Exhaust gas turbocharger for IC motor, has a spiral inflow channel into the turbine housing with a gas flow deflector at the inner channel wall to reduce mechanical and thermal stress

摘要

The exhaust gas turbocharger, for an internal combustion engine, has turbine (8) and compressor wheels within housings, linked together by a shaft. The turbine housing (2) has a spiral inflow channel (22) for the exhaust gas, with a gas flow deflector (28) as a ramp projection at the inner wall (24) of the channel to reduce the channel cross section. The ramp is followed by a tongue (30) towards the wall, which enlarges the cross section. The projection is formed by a thickening of the turbine housing wall, integrated into the inflow channel directly in front of the neck cross section (QH).