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What are the exhaust emission standards for vehicle environmental protection testing?

1 Answers

_travis

07/25/25 1:07am

Vehicle environmental protection exhaust emission testing standards are as follows: the limit for carbon monoxide is 6.3g/km, and the total limit for hydrocarbons and nitrogen oxides is 2.0g/km. Vehicle exhaust emission testing is based on whether the smoke opacity value meets the standard, and whether the emissions meet the standard is mainly determined by vehicle testing data, confirming compliance based on the smoke opacity value. Vehicle environmental protection exhaust emission standards: 1. Smoke opacity value compliance: Vehicle exhaust emission testing is based on whether the smoke opacity value meets the standard, and whether the emissions meet the standard is mainly determined by vehicle testing data, confirming compliance based on the smoke opacity value. 2. Annual inspection for passenger cars: Exhaust emissions are tested during the annual inspection. After the vehicle undergoes the annual inspection, the first test conducted is to check whether the exhaust emissions meet environmental protection standards; however, if the exhaust emission values do not meet the standard, the annual inspection will not pass. It is recommended to first test at a familiar auto repair shop before proceeding with the annual inspection. The standard values vary depending on the vehicle model, total vehicle weight, year of manufacture, and fuel type. 3. Vehicle environmental protection exhaust emission testing standards: The limit for carbon monoxide is 6.3g/km, and the total limit for hydrocarbons and nitrogen oxides is 2.0g/km.

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