Power generation arrangement

1. A power generating unit mounted to a source of rotational energy and arranged to supply hydraulic pressure and flow to at least one driven accessory, the power generating unit comprising a housing removably mounted on the source of rotational energy, an input shaft adapted to be connected to the source of rotational energy, said input shaft comprising a first end provided with means for engaging the input shaft to a power output interface on the source of rotational energy, a second end connected to a hydraulic pump and means for selectively engaging the input shaft to the hydraulic pump, where the input shaft, the means for selectively engaging the input shaft, and the hydraulic pump are arranged as an integral power generating unit within said housing.

2. A power generating unit according to claim 1 , wherein the source of rotational energy is a prime mover.

3. A power generating unit according to claim 1 , wherein the source of rotational energy is a gearbox or transmission selectively engaged to and driven by the prime mover.

4. A power generating unit according to any one of claims 1 , wherein the means for selectively engaging the input shaft to the hydraulic pump is a clutch.

5. A power generating unit according to any one of claims 1 , wherein the means for selectively engaging the input shaft to the hydraulic pump is a clutch connected to a mechanically engageable coupling.

6. A power generating unit according to claim 1 , wherein the means for selectively engaging the input shaft to the hydraulic pump is a mechanically engageable coupling.

7. A power generating unit according to claim 1 , wherein one or more power generating units are arranged to be mounted to one or more power output interfaces at multiple locations on the source of rotational energy.

8. A power generating unit according to claim 7 , wherein at least one power generating unit is arranged to be relocatable on the source of rotational energy, whereby at least one power generating unit can be operated in more than one location.

9. A power generating unit according to claim 8 , wherein the power generating units and power output interfaces are provided with a common interface for connecting the input shaft of a power generating unit to a driving shaft on a power terminal.

10. A power generating unit according to claim 9 , wherein the common interface is provided with means that only allows a power generating unit to be mounted at one or more predetermined power output interfaces.

11. A power generating unit according to claim 9 , wherein the common interface is provided with means that prevents a power generating unit from being mounted at one or more predetermined power output interfaces.

12. A power generating unit according to claim 9 , wherein the common interface is provided with means that prevents a power generating unit intended for use on a prime mover from being mounted at one or more predetermined power output interfaces on a transmission, and vice versa.

13. A power generating unit according to claim 1 , wherein the source of rotational energy is arranged to be operated independently of the power generating unit when the input shaft is disengaged from the driving shaft.

14. A power generating unit according to claim 1 , wherein the power generating unit is arranged to supply hydraulic pressure and flow only when the input shaft is engaged to the driving shaft.

15. A vehicle provided with a prime mover and arranged for driving at least one power generating unit according to claim 1 , which power generating unit is arranged to supply hydraulic pressure and flow to at least one driven accessory, wherein the power generating unit comprises a housing removably mounted on a source of rotational energy, an input shaft adapted to be connected to the source of rotational energy, said input shaft comprising a first end provided with means for engaging the input shaft to a power output interface on the source of rotational energy, a second end connected to a hydraulic pump and means for selectively engaging the input shaft to the hydraulic pump, where the input shaft, the means for selectively engaging the input shaft, and the hydraulic pump are arranged as an integral power generating unit within said housing.

16. A vehicle according to claim 15 , wherein the prime mover is arranged to be operated independently of the power generating unit when the input shaft is disengaged from the driving shaft.

17. A vehicle according to claim 15 , wherein the power generating unit is arranged to supply hydraulic pressure and flow only when the input shaft is engaged to the driving shaft.

18. A vehicle according to claim 15 , wherein at least one or more power generating units are arranged to be mounted to one or more power output interfaces at multiple locations on the source of rotational energy.

19. A vehicle according to claim 18 , wherein at least one power generating unit is arranged to be relocatable on the source of rotational energy, whereby at least one power generating unit can be operated in more than one location.

20. A vehicle according to claim 19 , wherein the power generating units and power output interfaces are provided with a common interface for connecting the input shaft of a power generating unit to a driving shaft on a power output interface.

21. A vehicle according to claim 20 , wherein the common interface is provided with means that only allows a power generating unit to be mounted at one or more predetermined power output interfaces.

22. A vehicle according to claim 20 , wherein the common interface is provided with means that prevents a power generating unit from being mounted at one or more predetermined power output interfaces.

23. A vehicle according to claim 20 , wherein the common interface is provided with means that prevents a power generating unit intended for use on a prime mover from being mounted at one or more predetermined power output interfaces on a transmission, and vice versa.