Abstract:
The invention relates to a multi-part tunnel for a central underbody portion and to a method for manufacturing such a central underbody portion. The invention also relates to a method for manufacturing a central underbody portion (10) of the structural body of a motor vehicle, intended for defining the bottom of a passenger compartment of the vehicle, including a longitudinal structural tunnel (11) comprising the assembly of: a floor (12) of the central underbody portion (10); an integral central profile section (13) added to the floor (12), arranged in a longitudinal direction (X) of the vehicle and having a length (L) that is dependent on the length (D) of the central underbody portion (10) in the longitudinal direction (X); and at least one end part (14, 15) forming an extension of the central profile section (13) and configured such as to have an interface (141, 151) providing coupling and a function of taking up and transmitting loads with a structural portion (100, 200) of the body that is separate from the central underbody portion (10) and/or with said floor (12). According to the invention, the method includes a step of adapting the length (L) of the central profile section (13) in accordance with the length (D) of the central underbody portion (10) in the longitudinal direction (X) of the vehicle.
Abstract:
System and method for charging a traction battery limiting the current draw of parasitic capacitances. The invention relates to a method for charging a traction battery of a vehicle connected to an electrical power supply network (RES), comprising: a control step (E1) for charging parasitic capacitances of a charger of the vehicle without transferring energy to the battery; a step of connecting (E2) a capacitance (Cf) between a phase of the network and the ground of the charger, when a time frame higher than, or equal to, a predetermined time frame expires; and a step (E3) of transferring energy between the network and the battery (Batt), following the step (E2) of the connection of the capacitance (Cf).
Abstract:
Disclosed is a stiffening panel (12) for a motor vehicle door (10), in particular a motor vehicle side door. Said stiffening panel is arranged between a structure (100) of the door (10), said structure (100) being made especially of plastic, being located on the side of the passenger compartment of the vehicle and being designed to absorb the majority of the external impacts on the door (10), in particular front and side impacts on the side door, and at least one decorative outer panel (11) which is made especially of plastic and is mounted on the structure (100). The stiffening panel (12) is made from a plastic material and is designed to stiffen the decorative outer panel (11) so as to enable the outer panel (11) to withstand external impacts on the door (10) from the opposite side of the passenger compartment. The stiffening panel (12) comprises mounting elements for a window lift system. The stiffening panel (12) is arranged between the decorative outer panel (11) and a window (13) that is supported by the window lift system mounted on the stiffening panel (12)..
Abstract:
The invention relates to a device for mounting an actuating pedal (2) in a vehicle, comprising a pedal support (3) in which the pedal (2) is mounted by means of an axis of rotation (5). The main feature of a mounting device according to the invention is that said support (3) has at least one rotatable lever (11) placed near a safety stop (4) of the vehicle, the lever (11) being able to pivot under the effect of its impact against the stop (4) during a frontal impact of said vehicle, before striking the support (3), then cracking it to free the axis (5) from the pedal (2).
Abstract:
System for charging the battery (6) of an automotive vehicle furnished with at least one electric or hybrid traction chain comprising an electric machine (2) connected mechanically to the driving wheels and connected electrically on the one hand to an electrical supply network (1) and on the other hand to the battery (6) by way of an inverter (5). The charging system comprises, when the vehicle is on charge, the electric machine (2) and the inverter (5) of the traction chain as well as a control system able to control the inverter (5) so that the energy is tapped off from the electrical supply network (1) through the electric machine (2) and to the battery (6), while controlling the electric machine (2) in such a way that it does not produce any wheel torque.
Abstract:
Method of controlling charge of a battery (13), in particular of a battery of a motor vehicle, on the basis of a monophase network, in which: - the input voltage (Ve) is filtered; - the electrical power of the network is conveyed to the battery via a voltage step-down stage (3) and a voltage step-up stage (4) which are coupled together via an inductive component (Ld); and - an intensity (Id) of current passing through said inductive component is controlled as a function of an intensity setpoint (Idref), said intensity (Id) not being continuously controllable. According to this method, the intensity setpoint is formulated in such a way that said intensity setpoint has at least a first value and at least a second value greater than the first value, the intensity setpoint having the second value before the start of a phase in the course of which the intensity is not controllable.
Abstract:
The invention relates to a battery of accumulators (1), comprising a plurality of power storage cells (11, 12, 21, 22, 31, 32) and an electrical network (5) which connects said cells to one another. According to the invention, said cells are grouped together in composite cells (10, 20, 30) comprising two identical branches each consisting of a least one cell and said composite cells being connected in series to one another, the electrical network comprises: a means (52) for parallel or connection in series of the cells of each composite cell, and a means (57) for controlling said connection means, which are suitable for connecting the cells of each composite cell in parallel or in series in order to adapt the output voltage of the battery of accumulators to the desired value and in order to balance the charging states of the cells.
Abstract:
The invention relates to a method for treating exhaust gases of a supercharged internal combustion engine (1) of a motor vehicle, said gases being partially recirculated at high pressure and low pressure to the intake, said method including: a step of recirculating a HP EGR gas flow (QEGR HP) to the engine (1); a step of recirculating a LP EGR gas flow (QEGR BP) to the engine (1); and determining the proportion (alpha) of LP EGR gas according to the actual efficiency (epsilon) of the treatment device (3).
Abstract:
The present invention relates to the moving linkage (1) of a variable compression ratio internal combustion engine comprising a crankshaft (60) provided with at least two webs (62A, 62B) the internal lateral faces of which are connected to one another by a crank pin (61) on which a joint (30) is mounted such that it can pivot, said joint comprising an opening (36) in which there is positioned a big end journal (21) which is axially stopped at each of its ends (21A, 21B) by a bearing portion (64A, 64B) of said interior lateral faces. According to the invention, each bearing portion forms a circular projection (64A, 64B) on one of the internal lateral faces of the webs and is designed to bear against just part of one of the ends of the big end journal.
Abstract:
A braking matching method for a vehicle equipped with a regenerative braking means and with an additional braking means that have different response times, involving generating a braking setpoint that is matched (see opposite CF) to said braking means, by the temporal filtering of a braking setpoint (Ce) intended for one of said braking means.