Method for operating an internal combustion engine
AssigneeMan Truck & Bus AG
InventorsThomas Malischewski, Bruno Barciela Díaz-Blanco
Life of this patent
Estimating the term…
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.
Claims20
A method for operating an internal combustion engine, comprising:
- supplying a main quantity of gas fuel into a main combustion chamber of the internal combustion engine via a prechamber, wherein the main combustion chamber is in fluid communication with the prechamber;
- compressing and mixing air and the main quantity of gas fuel to form an air/gas fuel admixture during a movement of a piston in the main combustion chamber to a top dead center of a piston movement of the piston;
- supplying an ignition quantity of gas fuel into the prechamber, before the piston reaches the top dead center, in order to form in the prechamber an air/gas admixture which is richer than the main combustion chamber;
- self-igniting the air/gas fuel admixture in the prechamber;
- and
- igniting the air/gas fuel admixture in the main combustion chamber by the self-ignited air/gas fuel admixture in the prechamber.
An internal combustion engine, comprising:
- a main combustion chamber;
- a prechamber in fluid communication with the main combustion chamber;
- and
- a piston operably disposed within a portion of the main combustion chamber,
- wherein a main quantity of gas fuel is supplied to the main combustion chamber via the prechamber,
- wherein movement of the piston in the main combustion chamber to a top dead center of piston movement compresses and mixes air and the main quantity of fuel to form an air/gas fuel admixture,
- wherein the air/gas fuel admixture is self-ignited in the prechamber to effectuate a corresponding ignition of the air/gas fuel admixture in the main combustion chamber.
A motor vehicle, comprising:
- an internal combustion engine, the internal combustion engine including:
- a main combustion chamber;
- a prechamber in fluid communication with the main combustion chamber;
- and
- a piston operably disposed within a portion of the main combustion chamber,
- wherein a main quantity of gas fuel is supplied to the main combustion chamber via the prechamber,
- wherein movement of the piston in the main combustion chamber to a top dead center of piston movement compresses and mixes air and the main quantity of fuel to form an air/gas fuel admixture,
- wherein the air/gas fuel admixture is self-ignited in the prechamber to effectuate a corresponding ignition of the air/gas fuel admixture in the main combustion chamber.
Dependencies are inferred from the claim text.