Abstract: To solve the problems of compressor wheel blade flow separation causing surge type noises when an exhaust gas recirculation (EGR) duct introduces into the compressor exhaust gases to be returned to the engine, the exhaust gas is fed into an annular volume, defined between inner and outer walls or an annular transition cavity shaped as a radially expanded, axially flattened cylindrical space in the compressor inlet, so that the generally unidirectional radial flow from an EGR duct is re-directed and organized as it is turned from generally radial to generally axial, merging with the general inlet flow and presenting the compressor wheel with airflow of “circumferentially uniform” flow velocity.

Abstract: A heat shield for a turbocharger has a disc-like configuration. The heat shield includes an outer radial portion, an outer wall, a connecting wall, and an inner wall. The outer radial portion is disposed circumferentially around an axis of the heat shield. The outer wall extends from the outer radial portion in a first axial direction. The connecting wall extends radially inward substantially perpendicularly from the outer wall. The inner wall extends substantially perpendicularly from the connecting wall in a second axial direction opposite the first axial direction.

Abstract: A heat shield for a turbocharger has a disc-like configuration. The heat shield includes an outer radial portion, an outer wall, a connecting wall, and an inner wall. The outer radial portion is disposed circumferentially around an axis of the heat shield. The outer wall extends from the outer radial portion in a first axial direction. The connecting wall extends radially inward substantially perpendicularly from the outer wall. The inner wall extends substantially perpendicularly from the connecting wall in a second axial direction opposite the first axial direction.

Abstract: To solve the problems of compressor wheel blade flow separation causing surge type noises when an exhaust gas recirculation (EGR) duct introduces into the compressor exhaust gases to be returned to the engine, the exhaust gas is fed into an annular volume, defined between inner and outer walls or an annular transition cavity shaped as a radially expanded, axially flattened cylindrical space in the compressor inlet, so that the generally unidirectional radial flow from an EGR duct is re-directed and organized as it is turned from generally radial to generally axial, merging with the general inlet flow and presenting the compressor wheel with airflow of “circumferentially uniform” flow velocity.

Abstract: To solve the problems of compressor wheel blade flow separation causing surge type noises when a compressor return or recirculation valve is opened or closed, recirculation airflow from a compressor recirculation valve is fed into an annular volume, defined between inner and outer walls or shaped as a radially expanded, axially flattened cylindrical space in the compressor inlet, so that the generally unidirectional radial flow from the compressor recirculation valve is re-directed and organized as it is turned from generally radial to generally axial, merging with the general inlet flow and presenting the compressor wheel with airflow of“circumferentially uniform” flow velocity.

Abstract: A number of variations may include a product comprising: an electrified turbocharger comprising: an electric motor surrounding a portion of a shaft constructed and arranged to selectively drive the shaft, wherein the electric motor further comprises a stator comprising a lamination stack; a housing surrounding the electric motor, wherein the housing includes a plurality of channels constructed and arranged to lubricate a first bearing; and wherein the lamination stack is constructed and arranged to include at least one conduit to pass oil through the electric motor to a second bearing.

Abstract: A turbocharger (10) having a compressor housing (15) and a bearing housing (17). The compressor housing (15) including an elliptical shaped wall (16) extending between an air inlet (11) and a volute (13) formed by the compressor housing (15). The bearing housing (17) forms a flat bearing housing wall (14) opposing the compressor wall (16) wherein the compressor wall (16) and bearing housing wall (14) form an elliptical diffuser (12) between the air inlet (11) and the volute (13).

Abstract: A number of variations may include a product comprising: an electrified turbocharger comprising: an electric motor surrounding a portion of a shaft constructed and arranged to selectively drive the shaft, wherein the electric motor further comprises a stator comprising a lamination stack; a housing surrounding the electric motor, wherein the housing includes a plurality of channels constructed and arranged to lubricate a first bearing; and wherein the lamination stack is constructed and arranged to include at least one conduit to pass oil through the electric motor to a second bearing.

Abstract: A number of variations may include a method that may include casting or providing a central core comprising titanium aluminide; and metal injection molding a shell comprising titanium aluminide around the central core to produce a rotor assembly.

Abstract: A drive system (1) for a vehicle includes an electric motor (12) and a gas turbine assembly (28). The electric motor (12) includes a rotor (16) coupled to a drive shaft (14). The gas turbine assembly (28) includes a turbine (30) including a turbine wheel (34) mounted on the drive shaft (14), a burner (70) that burns fuel and provides exhaust gas to drive the turbine wheel (34), and a compressor (50) that provides compressed air to the burner (70). The gas turbine assembly (28) is coupled to the drive shaft (14) of the electric motor (12). The drive system (1) also includes gear train unit (90) that has the drive shaft (14) as an input shaft, has an output shaft (94) connected to vehicle wheels (100), and transmits power from one of the electric motor (12) or gas turbine assembly (28) to the wheels (100).

Abstract: A drive system (1) for a vehicle includes an electric motor (12) and a gas turbine assembly (28). The electric motor (12) includes a rotor (16) coupled to a drive shaft (14). The gas turbine assembly (28) includes a turbine (30) including a turbine wheel (34) mounted on the drive shaft (14), a burner (70) that burns fuel and provides exhaust gas to drive the turbine wheel (34), and a compressor (50) that provides compressed air to the burner (70). The gas turbine assembly (28) is coupled to the drive shaft (14) of the electric motor (12). The drive system (1) also includes gear train unit (90) that has the drive shaft (14) as an input shaft, has an output shaft (94) connected to vehicle wheels (100), and transmits power from one of the electric motor (12) or gas turbine assembly (28) to the wheels (100).

