Exhaust gas turbocharger for a reciprocating internal combustion engine and corresponding reciprocating internal combustion engine

An exhaust gas turbocharger for a reciprocating internal combustion engine including a plurality of cylinders with a displacement volume VH and an inlet line (6), and with an exhaust line (4a, 4b), said exhaust gas turbocharger (2), having an exhaust gas turbine (3) with a turbine rotor (10) in the exhaust line (4) and a compressor (5) with a compressor wheel (21) in the inlet line (6), the exhaust gas turbine (3) having at least first and second exhaust gas inlet flow passages (7, 8), by way of which exhaust gas is to be fed to the turbine rotor (10), the ratio DT/DV of the turbine rotor diameter DT to the compressor wheel diameter DV being governed by the relationship

• DT/DV>JK*Asy,
• wherein
• J denotes a constant in the range between 1 and 1.05.
• K denotes a parameter which varies as function of the swept volume VH of the internal combustion engine (1), which is to be determined according to the relationship
• K
• =
• 0.15
• ⁢
• V
• H
• 14
• ≈
• 0.04
• ⁢
• V
• H
• as a function of the displacement volume VH measured in liters, and
• Asy denotes a turbine-specific degree of asymmetry, which is to be determined according to the relationship
• Asy=Φ1,S/Φ2,S
• as a function of the critical flow rate parameter Φ1,S in the area of the choke limit for the first exhaust gas flow passage (7) of the exhaust gas turbine (3) and the corresponding flow rate parameter Φ2,S for the second exhaust gas flow passage (8) of the exhaust gas turbine (3).