In addition to its aerodynamic and rolling
resistance improvements, this heavy-duty semi concept from Volvo Trucks is
currently testing out a hybrid powertrain for long haul applications.
The powertrain works by recovering energy either
when braking, or when driving downhill on slopes steeper than 1%. The energy is
then stored in the batteries and used to power the truck in "electric
mode" on flat roads and low gradients.
Volvo's own I-See driver support system
has been developed specifically for this hybrid powertrain, so that it can
analyze upcoming topography and calculate the most economical and efficient
means of propulsion - be it diesel or electric.
According to Volvo, the hybrid powertrain should
allow the combustion engine to be shut off for up to 30% of the driving time on
long journeys, thus saving between 5-10% in fuel. As for its full-electric
driving range, the vehicle can operate with zero emissions and low noise for up
to 10 km.