Abstract: A turbocharger internal heat shield (1) is provided having axial flow turning vanes (2). Additionally, the heat shield may have a volute divider wall extender (5).

Abstract: A turbocharger (10) having a compressor housing (15) and a bearing housing (17). The compressor housing (15) including an elliptical shaped wall (16) extending between an air inlet (11) and a volute (13) formed by the compressor housing (15). The bearing housing (17) forms a flat bearing housing wall (14) opposing the compressor wall (16) wherein the compressor wall (16) and bearing housing wall (14) form an elliptical diffuser (12) between the air inlet (11) and the volute (13).

Abstract: To solve the problems of compressor wheel blade flow separation causing surge type noises when a compressor return or recirculation valve is opened or closed, bypass airflow from a compressor recirculation valve is fed into an annular volume, defined between inner and outer walls or shaped as a radially expanded, axially flattened cylindrical space in the compressor inlet, so that the generally unidirectional radial flow from the compressor recirculation valve is re-directed and organized as it is turned from generally radial to generally axial, merging with the general inlet flow and presenting the compressor wheel with airflow of “circumferentially uniform” flow velocity.

Abstract: To solve the problems of compressor wheel blade flow separation causing surge type noises when a compressor return or recirculation valve is opened or closed, bypass airflow from a compressor recirculation valve is fed into an annular volume, defined between inner and outer walls or shaped as a radially expanded, axially flattened cylindrical space in the compressor inlet, so that the generally unidirectional radial flow from the compressor recirculation valve is re-directed and organized as it is turned from generally radial to generally axial, merging with the general inlet flow and presenting the compressor wheel with airflow of “circumferentially uniform” flow velocity.

Abstract: In an aluminum turbocharger bearing housing, there is a potential for wear of the bearing housing at the interface with the turbine housing and/or the bearing system. One area of potential concern is the interface between the flange of the bearing housing and an abutment of the turbine housing. With a protective element at the interface, the potential for wear, and thus misalignment of the rotating assembly with the housings in which they operate can be mitigated. The protective element can be a cap for the bearing housing flange or a heat shield adapted to cover certain faces of the bearing housing flange. The protective element can be a sleeve provided within a bore in the bearing housing. The protective element can be made of a material with a higher heat resistance and/or a higher wear resistance than the aluminum bearing housing.

Abstract: A two-stage turbocharging system with a high pressure (HP) turbine and a low pressure (LP) turbine, exhaust piping connecting an engine to the HP turbine inlet, exhaust piping connecting the HP turbine outlet to the LP turbine inlet, piping connecting the LP turbine outlet to an aftertreatment device, and branched bypass piping having an inlet and first and second branches, the inlet connected to the engine to HP turbine inlet exhaust piping, the first branch outlet connected to the LP turbine inlet, the second branch outlet connected to the aftertreatment device, and an R2S valve in the first branch and a warm-up valve in said second branch. By opening of the valve, exhaust gas can bypass both the HP and LP turbines and flow to, e.g., the catalytic converter. The R2S valve and the warm-up valve may be integrated into a single exhaust flow control unit.

Abstract: To solve the problems of compressor wheel blade flow separation causing surge type noises when a compressor return or recirculation valve is opened or closed, bypass airflow from a compressor recirculation valve is fed into an annular volume, defined between inner and outer walls or shaped as a radially expanded, axially flattened cylindrical space in the compressor inlet, so that the generally unidirectional radial flow from the compressor recirculation valve is re-directed and organized as it is turned from generally radial to generally axial, merging with the general inlet flow and presenting the compressor wheel with airflow of “circumferentially uniform” flow velocity.

Abstract: A two-stage turbocharging system with a high pressure (HP) turbine and a low pressure (LP) turbine, exhaust piping connecting an engine to the HP turbine inlet, exhaust piping connecting the HP turbine outlet to the LP turbine inlet, piping connecting the LP turbine outlet to an aftertreatment device, and branched bypass piping having an inlet and first and second branches, the inlet connected to the engine to HP turbine inlet exhaust piping, the first branch outlet connected to the LP turbine inlet, the second branch outlet connected to the aftertreatment device, and an R2S valve in the first branch and a warm-up valve in said second branch. By opening of the valve, exhaust gas can bypass both the HP and LP turbines and flow to, e.g., the catalytic converter. The R2S valve and the warm-up valve may be integrated into a single exhaust flow control unit.

Abstract: A turbocharger unit having an aerodynamically enhanced pocket, comprising a turbine having a turbine housing and a turbine wheel connected to a shaft along with a compressor having a compressor housing and a compressor wheel mounted on the same shaft. There is an intermediate housing disposed between the turbine housing and the compressor housing, circumscribing the shaft, and having a compressor wheel pocket. There is a series of bearings located in the intermediate housing for supporting the shaft. There is also a series of fluid passages located in the intermediate housing which provide fluid to lubricate the bearings. A seal is used for the prevention of oil from entering the compressor wheel pocket. The compressor wheel pocket has an aerodynamically enhanced pocket for the improvement of pressure balance behind the compressor wheel, preventing the oil in the intermediate housing from entering the compressor housing.