| 摘要 |
An internal combustion engine, having a heat exchange system, a fan for moving air therethrough and a shroud and shroud exit section for controlling the air path. The shroud exit encloses the fan and includes throat (CF) radial expander (R) and radial flat (RF) sections whereby air is drawn through the heat exchanger axially and expelled radially along said exit sections simultaneously interruption sections or cutout portion are strategically located in the shroud exit to direct parts of the air flow whereby they exit axially. The fan has a projected axial width (AW) such that a general relationship exists with the shroud exit sections: CF = AW/3, RF = AW/3, and R = 2AW/3. |
