Internal combustion engine with a double-flow radial turbine of an exhaust gas turbocharger and grouped cylinders and method for operating such an internal combustion engine

摘要

Internal combustion engine with min, to a cylinder head with minutes two cylinders, in the case of the– each cylinder minutes has an outlet opening with subsequent exhaust gas line,– minutes in the manner of two cylinders are configured that it comprises two groups having in each case min, to a cylinder,– the exhaust gas pipes of the cylinders of each cylinder group in each case to a total exhaust gas line combining,– the two total exhaust gas lines to a double-flow radial turbine (1) of an exhaust gas turbocharger, are connected in the manner that, in each case, a total exhaust gas line with one of the two flues (5, 6) of the radial turbine (1) is connected, whereby the two flues (5, 6), in continuation of the total exhaust gas lines – up to the at least one impeller (3) by means of a housing wall (2a) are separated from each other and thus also the exhaust gas disposal systems of the cylinder groups, and– the double-flow radial turbine (1) is a twin-flow turbine (11),wherein– each impeller section comprises (7) of the impeller (3) with a partition wall (10) is provided, which the respective impeller section comprises (7) into two barrel blade channels (8, 9), namely an adjacent - bit for the rotatable shaft (4) barrel arranged blade channel (8) and a radially further from the axis of rotation (4) spaced barrel blade channel (9), and each partition wall (10) in the case of a rotating impeller (3) and at least temporarily, at least in sections, the continuation of the two flooding (5, 6) are separated from one another housing wall (2a) is formed, and the two running blade channels (8, 9) in this way, the continuations of the two flues (5, 6) form,– a segmented min. in this case, the exhaust gas aftertreatment system is provided, the two channel-shaped which are separated from one another in segments, wherein the adjacent to the rotatable shaft (4) barrel arranged blade channels (8) with a first segment and the radially further from the axis of rotation (4) spaced barrel blade channels (9) are connected with a second segment.