Angasturbolader für eine Brennkraftmaschine mit variabler Turbinengeometrie

摘要

An exhaust gas turbocharger (1) for an internal combustion engine comprises an exhaust gas turbine and a compressor (3) which is connected to said turbine (2) by a shaft (4). The turbine (2) is configured in the form of a radial turbine (2) with a radial supply channel (5) and a radial flow entry cross-section (6) to the turbine wheel (9). A variable turbine geometry (7) is provided, enabling the cross-sectional adjustment of the radial flow entry cross-section (6). The variable turbine geometry (7) is supported between two support walls (11, 14) that are fixed to the housing. One of said support walls (14) projects into the supply channel (5) in such a way that the rear side of this support wall (14) that faces away from the variable turbine geometry (7) is at a distance from the inner wall (12) of the supply channel (5) and the exhaust gas located in the supply channel (5) can flow against said rear side.