A compressor (1) of an exhaust-gas turbocharger (ATL), having a compressor wheel (2) and a compressor housing (3) which has a housing longitudinal axis (A). The compressor wheel (2) is arranged in the housing. An inlet duct (5) runs from a compressor inlet (4) to the compressor wheel (2). A recircul
A compressor (1) of an exhaust-gas turbocharger (ATL), having a compressor wheel (2) and a compressor housing (3) which has a housing longitudinal axis (A). The compressor wheel (2) is arranged in the housing. An inlet duct (5) runs from a compressor inlet (4) to the compressor wheel (2). A recirculation duct (6) has a compressor-wheel-side inflow opening (7) and a compressor-inlet-side return flow opening (8). The inflow opening (7) and the return flow opening (8) can be opened and closed.
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1. A compressor (1) of an exhaust-gas turbocharger (ATL), having a compressor wheel (2); anda compressor housing (3) which has a housing longitudinal axis (A),in which the compressor wheel (2) is arranged,which has an inlet duct (5), said inlet duct running from a compressor inlet (4) to the compres
1. A compressor (1) of an exhaust-gas turbocharger (ATL), having a compressor wheel (2); anda compressor housing (3) which has a housing longitudinal axis (A),in which the compressor wheel (2) is arranged,which has an inlet duct (5), said inlet duct running from a compressor inlet (4) to the compressor wheel (2) and having a hooded ported shroud recirculation duct (6) which has a compressor-wheel-side inflow opening (7) and a compressor-inlet-side return flow opening (8), andmeans for opening and closing the return flow opening (8) while leaving the inflow opening (7) open,wherein the recirculation duct (6) is delimited by an inner surface (14′) of an adjacent housing region (11′) of the compressor housing (3), an axially moveable sleeve (9) and an axially moveable slide (10) upstream of the axially moveable sleeve (9), andwherein said return flow opening (8) is opened and closed by moving the axially moveable sleeve (9) relative to the slide (10) or by moving the axially moveable slide (10) relative to the sleeve (9). 2. A compressor (1) of an exhaust-gas turbocharger (ATL), having a compressor wheel (2); anda compressor housing (3) which has a housing longitudinal axis (A),in which the compressor wheel (2) is arranged,which has an inlet duct (5), said inlet duct running from a compressor inlet (4) to the compressor wheel (2) and having a hooded ported shroud recirculation duct (6) which has a compressor-wheel-side inflow opening (7) and a compressor-inlet-side return flow opening (8), andmeans for opening and closing at least one of the inflow opening (7) and the return flow opening (8),wherein the recirculation duct (6) is delimited by an axially moveable sleeve (9), an axially moveable slide (10) upstream of the axially moveable sleeve (9) and an inner surface (14′) of an adjacent housing region (11′) of the compressor housing (3). 3. The compressor as claimed in claim 2, wherein the slide (10) has a rounded first return flow surface (11) which leads to the return flow opening (8). 4. The compressor as claimed in claim 3, wherein the sleeve (9) has a rounded second return flow surface (12). 5. The compressor as claimed in claim 2, wherein the housing region (11′) has a first inflow surface (13) which is inclined relative to the longitudinal axis (A) and which leads to the inflow opening (7). 6. The compressor as claimed in claim 5, wherein the sleeve (9) has a second inflow surface (14), the inclination of which corresponds to the inclination of the first inflow surface (13). 7. The compressor as claimed in claim 2, wherein the slide (10) can be actuated by means of an actuator. 8. The compressor as claimed in claim 2, wherein the sleeve (9) can be actuated by means of an actuator. 9. The compressor as claimed in claim 2, wherein the recirculation duct (6) runs parallel to the inflow duct (5). 10. The compressor as claimed in claim 2, wherein the axially movable slide (10) is the hood of the hooded ported shroud when in the open position. 11. A compressor (1) of an exhaust-gas turbocharger (ATL), having a compressor wheel (2); anda compressor housing (3) which has a housing longitudinal axis (A),in which the compressor wheel (2) is arranged,which has an inlet duct (5), said inlet duct running from a compressor inlet (4) to the compressor wheel (2) and having a hooded ported shroud recirculation duct (6) which has a compressor-wheel-side inflow opening (7) and a compressor-inlet-side return flow opening (8), andmeans for opening and closing at least one of the inflow opening (7) and the return flow opening (8),wherein the recirculation duct (6) is delimited by an inner surface (14′) of an adjacent housing region (11′) of the compressor housing (3), an axially moveable sleeve (9) and an axially moveable slide (10) upstream of the axially moveable sleeve (9), andwherein the slide (10) can be actuated by means of an actuator, the sleeve (9) can be actuated by means of an actuator, and wherein both the inflow opening (7) and the return flow opening (8) can be closed at the same time by actuation of both the slide (10) and the sleeve (9).
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이 특허에 인용된 특허 (4)
Gu, Ronren; Peery, Eric S., Compressor with variable-geometry ported shroud.
Sumser, Siegfried; Fledersbacher, Peter; Wirbeleit, Friedrich; Willand, Juergen; Lehmann, Hans-Georg, Exhaust gas turbocharger for an internal combustion engine and a corresponding method.
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