Systems and methods for a supercharged internal combustion engine with exhaust gas recirculation

A system, comprising:

• an engine coupled to an intake system for receiving charge air and an exhaust system for discharging exhaust gases;
• a compound boosting system including an electrically driven compressor and a turbocharger compressor driven by an exhaust turbine, the turbocharger compressor positioned downstream of the electrically driven compressor in the intake system;
• a throttle arranged at an inlet of the electrically driven compressor;
• an exhaust gas recirculation (EGR) system that couples the exhaust system downstream of the exhaust turbine to the intake system upstream of the electrically driven compressor via a first recirculation branch and between the electrically driven compressor and the turbocharger compressor via a second recirculation branch;
• and
• a controller storing executable instructions in non-transitory memory that, when executed, cause the controller to:
• activate the electrically driven compressor and provide recirculated exhaust gas via the second recirculation branch in response to expected condensate formation at an inlet of the turbocharger compressor;
• activate the electrically driven compressor and provide recirculated exhaust gas via the first recirculation branch in response to a tip-in event;
• and
• deactivate the electrically driven compressor and provide recirculated exhaust gas via one or both of the first recirculation branch and the second recirculation branch in response to no expected condensate formation at the inlet of the turbocharger compressor and an absence of the tip-in event.