Patent ID: 7874276

Claim:
An internal-combustion engine, notably of direct injection type, comprising at least a cylinder, a piston sliding in this cylinder, a combustion chamber delimited on one side by the upper face of said piston comprising a teat arranged in the centre of a concave bowl and a fuel injection nozzle, characterized in that it comprises an injection nozzle having a nappe angle (a 1 ) less than or equal to 2 ⁢ Arc ⁢ tg ⁢ CD 2 ⁢ F , where CD is the diameter of cylinder and F the distance between the point of origin of the fuel jets from the injection nozzle and the position of the piston corresponding to a crank angle of 50° to the top dead centre (TDC), and control and computing means for injecting, at very high engine loads, a first amount of fuel for a position of piston ranging between 35° and 70° before the top dead centre of this piston, followed by injection of at least a second amount of fuel, the first amount of fuel being smaller than the second.