Patent ID: 7559197

Claim:
A hydraulic control system, comprising: a first fluid actuator; a first pump configured to produce a first stream of pressurized fluid directed to the first fluid actuator; a second fluid actuator; a second pump configured to produce a second stream of pressurized fluid directed to the second fluid actuator; a combiner valve having a valve element movable to combine the second stream of pressurized fluid with the first stream of pressurized fluid directed to the first fluid actuator, the combiner valve being movable between a unidirectional flow-combining position, a flow-blocking position, and a bidirectional flow-combining position; and a controller in communication with the combiner valve, the controller configured to: receive an operator input indicative of a desired velocity for the first fluid actuator; determine a flow rate for the first fluid actuator corresponding to the desired velocity; determine a flow capacity of the first pump; and move the valve element of the combiner valve to combine the second stream of pressurized fluid with the first stream of pressurized fluid directed to the first fluid actuator when the determined flow rate for the first fluid actuator is greater than the determined flow capacity of the first pump.