Volvo XC90 Recharge Owner's Manual page 491

Hybrid battery - The function of the hybrid
battery is to store energy. It receives
energy when charging from the mains
power circuit, during regenerative braking
or from the high-voltage generator. It pro-
vides energy for electric operation as well
as for temporarily operating the electric air
conditioning during the preconditioning of
the passenger compartment.
Internal combustion engine - The internal
combustion engine starts when the
energy level in the hybrid battery is insuffi-
cient for the engine power that the driver
requests.
7
High voltage generator - Charges the
hybrid battery. Starter motor for the inter-
nal combustion engine. Can support the
7 CISG (Crank Integrated Starter Generator) - Combined high-voltage generator and starter motor.
internal combustion engine with extra
electrical energy.
Electric motor - Powers the car in electric
operation. If necessary, provides extra tor-
que and power during acceleration. Pro-
vides electrical all-wheel drive functional-
ity. Recycles brake energy to electrical
energy.
Related information
General information on electric drive
•
(p. 446)
Starting and stopping the combustion
•
engine (p. 489)
Drive modes (p. 490)
•
Gearbox (p. 482)
•
STARTING AND DRIVING
Starting and stopping the
combustion engine
An advanced control system determines the
extent to which the car is driven on internal
combustion engine, electric motor or both in
parallel. During electric operation, the car
may sometimes need to start the internal
combustion engine automatically due to
external circumstances, e.g. in low outside
temperatures, which is completely normal. In
addition, the internal combustion engine
always starts when the hybrid battery rea-
ches its lowest state of charge.
Climate settings at low temperatures
In low outside temperatures, the internal com-
bustion engine sometimes starts automatically
in order to achieve the desired passenger
compartment temperature and air quality. The
amount of time that the internal combustion
engine runs can be affected by
lowering the temperature
•
reducing the fan strength
•
activating drive mode Pure
•
Electric operation in low or high
temperatures
In low or high outside temperatures, the car's
range and output for electric operation may be
.
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489