Renault S.a.s.

Ampere S.a.s.

Marco Marsilia

Samuel Cregut

Lionel Cordesses

Claire Oberti

Richard Pothin

Francois Foussard

Yann Chazal

Islam Ait-Hammouda

Marcos Navarro

Xavier Claeys

Cedric Chantrel

Thanh Nguyen

Pierre Nicolas

Manoela Ferreira De Araujo

Alexandre Martinez

François Foussard

Christophe Gautherot

Cédric Chantrel

Gérald Leminoux

A method temporarily extends the autonomy of an electric vehicle including a traction battery having a nominal usable energy capacity that is less than its maximum actual energy capacity. The method includes an additional usable capacity release step so as to temporarily increase the autonomy of the vehicle.

Method for temporarily extending the autonomy of an electric vehicle

In order to control the disengagement limit position of a movable dog relative to a fixed dog of a motor vehicle transmission, the following steps are implemented: acquiring position values of the movable dog; detecting an abutment position of the movable dog against the fixed dog for a predefined period; and calculating the limit position from the position value of the movable dog in abutment against the fixed dog.

Method for controlling a disengagement limit position of a movable dog for a motor vehicle transmission and corresponding transmission for a motor vehicle

A system for monitoring torque supplied by a motor of a motor vehicle, for example an electric or hybrid vehicle. The system includes a mechanism determining a driver's request for torque, a mechanism estimating torque produced by a propulsion unit, a mechanism filtering the driver torque request which is connected at an input to a mechanism determining consistency between the torque request and the torque produced including a mechanism determining consistency of positive torque and a mechanism determining consistency of negative torque each including a mechanism determining phases of quasi-static variation of the request and a mechanism detecting torque anomalies which can construct an acceptable torque template and determine that a torque anomaly has occurred as a function of the torque estimate, the torque request, and the acceptable torque template.

System and method for monitoring the torque supplied by the motor of an electric or hybrid motor vehicle

A cooling device for a motor vehicle, including a cooling circuit configured to cool an engine assembly using a liquid coolant circulated by at least one variable delivery pump, the delivery output by each pump being controlled by a control system. The control system is configured to regulate the delivery of each pump so that the temperature of the liquid coolant does not exceed a fixed datum temperature.

Motor vehicle cooling device

A method for monitoring torque produced by a motor vehicle engine, or an electric engine, including: comparing an estimated or measured value of torque produced by the engine with a low limit value or high limit value to detect excessive braking or acceleration and/or a lack of braking or acceleration; calculating the low limit value or high limit value, the calculating including: subtracting or adding a static error value to a torque value requested by a driver of the vehicle to obtain a low or high intermediate signal; and applying, to the intermediate signal, a delay corresponding to a response time of the engine to a torque increase request or to a torque decrease request expressed by the driver of the vehicle.

System and method for monitoring the torque of a motor vehicle engine

A system for controlling a voltage inverter, or supplying power to a multiphase electric motor of an automobile vehicle, including: a mechanism generating values of power supply voltages for each phase of the electric motor, together with an amplitude value of the power supply voltages; a phase-splicing determination mechanism; and a controller controlling the phase splicing cooperating to control transmission to the voltage inverter of duty cycles generated by determining the duty cycles, as a function of values of power supply voltages for each phase of the electric motor, and also of the amplitude value of the power supply voltages.

System for controlling a voltage inverter supplying power to a multiphase electrical motor of a motor vehicle

A cooling device for a motor vehicle, including a cooling circuit configured to cool an engine assembly using a liquid coolant circulated by at least one variable-flowrate pump, the flowrate of each pump being controlled by a control system. The control system is configured to control the flowrate of each pump in a closed-loop regulating system as a function of the temperature of the liquid coolant and of a setpoint temperature.

Cooling device for an automotive vehicle

A cooling device for an automotive vehicle of electric type, the cooling device being able to be powered up or powered down and including a cooling circuit capable of cooling an engine assembly including an electronic driver system using a coolant, the cooling circuit being controlled by a control system capable of keeping the device powered up when the vehicle is at end of mission and the temperature of the coolant is above a threshold temperature. The electric vehicle includes a battery charger assembly, and the cooling circuit is capable of cooling the charger assembly and the engine assembly.

The invention relates to a four wheel drive hybrid vehicle provided with at least one power train on each wheel set, a first power train () including at least one heat engine, a second power train () including at least one electric machine, the vehicle also being provided with a friction braking system on each drive wheel and sensor (). The control system includes: a means () for distributing a braking request between the friction braking system and at least one electric machine from a power train, said electric machine being capable of producing a resisting torque; a torque instruction modulation means () for modulating torque instructions to braking systems and power trains based on signals coming from the sensors; and a power train control means (); the distribution means (), the torque instruction modulation means (), and the power train control means () being capable of dynamically interacting so as to output torque commands to the power trains and to the friction braking systems with a view to promoting the stability of the vehicle.

System and method for controlling a four wheel drive vehicle

A method, and corresponding device, for processing a pressure signal from a pressure sensor mounted in a combustion chamber to detect a combustion in an internal combustion engine. The method provides a pressure signal; filters the pressure signal with a filtration mechanism having a variable gain; generates an output signal representative of the filtered pressure signal; generates a signal representative of the error between the pressure signal and the output signal; and determines if the combustion has occurred during an expansion phase of the thermodynamic cycle.

Method for processing a pressure signal and corresponding device

A device for processing a signal of pressure measurement of an internal combustion engine combustion chamber. The device obtains, by a low-pass filter of the pressure measuring signal, a filtered signal, subtracts the filtered signal from the pressure measuring signal to obtain a difference signal, compares the difference signal to a predetermined threshold value, and determines a combustion starting time as a time at which the difference signal reaches the predetermined threshold value.

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Boulogne Billancourt, France

Marco Marsilia