EXHAUST-GAS TURBO CHARGER FOR AN INTERNAL COMBUSTION ENGINE

摘要

The invention relates to an exhaust-gas turbo charger for an internal combustion engine. The aim of the invention is to further develop an exhaust-gas turbo charger which is economical to build and which has improved functions. The invention is characterised in that the exhaust-gas turbo charger for an internal combustion engine comprises a turbine wheel which is arranged in the exhaust-gas flow of the motor, said turbine wheel being made of a heat-resistant light metal alloy, a compressor wheel which is arranged in the intake air flow of the motor, a shaft which is made of steel. The compressor wheel is arranged on the shaft and the turbine wheel is welded to the shaft. Said exhaust-gas turbo charger also comprises a bearing for the shaft which is embodied on the turbine wheel (1) of a hub (4) which is adapted to the diameter of the shaft (5). The connection point (3) is arranged between the hub (4) of the turbine wheel (1) and the shaft (2) in the surrounding area of the bearing (6, 7, 14, 15).