JP3460196B1 - Starting method and starting device for ignition device for internal combustion engine - Google Patents

Abstract

An ignition device for an internal combustion engine in which the microcomputer controls the ignition timing is to quickly start the microcomputer at the time of starting, thereby improving the starting performance of the engine. SOLUTION: An ignition timing signal is calculated based on a period detection signal obtained from a forward voltage component of an output voltage of a power generation coil, and a peak voltage detection signal and a starting voltage detection signal are obtained from a delay side reverse voltage component of an output voltage of the power generation coil. In the ignition device for a capacity discharge type internal combustion engine, which determines the output time point of the ignition signal in each speed range based on the cycle detection signal, the peak voltage detection signal, and the starting voltage detection signal, when starting by the recoil starter, the reverse voltage of the output voltage The charging voltage of the constant voltage power supply for charging the minute is quickly raised to the microcomputer starting voltage, and the starting of the internal combustion engine is easily and quickly obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ignition device for an internal combustion engine, and more particularly to a starting method and a starting device for a capacity discharge ignition device.

[0002]

2. Description of the Related Art In order to obtain safe and efficient operation of an internal combustion engine, reduction of fuel consumption rate, and purification of exhaust gas, it is strongly required to accurately control the ignition time point to a desired time point. A time point control is performed using a microcomputer (microcomputer) (for example, refer to Patent Document 1).

[0003]

[Patent Document 1] Japanese Patent Publication No. 7-26602

In the above-mentioned Patent Document 1, a power supply circuit for converting the output voltage of the generator coil (exciter coil) into a DC voltage is provided, and this power supply circuit is used as the power supply for the microcomputer. The ignition signal is given by the hour ignition position signal.

With this structure, it is possible to operate the microcomputer without using a battery, and it is possible to perform the ignition operation even at a low speed of the engine in which a voltage for operating the microcomputer cannot be obtained. Exert the function.

[0006]

However, in the above-mentioned prior art, since the pulsar coil is required in addition to the generator coil, the generator structure becomes complicated and high dimensional accuracy is required during assembly. Therefore, there was a problem that the handling was troublesome.

Further, since the ignition operation is performed even at a low speed of the engine in which the voltage for operating the microcomputer is not obtained, the operation of the engine at the low speed becomes extremely unstable. There was a problem that the operation of was likely to be unstable.

In order to solve the problems in the prior art, the structure of the generator is simplified and the operation at the time of starting the engine is stabilized, so that an ignition device having a simple structure and a small size can be obtained. Ignition device for internal combustion engine for enhancing safety (Japanese Patent Application No. 2002-11030)
The applicant has previously filed (see No. 5).

Japanese Patent Application No. 2002-1103 filed earlier
In No. 05, the rise of the charging voltage at the time of starting the internal combustion engine of the constant voltage power supply unit that charges the reverse voltage of the generator coil is caused by the action of the current limiting resistor provided in the input unit for ensuring safety. Therefore, the microcomputer cannot be started up promptly, and its starting characteristic is not always good because the recoil starter does not cause ignition unless the internal combustion engine is rotated at least 3 or 4 times. It was difficult.

The present invention, in the Japanese Patent Application No. 2002-110305 previously filed by the applicant of the present application, has a technical problem of promptly achieving the start-up of the microcomputer at the time of starting, thereby improving the starting performance of the engine. With the goal.

[0011]

[Means for Solving the Problems] [Means for Solving the Problems] Of the present invention for solving the above technical problems, the means for carrying out the invention according to claim 1 is driven by an ignition coil having an ignition plug connected to a secondary side and an internal combustion engine. The power generation coil in the high-voltage magnet generator and the charging capacitor that is provided on the primary side of the ignition coil and that is charged by the forward voltage of the output voltage of the power generation coil, conducts when the ignition signal is input, and charges the charging capacitor. A discharge switching element for discharging the primary coil of the ignition coil to the ignition circuit for a capacity discharge type internal combustion engine, the forward voltage of the output voltage being preset as a voltage value capable of obtaining a continuous ignition operation. The period detection signal generated at the ignition timing calculation start time when the period detection voltage value reached is input, and the rotational speed of the internal combustion engine is detected by the time between the adjacent period detection signals, A microcomputer unit that outputs an ignition signal to the discharge switching element when necessary, and a constant voltage power supply unit that charges the reverse voltage of the output voltage by limiting it to a part by the current limiting resistor and using this charging power to operate the microcomputer unit. When,
A method for starting an ignition device for an internal combustion engine, which incorporates an ignition timing control device having: This is to charge the voltage power supply unit and raise the charging voltage of the constant voltage power supply unit to a constant voltage range in which the microcomputer unit can be operated promptly.

