What is the primary cause of harmful tailpipe emissions?
A) Low quality fuel.
B) Low ignition temperatures.
C) Nitrogen enriched fuel.
D) Imperfect combustion.

Question

Quizplus · Accepted Answer

Imperfect combustion, where not all fuel is burned completely or efficiently, is the primary cause of harmful tailpipe emissions. This leads to the release of pollutants such as carbon monoxide, nitrogen oxides, and particulate matter into the air, which can have negative impacts on human health and the environment. Low quality fuel or nitrogen enriched fuel can contribute to imperfect combustion, but they are not the primary cause. Low ignition temperatures are not relevant to tailpipe emissions.

What Is the Primary Cause of Harmful Tailpipe Emissions