JPS60164681U - Ignition system for internal combustion engines - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram showing a conventional example, Fig. 2 is a block diagram showing the basic structure of the present invention, Fig. 3 is a circuit diagram showing an embodiment embodying the structure of Fig. 2, and Fig. 4 1 is a circuit diagram showing the main parts of another embodiment of the present invention. FIG. 5 is a diagram showing an example of the characteristics of the current cutoff value and the capacitor charging voltage with respect to the rotation speed for the conventional device and the device of the present invention.

Claims (1)

[Claims for Utility Model Registration] (1) An ignition coil, an exciter coil disposed in a magnet generator that rotates in synchronization with the rotation of the internal combustion engine, and an exciter coil disposed in parallel with the exciter coil. An exciter coil short-circuiting switch that conducts when triggered by the induced voltage of the exciter coil, and a cut-off switch that operates to turn off the shorting switch when the voltage across the shorting switch reaches a predetermined value. a current interrupting circuit which is provided on the primary side of the ignition coil and which induces a high voltage for capacitor charging in the exciter coil by interrupting the short-circuiting switch; an ignition energy storage capacitor that is charged to one polarity; a discharge control thyristor that is provided to discharge the charge of the ignition energy storage capacitor to the primary coil of the ignition coil when conductive; In an ignition device for an internal combustion engine having an ignition circuit including an ignition timing signal supply circuit that supplies an ignition signal to the thyristor at the ignition timing of the internal combustion engine, an auxiliary power generation coil is included in the magnet generator together with the exciter coil. The auxiliary power generation coil is connected in series or parallel to the exciter filter via a diode, and when a short circuit current flows from the exciter coil through the i-way switch, the direction is the same as the short circuit current. An ignition device for an internal combustion engine, characterized in that the direction of the diode is set so that a current of 100 Ω flows from the auxiliary power generating coil to the short-circuiting switch. (2) The ignition device for an internal combustion engine according to claim 1, wherein the auxiliary power generating coil is a single-phase generating coil disposed within the magnet generator. (3) The ignition device for an internal combustion engine according to claim 1, wherein the auxiliary power generating coil is a generating coil of at least one phase of a multi-phase generating coil arranged in the magnet generator. . (4) A utility model in which the auxiliary power generation coil also serves as a power generation coil that drives a load other than the ignition circuit - For internal combustion engines according to any one of registered claims 1 to 3. Ignition device. (5) At least a portion of the auxiliary power generation coil is wound together with the exciter coil around an iron core around which the exciter coil is wound. Ignition system for internal combustion engines.