| 摘要 |
PURPOSE:To economize fuel in traveling mode under the no-load operation state by setting the discharge amount of a variable capacity compressor and the interruption rate of an interrupter to each prescribed value when the no-load operation state of a traveling prime mover is judged. CONSTITUTION:When a processing unit 14 constituted of a microcomputer judges a loaded state from an idle detection signal 24, said processing unit 14 corrects the amount of discharge of a variable capacity compressor 16 in proportion to the difference between the blow-out air temperature Te detected by a sensor 22 and an aimed value through a controller 17, and turns ON/OFF a clutch 11. In engine brake operation, the capacity is set at 100%, and the clutch 11 is turned ON/OFF according to the temperature difference. In idling operation, the capacity for obtaining the min. fuel increase amount for a cooling load is calculated, and the discharge amount is set according to the above-described capacity, and the clutch 11 is turned ON/OFF according to the temperature difference. Therefore, the fuel economization in the traveling mode in the no-load operation state can be obtained. |
