| 摘要 |
A fan drive system includes a pump, at least one implement arrangement in fluid communication with the pump and a fan drive unit driveably connected to the pump. The fan drive unit is in fluid communication with the pump through a modulation valve. A signal operator is structured and arranged to receive at least one implement signal and a fan drive signal and generate a load signal output, wherein the pump is adapted to modify an output flow of the pump in response to the load signal. A control valve is urged to respond under the influence of a sensed condition and is in fluid communication with the modulation valve and the signal operator through a signal conduit.
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