Abstract: A method and a system for transmitting enforceable instructions in a vehicle control (VC) system includes receiving, by a cyclic redundancy check (CRC) calculator, at least one enforceable instruction from vehicle systems. The CRC calculator calculates at least one enforceable instruction CRC based at least partly on the at least one enforceable instruction and transmits the at least one enforceable instruction CRC to a back office server of the VC system and/or an on-board system of a vehicle. Methods for cyclic redundancy check (CRC) hazard mitigation in a vehicle control (VC) system and verifying enforceable instruction data on-board a vehicle are also disclosed.

Abstract: Disclosed is a data recording unit and a data recording system for use in connection with a vehicle, such as a train, a locomotive, a railcar of a train, and the like.

Abstract: A method of replacing a brush holder includes positioning a handle on the brush holder while the brush holder is connected to a support, rotating the handle relative to the brush holder in a first direction that is clockwise or counter-clockwise to connect the handle to the brush holder, removing the brush holder from the support by pulling the handle with the handle attached to the brush holder, rotating the handle relative to the brush holder in a second direction that is opposite to the first direction while pulling a trigger on the handle that moves a core in the handle upward in a cavity in the handle, and removing the handle from the brush holder.

Abstract: Disclosed is a data recording unit and data recording system for use in connection with a vehicle, such as a train, a locomotive of a train, a railcar of a train, and the like.

Abstract: A method and a system for transmitting enforceable instructions in a vehicle control (VC) system includes receiving, by a cyclic redundancy check (CRC) calculator, at least one enforceable instruction from vehicle systems. The CRC calculator calculates at least one enforceable instruction CRC based at least partly on the at least one enforceable instruction and transmits the at least one enforceable instruction CRC to a back office server of the VC system and/or an on-board system of a vehicle. Methods for cyclic redundancy check (CRC) hazard mitigation in a vehicle control (VC) system and verifying enforceable instruction data on-board a vehicle are also disclosed.

Abstract: A system for maintaining brake cylinder pressure includes a brake cylinder passage configured to be in fluid communication with a brake cylinder, a brake pipe passage configured to be in fluid communication with a brake pipe and a brake cylinder, a first valve member moveable between a first position and a second position, and a second valve member in fluid communication with a reference pressure. The second valve member is configured to move the first valve member from the first position to the second position based on a differential between a pressure within the brake cylinder passage and the reference pressure, where the brake pipe passage is configured to only supply air from a brake pipe to a brake cylinder when the first valve member is in the second position.

Abstract: A system for converting an ABDW-type control valve to an ABDX-type control valve for use in a braking mechanism for a railway vehicle includes an ABDW-type control valve body in communication with an air supply system of the braking mechanism for controlling an application and release of brakes in response to changes in air pressure within the braking mechanism. A breather plate is mounted on an accelerated application valve interface on the control valve body. The breather plate has an internal stability volume for compensating a function of an accelerated application valve. A modified slide valve bushing is mounted inside the control valve body for establishing fluid communication with at least one passageway within the control valve body. At least one plug mounted is to at least one air passageway within the control valve body for sealing or choking the at least one air passageway.

Abstract: An assembly has a handle, a brush holder, and a support that connect and disconnect to each other using a locking mechanism. The handle reversibly connects and disconnects from the brush holder. The locking mechanism includes a connecting member on the brush holder that attaches to the handle by interaction of a locking flange on the connecting member with a pair of teeth inside of the handle. Insertion of the support within the brush holder extends a post on the support through the connecting member to interact with the handle and enable disconnection of the handle from the brush holder when the support is fully engaged by the brush holder. The locking mechanism prevents the handle from releasing from the brush holder before the brush holder is completely seated on the support.

Abstract: Disclosed is a data recording unit and data recording system for use in connection with a vehicle, such as a train, a locomotive of a train, a railcar of a train, and the like.

Abstract: Disclosed is a data recorder unit and system for a vehicle. The system includes at least one video camera device configured to generate video data associated with the vehicle and/or its surroundings, and wirelessly transmit at least a portion of the video data. The data recorder unit includes a data recorder enclosure, a data processing unit located in the enclosure and configured to: wirelessly receive at least a portion of the video data from the at least one video camera device, process at least a portion of the video data, and generate processed video data based at least partially on the video data, and at least one storage device comprising at least one crash-hardened memory in communication with the at least one data processing unit and configured to store at least a portion of at least one of the video data and the processed video data.

Abstract: A multi-fluid heat exchanger assembly Is provided that integrates multiple and distinct heat exchanger systems into a single, integrated system or housing utilizing a common header. Any combination of techniques as described may be utilized for optimizing exchanger performance according to the particular fluids being cooled. The heat exchanger assembly can be optimized by utilizing a pair of opposed headers having a first set of openings and a tube core arranged according to a first configuration and a second set of openings and a tube core arranged according to a second configuration and wherein the first and second configurations are different from one another. The heat exchanger assembly can also be optimized through different tube core/fin joining techniques for each of the distinct heat exchanger systems. Another technique for optimizing the heat exchanger assembly is through the use of differing core depths for each of the distinct heat exchanger systems.

