For the unloading of liquified gases, we developed two drive systems to drive the cryogenic pump on the tanktrailer: Hydraulic version & Electric drive version.
This is a high pressure, high flow, hydraulic system, providing drive to a hydraulic motor, which is attached to the Cryogenic pump.
The system uses two computer controllers, which are situated on the tractor and on the trailer for e in the cab and the other on the trailer.
This system uses an alternator mounted on the tractor unit. Hydraulics are used to turn the alternator via a close coupled hydraulic motor. The resulting electrical power, is transferred onto the trailer and drives an electric motor which is close coupled to the cryogenic pump.