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.

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.

Abstract: Systems and methods for operating a twin flow supercharged engine are provided. The exhaust lines of engine cylinders are grouped into separate manifolds connected to respective inlet ducts of the twin-flow turbine. The inlet ducts of the twin-flow turbine are of different sizes, with different-sized cross sections and/or different-sized exhaust-gas volumes. The exhaust line of a manifold with a smaller exhaust-gas volume is connected to the larger inlet duct, and the exhaust line of a manifold with the larger exhaust-gas volume is connected to the smaller inlet duct.

Abstract: Systems and methods for operating a twin flow supercharged engine are provided. The exhaust lines of engine cylinders are grouped into separate manifolds connected to respective inlet ducts of the twin-flow turbine. The inlet ducts of the twin-flow turbine are of different sizes, with different-sized cross sections and/or different-sized exhaust-gas volumes. The exhaust line of a manifold with a smaller exhaust-gas volume is connected to the larger inlet duct, and the exhaust line of a manifold with the larger exhaust-gas volume is connected to the smaller inlet duct.

Abstract: The invention relates to a supercharged internal combustion engine having at least two cylinder groups of at least one cylinder each, both cylinder groups being equipped with an exhaust pipe, and the two exhaust pipes being in communication with one another, and having two exhaust gas turbochargers, the turbines of which are connected in parallel, with their compressors connected in series, and having an exhaust gas recirculation line which upstream of one of the two turbines branches off from the exhaust pipe assigned to this turbine and opens out into the common intake line. An advantage of this invention is that it provides a supercharged internal combustion engine which overcomes the drawbacks which are known from the prior art and can be used to realize high exhaust gas recirculation rates and high boost pressures, in particular simultaneously, in all the load ranges of the internal combustion engine.

Abstract: The invention relates to a pressure charged internal combustion engine (1) having at least two cylinders (3), configured to form two groups (3?, 3?) each with a separate exhaust line (4?, 4?), and two exhaust-gas turbochargers connected in parallel (6, 7), a first turbine (6a) being arranged in the exhaust line (4?) of the first group (3?) and a second turbine (7a)) being arranged in the exhaust line (4?) of the second group (3 ?) and the compressors (6b, 7b) coupled to these turbines (6a, 7a) arranged in separate intake lines (2?, 2?), which converge to form an intake manifold (2) to supply the internal combustion engine (1) with fresh air. The invention relates to a method of influencing the quantity of exhaust gas recirculated by a pressure charged internal combustion engine (1). The pressure charged internal combustion engine is capable of achieving high exhaust gas recirculation rates and high boost pressures simultaneously.

Abstract: The invention relates to a system and method for improving the emission characteristics of a pressure-charged internal combustion engine. The engine (1) has an intake line (2) and an exhaust-gas line (4) and at least two exhaust-gas turbochargers (6, 7) connected in series. Each turbocharger has a turbine (6a, 7a) in the exhaust-gas line (4) and a compressor (6b, 7b) in the intake line (2). The first exhaust-gas turbocharger (6) serves as high-pressure stage (6). The second exhaust-gas turbocharger (7) serves as low-pressure stage (7). Two exhaust-gas aftertreatment systems are located in between and after the turbines.

Abstract: The invention relates to a method of operating a supercharged internal combustion engine with which high exhaust-gas recirculation rates and high charge pressures within all the load ranges, in particular within the part-load range, can be realized at the same time.

Abstract: The invention relates to a supercharged internal combustion engine having at least two cylinder groups of at least one cylinder each, both cylinder groups being equipped with an exhaust pipe, and the two exhaust pipes being in communication with one another, and having two exhaust gas turbochargers, the turbines of which are connected in parallel, with their compressors connected in series, and having an exhaust gas recirculation line which upstream of one of the two turbines branches off from the exhaust pipe assigned to this turbine and opens out into the common intake line. An advantage of this invention is that it provides a supercharged internal combustion engine which overcomes the drawbacks which are known from the prior art and can be used to realize high exhaust gas recirculation rates and high boost pressures, in particular simultaneously, in all the load ranges of the internal combustion engine.

Abstract: The invention relates to a radial compressor having a suction-side opening and a pressure side. A swirl generator is placed upstream of the radial compressor. The swirl generator, has an inlet portion which is angularly configured relative to the outlet opening, the outlet opening facing the suction-side opening of the swirl generator. The swirl generator further has adjustable baffle plates arranged concentrically around the outlet opening.