JPS58211563A - Non-contact ignition device for internal-combustion engine - Google Patents

Abstract

PURPOSE:To increase the diameter of the coil and facilitate the manufacture of the titled device by intermitting the positive half-wave of a coil of a magnetic generator provided with the generating coil for charging a battery, for ignition and lamp to generate a high voltage. CONSTITUTION:A negative half wave of a first generating coil 1 for charging a battery and concurrently used for ignition is caused to have the same phase with a second generating coil to operate a lamp 23. When the positive half wave of the coil 1 begins to generate, a base current flows to a transistor TR8 through a resistor 7, and the CEs of the transistor TR8 become conductive and the output of the transistor TR8 is short-circuited. However, a short-circuit current increases, VCE of the transistor TR8 becomes large, and a potential at a point (a) of a voltage dividing circuit consisting of resistors 4 and 5 increases, a thyristor 6 being turned ON and the transistor TR8 being turned OFF. Thus, the short-circuit is instantaneously cut off and a high voltage is generated at the coil 1. A capacitor 13 is charged by this high voltage, and thyristor 18 is turned ON, to charge a battery 20. By a signal from a timing sensor 2, the thyristor 18 is turned ON and the capacitor 13 discharges and sparks 17 by the high voltage of the coil 16.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a capacitor discharge type non-contact ignition device for an internal combustion engine.

Conventionally, in order to keep the charging voltage of the capacitor almost uniform from low to high engine speeds, this type of capacitor charging voltage was charged using a thin wire with a large number of turns (2), mainly at low speeds. It consists of a low-speed coil that charges the capacitor, and a high-speed coil that has a thick wire diameter and a small number of turns and mainly charges the capacitor during high-speed rotation.The capacitor is directly charged by the output of these coils. It had become.

However, in the conventional device described above, one of the +11 capacitor charging coils and the 2-J coil with different specifications for low speed and ^ speed is required, resulting in a complicated structure. Also, J method is popular and the size of the magnet generator becomes larger.

(2) The charging coil for low speed is a thin wire (wire diameter 0.13~t1.
Since many rolls (3,000 to 7,000 turns) are required (3,000 to 7,000 turns), work efficiency is quick and quality problems are less likely to occur.

(3) If you try to lower the secondary pressure at low speeds, that is, the capacitor 11, the secondary pressure at medium speeds, that is, the J capacitor pressure will decrease, and the ignition coil or semiconductor element will become weaker. Heat resistance is insufficient. There are problems such as.

In order to solve the above-mentioned problem, the present invention qualitatively shorts the half-wave output of the generator coil by means of a short-circuiting semiconductor switching element connected in parallel with the capacitor. (This semiconductor switching element f
Due to the voltage induced in the generating coil at the time of interruption, 'C2l
7. - When charging the sensor (4), each time the LL4 voltage exceeds the set value, the battery is charged by the current pressure, and the half-wave output of the other force of the generator coil is generated. By supplying the lamp load with a tight wire and further supplying output to this 7-ring load from the 21 coil of the power generator for the crawler/pull, the wire diameter can be reduced to 1°ζ and the number of turns can be increased.
By using +/il, it is possible to charge the -1 sensor well, and also to charge the battery without suppressing the heat generation of each element.Furthermore, it is possible to generate power for the lamp load to solve the shortage of point carpenter power at low speeds. ] The purpose is to enable the lamp load output 'l knob to be turned on by the lamp load.

The present invention will now be described with reference to embodiments shown in the drawings.

In Fig. 1, ■ is a generator coil for battery charging and ignition illumination of a magnet generator, for example, a wire diameter of 0.3 to 1.0-1 and a number of turns of 200 to 600 times is used. In a magnet generator of this size, the wire diameter is about four times thicker than that of a conventional capacitor charging coil, and the number of turns is about 1/1O. 2 is the reference position 1illζ
The timing sensor for generating the soldering iron output signal: (is an auxiliary f-ode for taking out the reverse semicircular output shown by the broken line arrow of the generator coil l and supplying it to the lamp load 23.
is between the terminals of the generating coil l! The dividing point 1 is connected to the gate of the thyristor 6, and the dividing point 1 is connected between the base and emitter of the transistor 8. 7 is a resistor of the transistor 8, and this resistor 7, thyristor b and resistors 4 and 5 constitute a cut-off control circuit.
/meta 8 constitutes a short-circuiting conductor switching element for short-circuiting the forward output of the coil 1. 9.10 is thyristor I
6 rows of voltage dividing resistors are connected between the terminals of f through diodes 1'9a, and the voltage dividing point is connected to the gate of thyristor 11. When the generated voltage of l exceeds the set value, thyristor 11
It is designed to conduct. Then, the positive half-wave output shown by the solid arrow of the generator coil l is supplied to the battery 20 via the thyristor 11 (5). The diode 9a constitutes a high-voltage IF responsive half-wave extraction circuit. 12 is a discharge blocking diode;
13 is an ignition capacitor, and 14 is a guide for supplying the half-wave output signal of the timing sensor 2 to the gate of the thyristor 18 as an ignition signal. 15 is 1kIIL
In the arc diode, 16 is the ignition coil, 16a is its primary coil, and l fi b is its secondary coil.

