coil 1 is not short-circuited,
Vcc maintains a substantially constant voltage as shown in FIG.
When the constant voltage circuit 23 operates, the positive half-wave of the magneto coil 1 may be short-circuited at N 1 and Vcc may be significantly reduced as shown in FIG. 7. When such a voltage reduction occurs, the advance control circuit 12 Could malfunction.
この考案は上記の問題点を解決するためになされたもの
で、電源回路の出力電圧低下を既存の回路を大幅に改造
せず簡易な構成で防止することのできる内燃機関点火装
置を得ることを目的とする。The present invention has been made to solve the above problems, and it is an object of the present invention to obtain an internal combustion engine ignition device capable of preventing a decrease in output voltage of a power supply circuit with a simple structure without significantly modifying an existing circuit. To aim.
この考案に係る内燃機関点火装置は、発電コイルの出力
で充電される第１のコンデンサ、この第１のコンデンサ
の充電電圧と前記発電コイルの出力電圧で充電される第
２のコンデンサ、所定の点火時期に導通し、前記第２の
コンデンサの充電電荷を点火コイルに放電させるスイッ
チング素子、前記発電コイルの出力を短絡制御して前記
第２のコンデンサの充電電圧を定電圧制御する定電圧回
路、前記第１のコンデンサの点火コイル側をダイオード
を介して短絡して点火動作を無効にする停止スイッチ、
その電源を、前記発電コイル出力と前記停止スイッチへ
の通電路を介して供給される前記第１のコンデンサの点
火コイル側の電荷とする電源回路を備えたものである。An internal combustion engine ignition device according to the present invention comprises a first capacitor charged by an output of a power generating coil, a second capacitor charged by a charging voltage of the first capacitor and an output voltage of the power generating coil, and a predetermined ignition. A switching element which is turned on at a certain time and discharges the electric charge charged in the second capacitor to an ignition coil; a constant voltage circuit which short-circuits the output of the power generation coil to control the charging voltage of the second capacitor by a constant voltage; A stop switch for disabling the ignition operation by short-circuiting the ignition coil side of the first capacitor via a diode,
A power supply circuit is provided, which uses the power supply as the electric charge on the ignition coil side of the first capacitor that is supplied via the power generation coil output and the energization path to the stop switch.
この考案においては、定電圧回路が動作して発電コイル
出力が短絡された場合、電源回路には第１のコンデンサ
の点火コイル側の電圧が停止スイッチへの通電路を介し
て供給されるため、電源回路における定電圧回路動作時
の電圧低下が防止される。In this invention, when the constant voltage circuit operates and the output of the generator coil is short-circuited, the voltage on the ignition coil side of the first capacitor is supplied to the power supply circuit through the energizing path to the stop switch. It is possible to prevent a voltage drop during the operation of the constant voltage circuit in the power supply circuit.
第１図はこの考案の一実施例による内燃機関点火装置の
構成を示す図である。図中、１〜３２は第４図の従来装
置と同様であるため対応する部分の同一符号を付してそ
の説明を省略する。３３は停止スイッチ２９の通電路と
電源回路１８の入力との間に設けられた抵抗で、一端は
ダイオード30のカソードに、他端は抵抗２０とコンデン
サ２１の接続点に接続されている。またここで抵抗３３
の抵抗値は３０KΩ程度、抵抗２０は約６KΩに設定さ
れ、抵抗３３の方が大きな抵抗値となっている。FIG. 1 is a diagram showing the configuration of an internal combustion engine ignition device according to an embodiment of the present invention. In the figure, reference numerals 1 to 32 are the same as those of the conventional apparatus shown in FIG. 4, and therefore, corresponding parts are designated by the same reference numerals and the description thereof is omitted. A resistor 33 is provided between the energizing path of the stop switch 29 and the input of the power supply circuit 18, one end of which is connected to the cathode of the diode 30 and the other end of which is connected to the connection point of the resistor 20 and the capacitor 21. Also here resistor 33
Is set to about 30 KΩ, the resistance 20 is set to about 6 KΩ, and the resistance 33 has a larger resistance value.
