Ignition control method

US6446601B1 · kind B1 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Steffen Franke · Schwieberdingen, DE
• Oskar Torno · Schwieberdingen, DE
• Carsten Kluth · Stuttgart, DE
• Werner Haeming · Neudenau, DE
• Iwan Surjadi · Leinfelden, DE
• Michael Baeuerle · Rutesheim, DE

Key dates

• Filing date: Feb 16, 2001
• Grant date: Sep 10, 2002
• Expiry date: Feb 16, 2021

Classification

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

Abstract

A method for ignition control is described in which the load gradient is determined. The load gradient is compared with a first specifiable dynamic threshold and the ignition control variable is additively retarded by application of an adaptable dynamic derivative action if the load gradient exceeds the first dynamic threshold. If the load gradient exceeds a second specifiable dynamic threshold and no knock occurs, then the output dynamic derivative action is reduced so that the ignition is advanced again.