17 is an ignition plug, 18 is an ignition semiconductor switch (an ignition thyristor serving as a conductor element, and conducts when the ignition signal from the timing sensor 2 is applied to the gate):
The primary coil 1tia of the ignition coil 16 is supplied with the charged charge of the primary capacitor 13. Reference numeral 19 denotes a lamp load generating coil of the magnetic I generator, which is used for illumination of the lamp load 23, and both generating coils L.

19 is designed to generate in-phase outputs.

Next, as the magnetic coil 1 generator used in this example, N
, S/C W has 12 poles magnetized at equal intervals, and a ring-shaped stator core with protrusions of 121i11 formed at equal intervals on the outer periphery (6). The power generating coil 19 is also wound around the other projecting part of the stator core, and the power generating coil 1.19 is connected to the rotor 1 of the magnetic filter generator by the rotation of the rotation f. Six cycles of 1M AC power are generated per rotation.

Now, a half-wave output in the direction of the solid line arrow / in Figure 1 (+1 direction) is generated in the generator coil l, and when it starts, 2r ()L l
・Base electrolyte flows to the transistor 8 in the resistor 7 → base of the transistor 8, and the circuit between the cap and the cap causes conduction between the cap, the lid, and the cap of the transistor 8, causing a positive half-wave of the coil 1. The output is shorted.

At this time, the short-circuit current of transistor 8 increases, and the voltage drop t' between the :JL vector and emitter of transistor 8 increases, and the connection point a of the IE circuit consisting of resistors 4 and 5
Electricity 11. increases. This turtle juice corresponds to the set value (for example, the ship's current of 0.5 to 4 A).

value), thyristor 6 becomes conductive.1.1 Thyristor 8
Since there is a short circuit between the base and emitter of Tofu (7), the current between the collector and emitter of Nostar 8 is 0FFL, and the ship's current is abruptly cut off. At this time, a large pulse-like induced electric current JE is generated in the coil 1, and the capacitor 13 is sufficiently charged by this current 11-. Also, the induced voltage is set to a set value (for example, 100 to
300V) kJ7, the voltage at the connection point of the low circuit consisting of resistors 9 and 10 increases, and thyristor 11 or 4
It goes through. As a result, the subsequent half-wave output of the coil 1 is supplied to the battery 20 via the thyristor II, and the battery 20 is charged. By charging the battery 20 in this manner, the positive half-wave output of the coil I is suppressed, and overvoltage to each element is prevented. On the other hand, the reverse half-wave output of the -I illumination 1 (broken line arrow Ell in the figure) is supplied to the lamp negative 23 via the G' (auto) 3. In this way, it is supplied to the lamp negative 23. By this, −1 il l
By suppressing the reverse half-wave output of the thyristor 6, 11 and the transistor 8 so that no reverse overvoltage is applied, and by passing a current in the reverse (8) direction through the coil l, the voltage can be reduced. The reaction suppresses the magnitude of the subsequent positive direction output, reducing the current in coil i and the current in thyristor b. This prevents coil 10AM and thyristor b,
Resistance 4, 5. -1 miniaturization is possible.

In addition, when a reverse 1t11 half-wave output (dotted line arrow in Figure 1) is generated in the coil l, the timing sensor 2
116 points of C are supplied through the diode 1'14 (by No. 4, the thyristor 18 is connected 4 times 2, :l;'-f'
The charge 1111M of the capacitor 13 and the thyristor 1) is rapidly discharged in the circuit of the primary coils 1 and d of the ignition coil lti, and ignited.
In the second order of υ, ＾＾1)+ is obtained in the '1 ile 16b, and a large spark is generated in the zλ fire company 17.

In addition, the positive and negative outputs of the generator coil 19 are both output from the lamp 1.
It is supplied to ar423 and turns on ζ this fungrozu i.

Here, since the half-wave output in the direction of the solid arrow in FIG. It merges with the tEA half-cough output (in the direction of the dashed arrow in Figure 1),
In particular, the ignition energy is increased at low speeds when the thyristor 11 is not conductive. Also, thyristor 1
When 1 becomes conductive, the 1 direction half-wave output (in the direction of the solid line arrow) of Ile 19 also flows through the path of diode 3, thyristor 11, Buffkeli 20, -I, and I. Problems such as low voltage drop F (Banoari electric power (forward voltage of two diodes; 1 drop F) are generally equal to or higher than the lamp negative voltage 11 ratio, and the voltage drop F) is low. 4 It never happens.

