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DIRECT INJECTION INTERNAL COMBUSTION ENGINE HAVING A DOUBLE ANGLE OF FLOOR FOR CARRYING A CARBIDE MIXTURE IN A COMBUSTION COMBUSTION CHAMBER WITH A LOW COMBUSTION RATE AND A LOW COMPRESSION RATE AND METHOD FOR USING THE SAME.
DIRECT INJECTION INTERNAL COMBUSTION ENGINE HAVING A DOUBLE ANGLE OF FLOOR FOR CARRYING A CARBIDE MIXTURE IN A COMBUSTION COMBUSTION CHAMBER WITH A LOW COMBUSTION RATE AND A LOW COMPRESSION RATE AND METHOD FOR USING THE SAME.
The present invention relates to a compression-ignition direct-injection internal-combustion engine with a compression ratio ranging between 13.5 and 16.5 including a combustion chamber limited on one side by upper face (44) of a piston (16) comprising a projection (48) arranged in the center of a concave bowl (46) with at least two mixing zones (Z1, Z2), a fuel injection comprising at least one injector (30) projecting fuel in at least two fuel jet sheets (36, 38) with different sheet angles (A1, A2). The fuel injector comprises two rows of injection orifices (33a, 33b) arranged one above the other with the number of orifices of each row (Ninf, Nsup) is greater than or equal to −4·Ns+14 and less than or equal to −4·Ns+16 for the lower sheet or −4·Ns+18 for the upper sheet. Ns is the swirl number of this engine with a swirl number less than 1.5.
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