Citroen DS5 HYBRID4 2012 1.G Service Manual

39Hybrid system

POWER zone

Zone which indicates an increased cumulative power demand
from your hybrid vehicle,
taking account of the combined capacities of
the Diesel engine and the electric motor.

View hybrid fl ow information
Hybrid modes
1.
Hybrid mode selected (AUTO, ZEV, SPORT, 4WD).
2.
Messages, e.g.: "Zero Emission" if the Diesel engine is off (0 g/km CO2).


Operation / Energy flows
6.
The Diesel engine supplies the battery (if needed).
7.Arrow from left to right: the battery powers the electric motor (when
the electric motor is operating).
Arrow from right to left: the electric motor/generator recharges the
battery (energy recovery phases).8. The Diesel engine drives the front wheels. 9.The electric motor drives the rear wheels.
Vehicle infrastructure
3.
Diesel engine.4.
Tr a c t i o n b a t t e ry state of charge. 5.
Electric Motor/Generator. Information on the active h
ybrid mode, arrows for energy flows and the state of charge of the battery, is displayed in the instrument panel screen or the screen.

41Hybrid system

Examples of displays


On starting and when stationary

There is no flow of energy (the Stop & Star t system stops and
restar ts the Diesel engine automatically).

Energy recovery

During this phase (deceleration, braking, foot off the
accelerator, … all modes), the battery is recharged by the electric motor/generator, then being driven by the rear wheels.
You can maximise this energy recovery by taking your foot off
the accelerator pedal, deceleration will then be less marked
th
an with a conventional vehicle.

100% electric

In all electric running (AUTO or ZEV modes), only the electric motor, powered by the battery, drives the rear wheels.
The display of "Zero Emission" indicates that the Diesel engine
is off and the vehicle is producing no CO2.

Automatic restarting of the Diesel engine or ZEV mode NOT available

Maintaining the performance of
the system



- When the vehicle exceeds 18 mph(30 km/h) after moving off (if the internal
combustion engine has not already star ted since the vehicle was last star ted).

- If the high voltage battery is not sufficiently charged. A minimum of 4 barsin ZEV mode so as to ensure operationover a cer tain distance (in AUTO, electricoperation is accessible for a shor ter period with a lower level of charge).

- When the fuel level enters the reservezone (where rate of consumption of this reser ve is high, ZEV inhibition may continue for some time after refuelling).

- During regeneration of the particleemissions filter, which occursautomatically for 5 to 10 minutes,approximately every 300 miles (500 kms)(or less in extended urban running).

The internal combustion engine may restar t or
ZEV mode may not be available in the variousconditions presented below. The internal combustion engine can beswitched off automatically as soon as these
conditions are lifted. When the conditions described below causethe vehicle to come out of ZEV mode andthe Diesel engine to restar t, the vehicle automatically changes to AUTO mode.
Your vehicle is fitted with the most effective emissions control systems, in par ticular the Particle Emissions Filter (PEF).
At regular intervals your Diesel engine will produce energy for the self-cleaning of this filter.During this PEF regeneration phase, electric running is purposely made unavailable.
Action by the driver
- Moving the gear selector to position M
. - Action on steering mounted control paddles to change gear.- Sustained and sharp acceleration. - Use of demisting.- Use of air conditioning.


Diffi cult weather conditions and
circumstances



- If cer tain conditions or engine temperature requirements make it necessary (such as
an engine temperature that is too low for the ambient conditions).

- When the battery is close to maximumcharge (for example: when going down a long hill), because engine recoverybeing no longer possible, the internalcombustion engine restar ts automatically just to provide engine braking.

- If the vehicle encounters a steep slope(car park ramp, ...).

- If the vehicle has been parked in the sunfor a prolonged period.

- When driving in mountainous conditions(altitude).

43Hybrid system








ECO OFF switch


This function prevents the Diesel engine
being switched off and so ensures that a comfor table temperature can be maintained in
the passenger compar tment (air conditioning
running continuously).
On pressing the switch, the engine restar ts
immediately.
To return to normal operation, press the switch
a
gain.
After switching off the ignition, the vehicle will
return to normal operation (lamp in the switch
off).
*
Except in ZEV mode, which favours electricrunning over assuring a comfortable
temperature.
During electric running and when the engine is
stopped, the hybrid system manages restarting automatically to assure comfor t levels in thepassenger compartment * .
However, variations in temperature may still
be felt in very hot climates. To avoid any
discomfor t in these conditions you can press
the ECO OFF switch.

Eco-driving
Eco-driving is a range of everyday practices that allow the motorist to optimise their fuel consumption and CO2emissions.
Optimise the use of your
gearbox
Use automated mode A
as much as possible
as this optimises gear changes to suit thecircumstances.

