JPS62135869U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram showing the configuration of an embodiment of the present invention, Fig. 2 is a detailed circuit diagram of the ignition signal output circuit of the above embodiment, and Fig. 3 is a generation of various signals during ignition control according to the above embodiment. This is a time chart showing the status. 1A to 1D...Ignition coil, 2A to 2D...Spark plug, 3...Crank angle sensor, 4...Microcomputer, 5A to 5D...AND circuit, 6A to 6D
...Ignition signal output circuit.

Claims (1)

[Claims for Utility Model Registration] Each cylinder is provided with an ignition coil and a spark plug connected to the secondary side of the ignition coil, and outputs a reference signal at a reference crank angle position for each cycle of each cylinder, A crank angle sensor that outputs a position signal for each unit crank angle, and an energization start/cutoff system that independently sets the energization start time and energization cutoff time to the primary side of each ignition coil for each cylinder based on engine operating conditions. timing setting means; reference signal distributing means for distributing and outputting the reference signal from the crank angle sensor for each cylinder; and a reference signal distributing means provided for each cylinder to determine the energization start timing and the energization start timing set by the energization start/cutoff timing setting means. When the energization cutoff timing is temporarily stored and the crank angle position determined by the reference signal of the corresponding cylinder inputted from the reference signal distribution means and the position signal inputted from the crank angle sensor coincides with the set energization start timing. The ignition signal output means starts energization to the temporary side of the corresponding ignition coil, and outputs an ignition signal that causes ignition to occur by cutting off the energization when the set energization cut-off timing coincides with the same. Ignition system for internal combustion engines.