Exhaust-gas turbocharger for an internal combustion engine

US7047739B2 · kind B2 · utility

Assignee

• DamilerChrysler AG · DE

Inventors

• Peter Fledersbacher · Stuttgart, DE
• Siegfried Sumser · Stuttgart, DE
• Helmut Finger · Echterdingen, DE
• Wolfgang Erdmann · Buxtehude, DE

Key dates

• Filing date: Sep 21, 2004
• Grant date: May 23, 2006
• Expiry date: Sep 21, 2024

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An exhaust-gas turbocharger in an internal combustion engine having a compressor in the induction tract and an exhaust-gas turbine in the exhaust-gas line wherein the exhaust-gas turbine has at least two spiral ducts which in each case open into a radial flow inlet passage. Arranged in the radial flow inlet passage is a guide cascade ring which is disposed between two axially delimiting walls. One of the walls is designed to be axially displaceable and adapted to accommodate the vanes of the guide cascade ring. The wall is displaceable axially outward to such an extent that the vanes of the radial guide cascade ring are no longer in contact with the wall and there is a direct, unobstructed flow path to an outflow duct in the exhaust-gas turbine.