Valeo Systemes De Controle Moteur

Continental Automotive France

Philippe Lutz

Sébastien Potteau

Damien Fournigault

Laurent Albert

Florent David

Pascal Menegazzi

Aurélien Ramseyer

Kévin Surbled

Dominique Boutrot

Julien Marcinkowski

Jean-Bastien Vogel

Matthew Webster

Disclosed is a method for estimating the flow rate Qof exhaust gases recirculated through an exhaust gas recirculation valve connecting an exhaust circuit and an intake circuit of a combustion engine, the method including the steps: &#x2014;of determining a difference in pressure &#x394;P between the upstream and downstream sides of the valve, determining a density &#x3c1;of the recirculated exhaust gases passing through the valve, determining a corrected effective area Sof the valve, estimating the flow rate QEGR of the recirculated exhaust gases from these three parameters.

Method for estimating the flow rate of recirculated exhaust gas passing through a valve

The invention relates to an assembly () comprising: an admission circuit () extending between an air inlet () and an outlet connected to the inlet of a heat engine (); an exhaust circuit () extending between an inlet connected to the outlet of the heat engine () and an exhaust gas outlet (); said heat engine (); a return loop () enabling all or some of the exhaust gases in the exhaust circuit () to be reinjected upstream of the heat engine (); and an electric compressor () arranged in the assembly () in such a way as to be able to receive gases recirculating in the return loop ().

Assembly comprising a heat engine and an electric compressor

The invention relates to a method for managing the power of a hybrid vehicle selectively driven by an electric motor and a heat engine, the electric motor being supplied with power by a power storage unit capable of being recharged by the heat engine, wherein according to the method the level of charge of the power storage unit is monitored so as to select the mode in which the vehicle is driven by the heat engine or that in which the vehicle is driven by the electric motor, said method including the steps of: determining a travelling profile of the vehicle associated with a path of said vehicle; and determining (), according to said travelling profile, a threshold level of charged (S2), referred to as authorized threshold, below which the mode in which the vehicle is driven by the heat engine is activated.

Method and system for managing the power of a hybrid vehicle

The invention relates to an internal combustion heat engine, with at least one combustion chamber for intake gases comprising a mixture consisting of a fuel such as petrol and an oxidizer such as air, connected to an intake circuit (A) for the intake of said intake gases into the chamber and an exhaust circuit (B) for the exhaust of the burnt gases outside the chamber, an exhaust gas recirculation circuit (C, D) connecting the exhaust circuit to the intake circuit, and a control system for the exhaust gas recirculation. The control system is arranged so that the exhaust gas recirculation is implemented for at least one operation point defined by an engine speed and a torque output by the engine, for which the output torque is higher than 50% of the maximum engine torque. The invention can be used for operating the engine with optimal stoichiometric mixture and ignition advance without the occurrence of rattling.

Internal combustion heat engine, control system, method for dimensioning the engine, and automobile with said engine

Internal combustion petrol engine comprising an engine block () connected to an intake circuit () including a compressor () and an exhaust circuit () including a turbine () which drives the compressor, the internal combustion engine including an exhaust gas recirculation circuit () which is connected to the exhaust circuit downstream of the turbine and is connected to the intake circuit upstream of the compressor, the recirculation circuit comprising a cooler. Method of managing such an engine.

Growing community of inventors

Le Vesinet, France

Philippe Lutz