Abstract: An additive manufacturing system may include an additive manufacturing device and a process map generation system. The process map generation system may generate an operational process map responsive to mathematical simulations of an additive manufacturing device, cause the additive manufacturing device to print a plurality of test structures responsive to the operational process map, detect one or more defects in each of the plurality of test structures, automatically update the operational process map responsive to the defects, and modify one or more operating parameters of the additive manufacturing device responsive to the updated operational process map.

Abstract: A method of immobilizing a metal catalyst in a porous support includes additively forming a precursor structure on a substrate from a metal catalyst and at least one of a metal oxide or a metal cluster compound; exposing the precursor structure to a vapor of an organic linker; and reacting the at least one of the metal oxide or the metal cluster compound in the precursor structure with the organic linker to form a porous support that immobilizes the metal catalyst.

Abstract: Cutting elements for earth-boring tools may include a cutting edge located proximate to a periphery of the cutting element. The cutting edge may be positioned and configured to contact an earth formation during an earth-boring operation. The cutting edge may include a first portion having a first radius of curvature and a second portion having a second, larger radius of curvature. The second portion may be circumferentially offset from the first portion.

Abstract: A method of calibrating a laser of an additive manufacturing system involves processing a test pattern with the laser while varying one or more of laser power and/or scan speed. Thermal energy emitted from the resulting meltpool is measured while processing the test pattern. The power of the laser is calculated using a relationship between volumetric energy density and the thermal emissions, and the laser power is adjusted based on the calculated laser power. An additive manufacturing system for performing such a method may include a laser, a thermal sensor configured to measure meltpool thermal emissions, a processor configured to calculate a laser power based on the measured meltpool thermal emissions of the test pattern, and a controller configured to adjust the laser power based on the calculated laser power.

Abstract: Cutting elements for earth-boring tools may include a cutting edge located proximate to a periphery of the cutting element. The cutting edge may be positioned and configured to contact an earth formation during an earth-boring operation. The cutting edge may include a first portion having a first radius of curvature and a second portion having a second, larger radius of curvature. The second portion may be circumferentially offset from the first portion.

Abstract: Examples described herein provide a computer-implemented method that includes aggregating data. The method further includes filtering the data to eliminate objects known not to be suitable for additive manufacturing. The method further includes performing machine learning on the data to identify objects suitable for additive manufacturing. The method further includes generating, using additive manufacturing, at least one of the objects identified as being suitable for additive manufacturing.

Abstract: The present disclosure relates to development of a self-service artificial intelligence platform by integrating data-based model with physics-based model and vice-versa to generate real-time recommendations and control actions. Further, the present disclosure provides the system and method for at least one of data collection and preparation, developing a hybrid system/control model, and developing a physics-based model driven by data-based model and vice versa to generate real-time recommendations and control actions.

Abstract: Various systems and methods are provided for exhaust gas recirculation, including an exhaust gas recirculation (EGR) system includes an EGR passage coupling an engine exhaust system to an engine intake system, a first EGR cooler positioned in the EGR passage, the first EGR cooler configured to cool EGR with a first fluid, and a second EGR cooler positioned in the EGR passage downstream of the first EGR cooler, the second EGR cooler configured to cool EGR with a second fluid.

Abstract: Disclosed herein is a system and a method for improving the energy management of HVAC equipment. The system comprising: a plurality of sensors distributed in a building for sensing a set of parameters including environmental information, thermal zone information, energy consumption information, operational parameter information and field information from the building; a network for connecting the plurality of sensors; a server includes a hybrid platform with physics based simulation model and machine learning model for processing and controlling the parameters of the HVAC equipment.

Abstract: Various methods and systems are provided for an exhaust gas recirculation cooler including a plurality of cooling tubes. In one example, an exhaust gas recirculation (EGR) cooler includes a plurality of cooling tubes positioned within a housing of the EGR cooler, each cooling tube of the plurality of cooling tubes extending between and directly coupled to tube sheets of the EGR cooler at ends of each cooling tube, where at least one end of one or more cooling tubes of a first portion of the plurality of cooling tubes, inward of a tube sheet coupled to the at least one end, includes a compliant region, where the first portion is positioned proximate to an exhaust inlet of the EGR cooler.

