Abstract: A crank angle detecting apparatus of an engine is equipped with a camshaft sensor for outputting the same number of pulse signals CAM as the cylinder number at every stroke phase difference between the cylinders, and further equipped with a crankshaft sensor for outputting a position signal POS 10 at every unit crank angle. A signal of the output position signals POS 10 is omitted at the position where the leading pulse of the pulse signals CAM is generated. On the other hand, a counter CNTFST is equipped for counting up the generation of the position signals POS 10 which will be cleared every time the pulse signal CAM is generated. When the value of the counter CNTFST is equal to or above a threshold value at the time the pulse signal CAM is generated, then the pulse signal CAM is determined as a leading pulse, and the first position signal POS 10 output after the determination is set as the reference position.

Abstract: A fuel feeder comprises a filter case installed in a fuel tank through a fuel-tank access hole by means of a mounting bracket. An in-tank fuel pump and a filter element are both disposed in the filter case, while a fuel-pressure regulator having a fuel return port is mounted on the upper side of the filter case. Also provided is a fuel return pipe connected at its upstream end to the fuel return port of the pressure regulator, and having a conduit portion extending downwards from the upstream end along the outer periphery of the filter case. The fuel return pipe has a return-fuel outlet formed at a side of the conduit portion facing the outer periphery of the filter case, whereby superfluous fuel returned from the pressure regulator flows into the tank at a position spaced apart from the bottom of the tank with impingement of the superfluous fuel flow against the outer periphery of the filter case to reduce noises and to effectively release static electricity from the electrified filter case.