Abstract: The invention relates to a system for controlling the operation of a diesel engine of a motor vehicle, associated with means for supplying the cylinders with fuel and with means for recirculating waste gases at the admission. The control system comprises means for controlling the supply means according to the rotation speed of the engine and an effective torque control point and means for controlling the recirculating means according to the at least one effective torque control point. The system comprises means for determining a torque control point which is reconstructed from information provided by means for acquisition of the richness of the waste gas of the engine and air supply at the admission thereof and means for adjusting the means for controlling the recirculating means according to the effective torque control point and the reconstructed torque control point in order to minimize the emission of pollutants by the engine.

Abstract: The invention concerns a hybrid drive chain of a vehicle (1) comprising a heat engine (2) connected to a mechanical assembly (4) including a gearbox (5) coupled with a differential (6) itself coupled with the driven wheels (7G, 7D) of the vehicle (1) by their respective axle shafts (8G, 8D), and at least one electrical machine (3) including a stator (10) and a rotor (11), cooperating with the heat engine (2) via the mechanical assembly to provide heat and/or hybrid traction to the driven wheels (7G, 7D). The invention is characterized in that the electrical machine (3) is arranged between the differential (6) and one of the driven wheels (7D), by surrounding the axle shaft (8D) connecting the driven wheel (7D) to the differential (6).

Abstract: The inventive system for controlling the regeneration of depollution means (1) which is integrated into the exhaust line (2) of a motor vehicle engine (3) and is associated with a common rail fuel supply means for carrying out the depollution means regeneration strategies (6) by using the fuel post-injections into the engine cylinders, wherein said system also comprises, for each regeneration, means (7) for calculating a total time spent in different regeneration strategies and means (8) for comparing said total time with a maximum threshold value (9) in order to stop the regeneration when said threshold is exceeded.

Abstract: The invention concerns a method for controlling the operation of a cylinder assembly according to which the following phases are carried out during the same operating cycle: an exhaust opening phase (L1); a first inlet opening phase (L2) during a compression phase of the piston, and; a second inlet opening phase (L3) subsequent to the first. The second inlet opening phase (L3) begins once the piston reaches a position located in the second third of the travel thereof, in an expansion phase, and the first phase (L1) is carried out entirely during the exhaust opening phase (L1). The invention also concerns an internal combustion engine that operates according to the aforementioned method, and to a motor vehicle equipped with this engine.

Abstract: The invention relates to a method for controlling the coupling and the decoupling of the first motor and of the second motor of a parallel hybrid motive power group comprising a first motor (11) driving an input shaft (12) at the entrance of a gear box (1), a second motor (11) and a coupling/decoupling means (14) of the second motor and of the first motor, maneuverable between an open position and a closed position, for enabling a change with regard to the gearbox when the motor group operates in hybrid mode, according to which the motive power group is controlled for decoupling the second motor and the first motor then changing the ratio of the gear box, and recoupling the second motor and the first motor.

Abstract: An element comprises a rotary input member (15), a motion output member (19), an electrical machine (14) including a stator (27) and a rotor (26), a first connecting clutch (89A) between the input member (15) and an intermediate member (83) rotating about a first axis (X-X?). The intermediate member (83) is connected in rotation to the rotor (26), and a second connecting clutch (89B) is positioned between the intermediate member (83) and the output member (19). The element also comprises a casing (21) defining a housing (69) wherein are coaxially and concentrically mounted the first and second connecting clutches (89A, 89B). The axis of rotation (Y-Y?) of the rotor (26) is separate from the first axis (X-X?) and a transmission (121, 123, 135) connects in rotation the rotor (26) and the intermediate member (83). The invention is applicable to motor vehicle engine-transmission units.