According to the first aspect of the invention, the reverse voltage component of the output voltage can be almost directly charged to the constant voltage power source without being limited by the current limiting resistor. The charge of the power supply is charged very rapidly, and the charging voltage value is the microcomputer start voltage that is the voltage required to start the microcomputer of the microcomputer.
Since it reaches quickly, the microcomputer will be started up very early.

As described above, since the microcomputer starts up very early, the period detection signal necessary for generating the ignition signal can be surely output at the initial stage of the starting operation by that much. The ignition operation is surely generated.

According to a second aspect of the present invention, in addition to the configuration of the first aspect of the invention, the bypass path of the current limiting resistor of the constant voltage power source section is made conductive by the reverse voltage of the output voltage. is there.

According to the second aspect of the present invention, since the bypass path for the current limiting resistor of the constant voltage power supply section is formed at the same time when the reverse voltage component of the output voltage rises, the generated reverse voltage component is Almost as it is, the constant voltage power supply unit is quickly charged, so that the charging voltage of the constant voltage power supply unit reaches the microcomputer starting voltage extremely rapidly.

According to a third aspect of the present invention, in addition to the configuration of the first aspect of the invention, the first cycle detection signal is input to the microcomputer section to interrupt the bypass path of the current limiting resistor. is there.

According to the third aspect of the present invention, the absolute value of the forward voltage of the output voltage for generating the cycle detection signal is the absolute value of the reverse voltage of the output voltage of the microcomputer starting voltage. The constant voltage power supply is already fully charged when the cycle detection signal is output, and the microcomputer is definitely starting up. Therefore, the bypass path of the current limiting resistor is cut off, and the rapid charging of the constant voltage power supply unit is stopped.

As described above, the reason why the rapid charging is stopped as soon as possible and the normal charging state is restored is that the voltage (output voltage) generated in the magneto coil of the ignition circuit is lowered, This is because the energy released to the secondary side of No. 1 is reduced and the output voltage waveform of the magneto coil is distorted, which causes an inconvenience that an error occurs in the ignition timing.

Further, the means of the invention according to claim 4 of the present invention is an ignition coil having an ignition plug connected to a secondary side thereof, a power generation coil in a high-pressure magnet generator driven by an internal combustion engine, and an ignition coil. For discharging, which is provided on the primary side of the ignition coil, and which is charged by the forward voltage of the output voltage of the generator coil, conducts when the ignition signal is input, and discharges the charge of the charging capacitor to the primary coil of the ignition coil. In the ignition circuit for a capacity discharge type internal combustion engine having a switching element, the forward voltage is a voltage value at which a continuous ignition operation can be obtained, at the ignition timing calculation start time point when a preset cycle detection voltage value is reached. Input the generated cycle detection signal,
The rotation speed of the internal combustion engine is detected from the time between the adjacent cycle detection signals, and the microcomputer unit that outputs the ignition signal to the discharge switching element when necessary and the reverse voltage component of the output voltage are integrated by the current limiting resistor. Is a starting device for an internal combustion engine ignition device having an ignition timing control device having a constant voltage power supply unit for charging the limited charge unit and operating the microcomputer unit by this charging power, Connected in parallel with the current limiting resistor and connected between the charging switching element that conducts quickly due to the reverse voltage of the output voltage and the control terminal of this charging switching element and the ground, and the trigger signal from the microcomputer section. The quick charging unit, which is composed of a turn-off transistor that turns on and shuts off the charging switching element, is assembled to the constant voltage power supply unit.

According to the fourth aspect of the invention, the charging switching element connected in parallel with the current limiting resistor of the constant voltage power supply section is quickly conducted by the reverse voltage of the output voltage, and the current limiting resistor is connected. By forming the bypass path of (1), most of the generated reverse voltage is charged as it is to the constant voltage power supply unit, whereby the constant voltage power supply unit is rapidly charged.

Since the turn-off transistor is turned on by the trigger signal from the microcomputer section to stop the rapid charging operation of the rapid charging section, the stopping of the rapid charging operation of the rapid charging section can be freely controlled by the microcomputer section. You can do it.

