Integrated approach reduces CO₂ emissions by up to 14%

USING TECHNOLOGIES available on the market, the fuel consumption, and therefore the CO₂ emissions, of modern truck combinations can be reduced by a double-digit percentage.

This was the finding of a field test, the results of which were presented in Berlin by Daimler Trucks together with the project participants. These results from field test with the name Efficiency Run will be of great significance in the future for achieving CO₂ targets for road freight transport.

This is because the Efficiency Run has demonstrated that fuel consumption, and therefore also CO₂ emissions, can be significantly reduced, also at a lower cost, if optimisation efforts focus not just on the engine of the tractor unit, but on the vehicle as a whole. Additional significant CO₂ reductions, which could add up from factors like specific fuels, fleet operations or driver trainings, have not yet been considered in this field test.

The series of tests was conducted by Daimler Trucks in cooperation with the leading German logistics companies DB Schenker Logistics, Grosse-Vehne and Elflein. This involved genuine freight being driven on genuine routes under realistic conditions. The tests were supervised in detail by the DEKRA testing organisation, which laid down the test conditions, carried out the measurements and evaluated the results.

One of the key results, involving two Mercedes-Benz Actros standard semi-trailer combinations that were optimised for the Efficiency Run each consumed around 12 to 14 percent less fuel than standard semi-trailer combinations of the respective transport companies based on their fleets in 2014.

The Efficiency Run also investigated the potential of the long combination vehicle, once again with a clear result. In the test, the standard long combination vehicle showed a reduction in consumption of around 17 percent compared with the standard semi-trailer combination used in volume-based transport.

Expectations clearly exceeded

“We have proven, if we want to significantly further reduce both fuel consumption and CO₂ emissions, we need to look beyond just the engine. We must widen our focus to include tyres, semitrailer and other key components. This is the only way in which we can achieve our objective in an affordable manner,” stated Dr Wolfgang Bernhard, member of the Board of Management of Daimler AG responsible for Daimler Trucks & Buses.

“Our test also confirms the formula that two Long Combination Vehicles have the same transport capacity as three conventional semi-trailer combinations, with significantly higher efficiency and lower impact on the environment,” said Dr Bernhard.

Stefan Buchner, Head of Mercedes-Benz Trucks, says, “Our aim is to ensure that customers who buy a Mercedes-Benz Actros have the most efficient vehicle in its class. So, naturally, we were especially keen to see how much more optimisation is possible on the vehicle as a whole. Reductions of up to 14 percent on the standard semi-trailer combination clearly exceeded our expectations.”

CO₂ reduction as a task for the entire industry

European commercial-vehicle manufacturers have already achieved a great deal on the CO₂ front, for example, fuel consumption per tonne-kilometre has been reduced by around 60 percent since 1965 and, over the same period, six exhaust emissions standards have been put into practice. This demonstrates that the most effective regulator for a commercial-vehicle manufacturer is the customer. With fuel costs making up almost one-third of the total cost of ownership, customers are constantly calling for fuel consumption to be minimised. Daimler Trucks has always made every effort to supply customers with vehicles that are as efficient as possible.

All commercial-vehicle manufacturers are currently confronted with new CO₂ targets for road freight transport. Thus, the EU intends to achieve a CO₂ reduction of 30 percent by 2030 (compared with 2005). For Germany, a reduction of even 40 percent is under discussion. Against this backdrop, it is necessary to adopt new approaches, because it is no longer enough to focus exclusively on the tractor unit. To be able in future to achieve even more significant, yet affordable, reductions in CO₂ emissions, politicians and the transport industry must join forces and adopt an integrated approach.

‘Integrated approach’ must take account of all factors

The goal, therefore, is to adopt an integrated approach in which all the actors involved in road freight transport take part in achieving the targets: commercial-vehicle manufacturers, body and tyre suppliers, logistics companies and, last but not least, politicians. Daimler Trucks presented this concept together with other European manufacturers at the 2014 IAA for Commercial Vehicles.

The objective of the integrated approach is to optimise the entire truck and transport system.

In addition to the tractor unit, consideration is given also to the semitrailer (weights and dimensions, air resistance, lightweight design), tyres (rolling resistance, air pressure, single tyres) and fuel (biofuel, natural gas). Yet the integrated approach also attaches importance to vehicle operation (driver training, cargo pooling), infrastructure and the issue of fleet renewal. The Efficiency Run has now demonstrated that the integrated approach works in real-world practice.