NOVELTY - The circuit has a flow control valve (318) i.e. proportional flow valve, for controlling a hydraulic fluid flow rate supplied from a hydraulic pump (314) i.e. fixed displacement pump, to the load. A hydraulic fluid accumulator (320) is arranged parallel with respect to the flow control valve. A pressure relief valve (322) i.e. proportional relief valve, controls hydraulic system pressure output by the hydraulic pump. A constant speed electric motor (324) drives the hydraulic pump. A work flow path (316) is extended from the hydraulic pump through the flow control valve to the load.    USE - Hydraulic circuit for use in a hydraulic drive circuit for driving a hydraulic component e.g. hydraulic actuator such as hydraulic cylinder and hydraulic motor, of a hydraulically powered industrial machine i.e. injection molding machine, within a hydraulic system by a hydraulic pump i.e. fixed displacement pump (all claimed).    ADVANTAGE - The accumulator has a parallel configuration for enhancing an overall energy efficiency of the hydraulic drive circuit over a course of a desired work cycle of the load. The hydraulic circuit has an accumulator subsystem including a configuration allowing a system pressure to be set at a lower pressure than that of an accumulator pressure at a set of predetermined phases during the work cycle, thus allowing the system pressure to more closely match a load pressure to enhance overall operating efficiency of the hydraulic circuit by reducing throttling losses. The hydraulic circuit improves performance efficiency of the drive circuit to drive the load corresponding to a set of repetitive industrial processes.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for driving a load with a drive circuit having a hydraulic pump.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a hydraulic system including a hydraulic drive circuit for driving a set of hydraulic components of a hydraulically-powered industrial machine having a repeating work cycle.    Hydraulic pump (314)    Work flow path (316)    Flow control valve (318)    Hydraulic fluid accumulator (320)    Pressure relief valve (322)    Constant speed electric motor (324)