Why Do Large Vehicles Need to Add Urea?
3 Answers
Large vehicles need to add urea because urea is a necessary consumable in SCR technology. The following is an introduction to the related content: SCR Technology: It is a must-have for large trucks. SCR technology is a technology created by engine manufacturers to meet the regulations of environmental protection departments. Vehicles That Use Urea: Urea is added for diesel engines because diesel engines emit nitrogen oxide pollutants during operation. These pollutants are harmful to the atmosphere and human health. Long-term exposure to such pollutants can lead to respiratory diseases. To reduce the harm of these pollutants to the atmosphere and humans, urea is used. This involves a catalytic reaction where urea reacts with the nitrogen oxides emitted by diesel engines. A chemical reaction occurs, converting the nitrogen oxides into nitrogen and water, which are harmless to the atmosphere and human health.
I've been driving long-distance transport for almost 25 years, and diesel vehicles have developed really fast over these years. In the past, our trucks emitted heavy black smoke, polluted the air, and made a lot of noise, often getting stopped by traffic police on the road. Later, there was a requirement to add this thing called urea, officially known as AdBlue or diesel exhaust fluid, specifically designed to reduce harmful emissions. It's installed in the exhaust system and, through a chemical reaction, converts nitrogen oxides into harmless nitrogen and water vapor, significantly reducing pollution. If you don't add it, the engine warning light tends to come on, power drops, and fuel consumption increases. I have to check and refill it every 5,000 to 6,000 kilometers. A bucket costs just over ten bucks, which is very cheap, avoiding thousands in repair costs if the truck breaks down. With proper maintenance of the urea system, the truck runs much smoother, and I've never had any issues during inspections. Overall, it's a good improvement—not only environmentally friendly but also saves money and hassle.
As an environmental enthusiast, I have always been concerned about air pollution issues. Large vehicles emit significant amounts of nitrogen oxides, which can cause health hazards such as smog and acid rain, and also contribute to global warming. Adding urea solution to the exhaust system facilitates a catalytic reaction, breaking it down into ammonia to neutralize NOx, converting it into nitrogen and water, thereby reducing toxic emissions and protecting the ozone layer. This technology originated from international environmental standards and has become widespread. Individual actions can reduce noise and benefit community air quality. I recommend drivers develop the habit of regularly adding qualified brands to avoid secondary pollution. With the collective efforts of society, the restoration of blue skies and white clouds will happen faster, and every contribution is valuable.
