Method and device for operating an internal combustion engine

US7124717B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Hermann Gaessler · Leinfelden, DE
• Udo Diehl · Stuttgart, DE
• Karsten Mischker · Leonberg, DE
• Rainer Walter · Pleidelsheim, DE
• Andreas Blumenstock · Ludwigsburg, DE
• Bernd Rosenau · Asperg, DE
• Juergen Schiemann · Markgröningen, DE
• Christian Grosse · Kornwestheim, DE
• Georg Mallebrein · Stuttgart, DE
• Volker Beuche · Stuttgart, DE
• Stefan Reimer · Markgröningen, DE

Key dates

• Filing date: Dec 4, 2001
• Grant date: Oct 24, 2006
• Expiry date: Dec 4, 2021

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 and a device for operating an internal combustion engine having a plurality of cylinders are described, each cylinder having at least one intake valve and one exhaust valve having fully variable valve control, a fuel feed to at least one first cylinder of the plurality of cylinders being deactivated, a first quantity of fresh air being drawn in by opening the at least one intake valve of the at least one first cylinder in a first downward movement of the piston of the at least one first cylinder, and a second quantity of fresh air being ejected by opening the at least one exhaust valve with a first upward movement of the piston of the at least one first cylinder.