When an engine has good combustion (proper compression and volumetric efficiency, proper spark timing and delivery, and a stoichiometric air-fuel ratio), which level of gas emissions should be high? A) CO emissions B) CO₂ emissions C) O₂ emissions D) NO_X emissions

Question

Quizplus · Accepted Answer

When an engine has good combustion, it means that the fuel is being burned efficiently, resulting in minimal harmful emissions. However, CO2 (carbon dioxide) emissions will be high because CO2 is a natural byproduct of the complete combustion of hydrocarbon fuels. CO (carbon monoxide) emissions, NOx (nitrogen oxides) emissions, and other pollutants would be low in a well-functioning engine due to the efficient use of fuel and air, and proper catalytic converter function.

When an Engine Has Good Combustion (Proper Compression and Volumetric