These included spoilers and side panels for optimising aerodynamics, lightweight construction in the form of aluminium parts for the compressed-air tank, rims and diesel tank, retarder installed as standard, air compressor controlled to meet requirements (APM, Air Pressure Management) and optional TPM tyre pressure monitoring for maintaining optimal tyre pressure.
To clearly demonstrate the fuel-saving potential, MAN performed a consumption tour with an MAN TGX 18.500 4×2 BLS EfficientLine 3 semi-trailer tractor in July. The basis for comparison was provided by the truck’s predecessor model – an MAN TGX 18.480 4×2 BLS EfficientLine 2 – which travelled with it along the same route.
The efficiency of the EfficientCruise – the latest generation anticipational cruise control – was demonstrated in particular on the topographically challenging sections of the route. The EfficientRoll freewheeling gearbox function came into effect on gentle inclines or slightly undulating route sections. The reworking of the new D26 CommonRail engine and the driveline redesigned for this with TipMatic gearbox 12+2 27 DD Profi and axle transmission ratio of i = 2.53 also played their part in reducing fuel consumption. On the basis of their trials over the course of the continued development of the driveline, the technicians at MAN had anticipated a fuel saving of at least five percent on this rout.
But even this positive estimation turned out to be too conservative on the consumption tour. According to the in-depth analysis of the measurement report provided by TÜV SÜD, the actual difference in fuel consumption between the EfficientLine 3 and EfficientLine 2 was 6.35%.