Therefore, for example, by promptly outputting the trigger signal from the microcomputer section to the turn-off transistor in response to the input of the first cycle detection signal, the starting performance of the internal combustion engine is adversely affected by the rapid charging of the constant voltage power supply section. Can be prevented from appearing.

The quick charging section is basically composed of a charging switching element that self-triggers with a reverse voltage of the output voltage and a turn-off transistor that shuts off the charging switching element by a trigger signal from the microcomputer section. As a result, its configuration is extremely simple.

According to a fifth aspect of the invention, in addition to the configuration of the fourth aspect of the invention, a rectifying diode is connected in series with the charging switching element.

According to the fifth aspect of the present invention, when there is no rectifying diode having a reverse current blocking capability between the voltage charging section of the constant voltage power source section and the current limiting resistance, the charging switching element is provided. When the power is cut off, the inconvenience that the charge stored in the voltage charging unit of the constant voltage power supply unit is discharged through the turn-off transistor does not occur.

The invention according to claim 6 is the invention according to claim 4 or 5.
In addition to the configuration of the invention described above, a protection resistance having a small resistance value is connected in series with the charging switching element.

According to the sixth aspect of the present invention, a large reverse voltage component of the output voltage is prevented from acting as a powerful surge on the charging switching element and the electronic components of the constant voltage power supply unit. The reverse voltage component is received by the protection resistor and then supplied to the electronic components of the charging switching element and the constant voltage power supply unit, thereby protecting the charging switching element and the electronic components of the constant voltage power supply unit from the reverse voltage component.

According to a seventh aspect of the present invention, in addition to the configuration of the fourth, fifth or sixth aspect of the invention, a thyristor is used as a charging switching element.

According to the seventh aspect of the invention, the thyristor self-triggers by the reverse voltage component of the output voltage, so that the thyristor can be surely conducted by the rising of the reverse voltage component. Achieves quick and reliable quick charging of the reverse voltage in the section.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an electric circuit diagram showing a circuit configuration of an ignition timing control device 1 in which an ignition device for an internal combustion engine is assembled in combination with a capacity discharge type ignition circuit. 1
Is composed of a constant voltage power supply unit 2 in which a quick charging unit 9 is assembled, a microcomputer unit 3, a periodic signal generating unit 4, and a voltage detecting unit 5.

The capacity discharge type ignition circuit in which the ignition timing control device 1 is assembled includes an ignition coil 8 to which an ignition plug P is connected on the secondary side, and a power generation which constitutes a high pressure magnet generator driven by an internal combustion engine. A coil 6 and a charging capacitor c6 provided on the primary side of the ignition coil 8 and charged by the forward voltage e1 of the output voltage E of the generator coil 6, and the primary of the ignition coil 8 by conducting the electric charge of the charging capacitor c6. It is configured to have a discharge switching element 7 for discharging the coil.

The forward voltage component e1 of the output voltage E induced in the power generation coil 6 passes through the charging diode d2 and is charged in the charging capacitor c6. The electric charge charged in the charging capacitor c6 is discharged energy regeneration diode d6. Are connected in antiparallel and the gate switching resistor r8 is connected to the discharge switching element 7, which is a thyristor, to discharge the primary coil of the ignition coil 8.
A high voltage is induced in the secondary coil to generate a spark discharge in the spark plug P, and the internal combustion engine is ignited.

The constant voltage power supply unit 2 of the ignition timing control device 1 is
Reverse voltage e2 of the output voltage E of the magneto coil 6 (see FIG. 2)
To supply an output of a constant voltage value to the microcomputer unit 3, the periodic signal generation unit 4 and the voltage detection unit 5, which is a reverse voltage component of the output voltage E of the generator coil 6 rectified by the rectifier diode d3. e2 is charged through the current limiting resistor r1 to the power supply capacitor c1 to which the overvoltage preventing Zener diode 23 is connected in parallel, and when this charging voltage reaches a preset constant voltage value, a voltage stabilizing Zener diode is added to the base. The voltage stabilizing transistor 21, which connects 22 and the base resistor r2, becomes conductive and outputs a constant voltage.

The constant voltage value of the constant voltage power supply unit 2 is set to a value close to the upper limit value of the operable voltage of the microcomputer 30 of the microcomputer unit 3, specifically, 5V, whereby the constant voltage output signal Even if surge noise invades, it is not affected by this surge noise.

