Abstract: An internal combustion engine operating with self-ignition which is equipped with a main combustion space including a piston recess and with an auxiliary chamber arranged in the cylinder head an injection nozzle is coordinated to the auxiliary chamber while the chamber includes an insert forming an overflow channel provided with several discharge holes terminating in the main combustion space. The discharge holes are matched as regards their direction and cross section to the main combustion space-air volume component to be seized or impinged upon by the respective jet passing through the corresponding discharge hole. The discharge holes are thereby proportional in cross section to the main combustion space-air volume component located in front thereof when the piston is in a position corresponding to the center point of the full-load heat-release curve and are directed toward the center of gravity of the respective main combustion space-air volume component.

Abstract: An air-compressing injection internal combustion engine with a main combustion space arranged in the piston and with an auxiliary chamber equipped with an injection nozzle and with a glow plug, which is in continuous communication with the main combustion space by way of a channel-shaped constriction. The pressure chamber of the auxiliary chamber is thereby disposed eccentrically in relation to the injection nozzle and the constriction while the injection nozzle injects with a first jet into the constriction and with a second jet in the direction or into the area near the glow plug which is located in the eccentrically offset part of the pressure chamber.