What is the China IV Emission Standard?
2 Answers
National Phase IV Motor Vehicle Pollutant Emission Standard, abbreviated as "China IV Emission Standard". The following is a detailed introduction: 1. Pollutants: The main pollutants emitted by vehicles include HC, NOx, CO, PM, etc. Through the application of technologies such as the active layer of catalytic converters, secondary air injection, and exhaust gas recirculation systems with cooling devices, the standard aims to control and reduce vehicle emissions below specified limits. 2. Implementation timeline of emission standards: China I Standard: Nationwide implementation on July 1, 2001, mainly targeting restrictions on carbon monoxide, hydrocarbons, and particulate emissions. China II Standard: Nationwide implementation on July 1, 2004, requiring a 30% reduction in carbon monoxide and a 55% reduction in hydrocarbons and carbon oxides. China III Standard: Nationwide implementation on July 1, 2007, requiring a 40% reduction in total pollutant emissions compared to China II. China IV Standard: Nationwide implementation on July 1, 2010, requiring a 50% to 60% reduction compared to China III. China V Standard: Nationwide implementation on January 1, 2018, requiring a 25% reduction in nitrogen oxide emissions compared to China IV. China VI Standard: China VIa nationwide implementation on July 1, 2020, and China VIb nationwide implementation on July 1, 2023.
The China IV emission standards represent the fourth stage of China's automotive emission control regulations, primarily targeting the limitation of pollutant levels in exhaust emissions from gasoline and diesel vehicles, such as harmful gases like carbon monoxide and hydrocarbons, with the aim of making the air cleaner. I still remember it was fully implemented around 2010, when new vehicles had to meet the standards before they could be sold. For car owners, this meant that vehicles needed more efficient engines and catalytic converter technology to reduce pollution. My personal driving experience tells me that China IV vehicles emit less than the previous China III vehicles, making them less irritating to the nose when driving on the street and easier to pass annual inspections. In the used car market today, China IV vehicles are still popular, but some major cities like Beijing and Shanghai restrict high-emission vehicles from entering urban areas, so it's important to pay attention to the upgraded standards when buying a car. Protecting the environment starts with small actions, and choosing such vehicles can reduce the risk of smog. Daily maintenance is also simple, just using regular fuel and conducting periodic exhaust checks. In the long run, it can lower the probability of health issues, making it worth everyone's attention and promotion.