The quick charging unit 9 connected in parallel with the current limiting resistor r1 of the constant voltage power supply unit 2 has a protection resistor r11 connected in parallel with the current limiting resistor r1 and a bias resistor r9 between the anode and the gate of the thyristor. Is a series circuit of a charging switching element 90 in which a gate stabilizing resistor r10 is connected between the gate and the cathode, and a rectifying diode d7, and a turn-off transistor connected between the gate of the charging switching element 90 and ground. And 91.

The protection resistor r11 has a surge voltage for the reverse voltage e2 of the output voltage E with respect to the charging switching element 90 of the quick charging unit 9, the power supply capacitor c1 of the constant voltage power supply unit 2, and the voltage stabilizing transistor 20. When the current limiting resistance r1 is 2 KΩ, about 10 Ω is suitable.

The rectifying diode d7 prevents the charge stored in the power supply capacitor c1 from being discharged through the turn-off transistor 91 when the turn-off transistor 91 is turned on.
1 is not necessary when a rectifying diode is provided between the power supply capacitor c1 and the power supply capacitor c1.

The turn-off transistor 91 is turned on by the input of the trigger signal from the microcomputer unit 3 to its base, and holds that state until the input of the trigger signal is stopped.

The microcomputer unit 3 is composed of a microcomputer 30 and a reset IC 32, and the reset IC 32 inserted and connected in parallel with the output terminal of the constant voltage power supply unit 2 has an output terminal to which a reset noise removing capacitor c3 is connected. Is connected to the reset port of the microcomputer 30, and when the output voltage value of the constant voltage power supply unit 2 reaches a preset constant value, the microcomputer 30 is started up.

Microcomputer 3 with clock generator 31 assembled
0 inputs the constant voltage signal from the constant voltage power supply unit 2 via the power supply noise removing capacitor c2, outputs the ignition signal s4 via the ignition signal supply resistor r3, and inputs the first cycle detection signal s1. Accordingly, a trigger signal is promptly output to the turn-off transistor 91 of the quick charging unit 9, and the output of this trigger signal is continued until the internal combustion engine is stopped.

The periodic signal generating section 4 supplies a constant voltage signal from the constant voltage power source section 2 to the signal generating transistor 40 through the waveform shaping resistor r5, and the signal generating transistor 4
If the forward voltage component e1 of the output voltage E of the generator coil 6 exceeds the preset cycle detection voltage value v1 by the series circuit of the detection Zener diode 41 connected to the base of 0 and the voltage detection resistor r4, The signal generation transistor 40 is turned on, and the potential at the connection point between the signal generation transistor 40 and the waveform shaping resistor r5 is output to the microcomputer unit 3 as the cycle detection signal s1. The signal generation transistor 4
A series circuit of a noise removal diode d1 and a noise removal capacitor c4 is connected in parallel to the series circuit of 0 and the waveform shaping resistor r5.

The voltage detection unit 5 adds the delay side reverse voltage component e2 of the output voltage E of the generator coil 6 to the series circuit of the voltage setting voltage dividing resistors r6 and r7, and adds both voltage setting voltage dividing resistors r6,
The voltage at the voltage dividing point of r7 is output to the microcomputer unit 3 as a voltage signal s6. The voltage dividing resistors r6 and r7 for setting both voltages are
A noise removing capacitor c5 is connected between the voltage dividing point and the ground.

The cycle detection voltage value v1 set by the cycle signal generator 4 is set to, for example, about 40 V according to the value of the forward voltage component e1 obtained in the rotation speed range where the internal combustion engine can be stably started. However, this forward voltage e
Since the constant voltage output signal of the constant voltage power supply unit 2 is output before the value of 1 reaches the cycle detection voltage value v1, the microcomputer 30 is started up before the output of the cycle detection signal s1.

When the cycle detection signal s1 is input, the microcomputer 30 sets the input time as the ignition timing calculation start time t1 and measures the time until the next ignition timing calculation start time t1 to calculate the rotation speed. The ignition timing corresponding to the calculated rotation speed is selected from a large number of prestored data, and the ignition timing calculation signal s5 of the cycle in which the next ignition timing calculation start time t1 is located is created.

When the voltage signal s6 is input from the voltage detector 5, the microcomputer 30 inputs this to the A / D converter, and the voltage value of the delay side reverse voltage e2 reaches the peak voltage value v2. Peak voltage detection signal s2 for detecting that
And a start-up voltage detection signal s3 that detects that the start-up voltage value v3 is located as close as possible to the top dead center of the internal combustion engine and can be detected reliably, for example, the start-up voltage value v3 set to 0.3V.
And create.

