Electronic control device for internal combustion engine

Abstract

Abstract PURPOSE: To prevent engine stalling or other troubles at the abnormal time of a hot-wire flow meter to measure the suction amount of air by determining at least one of the fuel injection amount and the ignition timing of an engine to correspond only to the number of revolutions of the engine for outputting. CONSTITUTION: The output of a hot-wire flow meter 4 is inputted into a basic pulse computing part 8 via a voltage-flow converter 7, and added to the output of a revolution detector 5 for computing a basic pulse width. This basic pulse width is outputted to an injection pulse correction computing part 10 and an ignition timing computing part 11, where it is respectively corrected by correction signals from various sensors 20 indicating the driving state of an engine, and outputted as a fuel injection amount and an ignition timing signal. At this stage, an abnormal voltage discriminating circuit 6 whose output is inverted at the time of trouble of the hot- wire flow meter 4, and the computing part 8 is intermitted by the inverse output. Meanwhile, an abnormal time injection pulse and an abnormal time ignition timing computing part 11 and 12 are respectively operated for generating fixed control signals. COPYRIGHT: (C)1982,JPO&Japio

Inventors

• 👤 Masashi Fukushima

Bibliographic Details