Renault S.a.s.

Jean Bretheau

Vincent Vermuse

Frederic Roudeau

Frédéric Roudeau

Thomas Turpin

A motor vehicle power train control device capable of furnishing set signals of torque applied to wheels of the motor vehicle. The control device includes a mechanism to generate a signal representing a limitation of variation in speed of a heat engine integrated in a power train capable of reducing variations that are disturbing with regard to acoustics of the power train, and includes a mechanism to determine an operating point of the power train in an optimal operating range according to the signal that represents limitation of speed. The mechanism for generating the signal that represents a limitation of variation in the speed of the heat engine integrated in the power train is furnished, at an input, by parameters that represent characteristics of the motor vehicle and by parameters that represent the driver's wishes.

Device and method for controlling torque applied to wheels of a vehicle

A device delivers a torque setpoint signal applicable to the vehicle wheels of a motor vehicle including an automatic transmission. The torque setpoint signal has static and dynamic components that are set according to input data supplied by an input unit and based on a recorded list of parameters representing the driver's will, the motor vehicle state, and the environment thereof. The device includes a first unit for computing the dynamic component of a gross torque, a second unit for computing the static component of a gross torque, the second unit being connected to the output of the first unit, and a unit for adaptation to a brake situation producing the static component of the torque adapted to the braking situation according to the list of parameters.

Method for producing a control instruction adaptable to a brake situation for a transmission device of a motor vehicle power train and corresponding device

A device for controlling an automated transmission of a motor vehicle engine-transmission unit adapted to deliver a torque setpoint signal to be applied to wheels of the motor vehicle including two static and dynamic components produced based on input data delivered by an input unit. The input data includes a recorded list of parameters representing the driver's wishes, the motor vehicle state, and the motor vehicle surroundings. The device includes a first unit capable of calculating a dynamic torque component not adapted to a slope and/or load situation; a second unit for adaptation to the slope and/or load situation delivering a dynamic torque component adapted to the slope and/or load situation; a third unit capable of calculating a static torque component not adapted to the slope and/or load situation; and a fourth unit for adaptation to the slope and/or load situation delivering a static torque component adapted to the slope and/or load situation.

Method for producing a control setpoint adapted to a slope and/or load situation for a motor vehicle engine-transmission unit transmission device and corresponding device

A device for controlling an automated transmission of a motor vehicle engine-transmission unit capable of delivering a torque setpoint signal to be applied to the motor vehicle wheels, including two static and dynamic components, produced based on input data delivered by an input unit including a recorded list of parameters representing the driver's wishes, the motor vehicle state, and the motor vehicle surroundings. The device includes a first unit capable of calculating a dynamic torque component not adapted to a cornering situation; a second unit capable of calculating a static torque component, connected to the input of the first unit; and a unit for adaptation to the come in situation delivering a static torque component adapted to the cornering situation in accordance with a list of predetermined input parameters.

Method for producing a setpoint adapted to a cornering situation for a motor vehicle engine-transmission unit transmission device and corresponding device

A method for controlling an automatic transmission of a power train for a motor vehicle, including producing a first set torque signal to be applied to the wheels, which represents wishes of the motor vehicle driver and that includes two components: a static component and a dynamic component. The dynamic component of the set signal is filtered according to at least two predetermined thresholds that define at least three distinct filtering zones. A filter of order n is used in the first and the third filtering zone and, in the second filtering zone, a maximum slope is imposed upon the dynamic component of the first set signal, the maximum slope being adjustable according to predetermined input data.

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Antony, France

Jean Bretheau