What is the emission standard for motorcycles?
2 Answers
Motorcycle emission standards should comply with the China IV emission standard. Below is a relevant introduction to the China IV emission standard: Introduction: The China IV emission standard is the national fourth-stage motor vehicle pollutant emission standard. The main pollutants emitted by vehicles include HC (hydrocarbons), NOx (nitrogen oxides), CO (carbon monoxide), PM (particulate matter), etc. Through the application of 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 vehicle emissions to below specified limits. Standard values: The emission limit for hydrocarbons is below 0.1 grams per kilometer, for carbon monoxide below 1.0 grams per kilometer, for nitrogen oxides below 0.08 grams per kilometer, with no requirements for particulate matter.
I've been riding motorcycles for several years. The emission standards for motorcycles mainly depend on where you buy them. Currently, China implements the National IV standard, which was fully rolled out in 2019. Simply put, it requires new motorcycles to be equipped with electronic fuel injection systems, and carbon monoxide emissions must not exceed 1 gram per kilometer. In the previous National III era, carburetor motorcycles were still allowed, with a carbon monoxide limit of 5 grams, causing much more pollution. In fact, National IV motorcycles are more fuel-efficient, last longer with proper maintenance, and their exhaust is less pungent. The EU uses the Euro 5 standard, which is slightly stricter than ours, with a nitrogen oxide limit of 0.06 grams. I heard that China might upgrade to National VI by 2025, which would definitely be good for air quality. When choosing a motorcycle, pay attention to the environmental label and avoid older used models, as they could be restricted from use at any time. Regularly changing air filters and engine oil can also help reduce emissions.
