| 摘要 |
The internal combustion engine (1 ) comprises a plurality of cylinders (3), an air intake line (5) capable of carrying intake air towards an engine intake manifold (4), and an exhaust line (7) capable of collecting,, exhaust gas from an exhaust manifold (6). The internal combustion engine (1 ) also comprises an EGR line (12) capable of rerouting a part of the exhaust gas from the exhaust line (7), through an EGR cooler (14), towards the air intake line and at least a first turbocharger comprising a first turbine (15) driven by the exhaust gas flowing towards the atmosphere, mechanically linked to a first compressor (16) located on the air intake line (5). The internal combustion engine further comprises an EGR turbine (17) located on the EGR line (12) upstream from the EGR cooler (14), driven by the EGR gas flowing in the EGR line (12). Thus, EGR gas flowing from the exhaust manifold goes through the EGR turbine prior to entering the EGR cooler. Due to the pressure reduction occurring in the turbine, the EGR gas temperature is lowered at the intake manifold inlet, and less cooling power from the engine cooling system is required to cool down the EGR gas in the EGR cooler. |
