Internal-combustion engine with direct fuel injection in the direction of the intake gas motion
AssigneeIfp Energies Nouvelles
InventorsDidier Ambrazas, Xavier Gautrot, Olivier Laget, Julien Trost
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Abstract
The present invention relates to an internal-combustion engine comprising a combustion chamber provided with a single intake valve (2), a single exhaust valve (3), two plugs (4a, 4b) and a fuel injector (5). Furthermore, the combustion chamber comprises means for forming an aerodynamic swirling motion structure of the intake gas in the combustion chamber. Besides, fuel injector (5) is oriented so as to inject the fuel into the central area of the combustion chamber in the direction of the aerodynamic swirling motion structure.
Claims17
An internal-combustion engine comprising at least one cylinder in which a piston moves, the at least one cylinder being associated with a combustion chamber provided with a single intake valve, a single exhaust valve, a fuel injector and two plugs, wherein the combustion chamber comprises a structure for forming an aerodynamic motion structure of an intake gas with turbulences within the combustion chamber, the fuel injector is oriented so as to inject fuel into a central area of the combustion chamber between the two plugs, in a direction of the aerodynamic motion structure of the intake gas, the structure for forming an aerodynamic motion structure of the intake gas comprises a substantially elliptical shape of the combustion chamber, the intake and exhaust valves are arranged at the ends of a major axis of the substantially elliptical shape, the plugs are arranged close to a minor axis of the substantially elliptical shape, and the fuel injector is inclined with respect to a direction of an axis of the at least one cylinder at an angle ranging between 6° and 10°.
Dependencies are inferred from the claim text.