| 摘要 |
PROBLEM TO BE SOLVED: To provide a cooling device for EGR and oil which has a small installation space, improve vibration durability, and heats lubricating oil at the time of start in a low temperature. SOLUTION: A cooler housing part 10 is directly attached to a cylinder block 3, cooling water of engine makes flow in and out into/from the cooler housing 10, an EGR heat exchanger 16 and oil heat exchanger 15 are housed adjacent to each other in the cooler housing part 10, and they and dipped in cooling water. Accordingly, a cooling water piping for leading the cooling water in an engine into the cooler housing part 10 is eliminated, vibration durability is improved, and also an arrangement space is contracted. Since the EGR heat exchanger 16 and the oil heat exchanger 15 are disposed adjacent to each other, heat of the high temperature EGR gas which flows the EGR heat exchanger 16 is transmitted to low temperature lubricating oil which flows the oil heat exchanger 15 through the cooling water, at the time of start in the low temperature, the lubricating oil is warmed, and starting easiness in the low temperature is improved. |