JJ, the end 5' of the capacitor 1:3 shown in Figure 2.
Between the thyristor 18 and the primary coil lb of the ignition quill 16
A series circuit may also be connected.

Alternatively, the AC regulator 4L may be connected in parallel with the holder 1t23.

As mentioned above, in the present invention, the
When the short M411 current due to the positive wave output is sufficiently flowing on the capacitor charging side of the power generating coil (10), the short circuit semiconductor switch 1' noting the short circuit which substantially shorts the half wave output of the power is flowing (10). The capacitor is charged by the voltage induced in the generator coil when the short-circuit semiconductor switching IA switch is cut off, and the capacitor is charged by the voltage induced in the generator coil when the short-circuit semiconductor switching IA terminal is disconnected. Since the lamp load is supplied by the J-de to the lamp load whose output is supplied by the lamp load generator coil, there is an excellent effect as described in the lid.

11+ Conventionally, the capacitor charging coil is 1゛, (, - line <
, two power generating coils with different specifications: a coil with a large number of turns due to i and a coil with a large number of turns due to a thick wire, and a coil with a small number of turns due to a thick wire It is possible to simplify the structure and reduce the size.

(21: The degree of freedom in setting the pressure and secondary voltage of the J-denser is large, sufficient ignition performance can be obtained from low speeds, and startability can be improved.

(3) Since there is no need to use wire as a capacitor charging coil, quality problems can be solved.

(4) V(1
1) The armature reaction associated with supplying wave output to the lamp load suppresses the half-wave output of one side of the generator coil, reducing the current flowing through each element, and generating negative lamp power while suppressing the heat generation of each element. It is possible to effectively supply power to i.

(5) In the low-speed rotation range where the ignition energy key is insufficient, the 6-point starting energy key can be supplied from the 7-ring load generator coil via the auxiliary diode to compensate for the shortage.

+61 Furthermore, in the present invention, the shorting semiconductor strip 1'
Electricity 1F induced in the generating coil when No./Ririn f is cut off
is detected, and when this voltage exceeds the set value, the half-wave output of one side of this generating coil is continued to be supplied to the battery, so the induced voltage of the generating coil is suppressed to the set value, and after that, ζ Supply unnecessary electricity (generated) to Hano 1 and charge the battery? Not only can it be done as follows, but also the heat generation of each element can be further suppressed, and the heat generation of the power generation coil can also be suppressed.

[Brief explanation of drawings]

(!2) Figure 1 is an electrical circuit diagram showing one embodiment of the device of the present invention, Figure 2
The figure is an electrical circuit diagram showing another embodiment of the device of the present invention. l... Battery ignition power generation coil, ((...
Auxiliary diode, 4, 5, 6.7...'am''#4 Voltage dividing resistor that constitutes the control circuit, thyristor, base resistor,
8... i-road semiconductor switch cliff f 2.
～Star, 9, 10.9a, I 1-A IF response I output circuit, tie auto, 9 (risk, 1
2...Discharge prevention U-use/Ioto, 13 ・1. . Capacitor, 2.14... Timing sensor and diode that constitute the ignition signal generation circuit, 1b... Retraction - l il, l 6 a ・1st order = 1 il, l 6 b ・2nd order: 1il 17...Spark plug, 18...Semiconductor for ignition (silisk for ignition forming an element), 20...
Banoari 23...Lamp load. Attorney Takashi Okabe (13)

Claims (1)

[Scope of Claims] Power generation for battery charging and ignition power supply: 1. A sufficient short-circuit current flows through the short-circuit semiconductor switching element that substantially short-circuits the -h half-wave output of the second battery charging and igniting battery charger, and the short-circuit semiconductor switching element. Q) Short-circuiting element A disconnection control circuit for disconnecting the switching element, and when this short-circuiting semiconductor switching element r- is disconnected, the battery, charging and ignition power generation: 1 (induced by ru^den)shiyo-
J'C is charged: l7r, the primary coil and the secondary coil are separated by 4" from the ignition coil, the battery, and the short-circuiting semiconductor switch notching element is cut off.
Induced by the generator coil for charging and ignition power supply
f is detected, and when this voltage exceeds the set value, this power generation is performed. One half-wave output of f is supplied to the battery. Note: A discharge blocking diode connected in series in the charging circuit of the capacitor,
an ignition signal generation circuit that generates an ignition signal at the ignition timing;
The ignition signal from this ignition signal generation circuit causes the monument to pass 'C.
l1il note: 1 ndensa charging 111 buds f4il4i
Book l! Ignition conductor switch/resonator for supplying to the primary coil of the ignition coil, ii. The ignition plug connected to the secondary coil of the ignition coil, and if J. Between the lamp load supplied and the half-wave output of the Ail battery charging and ignition coil from which the coil is not used for battery charging and ignition illumination is supplied to the lamp load. A non-contact ignition device for an internal combustion engine, comprising an auxiliary diode inserted in the ignition device.