Abstract: An internal combustion engine includes a plurality of cylinders, an air intake line and an exhaust line collecting exhaust gas. The engine also includes an EGR line for rerouting a part of the exhaust gas from the exhaust line towards the air intake line and at least a first turbocharger comprising a first turbine driven by the exhaust gas flowing towards the atmosphere, linked to a first compressor located on the air intake line. The engine further includes a variable geometry EGR turbine located on the EGR line, driven by the EGR gas flowing in the EGR line. Thus, thanks to the pressure reduction occurring in the turbine, the EGR gas temperature is lowered, and less cooling power from the engine cooling system is required to cool down the EGR.

Abstract: A method for the operation of homogeneous charge compression ignition engines (HCCI) using gasoline or similar single-stage ignition fuels. Partial fuel stratification (PFS), intake pressure boosting and controlled BDC-intake temperatures, typically in the range of 95° C. to about 125° C., are used to reduce combustion pressure rise rates (PRR), and therefore, the knocking propensity of homogeneous charge compression ignition engines operating on gasoline or similar fuels.

Abstract: An internal combustion engine includes a plurality of cylinders, an air intake line and an exhaust line collecting exhaust gas. The engine also includes an EGR line for rerouting a part of the exhaust gas from the exhaust line towards the air intake line and at least a first turbocharger comprising a first turbine driven by the exhaust gas flowing towards the atmosphere, linked to a first compressor located on the air intake line. The engine further includes a variable geometry EGR turbine located on the EGR line, driven by the EGR gas flowing in the EGR line. Thus, thanks to the pressure reduction occurring in the turbine, the EGR gas temperature is lowered, and less cooling power from the engine cooling system is required to cool down the EGR.

Abstract: An internal combustion engine includes a plurality of cylinders, an air intake line and an exhaust line collecting exhaust gas. The engine also includes an EGR line for rerouting a part of the exhaust gas from the exhaust line towards the air intake line and at least a first turbocharger comprising a first turbine driven by the exhaust gas flowing towards the atmosphere, linked to a first compressor located on the air intake line. The engine further includes a variable geometry EGR turbine located on the EGR line, driven by the EGR gas flowing in the EGR line. Thus, thanks to the pressure reduction occurring in the turbine, the EGR gas temperature is lowered, and less cooling power from the engine cooling system is required to cool down the EGR.

Abstract: An internal combustion engine includes a plurality of cylinders, an air intake line and an exhaust line collecting exhaust gas. The engine also includes an EGR line for rerouting a part of the exhaust gas from the exhaust line towards the air intake line and at least a first turbocharger comprising a first turbine driven by the exhaust gas flowing towards the atmosphere, linked to a first compressor located on the air intake line. The engine further includes a variable geometry EGR turbine located on the EGR line, driven by the EGR gas flowing in the EGR line. Thus, thanks to the pressure reduction occurring in the turbine, the EGR gas temperature is lowered, and less cooling power from the engine cooling system is required to cool down the EGR.

Abstract: A nozzle assembly includes a first needle and a second needle controlling respectively fuel flow towards a first series of outlets and a second series of outlets. It includes a passive control valve adapted to select, on the basis of the fuel feeding pressure, the needle to be activated for fuel delivery to the combustion chamber of an internal combustion engine. An injector with such an assembly is economic and efficient to spray fuel with two different patterns.

Abstract: An internal combustion engine includes a plurality of cylinders, an air intake line and an exhaust line collecting exhaust gas. The engine also includes an EGR line for rerouting a part of the exhaust gas from the exhaust line towards the air intake line and at least a first turbocharger comprising a first turbine driven by the exhaust gas flowing towards the atmosphere, linked to a first compressor located on the air intake line. The engine further includes a variable geometry EGR turbine located on the EGR line, driven by the EGR gas flowing in the EGR line. Thus, thanks to the pressure reduction occurring in the turbine, the EGR gas temperature is lowered, and less cooling power from the engine cooling system is required to cool down the EGR.

Abstract: This internal combustion engine system includes an internal combustion engine, an intake line, an exhaust line, a turbocharger, and an EGR assembly for recirculating a part of the exhaust gases. The EGR assembly has an EGR assembly inlet to collect the part of the exhaust gases, an EGR assembly outlet to allow the part of the exhaust gases towards the compressor. A particulate filter unit is also provided. In the exhaust line, a converter unit decreases nitrogen oxides. The particulate filter unit includes a first particulate filter component, in the exhaust line downstream of converter unit, which defines a first flow path; a second particulate filter component, in the EGR assembly, which defines a second flow path. The first and second particulate filter component are thermally connected, and the first and the second flow paths are separate.

Abstract: A six-stroke internal combustion engine is provided with an injection arrangement adapted to inject into at least one of its cylinders a liquid containing a reductor agent and/or a precursor for a reductor agent. During the fifth and sixth strokes of a piston within the cylinder, this reductor agent can react with NOx molecules in order to clean the gases resulting from the combustion of a fuel mixture within the cylinder.

Abstract: This nozzle assembly (1) comprises a first needle (11) and a second needle (12) controlling respectively fuel flow towards a first series of outlets (213) and a second series of outlets (223). It includes a passive control valve (18) adapted to select, on the basis of the fuel feeding pressure, the needle (11 or 12) to he activated for fuel delivery to the combustion chamber of an internal combustion engine. An injector with such an assembly is economic and efficient to spray fuel with two different patterns.

Abstract: An internal combustion engine includes a plurality of cylinders, an air intake line and an exhaust line collecting exhaust gas. The engine also includes an EGR line for rerouting a part of the exhaust gas from the exhaust line towards the air intake line and at least a first turbocharger comprising a first turbine driven by the exhaust gas flowing towards the atmosphere, linked to a first compressor located on the air intake line. The engine further includes a variable geometry EGR turbine located on the EGR line, driven by the EGR gas flowing in the EGR line. Thus, thanks to the pressure reduction occurring in the turbine, the EGR gas temperature is lowered, and less cooling power from the engine cooling system is required to cool down the EGR.

Abstract: This method is for controlling the intake and exhaust valves of the cylinders of an internal combustion engine which is capable of operating either in four-stroke positive mode or in two-stroke braking mode. The control means pilot the valves so that at least a first exhaust valve of each cylinder (1) is opened (C43) prior to a first instant (t1) when the piston of said cylinder reaches its top dead center position and so that the first exhaust valve is kept in an open state (C43) with a first lift (L1) and for a first predetermined period of time (?t1), prior to said first instant (t1), and at least an exhaust valve is kept in an open state, with a second lift (L2) higher than the first lift and for a second predetermined period of time (?t2), after the first instant (t1).

Abstract: This method is for controlling the intake and exhaust valves of the cylinders of an internal combustion engine which is capable of operating either in four-stroke positive mode or in two-stroke braking mode. The control means pilot the valves so that at least a first exhaust valve of each cylinder (1) is opened (C43) prior to a first instant (t1) when the piston of said cylinder reaches its top dead center position and so that the first exhaust valve is kept in an open state (C43) with a first lift (L1) and for a first predetermined period of time (?t1), prior to said first instant (t1), and at least an exhaust valve is kept in an open state, with a second lift (L2) higher than the first lift and for a second predetermined period of time (?t2), after the first instant (t1).