Method for operating an internal combustion engine, and a corresponding device

US6814054B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Jurgen Sauler · Stuttgart, DE
• Oskar Torno · Schwieberdingen, DE
• Axel Heinstein · Welzheim, DE
• Carsten Kluth · Stuttgart, DE
• Werner Haeming · Neudenau, DE

Key dates

• Filing date: Jul 17, 2002
• Grant date: Nov 9, 2004
• Expiry date: Jan 8, 2023

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 operating an internal combustion engine and a corresponding device are described in which a combustion of a fuel in a fuel-air mixture introduced into a cylinder occurs in at least one cylinder. At least one adjusting device is used to influence at least one physical process, which modifies the distribution of the constituents and/or the overall composition of the fuel-air mixture in the at least one cylinder. If knock occurs, a knock control is used to gradually retard an ignition angle in the at least one cylinder from a fundamental ignition angle by an adjustment angle. When the adjustment of the at least one adjusting device exceeds a specifiable first threshold and/or the change in the at least one physical process exceeds a specifiable second threshold, the adjustment angle is rapidly reduced by increments, the more rapid reduction occurring with a larger increment and/or with a higher frequency of increments.