Abstract: A hydraulic motor/pump regenerator system for recovering energy from the moving vehicle having high efficiency and precise control, thereby allowing the maximum amount of energy to be recovered and reused, is described. Three, fixed-displacement pump/motors are used to enable the system to recover and reapply energy at efficiencies expected to be above 70% in most circumstances. The invention is not limited to the use of three fixed displacement hydraulic units since using more units may in some drive cycles further improve efficiency. By selecting an appropriate combination of pump/motor units for providing the driveshaft torque required by the driver, embodiments of the present invention generate high recovery efficiency at any speed.

Abstract: An integral accumulator/reservoir system including a low pressure vessel having a low-pressure vessel wall defining a low-pressure vessel cavity; a high-pressure accumulator having a high-pressure accumulator wall defining a high-pressure accumulator cavity, the high-pressure accumulator being disposed in the low-pressure vessel cavity, the high-pressure accumulator wall including an aluminum layer; a flexible bladder, the flexible bladder being disposed in the high-pressure accumulator cavity; and a sensor module operably connected to the aluminum layer.

Abstract: A hydraulic motor/pump regenerator system for recovering energy from the moving vehicle having high efficiency and precise control, thereby allowing the maximum amount of energy to be recovered and reused, is described. Three, fixed-displacement pump/motors are used to enable the system to recover and reapply energy at efficiencies expected to be above 70% in most circumstances. The invention is not limited to the use of three fixed displacement hydraulic units since using more units may in some drive cycles further improve efficiency. By selecting an appropriate combination of pump/motor units for providing the driveshaft torque required by the driver, embodiments of the present invention generate high recovery efficiency at any speed.

Abstract: Embodiments relate to systems and methods for transferring power from a vehicle drive train to a hydraulic pump. One aspect of the present invention provides system including a torque converter; a torque converter hub connected to at least the torque converter; and a synchronous drive system coupled to at least the torque converter.

Abstract: An integral accumulator/reservoir system including a low pressure vessel having a low-pressure vessel wall defining a low-pressure vessel cavity; a high-pressure accumulator having a high-pressure accumulator wall defining a high-pressure accumulator cavity, the high-pressure accumulator being disposed in the low-pressure vessel cavity, the high-pressure accumulator wall including an aluminum layer; a flexible bladder, the flexible bladder being disposed in the high-pressure accumulator cavity; and a sensor module operably connected to the aluminum layer.