Exhaust-gas-turbocharged applied-ignition internal combustion engine having at least two turbines, and method for operating an internal combustion engine of said type

US9874161B2 · kind B2 · utility

Assignee

• Ford Global Technologies, LLC · US

Inventors

• Franz Arnd Sommerhoff · Aachen, DE
• Frank Kraemer · Neunkirchen, DE
• Franz J. Brinkmann · Hürth, DE
• Helmut Matthias Kindl · Aachen, DE
• Vanco Smiljanovski · Bedburg, DE
• Joerg Kemmerling · Monschau, DE
• Werner Willems · Aachen, DE
• Carsten Weber · Aalen, DE

Key dates

• Filing date: Apr 21, 2015
• Grant date: Jan 23, 2018
• Expiry date: Sep 16, 2035

Classification

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

Abstract

A method for operating a boosted internal combustion engine is provided. The engine includes a first cylinder in a first cylinder group and a second cylinder in a second cylinder group, each of the first and second cylinders having two activatable outlet openings adjoined by an exhaust line, one of the outlet openings of each of the first and second cylinders coupled to a first turbocharger including a first turbine and one of the outlet openings of each of the cylinders coupled to a second turbocharger including a second turbine, the method comprising: if engine load is less than a threshold load value implementing a first operating mode that includes deactivating the second cylinder, deactivating one of the activatable outlet openings in the first cylinder, and activating one of the activatable outlet opening in the first cylinder.