Abstract: Thermal management systems and methods related to controlling temperature of internal combustion engines are provided. In one embodiment, a thermal management system includes an air intake structure defining an air intake passage therethrough coupled to a plurality of cylinders in an engine, a multi-stage cooling assembly, positioned in the air intake passage, including an air-to-coolant intercooler for cooling intake air and an air-to-air heat exchanger for cooling intake air, an air-to-coolant radiator fluidly coupled with the air-to-coolant intercooler of the multi-stage cooling assembly, a first fan operable to provide air flow to the multi-stage cooling assembly and the air-to-coolant radiator, and a second fan operable to provide air flow to the air-to-coolant radiator.

Abstract: Thermal management assemblies and systems related to controlling temperature of internal combustion engines are provided. In one embodiment, a multi-stage cooling assembly, includes a body forming an air inlet and an air outlet, a plurality of exterior fins extending outward from an exterior of the body, the plurality of exterior fins differing in fin type, fin density, or both fin type and fin density as a function of the location of the plurality of exterior fins relative to the exterior of the body, and an air-to-coolant intercooler positioned in an interior of the body and adjacent the air inlet.

Abstract: Thermal management systems and methods related to controlling temperature of internal combustion engines are provided. In one embodiment, a thermal management system includes an air intake structure defining an air intake passage therethrough coupled to a plurality of cylinders in an engine, a first turbocharger including a first compressor positioned in the air intake passage, a second turbocharger including a second compressor positioned in the air intake passage between the first compressor and the plurality of cylinders, a multi-stage cooling assembly, positioned in the air intake passage between the first compressor and the second compressor, including an air-to-coolant intercooler for cooling intake air and an air-to-air heat exchanger for cooling intake air, and an air-to-coolant radiator fluidly coupled with the air-to-coolant intercooler of the multi-stage cooling assembly.

Abstract: Thermal management systems and methods related to controlling temperature of internal combustion engines are provided. In one embodiment, a thermal management system includes an air intake structure defining an air intake passage therethrough coupled to a plurality of cylinders in an engine, a multi-stage cooling assembly, positioned in the air intake passage, including an air-to-coolant intercooler for cooling intake air and an air-to-air heat exchanger for cooling intake air, an air-to-coolant radiator fluidly coupled with the air-to-coolant intercooler of the multi-stage cooling assembly, a first fan operable to provide air flow to the multi-stage cooling assembly and the air-to-coolant radiator, and a second fan operable to provide air flow to the air-to-coolant radiator.

Abstract: A locomotive includes an engine (12), an intercooler (16), and an oil cooler (28), each having respective cooling passages formed therein. The locomotive also includes a cooling system (10) in selective communication with the respective cooling passages for selectively providing a first coolant (56) and a second coolant (52) at a higher temperature than the first coolant to the cooling passages. A method of operating the cooling system includes providing, in a first mode, a first coolant flow (26) to the intercooler and a second coolant flow (30) to the oil cooler at a first temperature different than the first coolant flow to achieve preferential cooling of the intercooler. The method also includes providing, in a second mode, the first coolant flow to the intercooler and the second coolant flow to the oil cooler at a second temperature different than the first coolant flow to achieve preferential cooling of the oil cooler.