# US 10,767,554 B2 · Turbine for an exhaust gas turbocharger with a two-volute turbine housing and a valve arrangement having improved outflow > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,767,554 B2 - Document ID: US10767554B2 - Status: Granted - Kind: B2 - Application number: 16/300,082 - Filed: 2017-03-22 - Published: 2019-06-13 - Granted: 2020-09-08 - Earliest claimed: 2016-05-12 - Assignees: Continental Automotive GmbH - Applicants: Continental Automotive GmbH - Inventors: Georg Mehne; Christoph Sparrer - Web page: https://patentgrep.com/patent/US10767554B2 ## CPC - F02B 37/186: {Arrangements of actuators or linkage for bypass valves} - F01D 17/105: {by passing part of the fluid} - F01D 25/162: {Bearing supports} - F02B 37/025: {Multiple scrolls or multiple gas passages guiding the gas to the pump drive} - F02B 37/183: {Arrangements of bypass valves or actuators therefor} - 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) - 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 A turbine for an exhaust gas turbocharger has a housing with two exhaust gas volutes, between which a separating wall is provided and which have a common waste-gate opening. The turbine housing is equipped with a linear valve, which has a valve element and a displacement shaft for actuating the valve element. The displacement shaft of the linear valve is led through the separating wall in a separating wall plane and, in the direction of the shaft longitudinal axis of the linear valve, is movably arranged in the separating wall. The valve element is arranged in a separating wall cutout between the exhaust gas volutes and is led out of the area of the exhaust gas volutes in the direction toward the waste-gate opening, toward a valve seat which is formed on the inner side of the waste-gate opening, facing the exhaust gas volutes. ## Claims ### Claim 1 A turbine for an exhaust-gas turbocharger, the turbine comprising: a turbine housing having two exhaust-gas volutes for a flow of exhaust gas, a separating wall between said two exhaust-gas volutes, and a common wastegate opening; a linear valve having a valve element for selectively opening and closing said common wastegate opening, and a displacement shaft, with a shaft longitudinal axis, for actuating said valve element; said displacement shaft extending through said separating wall in a direction of a separating wall plane spanned by said separating wall and movably disposed in a direction of said shaft longitudinal axis in said separating wall; and said valve element being disposed in a separating wall cutout between said exhaust-gas volutes and being led out from a region of said exhaust-gas volutes, in a direction of the wastegate opening, toward a valve seat which is formed on an inner side of said wastegate opening facing towards said exhaust-gas volutes. ### Claim 2 (depends on 1) The turbine according to claim 1, wherein said valve element has a valve disk which, in a closed state of said linear valve, lies sealingly against said valve seat, and a valve body on a side of said valve disk which is averted from said displacement shaft, said valve body projecting into said wastegate opening. ### Claim 3 (depends on 2) The turbine according to claim 2, wherein said valve body, at least in one partial region, has an external geometry selected from the group consisting of conical, cylindrical, hemispherical and parabolic, which also defines an opening cross section of said wastegate opening when said linear valve is opening. ### Claim 4 (depends on 2) The turbine according to claim 2, which comprises a volute valve slide disposed between said valve disk and said displacement shaft and fixed with said valve disk, and wherein said valve slide is received, adjustably in the direction of said shaft longitudinal axis, in a corresponding slide recess in said separating wall. ### Claim 5 (depends on 4) The turbine according to claim 4, wherein said separating wall is formed, in the region of said valve slide, with a volute connecting window which is formed as an aperture through said separating wall and which is arranged in said separating wall to be closed by said volute valve slide when said linear valve is in the closed state. ### Claim 6 (depends on 5) The turbine according to claim 5, wherein said volute valve slide is formed with a valve window being an aperture through said volute valve slide and wherein, with a progressive opening of said linear valve, said valve window progressively opens up said volute connecting window formed in said separating wall, to fluidically connect that said two exhaust-gas volutes to one another. ### Claim 7 (depends on 1) The turbine according to claim 1, wherein said valve seat is formed by a valve seat ring installed in said wastegate opening. ### Claim 8 (depends on 7) The turbine according to claim 7, wherein said valve seat ring is pressed into said turbine housing at said wastegate opening. ### Claim 9 (depends on 1) The turbine according to claim 1, wherein said linear valve and said separating wall, arranged in the region of said linear valve, between said exhaust-gas volutes are constituent parts of a separate valve structural unit inserted into said turbine housing. ### Claim 10 (depends on 9) The turbine according to claim 9, wherein said valve structural unit inserted into said turbine housing and is connected to said turbine housing by way of a connection selected from the group consisting of a screw connection, a welded connection, a press-fit connection, a caulked connection and a riveted connection.