Abstract: A 3D printer includes a holding area holding material to be used to produce a part and at least one component for producing the part through layer-wise additive manufacturing. A data storage device in the 3D printer stores instructions for generating build parameter values, the instructions including empirically derived data, relationships, and/or equations. A processor in the 3D printer receives values for a public build parameter set and a category for the material wherein the category represents multiple different materials. The processor executes instructions to determine values for a private build parameter set that vary based on the properties of the material. The values for the private build parameter set are determined from the received values for the public build parameter set and the received category. The processor then uses the received values for the public build parameter set and the values for the private build parameter set to build the part.

Abstract: A method for reducing engine deposits in an internal combustion engine, using selective fuel and EGR supply scheduling, is provided including an engine having a first and second plurality of cylinders. A fuel injection system for injecting fuel into both of the first and second plurality of cylinders is located on the engine. An exhaust gas recirculation system supplies a portion of the exhaust gases from the engine to both of the first and second plurality of cylinders. During operation, the engine repeatedly combusts fuel in both of the first and second plurality of cylinders. Additional fuel is supplied to one or more selected cylinders following each combustion cycle while recirculated exhaust gases are supplied from a remaining plurality of cylinders, preventing interaction of post-combustion injected and recirculated exhaust gases and reducing deposition of undesirable material.