Ford Global Technolgoies, LLC

Tim Franken

Andreas Kuske

Joerg Kemmerling

Vanco Smiljanovski

Helmut Matthias Kindl

Franz Arnd Sommerhoff

Werner Willems

Michael Forsting

Claudia Conee

Franz J Brinkmann

Claudia Katharina Herudek

A supercharged internal combustion engine includes at least two exhaust-gas turbochargers arranged in series, wherein a first exhaust-gas turbocharger serves as a low-pressure stage and a second exhaust-gas turbocharger serves as a high-pressure stage. A second turbine of the second exhaust-gas turbocharger may be present upstream of a first turbine of the first exhaust-gas turbocharger, and a second compressor of the second exhaust-gas turbocharger may be arranged in an intake system downstream of a first compressor of the first exhaust-gas turbocharger and a first bypass line may branch off upstream of the second turbine and join back at a junction point between the first turbine and the second turbine.

Two-stage supercharging internal combustion engine having an exhaust-gas aftertreatment arrangement, and method for operating a two-stage supercharged internal combustion engine

Embodiments of an internal combustion engine are provided. In one example, an engine includes at least one cylinder, an intake system for supplying charge air to the at least one cylinder, an exhaust-gas discharge system for discharging exhaust gas from the at least one cylinder, a first exhaust-gas turbocharger including a first turbine arranged in the exhaust-gas discharge system and a first compressor arranged in the intake system; and an exhaust-gas recirculation (EGR) system. The EGR system includes a line which branches off from the exhaust-gas discharge system and opens into the intake system, a second exhaust-gas turbocharger comprising an EGR turbine arranged in the line on a shaft and an EGR compressor arranged in the line on the shaft upstream of said EGR turbine, and an EGR cooler positioned between the EGR turbine and the EGR compressor.

Auto-ignition internal combustion engine with exhaust-gas turbocharging and exhaust-gas recirculation

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Aachen, Germany

Tim Franken