JPS57110729A - Apparatus for controlling jetting and ignition of fuel - Google Patents

Abstract

PURPOSE: To simplify the constitution of a circuit, and to enable fuel to be positively jetted and ignited, by using a delay timing signal as a timing signal to a fuel output circuit, and a reference angle signal as a timing signal to an ignition output circuit.

CONSTITUTION: The reference angle signal SS generated at every rotated angle of a crank shaft is fed to the ignition output circuit 20, the delay timing signal CS is fed to the fuel output circuit 19, and an interruption signal IT1 is fed to a central processing unit 14. Thus, as the timing signal to the ignition output circuit 20 is the reference angle signal SS itself, to change the time to start jetting of fuel, if the time when the delay timing signal is generated, that is the angle delay data of the angle delay circuit, is changed, the output timing of the ignition signal LGS would not change. Consequently, the reloading of the ignition data in the ignition output circuit 20 and the interruption to the central processing unit 14 by the ignition signal GS are not required.

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