Method for operating an internal combustion engine, and internal combustion engine configured to carry out such a method

US12152545B2 · kind B2 · utility

Assignee

• Rolls-Royce Solutions, GmbH · DE

Inventors

• Aron Toth · Friedrichshafen, DE
• Tobias Frank · Friedrichshafen, DE

Key dates

• Filing date: Nov 21, 2023
• Grant date: Nov 26, 2024
• Expiry date: Nov 21, 2043

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: detecting a first signal from a knock sensor in a temporal measurement window for a first load point and for a first energization duration—assigned to a pre-injection—of an injector for an operating cycle; calculating a first first evaluation point from the first signal by a first metric; detecting a second signal from the knock sensor in the temporal measurement window for the first load point and for a second energization duration—assigned to the pre-injection—of the injector for the operating cycle; calculating by the first metric a second first evaluation point from the second signal; determining an optimum energization duration as an optimum of the first first evaluation point and the second first evaluation point; and storing and/or applying the optimum energization duration to the first load point and the first combustion chamber.