Control device of internal combustion engine

Abstract

Disclosed is an internal-combustion engine controller capable of improving emission characteristics at a start of an internal-combustion engine. When injection during an exhaust stroke is controlled in a port-injection engine, the engine controller ECU performs the first fuel injection during tto taccording to a memory-based crank angle as illustrated in FIG.() at a fuel injection timing before determination of an actual stroke. Thus, the injected fuel has been introduced into a cylinder during the actual stroke. If fuel is not injected during tto twithin the next exhaust stroke as denoted by the solid line, this causes misfire in the cylinder, so that the engine rotation at the start cannot be smooth. Thus, the ECU clears a finished fuel injection flag (F_INJ) at an incorrect crank angle storage determination timing (t) as denoted by the dashed-dotted line, thereby capable of controlling the fuel injection.