JPS6166668U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a conventional ignition timing control device for an internal combustion engine, and FIG. 2 is an output characteristic diagram of an acceleration sensor in the ignition timing control device for an internal combustion engine shown in FIG.
3a to 3h and 4a to 4h are diagrams showing operating waveforms of each part of the ignition timing control device of the internal combustion engine of FIG. 1, respectively, and FIG. 5 is a diagram showing the internal combustion engine of this invention. A block diagram of an embodiment of the ignition timing control device shown in FIG. 6, and FIGS. 6a to 6c, are diagrams showing operating waveforms of the ignition timing control device for the internal combustion engine shown in FIG. 5, respectively. 1... Acceleration sensor, 2... Frequency filter,
3... Analog gate, 4... Gate timing controller, 5... Noise level detector, 6... Comparator, 7... Integrator, 8... Phase shifter, 9... Rotation signal generator, 10 , 13... waveform shaping circuit, 11...
...Switching circuit, 12...Ignition coil, 14
... Level conversion circuit, 16 ... Gate drive circuit.
In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] A rotation signal generator that generates an ignition signal using a magnet generator; an acceleration sensor that detects acceleration of vibration of the internal combustion engine; a first means for detecting knocking of the internal combustion engine from the output of the acceleration sensor; and the rotation signal generator. A first reference signal for determining the timing to start energizing the ignition coil based on the output signal of the ignition coil, and a signal corresponding to the knocking level detected by the first means while the ignition coil is energized are added;
a second means for generating a second reference signal for determining the ignition timing of the ignition coil; a level comparison between the reference signal in the second means and the ignition signal from the rotation signal generator; An ignition timing control device for an internal combustion engine, comprising an ignition timing control circuit that outputs an energization start signal and an ignition timing control signal, and a switching circuit that cuts off power supply to an ignition coil in response to an ignition timing control signal from the ignition timing control circuit.