Abstract: The invention relates to a motor vehicle wiping unit (1) comprising: at least one motor (2) configured to drive at least one windscreen wiper (5, 6) in a to-and-fro movement over a motor vehicle glass surface (11), at least one reduction gear (3) arranged at the output of the motor (2), and a controller (4) configured to determine a command for the motor (C), characterized in that the controller (4) is configured to determine the command for the motor (C) by taking into account at least one variable parameter linked to the efficiency of the reduction gear (3) such as to counterbalance the variation in the efficiency of the reduction gear (3) by changing the electrical power to be provided to the motor (2). The present invention also relates to a method for commanding the rotational speed of a motor for driving at least one windscreen wiper in a to-and-fro movement over a motor vehicle glass surface.

Abstract: The subject of the present invention is a device (3) for protecting an optical sensor (13) of a driver-assistance system (1) for a motor vehicle, the optical sensor (13) comprising an optic (14), and the protecting device (3) including: an optical element (9) that is configured to be positioned upstream of the optic (14) of the optical sensor (13) and mounted so as to be movable about an axis of rotation (A1); and an actuator (5) that is configured to rotate the optical element (9), characterized in that the protecting device (3) further includes: at least one heating component (7) that is configured to heat the optical element (9) so as to defog or defrost this optical element (9); and an induction system (8) that is configured to supply power to the heating component (7).

Abstract: An electric circuit (5) for charging at least one electrical energy storage unit (4) by means of an electrical network, the circuit (5) comprising: an inductive cell (6) configured to interact with an inductive cell of the electrical network to exchange energy by electromagnetic induction, a rectifier (13) disposed downstream from the inductive cell (6) and whereof the positive output terminal (17) and the negative output terminal (20) are each connected to a conductor (18, 21) of a DC bus (19), a capacitor (22) mounted between the two conductors (18, 21) of the DC bus (19), a power stage (25) whereof the positive input terminal (26) and the negative input terminal (27) are respectively connected to one of the conductors (18, 21) of the DC bus (19), and which is configured to adapt the value of the DC voltage between the positive input terminal (26) thereof and the negative input terminal (27) thereof to the electrical energy storage unit (4), the power stage comprising, at most, two voltage converters, and t

Abstract: The invention relates to an electrical network (1) for a vehicle, comprising: a first circuit (2) comprising a first power source (7) and at least one first electronic component (8) powered by the first power source (7); and a second circuit (3) comprising a second power source (10) and at least one second electronic component (11) which can be activated and is powered by the second power source (10). The network (1) also comprises: a connecting member (5) between the first (2) and second (3) circuits, said connecting member (5) allowing, in a first configuration, an exchange of current of a first value between the first circuit (2) and the second circuit (3) and, in a second configuration, an exchange of current of a second value between the first circuit (2) and the second circuit (3), in which the second value is lower than the first value; and a control unit (17) which controls the configuration of the connecting member (5).

Abstract: The invention relates to a device for transmitting mechanical torque between a driving member and a driven member, in particular between a heat engine and an air compressor (2) for supplying power to the engine. Said transmission device includes at least one pulley (10, 11, 12, 13), for transmitting the torque between the driving member and the driven member, and a release means (17) controlling at least one of said pulleys (10, 11, 12, 13) so as to enable the transmission of the torque between the driving member and the driven member when the latter are in an engaged state, or so as to restrict the transmission when the latter are in a disengaged state.

Abstract: The invention relates to a device for heating the heat engine (7) of a vehicle, comprising: a reactor (3) in which a reagent that can cause an exothermic reaction with a reaction fluid is disposed, a circuit (5) for supplying reaction fluid to the reactor (3), a heat-exchange circuit (8) between the reactor (3) and the heat engine (7) of the vehicle, and a circuit (9) for regenerating the reagent.

Abstract: An electric circuit (5) for charging at least one electrical energy storage unit (4) by means of an electrical network, the circuit (5) comprising: an inductive cell (6) configured to interact with an inductive cell of the electrical network to exchange energy by electromagnetic induction, a rectifier (13) disposed downstream from the inductive cell (6) and whereof the positive output terminal (17) and the negative output terminal (20) are each connected to a conductor (18, 21) of a DC bus (19), a capacitor (22) mounted between the two conductors (18, 21) of the DC bus (19), a power stage (25) whereof the positive input terminal (26) and the negative input terminal (27) are respectively connected to one of the conductors (18, 21) of the DC bus (19), and which is configured to adapt the value of the DC voltage between the positive input terminal (26) thereof and the negative input terminal (27) thereof to the electrical energy storage unit (4), the power stage comprising, at most, two voltage converters, and t

Abstract: The invention relates to a device for heating the heat engine (7) of a vehicle, comprising: a reactor (3) in which a reagent that can cause an exothermic reaction with a reaction fluid is disposed, a circuit (5) for supplying reaction fluid to the reactor (3), a heat-exchange circuit (8) between the reactor (3) and the heat engine (7) of the vehicle, and a circuit (9) for regenerating the reagent.

