Ifp Energies Nouvelles

Xavier Gautrot

Julien Trost

Martin Ritter

Olivier Laget

Christophe Lechard

Didier Ambrazas

Sebastien Charmasson

Arnaud Krieger

Paul-Georgian Luca

Pierre Viot

Sébastien Charmasson

The present invention relates to a gas intake device () for a cylinder of an internal-combustion engine. The gas intake device comprises two intake pipes (), two intake valves (), two intake valve calibration parts () and, in each intake pipe (), means for forming an aerodynamic gas motion of tumble type in the cylinder. Furthermore, for each intake pipe (), the intersection between intake pipe () and calibration part () occurs along a line non-parallel to the plane of the fire face. Besides, the inclination angle of this intersection is different for each pipe ().

Gas intake device having two asymmetrical intake ducts

The present invention relates to a gas inlet device () for a cylinder of an internal combustion engine. The gas inlet device () comprises an inlet port (), an inlet valve (), a calibration () of the inlet valve (), means for forming a tumble-type aerodynamic movement of the gas in the cylinder, and a mask (). Furthermore, the intersection () between the inlet port () and the calibration () is along a straight line not parallel to the plane of the firing face (FF). In addition, the mask () is oriented in the same way as the end of the inlet port ().

Gas intake device comprising an oriented masking element

The present invention relates to a gas intake pipe () for a cylinder of a thermal engine. The pipe comprises means for diverting the gas so as to generate a tumble type aerodynamic motion of the gas within the cylinder. The diversion means comprise at least a 'ramp' shape () on the lower profile () of the pipe and a concave zone on the upper profile () of intake pipe ().

Gas inlet duct generating an aerodynamic movement of gas within a cylinder

The present invention relates to a gas intake device () for a cylinder of an internal-combustion engine. Gas intake device () comprises an intake pipe (), an intake valve (), a calibration part () for intake valve (), and means for generating an aerodynamic motion of the gas in the cylinder about an axis substantially perpendicular to the axis of said cylinder. Furthermore, intersection () between intake pipe () and calibration part () occurs in a line nonparallel to the plane of fire face (FF).

Gas inlet device with intersection of the inlet duct and the valve calibration inclined with respect to the fire face

The present invention relates to an internal-combustion engine comprising a combustion chamber provided with a single intake valve (), a single exhaust valve (), two plugs () and a fuel injector (). Furthermore, the combustion chamber comprises means for forming an aerodynamic swirling motion structure of the intake gas in the combustion chamber. Besides, fuel injector () 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.

Internal-combustion engine with direct fuel injection in the direction of the intake gas motion

The present invention relates to a combustion chamber of a combustion engine. The combustion chamber comprises a single intake valve (), a single exhaust valve (), a fuel injector () and two plugs (). According to the invention, the combustion chamber is substantially elliptical () and the components of the combustion chamber are arranged as follows:

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Rueil-Malmaison, France

Xavier Gautrot