Exhaust-gas turbocharger with acoustically active imperfections

US9683485B2 · kind B2 · utility

Assignee

• BorgWarner Inc. · US

Inventors

• Udo Dellmann · Lohnsfeld, DE
• Ivo Nawrath · Mainz, DE
• Stefan Ebert · Kindenheim, DE

Key dates

• Filing date: May 27, 2015
• Grant date: Jun 20, 2017
• Expiry date: Nov 4, 2035

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 (1) having a turbine housing (2), which has a bypass duct (10) with a bypass opening (9); and having a control flap (3), which is mounted pivotably between a closed position and an open position in the turbine housing (2), the control flap (3), when in its closed position, resting on a bearing region (8) of a housing wall (11) which conducts exhaust gas and contains the bypass opening (9), wherein at least one flow imperfection (12A, 12B; 23A, 23B) is arranged in the turbine housing wall (11) in the bearing region (8) of the control flap (3) and/or in the control flap (3).