| 摘要 |
<p>A turbine 1b for a turbocharger or power turbine comprises a turbine housing 5b, having an inlet for receiving exhaust gas from an engine, an outlet, a turbine chamber, and a turbine wheel 4b within the turbine chamber 20a for rotation about an axis. The inlet comprises first and second separate flow passages 22a, 24a which meet to define a substantially annular inlet passageway. The double flow turbine is configured to define first and second separate flow passages which meet to define a substantially annular inlet passageway, the passages forming unequal angles about the turbine wheel axis; or may be configured such that the mass flow of exhaust gases from each portion 28a, 30a of the inlet passageway towards the turbine wheel is unequal to each other. An additional aspect is also disclosed where each separate flow passage directs gas flow onto a separate portion of an array of adjustable vanes, where the first portion of the vanes has a different configuration to the second portion. The apparatus is beneficial where an EGR system is fitted so as to control the pressure differential across the EGR system.</p> |
