Method for controlling an engine braking device of an internal combustion engine and internal combustion engine for a motor vehicle

US8312720B2 · kind B2 · utility

Assignee

• Daimler AG · DE

Inventors

• Stephan Krätschmer · Trochtelfingen, DE
• Wolfram Schmid · Eislingen/Fils, DE
• Wolfgang Sladek · Esslingen am Neckar, DE
• Siegfried Sumser · Stuttgart, DE

Key dates

• Filing date: Jun 11, 2010
• Grant date: Nov 20, 2012
• Expiry date: Jul 6, 2031

Classification

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

Abstract

In an internal combustion engine comprising an exhaust gas turbocharger, which includes a compressor with a compressor wheel arranged in an inlet tract of the internal combustion engine and a turbine with a turbine wheel coupled rotationally to the compressor wheel and arranged in an at least two-path exhaust gas tract of which is connected to an exhaust gas guide section of the turbine including at least a first spiral channel coupled to the first exhaust path and a second spiral channel coupled to a second exhaust gas path, two guide vane elements are arranged upstream of the turbine wheel and downstream of respective spiral channels which are formed corresponding to a first degree of asymmetry A1 determined as a quotient Θ of a first mass flow parameter and a second mass flow parameter which is between 0.4 and 0.8.