| 摘要 |
PURPOSE:To enable cooling air to be controlled without causing any necessity for an oil cooler, by providing an oil hydraulic motor to be coupled to a cross flow fan in a radiator shroud and controlling driving cylinders, which open and close a movable shroud and a radiator shutter, and selector valves in accordance with the temperature of water in an engine. CONSTITUTION:An oil hydraulic motor 7 is coupled to a cross flow fan 1 in a radiator shroud 4, while driving cylinders 19 and 18 are respectively connected to a movable shroud 4 and a radiator shutter 15. An oil hydraulic pump 6 driven by an engine is connected to the oil hydraulic motor 7 and the driving cylinders 18, 19 through a forward path 8 and a return path 11. The oil hydraulic motor 7, driving cylinder 18 and the driving cylinder 19 are respectively driven to be controlled by a selector valve 10 opened and closed on the basis of a water temperature sensor 13 and a cooler sensor 14 and a selector valve 16 opened and closed on the basis of the water temperature sensor 13 and a car speed sensor 17. |
