| 摘要 |
A system (10) for distributing pressurized oil in a farm tractor; the system (10) having an oil distribution network (RT), and a pump assembly (PP) for pumping oil to at least one priority user device (12) to which a relative "main priority" is assigned, and to at least one secondary user device (AD1, AD2, AD3) to which a relative "secondary priority" is assigned. The system (10) is characterized by having a hydraulic logic device (16) by which to ensure, in any operating condition, that the priority user device (12) is always given priority over all the other secondary user devices (AD1, AD2, AD3), while at the same time maintaining a minimum pressure drop in all conditions in which the pump assembly (PP) is able to satisfy all the user devices.
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