Abstract: A number of embodiments of double overhead cam shaft V type engines wherein the drive arrangement for the camshafts permits not only a compact design but also one in which the timing loadings are decreased to improve engine life, performance and reduced servicing.

Abstract: An engine control device is provided to reliably detect an abnormality in crank pulses. The device determines that there is an abnormality in crank pulses when the situation, in which a standard pitch crank pulse counter T does not reach a prescribed value T0 between irregular pitch crank pulses (interval abnormality), repeatedly occurs at least a prescribed value CNT0 times, when an irregular pitch is not detected for a prescribed period of time for the crank pulse counter T to count up to TMAX or longer, or when the situation, in which a prescribed number or more of clank pulses are not detected for a prescribed period of time, repeatedly occurs at least a count-up value KMAX of times.