{"id":5037,"date":"2025-10-10T10:29:22","date_gmt":"2025-10-10T03:29:22","guid":{"rendered":"https:\/\/blueone.vn\/?p=5037"},"modified":"2025-10-11T08:42:29","modified_gmt":"2025-10-11T01:42:29","slug":"vi-sao-xe-tai-can-su-dung-nuoc-ure-de-dat-chuan-khi-thai","status":"publish","type":"post","link":"https:\/\/www.blueone.vn\/en\/vi-sao-xe-tai-can-su-dung-nuoc-ure-de-dat-chuan-khi-thai\/","title":{"rendered":"Why do trucks need to use urea to meet emission standards?"},"content":{"rendered":"

NOx emissions<\/strong> \u2013 the major problem with diesel engines<\/h2>\n

\"V\u00ec<\/p>\n

Diesel trucks are renowned for their high towing capacity, durability over long distances, and fuel efficiency. However, these advantages come with high emissions, particularly NOx (Nitrogen Oxides). These gases can cause acid rain, air pollution, and directly impact human health, especially in densely populated urban areas.<\/p>\n

Given the increasingly serious pollution situation, international emission standards \u2013 from Euro 4, Euro 5 to Euro 6 \u2013 require vehicles to reduce NOx emissions to extremely low levels. For long-haul trucks, meeting emission standards is no longer an option but a mandatory requirement for registration and legal operation.<\/p>\n

Urea water \u2013 the key to SCR systems.<\/h2>\n

How does the SCR system operate?<\/strong><\/p>\n

To reduce NOx emissions, many newer trucks are equipped with SCR (Selective Catalytic Reduction) systems. This is an advanced exhaust gas treatment technology that uses chemical reactions to convert toxic gases into harmless substances. In this mechanism, urea plays a crucial role.<\/p>\n

When injected into hot exhaust gases, the urea solution decomposes to produce ammonia (NH\u2083). The ammonia then reacts with NOx, converting it into nitrogen (N\u2082) and water vapor (H\u2082O), which is completely environmentally safe. Thanks to this mechanism, the SCR system can reduce NOx emissions by up to 80\u201390%, helping trucks meet Euro standards while maintaining operational efficiency.<\/p>\n

Why can't trucks skip urea?<\/h2>\n
\"Why
Why can't trucks skip urea?<\/em><\/figcaption><\/figure>\n

Modern trucks, especially those carrying heavy loads, operate continuously on long routes. Without urea, the SCR system becomes almost useless. Sensors will constantly report errors, and some vehicles may even reduce power or limit speed to protect the engine.<\/p>\n

Furthermore, not using a standard solution can cause the SCR catalytic converter to fail prematurely, nozzles to become clogged, and NOx sensors to malfunction. The cost of repairing or replacing these parts is often many times higher than using standard urea solution from the start.<\/p>\n

This shows that, for trucks, urea solution is not an option but a mandatory operating requirement.<\/p>\n

Urea water and AdBlue \u2013 key points to understand.<\/h2>\n

Many people confuse urea water with AdBlue. Essentially, AdBlue\u00ae is the trade name for a urea water solution that meets European standards. All AdBlue products are urea water, but not all urea water is AdBlue.<\/p>\n

Many commercially available solutions, whether adulterated or diluted, are ineffective in SCR systems and can damage sensors or catalysts. Therefore, drivers and transport companies need to choose solutions that meet ISO 22241 standards, ensuring the correct urea content, clean deionized water, and no metal impurities.<\/p>\n

See more: Products Urea<\/strong><\/a> meet standards<\/em><\/p>\n