Drive smoothly
Maintain a safe distance between vehicles, use engine braking rather than the brake pedal, and press the accelerator progressively. These practices contribute towards a reduction in fuel consumption and CO2 emissions and also helps reduce the
background traffic noise.
If your vehicle has cruise control, make use of the system at speeds above 25 mph (40 km/h) when the traffic is flowing well.


Before moving off, if the passenger compartment is too warm, ventilate it byopening the windows and air vents before using the air conditioning.
Above 30 mph (50 km/h), close the windows and leave the air vents open.
Remember to make use of equipment that canhelp keep the temperature in the passenger compartment down (sun roof and windowblinds...). Switch off the air conditioning, unless it has automatic digital regulation, as soon as thedesired temperature is attained. Switch off the demisting and defrostingcontrols, if not automatic.
Switch off the heated seat as soon as possible.


Switch off the headlamps and front foglampswhen the level of light does not require their use.

Avoid running the Diesel engine when stationary, par ticularly in winter; your vehicle will warm up much faster while driving.

As a passenger, if you avoid connecting your multimedia devices (film, music, videogame...), you will contribute towards limitingthe consumption of electrical energy, and soof fuel.
Disconnect your por table devices beforeleaving the vehicle.



Control the use of your electrical equipment

45
Hybrid system
Limit the causes of excess
consumption
Spread loads throughout the vehicle; place the heaviest items in the bottom of the boot,as close as possible to the rear seats.Limit the loads carried in the vehicle and reduce wind resistance (roof bars, roof rack, bicycle carrier, trailer...). Use a roof box inpreference.Remove roof bars and roof racks after use.

At the end of winter, remove snow tyres and refit your summer tyres.
Observe the recommendations
on maintenance
Check the tyre pressures regularly, when cold, referring to the label in the door aper ture, driver's side.Carry out this check in par ticular:- before a long journey,- at each change of season,- after a long period out of use.

Have your vehicle ser viced regularly (engine oil, oil filter, air filter...) and obser ve the schedule of operations recommended by the manufacturer.


When refuelling, do not continue after the3 rd
cut-off of the nozzle to avoid any over flow.

At the wheel of your new vehicle, it is only after the first 1 800 miles (3 000 kilometres) that you will see the fuel consumption settledown to a consistent average.

Consumption of your hybrid in the screen

Average consumption over the last 5 minutes.
"60 % H
ybrid Use" corresponds to 60 % of the cumulative running time of the electric motor in the various Modes (Auto, ZEV, Sport or 4WD) and 40 % of the time with the Diesel engine only (with no contribution from the hybrid system).


For more information on the trip computer, refer tothe corresponding section.
Resetting the history

With the hybrid system active, when trip 2 displayed, press
the control for 2 seconds to reset the history to zero.

47Hybrid system








200 V high voltage battery


The 200 V high voltage battery cannot be
recharged from a mains supply.
The battery is Ni-MH (Nickel Metal Hydride)
and is located below the boot floor, close to the electric motor.
Charging
The battery is charged when the vehicle
decelerates, the electric motor then becomes
a generator and conver ts kinetic energy into
electrical energy (except if the speed of the
vehicle is above 70 mph (120 km/h)).
The battery is not recharged from a mains
supply.
The battery may also be charged automatically
when required by the Stop & Start system of
the Diesel engine.
This recover
y allows the use of "free" energy.
The battery charging time is very short and iscontinuous.
A discharged battery (following ZEV running or
high load, for example) will quickly return to astate of charge sufficient for full operation of the
different hybrid modes.
Thecharging takes place automatically
when driving. The energy recovery can be faster during deceleration.
The average state of charge is 4 to 5 bars, so
preserving a margin for energy recovery when
deceleration of going downhill (free energy).
To preser ve the ser vice life of thebattery, the level of charge never falls below 20 %, even if a level of 0 bars is displayed after ZEV running. Where the battery is close to maximum, vehicle deceleration with your foot off the accelerator pedal will be at a lower level.

This system does not work continuously,
but adapts the force of the fan cooling to the requirements of the battery.
Its operation can be heard at the rear, even if
the vehicle is stopped after a run.
If the air intake is blocked, the battery may
overheat, damaging the battery and causing a
loss of performance of the hybrid system.







Fan cooling of the high voltage battery


For the best use of the high voltagebattery, please follow theserecommendations:


- do not obstruct the air intake with loose articles, otherwise, the battery may overheat, causing aloss of performance of the hybridsystem

- do not spill fluids, as this may cause damage to the battery.


The high voltage battery has an air cooling system, comprising an air intake(located on the side of the left hand rear seat) and a fan (located behind the lefthand boot trim panel).