Next, the operation of the ignition device will be described in order from the start. When the recoil starter is pulled to rotate the internal combustion engine, an output voltage E is induced in the generator coil 6, the forward voltage e1 of the output voltage E is charged to the charging capacitor c6, and most of the reverse voltage e2 is rapidly increased. The power supply capacitor c1 of the constant voltage power supply unit 2 is charged through the charging unit 9.

The actual operation diagram shown in FIG. 2 shows an example of the case where the first coil is not caught well by the recoil starter, and it is clear from the operation diagram of the output voltage E of FIG. 2 (a). In addition, although the rising of the reverse voltage component e2 is insufficient, it is slightly smaller than the charging voltage of the constant voltage power supply unit 2, but the voltage change is substantially the same, and the cycle detection signal s1 shown in FIG. Is the charging voltage of the constant voltage power supply unit 2,
It shows that the microcomputer starting voltage v4 (reset release voltage, which is usually 2.2v) is reached by charging the backward delay voltage e2 of the first rotation of the internal combustion engine.

When the voltage value output from the constant voltage power supply unit 2 reaches the microcomputer starting voltage v4, it is reset by the reset IC 32.
Is detected and the microcomputer 30 is reset and then started up, the microcomputer 30 enters a standby state (power saving mode) after performing initialization.

From this state, when the internal combustion engine is rotated for the second time by the recoil starter, the cycle detection voltage value v1
The period detection signal s1 falls due to the forward voltage component e1 of the output voltage E that has risen up to and is input to the microcomputer 30.

When the first cycle detection signal s1 is input (hereinafter, refer to FIG. 5), a preset starting voltage value v3 is detected from the voltage signal s6 which is input immediately thereafter, and the starting voltage detection signal s3 is detected. The ignition signal s4 (see FIG. 2) is immediately generated in accordance with the generation of the starting voltage detection signal s3.
(See (c)) is a switching element 7 for discharging the ignition circuit.
To start the internal combustion engine safely and surely.

When the internal combustion engine is started, the microcomputer 30
Performs the process shown in the main routine of which the flowchart is shown in FIG. That is, upon reset cancellation, the process starts at step m1, completes the initial setting at step m2, and then enters the standby state at step m3.

In this state, when the first cycle detection signal s1 is input, the cycle detection interrupt process shown in the flowchart of FIG. 4 starts at step n1 and proceeds to step n2.
After confirming the input of the cycle detection signal s1 at step n3,
Then, the quick charging unit 9 is turned off, that is, the trigger signal is applied to the turn-off transistor 91 to turn off the charging switching element 90 and the current limiting resistor r1 exerts its action. Return to i.

In the main routine, in step m4, it is determined whether or not the cycle measurement is performed according to the input cycle detection signal s1. Since the cycle measurement cannot be performed for the first cycle detection signal s1, the step m3 is directly performed. However, since the cycle measurement is performed for the cycle detection signal s1 from the second time onward, the process proceeds to step m5, the ignition timing is calculated, and then the process returns to step m3.

Since the ignition operation with the ignition time at the time of start as the start time t2 is performed safely and surely without causing a ketching, the rotation operation is not always stable, that is, at the start-up time, that is, in the start mode, Set time or speed Set lower speed limit x (eg 1500r
In the speed range below pm), the ignition time is set to the start time t2 and the operation is performed.

When the rotation speed of the internal combustion engine becomes equal to or lower than the lower limit speed x after the start mode has elapsed, the ignition timing obtained by the ignition timing calculation signal of the same cycle is peaked as shown in FIG. Counting immediately after the detection time t3,
After this counting, the ignition signal s4 is output.

In this way, the flywheel effect is not sufficiently exerted, the rotation of the internal combustion engine is not always stable, and the calculated ignition timing is the peak detection time t3 in the speed range where the rotational speed of the internal combustion engine is the lower limit speed x or less. By setting the ignition timing by counting immediately after, even if the rotation operation of the internal combustion engine becomes unstable and the cycle period becomes long, the ignition timing becomes large relative to the top dead center of the internal combustion engine. There is no advance, which ensures that the internal combustion engine continues to fire.

