What is the exhaust emission standard?
1 Answers
Exhaust emission standards are set at 4%. Below is an introduction to the relevant content: 1. Establishment of standards: Automobile exhaust emission standards are quality requirements for harmful substances emitted by vehicles, such as carbon monoxide, hydrocarbons, nitrogen oxides, and particulate matter, aimed at reducing the production of harmful gases and encouraging automobile manufacturers to improve their technologies. Both Europe and the United States have established relevant standards, with Mainland China primarily referencing European standards. 2. Air pollution: Automobile exhaust is another major factor in air pollution. It contains carbon monoxide, nitrogen oxides, and other solid particles that adversely affect human health, especially leaded gasoline, which poses even greater harm to humans. Different vehicles also emit different odors. Automotive repair experts note that normal exhaust should be colorless and odorless, whereas exhaust of different colors and smells may indicate that the vehicle is experiencing some malfunctions.