STARTER WITH SPEED SENSOR ASSEMBLY

摘要

A starter assembly adapted for use with an engine having a flywheel and electronic control unit. The starter includes a motor, magnetic field source and a pinion gear engageable with the flywheel. An internal power train transmits torque from the armature to the pinion gear and includes a gear set dividing the internal power train into a first segment with the armature and a second segment with the pinion gear. During operation the first segment has a faster rotational speed than the second segment. A speed sensor senses the speed of the first segment and communicates it to the electronic control unit. The starter assembly can be used in a vehicle with an automatic start-stop function and facilitates the synchronizing of the pinion gear and flywheel speeds when restarting the engine. The speed sensor can take various forms and is advantageously supported on the field frame assembly proximate the commutator.

主权项

1. A starter assembly adapted for use with an engine having a flywheel and an electronic control unit, the starter assembly comprising:
a starter motor with an armature and a magnetic field source; a pinion gear selectively engageable with the flywheel; an internal power train including the armature and the pinion gear and extending therebetween wherein the internal power train transmits torque from the armature to the pinion gear; a gear set disposed in the internal power train and dividing the internal power train into first and second segments wherein the first segment includes the armature and the second segment includes the pinion gear and wherein, during rotation of the internal power train by the starter motor, the first segment defines a first rotational speed and the second segment defines a second rotational speed less than the first rotational speed; and a speed sensor assembly configured to sense the rotational speed of the first segment and communicate a signal representative of the rotational speed to the electronic control unit.