Abstract: The invention relates to a device for controlling the suspension of the body shell of a motor vehicle. According to the invention, the device comprises: a means (21) for calculating a set modal stress (F1) for the shock absorber as a function of at least one absolute modal body shell speed (Vmod), a means (34) for calculating a set modal stress (F2) for the shock absorber as a function of a relative modal body shell speed (Vmod2) in relation to the mid-plane of the wheels, a means (22) for detecting a bias on the vehicle, and a means (23) for calculating a weighting coefficient ? for calculating a set modal stress (F) for the shock absorber using formula F=(1??)·F1+?·F2.

Abstract: A method for monitoring a resistance welding process carried out on a stack of metal workpieces (1) clamped between two electrodes (2a, 2b) of a clamp (3), and a device therefor. According to the method, the electrodes (2a, 2b) are subjected to a clamping force (F) and a voltage (V(t)) enabling a current (I(t)) to flow through the stack of metal workpieces (1). The monitoring method further includes at least one step of analysing the clamping force (F) by comparison with a model from a prior learning process. The result of the analysis of each step is taken into account by a decision-making matrix to generate a correction and/or control signal intended for the welding process.

Abstract: A method of controlling the stopping and staffing of a heat engine (2) of a vehicle is such that (i) it is necessary for the vehicle to be in an engine stop request phase, and not in pre-defined operating conditions that oppose the stopping of the engine (2), in order for the engine (2) to be stopped or (ii) it is necessary for the vehicle to be in an engine staff request phase, and not in pre-defined operating conditions that oppose the staffing of the engine (2), in order for the engine to be started. For a given engine stop request phase, the engine (2) can only be stopped or staffed at most a pre-determined number of times.

Abstract: The invention concerns a system for determining inflating pressures of tires mounted on a motor vehicle wheels, which includes acquiring vertical accelerations of a front wheel and of a rear wheel of the vehicle and estimating coefficients of stiffness of the tires of these wheels based on the acquired accelerations on another of the acquired accelerations, these coefficients of stiffness being estimated based on the thus temporally reset accelerations.

Abstract: The invention relates to an actuating device that actuates engine valves, comprising magnetizing means, a spring having a fixed end connected to an adjustable stop and having a moving end connected to the valve (1). The adjustable stop comprises meshing means (26) that can interact with a control element (8, 10) whereby enabling the tare of the spring to be adjusted, and comprises an orifice (11) located between the adjustable stops of the two valves (1) of the same pair and serving to accommodate the control element (8, 10). The invention is characterized in that the control element (8, 10) comprises positioning means (12) that interact with complementary means (13) whereby making it possible to locate two stable positions respectively corresponding to the meshing positions with the two adjustable stops of the two valves (1) and to immobilize the control element (8, 10) in these positions.

Abstract: The invention relates to a retaining fork for holding an element such as an injector holder onto a support such as a cylinder head of a combustion engine. The fork (4) has two branches (26, 27) intended to bear against the element by surrounding a head (21) of this element comprising at least one flat (36) to prevent this element from rotating. A shank (23) intended to bear against the support, and a central opening (28) intended to accept a clamping screw (29) engaged in the support. The fork comprises an elastic element (42) with which one of its branches (27) is equipped and which defines two elastic supports (38, 39) interposed between an internal face (41) of this branch and the head (21) of the element so as to keep a flat (36) of this head bearing against an internal face (37) of the opposite branch (26).

Abstract: The invention relates to a vibratory warning device attachable to a structural element (2) such as a vehicle seat and including vibratory means (3,4,5) for generating mechanical vibration in response to a control signal, and attachment means (7,8,9) for securing the vibratory means (3,4,5) to a portion (6) of the structural element (2), characterized in that the attachment means comprise a resilient element (8) defining a gap (11) with an opening into which said portion (6) of the structural element (2) can be inserted in order to attach the device by clamping the resilient element (8) against said portion (6) of the structural element. The invention further relates to a seat provided with said device.

Abstract: System in which the depollution device is associated with an oxidation catalyst, and the engine is associated with a common rail for feeding it with fuel and adapted to implement a regeneration strategy using at least one post-injection of fuel into the cylinders. In the system, a request for regeneration (req.RG) can be detected, whether the engine is in a stage of idling can be detected, a temperature downstream from the catalyst can be acquired, a maximum duration for post-injection application during the stage of idling can be determined on the basis of said temperature, and the post-injection can be progressively reduced as soon as the duration of use has reached the maximum duration.