このように構成された内燃機関点火装置は、電源回路１
８の電源入力は発電コイル１の出力Ｖaとコンデンサ２
の点火コイル５側電圧Ｖbとからなるため、定電圧回路
２３が動作し、Ｖaがほとんど０になった場合でも、Ｖb
が停止スイッチ29への通電路より供給される。ここでＶ
bは第２図に示すように略一定の電圧であるため電源回
路18には安定した電源供給が行われその出力電圧Ｖccも
安定する。第３図はこの様子を示したもので、破線は電
源入力がＶbのみの場合、一点鎖線はＶaのみの場合であ
る。すなわち、Ｖaのみでは回転数によって電圧の落ち
込みがあり、またＶbは回転数に対して立上がりが早く
とれないため、Ｖa＋Ｖbによって相互の欠点をカバーし
安定した出力電圧Ｖccを得るものである。このため電源
回路18の負荷としての進角制御回路１２の動作も安定
し、電源電圧の不安定さによる誤動作のおそれも一掃さ
れる。しかも、停止回路の誤接続保護のためのダイオー
ド３０が電源回路１８の逆流防止用ダイオードを兼ねる
ため、別途にダイオードを設けなくて良く、抵抗３３の
追加のみという極めて少ない部品点数の増加で上記効果
が得られる。The internal combustion engine ignition device configured as described above has the power supply circuit 1
The power input of 8 is the output Va of the generator coil 1 and the capacitor 2
Of the ignition coil 5 side voltage Vb, the constant voltage circuit 23 operates and even if Va becomes almost 0, Vb
Are supplied from the energizing path to the stop switch 29. Where V
Since b is a substantially constant voltage as shown in FIG. 2, stable power supply is performed to the power supply circuit 18 and its output voltage Vcc is also stable. FIG. 3 shows this state. The broken line shows the case where the power source input is only Vb and the alternate long and short dash line shows the case where only Va is present. That is, since only Va has a voltage drop depending on the number of revolutions and Vb cannot rise quickly with respect to the number of revolutions, Va + Vb covers mutual defects and a stable output voltage Vcc is obtained. Therefore, the operation of the advance control circuit 12 as the load of the power supply circuit 18 is also stabilized, and the possibility of malfunction due to instability of the power supply voltage is eliminated. Moreover, since the diode 30 for protecting the erroneous connection of the stop circuit also serves as the backflow prevention diode of the power supply circuit 18, it is not necessary to separately provide a diode, and only the addition of the resistor 33 increases the number of parts, which is an extremely small increase in the number of components described above. Is obtained.
以上のようにこの考案によれば、電源回路の電源入力
を、発電コイル端と第１のコンデンサの点火コイル側に
接続された停止スイッチの通電路とから得るようにした
ので、定電圧回路動作時の電源回路の出力電圧の低下を
防止することができ、しかも部品点数の増加も極めて少
なく、コスト上昇もほとんどないという効果を有する。As described above, according to the present invention, since the power supply input of the power supply circuit is obtained from the power generation coil end and the energization path of the stop switch connected to the ignition coil side of the first capacitor, the constant voltage circuit operation is achieved. In this case, it is possible to prevent the output voltage of the power supply circuit from being lowered, the number of components is extremely small, and the cost is hardly increased.
