Patent ID: 8522548
Filing Date: 2013-09-03
Classification: F01N,F02B,F02F,Y02T

Abstract:
1. A supercharged internal combustion engine comprising: at least one cylinder head with at least four cylinders, each of which has at least one outlet opening which is adjoined by an exhaust line for discharging exhaust gases out of the cylinder, the at least four cylinders being configured in such a way as to form two groups, each group with at least two cylinders, the exhaust lines of only the cylinders of a first cylinder group merging to form a first overall exhaust line, the exhaust lines of the first cylinder group and the first overall exhaust line forming a first exhaust manifold, the exhaust lines of only the cylinders of a second cylinder group merging to form a second overall exhaust line, the exhaust lines of the second cylinder group and the second overall exhaust line forming a second exhaust manifold, the first exhaust manifold having a different-sized exhaust gas volume than the second exhaust manifold; and at least one twin-flow turbine which has an inlet region with a first and a second inlet ducts, wherein the first overall exhaust line opens out into the first inlet duct and the second overall exhaust line opens out into the second inlet duct, wherein the inlet ducts of the twin-flow turbine are of different sizes, with different-sized cross sections and/or different-sized exhaust-gas volumes, and wherein the overall exhaust line of the exhaust manifold with a smaller exhaust-gas volume is connected to a larger inlet duct, and the overall exhaust line of the exhaust manifold with a larger exhaust-gas volume is connected to a smaller inlet duct.