Method and device for operating an internal combustion engine

US8239120B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Georg Mallebrein · Stuttgart, DE
• Laurent Nack · Stuttgart, DE
• Oliver Pechan · Gerlingen, DE
• Pierre-Yves Crepin · Stuttgart, DE

Key dates

• Filing date: May 5, 2009
• Grant date: Aug 7, 2012
• Expiry date: May 24, 2031

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2200/1002
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method and a device for operating an internal combustion engine to perform a lambda regulation without using a lambda sensor. Fuel is injected for combustion in a combustion chamber of the internal combustion engine. A first quantity of the internal combustion engine is ascertained, which allows a conclusion to be drawn about the behavior of an output quantity of the internal combustion engine, in particular of a torque.