Question

nccer 22103-12 - identification of heavy equipment 56min what product is injected into a diesel engines exhaust system to reduce nox? ∘ fresh exhaust cleaning fluid ∘ alcohol ∘ diesel exhaust fluid (def) ∘ distilled water

Explanation:

To reduce NOₓ (nitrogen oxides) in a diesel engine's exhaust system, Diesel Exhaust Fluid (DEF) is used. DEF (typically a mixture of urea and deionized water) reacts with NOₓ in the exhaust to convert it into nitrogen and water vapor. "Fresh exhaust cleaning fluid" is not a standard term, alcohol is not used for this purpose, and distilled water alone doesn't reduce NOₓ effectively for this application.

Answer:

C. Diesel exhaust fluid (DEF)