How it works
This motor system relies on a carefully calibrated electric motor, assisted by a secondary hydraulic motor. These two motors are connected to a single junction box, sending all the torque needed to the wheels depending on the situation. Electricity is used when the vehicle needs to “cruise”, requiring a low but constant level of power, while the hydraulic system offers more power when the Businova needs to get going or brake.
There are two key advantages to this hydraulic motor system: the kinetic energy recovered during braking can be stored in pressurised accumulators and fed back into the system to start up the bus, leading to energy savings of up to 70%.
Additionally, the Li-Ion batteries which store the electricity don’t need to provide large doses of power at any one time, vastly improving their performance and life.
Lastly, a low-cylinder diesel engine can be used to extend the drive time between recharges. This engine powers the hydraulic motor directly, driving the vehicle forward and allowing the bus to travel 200km between charges. The result of this multi-hybrid motor system is maximum energy efficiency, cutting fossil fuel consumption by two thirds and slashing CO2 emissions compared to standard engines.
The bus is classed as a hybrid, rechargeable electric vehicle. Thanks to its on-board GPS system, it can run on pure, zero-emission electricity within a given perimeter.
Under the regulations of the Energy Transition Law, it is classified as a clean vehicle.