Flap arrangement for a turbine of an exhaust-gas turbocharger

US11236666B2 · kind B2 · utility

Assignee

• BorgWarner Inc. · US

Inventors

• Marcel Golz · Neckarsteinach, DE
• Jason Robert Walkingshaw · Heidelberg, DE
• Jens Watanpour · Viernheim, DE
• Anna C. Gilbert · Mannheim, DE

Key dates

• Filing date: Dec 3, 2019
• Grant date: Feb 1, 2022
• Expiry date: Apr 5, 2040

Classification

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

Abstract

The invention concerns a flap arrangement 10 for a turbine 2 of an exhaust-gas turbocharger 2, in particular for a wastegate valve of the turbine, having a spindle 100 for rotatable mounting of the flap arrangement 10 in a turbine housing 3, a lever arm 200, the lever arm 200 being coupled to the spindle 100, and a flap plate 300, the flap plate 300 being coupled to the lever arm 200. The flap plate 300 has a flexible part 330 in a radially outer region of the flap plate 300, such that by applying a closing force to the flap arrangement 10 when the flap plate 300 is in contact with a flap seat 500 in the turbine housing 3, elastic and/or plastic deformation of the flexible part 330 of the flap plate 300 can be caused to compensate for thermal deformation of the turbine housing 3, exhaust deposits and/or wear.