TEACH, KYLE R.,NICHOLS, THOMAS A.,WRIGHT, WALTER C.,ROTOLE, DAVID V.
申请号：
CA2898399
公开号：
CA2898399A1
申请日:
2015.07.27
申请国别(地区):
CA
年份:
2016
代理人:
摘要：
A pressure control system is described for a vehicle having a hydraulicallyactuatedheader. The system may include a hydraulic lifting circuit for raising andlowering theheader, a hydraulic float circuit for floating the header, and a drain tank. Alifting circuitcontrol valve may be configured to control drainage of hydraulic fluid fromthe hydrauliclifting circuit to the drain tank. A float circuit control valve may beconfigured to controldrainage of hydraulic fluid from the hydraulic float circuit to the draintank. A user interfacemay be configured to receive one or more inputs to control drainage ofhydraulic fluid fromthe hydraulic circuits. Based upon the one or more inputs, at least one of thecontrolvalves may be opened, in order to depressurize, respectively, one of thehydraulic circuits.