If the rotational speed of the internal combustion engine rises to a speed range from a lower limit speed x at which the rotational operation is stable to a standby speed y (for example, 4000 rpm) preset as a speed at which a load can be coupled, As shown in FIG. 7, the ignition signal s4 is output immediately after the peak detection time t3 at which the peak voltage detection signal s2 detecting the peak voltage value v2 is output.

In this speed range from the lower limit speed x to the standby speed y, the ignition time point is immediately after the peak detection time point t3, but this "immediately after the peak detection time point t3".
Means "after confirming the peak voltage detection", and this confirmation process is set so that it becomes longer as the rotation speed becomes lower, so that a slight advance angle of ignition timing in this speed range is set. Trying to get.

The rotational speed of the internal combustion engine is a preset operating speed z, which is almost the upper limit at which efficient operation can be obtained from the standby speed y at which the load may be combined to operate.
In the speed range up to (for example, 8000 rpm), FIG.
As shown in, the rotation speed at this ignition timing calculation start time t1 is calculated from the time from the ignition timing calculation start time t1 which is the input time of the previous cycle detection signal s1 to the current ignition timing calculation start time t1. An ignition timing calculation signal s5 for selecting an ignition timing signal which is calculated and set and stored in advance corresponding to the calculated rotation speed is obtained, and the ignition timing signal obtained by this ignition timing calculation signal s5 is calculated for this ignition timing. Counting is started from the starting time point t1, and the ignition signal s4 is output after the time of the ignition timing signal has elapsed.

In the speed range from the standby speed y to the operating speed z, the advance angle most suitable for each rotational speed is obtained, so that the output of the internal combustion engine is sufficiently increased and the efficiency of the combined load is increased. You can get good operation.

When the rotational speed of the internal combustion engine exceeds the operating speed z and rises, as shown in FIG.
5 becomes longer than the obtained ignition timing signal, and thus the ignition signal s4 cannot be obtained. Therefore, the ignition timing signal obtained by the ignition timing calculation signal s5 of the previous cycle is directly used as it is. Used in the cycle.

In this case, as a matter of course, the efficiency of the internal combustion engine is lowered, so that the increase in speed of the internal combustion engine is suppressed, and the effect of preventing overspeed is exhibited.

When the quick charging section 9 is not assembled to the constant voltage power source section 2, the output voltage E is reversed to the output voltage E as shown in FIG. 10 (a) by the first rotation of the internal combustion engine by the recoil starter. Although a voltage component e2 is generated, due to the limiting action of the current limiting resistor r1, as shown in FIG.
The voltage value of the cycle detection signal s1 is suppressed to a low value, and the microcomputer starting voltage v4 cannot be reached at all.

From this state, when the internal combustion engine is rotated by the recoil starter for the second time, the cycle detection signal s1
10 does not reach the microcomputer starting voltage v4 by the advancing side reverse voltage e2 of the output voltage E, but does not reach the microcomputer starting voltage v4 and reaches the microcomputer starting voltage v4 for the first time by the delay side reverse voltage e2. As shown in c),
The ignition signal s4 is first output when the internal combustion engine is rotated by the recoil starter for the third time.

As described above, in the case where the rapid charging section 9 is not provided, the rising of the charging voltage of the constant voltage power source section 2 can be suppressed to a low level by the limiting action of the current limiting resistor r1 of the constant voltage power source section 2. As shown in 10, even if the recoil starter is relatively caught, the recoil starter must rotate the internal combustion engine at least three times or more.

[0066]

Since the present invention has the above-mentioned structure, it has the following effects. According to the first aspect of the invention, since the reverse voltage component of the output voltage can be almost directly charged to the constant voltage power supply unit without being limited by the current limiting resistor, the constant voltage power supply unit is charged. The voltage can be raised rapidly, which allows the microcomputer to be started up very early, and an earlier start of the ignition operation can be reasonably and surely obtained.

The rapid charging of the constant voltage power source for the reverse voltage of the output voltage is achieved only by bypassing the current limiting resistor, so that it can be stably and easily achieved by simple processing.

According to the second aspect of the present invention, the bypass path for the current limiting resistor of the constant voltage power supply section can be formed at the same time when the reverse voltage of the output voltage rises. The charging voltage can be made to reach the microcomputer starting voltage very quickly, and the microcomputer can be started up faster.

According to the third aspect of the present invention, the output voltage of the generator coil is prevented from lowering so that a reliable ignition operation can be obtained, and the output voltage waveform is distorted so that an error occurs in the ignition timing. It can be prevented from occurring and a stable ignition operation can be obtained.

