Fresh gas supply device for an internal combustion engine

An internal combustion engine, comprising:

• an exhaust gas turbocharger;
• at least one compressed air container;
• at least one high-pressure compressor;
• and
• a fresh gas supply device comprising:
• a charge air inlet for admitting compressed charge air from the exhaust gas turbocharger;
• an outlet connected to the charge air inlet, the connection being closable via at least one backflow flap swivelable about a flap axis of rotation;
• a compressed air inlet for admitting compressed air to the outlet;
• an adjusting device for adjusting the at least one backflow flap;
• at least one additional turbocharging device comprising a compressed air turbine and a compressor coupled thereto,
• wherein the compressed air turbine is arranged upstream of the compressed air inlet in the flow direction of the compressed air, wherein compressed air is flowable through the compressed air turbine, and
• wherein the compressor is configured to aspirate and compress additional charge air from the charge air inlet and to convey compressed additional charge air into the outlet.