TURBOCHARGER HOUSING
FIG6 is a bottom view of the center housing shown in FIG2 
Further, as shown in FIG6, in some embodiments, it may be necessary to mount a drain pipe flange to the oil outlet 68 that has a size that is relatively large, such that there may not be sufficient space for mounting the same to the center housing 44 in an orientation that is perpendicular to the longitudinal direction 1. To allow the drain pipe flange to fit in the center housing 44, it may therefore be necessary to mount the same in an inclined manner. Accordingly, a flange mounting portion 80 may be provided around the oil outlet 68 such that it includes a pair of mounting structures 82a, 82b that are arranged opposite to each other on both sides of the oil outlet opening 78 along a fourth direction d4 that extends at a fourth predetermined angle ε with respect to a center plane p of the center housing 44 that is perpendicular to the longitudinal direction 1. In other words, the mounting structures 82a, 82b are arranged such that the corresponding drain pipe flange is rotated by the angle ε about the direction of extension of the oil outlet opening 78, for example, the vertical direction. In this manner, the drain pipe flange can be easily installed on the center housing 44, for example, without projecting from the same. In some embodiments, the fourth predetermined angle ε is between 5 degrees and 30 degrees, preferably between 10 degrees and 20 degrees, in particular, about 18 degrees.
bottom view
5
between
38
turbine inlet
12
turbocharger
80
flange mounting portion
39
mounting flange
6
andFig. about
76
mounting surface
78
44
center housing
68
oil outlet
['1. A turbocharger (12) for an engine system (10), comprising: a compressor housing (30) including a compressor inlet (32) and a compressor outlet (34); a turbine housing (36) including a turbine inlet (38), a turbine wheel (40) and a turbine outlet (42); a center housing (44) connected between the compressor housing (30) and the turbine housing (36); and a shaft (15) supported in the center housing (44), the shaft (15) extending in a longitudinal direction (1) of the turbocharger (12), wherein the turbine inlet (38) includes a first mounting interface (48) for connecting the turbocharger (12) to an exhaust system of the engine system (10), the first mounting interface (48) facing in a first direction (d1) perpendicular to the longitudinal direction (1), wherein the turbine outlet (42) includes a second mounting interface (50) for connecting the turbocharger (12) to an exhaust aftertreatment system (24, 25) of the engine system (10), the second mounting interface (50) facing in a second direction (d2) that extends at a first predetermined angle (α) with respect to the plane defined by the longitudinal direction (1) and the first direction (d1), wherein the center housing (44) includes an oil outlet (68) disposed below the shaft (15) for draining lubricant from the same, wherein a substantially plane mounting surface (76) is provided around an oil outlet opening (78) of the oil outlet (68), and wherein the substantially plane mounting surface (76) extends at a predetermined third angle (δ) with respect to the plane orthogonal to the predetermined first direction (d1).', '2. The turbocharger of claim 1, wherein the second mounting interface (50) includes a peripheral mounting flange (52) extending around an outlet opening (54) of the turbine outlet (42).', '6. The turbocharger of claim 5, wherein the third direction (d3) is substantially the same as the second direction (d2), the first and second predetermined angles (α, β) being between 5° and 45°, preferably between 10° and 30°, in particular, about 20°.', '12. The turbocharger of claim 1 or 10, wherein the center housing (44) includes a flange mounting portion (80) configured for mounting a drain flange to the same, the flange mounting portion (80) including a pair of mounting structures (82a, 82b) arranged opposite to each other on both sides of the oil outlet opening (78) along a fourth direction (d4), wherein the fourth direction (d4) extends at a fourth predetermined angle (ε) with respect to a center plane (p) of the center housing (44) that is perpendicular to the longitudinal direction (1).']