According to the fourth aspect of the present invention, the charging switching element of the quick charging section is quickly turned on by the reverse voltage of the output voltage. Therefore, most of the generated reverse voltage is directly supplied to the constant voltage power source. The charging section can be charged, which ensures rapid charging of the constant voltage power supply section.

Since the turn-off transistor is turned on by the trigger signal from the microcomputer unit to stop the rapid charging operation of the rapid charging unit, the microcomputer unit can freely control the stopping of the rapid charging operation of the rapid charging unit. This makes it possible to prevent the start-up performance of the internal combustion engine from being adversely affected by the rapid charging of the constant voltage power supply unit.

Further, the quick charging section is basically composed of a charging switching element which self-triggers by the reverse voltage of the output voltage and a turn-off transistor which shuts off the charging switching element by a trigger signal from the microcomputer section. Therefore, the configuration is extremely simple and can be implemented easily and inexpensively.

According to the fifth aspect of the present invention, when there is no rectifying diode having a reverse current blocking capability between the voltage charging section of the constant voltage power source section and the current limiting resistor, the charging switching element is cut off. At this time, the inconvenience that the charge of the voltage charging section of the constant voltage power source section is discharged through the turn-off transistor does not occur, thereby ensuring stable operation of the constant voltage power source section.

According to the sixth aspect of the present invention, the charging switching element and the electronic components of the constant voltage power supply section are safely protected from the reverse voltage of the output voltage to enhance the safety of the constant voltage power supply section. There is.

According to the invention of claim 7, the thyristor self-triggers by the reverse voltage of the output voltage.
Due to the rise of the reverse voltage, it is possible to surely conduct electricity, so that the constant voltage power supply section can rapidly and reliably achieve the reverse voltage.

[Brief description of drawings]

FIG. 1 is an electric circuit diagram showing an example of a circuit configuration of an ignition device embodying the present invention.

FIG. 2 is a measurement operation diagram showing an operation example at the start of activation of the present invention.

FIG. 3 is a flowchart showing a main routine of the ignition device embodying the present invention.

FIG. 4 is a flowchart showing an example of interrupt processing of the ignition device embodying the present invention.

FIG. 5 is an operation explanatory diagram showing an operation example at the time of startup of the present invention.

FIG. 6 shows an example of an operation in a range of a lower speed limit of the present invention,
Operation explanatory diagram.

FIG. 7 is an operation explanatory diagram showing an operation example in the range from the lower limit speed to the standby speed of the present invention.

FIG. 8 is an operation explanatory diagram showing an operation example in the range from the standby speed to the operating speed of the present invention.

FIG. 9 is an operation explanatory diagram showing an operation example in a range equal to or higher than the operating speed of the present invention.

FIG. 10 is an actual measurement operation diagram showing an operation example at the start of activation in the case where a quick charging unit is not provided.

[Explanation of symbols]

1; Ignition timing control device 2; Constant voltage power supply 20; Voltage stabilizing transistor 21; Voltage-stabilized Zener diode 22; Zener diode for overvoltage prevention c1; Power supply capacitor r1; current limiting resistor r2: Base resistance 3; Microcomputer section 30; Microcomputer 31; Clock generator 32; Reset IC c2; Power supply noise removal capacitor c3; Reset noise removing capacitor r3; resistance for ignition signal supply 4; Periodic signal generator 40; Signal generating transistor 41; Detection Zener diode r4; Voltage detection resistor r5: Wave shaping resistor d1; Noise removing diode c4: Noise removal capacitor 5; Voltage detector r6; Voltage dividing resistor for voltage setting r7: Voltage dividing resistor for voltage setting c5; Noise removal capacitor 6; Generator coil 7; Discharge switching element 8; Ignition coil P; Spark plug c6; Charging capacitor d2; Charging diode d3; rectifier diode d4; rectifier diode d5; rectifier diode d6; Discharge energy regeneration diode r8: Gate stabilizing resistor 9; Rapid charging section 90; Switching element for charging 91; Turn-off transistor d7; Rectifying diode r9; Bias resistance r10: Gate stabilizing resistor r11; protection resistance E: Output voltage e1; Forward voltage e2; reverse voltage v1; Period detection voltage value v2; Peak voltage value v3; Starting voltage value v4: Microcomputer starting voltage s1; Period detection signal s2; Peak voltage detection signal s3; Starting voltage detection signal s4; ignition signal s5: Ignition timing calculation signal s6; voltage signal t1; start time of ignition timing calculation t2; at the time of startup t3; Peak detection time x; Lower speed limit y; Standby speed z; operating speed

