Michael M. Beck,Jerry L. Brinkley,Jonathan L. Buelow,Darwin L. Steffensen
申请号：
US15174400
公开号：
US09769977B2
申请日:
2016.06.06
申请国别(地区):
US
年份:
2017
代理人:
摘要：
A planter system includes a planter having an unloading valve and a controller. The unloading valve is fluidly coupled between an inlet and an outlet of a pump. The unloading valve is configured to receive a fluid at a supply pressure, to supply a first portion of the fluid from the inlet to a hydraulic planter system at an unloading pressure less than the supply pressure, and to recirculate a remainder of the fluid to the pump via the outlet. The controller is communicatively coupled to the unloading valve and to the pump. The controller is configured to control the pressure of the fluid supplied to the inlet and to control the unloading pressure of the first portion supplied to the hydraulic planter system.
