Volvo XC90 Twin Engine 2019, Owner'S Manual

Page: 466 / 700

STARTING AND DRIVING
464
All-wheel drive
All-wheel drive (AWD
6
) means that the car is
driving all four wheels at the same time, which
improves traction.
The electric motor that drives the rear wheels
enables electric all-wheel drive functionality. All-
wheel drive characteristics vary depending on the
selected drive mode.
Related information
•
Drive modes (p. 466)
•
Low speed control (p. 475)
•
Gearbox (p. 458)
Drive systems
Volvo's Twin Engine combines an internal com-
bustion engine that drives the front wheels with
an electric motor that drives the rear wheels.
Two drive systems
Depending on the driver-selected drive mode and
available electric energy, the two drive systems
can be used either individually or in parallel.
The electric motor is supplied its energy from a
hybrid battery fitted in the tunnel console. The
hybrid battery can be charged in a wall socket, or
in a special charging station. The internal com-
bustion engine can also charge the hybrid battery
with a special high-voltage generator.
Both the internal combustion engine and electric
motor can generate motive force directly to the
wheels. An advanced control system combines
the properties of both drive systems in order to
provide optimum driving economy.
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.
High voltage generator
7
- Charges the hybrid
battery. Starter motor for the internal com-
bustion engine. Can support the internal
6
All Wheel Drive
7 CISG (Crank Integrated Starter Generator) - Combined high-voltage generator and starter motor.