Abstract: Various methods and systems are provided for an exhaust gas recirculation cooler including a plurality of cooling tubes. In one example, an exhaust gas recirculation (EGR) cooler includes a plurality of cooling tubes positioned within a housing of the EGR cooler, each cooling tube of the plurality of cooling tubes extending between and directly coupled to tube sheets of the EGR cooler at ends of each cooling tube, where at least one end of one or more cooling tubes of a first portion of the plurality of cooling tubes, inward of a tube sheet coupled to the at least one end, includes a compliant region, where the first portion is positioned proximate to an exhaust inlet of the EGR cooler.

Abstract: Various methods and systems are provided for an exhaust gas recirculation cooler including a plurality of cooling tubes. In one example, an exhaust gas recirculation (EGR) cooler includes a plurality of cooling tubes positioned within a housing of the EGR cooler, each cooling tube of the plurality of cooling tubes extending between and directly coupled to tube sheets of the EGR cooler at ends of each cooling tube, where at least one end of one or more cooling tubes of a first portion of the plurality of cooling tubes, inward of a tube sheet coupled to the at least one end, includes a compliant region, where the first portion is positioned proximate to an exhaust inlet of the EGR cooler.

Abstract: Various systems and methods are provided for exhaust gas recirculation. In one example, an exhaust gas recirculation (EGR) system includes an EGR passage coupling an engine exhaust system to an engine intake system, a first EGR cooler positioned in the EGR passage, the first EGR cooler configured to cool EGR with a first fluid, and a second EGR cooler positioned in the EGR passage downstream of the first EGR cooler, the second EGR cooler configured to cool EGR with a second fluid.

Abstract: Various systems and methods are provided for exhaust gas recirculation. In one example, an exhaust gas recirculation (EGR) system includes an EGR passage coupling an engine exhaust system to an engine intake system, a first EGR cooler positioned in the EGR passage, the first EGR cooler configured to cool EGR with a first fluid, and a second EGR cooler positioned in the EGR passage downstream of the first EGR cooler, the second EGR cooler configured to cool EGR with a second fluid.

Abstract: A heat sink assembly includes plural thermally conductive hair fins configured to be thermally coupled with a component to be cooled. The hair fins are elongated along a first direction and separated from each other by gaps along different second and third directions. The hair fins are configured to receive heat from the component to be cooled and to transfer the heat to cooling air disposed between the hair fins in order to cool the component.

Abstract: Various systems and methods are provided for exhaust gas recirculation. In one example, an exhaust gas recirculation (EGR) system includes an EGR passage coupling an engine exhaust system to an engine intake system, a first EGR cooler positioned in the EGR passage, the first EGR cooler configured to cool EGR with a first fluid, and a second EGR cooler positioned in the EGR passage downstream of the first EGR cooler, the second EGR cooler configured to cool EGR with a second fluid.

Abstract: Various methods and systems are provided for an exhaust gas recirculation cooler including a plurality of cooling tubes. In one example, an exhaust gas recirculation (EGR) cooler includes a plurality of cooling tubes positioned within a housing of the EGR cooler, each cooling tube of the plurality of cooling tubes extending between and directly coupled to tube sheets of the EGR cooler at ends of each cooling tube, where at least one end of one or more cooling tubes of a first portion of the plurality of cooling tubes, inward of a tube sheet coupled to the at least one end, includes a compliant region, where the first portion is positioned proximate to an exhaust inlet of the EGR cooler.

Abstract: An exhaust casing for use with a turbocharger includes a hollow body that has two mutually opposed large walls, which extend along first and second major dimensions of the hollow body and are spaced apart by a minor dimension of the hollow body, the hollow body defining a plenum and an inlet nozzle opening into the plenum along the minor dimension of the hollow body. The casing further includes an outlet nozzle opening from the plenum along one of the major dimensions of the hollow body.

Abstract: Various methods and systems are provided for cooling exhaust system components. In one example, a system comprises heat shield surrounding at least a part of an engine exhaust passage valve positioned in an engine exhaust passage of an engine, and an air jet configured to direct compressed air into the heat shield. The heat shield contains the compressed air around an exterior of the at least the part of the engine exhaust passage valve.