Patent ID: 8302400
Filing Date: 2012-11-06
Classification: F02B,F02M,Y02T

Abstract:
1. An internal combustion engine having a plurality of cylinders, comprising: an air intake line capable of carrying intake air towards the cylinders; an exhaust line capable of collecting exhaust gas from the cylinders; an EGR line capable of rerouting a part of the exhaust gas from the exhaust line towards the air intake line; at least a first turbocharger comprising a first turbine driven by the exhaust gas flowing towards the atmosphere, mechanically linked to a first compressor located on the air intake line; an EGR turbine located on the EGR line, the EGR turbine being solely driven by the EGR gas flowing in the EGR line; and an energy recovering means linked to the EGR turbine and capable of recovering the energy provided by the EGR turbine ,wherein the energy recovering means is a second compressor mechanically connected to the EGR turbine and capable of compressing gas flowing from the first compressor outlet towards the cylinders; wherein the EGR turbine is of the variable geometry type, and the flow of EGR gas is regulated by varying the geometry of the turbine, an inlet of the EGR line is upstream of any turbine located on the exhaust line, and an outlet of the EGR line is connected to the air intake line upstream from at least one compressor in the air intake line.