What are the acceptable values for exhaust emission testing?
1 Answers
Automotive environmental exhaust emission testing standards set the limit for carbon monoxide at 6.3g/km, and the combined limit for hydrocarbons and nitrogen oxides at 2.0g/km. Below are the specific details regarding exhaust emission testing: 1. Testing Basis: Automotive exhaust emission testing is based on whether the smoke opacity value meets the standards, and whether emissions comply is primarily determined by vehicle testing data, with the smoke opacity value confirming compliance. 2. Inspection Authorities: Vehicle exhaust inspections are conducted jointly by environmental protection administrative departments and public traffic management departments for law enforcement. Traffic police are responsible for directing, intercepting vehicles, and handling non-compliant vehicles, while environmental personnel are responsible for monitoring, and law enforcement officers explain the situation to the relevant parties on the spot. 3. Standard Values: The standard values vary depending on the vehicle type, total vehicle weight, manufacturing year, and fuel type.