US 11,885,256 B2
Method for operating an internal combustion engine
Bruno Barciela Díaz-Blanco, Munich (DE); Thomas Malischewski, Heilsbronn (DE); Steffen Hirschmann, Neustadt an der Aisch (DE); Dominic Hyna, Fürth (DE); and Daniel Zülow, Munich (DE)
Assigned to MAN TRUCK & BUS SE, Munich (DE)
Appl. No. 17/602,707
Filed by MAN Truck & Bus SE, Munich (DE)
PCT Filed Mar. 16, 2020, PCT No. PCT/EP2020/057105
§ 371(c)(1), (2) Date Apr. 15, 2022,
PCT Pub. No. WO2020/207712, PCT Pub. Date Oct. 15, 2020.
Claims priority of application No. 10 2019 109 603.0 (DE), filed on Apr. 11, 2019.
Prior Publication US 2022/0307412 A1, Sep. 29, 2022
Int. Cl. F02B 43/00 (2006.01); F02B 43/12 (2006.01); F02B 19/00 (2006.01); F02D 19/02 (2006.01); F02M 21/02 (2006.01)
CPC F02B 43/12 (2013.01) [F02B 19/00 (2013.01); F02D 19/024 (2013.01); F02M 21/0209 (2013.01); F02M 21/0254 (2013.01); F02B 2019/006 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for operating an internal combustion engine, comprising:
compressing supplied air in a main combustion chamber and a prechamber of the internal combustion engine by moving a piston in the main combustion chamber to a top dead center position of a piston movement of the piston;
feeding a pilot quantity of gas fuel into the prechamber before the piston reaches the top dead center position;
autoignition of the pilot quantity of gas fuel in the prechamber;
feeding a main quantity of gas fuel into the prechamber after the autoignition; and
ignition of the main quantity of gas fuel by the conditions in the prechamber that are brought about by the autoignited pilot quantity.