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02/07/2012
DAF LAUNCHES ITS CONSUMPTION-CUTTERS

TRUCK WORLD

They are the ATe versions of the CF 85 and XF 105: new engine, 85 km/h top speed, and aerodynamics that limit diesel consumption by 2-3%. Until the Euro 6 standard comes into force, it will be equipped with an innovative common rail technology.

Fabio Quinto

FIRST THERE WERE RENAULT TRUCKS, Man, Iveco and Mercedes-Benz and now there’s Daf. The Dutch manufacturer has launched its consumption-cutter trucks. Not that the CF or XF 105 did badly, on the contrary. Their particularly parsimonious consumption made Daf tractors the most popular in the European Union in 2011. But now the Dutch have picked up the gauntlet thrown down by other makes of consumption-cutters and have launched two special versions of the CF 85 and XF 105 in the ATe (Advanced Transport Efficiency) versions. It is the main new technical development that Daf will launch this year while waiting for the Euro 6 standard about which, as we will see, there is already some advance information. But let’s start with the main characteristics of the new CF 85 and XF 105.

To begin with, aerodynamics: the ATe versions are equipped as standard with a package complete with roof spoiler and side skirts combined with side fenders. As we saw in previous numbers of Pneurama, this is to ensure maximum aerodynamic continuity between the tractor and the trailer. For the same reason, the Space Cab has been chosen because it is 40 cm lower than the Super Space. Second point: tyres with low rolling resistance in the 315/70 R 22.5 size, the purpose of which is to lower the height of the vehicle and further decrease air resistance.

The other feature is the direct driveline with a 2.69:1 reduction for optimum fuel efficiency. Also available as an option is a version with a 2.53:1 reduction for lighter uses and applications or on the flat.

Both vehicles are equipped with a 12.9 litre, 460 HP Paccar MX engine. It complies with EEV emission standards, which means 33% less particulate than the Euro 5 engines. This has been achieved without an anti-particulate filter with a consequent saving of about 30 kg in weight and more space on the chassis. A series of fuel-saving innovations has also been packed into the engine: specifically, new pistons and a fully encapsulated exhaust manifold unit which alone will reduce consumption by 3%. Also, the engine is switched off automatically when it has been idling for five minutes.  Like Iveco, Man and Renault Trucks, the Dutch company has also decided to  limit maximum speed to 85 km/h. Of the other technical developments, deserving of mention is the new and 375 kg lighter SR1360T tandem axle for 6x4 and 8x4 models. But, in the end, when it comes to reducing fuel consumption what makes the difference  – just for a change – is the driver. This is why the display in the centre of the dashboard of the CF 85 and the XF 105 ATe provides information about current and cumulative fuel consumption. Not only: as a safety measure, Daf has fitted the vehicles with Adaptive Cruise Control as standard. The device automatically keeps the truck at a safe distance from the vehicle in front. 

Daf declares that all these measures reduce fuel consumption by 2 to 3%. Added to these are the benefits that can be derived from EcoDrive, courses on economical driving proposed at the time of purchase and which further reduce fuel consumption by an average of 3-5%.

In the meantime, Daf has also announced the launch of the new Paccar MX-13 Euro 6. Just like the other “seven sisters”, with the exception of Iveco, it combines a SCR technology with exhaust gas recirculation and a soot filter. The engine uses common rail technology, a turbo with variable geometry, and advanced controls for maximum efficiency (function integration, encapsulated cabling, advanced management systems). In particular, the new engine’s common rail system permits very high injection pressures of up to 2,500 bar with the use of pre-injection or post-injection or a combination of both. This reflects in finer soot and greater optimization of combustion aimed at reducing noise and emissions and giving the lowest possible fuel consumption. Daf’s 410, 460 and 510 HP Euro 6 engines will go into production at the beginning of 2013.

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