METHOD AND APPARATUS FOR MONITORING IGNITION DEVICE OF INTERNAL COMBUSTION ENGINE

摘要

PURPOSE: To monitor a secondary current circuit of an externally ignited internal combustion engine ignition device with low costs without measuring high voltage, and without necessitating a current load in which ignition energy is reduced in the secondary current circuit. ;CONSTITUTION: When a primary current circuit is closed, a base-to-emitter voltage VBE₁, VBE₂ of ignition output stage transistors T1, T2 are measured and memorized, a comparison value D is formed from at least two continued measuring values VBE₁, VBE₂, the comparison value D is compared with a limit value G to take out an error signal F by comparison.;COPYRIGHT: (C)1995,JPO