Ifp Energies Nouvelles

Compagnie Generale Des Etablissements Michelin

Alexandre Chasse

Jonathan Chauvin

Thomas Leroy

Domenico Di Domenico

Guillaume Sabiron

Wissam Dib

Philippe Moulin

Gilles Corde

Antonio Sciarretta

Maxime Jean

Vincent Godefroy

The invention is a method of characterizing a road for at least one route travelled by at least one road user, with sensors: a three-axis accelerometer (ACC) and a geolocation sensor (GPS). The method comprises a measurement step (MES), a measurement processing step for disregarding (AFF) the effects related to the road user's speed in order to determine vibrations due to the road roughness, and an analysis of the vibrations to characterize (CAR) the condition of the road.

Method of characterizing the condition of a road

A method determines the total mass of an automotive vehicle on the basis of data of a communication network and parameters of the vehicle, in which an estimation of the total laden mass (mv,est) of the vehicle, of the speed of the vehicle (vest) and of the slope of the road (&#x3b1;est) is determined at an instant (k) by applying the fundamental equation of dynamics and as a function of the values of the total mass of the vehicle, of the speed of the vehicle and of the slope of the road at a previous instant (k&#x2212;1).

Method and device for determining an estimate of the total mass of a motor vehicle

A method for analyzing the distribution of energy expenditures of a motor vehicle from data from a communications network and from parameters of the vehicle includes steps in which the energy expenditures of the vehicle over a journey are calculated, the said energy expenditures are analyzed by comparing them with at least one model of the vehicle simulating the same journey, an energy balance report is formulated on the basis of the analysis of the energy expenditures and of the fuel consumption and the said energy balance report is communicated to an external server.

Method and device for analyzing the energy expenditure distribution of a motor vehicle

The invention relates to a combustion engine equipped with a dual supercharging system in which a mechanical compressor is driven by an electric motor. The method controls a combustion engine with the electric motor being controlled by determining a rotational speed setpoint for positive-displacement compressor using a supercharge volume filling model.

Method for controlling a dual-supercharged combustion engine

The invention relates to a method for controlling a combustion engine () equipped with a supercharging system, comprising a turbocharger () and a mechanical compressor () and a bypass circuit disposed in parallel with the mechanical compressor comprising a controlled bypass valve (). The method includes:

Method of controlling a combustion engine equipped with double supercharging

The invention relates to a method for determining the pressure Pupstream of a mechanical compressor () equipped with a double supercharging circuit of a combustion engine. The pressure Pis determined by a dynamic model based on a law of conservation of flow rate in the volume upstream of the mechanical compressor. The model links the pressure Pupstream of the mechanical compressor () to a temperature Tupstream of the mechanical compressor (), to a boost pressure Pand boost temperature Ton the intake side of the engine, and to an openness Bypass of the bypass valve ().

Method of determining a pressure upstream of a compressor for an engine equipped with double supercharging

The invention relates to a method of determining at least one eco-driving indicator wherein at least a first indicator (IND) is determined as an optimal speed (V) that minimizes the energy consumption. Calculation of optimal speed Vis constrained by measured instant speeds Vat breakpoints of the travel where the driver has to adapt his driving according to conditions external to the travel. Once the eco-driving indicator is determined, it can be displayed (AFF) and/or the vehicle can be controlled (COM) in accordance with the indicator.

Growing community of inventors

Paris, France

Alexandre Chasse