Abstract: The invention relates to a control device (D) which is intended to control the temperature of first and second fluids formed by the lubricating oil of the heat engine (12) of the vehicle and the recirculated exhaust gases respectively. The inventive device (D) comprises a first heat transfer liquid/lubricating oil exchanger (14) and a second heat-transfer liquid/recirculated exhaust gases exchanger (16), said first and second exchangers being connected to the same heat transfer liquid circuit (10). Preferably, the heat-transfer liquid circuit (10) is connected to a heat source or a heat sink (18) comprising, for example, heat storage means (18) which can exchange heat with the heat-transfer liquid.

Abstract: The invention concerns a system for assisting regeneration of pollution management means (1) integrated in an exhaust line (3) of a diesel engine (4), wherein the engine (4) is associated with common ramp means (7) injecting fuel into the cylinders thereof, based on at least one post-injection and adapted to implement, in isocouple, through modification of the engine operation control parameters, at least two strategies called level 1 and level 2 and a second regeneration strategy including level 1 strategies and a sequence alternating level 2 and over-calibrated level 2 strategies, enabling different thermal levels to be achieved in the exhaust line. The invention is characterized in that it comprises means (8) for analyzing the vehicle running conditions and means (8) for comparing same to threshold values, to implement the first regeneration strategy for running conditions higher than the threshold values or the second regeneration strategy for running conditions lower than the threshold values.

Abstract: The invention relates to a vehicle comprising a device for controlling negative torque comprises: a central control unit (46); an internal combustion engine (4); a device (16) for braking the wheels; an input (48) for a resistive torque; at least one element with negative torque (generator (24), alternator (26), air conditioning compressor (28), lighting (30)); and at least one device for regulating the or each element. The central control unit comprises means for controlling the or each regulating device in order to meet the resistive torque demand.

Abstract: A system in which the depollution means (1) are associated with oxidation catalyst-forming means (2), and the engine (4) is associated with common manifold means (7) for feeding it with fuel, and adapted to implement a regeneration strategy in at least one operation of post-injecting fuel into the cylinders, is characterized in that is comprises: detector means (8) for detecting a regeneration request (req.RG); detector means (9) for detecting a state of the foot being raised on the vehicle accelerator; temperature acquisition means (11) for acquiring the temperature downstream from the catalyst-forming means (2); means (8) for determining a maximum quantity of fuel to be injected in the post-injection operations during the period of returning to idling following the foot being raised, and on the basis of said temperature; and means (7, 8) for immediately interrupting the post-injection operation as soon as the quantity of fuel injecting has reached the maximum quantity.

Abstract: This system in which the engine implements regeneration strategies at a first level and at a second level depending on different engine operation control parameters in order to obtain different temperature levels in the exhaust line involves acquiring the exothermic temperature level of the catalyst, comparing it with a threshold value so that in the event of the threshold being exceeded while the second level strategy is being applied, the system is controlled to regulate one of the engine operation control parameters in order to reduce the exothermic temperature level, and if this temperature level does not drop back below the threshold value at the end of a first time period, the system is controlled to switch over to the first level strategy, and if this exothermic temperature level still does not drop below the threshold value at the end of a second time period, to stop the regeneration strategy.

Abstract: The invention concerns a system for assisting regeneration of pollution management means (1) integrated in an exhaust line (3) of a diesel engine (4), wherein the engine (4) is associated with common ramp means (7, 8) injecting fuel into the cylinders thereof, based on at least one post-injection and adapted to implement, in isocouple, through modification of engine operation control parameters, at least two regeneration strategies called level 1 and level 2 strategies and a second regeneration strategy including level 1 strategies and a sequence alternating the level 2 and over-calibrated level 2 strategies, enabling different thermal levels to be achieved in the exhaust line.