Various methods and systems are provided for a variable geometry turbine. In one example, a system for an engine comprises a turbocharger turbine including a nozzle ring, the nozzle ring including a plurality of stationary vanes, each vane of the plurality of stationary vanes including a plurality of injection ports arranged at an outer surface of the vane and a gas supply system to supply variable gas flow to and out of the plurality of injection ports.

Various methods and systems are provided for a variable geometry turbine. In one example, a system for an engine comprises a turbocharger turbine including a nozzle ring, the nozzle ring including a plurality of stationary vanes, each vane of the plurality of stationary vanes including a plurality of injection ports arranged at an outer surface of the vane and a gas supply system to supply variable gas flow to and out of the plurality of injection ports.

A system is provided that includes a controller configured to determine one or more propulsion-generating vehicles in a group of propulsion-generating vehicles that have an increased risk for damage to an engine system based on operation at a fueling level that is less than a designated threshold fueling level for at least a designated time period. The controller is further configured to determine respective power outputs for the propulsion-generating vehicles in the group such that the one or more propulsion-generating vehicles having the increased risk for damage to the engine system do not operate below the designated threshold fueling level for longer than the designated time period.

A system is provided that includes a controller configured to determine one or more propulsion-generating vehicles in a group of propulsion-generating vehicles that have an increased risk for damage to an engine system based on operation at a fueling level that is less than a designated threshold fueling level for at least a designated time period. The controller is further configured to determine respective power outputs for the propulsion-generating vehicles in the group such that the one or more propulsion-generating vehicles having the increased risk for damage to the engine system do not operate below the designated threshold fueling level for longer than the designated time period.

An engine heater system for heating a diesel engine of a vehicle. The engine heater system including a gas turbine. A heat exchanger communicatively coupled to an exhaust of the gas turbine. An electric generator including connection members to couple to a battery of the vehicle, and a shaft rotatably attached between the gas turbine and the electric generator. The heat exchanger utilizes the exhaust of the gas turbine to keep the diesel engine of the vehicle within a desired temperature range, and the electric generator charges the battery when the gas turbine rotates the shaft.

An engine heater system for heating a diesel engine of a vehicle. The engine heater system including a gas turbine. A heat exchanger communicatively coupled to an exhaust of the gas turbine. An electric generator including connection members to couple to a battery of the vehicle, and a shaft rotatably attached between the gas turbine and the electric generator. The heat exchanger utilizes the exhaust of the gas turbine to keep the diesel engine of the vehicle within a desired temperature range, and the electric generator charges the battery when the gas turbine rotates the shaft.

An engine heater system for heating a diesel engine of a vehicle. The engine heater system including a gas turbine. A heat exchanger communicatively coupled to an exhaust of the gas turbine. An electric generator including connection members to couple to a battery of the vehicle, and a shaft rotatably attached between the gas turbine and the electric generator. The heat exchanger utilizes the exhaust of the gas turbine to keep the diesel engine of the vehicle within a desired temperature range, and the electric generator charges the battery when the gas turbine rotates the shaft.

In a method for heating an operating agent for a rail vehicle, particularly for heating a reducing agent for the after-treatment of exhaust gas, a coolant liquid is pumped through a cooling circuit of the internal combustion engine by a pump when an operating agent heating system is in an operating mode. In the operating mode, the coolant liquid is pumpable through a main heating circuit by of the pump in order to heat the operating agent in a reservoir. When the operating agent heating system is in a preheating mode, the main heating circuit is divided into two sub-circuits of a preheating circuit, the flow being able to pass through both of the sub-circuits.

In a method for heating an operating agent for a rail vehicle, particularly for heating a reducing agent for the after-treatment of exhaust gas, a coolant liquid is pumped through a cooling circuit of the internal combustion engine by a pump when an operating agent heating system is in an operating mode. In the operating mode, the coolant liquid is pumpable through a main heating circuit by of the pump in order to heat the operating agent in a reservoir. When the operating agent heating system is in a preheating mode, the main heating circuit is divided into two sub-circuits of a preheating circuit, the flow being able to pass through both of the sub-circuits.

An energy recovery system for a power system is disclosed. The power system includes an engine, a generator driven by the engine, an electrical bus configured to receive electrical power from the generator, an exhaust conduit configured to receive exhaust gases from the engine, and a turbocharger coupled to the exhaust conduit. The energy recovery system includes a bypass conduit, a turbo-generator, and a synchronizer. The bypass conduit is coupled to the exhaust conduit, and facilitates a portion of exhaust gases from the exhaust conduit to bypass the turbocharger. The turbo-generator is coupled to the bypass conduit, and is driven by the portion of exhaust gases bypassing the turbocharger. Further, the synchronizer modulates one or more parameters of electrical power received from the turbo-generator based on one or more parameters of electrical power present on the electrical bus. The synchronizer transmits modulated electrical power to the electrical bus.