초록 ▼

A dual purpose alternator starter for an automotive vehicle designed to be positioned between the engine and transmission. In place of the ring gear in a conventional drive train assembly, a pair of off set magnetically permeable discs are bolted to the power shaft. These discs form an annular chann

A dual purpose alternator starter for an automotive vehicle designed to be positioned between the engine and transmission. In place of the ring gear in a conventional drive train assembly, a pair of off set magnetically permeable discs are bolted to the power shaft. These discs form an annular channel between them. A plurality of rare earth permanent magnets are mounted on the inside face of one of the discs in the channel. On the opposite side of this disc, a set of ring shaped switch contact members are mounted. Positioned stationary to the engine and within the channel is a stationary ironless stator assembly having flat copper windings embedded in an insulation matrix. These windings alternately pass from the perimeter of the disc towards the interior of the disc as each winding forms a single pass around the ring shaped disc. A stationary brush assembly mounted to ride against the set of switch rings on the rotating discs conducts electrical current, when operated as a starter motor, through the ironless stator windings to produce a torque in one direction on the power shaft thus starting the internal combustion engine. When operated as an alternator, the magnetic flux from the permanent magnets cutting the windings of the stationary stator produces electrical current within the stator.

대표청구항 ▼

An electrical machine adapted for use as an integral dual purpose motor and generator having a rotatable power shaft, said machine comprising: a nonmagnetic stator winding means for conducting electrical current therethrough; a plurality of high flux permanent magnets creating a plurality of magneti

An electrical machine adapted for use as an integral dual purpose motor and generator having a rotatable power shaft, said machine comprising: a nonmagnetic stator winding means for conducting electrical current therethrough; a plurality of high flux permanent magnets creating a plurality of magnetic fields of flux having alternating polarity passing through said stator winding means, said winding means and said magnets being movable relative to each other about said shaft; a flux return path of magnetically permeable material for said fields passing through said stator winding means, said path being fixed relative to said magnets; and a means for directing electrical current in said winding means producing mechanical torque in one direction on said shaft when said machine is operated as a motor, whereby mechanical torque is applied to said shaft by the relative motion of the current passing through the magnetic fields of the permanent magnets, and electrical current is produced in said stator means when said magnetic field from said permanent magnets passes through said winding means as said shaft is rotated.