Patent ID: 7318420

Claim:
A control apparatus for an internal combustion engine including a plurality of cylinders coupled to a common crankshaft, and having fuel injection means for injecting fuel when current is applied, arranged at each cylinder, said control apparatus comprising: a control circuit configured to generate a control signal indicating a fuel injection period from said fuel injection means, a drive control circuit configured to supply power to said fuel injection means in response to said control signal from said control circuit, a failure detection circuit electrically connected to at least one said fuel injection means, and configured to detect, when power is supplied to the connected fuel injection means by said drive control circuit, disconnection failure at said connected fuel injection means, and a crank angle detector detecting a turning angle of said crankshaft, wherein said failure detection circuit is arranged to be electrically connected common to a plurality of said fuel injection means whose fuel injection period does not overlap in time, and said control circuit includes means for identifying a fuel injection means with said disconnection failure based on a detected result by said failure detection circuit and said turning angle detected by said crank angle detector.