A dual-powered railroad vehicle is provided. The vehicle includes a combustion engine having a first cooling circuit; a traction transformer having a second cooling circuit; and at least one radiator for dissipating thermal energy to surrounding air. The first cooling circuit and the second cooling circuit are configured to dissipate thermal energy via the at least one radiator. Further, a method for operating a dual-powered railroad vehicle is provided.

A dual-powered railroad vehicle is provided. The vehicle includes a combustion engine having a first cooling circuit; a traction transformer having a second cooling circuit; and at least one radiator for dissipating thermal energy to surrounding air. The first cooling circuit and the second cooling circuit are configured to dissipate thermal energy via the at least one radiator. Further, a method for operating a dual-powered railroad vehicle is provided.

An energy efficient locomotive according to the disclosure utilizes a companion generator operably associated with a prime mover engine and electrically independent from a main generator. The companion generator is connected directly to a DC to DC regulator and is configured to supply a DC output to the DC to DC regulator for providing power for non-propulsion electrical devices when the locomotive is coasting or braking and the prime mover engine and main generator are not providing electrical power to the traction motor.

An energy efficient locomotive according to the disclosure utilizes a companion generator operably associated with a prime mover engine and electrically independent from a main generator. The companion generator is connected directly to a DC to DC regulator and is configured to supply a DC output to the DC to DC regulator for providing power for non-propulsion electrical devices when the locomotive is coasting or braking and the prime mover engine and main generator are not providing electrical power to the traction motor.

A power system is disclosed. The power system may have a cryogenic tank configured to hold a supply of liquid fuel, and an engine configured to combust gaseous fuel. The power system may also have a coolant circuit configured to cool the engine, and at least one heat exchanger isolated from the coolant circuit and configured to receive a fluid passing through the engine. The power system may further have a first fuel line extending from the cryogenic tank to the at least one heat exchanger, and a second fuel line extending from the at least one heat exchanger to the engine.

A power system is disclosed. The power system may have a cryogenic tank configured to hold a supply of liquid fuel, and an engine configured to combust gaseous fuel. The power system may also have a coolant circuit configured to cool the engine, and at least one heat exchanger isolated from the coolant circuit and configured to receive a fluid passing through the engine. The power system may further have a first fuel line extending from the cryogenic tank to the at least one heat exchanger, and a second fuel line extending from the at least one heat exchanger to the engine.

A cooling aeraulics device is for cooling an element of a rail vehicle. The aeraulics device is designed to be placed on a roof of the rail vehicle and includes a conduit, which extends substantially longitudinally in relation to the rail vehicle. The conduit includes, successively, a front portion equipped with a front opening for the intake of air, a central portion, in which is housed the element to be cooled, and a rear portion, equipped with a rear opening for the discharge of exhaust air. A surface of a transverse cross-section of the conduit evolves, from the front opening to the rear opening, so as to generate an acceleration of the flow of air in the conduit through the Venturi effect.

A cooling aeraulics device is for cooling an element of a rail vehicle. The aeraulics device is designed to be placed on a roof of the rail vehicle and includes a conduit, which extends substantially longitudinally in relation to the rail vehicle. The conduit includes, successively, a front portion equipped with a front opening for the intake of air, a central portion, in which is housed the element to be cooled, and a rear portion, equipped with a rear opening for the discharge of exhaust air. A surface of a transverse cross-section of the conduit evolves, from the front opening to the rear opening, so as to generate an acceleration of the flow of air in the conduit through the Venturi effect.

The invention relates to an arrangement for supplying a rail vehicle with electrical energy. One electrical machine is allocated to each of at least two internal combustion engines for generating electrical energy. A common controller is designed to start the internal combustion engines individually as required. At least one pre-heating device is designed to pre-heat the internal combustion engines before a start. A temperature detection device is thermally coupled to the internal combustion engines. The controller is designed, during an operation of one of the internal combustion engines, to start another of the internal combustion engines if, due to cooling of the other internal combustion engine, a temperature of the other internal combustion engine detected by a temperature identifying device reaches or exceeds a temperature threshold.

The invention relates to an arrangement for supplying a rail vehicle with electrical energy. One electrical machine is allocated to each of at least two internal combustion engines for generating electrical energy. A common controller is designed to start the internal combustion engines individually as required. At least one pre-heating device is designed to pre-heat the internal combustion engines before a start. A temperature detection device is thermally coupled to the internal combustion engines. The controller is designed, during an operation of one of the internal combustion engines, to start another of the internal combustion engines if, due to cooling of the other internal combustion engine, a temperature of the other internal combustion engine detected by a temperature identifying device reaches or exceeds a temperature threshold.