What is the equivalent of Euro III emission standard in China?
1 Answers
Automotive Euro III is equivalent to China's National III emission standard. Below is an introduction to the National III emission standard: 1. The National III standard is China's third-stage vehicle emission standard, which is equivalent to the Euro III emission standard in terms of tailpipe pollutant levels. The key difference is that new vehicles must be equipped with an OBD (On-Board Diagnostics) system. 2. The characteristic of the OBD system lies in the increased number of detection points and detection systems. Oxygen sensors are installed at both the inlet and outlet of the three-way catalytic converter, ensuring compliance through real-time monitoring of vehicle emissions, thereby better guaranteeing the implementation of the Euro III emission standard. 3. When vehicle emissions fail to meet the Euro III standard due to factors like fuel quality, implementing the National III standard will increase the cost per vehicle. To stably meet the National III emission standards, vehicles must be equipped with technical measures that ensure pollutant emissions meet the National III standard, along with using fuel that meets the Euro III standard. 4. There is not much difference between National III and Euro III standards; they are essentially equivalent with only minor adjustments in certain aspects. In China, segmented measurement of exhaust emissions is adopted, measuring under two conditions: 2540 and 5040, whereas abroad, instantaneous engine operating conditions are measured.
