COMPRESSION IGNITION DIRECT INJECTION INTERNAL COMBUSTION ENGINE AND FUEL INJECTION METHOD IN THE COMBUSTION CHAMBER OF THE ENGINE.

摘要

The present invention relates to a compression-ignition direct injection internal combustion engine comprising at least one cylinder (10), a cylinder head (12) carrying fuel injection means (14), a piston (16) sliding in this cylinder. cylinder, a combustion chamber (22) delimited on one side by the upper face (36) of the piston having a stud (42) erected in the direction of the cylinder head and disposed in the center of a concave bowl (38) delimiting at least two mixing zones (Z1, Z2). According to the invention, the engine comprises fuel injection means projecting fuel according to at least two layers of fuel jets (24, 26) of different lap angle (α, β) for injecting fuel into the fuel. one or the other or in both zones (Z1, Z2).