Claims (7)

(57) [Claims] 1. An ignition coil (8) having a spark plug (P) connected to a secondary side thereof, a power generation coil (6) in a high pressure magnet generator driven by an internal combustion engine, and a primary of the ignition coil (8). Is provided on the side of the output voltage (E) of the generator coil (6) for the forward voltage (e
1) charging capacitor (c6), which is charged by the ignition signal (s4), is electrically connected to the charging capacitor (c6) to discharge the charging charge to the primary coil of the ignition coil (8) discharge switching element (7), in the ignition circuit for a capacity discharge type internal combustion engine having, the forward voltage component (e1), as a voltage value capable of obtaining a continuous ignition operation, to the preset cycle detection voltage value (v1) The period detection signal (s1) generated at the reached ignition timing calculation start time point (t1) is input, and the rotation speed of the internal combustion engine is detected by the time between the adjacent period detection signals (s1), and when necessary, A microcomputer unit (3) that outputs an ignition signal (s4) to the discharge switching element (7), and the output voltage (E)
The reverse voltage component (e2) is partially limited by the current limiting resistor (r1) for charging, and the constant voltage power supply unit (2) for operating the microcomputer unit (3) by the charging power, and an ignition having In an internal combustion engine ignition device with a time control device (1) assembled, at startup, the current limiting resistor (r1) is bypassed, and most of the generated reverse voltage component (e2) is supplied to the constant voltage power supply unit (2). ), The charging voltage of the constant voltage power source section (2) is quickly raised to a constant voltage range in which the microcomputer section (3) can be operated. 2. The method of starting an ignition device for an internal combustion engine according to claim 1, wherein the bypass path of the current limiting resistor (r1) is made conductive by a reverse voltage component (e2) of the output voltage (E). 3. The microcomputer section for the first cycle detection signal (s1)
The ignition method for an internal combustion engine according to claim 1, wherein the bypass path of the current limiting resistor (r1) is cut off by inputting to (3). 4. An ignition coil (8) having a spark plug (P) connected to a secondary side thereof, a power generation coil (6) in a high pressure magnet generator driven by an internal combustion engine, and a primary of the ignition coil (8). Is provided on the side of the output voltage (E) of the generator coil (6) for the forward voltage (e
1) charging capacitor (c6), which is charged by the ignition signal (s4), is electrically connected to the charging capacitor (c6) to discharge the charging charge to the primary coil of the ignition coil (8) discharge switching element (7), in the capacity discharge type internal combustion engine ignition circuit having, the forward voltage component (e1), as a voltage value that can obtain a continuous ignition operation, to the preset cycle detection voltage value (v1) Input the cycle detection signal (s1) generated at the reached ignition timing calculation start time point (t1), and detect the rotation speed of the internal combustion engine by the time between the adjacent cycle detection signals (s1), A microcomputer unit (3) that outputs an ignition signal (s4) to the discharge switching element (7), and the output voltage (E)
The reverse voltage component (e2) is partially limited by the current limiting resistor (r1) for charging, and the constant voltage power supply unit (2) for operating the microcomputer unit (3) by the charging power, and an ignition having In the ignition device for an internal combustion engine in which the time point control device (1) is assembled, the current limiting resistor (r1) is connected in parallel, and the switching element for charging (90) is quickly conducted by the reverse voltage component (e2). ,
The charging switching element (90) is connected between the control terminal and the ground and is turned on by a trigger signal from the microcomputer section (3) to charge the switching element (90).
A start-up device for an internal combustion engine ignition device, comprising a quick-charge part (9) composed of a turn-off transistor (91) for shutting off an internal combustion engine, which is assembled to the constant voltage power supply part (2). 5. A charging switching element (90) in series,
5. The ignition system starting device for an internal combustion engine according to claim 4, wherein a rectifying diode (d7) is connected. 6. A charging switching element (90) in series,
The starting device for an ignition device for an internal combustion engine according to claim 4 or 5, further comprising a protection resistor (r11) having a small resistance value. 7. The starter for an ignition device for an internal combustion engine according to claim 4, 5 or 6, wherein a thyristor is used as the charging switching element (90).