How to Deal with Excessive NO Emissions?

1 Answers
MacHarmony
07/29/25 12:10pm
Excessive NO emissions can be addressed by: first inspecting the three-way catalytic converter to ensure it is functioning properly, then checking if the EGR valve is stuck. NO refers to nitrogen oxides, and the reasons for excessive emissions are: 1. The air-fuel mixture in the engine combustion chamber is too rich, usually caused by incomplete combustion; 2. Severe carbon buildup, primarily in areas such as the intake system and engine combustion chamber; 3. The combustion chamber temperature is too high, and there is an excess of oxygen. As one of the primary sources of air pollution, vehicle exhaust contains a large amount of harmful substances, including carbon monoxide, nitrogen oxides, hydrocarbons, and solid suspended particles. PM2.5, which has become a major social concern, falls under the category of solid suspended particles.
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