A product may be provided for use with a turbocharging system. A housing may be configured to house a bearing. A shaft may extend through the bearing. A turbine wheel may be connected to one end of the shaft. The housing may include a wall forming an opening and defining a surface facing the opening. The bearing may have a segment extending into the opening and mating with the surface. The wall may include an oil spray groove opening through the surface and having an outlet directed at the shaft.

The invention relates to a shaft-hub connection (1), particularly for mounting a rotor wheel on a shaft (10). The shaft-hub connection (1) comprises a shaft (10), a hub (20) and a filler material (30). The shaft (10) comprises an end section (11) on one end. A receiving region (21) is arranged in the hub (20). The end section (11) is arranged in the receiving region (21), with an intermediate layer of the filler material (30) positioned inbetween. The filler material (30) forms undercuts in the axial and rotational direction, in relation to the end section (11) and in relation to the receiving region (21), so as to create a positive embodiment of the shaft-hub connnection (1).

The invention relates to a shaft-hub connection (1), particularly for mounting a rotor wheel on a shaft (10). The shaft-hub connection (1) comprises a shaft (10), a hub (20) and a filler material (30). The shaft (10) comprises an end section (11) on one end. A receiving region (21) is arranged in the hub (20). The end section (11) is arranged in the receiving region (21), with an intermediate layer of the filler material (30) positioned inbetween. The filler material (30) forms undercuts in the axial and rotational direction, in relation to the end section (11) and in relation to the receiving region (21), so as to create a positive embodiment of the shaft-hub connnection (1).

A vane lever (46) for a guide apparatus (28) of a turbocharger (10) may include a base (49). The base (49) may include a bore (48) disposed therethrough. An arm (50) may extend from the base (49) and may be receivable in an aperture (42) of an adjustment ring (40) of the guide apparatus (28). A protuberance (52) may extend from the base (49) and may be capable of limiting axial movement of the adjustment ring (40).

A vane lever (46) for a guide apparatus (28) of a turbocharger (10) may include a base (49). The base (49) may include a bore (48) disposed therethrough. An arm (50) may extend from the base (49) and may be receivable in an aperture (42) of an adjustment ring (40) of the guide apparatus (28). A protuberance (52) may extend from the base (49) and may be capable of limiting axial movement of the adjustment ring (40).

A compressor device for a turbocharger. The compressor device includes a compressor housing and a separate snorkel member which are provided separately and then connected together. The compressor housing has two air passages separated by a partition wall, while the snorkel member similarly has two separate air ducts separated in part by a partition wall. The two components have mating fittings to connect them together.

A compressor device for a turbocharger. The compressor device includes a compressor housing and a separate snorkel member which are provided separately and then connected together. The compressor housing has two air passages separated by a partition wall, while the snorkel member similarly has two separate air ducts separated in part by a partition wall. The two components have mating fittings to connect them together.

A method for diagnosing a combustion machine, wherein the combustion machine comprises at least one internal combustion engine and one intake air line via which fresh air can be fed to the internal combustion engine. In addition, at least one intake air compressor and, upstream from the intake air compressor, a control flap are integrated into the intake air line. In one operating state of the combustion machine, the control flap is closed so far that a negative pressure relative to the ambient pressure is produced by means of the running internal combustion engine in the portion of the intake air line that lies between the control flap and the internal combustion engine, with an actual value that is associated with this negative pressure being compared with a target value and the presence or absence of leakage in this portion of the intake air line being deduced from any difference that might exist between the actual value and the target value.

The present teachings generally include an energy recovery device with heat dissipation mechanisms. The energy recovery device can include a main housing, rotors disposed in the main housing, rotor shafts associated with the rotors, and a sub-housing. The sub-housing can have an engaging surface that faces and is spaced apart from the first receiving surface of the main housing with a first gap when the first sub-housing is attached to the main housing.

A bearing system and method may include a bearing element that may have a first surface. A mating element may have a second surface that may face the first surface. A fluid film interface may be defined between the first and the second surfaces. The mating element may rotate about an axis and relative to the bearing element. An axial direction may be defined parallel to the axis. A radial direction may be defined perpendicular to the axis. The first surface may have a profile that may vary in the axial direction and that may varies in the radial direction. The profile may direct a fluid present in the fluid film interface in a direction or directions having circumferential and/or axial components.