POWERTRAIN COMPRISING A NON-COOLED EXHAUST-GAS RECIRCULATION LINE AND ASSOCIATED METHOD

The invention relates to a motor-propulsion group (10) of a motor vehicle comprising an exhaust gas recirculation circuit (34) which comprises: - a first exhaust gas recirculation duct (36) in which is interposed a first (38) heat exchanger for cooling the recirculated exhaust gases; - a second recirculation duct (40) in parallel with the first heat exchanger (38) and in which is interposed a second heat exchanger (42, 54) between a flow of engine lubrication fluid and the recirculated exhaust gases; characterized in that the exhaust gas recirculation circuit (34) comprises a third recirculation duct (44) arranged in parallel with the first heat exchanger (38) and in parallel with the second heat exchanger (42, 54). The invention also relates to an associated implementation method.