Method for cylinder synchronization of an internal combustion engine

US8272361B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Guido Porten · Wiernsheim, DE
• Jens Wolber · Gerlingen, DE
• Markus Amler · Rutesheim, DE
• Matthias Walz · Lambach, DE
• Jan-Mathias Meng · Ditzingen, DE
• Joerg Koenig · Stuttgart, DE
• Marc Schott · Heubach, DE
• Pierre-Yves Crepin · Stuttgart, DE

Key dates

• Filing date: May 5, 2008
• Grant date: Sep 25, 2012
• Expiry date: Dec 1, 2028

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/40
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The aim of the invention is to optimize the running smoothness of an internal combustion engine. To achieve this aim, the individual cylinders are synchronized with respect to their torque contribution. According to the method, fuel is injected into the combustion chamber of a cylinder in at least one injection step, the at least one injection contributing to the torque of the internal combustion engine. Fuel is injected into the combustion chamber of the cylinder in a torque neutral manner by way of a secondary injection during a working stroke of the cylinder and the amount of fuel of the secondary injection us calculated in such a manner that the exhaust gas substantially corresponds to a stoichiometric air/fuel mixture.