Loading patent…
AssigneeInstitut Francais du Petrole
InventorsBertrand Gatellier, Bruno Walter
Estimating the term…
A direct-injection internal-combustion engine comprising at least one cylinder (1) with a cylinder head (2), a piston (5) sliding in the at least one cylinder, a gas intake and exhaust (3, 4), a combustion chamber defined on one side by the upper face (SP) of the piston (5), the face comprising a projection (7) pointing towards cylinder head (2) and arranged at the center of a concave bowl (8). According to the invention, engine comprises at least one injection nozzle (6) for injecting fuel with a nappe angle (a1) less than or equal to 2 Arctg2FCD, where CD is the diameter of cylinder (2) and F the distance between the point of origin of the fuel jets from injection nozzle (6) and the position of the piston corresponding to a crankshaft angle of 50° in relation to the top dead center (TDC).
A direct-injection internal-combustion engine comprising at least one cylinder with a cylinder head, a piston sliding in the at least one cylinder, a gas intake and exhaust, a combustion chamber defined on one side by an upper face of said piston comprising a projection pointing towards the cylinder head and arranged at a center of a concave bowl, and comprising at least one injection nozzle for injecting fuel with a nappe angle (a1) less than or equal to 2Arctg2FCD, where CD is the diameter of cylinder and F a distance between the point of origin of fuel jets from the at least one injection nozzle and a position of the piston corresponding to a crankshaft angle of 50 in relation to the top dead center.
A process for improving the latitude of operation of a direct-injection internal-combustion engine comprising at least one cylinder, a piston sliding in this cylinder, a gas intake and exhaust, a combustion chamber defined on one side by an upper face of the piston comprising a projection pointing towards cylinder head, at a center of a bowl, wherein fuel is injected into each cylinder through an injection nozzle having a nappe angle (a1) less than or equal to 2Arctg2FCD, where CD is the diameter of cylinder and F the distance between a point of origin of fuel jets from injection nozzle and a position of the piston corresponding to a crankshaft angle of 50° in relation to top dead center.
A process for improving a range of operation of a direct-injection internal-combustion engine comprising at least one cylinder, a piston sliding in this cylinder, a gas intake and exhaust, a combustion chamber defined on one side by an upper face of piston comprising a projection pointing towards a cylinder head, at a center of a bowl, comprising:
Dependencies are inferred from the claim text.