Volvo Trucks is introducing new aerodynamic improvements by transferring a proven concept from the aviation industry to its heavy trucks. Subtle but effective changes to the cab significantly reduce drag, fuel consumption and CO₂ emissions.
The most important innovation is the airflow stabilisers, which are located at the upper corners of the cab next to the windscreen. With a carefully designed pattern of small angled slats, the stabilisers control how the air flows around the corners of the cabin. The airflow stabilisers not only improve the aerodynamics in front of the cab, but also create better conditions for two other improvements: air deflectors that have been extended by 50 mm to reduce the distance between the cab and trailer, and modified chassis panels that allow better alignment with the rear mudguard. These three new features complement each other according to the principle 1 + 1 = 3, i.e. the overall effect is greater than the sum of the individual effects.
The new Volvo FH Aero shows how effectively aerodynamics can contribute to improving the fuel efficiency of a modern truck cab. By extending the cab by 24 cm and making various modifications to reduce drag, the Volvo FH Aero achieves significant fuel savings – especially in the high mileages of a long-haul truck.
‘The time we have spent in simulations and in the wind tunnel has paid off – with these new cab modifications we are building on last year’s major aerodynamic improvements that will benefit our customers,’ says Jan Hjelmgren, Head of Product Management, Volvo Trucks.
“We have taken an unconventional approach and used technology that is normally used in aeroplanes, Formula 1 racing cars and wind turbines. The upper corners of the cabin are extremely critical aerodynamically, and thanks to our new Camera Monitor System (CMS), we have been able to unlock new potential here – by using small louvres to control the airflow on a micro scale, creating a macroscopic effect. These findings will also enable us to introduce further aerodynamic concepts in the future,” explains Anders Tenstam, Senior Technology Expert Aerodynamics at Volvo Trucks.
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