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Prime Mover Magazine

Truck OEMs worried about SCR manipulation

European truck manufacturers have raised concerns about the influx of aftermarket technology claiming to be able to control exhaust emissions.

Following the introduction of Euro VI emissions standards across the European Union (EU) in 2014, the prevalent technology for trucks to reduce nitrogen oxides (NOx) emission has become Selective Catalytic Reduction (SCR), which requires the controlled dosing of a diesel exhaust fluid called AdBlue.

Speaking on behalf of Europe’s largest truck OEMs, the European Automobile Manufacturers’ Association (ACEA) is now seeing a trend for the use of so-called ‘AdBlue emulator’ devices that claim to be able to by-pass or stop the AdBlue injection system.

“ACEA strongly condemns the advertising, sale and use of any aftermarket device that can be used by truck operators to turn off emission control systems,” said ACEA Secretary General, Erik Jonnaert.

Jonnaert explained that if there is no AdBlue injection, there will be no NOx reduction in the SCR, which saves truck operators the cost of AdBlue refills, albeit at the environmental expense of higher NOx emissions.

“The truck operator may also qualify for lower motorway taxes or other benefits by officially running a Euro VI truck, which in practice will not be operating as it was designed to, because the truck operator chose to fit one of these devices.”

ACEA now calls on the European Commission and member states to ban the advertising and sale of any aftermarket device that can by-pass vehicle emission control systems or enable the removal of important parts of the emission control system.

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