INTERNAL COMBUSTION ENGINE CONTROL DEVICE CAPABLE OF ESTIMATING TEMPERATURE OF INTERNAL COMBUSTION ENGINE

摘要

A control device (70), for controlling the operational state of an internal combustion engine (10), is equipped with: a fuel injection command unit (75) that issues commands for the fuel injection timing and the fuel injection amount to a fuel injection valve (29); an ignition command unit (76) that commands a spark plug (34) to ignite at a prescribed time; a rotational frequency detection unit (77) that detects the rotational frequency of the internal combustion engine; and a startup control unit (78) that executes an actual temperature discovery process that discovers the actual temperature of the internal combustion engine at the startup of the engine. The actual temperature discovery process discovers the actual temperature of the internal combustion engine at the startup of the engine by repeating a series of trial operations (wherein the fictive temperature of the internal combustion engine is changed successively and the fuel injection amount corresponding to the relevant fictive temperature is calculated, and the fuel injection command unit is requested to perform a fuel injection with that fuel injection amount, and the ignition command unit is requested to perform ignition at the prescribed timing), with these operations being repeated until it is determined, on the basis of the rotational frequency of the internal combustion engine, that the internal combustion engine has started.