Institut Francais Du Pe'trole

Renault S.a.s.

Peugeot Citroen Automobiles Sa

Psa Peugeot Citroen

Michel Castagne

Jean-Baptiste Dementhon

Rémi Noirot

Philippe Moulin

Gilles Corde

Thierry Mazoyer

Jean-Pierre Dumas

Patrick Fayet

Hervé Perrin

Grégory Rousseau

Sébastien Gindre

A method is intended for desulfation of a nitric oxide trap () and regeneration of a particle filter () arranged in an exhaust line () for treating exhaust gas from an internal-combustion engine (), notably a Diesel engine. The saturation rate of the trap and the clogging rate of the filter are evaluated and, as soon as one of the rates reaches a threshold value, the fuel/air ratio of the exhaust gas is increased without it reaching a fuel/air ratio of 1, then desulfation of trap () is performed in association with regeneration of particle filter ().

Method and device intended for desulfation of a nitric oxide trap and regeneration of a particle filter

The invention relates to a method for regenerating a particle filter () integrated into an exhaust line () of an internal combustion engine (), wherein the exhaust gas flows into the filter via an inflow surface () and exit the filter via an outflow surface (). According to the invention, the internal temperature of at least two regions of the filter () is monitored during regeneration of the filter; the oxygen content of the exhaust gas is reduced if at least one of the monitored temperatures rises above a critical temperature; the oxygen content of the exhaust gas is increased in order to continue regeneration if all of the monitored temperatures are below said critical temperature.

Method and device for regenerating a particle filter integrated into an exhaust line of an internal combustion engine

The invention relates to a device for measuring at least the pressure of a fluid present in a chamber (), comprising a sensitive element () arranged in a housing (), supported by a joint () inserted between two elements () which form said chamber. According to the invention, the housing () is open in the direction of the chamber () and the sensitive element () is enclosed in a material () filling said housing.

Device for pressure measurement, particularly in a combustion chamber of an internal combustion engine

The present invention relates to a method for controlling an internal combustion engine having a means () for directly injecting fuel as well as a means () for admitting at least one fluid into the combustion chamber, a cylinder (), a burned-gas exhaust means (), and a processing and control unit () receiving information on at least the driver's torque demand and the engine speed (Ne), comprising a) determining the desired torque (Torque_des) corresponding in particular to driver demand; b) from this desired torque, determining a desired Indicated Mean Effective Pressure (IMEP_des) from which the parameters (Mair_sp, BGR_sp) are established to control admission of at least one fluid into the combustion chamber; and c) determining a specified value of the IMEP (IMEP_sp) from the desired IMEP and at least one magnitude linked to the fluid admitted into the combustion chamber, to define the fuel injection parameters (Mfuel_i, SOI_i, Pfuel) in the combustion chamber.

Method for controlling a direct-injection internal combustion engine and engine using such a method

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.

Method of estimating the fuel/air ratio in a cylinder of an internal-combustion engine

Device intended to improve the working of a catalyst (3) placed in the exhaust manifold of an internal-combustion engine, said exhaust manifold consisting of a tube (2) opening on one side into the collector (1) collecting the combustion gases coming from the cylinder(s) and covering with the other end thereof said catalyst (3). According to the invention, the device comprises:

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Nanterre, France

Michel Castagne