# US 2018/0023459 A1 · 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 2018/0023459 A1 - Document ID: US20180023459A1 - Status: Published application - Kind: A1 - Application number: 15/548,031 - Filed: 2016-02-02 - Published: 2018-01-25 - Earliest claimed: 2015-02-03 - Assignees: BorgWarner Inc. - Applicants: BorgWarner Inc. - Inventors: Rolf SAUERSTEIN; Philip Christoph PARMA; Sean RYLANCE; Andrew DAY - Web page: https://patentgrep.com/patent/US20180023459A1 ## CPC - F02B 37/18: by bypassing exhaust {from the inlet to the outlet of turbine or to the atmosphere} - F01D 25/08: Cooling (of machines or engines in general F01P); Heating; Heat-insulation (of blade-carrying members, of blades F01D5/00) - F01N 3/2006: {Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating (by electrically controlling the supply of combustible mixture or its constituents only F02D41/0235)} - F02B 37/183: {Arrangements of bypass valves or actuators therefor} - F01D 17/105: {by passing part of the fluid} - F01D 25/24: Casings (modified for heating or cooling F01D25/14); Casing parts, e.g. diaphragms, casing fastenings (casings for rotary machines or engines in general F16M {; special arrangements in stators dealing with breaking-off of part of rotor F01D21/045}) - F01N 3/2892: {Exhaust flow directors or the like, e.g. upstream of catalytic device} - F01N 13/14: having thermal insulation {(exhaust manifolds F01N13/102)} - F01N 2240/20: a flow director or deflector - F01N 2340/06: Arrangement of the exhaust apparatus relative to the turbine of a turbocharger - F02B 39/005: {Cooling of pump drives} - F05D 2220/40: in turbochargers - Y02T 10/12: Improving ICE efficiencies - F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G) - F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D) - F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16) - F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract An exhaust gas turbocharger (1) including a compressor housing (2), a bearing housing (3), a turbine housing (4) in which a turbine wheel (5) is arranged, which has a housing inlet (6), which has a turbine spiral (7) connecting to the housing inlet (6), which has a housing outlet (8), and which has a wastegate arrangement (9), which in the open state brings the housing inlet (6) into flow connection with the housing outlet (8) for guiding a wastegate mass flow. The wastegate insert part (10) is arranged in the turbine housing (4) between the turbine wheel (5) and the housing outlet (8) and the open wastegate arrangement (9) introduces the wastegate mass flow into the wastegate insert arrangement (9). ## Claims ### Claim 1 An exhaust gas turbocharger (1) comprising: compressor housing (2), a bearing housing (3), a turbine housing (4) in which a turbine wheel (5) is arranged, which has a turbine housing inlet (6), which has a turbine spiral (7) connecting to the turbine housing inlet (6), which has a turbine housing outlet (8), and which has a wastegate arrangement (9), which in the open state brings the turbine housing inlet (6) into flow connection with the turbine housing outlet (8) for guiding a wastegate mass flow, wherein a wastegate insert part (10) is arranged in the turbine housing (4) between the turbine wheel (5) and the turbine housing outlet (8) and the open wastegate arrangement (9) when open introduces the wastegate mass flow into the wastegate insert part (10), and the wastegate insert part (10) is surrounded with heat insulation (11). ### Claim 2 (depends on 1) The exhaust gas turbocharger according to claim 1, wherein the wastegate insert part (1) is a separately producible component which is inserted into the turbine housing (4) and fixed in the same. ### Claim 3 (depends on 1) The exhaust gas turbocharger according to claim 1, wherein the wastegate insert part (10) is a sheet metal insert part (10). ### Claim 4 (depends on 1) The exhaust gas turbocharger according to claim 1, wherein the turbine housing (4) is a cast housing. ### Claim 5 (depends on 1) The exhaust gas turbocharger according to claim 1, wherein an annular gap (12) is arranged in the region of the turbine housing outlet (8) downstream of the wastegate insert part (10) when viewed in the flow direction (S) of the exhaust gases discharging from the turbine housing (4). ### Claim 6 (depends on 1) The exhaust gas turbocharger according to claim 1, wherein the size of the wastegate insert part (10) is matched to the wastegate mass throughput. ### Claim 7 (depends on 5) The exhaust gas turbocharger according to claim 5, wherein a width (B) of the annular gap (12) is matched to the wastegate mass throughput. ### Claim 8 (depends on 1) The exhaust gas turbocharger according to claim 1, wherein the wastegate insert part (10) is a wastegate spiral. ### Claim 9 (depends on 1) The exhaust gas turbocharger according to claim 1, wherein the wastegate insert part (10) has a sleeve (18) which is provided with a collar (20; 29) on an end face. ### Claim 10 (depends on 9) The exhaust gas turbocharger according to claim 9, wherein the collar (20) is provided with through openings (21). ### Claim 11 (depends on 10) The exhaust gas turbocharger according to claim 10, wherein the collar (29) is connected to the sleeve (28) via spacers (30) and the through openings (31) are provided between the collar (29) and the sleeve (28). ### Claim 12 (depends on 9) The exhaust gas turbocharger according to claim 9, wherein the insert part (10) has a sleeve body (32) which has a waist and is provided with through openings (33) directed radially inwardly. ### Claim 13 (depends on 12) The exhaust gas turbocharger according to claim 12, wherein the sleeve body (32) is provided with an annular stop collar (34).