What Does Exhaust Emission Exceedance Mean?
2 Answers
Exhaust emission exceedance refers to the situation where a vehicle's exhaust emissions exceed the prescribed standards. The causes of exhaust emission exceedance include: 1. Frequent city driving leading to excessive carbon buildup in the engine; 2. Use of low-quality gasoline; 3. Wear and tear of engine components. Solutions for exhaust emission exceedance are: 1. Cleaning the three-way catalytic converter and oxygen sensor; 2. Cleaning or replacing spark plugs; 3. Performing a deep cleaning of the engine interior. Automobile exhaust refers to the waste gases produced during vehicle operation, containing various compounds, with pollutants including solid suspended particles, carbon monoxide, carbon dioxide, hydrocarbons, nitrogen oxides, lead, and sulfur oxides.
A few days ago, I was told at the DMV during my annual inspection that my vehicle's emissions exceeded the limit, which was really annoying. Simply put, excessive emissions mean the car is releasing too many harmful gases like carbon monoxide, exceeding national standards. There are various reasons: in my case, it was due to an aging engine causing incomplete combustion, but it could also be a clogged catalytic converter or poor-quality gasoline leading to severe carbon buildup. Exceeding the limit not only fails the inspection and results in fines but also increases fuel consumption, reduces engine power, and causes black smoke. Later, I took it to a repair shop, where they found a faulty oxygen sensor. Replacing it for 300 yuan fixed the issue. I recommend regular maintenance, cleaning engine components every six months, and using high-quality fuel to avoid impurities—it saves money and is eco-friendly.
