Method for determining the advance ignition angle internal combustion engines ignition systems

US6161523A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

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

Key dates

• Filing date: Aug 20, 1999
• Grant date: Dec 19, 2000
• Expiry date: Aug 20, 2019

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 determining the ignition point in ignition systems for internal combustion engines, having integrated knock control, a basic ignition point being determined on the basis of measured operating parameters using a stored characteristic map. The knock control, after engine knock has occurred, determines a knock control ignition point, which is more retarded than the basic ignition point, the knock control ignition point, in response to knock-free combustions, being altered step-by-step so as to be more advanced. Furthermore, a torque interface is integrated, which on the basis of the operating parameters and/or the demands placed by the driver, determines a torque-optimized ignition point, and the knock control ignition point being the most advanced permissible ignition point which is issued by the control unit.