| 摘要 |
A sensor (23) for detecting a temperature linked to the engine temperature is connected to a control unit (20) which can close an exhaust gas recirculation (EGR) valve (22) so that exhaust gas recirculation is stopped if the engine temperature exceeds a pre-determined level. The EGR system comprises a return line (18) for recirculating exhaust gases from the engine (1) into an inlet line (19) for supplying air to the engine, a valve for controlling the amount of exhaust gas to be recirculated and a cooler (21) for the exhaust gases in the return line. The engine is connected to a cooling system with a circulating coolant for cooling the engine and the exhaust gases in the return line. |
