Abstract:
In a railroad locomotive for operation in low ambient temperature conditions with the locomotive having an engine which includes a cooling system using a coolant liquid, a coolant liquid containment system is provided and includes a containment tank, an inlet port in fluid flow communication with an outlet from the engine cooling system and with the interior of the containment tank, an inlet valve for controlling the flow of coolant liquid through the inlet port, an outlet inlet port in fluid flow communication with the interior of the tank for discharge of the coolant liquid from the containment tank, an outlet valve for controlling the flow of coolant liquid from the containment tank, a sensor for monitoring a parameter indicative of the temperature of coolant liquid in the engine cooling system and generating a signal indicative of the temperature of the coolant liquid and a control device for receiving information indicative of the temperature of the coolant liquid and in communication with the inlet valve for controlling the operation of the inlet valve and the flow of the cooling liquid into the tank, when the temperature of the coolant liquid falls below a predetermined level.
Abstract:
A railroad vehicle (1500) for carrying freight is described. The railroad vehicle (1500) comprises power regeneration capability through a traction motor (1530) linked to a driving wheel (1520D), an electrical energy storage system (1550), a controller (1570) that may selectively operate the traction motor (1530) in a motoring mode, a coasting mode, or a dynamic braking mode. In the dynamic braking mode electrical energy from the traction motor (1530) is transmitted to the electrical energy storage system (1550). The controller (1570) is in communication with a communication link (1580) that receives control commands from an external control source (1595), and those control commands indicate the operating mode for a particular period of time.
Abstract:
In a railroad locomotive having a diesel engine, an electromotive propulsion system for generating and transmitting electrical power from the engine to wheels of the locomotive for propelling the locomotive, at least one computer, and a computer software code for a computer to control more rapid generation and transmission of power at a predetermined level of power to the wheels to propel the vehicle, the computer software module comprising a software module for a computer for increasing engine speed to approximately a maximum engine speed prior to transmitting power generated by the engine to propel the locomotive, and a software module for a computer for thereafter controlling the electromotive propulsion system to transfer power from the engine to the locomotive wheels to propel and accelerate the locomotive.
Abstract:
A method and system (10) for self-directed operation of a locomotive (12) in a rail yard (82) using a control system (64) on the locomotive for controlling locomotive operations. The method includes establishing at least one operational area (e.g. 74, 76, 78) within the rail yard and associating an operational parameter with each area. The method also includes operating the locomotive using the control system and sensing a location of the locomotive within an operational area. The method further includes determining whether the locomotive is operating within the operational parameter established for the area of its location. If the locomotive is determined not to be operating within the operational parameter, an operation of the locomotive is automatically controlled to operate within the respective operational parameter, without operator input to the control system. The system includes a location detector (62) in communication with the control system to automatically control locomotive operation.
Abstract:
A system and method for retrofitting a propulsion circuit of an existing Off Highway Vehicle to enable the propulsion circuit to operate as a hybrid energy Off Highway Vehicle propulsion circuit. The hybrid propulsion circuit includes a primary power source, and a traction motor for preopelling an Off Highway Vehicle in response to the primary electric power. The traction motor has a motoring mode of operation and a power dissipation mode of operation. The traction motor generates dynamic braking electrical power in the power dissipation mode of operation. An electrical energy storage system includes a chopper circuit coupled to an energy storage device. The storage device is responsive to the chopper circuit to selectively store electrical energy generated in the power dissipation mode. The storage system selectively provides secondary electric power from the storage device to traction motor to assist in propelling the Off Highway Vehicle during the motoring mode.