公开(公告)号：US20130263831A1

公开(公告)日：2013-10-10

申请号：US13908429

申请日：2013-06-03

申请人： Renault Trucks

发明人： Nicolas AUFFRET ,  Nicolas DRONNIOU

IPC分类号： F02M25/07

CPC分类号： F02M25/07 ,  F02B29/0412 ,  F02B37/004 ,  F02B37/013 ,  F02M26/00 ,  F02M26/08 ,  F02M26/10 ,  F02M26/28 ,  F02M26/34 ,  F02M26/42 ,  Y02T10/121 ,  Y02T10/144 ,  Y02T10/146

摘要： 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.

摘要翻译： 内燃机包括多个气缸，进气管线和收集废气的排气管线。 发动机还包括用于将废气的一部分从排气管路朝向空气进入管线重新路由的EGR管线和至少第一涡轮增压器，该第一涡轮增压器包括由朝向大气流动的废气驱动的第一涡轮机，该第一涡轮机与位于 在进气线上。 发动机还包括位于EGR管路上的可变几何形状的EGR涡轮机，其由在EGR线路中流动的EGR气体驱动。 因此，由于在涡轮机中发生压力降低，EGR气体温度降低，并且需要来自发动机冷却系统的较少的冷却功率来冷却EGR。