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What is the emission standard for 2005 vehicles in China?

1 Answers

FernandoDella

07/29/25 1:52pm

2005 vehicle emission standards in China are National II and National III. Relevant information: 1. Meaning of emission standards: Refers to the national standards for motor vehicle pollutant emissions at various stages, implemented to enforce environmental protection strategies. 2. Pollutants: Carbon monoxide (CO), hydrocarbons (HC), nitrogen oxides (NOX), and particulate matter (PM), etc. 3. Causes of generation: The reasons for harmful gas production vary. CO is an intermediate product of incomplete fuel oxidation, which occurs when oxygen is insufficient. Rich fuel mixture and uneven mixture distribution increase CO content in exhaust. HC represents unburned fuel components, caused by uneven mixture distribution or cold combustion chamber walls leading to incomplete combustion. NOX is produced during fuel combustion. PM is generated when fuel burns under oxygen-deficient conditions.

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