# US 10,309,404 B2 · Exhaust-gas turbocharger > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,309,404 B2 - Document ID: US10309404B2 - Status: Granted - Kind: B2 - Application number: 14/778,629 - Filed: 2014-03-25 - Published: 2016-02-11 - Granted: 2019-06-04 - Earliest claimed: 2013-04-04 - Assignees: BorgWarner Inc. - Applicants: BorgWarner Inc. - Inventors: Michael Stilgenbauer; Gerald Schall; Rolf Sauerstein; Roman Koenig; Matthias Ruh - Web page: https://patentgrep.com/patent/US10309404B2 ## CPC - F04D 25/045: {the pump wheel carrying the fluid driving means, e.g. turbine blades} - F02B 33/40: of non-positive-displacement type - F02B 37/183: {Arrangements of bypass valves or actuators therefor} - F04D 27/009: {by bleeding, by passing or recycling fluid} - F04D 27/0215: {Arrangements therefor, e.g. bleed or by-pass valves} - F04D 17/10: for compressing or evacuating - Y02T 10/12: Improving ICE efficiencies - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) - F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G) - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract An exhaust-gas turbocharger (1) having a compressor (2) which has a compressor housing (3); a turbine (4) which has a turbine housing (5); and a compressor-side and/or turbine-side charge pressure regulating device (6) which has a shut-off element (7) which opens or closes a flow opening (9). The shut-off element (7) is in the form of a slide which is mounted on a guide (8) so as to be longitudinally displaceable along a longitudinal central line (LM8) of the guide (8), and the flow opening (9) is arranged at least substantially at a right angle (α) with respect to the longitudinal central line (LM8) of the guide (8). ## Claims ### Claim 1 An exhaust-gas turbocharger (1), having a compressor (2) which has a compressor housing (3) housing a compressor wheel (3′); a turbine (4) which has a turbine housing (5) housing a turbine wheel (4′), the compressor wheel (3′) connected to the turbine wheel (4′) via a shaft (24) having an axis of rotation (L); a bypass duct connected to a turbine housing inlet (19) or a compressor housing outlet comprising a cylindrical guide spigot (14); and a compressor-side or turbine-side charge pressure regulating device (6) which has a shut-off element (7) which opens or closes a flow opening (9) in said cylindrical guide spigot (14), wherein the shut-off element (7) is in the form of a slide head (10) which is mounted on a guide (8) formed by a cylindrical outer wall (15) of said cylindrical guide spigot (14) so as to be longitudinally displaceable along a longitudinal central line (LMs) of the guide (8) between a closed position and an open position, the flow opening (9) partially encircling said cylindrical outer wall (15) of said cylindrical guide spigot (14) and being arranged at least substantially at a right angle with respect to the longitudinal central line (LMs) of the guide (8), wherein the cylindrical guide spigot (14) has a face wall (16) that adjoins and closes off an end of the cylindrical outer wall (15), wherein the charge pressure regulating device (6) is (a) a wastegate arrangement of the turbine housing (5) wherein the shut-off element opens or closes a bypass of the turbine (4) or (b) a compressor bypass arrangement of the compressor housing (3) wherein the shut-off element opens or closes the compressor bypass arrangement of the compressor housing (3), and the slide head (10) is connected to a slide rod (11), and the slide head (10) is pot-shaped with a cylindrical guide and seal wall (13), and wherein the longitudinal central line (LM8) of displacement of the guide (8) is offset from the axis of rotation (L). ### Claim 2 (depends on 1) The exhaust-gas turbocharger as claimed in claim 1, wherein the outer wall (15) guides the slide head (10) by way of the guide and seal wall (13). ### Claim 3 (depends on 1) The exhaust-gas turbocharger as claimed in claim 1, wherein the slide head (10) is movable between the closed position, in which it closes the flow opening (9), and the open position, in which it opens up the flow opening (9). ### Claim 4 (depends on 1) The exhaust-gas turbocharger as claimed in claim 1, wherein the shut-off element (7) is actuated by an actuator (17). ### Claim 5 (depends on 1) The exhaust-gas turbocharger as claimed in claim 1, wherein the charge pressure regulating device (6) is a wastegate arrangement of the turbine housing (5) of the turbine (4). ### Claim 6 (depends on 5) The exhaust-gas turbocharger as claimed in claim 5, wherein the shut-off element (7) is guided in the turbine housing (5) via a guide sleeve (3). ### Claim 7 (depends on 1) The exhaust-gas turbocharger as claimed in claim 1, wherein the charge pressure regulating device (6) is a compressor bypass arrangement. ### Claim 8 (depends on 1) The exhaust-gas turbocharger as claimed in claim 1, wherein the slide head (10) and the slide rod (11) are formed in one piece. ### Claim 9 (depends on 1) The exhaust-gas turbocharger as claimed in claim 1, wherein the guide spigot (14) and the turbine housing (5) are formed in one piece. ### Claim 10 (depends on 1) The exhaust-gas turbocharger as claimed in claim 1, wherein the longitudinal central line (LM8) of displacement of the guide (8) is at an angle to the axis of rotation (L) of the shaft (24). ### Claim 11 An exhaust-gas turbocharger (1), having a compressor (2) which has a compressor housing (3) housing a compressor wheel (3′); a turbine (4) which has a turbine housing (5) housing a turbine wheel (4′), the compressor wheel (3′) connected to the turbine wheel (4′) via a shaft (24) having an axis of rotation (L); a bypass duct connected to a turbine housing inlet (19) or a compressor housing outlet comprising a cylindrical guide spigot (14); and a compressor-side or turbine-side charge pressure regulating device (6) which has a shut-off element (7) which opens or closes a flow opening (9), wherein the shut-off element (7) is in the form of a slide head (10) which is mounted on a guide (8) formed by a cylindrical outer wall (15) of said cylindrical guide spigot (14) so as to be longitudinally displaceable along a longitudinal central line (LM8) of the guide (8) between a closed position and an open position, and the flow opening (9) partially encircling said cylindrical outer wall (15) of said cylindrical guide spigot (14) and being arranged at least substantially at a right angle (a) with respect to the longitudinal central line (LMs) of the guide (8), the slide head (10) is pot-shaped with a cylindrical guide and seal wall (13) that points into an interior space (12), the cylindrical guide spigot (14) has a face wall (16) that adjoins and closes off an end of the cylindrical outer wall (15), the flow opening (9) is arranged in the cylindrical outer wall (15) of the cylindrical guide spigot (14), and the longitudinal central line (LM8) of displacement of the guide (8) is offset from the axis of rotation (L) of the shaft (24). ### Claim 12 (depends on 11) The exhaust-gas turbocharger as claimed in claim 11, wherein the longitudinal central line (LM8) of displacement of the guide (8) is at an angle to the axis of rotation (L) of the shaft (24).