第１図はこの考案の一実施例による内燃機関点火装置の
回路図、第２図は同内燃機関点火装置における第１のコ
ンデンサの点火コイル側端電圧Vbの波形図、第３図は同
内燃機関点火装置における電源回路の出力電圧を示す
図、第４図は従来の内燃機関点火装置の回路図、第５図
は同内燃機関点火装置における第２のコンデンサの充電
電圧と電源回路出力電圧とを示す図、第６図および第７
図は回転数Ｎ1における発電コイル出力電圧Ｖaの波形図
および電源回路出力電圧Ｖccの波形図、第８図および第
９図は回転数Ｎ2における発電コイル出力電圧Ｖaの波形
図および電源回路出力電圧Ｖccの波形図である。 １……発電コイル、２……第１のコンデンサ、３……第
２のコンデンサ、５……点火コイル、１１……サイリス
タ、１２……進角制御回路、１８……電源回路、２３…
…定電圧回路、２９……停止スイッチ、３０……ダイオ
ード、３３……抵抗。 なお、図中同一符号は同一または相当部分を示す。FIG. 1 is a circuit diagram of an internal combustion engine ignition device according to an embodiment of the present invention, FIG. 2 is a waveform diagram of an ignition coil side end voltage Vb of a first capacitor in the internal combustion engine ignition device, and FIG. FIG. 4 is a diagram showing an output voltage of a power supply circuit in the engine ignition device, FIG. 4 is a circuit diagram of a conventional internal combustion engine ignition device, and FIG. 5 is a charging voltage of a second capacitor and a power supply circuit output voltage in the internal combustion engine ignition device. Showing FIG. 6, FIG. 6 and FIG.
The figure shows the waveform diagram of the generator coil output voltage Va and the waveform diagram of the power supply circuit output voltage Vcc at the rotation speed N 1, and FIGS. 8 and 9 show the waveform diagram and the power supply circuit output of the generator coil output voltage Va at the rotation speed N 2 . It is a waveform diagram of a voltage Vcc. 1 ... Generator coil, 2 ... First capacitor, 3 ... Second capacitor, 5 ... Ignition coil, 11 ... Thyristor, 12 ... Advance control circuit, 18 ... Power supply circuit, 23 ...
... constant voltage circuit, 29 ... stop switch, 30 ... diode, 33 ... resistance. The same reference numerals in the drawings indicate the same or corresponding parts.
Claims (1)
デンサ、この第１のコンデンサの充電電圧と前記発電コ
イルの出力電圧で充電される第２のコンデンサ、所定の
点火時期に導通し、前記第２のコンデンサの充電電荷を
点火コイルに放電させるスイッチング素子、前記発電コ
イルの出力を短絡制御して前記第２のコンデンサの充電
電圧を定電圧制御する定電圧回路、前記第１のコンデン
サの点火コイル側をダイオードを介して短絡して点火動
作を無効にする停止スイッチ、その電源を、前記発電コ
イル出力と前記停止スイッチへの通電路を介して供給さ
れる前記第１のコンデンサの点火コイル側の電荷とする
電源回路を備えた内燃機関点火装置。1. A first capacitor charged by the output of a power generating coil, a second capacitor charged by the charging voltage of the first capacitor and the output voltage of the power generating coil, and conducting at a predetermined ignition timing, A switching element that discharges the electric charge charged in the second capacitor to an ignition coil, a constant voltage circuit that short-circuits the output of the power generation coil to control the charging voltage of the second capacitor by a constant voltage, and a first capacitor A stop switch for disabling the ignition operation by short-circuiting the ignition coil side via a diode, and the power source for the stop switch is supplied through the power generation coil output and the energizing path to the stop switch, and the ignition coil of the first capacitor. An internal combustion engine ignition device having a power supply circuit for charging the electric charge on the side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988051272U JPH066229Y2 (en) | 1988-04-14 | 1988-04-14 | Internal combustion engine ignition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988051272U JPH066229Y2 (en) | 1988-04-14 | 1988-04-14 | Internal combustion engine ignition device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01158566U JPH01158566U (en) | 1989-11-01 |
| JPH066229Y2 true JPH066229Y2 (en) | 1994-02-16 |
Family
ID=31277301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988051272U Expired - Lifetime JPH066229Y2 (en) | 1988-04-14 | 1988-04-14 | Internal combustion engine ignition device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH066229Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5176576B2 (en) * | 2008-02-08 | 2013-04-03 | 株式会社デンソー | Ignition coil drive device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60170070U (en) * | 1984-04-20 | 1985-11-11 | 三菱電機株式会社 | Capacitor charging/discharging engine ignition system |
| JPS62294765A (en) * | 1986-06-12 | 1987-12-22 | Mitsubishi Electric Corp | Ignition device of internal combustion engine |
-
1988
- 1988-04-14 JP JP1988051272U patent/JPH066229Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01158566U (en) | 1989-11-01 |
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