The backbone of the Hydrid is the common pressure rail (CPR) system. This system collects and distributes all the power inside the vehicle.
The internal combustion engine delivers all its energy to a constant displacement pump. The engine torque is directly related to the pressure in the high pressure accumulator and can consequently only vary between 50% (at 200 bar) and 100% (at 400 bar) of the maximum torque. Operation of the engine at low loads is therefore completely avoided.
Each wheel has its own hydraulic motor. These motors act as a pump when braking. The recuperated brake energy is stored in the high pressure accumulator.

The torque of the in-wheel motors is controlled with the hydraulic transformers, one for each axis. The system has a variable traction control for the front and rear axis. The Hydrid has floating cup type pumps, motors and hydraulic transformers.