Why Do Vehicles Need to Burn Urea?

[LeVictoria]

Vehicles burn urea for the following reasons: to meet emission standards, as adding urea can reduce carbon oxides in exhaust gases and lower pollutant emissions. The consequences of not adding urea are: 1. Exceeding emission limits, causing environmental pollution; 2. Chemicals in the vehicle's system may oxidize, leading to clogged urea injectors and rendering the entire system inoperable; 3. Reduced vehicle power. The functions of urea are: treating exhaust gases to reduce pollutants, optimizing engine performance, and improving fuel efficiency. Reasons for urea warning light activation include: 1. Low urea pressure with high urea consumption; 2. Insufficient power due to excessively high or low urea consumption; 3. Instrument cluster malfunction.

[VonWalter]

I've been studying automotive technology for years. The reason cars use urea is mainly because diesel engines emit too much nitrogen oxides (NOx), which pollutes the environment and is unhealthy. Modern diesel vehicles are equipped with this system called SCR, which stands for Selective Catalytic Reduction. When the urea solution is injected into the exhaust pipe, it reacts with those harmful emissions and turns them into harmless nitrogen and water. This thing works wonders, reducing NOx emissions by up to 80%. Environmental regulations are getting stricter, like the Euro emission standards that mandate all new diesel vehicles must be equipped with SCR. If you forget to add urea, the car will trigger a warning and limit speed, making it crawl like a snail. Refilling AdBlue solution costs just a few dozen yuan and can be done at gas stations, ensuring clean air and compliant driving.

[VonHenry]

As a daily driver of a diesel pickup truck, why do I need to use urea? It's all because of environmental regulations. Liquids like AdBlue, if not added to the system, will trigger a warning light in the vehicle. Once, I forgot to refill it during a long trip, and the engine went into a speed limit mode, forcing me to crawl along—super annoying. Its function is simple: it's sprayed into the exhaust to break down pollutant particles, helping to protect air quality. Think about it—less smog in big cities means easier breathing, so this small investment is worth it. Every time I fill up with gas, I just grab a bottle of AdBlue and pour it in. No professional tools needed; it's a DIY job that takes ten minutes, saving both hassle and money.

[DiHaven]

I adhere to the concept of environmental protection and believe that using urea in vehicles is a necessary measure. Diesel emissions contribute to atmospheric pollution and pose health hazards. The urea system, called SCR, simply converts nitrogen oxides in exhaust gases into harmless substances. This not only complies with global standards but also helps prevent acid rain. Regularly adding AdBlue can maintain the system, and everyone can participate in environmental protection.