| 摘要 |
A method of exhaust gas recirculation (EGR) and an EGR circuit (40) for an internal combustion engine having at least one cylinder (11) with an exhaust system having an exhaust emission after-treatment means (19,21) for exhaust gases from the cylinder(s), an air supply system including a main turbocharger (14) for supplying fresh air to the cylinders, the EGR circuit including conduit (41) connecting the downstream side of the emission after-treatment means (19,21), via a controllable EGR valve (48), to the fresh air supply to the charger (14), and an exhaust gas flow pump (42), also a turbocharger, which is located in said conduit (41) to supply a desired gas flow for mixing with the air supply system up stream of the charger (14). |
