What are the engine emission standards?
2 Answers
National automobile emission standards refer to the harmful gases emitted from vehicle exhaust, including CO (carbon monoxide), HC + NOx (hydrocarbons and nitrogen oxides), and PM (particulate matter, soot). Additional information: 1. Vehicle exhaust: Vehicle exhaust emissions primarily occur between 0.3 meters and 2 meters above ground, posing severe health risks to humans. The most harmful components include carbon monoxide, hydrocarbons, nitrogen oxides, and solid suspended particles. 2. China III (Ⅲ) emission standards: According to Announcement No. 5 of 2006 by the State Environmental Protection Administration, titled 'Announcement on the Release of New Motor Vehicle Models and Engine Types Meeting the National Phase II and Phase III Emission Limits for Motor Vehicles,' the China III standard mainly applies to light-duty gasoline and diesel vehicles under 3.5 tons, equivalent to the Euro III standard. The nationwide implementation date was July 1, 2007. 3. China IV (Ⅳ) emission standards: 'Limits and Measurement Methods for Emissions from Light-Duty Vehicles' was issued by the Ministry of Environmental Protection on April 15, 2005. Gasoline vehicles began compliance on July 1, 2010, while diesel vehicles were implemented by vehicle type and region. The final nationwide implementation date for diesel vehicles under the China IV standard was July 2013. 4. China V (Ⅴ) emission standards: 'Limits and Measurement Methods for Emissions from Light-Duty Vehicles' was announced by the Ministry on September 17, 2013. Starting January 1, 2018, all motor vehicles nationwide fully implemented the China V emission standard.
Emission standards for engines are essentially regulations that control the exhaust pollutants from vehicles, such as limiting the emissions of harmful substances like carbon monoxide and nitrogen oxides. The government introduced these standards to reduce air pollution and protect our health. I have a deep personal understanding of this from my daily driving experience. I remember a few years ago when black smoke from gasoline car exhaust pipes went unchecked, but now the China 6 standard is very strict. If a vehicle fails the annual inspection, you have to spend a lot of money repairing the catalytic converter or fuel injectors, otherwise, you won't be allowed on the road. After switching to a compliant vehicle, I've noticed the city air is much fresher, which saves money and is better for the environment. I recommend regular maintenance and using high-quality fuel to better maintain the engine, extend its lifespan, and avoid exceeding standards. Additionally, standards vary by region. Europe and the U.S. adopted stricter Euro standards earlier, and China has been catching up closely since China 5. If your vehicle exceeds the standards and fails inspection, the impact can be significant, so everyone should pay attention.
