JPS60128979U - Ignition system for internal combustion engines - Google Patents

Abstract

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

Description

[Brief explanation of the drawing]

Fig. 1 is a block circuit diagram showing the structure of a conventional ignition device for an internal combustion engine, Fig. 2 is a circuit diagram showing the structure of an embodiment of the ignition device for an internal combustion engine according to the present invention, and Figs. 4 and 5 are flowcharts showing the contents of the processing executed by the CPU in FIG. 3, and FIG. 6 is a block diagram showing the structure of the ignition timing control circuit in FIG. Configuration diagram of data-rich table A for optimal lead angle values, No. 7
Figure and Figure 8 are stored in the ROM of Figure 3.
, optimal ON duty Du data table B and c775. 〒￥tkey＞ay-z い22, □, ＊＊＊＊
a*-Yo coil, L2...Secondary coil, 13a
~13d... Spark plug, 14... Ignition timing control circuit, 22... CPU.

Claims (1)

[Claims for Utility Model Registration] An ignition device for an internal combustion engine that applies high voltage generated on the secondary side to the ignition plug and discharges it by interrupting the current flowing to the primary side of the ignition coil in accordance with the ignition timing. In accordance with the rotational speed and load condition of the internal combustion engine, the timing of supplying current from the power source to the ignition coil is advanced during low speed and low load conditions, thereby increasing the breaking current value on the primary side of the ignition coil. 1. An ignition device for an internal combustion engine, comprising primary current control means for increasing the primary current.