What is the function of the selective catalytic reduction system?
A) Reduce oxides of nitrogen to oxygen and nitrogen.
B) Reduce ozone to atmospheric oxygen.
C) Reduce carbon monoxides to carbon dioxide.
D) Reduce particulate matter into ash.

Question

Quizplus · Accepted Answer

The selective catalytic reduction (SCR) system is used in diesel engines to reduce emissions of oxides of nitrogen (NOx) by converting them into harmless nitrogen gas (N2) and water (H2O) through the use of a catalyst and a reducing agent, typically ammonia or urea.

What Is the Function of the Selective Catalytic Reduction System