Gas inlet device with intersection of the inlet duct and the valve calibration inclined with respect to the fire face
AssigneeIfp Energies Nouvelles
InventorsXavier Gautrot, Julien Trost, Martin Ritter, Christophe Lechard
Life of this patent
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Abstract
The present invention relates to a gas intake device (1) for a cylinder of an internal-combustion engine. Gas intake device (1) comprises an intake pipe (2), an intake valve (3), a calibration part (4) for intake valve (3), 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 (7) between intake pipe (2) and calibration part (4) occurs in a line nonparallel to the plane of fire face (FF).
Claims13
A gas intake device for a cylinder of an internal-combustion engine, the cylinder having an axis (CC), the gas intake device comprising an intake pipe, at least one intake valve arranged within the intake pipe, at least one calibration part for the intake valve arranged at one end of the intake pipe and directed at fire face (FF) of the cylinder, and means for diverting the gas so as to generate an aerodynamic motion of the gas within the cylinder about an axis substantially perpendicular to the axis (CC) of the cylinder, characterized in that, a flow cross-section of the intake pipe has a substantially rectangular shape, with rounded corners, and in that, at the intrados of the intake pipe, intersection between the intake pipe and the calibration part of the intake valve is on a generatrix (YY) forming an angle α ranging between 5° and 45° with respect to a plane (F′F′) parallel to the fire face (FF) of the cylinder passing through a point of intersection between the intake pipe and the calibration part in order to twist the end of the intake pipe.
Dependencies are inferred from the claim text.