Abstract: A ball bearing assembly can include an outer race that includes an inner surface; an inner race that comprises an outer surface that includes an imperfection and a shoulder disposed at a shoulder angle where the imperfection is disposed at an angle in a range from about 50% of the shoulder angle to about 100% of the shoulder angle; and balls disposed between the inner surface of the outer race and the outer surface of the inner race. Various other examples of devices, assemblies, systems, methods, etc., are also disclosed.

Abstract: A ball bearing assembly can include an outer race that includes an inner surface; an inner race that comprises an outer surface that includes an imperfection and a shoulder disposed at a shoulder angle where the imperfection is disposed at an angle in a range from about 50% of the shoulder angle to about 100% of the shoulder angle; and balls disposed between the inner surface of the outer race and the outer surface of the inner race. Various other examples of devices, assemblies, systems, methods, etc., are also disclosed.

Abstract: An exemplary compressor wheel includes a proximate end, a distal end, an axis of rotation, a z-plane positioned between the proximate end and the distal end and a proximate end extension wherein the extension includes one or more pilot diameters and an engagement mechanism for engagement with an operational shaft of a turbocharger.

Abstract: The present invention relates to a turbocharger compressor diffuser loading plate that is in contact with a vaned diffuser and that is in communication with the compressor volute. The diffuser loading plate is pressure loaded so that it moves axially in response to pressure thereby maintaining an effective seal of the open side of the vaned diffuser. The present invention minimizes a loss in compressor performance caused by movement of the compressor housing.

Abstract: An exemplary compressor wheel includes a proximate end, a distal end, an axis of rotation, a z-plane positioned between the proximate end and the distal end and a proximate end extension wherein the extension comprises one or more pilot diameters and an engagement mechanism for engagement with an operational shaft of a turbocharger.

Abstract: A variable geometry turbocharger employs multiple vanes in the turbine inlet with a unison ring and integral cast wall in the turbine housing forming the nozzle walls. The unison ring incorporates actuation slots receiving tabs on the vanes for opening the closing the nozzle area upon rotation of the unison ring. An integral electrohydraulic actuator rotates the unison ring through a rack and pinion driven crank shaft with direct position feedback to the spring biased variable current solenoid via a cam on the crank shaft.

Abstract: An improved compressor wheel assembly for a turbocharger or the like includes a centrifugal compressor wheel having a boreless hub to substantially improve wheel fatigue life. The compressor wheel is formed as by casting to include an integral and internally threaded mounting sleeve extending coaxially from the boreless hub. In the assembly, the mounting sleeve extends through an opening in a compressor backplate for threaded connection to a turbocharger shaft, with a thrust collar spacer being interposed between axially facing shoulders defined respectively on the mounting sleeve and shaft to ensure accurate axial positioning of the components. An annular seal flange on the thrust collar spacer extends axially into the backplate opening in generally concentric spaced relation about the mounting sleeve. This seal flange is adapted to carry one or more seal rings for engaging the backplate, thereby sealing the passage of the mounting sleeve and shaft through the backplate opening.