Abstract: In one embodiment, a system for managing communication connections in a virtualization environment includes a plurality of host machines implementing a virtualization environment, wherein each of the host machines includes a hypervisor, at least one user virtual machine (user VM), and a distributed file server that includes file server virtual machines (FSVMs) and associated local storage devices. Each FSVM and associated local storage device are local to a corresponding one of the host machines, and the FSVMs conduct I/O transactions with their associated local storage devices based on I/O requests received from the user VMs. Each of the user VMs on each host machine sends each of its representative I/O requests to an FSVM that is selected by one or more of the FSVMs for each I/O request based on a lookup table that maps a storage item referenced by the I/O request to the selected one of the FSVMs.

Abstract: In one embodiment, a system for managing communication connections in a virtualization environment includes a plurality of host machines implementing a virtualization environment, wherein each of the host machines includes a hypervisor, at least one user virtual machine (user VM), and a distributed file server that includes file server virtual machines (FSVMs) and associated local storage devices. Each FSVM and associated local storage device are local to a corresponding one of the host machines, and the FSVMs conduct I/O transactions with their associated local storage devices based on I/O requests received from the user VMs. Each of the user VMs on each host machine sends each of its representative I/O requests to an FSVM that is selected by one or more of the FSVMs for each I/O request based on a lookup table that maps a storage item referenced by the I/O request to I/O the selected one of the FSVMs.

Abstract: Systems and methods described herein provide automatic generation of routes and scheduling of rides for ride sharing between users of a same entity based at least on attributes of the users. The server identifies commuting preferences of users of the same entity and whether each of the users prefer to drive or ride. The server receives information identifying a home location and a location of the same entity. The server generates a route for a group of users for commuting by the group of users to the location of the same entity. For the group of users, the server determines a user that is a driver and one or more users that are riders. The server communicates the route information to the group of users.

Abstract: A reducing agent heating system. The reducing agent heating system provides a dual energy heating strategy using both an electric heater and an engine coolant line such that emission control may be promoted efficiently. The electric heater and engine coolant line are disposed in close proximity to the reducing agent such that efficient and quick thawing of frozen or freezing reducing agent is facilitated.

Abstract: A viscous fan drive for an engine cooling system has an output coupling defining a fluid operating chamber, an input coupling disposed in the fluid operating chamber, and a driveshaft coupled to the input coupling and defining a driveshaft axis. A main bearing has an inner race coupled to the driveshaft and an outer race coupled to the output coupling, the main bearing defining a bearing axis, wherein the bearing axis is normally substantially coincident with the driveshaft axis. A brace is disposed between the outer race of the main bearing and the output coupling. The engine cooling system may be provided on a machine having a rotatable frame that promotes precession of the output coupling, wherein the brace prevents movement of the main bearing along the driveshaft in response to the output coupling precession.

Abstract: An air-to-fluid intercooler is disclosed. The air-to-fluid intercooler may include a core assembly including an outer circumference and an inner circumference, at least one annular tube body configured to direct flow of a cooling fluid within the core assembly, and at least one curved fin coupled to an exterior surface of the at least one annular tube body and configured to direct a flow of charge air through the core assembly.

Abstract: A heat exchanger for a fluid handling system is disclosed. The heat exchanger may have an inlet configured to receive a fluid at a first temperature, and an outlet configured to discharge the fluid at a second temperature lower than the first. The heat exchanger may also have at least one fluid passageway disposed to conduct the fluid from the inlet to the outlet. The at least one fluid passageway may have a first section fabricated from a first material, and a second section fabricated from a dissimilar second material. At least one of the first and second materials may include a thermally conductive polymer.

Abstract: A cooling system is provided having a first heat exchanger configured to remove heat from at least a portion of a first fluid and a second heat exchanger configured to remove heat from a portion of a second fluid. The second heat exchanger is located downstream of the first heat exchanger relative to the flow of air passing through the first heat exchanger so that a substantial portion of the air passing through the first heat exchanger also passes through the second heat exchanger. The cooling system also has a valve located to regulate the flow of the second fluid through the second heat exchanger. The cooling system further has a controller configured to actuate the valve to restrict the flow of the second fluid through the second heat exchanger when the first heat exchanger is removing heat from the first fluid.

Abstract: An air-to-air aftercooler may include at least one tube body configured to direct a flow of charged air, wherein the at least one tube body includes a first material. The air-to-air aftercooler may also include a header assembly coupled to ends of the at least one tube body. The header assembly may include a second different material.

Abstract: A heat exchanger including an inlet tank with an internal manifold space and a plurality of modules including a core having a plurality of tubes. The modules are in fluid communication with the inlet tank and the tubes terminate inside the manifold space so that a cooling media can flow in a direct path from the manifold space into the tubes.

Abstract: A cooling system is provided having a first heat exchanger configured to remove heat from at least a portion of a first fluid and a second heat exchanger configured to remove heat from a portion of a second fluid. The second heat exchanger is located downstream of the first heat exchanger relative to the flow of air passing through the first heat exchanger so that a substantial portion of the air passing through the first heat exchanger also passes through the second heat exchanger. The cooling system also has a valve located to regulate the flow of the second fluid through the second heat exchanger. The cooling system further has a controller configured to actuate the valve to restrict the flow of the second fluid through the second heat exchanger when the first heat exchanger is removing heat from the first fluid.

Abstract: A reducing agent heating system and method. The reducing agent heating system provides a dual energy heating strategy using both an electric heater and an engine coolant line such that emission control may be promoted efficiently. The electric heater and engine coolant line are disposed in close proximity to the reducing agent such that efficient and quick thawing of frozen or freezing reducing agent is facilitated.

Abstract: An air-to-fluid intercooler is disclosed. The air-to-fluid intercooler may include a core assembly including an outer circumference and an inner circumference, at least one annular tube body configured to direct flow of a cooling fluid within the core assembly, and at least one curved fin coupled to an exterior surface of the at least one annular tube body and configured to direct a flow of charge air through the core assembly.

Abstract: A heat exchanger for a fluid handling system is disclosed. The heat exchanger may have an inlet configured to receive a fluid at a first temperature, and an outlet configured to discharge the fluid at a second temperature lower than the first. The heat exchanger may also have at least one fluid passageway disposed to conduct the fluid from the inlet to the outlet. The at least one fluid passageway may have a first section fabricated from a first material, and a second section fabricated from a dissimilar second material. At least one of the first and second materials may include a thermally conductive polymer.

Abstract: An air-to-air aftercooler may include at least one tube body configured to direct a flow of charged air, wherein the at least one tube body includes a first material. The air-to-air aftercooler may also include a header assembly coupled to ends of the at least one tube body. The header assembly may include a second different material.

Abstract: A gas to air heat exchanger includes corrosive resistant tubes made from or internally coated with one material, and high thermal conductivity air fins made from another material. This construction allows for meeting heat transfer requirements in a spatially constrained application, such as over the road trucks, where a mixture of recirculated exhaust gas and incoming air are compressed, then cooled, before being supplied to the engine intake. In one example, the heat exchanger includes tubes made from stainless steel brazed to relatively thin copper air fins in a low temperature brazing process, and the tubes are brazed on respective ends to heads of stainless steel via a high temperature brazing process. This core is then joined to an aluminum inlet tank and possible non-metallic outlet tank via a mechanical crimping process that positions a seal between the tanks and the respective heads.