Patent ID: 8131452
Filing Date: 2012-03-06
Classification: B60W,F02D,F02N,F02P

Abstract:
1. A system that presets a pinion of a starter on a ring gear mounted on an output shaft of an internal combustion engine during the internal combustion engine coasting by engine stop control, and that rotates, after the preset of the pinion on the ring gear, the pinion to thereby crank the internal combustion engine, the system comprising: an angle sensor that outputs a pulse each time the output shaft rotates by a preset angle; a calculator that calculates speed-change information indicative of a change in a speed of rotation of the output shaft based on the pulses outputted from the angle sensor; a determiner that determines, based on the speed-change information, whether at least one of the pulses outputted from the angle sensor represents a proper timing for the preset of the pinion with the ring gear; and a pinion engaging unit that shifts the pinion toward the ring gear so that the pinion is engaged with the ring gear when it is determined that the at least one of the pulses outputted from the angle sensor represents the proper timing for the preset of the pinion with the ring gear.