Swiss Category C Theory (Truck) Practice Questions - Switzerland Driving Theory Test - Category C (Heavy Motor Vehicles) Exam

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What is the primary function of AdBlue (aqueous urea solution / Diesel Exhaust Fluid) in modern Euro 6 heavy diesel engines?

It is mixed directly into the diesel fuel tank to increase engine horsepower It lubricates the transmission gears It is injected into the Selective Catalytic Reduction (SCR) exhaust system to chemically convert toxic nitrogen oxides (NOx) into harmless nitrogen and water vapor It acts as windshield washer fluid during sub-zero temperatures

Correct Answer:

It is injected into the Selective Catalytic Reduction (SCR) exhaust system to chemically convert toxic nitrogen oxides (NOx) into harmless nitrogen and water vapor

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