Patent ID: 7273039
Filing Date: 2007-09-25
Classification: F02D

Abstract:
1. A control apparatus for a vehicular internal combustion engine, comprising; plural injectors which respectively target plural cylinders of an internal combustion engine and are driven by drive currents to inject fuel into the target cylinders; an injector drive circuit to supply the drive currents to the plural injectors; an injector control unit to supply injector drive signals, which control the drive currents, to the injector drive circuit; an injector drive detection unit to generate injector drive confirmation signals corresponding to drivings of the plural injectors; and an injector drive abnormality judgment unit to judge, based on the injector drive confirmation signal, a drive abnormality of the injector corresponding to the injector drive confirmation signal, wherein the injector drive abnormality judgment unit judges an abnormality of the injector drive confirmation signals based on a state of the injector drive confirmation signals, wherein the injector drive detection unit outputs the injector drive confirmation signal in synchronization with the injector drive signal by the injector control unit, and wherein the injector drive detection unit generates the injector drive confirmation signal based on a surge voltage at a time of stop of the drive current supplied to the injector by the injector drive circuit.