What is the national standard for vehicle exhaust emission testing?
1 Answers
The current testing standard is the Euro IV standard implemented since 2005: HC less than 0.46%, CO less than 1.50%, NOX less than 3.50%, PM less than 0.02%. Below is additional information: 1. China V: The National Fifth Stage Vehicle Pollutant Emission Standard, referred to as the "China V Standard," has an emission control level equivalent to the European Union's currently implemented Stage 5 emission standard. The EU has been enforcing this standard since 2009, which imposes stricter limits on vehicle emissions such as nitrogen oxides, hydrocarbons, carbon monoxide, and suspended particles. From China I to China IV, each upgrade in the standard reduces single-vehicle pollution by 30% to 50%. 2. China VI: The China VIa emission standard stipulates that carbon monoxide emissions must not exceed 700 mg per kilometer, non-methane hydrocarbons must not exceed 68 mg per kilometer, nitrogen oxides must not exceed 60 mg per kilometer, and PM fine particles must not exceed 4.5 mg per kilometer. The China VIb emission standard requires carbon monoxide emissions to not exceed 500 mg per kilometer, non-methane hydrocarbons to not exceed 35 mg per kilometer, nitrogen oxides to not exceed 35 mg per kilometer, and PM fine particles to not exceed 3 mg per kilometer.
