Exhaust-gas turbocharger with divided, variable guide vanes

US5372485A · kind A · utility

Assignee

• Mercedes-Benz Group AG · DE

Inventors

• Siegfried Sumser · Stuttgart, DE
• Erwin Schmidt · Baltmannsweiler, DE
• Wolfgang Erdmann · Buxtehude, DE
• Gerhard Frankle · Winnenden, DE

Key dates

• Filing date: Nov 12, 1993
• Grant date: Dec 13, 1994
• Expiry date: Nov 12, 2013

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02C6/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

An exhaust-gas turbocharger for an internal-combustion engine, the exhaust-gas turbine of which comprises a rotor with an at leash partially diagonal throughflow direction and a spiral guide channel surrounding this and having a mouth region in the form of an angular nozzle, and a variable guide blade cascade with guide blades being arranged in the mouth region. In order to design guide blade cascades with a simpler construction than that of known versions, at the same time with an increase in their operational reliability, according to the invention the guide blades are divided in such a way that they form a divided guide blade cascade with a stationary guide-blade cascade part and with a guide-blade cascade part assigned to this and rotatable concentrically relative to the axis of rotation of the rotor.