Abstract: A system, method, and apparatus for certifying an end-of-train device pressure calibration is provided. The system includes an end-of-train device including a brake pipe interface adapted to be removably connected to a brake pipe system of a train and to receive air having a pressure from the brake pipe system, and a pressure sensing device configured to measure the air pressure received in the brake pipe interface to obtain a measured pressure. The system also includes a pressure calibration device adapted to be removably connected to the brake pipe interface when the end-of-train device is removed from the train, the pressure calibration device configured to output air at a regulated pressure to the brake pipe interface, and at least one controller programmed or configured to determine a calibration certification result based at least partially on a difference between the measured pressure and the regulated pressure.

Abstract: A system and method for detecting broken rails in a track of parallel rails includes at least one first broken rail detection module configured to measure a current through the track and a central control system configured to determine a location of at least one train on the track. The at least one first broken rail detection module is configured to send the central control system a signal based on the measured current. The central control office is configured to determine if a broken rail exists on the track and/or a location of the broken rail on the track based at least partially on the measured current and the location of the at least one train on the track.

Abstract: A method and a system for transmitting enforceable instructions in a positive train control (PTC) system includes receiving, by a cyclic redundancy check (CRC) calculator, at least one enforceable instruction from railroad systems. The CRC calculator calculates at least one enforceable instruction CRC based at least partly on the at least one enforceable instruction and transmits the at least one enforceable instruction CRC to a back office server of the PTC system and/or an on-board system of a locomotive. Methods for cyclic redundancy check (CRC) hazard mitigation in a positive train control (PTC) system and verifying enforceable instruction data on-board a train are also disclosed.

Abstract: Disclosed is a computer-implemented method for determining dynamic braking data for use in a braking model of at least one train, the method including: (a) determining at least one initial safety factor; (b) determining at least one dynamic braking adjustment factor based at least partially on (i) the expected dynamic braking force, and (ii) specified retarding forces of the train; and (c) determining at least one new safety factor based at least partially on the at least one initial safety factor and the at least one dynamic braking adjustment factor. Also disclosed are braking systems including dynamic braking for a train having at least one locomotive.

Abstract: A corrective device for correcting uneven brake shoe wear on a brake mechanism for a railway vehicle, wherein the railway vehicle includes a brake beam having a tension beam coupled to a compression beam, a brake head with brake shoes provided at each end of the brake beams, and a slack adjuster. The corrective device is configured to cooperate with at least one of the compression beam and the slack adjuster to minimize or prevent the compression beam and the tension beam from rotating relative to the wheels and side frames of the railway vehicle. A braking system including the corrective device and a method for correcting uneven brake shoe wear on a brake mechanism for a railway vehicle is also provided.

Abstract: A bail compensating joint may include a threaded push rod, a ratchet in threaded connection with the push rod for rotational motion thereon, and a helical joint including a first bearing and a second bearing mounted on the ratchet for facilitating rotation of the ratchet. The second bearing is supported by an annular composite race member formed by a metal annular inner race member joined with a resiliently deformable annular outer member. In another embodiment of the bail compensating joint, a pair of spherical joints is disposed on opposite sides of the ratchet, the spherical joints supporting the respective first and second bearings.

Abstract: A coupler for a railway car including a coupler anchor, a coupler mechanism pivotable relative to the coupler anchor from an on-center position to an off-center position in a substantially horizontal plane, and a coupler positioning device for pivoting the coupler mechanism relative to the coupler anchor. The coupler positioning device includes a controller adapted for receiving signal information from a bogie relating to an angular position of the bogie relative to a body of the railway car, and at least one pneumatic cylinder for pivoting the coupler mechanism. The controller controls the operation of the at least one pneumatic cylinder in response to the signal information received from the bogie.

Abstract: A train network management system for a train having a locomotive and railcars, including a node computer on the railcar and communicating with a high-speed network device for receiving and transmitting data over a high-speed network, and a locomotive computer on the locomotive and communicating with a high-speed network device for receiving and transmitting data over the high-speed network, where a communication path is generated between at least two high-speed network devices of the railcars and the high-speed network device of the locomotive, such that high-speed data communication is provided between the high-speed network devices of the railcars and the locomotive. A railcar network unit is also disclosed.

Abstract: A system and method for detecting broken rails in a track of parallel rails includes at least one first broken rail detection module configured to measure a current through the track and a central control system configured to determine a location of at least one train on the track. The at least one first broken rail detection module is configured to send the central control system a signal based on the measured current. The central control office is configured to determine if a broken rail exists on the track and/or a location of the broken rail on the track based at least partially on the measured current and the location of the at least one train on the track.