Knock control process for an internal combustion engine

US5771862A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Stefan Unland · Schwieberdingen, DE
• Oskar Torno · Schwieberdingen, DE
• Werner Haeming · Neudenau, DE
• Iwan Surjadi · Leinfelden, DE
• Robert Sloboda · Yokohama, JP
• Michael Baeuerle · Rutesheim, DE

Key dates

• Filing date: May 2, 1997
• Grant date: Jun 30, 1998
• Expiry date: May 2, 2017

Classification

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

Abstract

A process for adaptive knock control for an internal combustion engine serves to retard the firing angle of an internal combustion engine when knocking occurs and then to advance the firing angle again. At the same time, the operation of the internal combustion engine is subdivided into various operating ranges; on leaving an operating range, a value is always saved as a retardation of the firing angle determined during operation in this range, and when starting up again in this range with load dynamics and/or speed dynamics also occurring at the same time, this saved value is output as the starting value for operation in this new operating range.