Method for adjusting adaptive programme maps of an adaptive knock control in an internal combustion engine and a method for adjusting the knock control in said engine

US6745749B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Stefan Unland · Schwieberdingen, DE
• Axel Heinstein · Welzheim, DE
• Michael Gundlach · Hersbruck, DE
• Werner Haeming · Neudenau, DE
• Martin Ludwig · Wuppertal, DE

Key dates

• Filing date: May 30, 2003
• Grant date: Jun 8, 2004
• Expiry date: May 30, 2023

Classification

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

Abstract

Proposed is a method for adjusting an adaptive characteristics map of an adaptive engine-knock control system and a method for adaptively controlling engine knock, the adaptive characteristics map being defined by at least one operating parameter, the adaptive characteristics map for each operating-parameter range being made up of a precontrol component that characterizes the ambient conditions, and a residual component that results from the engine-knock control, the value of the adaptive characteristics map for each operating-parameter range being given by the sum of the precontrol component corresponding to the specific operating-parameter range, and the residual component corresponding to the specific operating-parameter range. In this context, the adjustment of the adaptive characteristics map is carried out by initially determining if ambient conditions have changed, and by subsequently ascertaining a new precontrol component as a function of the changed ambient conditions for each operating-parameter range, if the ambient conditions have changed, or by holding the precontrol component constant for each operating-parameter range, if the ambient conditions have not changed.