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Airing their views
Page 18
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The fifth annual Diesel Emissions Conference and AdBlue Forum rolled into Brussels, with a strong focus on today's emissions challenges, as well, as future technologies being used to meet Euro-6.
an Tonk;:
THE ANNUAL DIESEL Emissions Conference and AdBlue Forum sought to address the key issues affecting Europe's diesel emissions market, and the increasing role SCR will play in meeting Euro-6 targets.
Following Euro-5's introduction at the end of October 2009, the next stage in the strict emissions standards for trucks comes into force on I January 2014 — nine months earlier than planned:Me manufacturers face a race against time to design, test and implement new technologies in order to meet these strict limits
Advanced efficiency
Opening the conference was Ivan Hodac. general secretary of the European Automobile Manufacturers Association (ACEA) who said Euro-6 would not just be purely about reducing emissions but an "advancement in engine durability and efficiency': After Hodac's address, Scania announced it will use both Select Catalytic Reduction (SCR) and Exhaust Gas Recirculation (EGR) in its next-generation powerplants in order to reduce nitrogen oxide and particulate matter levels Senior vice-president of powertrain development at Scania, Jonas Hofstedt, said that all manufacturers would have to use some level of SCR in their upcoming trucks to comply with Euro-6.
Hofstedt also said that with EGR and SCR in operation, there was no need to use a closed wall-flow diesel particulate filter because the "EGR system targets emissions at the source, while SCR cleans any residual emissions particles':
Scania's future powertrains will also feature higher injection pressures as well as a pre-mix chamber for -optimised combustion':
However, the emissions reductions come at a price because with all the extra kit on board it is estimated trucks will consume 4% more fuel. Not good news for hauliers battling to survive an economic downturn.
Pre-buying spree If manufacturers fail to negate the Eur06 fuel penalty, experts say it could lead to a widespread pre-buying spree of Euro
5 trucks. Industry analysts Integer Research point to the US, where introduction of stricter EPA emissions legislation in 2002 triggered a pre-buying spree.
Bruno Chazalette, director of strategic planning at Renault Trucks, says: "I don't foresee customers pre-buying Euro-5 trucks because it requires such a big capital commitment and it also doesn't make good business sense to have trucks parked up sitting idle."
Despite the threat of higher fuel consumption, truck manufacturers are confident of striking a balance between emissions and economy. Chazalette adds: All the OEMs can achieve Euro 6 without the fuel penalties and we will make Euro-6 engines as fuel efficient, if not more fuel efficient, as Euro-5s But they will certainly be more expensive."
With SCR technology set to be used by all manufacturers, the need for AdBlue is set to rise, but the current infrastructure and the quality of the product continues to be a cause for concern. NI