JPS62223462A - Ignition and charge circuit for vehicle - Google Patents

Abstract

PURPOSE:To make it possible to miniaturize an alternator and to enhance the efficiency of electrical generation thereof, by connecting an ignition circuit to a capacitive discharge ignition spark circuit from an output circuit before a battery through a booster coil. CONSTITUTION:A.C. power which is delivered from a winding 2 is delivered from an output circuit 3 when a generator 1 is driven. Further, positive side half waves P1 which are divided by a regulator 5 are charged in a battery 4 as a battery charging power source. Meanwhile negative side half waves P2 which are divided by the regulator 5 are delivered to a booster circuit 7 through an ignition circuit 6 as an ignition power source, and are then boosted up to a voltage required for ignition. Thereby, it is possible to eliminate an exciter coil from the generator 1, and therefore, the generator 1 may be miniaturized accordingly. Further, since the negative half waves P2 may be used as an exciter power source, it is possible to enhance the efficiency of power source.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an ignition/charging circuit for a vehicle, and in particular, the present invention relates to an ignition/charging circuit for a vehicle, and in particular, to connect the output of a single winding in an alternating current generator mounted on an automobile (two-wheeled vehicle) to a battery and a capacitive discharge circuit. The present invention relates to an ignition/charging circuit for a vehicle in which power supplied to an igniter and cut by a charging rectifier is converted into ignition energy by a boost coil.

[Conventional technology]

Conventionally, the ignition/charging circuit of a vehicle, for example, a motorcycle, as shown in FIGS. 4 and 5, uses separate windings 14, 15, 16, . Collecting current for the battery.

That is, as shown in an example in FIG. 4, one of the armature windings is an exciter coil 14, which is larger than the other coils, and in addition to the exciter coil 14, a lamp coil 15 is used.
, charging coil 16, etc. are formed separately.

In addition, as shown in the example shown in FIG. 5, the ignition/charging circuit configuration diagram shows that the alternator 17 is separated from two different windings 18 and 19 to the capacitive discharge ignition unit 20, battery 21, and accessory 22. The circuit configuration is as follows, and the battery 21
A rectifier 23 is interposed therein.

[Problem that the invention seeks to solve]

In recent years, attempts have been made to miniaturize each component as a means of improving performance, but in the above-mentioned circuit, the battery charging circuit and the exciter ignition circuit are constructed separately from different armature windings. In this case, as illustrated in FIG. 4, the exciter coil 14 is larger than the other coils, and there is a limit to the miniaturization of the generator because the entire armature 13 must be made larger.

In addition, since each set of exciter coils 14 is large, in order to improve insulation, the exciter coil 11 Song wire is fixed with silicone rubber, and the coil exterior tape is an epoxy-impregnated tape between the coils and the exterior. Extra labor and costs were required for the work and components, such as interposing glass cloth tape.

In addition, the power cut by the cuttifier 23 for charging the battery is wasted.

[Means for solving problems]

The present invention was developed for the purpose of providing an ignition/charging circuit for a vehicle that eliminates the drawbacks of the conventional ignition/charging circuit, enables miniaturization of an alternator, and improves power generation efficiency. As a practical means, in the circuit that supplies the output of the alternator to the battery and ignition, the output circuit of one armature winding is connected to the battery, and the ignition circuit is boosted from the output circuit before reaching the battery. This constitutes a vehicle ignition/charging circuit characterized by being connected to a passenger car discharge ignition spark circuit via a coil.

[Effect]

When the alternating current generator is operated, the output current from one winding of the armature is alternating current, so the positive half wave is supplied to the battery for charging via the output circuit. Further, from the output circuit, the negative half-wave is used as ignition power and is led from the ignition circuit to the voltage coil, where it is turned into an exciter voltage of 250V and supplied to the spark circuit.

That is, in the conventional circuit configuration, when charging a battery, the negative half wave is canted by the charging rectifier, but in the circuit of the present invention, this negative half wave is used as the exciter power source. power generation efficiency increases.

Furthermore, since the exciter coil can be omitted in the armature, the generator can be downsized.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a block diagram showing an ignition/charging circuit which is a basic embodiment of the present invention.

The alternating current generator 1 has an output circuit 3 that takes out an AC output of 12 cm from one winding 2 of the armature, and is connected to a battery 4, and a positive half-wave p+ shown in Fig. 2 is shunted to the battery 4. A regulator 5 is provided in front of the battery 4.

Further, an ignition circuit 6 is connected to the output circuit 3 in front of the regulator 5, and the ignition circuit 6 is connected to the boost coil 7.
The boost coil 7 is connected to a spark circuit 8 of a generally known capacitive discharge igniter. Furthermore, a diode 7A is disposed at the starting end of the boost coil 7, which provides a rectifying effect.

A pulser coil 10 provided close to the generator 1 has its output conductor 10A connected to the spark circuit 8, and the output end 9 of the spark circuit 8 is connected to the ignition coil.

In the above configuration, when the generator 1 is operated, the AC power output from one winding 2 is output from the output circuit 3, and the positive half-wave p+, which is shunted by the regulator 5, is used as a battery charging power source. The negative half-wave P2, which is charged to the battery 4 and shunted by the regulator 5, is input as the ignition power source to the booster circuit 7 via the ignition circuit 6, and the voltage required for ignition (for example, 250
V).

The pulsar coil 10 is rotated by a flywheel (not shown) (equivalent to the reference numeral 17A in FIG. 4) during power generation R1, and a contact piece (fourth contact piece) formed on the outer circumferential surface of the flywheel.
In response to the intermittent approach of the engine (equivalent to reference numeral 17B in the figure), a pulse signal is sent to the spark circuit 8 via the output conductor 10A to set the ignition timing commensurate with the rotational speed of the engine.

The regulator 5 supplies a stable voltage (12V) to the battery 4 even when overvoltage occurs due to overspeed of the engine.

With the above configuration, in this circuit, the power cut by the battery charging rectifier is boosted to a voltage suitable for ignition by the boost coil.
The output from one winding of the armature is sufficient, so the exciter coil can be omitted from the generator, and the generator can be made smaller accordingly.

The present invention is not limited to the above-described embodiment (the design may be changed as appropriate. For example, as shown in FIG. There is an effect that can be supplied.

〔effect〕

The present invention having the above configuration has the following excellent effects.

(A) Unlike the DC capacitance discharge ignition unit, a DC-DC converter is not required, so it can be manufactured at low cost.

(E) Since there is no need for an exciter coil dedicated to capacitive discharge ignition, it is possible to improve the charging current efficiency and the lamp negative charge as an alternating current generator ('A CG'').

(C) The 8CG can be made smaller.

[Brief explanation of drawings]

The drawings relate to the present invention, and FIG. 1 is an ignition/charging circuit configuration diagram;
Figure 2 is a usage waveform diagram, Figure 3 is an ignition diagram showing another example.
Charging circuit configuration diagram, FIG. 4 is a front view of the main parts of a conventional generator, and FIG. 5 is a conventional ignition/charging circuit configuration diagram. 1... AC generator 2... Winding 3... Output circuit 4... Battery 5... Regulator 6... Ignition circuit 7... Boost coil
7A...Diode 8...CDI spark circuit 9...Output i 10...Pulser coil 10^...Output lead wire

Claims (1)

[Claims] In the circuit that supplies the output of the alternator to the battery and ignition, the output circuit of one armature winding is connected to the battery, and the ignition circuit is connected to the capacity via a boost coil from the output circuit before the battery. An ignition/charging circuit for a vehicle, characterized in that it is connected to a spark circuit for discharge ignition.