What is the V-number for China 4 vehicles?

1 Answers
OCorey
07/30/25 5:36am
China 4 vehicles refer to the China IV emission standard. Below is a partial introduction about the China 4 emission standard: 1. Introduction: The China 4 emission standard is the national fourth-stage motor vehicle pollutant emission standard. 2. Automobile emission pollutants: Mainly include HC (hydrocarbons), NOx (nitrogen oxides), CO (carbon monoxide), PM (particulate matter), etc. 3. Purpose: By applying technologies such as improved catalytic converter active layers, secondary air injection, and exhaust gas recirculation systems with cooling devices, the standard aims to control and reduce automobile emission pollutants to below specified levels.
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