engineering first in Frankfurt where Audi is premiering its first hybrid
vehicle powered by an FSI direct-injection petrol engine. The Audi Q7
hybrid concept study is equipped with a 4.2-litre FSI V8 drive unit
developing 257 kW (350 bhp) and 440 Newton metres of torque. An electric
motor that has also been integrated into the driveline adds up to an
extra 200 Nm of torque.
the bonnet of the Audi Q7 hybrid is first opened, there are no immediate
visible signs of its hybrid nature. The 4.2-litre eight-cylinder power
unit takes up the entire engine compartment, with no trace of either an
electric motor or a battery.
electric motor draws its energy from a battery system housed beneath the
luggage compartment floor at the rear of the vehicle. A voltage
transducer that supplies power to the vehicle's electrical system can
also be found here. When measured against earlier generations of hybrid
vehicles, the electric motor and nickel-metal hydride (NiMH) battery are
veritable lightweights, with the Q7 hybrid only weighing in at 140
kilograms more than the standard-production model.
are basically three different operating states: either the vehicle is
driven by the combustion engine or electric motor alone, or the two
power sources unite together to accelerate the vehicle. The
electric motor is capable of propelling the vehicle at speeds of up to
30 km/h and assumes the role of the starter-alternator unit, resulting
in a quiet, smooth and extra-quick starting process.