Abstract: A particle collector includes a housing within an internal chamber having inlet and outlet ports. The housing can comprise two joined-together housing members. A collector element is disposed in the internal chamber and includes a particulate passage extending axially therethrough. A gas passageway is disposed within the chamber between a housing inside diameter and a collector element outside diameter, and is sized to produce a minimal pressure drop through the particle collector. The collector element is connected to the housing. A collection port is connected with the collector element and extends from the particulate passage to a location outside of the internal chamber for removing collected particulate matter from within the housing when the particle collector is placed into operation within an exhaust gas flow stream.

Abstract: The shape, of a vane for use in a variable nozzle assembly of a turbocharger was designed, including a step of defining a camberline curve and a thickness curve by means of two Bézier curves having a certain number of control points, and a step of applying computational fluid dynamics analysis and a Design of Experiments methodology for optimizing the setting of the control points to improve performance of the vane. As result, a distinct vane shape as shown in the drawings was obtained.

Abstract: A particle collector includes a housing within an internal chamber having inlet and outlet ports. The housing can comprise two joined-together housing members. A collector element is disposed in the internal chamber and includes a particulate passage extending axially therethrough. A gas passageway is disposed within the chamber between a housing inside diameter and a collector element outside diameter, and is sized to produce a minimal pressure drop through the particle collector. The collector element is connected to the housing. A collection port is connected with the collector element and extends from the particulate passage to a location outside of the internal chamber for removing collected particulate matter from within the housing when the particle collector is placed into operation within an exhaust gas flow stream.

Abstract: A titanium-aluminide turbine wheel (120, 220, 320, 420) is joined to the end of a shaft (110, 210, 310, 410) by utilizing a titanium surface on the end of the shaft to be joined to the wheel, and electron-beam welding the wheel onto the titanium surface on the shaft. A steel shaft (110, 310, 410) can have a titanium-containing end piece (130, 330, 430) mechanically joined (by brazing, bonding, or welding) to the end of the shaft, and the end piece can be directly electron-beam welded to the wheel. Alternatively, the shaft (210) can be formed as a titanium member and the end (212) of the shaft can be directly electron-beam welded to the wheel (220). In another embodiment, a ferrous end piece (330) is mechanically joined to the titanium-aluminide turbine wheel (320) and then the end piece is directly electron-beam welded to the end of a steel shaft (310). Alternatively, a silver-titanium alloy member (430) is sandwiched between the wheel (420) and a steel shaft (410) and is melted to join the parts together.

Abstract: A titanium-aluminide turbine wheel (120, 220, 320, 420) is joined to the end of a shaft (110, 210, 310, 410) by utilizing a titanium surface on the end of the shaft to be joined to the wheel, and electron-beam welding the wheel onto the titanium surface on the shaft. A steel shaft (110, 310, 410) can have a titanium-containing end piece (130, 330, 430) mechanically joined (by brazing, bonding, or welding) to the end of the shaft, and the end piece can be directly electron-beam welded to the wheel. Alternatively, the shaft (210) can be formed as a titanium member and the end (212) of the shaft can be directly electron-beam welded to the wheel (220). In another embodiment, a ferrous end piece (330) is mechanically joined to the titanium-aluminide turbine wheel (320) and then the end piece is directly electron-beam welded to the end of a steel shaft (310). Alternatively, a silver-titanium alloy member (430) is sandwiched between the wheel (420) and a steel shaft (410) and is melted to join the parts together.