Hydraulic system with cross function regeneration

摘要

A regeneration method for a hydraulic system enables the fluid being forced from a first actuator (110) to be used to power a second actuator (114). Often the force of the load acting on a hydraulic actuator (110) is used to move the actuator (110) into a given position which motion forces fluid from the actuator (110). Rather than simply draining that fluid to the system tank (120), the fluid is routed to a second actuator (114) to be powered when the pressure of the fluid draining at the first actuator (110) is greater than the pressure required to power the second actuator (114). At other times the draining fluid can be used to drive the pump (102) which has been configured to operate as a motor thereby driving the prime mover (104) connected to the pump. Alternatively the draining fluid can be routed to an accumulator (145) where it is stored under pressure until needed to power an actuator (110,114) of the system. A bidirectional pilot operated poppet valve (10) is also disclosed.