What is the difference between China IV and China V?

[LaMary]

The difference between China IV and China V lies in the different upper limits of sulfur content: 1. The upper limit of sulfur content in China IV standard gasoline is 10mg. 2. The upper limit of sulfur content in China V standard gasoline is 50mg. Additional information: 1. China V has stricter control over nitrogen oxides compared to China IV, with China V stipulating an emission limit of 25%. 2. The China IV emission standard is the national fourth-stage motor vehicle pollutant emission standard. The main pollutants emitted by automobiles include HC, NOx, CO, PM, etc. The application of technologies such as better catalytic converter active layers, secondary air injection, and exhaust gas recirculation systems with cooling devices helps in reducing these emissions.