With a revolutionary technology that disengages and lifts the second drive axle, it is a solution suitable for transport operations that travel on little or no load. With the axle lifter operated, the second drive axle of the 6×4 truck is deactivated and the wheels are lifted, reducing drag, mechanical losses and diesel consumption. This device allows the driver to have two axles with the truck loaded, it is a solution that provides better maneuverability and more comfort when the vehicle is low load or empty.
When driving the system, the vehicle changes from a 6×4 to 4×2 configuration. Driving with the second driven axle saves up to 4% fuel and it is a very important if we take into account that diesel often represents up to 50% of the cost of transportation.
The technology guarantees a reduction in the operational cost of the carrier. Driving with the second raised drive axle reduces the turning radius by as much as 15%, so there is less tire wear and suspension systems. It is a very useful solution for maneuvers in confined spaces for the reason that it provides more agility for the driver and productivity in the operation. When it is activated, the system also reduces noise and vibrations. It is an intelligent and innovative solution that Volvo has launched to offer lower fuel consumption and more comfort in transportation operations of the lifted trucks.
Another advantage is that, on slippery surfaces, the driver can, by simply pressing a key on the board, perform a load transfer procedure for the first drive shaft, which results in greater grip, thus, reducing the risks of operation. In addition, the carrier can reduce other expenses, when the vehicle passes empty at the toll stations where they do not charge the rate with the axle raised of the lifted truck.
Although it is an innovative and sophisticated technology for the lifted trucks, the operation of the system is simple. By means of a splined coupling between shafts, the second shaft can be disengaged and lifted and there are only two buttons strategically located on the dashboard. In the automatic position, a sophisticated electronic system prevents this lifted truck from traveling with load with the raised axle. At the same time, it ensures the automatic lifting of the last axle when the vehicle is empty. The lift is 14 cm, the same height is lifted with a 6×2 truck with axle with a similar device. The 6×4 with lift axle is a solution optimized for transport when the load factor is approximately 50% such as transport applications for wood, tanks and even cereals.