| 摘要 |
This exhaust gas recirculation system (2) comprises an exhaust gas cooler (27) and a source (3) of fresh air under pressure. A fresh air injection line (29) connects this source (3) to this cooler (27), which allows to inject air (F) into the cooler (27) when an engine (1) equipped with such a system (2) is turned off. This prevents sulphur deposits on the internal walls or parts of the cooler (27). |
