What is the China Emission Standard Level for 'LV'?
2 Answers
Automobile emission standard 'LV' corresponds to China IV emission standard. The differences between China IV and China V are: 1. Different sulfur content limits in gasoline: China IV sets the upper limit of sulfur content in gasoline at 50 milligrams per kilogram; China V sets it at 10 milligrams per kilogram. 2. Different nitrogen oxide emission standards: China IV's nitrogen oxide emission standard is 0.08 milligrams per cubic meter; China V's is 0.06 milligrams per cubic meter. China IV and China V refer to different phases of national emission standards. A higher number in the emission standard indicates a higher level, and a higher level means lower engine emissions.
When you mentioned LV in automotive emission standards, it actually refers to what we commonly call China 6 standard. I remember this regulation was implemented starting from 2019, divided into two phases: China 6a and China 6b. Back in the China 5 era, the requirements for pollutants weren't as strict, but the China 6 standard is way more stringent, especially with the emission limits for nitrogen oxides and particulate matter being nearly halved. To meet the standards, manufacturers generally installed more complex devices in the exhaust systems, like particulate filters and high-efficiency three-way catalytic converters. If you notice your car's power dropping or fuel consumption increasing, it's probably these devices causing trouble. Another catch with China 6 is that you have to use cleaner gasoline, otherwise the sensors will throw fault codes, leaving you confused. Overall, China 6 is good for the environment, but it definitely makes car maintenance more troublesome.
