Patent ID: 9444306
Filing Date: 2016-09-13
CPC Classification: F02N,H02K

Claim Text:
1. A variable flux electric starter motor comprising: a frame; an armature rotatably mounted within the frame; a primary field mounted to the frame, the primary field including a plurality of primary windings electrically one to another; a relay electrically coupled to at least one of the plurality of primary windings; a supplemental field mounted to the frame, the supplemental field including a supplemental winding electrically connected in parallel to the plurality of primary windings, the supplemental field being configured and disposed to provide an excitation to one or more of the plurality of primary windings; and a controller operatively coupled to the relay, the controller selectively closing the relay shorting one of the plurality of primary windings causing the armature to rotate at a first non-zero speed and produce a first torque and opening the relay causing the armature to rotate at a second non-zero speed, lower than the first non-zero speed and produce a second torque, the second torque being greater than the first torque, wherein an electrical flow passes through the supplemental field regardless of the position of the relay and the electrical flow passing through the supplemental winding limits the speed experienced by the armature.