Method for operating an internal combustion engine

US11852096B2 · kind B2 · utility

Assignee

• MAN Truck & Bus SE · DE

Inventors

• Thomas Malischewski · Heilsbronn, DE
• Bruno Barciela Díaz-Blanco · Munich, DE

Key dates

• Filing date: Sep 4, 2020
• Grant date: Dec 26, 2023
• Expiry date: Sep 4, 2040

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/30
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The present disclosure relates to a method for operating a combustion engine. A main amount of gas fuel is fed via a pre-chamber into a main combustion chamber. An ignition quantity of gas fuel is fed into the pre-chamber before the piston reaches the upper dead center to form an air-gas fuel mixture in the pre-chamber, which is fatter than in the main combustion chamber. The air-gas fuel mixture in the pre-chamber ignites itself. The air-gas fuel mixture in the main combustion chamber ignites through the self-ignited air-gas fuel mixture in the pre-chamber.