Patent ID: 7082362

Claim:
A cylinder identification devise for an internal combustion engine, comprising: an intake cam sensor detecting a rotational angle of an intake camshaft and outputting a detected signal of which a signal level is varied according to the rotational angle of the intake camshaft; an exhaust cam sensor detecting a rotational angle of an exhaust camshaft and outputting a detected signal of which a signal level is varied according to the rotational angle of the exhaust cam shaft; and a means for identifying a cylinder into which a fuel is injected according to an order of combination variation of the signal levels of the signals detected by the intake cam sensor and the exhaust cam sensor, wherein changing positions of the signal levels of at least on of the intake cam sensor and the exhaust cam sensor are arranged in such a manner to correspond to positions or right before positions in which the fuel can be initially injected at the time of the engine starting.