Progress Rail Services Corporation

Electro-motive Diesel, Inc.

John Franklin Kral

Sidarta Fornari Beltramin

Douglas Michael Biagini

William Charles Hawkins

A control system for a machine having an engine, a first alternator, a second alternator, and an aftertreatment system is disclosed. The control system may include a sensor associated with the aftertreatment system and configured to determine a temperature of exhaust passing through the aftertreatment system, and a controller in communication with the sensor and connectable to the first and second alternators. The controller may be configured to determine an available power output of the first alternator, determine a load increase of the engine needed to raise the temperature of the exhaust to an operating temperature of the aftertreatment system, and selectively connect the first alternator to a power consumer to achieve the load increase when the available power output of the first alternator is greater than the load increase. The controller may be further configured to selectively connect the second alternator to the power consumer to achieve the load increase when the available power output of the first alternator is less than the load increase.

Locomotive control system having thermal management

A method of manufacturing a power contactor from an existing contactor having a magnetic amplifier that comprises a blowout coil and a ferromagnetic core, and an arc chute for extinguishing an arc generated by opening the existing contactor under a current load is disclosed. The method includes removing a bolt assembly from the existing contactor and at least one side plate from the existing contactor. The method also includes removing the ferromagnetic core from the existing contactor.

Locomotive positive power bus contactor method of assembly

A traction motor drive system may include a plurality of armatures arranged in parallel with each other. The traction motor drive system may also include a plurality of field circuits arranged in series with one another, where each field circuit is associated with a respective one of the armatures. The plurality of field circuits may be arranged in parallel with the plurality of armatures. The traction motor drive system may also include a field isolation system. The field isolation system may include a shunt circuit associated with at least one of the field circuits. The shunt circuit may have a first and second shunt terminal. The field isolation system may also include a first field switch arranged in series with the plurality of field circuits. The first field switch may be configured to switch between the first shunt terminal of the shunt circuit and a first field terminal of at least one of the field circuits. The field system may also include a second field switch, arranged in series with the plurality of field circuits. The second field switch may be configured to switch between the second shunt terminal of the shunt circuit and a second field terminal of at least one of the field circuits.

Traction motor drive system for a locomotive

This disclosure is directed to a traction motor drive system. The traction motor drive system may include a field winding subsystem comprising a field winding associated with a traction motor. The traction motor drive system may also include an armature subsystem arranged in parallel with the field winding subsystem. The armature subsystem may include an armature having first and second armature terminals and a grid resistor selectively electrically coupled in series with the armature. The armature subsystem may also include an armature chopper arranged in parallel with the grid resistor and electrically coupled in series with the armature. The armature chopper may be configured, when the grid resistor is electrically coupled to the armature, to conditionally conduct current to the armature.

Continuously variable dynamic brake for a locomotive

A traction motor drive system includes a plurality of armatures arranged in parallel with each other and a plurality of field circuits arranged in series with one another. The plurality of field circuits is arranged in parallel with the armatures. The traction motor drive system also includes a field isolation system including a shunt circuit associated with at least one field circuit. The field isolation system includes a first field switch arranged in series with the plurality of field circuits and configured to switch between a first terminal of the shunt circuit and a first field terminal of at least one field circuit. The field isolation system includes a second field switch, arranged in series with the plurality of field circuits and configured to switch between a second terminal of the shunt circuit and a second field terminal of at least one field circuit.

An engine warming system for a machine is disclosed. The engine warming system may have a first engine and a second engine each connected to a dedicated first heat exchanger and a second heat exchanger, respectively. The engine warming system may also have a common heat exchanger connected to both the first and second engines to transfer heat between coolant flows from the first and second engines. Further, the engine warming system may have a first pump and a second pump driven by the first engine and second engine, respectively, to circulate coolant from the first and second engines through the common heat exchanger. The engine warming system may also have at least one coolant pump driven by power generated by at least one of the first and second engines, to circulate coolant from a non-operational one of the first and second engines through the common heat exchanger.

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Plainfield, IL, United States of America

John Franklin Kral