Volvo V90 TWIN ENGINE Owner's Manual page 472

STARTING AND DRIVING
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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 provides energy for elec-
tric operation as well as for temporarily oper-
ating the electric air conditioning during the
preconditioning of the passenger compart-
ment.
Internal combustion engine - The internal
combustion engine starts when the energy
level in the hybrid battery is insufficient for
the engine power that the driver requests.
4
High voltage generator
battery. Starter motor for the internal com-
bustion engine. Can support the internal
CISG (Crank Integrated Starter Generator) - Combined high-voltage generator and starter motor.
4
470
combustion engine with extra electrical
energy.
Electric motor - Powers the car in electric
operation. If necessary, provides extra torque
and power during acceleration. Provides
electrical all-wheel drive functionality. Recy-
cles brake energy to electrical energy.
Related information
General information about Twin Engine
•
(p. 428)
Starting and stopping the combustion engine
•
in Twin Engine (p. 470)
Drive modes (p. 471)
•
Gearbox (p. 464)
•
Factors that affect range when running on
•
electricity (p. 481)
- Charges the hybrid
Starting and stopping the
combustion engine in Twin Engine
An advanced control system determines the
extent to which the car is driven on internal com-
bustion engine, electric motor or both in parallel.
During electric operation, the car may some-
times need to start the internal combustion
engine automatically due to external circumstan-
ces, e.g. in low outside temperatures, which is
completely normal. In addition, the internal com-
bustion engine always starts when the hybrid
battery reaches its lowest state of charge.
Climate settings at low temperatures
In low outside temperatures, the internal combus-
tion engine sometimes starts automatically in
order to achieve the desired passenger compart-
ment 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
reduced and affect how often the internal com-
bustion engine is started automatically.