JPS60162274U - 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 configuration of the present invention, FIG. 3 is a circuit diagram showing an embodiment embodying the configuration of FIG. 2, and FIG. FIG. 5 is a circuit diagram showing the main parts of another embodiment of the present invention, and 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 p device and the device of the present invention. .

Claims (5)

[Scope of utility model registration request] (1) An ignition coil, an exciter coil arranged in a magnet generator that rotates in synchronization with the rotation of the internal combustion engine, and an exciter coil arranged in parallel with the exciter coil and triggered by the induced voltage of the exciter coil. The short-circuiting device is provided with a conductive exciter coil short-circuiting switch and a cut-off switch provided to operate to cut off the short-circuiting switch when the voltage across the shorting switch reaches a predetermined value. A current cutoff circuit that induces a high voltage for charging the capacitor in the exciter coil by cutting off a switch for charging the capacitor; an ignition energy storage capacitor that is connected to the ignition energy storage capacitor; An ignition device for an internal combustion engine having an ignition circuit including an ignition timing signal supply circuit for supplying an ignition signal to an ignition thyristor, the ignition device being electrically connected to an auxiliary power generation coil disposed together with the exciter coil in the magnet generator. When the exciter coil and the auxiliary power line generating coil are connected in series or in parallel, the exciter coil and the auxiliary power generating coil are provided between the exciter coil and the auxiliary power generating coil, and the voltage induced in the auxiliary power generating coil is used. A switch circuit that conducts when triggered, and a switch circuit that allows conduction of the switch circuit when the rotational speed of the internal combustion engine is less than a set value and prevents conduction of the switch circuit when the rotational speed exceeds the set value. An ignition device for an internal combustion engine, comprising a switch control circuit that controls the switch circuit. (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) The ignition device for an internal combustion engine according to any one of claims 1 to 3, wherein the auxiliary power generation coil also serves as a power generation coil that drives a load other than the ignition circuit. . (5) At least a part of the auxiliary power generation coil is wound together with the exciter coil around an iron core around which the exciter coil is wound. The ignition device for the internal combustion engine described above.