Institut Francais Du Pe'trole

Ifp Energies Nouvelles

Renault S.a.s.

Philippe Moulin

Gilles Corde

Olivier Grondin

Pierre Rouchon

Laurent Thibault

Nicolas Petit

Jonathan Chauvin

Laurent Fontvieille

Wissam Dib

Alexandre Chasse

Michel Castagne

Antonio Sciarretta

Yohann Petillon

Domenico Di Domenico

Grégory Rousseau

Carole Querel

Arnaud Guinois

Bilal Youssef

Ahmad Saab

The present invention determines at least one dangerous driving indicator by use of a physical model based on the dynamics of a vehicle. According to the invention, a dynamic model of the vehicle determines a slip parameter of the vehicle, which deduces a representative dangerous driving indicator.

Method for determining a dangerous driving indicator of a vehicle

The invention relates to a method of controlling a hybrid drive system having at least one electric machine and at least one diesel engine. The invention corrects the static torque setpoint Tof the diesel engine and is performed in a transient state by constructing a nitrogen oxides (NOx) emission model allowing estimation of the emissions of the diesel engine as a function of torque Tof the diesel engine; calculating a dynamic NOx emission setpoint NOfrom the NOx emission model; from the static torque setpoint Tdetermining a dynamic torque setpoint of the diesel engine Tfrom NOx emission setpoint NO; determining a dynamic torque setpoint of the electric machine Tas a function of the static torque setpoint Tof the drive system and of the dynamic torque setpoint of the diesel engine Tand applying the dynamic torque setpoints to the drive system.

Transient-state control method for a hybrid drive system for vehicles

A system for controlling a diesel internal combustion engine including a circuit for partially recirculating exhaust gases, including a mechanism estimating set values of intake-air parameters; a mechanism estimating richness of the exhaust gas; a mechanism determining a set value of the intake richness according to set values of the intake-air parameters; and a mechanism correcting at least one of the set values of the intake-air parameters according to the estimation of the richness of the exhaust gas and the richness set value.

System and method for controlling an internal combustion engine for a motor vehicle in transit

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.

Method of determining an eco-driving indicator for the travel of a vehicle

A method for a turbocharger of a heat engine including a turbine, a compressor, and a by-pass actuator that can be used to control an air flow that does not pass through the turbine. The method includes determining a position set point of the by-pass actuator as a function of a compression ratio set point, a compression ratio measurement, a measurement of the rate of flow through the compressor, a measurement of the pressure downstream from the turbine, a measurement of the pressure downstream from the compressor, a measurement of the temperature upstream from the turbine, and a measurement of the temperature upstream from the compressor. The method can be used to control a supercharging device with a single or dual turbocharger.

Method for determining a position set point of a by-pass actuator, intended for a turbosupercharger

A method for controlling a turbocharger using a physical model of the turbocharger speed is disclosed with an application for controlling an internal-combustion engine. A setpoint pressure corresponding to a fluid pressure in the engine intake manifold is converted to a desired speed value. A physical relation connecting the turbocharger speed to a pressure ratio of the fluid flowing into and out of the turbine is then defined. A desired pressure ratio for the fluid flowing into and out of the turbine is deduced therefrom. A turbine actuator control law is estimated by mapping the turbine, from a measurement of the fluid flow rate flowing into the turbine and from the desired ratio of the pressures in the turbine. Finally, the control law is applied to the turbine actuator so that the pressure in the intake manifold is equal to the setpoint pressure.

Method for controlling a turbocharger using a physical model of the turbocharger speed

The present invention relates to a method of estimating the fuel/air ratio in each cylinder of an injection internal-combustion engine comprising an exhaust circuit on which a detector measures the fuel/air ratio of the exhaust gas. An estimator based on a Kalman filter is coupled with a physical model representing the expulsion of the gases from the cylinders and their travel in the exhaust circuit to the detector. The method has application to engine controls.

Method of estimating the fuel/air ratio in a cylinder of an internal-combustion engine by means of an extended Kalman filter

The present invention relates to a method of estimating the fuel/air ratio in each cylinder of an injection internal-combustion engine comprising an exhaust circuit on which a detector measures the fuel/air ratio of the exhaust gas. An estimator based on an adaptive nonlinear filter is coupled with a physical model representing the expulsion of the gases from the cylinders and their travel in the exhaust circuit to the detector. The estimator is also coupled with an estimation of the fuel/air ratio measured from at least one variable of said model such as the total mass of exhaust gas and the mass of fresh air. The method has application to engine controls.

Method of estimating the fuel/air ratio in a cylinder of an internal-combustion engine by means of an adaptive nonlinear filter

The present invention relates to a method of estimating the fuel/air ratio in each cylinder of a multicylinder internal-combustion engine comprising an exhaust circuit in which a single detector measures the fuel/air ratio of the exhaust gas. The estimator comprises a physical model (RTM) representing the expulsion of the gases from the cylinders and the travel thereof in the exhaust circuit to the detector, the model being coupled with a non-linear state observer of Extended Kalman Filter (KF) type.

Growing community of inventors

Paris, France

Philippe Moulin