Abstract: The invention relates to a heat exchanger (1) for a vehicle comprising a heat engine, said exchanger comprising a first circuit, a second circuit and a tank. According to the invention, the first circuit comprises first ducts for conveying exhaust gases, the second circuit comprises second ducts for conveying a heat-transfer fluid, and the tank can receive a reagent.

Abstract: The invention relates to an electrical network (1) for a vehicle, comprising: a first circuit (2) comprising a first power source (7) and at least one first electronic component (8) powered by the first power source (7); and a second circuit (3) comprising a second power source (10) and at least one second electronic component (11) which can be activated and is powered by the second power source (10). The network (1) also comprises: a connecting member (5) between the first (2) and second (3) circuits, said connecting member (5) allowing, in a first configuration, an exchange of current of a first value between the first circuit (2) and the second circuit (3) and, in a second configuration, an exchange of current of a second value between the first circuit (2) and the second circuit (3), in which the second value is lower than the first value; and a control unit (17) which controls the configuration of the connecting member (5).

Abstract: The invention relates to a device for transmitting mechanical torque between a driving member and a driven member, in particular between a heat engine and an air compressor (2) for supplying power to the engine. Said transmission device includes at least one pulley (10, 11, 12, 13), for transmitting the torque between the driving member and the driven member, and a release means (17) controlling at least one of said pulleys (10, 11, 12, 13) so as to enable the transmission of the torque between the driving member and the driven member when the latter are in an engaged state, or so as to restrict the transmission when the latter are in a disengaged state.

Abstract: The invention relates to a method for managing a hybrid compressor (10) for an air-conditioning circuit of a motor vehicle having a heat engine, said hybrid compressor being suitable for being driven, on the one hand, by said heat engine and, on the other hand, by an electric motor (20) during phases in which the drive of the compressor (10) by means of the heat engine is interrupted. According to the invention, during a phase in which the drive is interrupted, said method comprises starting said electric motor (20) before said drive interruption begins. The invention can be used for air-conditioning motor vehicles having a heat engine and provided with an automatic stopping and restarting system.

Abstract: The invention relates to a hybrid compressor (10) for an air-conditioning circuit of a motor vehicle having a heat engine, said hybrid compressor being suitable for being driven, on the one hand, by said heat engine and, on the other hand, by an electric motor (20) during phases in which the drive from the heat engine is interrupted. According to the invention, said hybrid compressor (10) consists of a compression chamber (101) with variable displacement, said displacement being variable in a (variation range having an upper displacement interval in which the compression chamber (101) is driven by the heat engine, and a lower displacement interval in which the compression chamber (101) is driven by the electric motor (20). The invention can be used for motor vehicles having a heat engine and provided with an automatic stopping and restarting system.

Abstract: The invention relates to a method for determining the power (Welec) of an electric motor (20) for driving a hybrid compressor (10; 10?) of an air-conditioning circuit of a motor vehicle having a heat engine during phases in which the drive of the hybrid compressor by the heat engine is interrupted. According to the invention, said method includes steps that consist of: defining a maximum temperature (Tmax) measured at a point (13) of said air-conditioning circuit; setting a reference duration (tref) for the phases during which the drive of the hybrid compressor (10; 10?) by the heat engine is interrupted; determining the power (Welec) of the electric motor (20) such that, at the end of said reference duration (tref), the temperature measured at said point (13) of the air-conditioning circuit is at most equal to said maximum temperature (Tmax). The invention can be used for air-conditioning motor vehicles having a heat engine and provided with an automatic stopping and restarting system.

Abstract: The invention relates to a heating, ventilating and/or air conditioning system with a main air conditioning loop (10) for a refrigerant including at least one compressor (11), a condenser (12), an expansion device (13) and an evaporator (14), a cold storage heat exchanger (21) suitable for storing cold during operation of the compressor (11), and a secondary air-conditioning loop (20a) comprising the cold storage heat exchanger (21). The secondary air-conditioning loop (20a) is suitable to cool the evaporator (14) when the compressor (11) is out of operation. The secondary air-conditioning loop (20a) includes a fluid circulation branch disposed in parallel with a main air conditioning loop (10) common section including at least the evaporator (14). The fluid circulation branch contains a cold production element (21) able to cool the refrigerant toward the evaporator. The invention is particularly dedicated to heating, ventilating and/or air conditioning systems in “Stop and Start” cars.

Abstract: The invention relates to the detection of parameters that are representative of a state associated with an automobile windscreen (1), by optical means. The inventive device comprises a module (20) that is sensitive to at least one of the aforementioned parameters and which is at least partially embedded in a layer (11) of the windscreen. Said windscreen comprises two glass panels (10a, 10b), which are separated by a spacer comprising the part of the module (20) that is embedded.