Remy Technologies, LLC

Delco Remy America, Inc.

William Cai

David A Fulton

Dong Ju Park

Kook-Ju Lee

An engine starter system is disclosed. The starter system includes an electric cranking motor having a shaft and configured to crank the engine. The starter system further includes a planetary-type reduction gear unit that has a starter motor ring gear. The starter system has a pinion mechanism mounted on the shaft and configured to selectively engage a ring gear of the engine. A clutch assembly is configured to transmit torque between the shaft and the pinion mechanism. The clutch assembly includes a current conducting material and the starter motor ring gear includes one or more permanent magnets. The starter system employs the principle of Lenz's law to reduce the overrunning rotational speed of the cranking motor upon disengagement of the pinion mechanism from the engine's ring gear after the engine has started.

Magnetic brake system for starter motor

An electric machine comprises a stator core defining a plurality of slots. Multi-phase fractional slot windings are positioned in the slots of the stator core. The multi-phase winding include a first winding set comprised of a first plurality of conductors having a substantially rectangular cross-sectional shape and a second winding set comprised of a second plurality of conductors having a substantially rectangular cross-sectional shape. The multi-phase fractional slot windings include a non-integer slots per pole per phase value.

Multi-phase fractional slot windings for electric machines having segmented bar-shaped windings

Systems and methods of the invention may utilize integrated starter-alternator (ISA) electronics to drive a conventional DC starter coupled to a start-stop ISA system providing a voltage higher than that at which the starter is rated. The DC starter may cold crank an internal combustion engine, while a poly-phase starter alternator warn cranks the engine and converts mechanical energy to an AC current. The AC current may be converted to a DC current to provide charging functions. A reduced average voltage is provided to the DC starter and an adjustable-frequency alternating current may be provided to the starter alternator.

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Carmel, IN, United States of America

William Cai