Turbocharger for an internal combustion engine, and turbine housing

A turbocharger for a combustion machine, comprising:

• a bearing housing, in which a rotor shaft is mounted so as to be rotatable about a rotor axis of rotation;
• and
• an exhaust-gas turbine with a turbine wheel which is arranged rotationally conjointly on the rotor shaft and which has an impeller blade arrangement with multiple turbine blades, and with a turbine housing which is mechanically fixed to the bearing housing and which surrounds the turbine wheel;
• wherein, with respect to a meridional view, the exhaust-gas turbine
• at least one turbine blade of the turbine wheel has a flow inlet edge and a flow outlet edge for exhaust-gas mass flow,
• the flow inlet edge has a maximum inlet radius Rin and the flow outlet edge has a maximum outlet radius Rout, in each case with respect to the rotor axis of rotation;
• the at least one turbine blade has an outer contour which faces toward the turbine housing and which extends from the flow inlet edge to the flow outlet edge and which has an axial extent length LaxTip;
• the turbine housing has a housing contour which is situated opposite the outer contour;
• the outer contour of the at least one turbine blade has an axial length segment Lcover of the axial extent length LaxTip in which the at least one turbine blade is axially covered by the turbine housing;
• and
• a smallest radial distance Tipclr with respect to the rotor axis of rotation is formed between the housing contour and the outer contour;
• and wherein the turbine housing and the turbine wheel are configured relative to one another such that the following condition is satisfied:
• L
• cover
• L
• axTip
• >
• 1
• -
• Tip
• cir
• R
• in
• ×
• 3
• 
• 
• π
• 4
• ×
• 1
• (
• 1
• -
• R
• out
• R
• in
• )
• .