Exhaust turbocharger with two-stage axial exhaust turbine - has duct section, adjacent to first turbine stage, as part of axially displaceable ring slider

摘要

The exhaust turbocharger has two stages of axial turbine blading radially adjacent for each other on a common runner. The stages work in counterflow, using a diversion duct between the first stage outlet and second stage inlet, and a device to charge the first stage only, or both in sequence. A duct section (15), adjoining the first stage (13), is part of an axially adjusting ring slider (18) to connect the two stages (13,14) in the first slide setting, while in its second setting it links the first stage (13) outlet via the duct to the exhaust (25). ADVANTAGE - Simple switching of the turbine stages.