Flow strakes for turbocharger bearing housing oil core

A bearing housing for a turbocharger, the turbocharger including a turbine wheel, a compressor wheel, and a shaft rotatably connecting the turbine wheel and the compressor wheel, the bearing housing comprising:

• a first end proximate to the turbine wheel;
• a second end proximate to the compressor wheel;
• a central chamber disposed between the first end and the second end and configured to house, at least, the shaft;
• an oil drain disposed radially outward of the shaft configured for directing oil out of the bearing housing;
• an oil core disposed radially outward of the shaft and radially inward of the oil drain, the oil core configured for communicating oil towards the oil drain and having an inner wall;
• and
• one or more strakes protruding radially inward from the inner wall of the oil core, the one or more strakes configured to direct oil within the oil core towards the oil drain;
• at least two of the strakes oriented generally parallel to the shaft, and extending in opposed directions;
• and
• wherein the strakes avoid swirling of the oil as the oil flows towards the oil drain.