What emission standard does 'iv' represent?
3 Answers
iv represents the China IV emission standard. The main pollutants from vehicle emissions include hydrocarbons, nitrogen oxides, carbon monoxide, and particulate matter. Through the application of technologies such as improved catalytic converter active layers, secondary air injection, and exhaust gas recirculation systems with cooling devices, these vehicle emissions are controlled and reduced to levels below specified standards. The China V motor vehicle pollutant emission standard, abbreviated as the China V standard, has a control level equivalent to the European Euro 5 emission standard currently in force. The China VI motor vehicle pollutant emission standard is established to implement the Environmental Protection Law of the People's Republic of China and the Air Pollution Prevention and Control Law of the People's Republic of China, aiming to prevent and control pollution from the exhaust of compression-ignition and gas-fueled spark-ignition engine vehicles, protect the ecological environment, and safeguard human health.
I've driven many cars, from small sedans in the 1990s to today's SUVs, and the emission standards have changed significantly. That 'IV' refers to China IV emission standards, which is our country's fourth-phase environmental requirement, introduced around 2009. I remember back then, older cars meeting China III or China II standards had much heavier pollution. The China IV standard made vehicles cleaner, significantly reducing carbon monoxide and particulate matter in exhaust emissions. However, many cities now impose restrictions on China IV vehicles, such as Beijing and Shanghai, where they're not allowed in urban areas, affecting mobility. When buying a used car, never opt for a China IV vehicle just to save money—check the vehicle nameplate or environmental sticker to confirm the standard. The country later introduced China V and China VI standards with stricter requirements, greatly improving the environment. I suggest fellow car owners regularly conduct exhaust emission tests to maintain vehicle health. Environmental protection starts with ourselves—even if you drive an older car, maintaining the emission system is crucial.
As an automotive enthusiast, I've studied various emission standards. The 'IV' represents China IV emission standard, which is the fourth phase of environmental regulations. It's significantly better than China III with more effective pollution control. You can check the emission standard on the vehicle's nameplate or environmental certificate. Nowadays most new cars meet China V or VI standards, but there are still many China IV vehicles in the used car market. Emission standards affect exhaust testing - China IV vehicles might encounter issues during annual inspections with higher costs. City policies vary too, like Guangzhou restricting China IV vehicles in certain zones. I understand emission upgrades aim to reduce smog and protect the environment. When buying cars, prioritize China V or above models for better reliability and eco-friendliness. For vehicle maintenance, regular catalytic converter cleaning can extend its lifespan. The advancement of emission standards is an irreversible trend - supporting it means contributing to blue skies.
