Abstract:
A magnetic traction assembly is disclosed for a railcar mover that provides additional downforce to improve traction for a railcar mover when required. The magnetic traction assembly may comprise a frame, an actuator, and a magnetic element positioned underneath a railcar mover. The magnetic element may be lowered to a deployed position, where the magnetic element is positioned near the railroad rails such that the magnetic field from the magnetic element interacts with the railroad rail creating an attraction force that provides additional downforce to the railcar mover.
Abstract:
Verfahren zum Kompensieren eines Zugkraftverlusts eines Schienenfahrzeugs Die Erfindung betrifft ein Verfahren zum Kompensieren eines Zugkraftverlusts eines Schienenfahrzeugs (2), bevorzugt einer Güterzuglokomotive (2), in einem Schienenbogen (1), insbeson- dere bei einem Anfahren des Schienenfahrzeugs (2) und/oder insbesondere an einer Steigung, wobei vergleichsweise ungüns- tige Reibungsbedingungen zwischen einer Schiene (10) und we- nigstens einem angetriebenen Schienenrad (210, 210) des Schienenfahrzeugs (2) durch ein aktives Lenken des Schienen- rads (210, 210) auf der Schiene (10) in vergleichsweise güns- tige Reibungsbedingungen geändert werden.
Abstract:
This invention is related to the control of railway traction vehicles. A transmitter (1) is placed between the pedestal liner and the journal box of a wheelset. The transmitter (1) registers every change of pressure between the traction (F) and the bracking (B) force. A signal is generated and transformed into a command to control the power setting of the traction vehicle.
Abstract:
A wheel impact reduction system for a rail vehicle (100) includes a sensor (502, 602), a control module (504, 604), and a force reduction assembly (506, 606). The sensor (502, 602) detects a discontinuity (508, 510, 608, 610) in a rail that is located upstream of a wheel (112) of the rail vehicle (100) in a direction of travel (208). The control module (504, 604) is communicatively coupled with the sensor (502, 602). The control module (504, 604) determines whether to apply a correction force (424) to the wheel (112) based on the discontinuity (508, 510, 608, 610) detected by the sensor (502, 602). The force reduction assembly (506, 606) is joined to the wheel (112) of the rail vehicle (100) and is communicatively coupled with the control module (504, 604). The force reduction assembly (506, 606) reduces a wheel impact force (400) imparted on the rail by the wheel by applying the correction force (424) to the wheel (112).
Abstract:
A traction control system (156) for use in an electric traction motor propulsion system (22). The system includes at least two traction motors (38, 40) each having an axle- wheel set (50, 52) associated therewith, a speed sensor (62) for sensing a speed parameter representative of speed of the wheel mounted on the axle-wheel set (50, 52), a torque sensor for sensing a torque parameter representative of torque feedback exerted by the axle-wheel set, an estimator (96) coupled to the speed sensor (62) and the torque sensor and configured to estimate a tractive effort value or a creep value or a torsional vibration based upon the speed, the torque feedback, or a combination thereof. The system also includes a controller (36) for controlling the traction motors based upon the tractive effort value or the creep value.
Abstract:
A surface conditioning (1) device for railway track rails (2) and/or railway vehicle wheels (7), the device comprising: a DC power supply (3); a supply of gas (9); a plasma delivery head (13) connected to receive DC power from said power supply (3) and gas from said gas supply (9); and an igniter (6) for igniting said gas in said plasma delivery head (13): wherein, in use, plasma is generated within said delivery head (13) by ignition of said gas in said delivery head (13), and plasma with gas is blown from the delivery head onto a railway track rail (2) and/or railway vehicle wheel (7), thereby to condition said rail (2) and/or wheel (7).
Abstract:
Conventional APUs for diesel-electric locomotives may include an AC electric generator and typically require additional hardware to be installed to convert the AC power output by the generator to DC power that can power electrical systems or charge batteries in the locomotive. According to some embodiments, there is provided an auxiliary power unit (APU) or system for operation in cooperation with a primary engine. The APU includes a secondary engine; a primary engine coolant heating system, or a primary engine lubricant heating system; a control system that automatically shuts down the primary engine and starts the secondary engine responsive to a predetermined condition; and a Direct Current (DC) power generator that generates an output voltage, the DC power generator being driven by the secondary engine.