Compressor of an exhaust-gas turbocharger

A compressor (1) of an exhaust-gas turbocharger (ATL) comprising:

• a compressor housing (2) having a longitudinal axis (L) in which a compressor wheel (3) is arranged, the compressor housing having an inlet (4),
• a contour ring (5) which is arranged in the compressor housing (2) between the inlet (4) and the compressor wheel (3), and which, together with an adjacent circumferential wall (7) of the compressor housing (2), delimits a circulation chamber (6) which has a first circulation chamber connecting opening (8) facing toward the inlet (4) and a second circulation chamber connecting opening (9) adjacent to the compressor wheel (3), the first circulation chamber connecting opening (8) and the second circulation chamber connecting opening (9) permitting fluid communication with the circulation chamber, each of the first circulation chamber connecting opening and the second circulation chamber connecting opening being defined by a portion of the contour ring and a portion of the compressor housing, and
• an exhaust-gas recirculation inlet line (10) defined by the compressor housing (2), an axis (A) being disposed along a length of the exhaust-gas recirculation inlet line (10), the exhaust-gas recirculation inlet line (10) having first and second ends, wherein the second end of the exhaust-gas recirculation inlet line (10) has an opening (18) which opens out into the circulation chamber (6) at the first circulation chamber connecting opening (8), and
• wherein the axis (A) of the exhaust-gas recirculation inlet line (10) is at a first angle (α) that has an inclined non-perpendicular relationship to the longitudinal axis (L) of the compressor housing (2) and a second angle (β) that has a tangentially inclined, non-perpendicular relationship to the compressor housing (2) that at least partially delimits the circulation chamber (6), the second angle further being relative to a cross-section circumferential direction of the compressor housing (2), and the inclination of the first angle (α) along with the tangential inclination of the second angle (β) of the exhaust-gas recirculation line (10), in combination, cooperate to produce a swirl generation of fluid in the circulation chamber (6) that results from fluid being received from the exhaust-gas recirculation inlet line (10) during operation of the compressor (1) of the exhaust-gas turbocharger (ATL).