How to Identify the National Emission Standard of a Truck?
3 Answers
Trucks can be identified for their national emission standards through the following methods: 1. Check the certificate of conformity: The registered emission standard is indicated on the certificate. 2. Inquiry at the vehicle management office: You can take the vehicle registration certificate to the vehicle management office and ask the staff to check. 3. Differentiate by engine type. Different engines have different emissions. A truck with a mechanical fuel injection pump without turbocharging meets the National I emission standard; one with a mechanical fuel injection pump and turbocharging meets the National II standard; one with electronic fuel injection and turbocharging meets the National III standard; and one with electronic fuel injection, turbocharging, and an exhaust gas treatment system meets the National IV standard.
Last time when helping a friend inspect a used truck, I taught him a few tricks: The most reliable method is to directly check the supplementary page of the vehicle license, the one with the green label that has 'China IV' or 'China V' marked on it. If there's no documentation, pry open the door to check the B-pillar nameplate or the engine compartment label, where the production date is the key clue. Most vehicles before 2013 are China III, while those after 2017 are generally China V or above. However, for those of us running routes in the northwest, extra caution is needed. Some stock vehicles might be sold with older emission labels, so it's best to scan the VIN code with a phone to check the records on the environmental protection website. Remember to bring a strong flashlight to inspect the embossed stamp on the label to avoid being scammed.
I've driven heavy trucks for a decade, and fleet inspections rely on three key steps: first, present the vehicle license to check the environmental page, then inspect the door seams for the silver emission label. For coal trucks that frequently traverse mountain roads and lose their labels, simply report the license plate at the inspection station window to verify records. By the way, China III vehicles have coarse filters on their exhaust pipes, China IV models feature an additional urea tank at the rear, and China V vehicles have an emission light on the dashboard. Veteran drivers also taught me to check the tenth digit of the chassis number—'K' indicates China IV, 'L' means China V, a trick particularly useful for used car inspections.
