| 主权项 |
1. A charged internal combustion engine, comprising:
at least one cylinder head with at least two cylinders; at least one exhaust-gas turbocharger with at least one turbine; each cylinder has at least one outlet opening for discharging the exhaust gases out of the cylinder, and each outlet opening is adjoined by an exhaust line; at least two cylinders are configured in such a way as to form at least two groups with in each case at least one cylinder; the exhaust lines of the cylinders of each cylinder group merge to form a respective overall exhaust line, thus forming an exhaust manifold; the at least two overall exhaust lines are connected to a multi-channel segmented turbine, which comprises at least one rotor mounted on a rotatable shaft in a turbine housing and the at least two channels of which—as viewed in a section perpendicular to the shaft of the rotor—are arranged one on top of the other at least along an arc-shaped section and enclose the at least one rotor in spiral form at different radii and are open toward the at least one rotor in each case along a circular-arc-shaped segment, in such a way that in each case one overall exhaust line is connected to one of the at least two channels of the turbine; in each case two adjacent channels are separated from one another, at least in sections and in a continuation of the overall exhaust lines in the turbine housing, by means of a housing wall, wherein, at the rotor side, the at least one housing wall that separates two adjacent channels has a free tongue-like end and ends with a spacing to the at least one rotor, such that a tongue spacing is formed; the multi-channel segmented turbine is the turbine of the at least one exhaust-gas turbocharger; andwherein
a movable annular support is provided which has at least one tongue-like element and which is displaceable in translational fashion along the rotatable shaft for the purpose of varying the tongue spacing, wherein, when the support is in a first working position, the at least one tongue-like element lengthens the free tongue-like end of a housing wall that separates two adjacent channels, such that the tongue spacing is reduced, and when the support is in a rest position, the at least one tongue-like element is positioned laterally adjacent to the at least one rotor. |
