24
Hybrid system
The electronic power super visor - 4automatically manages the operation of the two power units(Diesel and electric) to provide the lowest consumption.
An inver ter and a transformer are needed to manage the electric power.
The inver ter acts on the torque of the electric motor, by regulating the current coming from the high
voltage battery pack. Its operating range is between 150 and 270 volts.
The trans
former conver ts the 200 V of the battery pack to 12 V, to power the vehicle's ancillary
systems.
Th
e Stop & Star t system - 5
allows the Diesel engine to be put into standby during stops (traffic
lights, a stop, or in a traffic jam, for example) or during phases of running in all-electric mode.
The stopping and restar ting of the Diesel engine is done in a way that is instantaneous and
transparent for the driver.
Th
e electronic gearbox - 6provides, in automatic mode, significant savings in fuel consumption compared to a conventional manual gearbox, thanks to its electronic control system.
It also offers improved driving pleasure with the possibility at any time of choosing the gear changing mode: automatic or manual, using the paddles located behind the steering wheel.
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37
Hybrid system
Reducing consumption - Fuel
QuestionAnswer
How can I optimise m
y fuel consumption? Give preference to Auto mode as it selects in the best way the "driving energy source" to
use in order to reduce fuel consumption.
You should also adapt your driving style to the special features of hybrid vehicles to get the
best out of it, for example by taking your foot off the accelerator pedal rather than braking and by anticipating decelerations (entering a built-up area, stop at traffic lights, stop at halt
signs, ...).
Wh
y do I not manage to reduce my fuel consumptioneven though I often drive in ZEV (Zero EmissionsVehicle) mode? It is not ZEV mode but Auto mode that is the most appropriate for reducin
g fuelconsumption, as it selects the best "driving energy source".
ZEV mode (10 0% electric operation) can reduce fuel consumption in some cases. However,recharging the traction battery has an energy cost.
This is why we recommend using Auto mode more often.
Wh
y does the trip computer sometimes display the
bars for 28 mpg (10 litres) consumption in town?The current fuel consumption displayed may appear high when the distance covered is
very low, but this generally has very little impact and the true average fuel consumption willremain low.
In town, your hybrid retains very good fuel economy (of the order of 35% better than a non-hybrid vehicle).
Wh
y is my battery rarely fully charged? A par tly charged battery is normal operation (4 to 5 bars on average in Auto mode).
This allows some capacity to be left free for the recovery for energy when going downhill or
taking when your foot off the accelerator.
Wh
y are there so may fuel aler t messages whenstarting to use the reser ve?To e n c o u r age you to refuel as soon as possible and avoid the loss of hybrid functions.
