# US 2014/0196696 A1 · Supercharged internal combustion engine with twin-flow turbine and method for operating an internal combustion engine of said type > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0196696 A1 - Document ID: US20140196696A1 - Status: Published application - Kind: A1 - Application number: 14/153,937 - Filed: 2014-01-13 - Published: 2014-07-17 - Earliest claimed: 2013-01-17 - Assignees: Ford Global Technologies, LLC - Applicants: Ford Global Technologies, LLC - Inventors: Vanco Smiljanovski; Helmut Matthias Kindl; Uwe Spaeder; Rob Stalman - Web page: https://patentgrep.com/patent/US20140196696A1 ## CPC - F02B 33/00: Engines characterised by provision of pumps for charging or scavenging - F01D 17/165: {for radial flow, i.e. the vanes turning around axes which are essentially parallel to the rotor centre line (F01D17/167 takes precedence)} - F02B 37/002: {the exhaust supply to one of the exhaust drives can be interrupted} - F02B 37/24: by using pumps or turbines with adjustable guide vanes - 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 supercharged internal combustion engine may include a twin-flow turbine with variable vane geometry. One example method to operate the device permits optimized operation of the internal combustion engine at low exhaust gas flow rates. ## Claims ### Claim 1 A supercharged internal combustion engine having at least one cylinder head with at least two cylinders, comprising: each cylinder has at least one outlet opening for discharging the exhaust gases out of the cylinder via an exhaust-gas discharge system, and each outlet opening is adjoined by an exhaust line; at least two cylinders are configured in such a way as to form two groups with in each case at least one cylinder; the exhaust lines of the cylinders of each cylinder group merge in each case to form an overall exhaust line such that an exhaust manifold is formed, and the two overall exhaust lines are connected to a two-channel turbine, which comprises a rotor which is mounted on a rotatable shaft in a turbine housing, such that in each case one overall exhaust line is connected to one of the two inlet openings of the two-channel turbine, wherein each inlet opening is adjoined by an one channel of the two-channel turbine and the two channels are separated from one another as far as the rotor by means of a wall, such that the exhaust-gas streams of the two channels are conducted separate from one another to the rotor; and wherein a first group of adjustable guide blades is provided at the rotor-side end of the first channel, and a second group of adjustable guide blades is provided at the rotor-side end of the second channel. ### Claim 2 (depends on 1) The supercharged internal combustion engine as claimed in claim 1, wherein a common adjustment mechanism is provided for both guide blade groups, by means of which common adjustment mechanism the guide blades of the two groups can be adjusted simultaneously and in a same direction. ### Claim 3 (depends on 1) The supercharged internal combustion engine as claimed in claim 1, wherein, for the guide blade groups, there is provided a dedicated adjustment mechanism by means of which the guide blades of one group can be adjusted independently of the guide blades of the other group. ### Claim 4 (depends on 2) The supercharged internal combustion engine as claimed in claim 2, wherein the adjustment mechanism further comprises, for the adjustment of a guide blade, at least one rotatable rod on which the guide blade is rotationally conjointly arranged. ### Claim 5 (depends on 2) The supercharged internal combustion engine as claimed in claim 2, wherein the common adjustment mechanism comprises a rotatable rods for the adjustment of the guide blades, wherein the rotatable rods extend through a wall and, on each rotatable rod, there is rotationally conjointly arranged a guide blade of a first group and a guide blade of a second group. ### Claim 6 (depends on 1) The supercharged internal combustion engine as claimed in claim 1, wherein the wall which separates the two channels as far as the rotor is a housing wall formed integrally with the turbine housing. ### Claim 7 (depends on 1) The supercharged internal combustion engine as claimed in one claim 1, wherein the wall which separates the two channels as far as the rotor is of a modular construction. ### Claim 8 (depends on 7) The supercharged internal combustion engine as claimed in claim 7, wherein the wall which is of the modular construction further comprises a ring which is fixedly connected to a turbine housing and which surrounds the rotor and which forms a rotor-side end of the wall. ### Claim 9 (depends on 8) The supercharged internal combustion engine as claimed in claim 8, wherein the ring further comprises circular disks which are rotatably mounted in a flush manner in circular recesses of the ring; and wherein each disk serves to hold at least one guide blade and is rotationally conjointly connected to said guide blade. ### Claim 10 (depends on 8) The supercharged internal combustion engine as claimed in claim 8, wherein the ring further comprises circular disks which are rotatably mounted in a flush manner in circular apertures of the ring; and wherein each disk serves to hold a guide blade of a first group and to hold a guide blade of a second group and is rotationally conjointly connected to said two guide blades. ### Claim 11 (depends on 10) The supercharged internal combustion engine as claimed in claim 10 comprising a common adjustment mechanism for both guide blade groups; and wherein the common adjustment mechanism comprises rotatable rods for the adjustment of the guide blades, wherein each rod extends through a disk and is rotationally conjointly connected to said disk. ### Claim 12 (depends on 1) The supercharged internal combustion engine as claimed in claim 1, wherein the internal combustion engine is an applied-ignition internal combustion engine. ### Claim 13 (depends on 1) The supercharged internal combustion engine as claimed in claim 1, wherein the two channels of the turbine can be connected to one another within the turbine housing by virtue of at least one opening in the wall upstream of the rotor being opened. ### Claim 14 A method for operating a supercharged engine including a twin flow turbine, comprising: adjusting a first group of adjustable guide blades provided at a rotor-side end of a first channel based on operating conditions; and adjusting a second group of adjustable guide blades provided at a rotor-side end of a second channel based on operating conditions. ### Claim 15 (depends on 14) The method as claimed in claim 14, wherein the adjustable guide blades are adjusted in a direction of a closed position if the exhaust-gas flow rate from the two cylinder groups falls below a first threshold exhaust-gas flow rate. ### Claim 16 (depends on 14) The method as claimed in claim 14, wherein the adjustable guide blades are adjusted in a direction of an open position if the exhaust-gas flow rate from the two cylinder groups exceeds a second threshold exhaust-gas flow rate. ### Claim 17 (depends on 14) The method as claimed in claim 14 further comprising adjusting the first group of adjustable guide blades and the second group of adjustable guide blades simultaneously and in the same direction. ### Claim 18 (depends on 14) The method as claimed in claim 14 further comprising adjusting the first group of adjustable guide blades and the second group of adjustable guide blades independently from each other.