SAUDER, DEREK, A.,RADTKE, IAN, R.,STOLLER, JASON, J.
申请号：
EP12822819
公开号：
EP2739128A4
申请日:
2012.08.06
申请国别(地区):
EP
年份:
2015
代理人:
摘要：
System and method for controlling the downforce applied to agricultural implement (1) with row units (10), that has a lift control device (320). The system (300) has actuators (32) which are arranged to apply force to row units (10). The actuators (32) include down chambers (33) and lift chambers (35). Each row unit (10) comprises a downpressure control device (320) in fluid communication with the down chamber (33) for controlling pressure in each down chamber (33) separately. A lift pressure control device (310) is in common fluid communication with the lift chambers (35) of all actuators (32) for controlling pressure in lift chambers (35).
