Abstract: A headlight for a motor vehicle comprises a light source, a mirror and a transparent optical deflection element placed in front of the mirror, the mirror being capable of cooperating with the light source in order to generate a beam delimited by an upper cut-off line, and the deflection element being capable of providing a generally horizontal spread of the light, without substantially modifying the vertical distribution of the light. This headlight is noteworthy in that the said deflection element has light input and output faces which are continuous over their entire span. It thus presents an appearance similar to that of a headlight of the elliptical type with a lens.

Abstract: The present invention relates to a method for controlling an internal combustion engine having a means (16) for directly injecting fuel as well as a means (22) for admitting at least one fluid into the combustion chamber, a cylinder (12), a burned-gas exhaust means (28), and a processing and control unit (48) receiving information on at least the driver's torque demand and the engine speed (Ne), comprising a) determining the desired torque (Torque_des) corresponding in particular to driver demand; b) from this desired torque, determining a desired Indicated Mean Effective Pressure (IMEP_des) from which the parameters (Mair_sp, BGR_sp) are established to control admission of at least one fluid into the combustion chamber; and c) determining a specified value of the IMEP (IMEP_sp) from the desired IMEP and at least one magnitude linked to the fluid admitted into the combustion chamber, to define the fuel injection parameters (Mfuel_i, SOI_i, Pfuel) in the combustion chamber.

Abstract: The present invention relates to a method for controlling an internal combustion engine having a means (16) for directly injecting fuel as well as a means (22) for admitting at least one fluid into the combustion chamber, a cylinder (12), a burned-gas exhaust means (28), and a processing and control unit (48) receiving information on at least the driver's torque demand and the engine speed (Ne), comprising a) determining the desired torque (Torque_des) corresponding in particular to driver demand; b) from this desired torque, determining a desired Indicated Meon Effective Pressure (IMEP_des) from which the parameters (Mair_sp, BGR_sp) are established to control admission of at least one fluid into the combustion chamber; and c) determining a specified value of the IMEP (IMEP_sp) from the desired IMEP and at least one magnitude linked to the fluid admitted into the combustion chamber, to define the fuel injection parameters (Mfuel_i, SOI_i, Pfuel) in the combustion chamber.

Abstract: The present invention relates to a dipped headlight for a motor vehicle, comprising a light source cooperating with a mirror in order to form an illuminating beam with a V-shaped cut-off, the mirror comprising four regions arranged side by side, a first region giving the beam its width, a second region giving the beam its range under the horizontal part of the cut-off, a third region giving the beam its range under the inclined part of the cut-off, and a fourth part giving the beam its range along the longitudinal axis of the vehicle. According to the invention, each region is joined to the adjacent region without a step, the first region of the mirror has a reflecting surface which strongly spreads the light in the lateral direction, and the second and third regions are located on the same side of the light source.

Abstract: The present invention relates to a dipped headlight for a motor vehicle, comprising a light source (10) cooperating with a mirror (30) in order to form an illuminating beam with a V-shaped cut-off, the mirror comprising four regions (32, 31, 33, 34) arranged side by side, a first region (32) giving the beam its width, a second region (31) giving the beam its range under the horizontal part of the cut-off, a third region (33) giving the beam its range under the inclined part of the cut-off, and a fourth part (34) giving the beam its range along the longitudinal axis of the vehicle.

Abstract: A headlight for a motor vehicle comprises a light source, a mirror and a transparent optical deflection element placed in front of the mirror, the mirror being capable of cooperating with the light source in order to generate a beam delimited by an upper cut-off line, and the deflection element being capable of providing a generally horizontal spread of the light, without substantially modifying the vertical distribution of the light.

Abstract: A vehicle headlamp comprises a reflector and a horizontal light source oriented transversely to an optical axis of the reflector. The headlamp is arranged to give an American passing beam, i.e. a cut-off beam which is delimited by two half planes at different heights. The reflector is divided into sectors. The orientation of one of these sectors is obtained geometrically by rotating the sector about a horizontal axis transverse to the optical axis, from a position in which the sector is continuous with adjacent sectors, into a position in which that sector will generate images situated at the limit of the higher of the two half planes delimiting the cut-off line.

Abstract: This rolling-contact bearing is of the type comprising an internal screw, an external nut and, therebetween, in proper engagement with said screw and nut, a plurality of threaded planet rollers held at the proper relative angular spacing by means of their trunnions engaging bores provided to this end in end rings, said rollers comprise a cylindrical central plain portion having a diameter at the most equal to the root diameter of the threads of said rollers, said plain cylindrical portion is connected through rounded fillets to the adjacent threads of the rollers. This assembly, in the case of a simple nut, affords a higher degree of rigidity with a lesser degree of losses of movement.