Abstract: A method of manufacturing a metallic foam based heat exchanger includes positioning an aluminum foam block, for example, within a housing defining a first fluid passage, and placing the block in contact with a second portion of the housing defining at least one other fluid passage, the second housing portion being an extrusion. A brazing flux material and a brazing filler are applied to at least one of the foam and the extrusion, the foam being thermally coupled to the extrusion with the brazing filler via heating in a brazing furnace. A heat exchanger includes a housing having a fluid passage with a metallic foam such as an aluminum foam therein. The metallic foam is attached to a metallic extrusion such as an aluminum extrusion, and connected therewith via a thermally conducting brazing filler.

Abstract: An engine system includes an engine such as a compression ignition internal combustion engine, including a heat exchanger in an exhaust system thereof. The heat exchanger including at least one carbon foam block for cooling exhaust gas with cooling air. An exhaust system segment includes a carbon foam based heat exchanger configured to exchange heat between exhaust gas and cooling air at least in part via the carbon foam.

Abstract: A radiator may have a first cooler that may be connected to a lower end portion of the radiator. The first cooler may comprise a bottom compartment. The bottom compartment may have a front wall, a rear wall, first and second spaced apart side walls, a bottom wall and a lower portion. A radiator outlet port member may be connected to the lower portion. A cooling core may be positioned in the bottom compartment. A baffle may be connected to the bottom compartment and positioned above the cooling core. An opening may be disposed in the baffle at a location closer to a one of the first and second side walls than another of said first and second walls.

Abstract: A thermoelectric power unit is provided. The power unit may include at least one thermoelectric device. A first fluid passage may be disposed on a first side of the thermoelectric device and may be configured to receive a hot exhaust stream. The power unit may further include a plurality of heat pipes configured to focus thermal energy from a fluid flowing through the first passage toward the first side of the thermoelectric device. A second fluid passage may be disposed on a second side of the thermoelectric device opposite of the first fluid passage and configured to conduct thermal energy away from the thermoelectric device.

Abstract: A cooling system for a work machine may comprise a reservoir configured to hold a supply of fluid, a source of pressurized fluid and a valve configured to receive the pressurized fluid from the source of pressurized fluid. A first working unit and a second working unit may be connected to the valve in parallel. One of The first and second working units may be adapted to receive pressurized fluid on a priority basis from the valve. The first and second working units may be fluidly connected to the reservoir by a circulation conduit and may be connected to a first heat exchanger by a bypass conduit. The bypass conduit may be configured to pass only a portion of the fluid flow to be passed from the first and second working units to the first heat exchanger. The first heat exchanger may be fluidly connected to the reservoir and may be adapted to pass the portion of the fluid flow to the reservoir.