Abstract: A combustion process with auto-ignition for direct-injection internal combustion engines involves dividing injection jets at a jet divider contour into a first partial quantity, a second partial quantity, and third partial quantities. The first partial quantity enters into the piston cavity, the second partial quantity enters via the piston step into a region between the piston crown and the cylinder head, and the third partial quantities, starting from the respective injection jet, spread out on both sides in the peripheral direction in opposite directions along the piston step, and the respective third partial quantities collide with one another between two adjacent injection jets within the piston step and are deflected radially inwardly.

Abstract: A combustion process with auto-ignition for direct-injection internal combustion engines involves dividing injection jets at a jet divider contour into a first partial quantity, a second partial quantity, and third partial quantities. The first partial quantity enters into the piston cavity, the second partial quantity enters via the piston step into a region between the piston crown and the cylinder head, and the third partial quantities, starting from the respective injection jet, spread out on both sides in the peripheral direction in opposite directions along the piston step, and the respective third partial quantities collide with one another between two adjacent injection jets within the piston step and are deflected radially inwardly.