| 摘要 |
PROBLEM TO BE SOLVED: To enable promoting warming-up during warming-up an engine. SOLUTION: In an EGR gas cooling device of this type, an EGR cooler 10 adopting engine cooling water to coolant is arranged on the ways of EGR passages 9a, 9b, 9c. An exhaust passage 15 leading to an exhaust passage 7 of an engine 1 is connected to the EGR passages 9b, 9c in the downstream of the EGR cooler 10. A changeover means 14 is arranged for changing over the EGR passage 9c in the downstream of the connection part with the exhaust passage 15. |
