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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 dispo

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.

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1. An integral accumulator/reservoir system, the system comprising: 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 accumul

1. An integral accumulator/reservoir system, the system comprising: 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; anda sensor module operably connected to the aluminum layer. 2. The system of claim 1 wherein the sensor module includes a strain gauge operable to detect strain in the aluminum layer. 3. The system of claim 2 further comprising a central processing unit operably connected to the strain gauge, the central processing unit being operable to use the detected strain to calculate a parameter selected from the group consisting of number of pressure cycles, maximum pressure, and pressure history. 4. The system of claim 1 wherein the sensor module includes a temperature sensor operable to detect temperature of the aluminum layer. 5. The system of claim 4 further comprising a central processing unit operably connected to the temperature sensor, the central processing unit being operable to use the detected temperature to calculate a parameter selected from the group consisting of tank fluid pressure and tank fluid volume. 6. The system of claim 1 wherein the sensor module comprises: a sensor selected from the group consisting of a strain gauge and a temperature sensor;an analog-to-digital converter operably connected to the sensor;a central processing unit operably connected to the analog-to-digital converter; anda communication interface operably connected to the central processing unit. 7. The system of claim 6 wherein the communication interface is selected from the group consisting of a wireless transceiver and a CAN/BUS communication chip. 8. The system of claim 1 wherein the sensor module further comprises a GPS/GSM interface. 9. The system of claim 1 further comprising a carbon/epoxy layer exterior to the aluminum layer, and a plastic layer interior to the aluminum layer and adjacent to the flexible bladder. 10. The system of claim 9 is further comprising a nonstructural fiberglass layer exterior to the carbon epoxy layer. 11. A braking energy regeneration system for use with a vehicle prime mover, the system comprising: a power transfer module operably connected to the vehicle prime mover;a hydraulic pump system operably connected to the power transfer module, the hydraulic pump system having an axial piston pump in fluid communication with a fixed displacement pump;an integral accumulator/reservoir system operably connected to the hydraulic pump system, the integral accumulator/reservoir system having a high-pressure accumulator, a low-pressure vessel, and a flexible bladder; anda control system operably connected to the vehicle prime mover, the power transfer module, the hydraulic pump system, and the integral accumulator/reservoir system;wherein the fixed displacement pump is in fluid communication with the low-pressure vessel, the fixed displacement pump is in fluid communication with the axial piston pump, and the axial piston pump is in fluid communication with the high-pressure accumulator; andwherein the integral accumulator/reservoir system comprises; the low pressure vessel having a low-pressure vessel wall defining a low-pressure vessel cavity;the 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;the flexible bladder being disposed in the high-pressure accumulator cavity; anda sensor module operably connected to the aluminum layer. 12. The system of claim 11 wherein the sensor module includes a strain gauge operable to detect strain in the aluminum layer. 13. The system of claim 12 further comprising a central processing unit operably connected to the strain gauge, the central processing unit being operable to use the detected strain to calculate a parameter selected from the group consisting of number of pressure cycles, maximum pressure, and pressure history. 14. The system of claim 11 wherein the sensor module includes a temperature sensor operable to detect temperature of the aluminum layer. 15. The system of claim 14 further comprising a central processing unit operably connected to the temperature sensor, the central processing unit being operable to use the detected temperature to calculate a parameter selected from the group consisting of tank fluid pressure and tank fluid volume. 16. The system of claim 11 wherein the sensor module comprises: a sensor selected from the group consisting of a strain gauge and a temperature sensor;an analog-to-digital converter operably connected to the sensor;a central processing unit operably connected to the analog-to-digital converter; anda communication interface operably connected to the central processing unit. 17. The system of claim 16 wherein the communication interface is selected from the group consisting of a wireless transceiver and a CAN/BUS communication chip. 18. The system of claim 11 wherein the sensor module further comprises a GPS/GSM interface. 19. The system of claim 11 further comprising a carbon/epoxy layer exterior to the aluminum layer, and a plastic layer interior to the aluminum layer and adjacent to the flexible bladder. 20. The system of claim 19 further comprising a nonstructural fiberglass layer exterior to the carbon epoxy layer.