What type of vehicles use urea?
2 Answers
Urea is generally used in diesel vehicles. Below are specific details about urea usage in diesel vehicles: 1. Urea is primarily used to reduce harmful nitrogen oxides in exhaust gases into nitrogen and water. 2. The main harmful substances in diesel vehicle exhaust are nitrogen oxides and particulate matter. While particulate emissions can be reduced through technological means within the engine, nitrogen oxides remain predominant in the exhaust. By injecting urea into the exhaust after-treatment device, the urea decomposes into ammonia at high temperatures. Under the action of a catalyst, it reacts with nitrogen oxides to produce harmless nitrogen and water. This device is called the SCR (Selective Catalytic Reduction) after-treatment system. 3. Vehicles are equipped with a dedicated urea tank, and urea is consumed whenever the vehicle is running. Therefore, it needs to be replenished regularly. Typically, about 4 liters of urea are consumed per 100 liters of diesel fuel. The exact consumption rate depends on factors such as engine displacement, model, manufacturer, etc. Different road conditions and load capacities can also affect urea consumption rates.
Urea is primarily used in modern diesel vehicles to reduce harmful emissions. As someone who enjoys studying automotive technology, I know these vehicles typically feature an SCR system, which stands for Selective Catalytic Reduction. Urea solution, also known as AdBlue or automotive urea, is injected into the exhaust pipe to convert nitrogen oxides into harmless substances. Compatible models include many European brands like Volkswagen TDI and Audi diesel vehicles, as well as models such as the Ford F-Series trucks and diesel SUVs like the Toyota Land Cruiser. Given the strict current emission standards like China VI, failing to use urea will result in non-compliant exhaust. Refilling isn’t frequent—on average, once every 5,000 to 10,000 kilometers is sufficient, with costs typically around a few dozen yuan per bottle. Neglecting it may lead to speed limitations or even failure to start, so it’s wise to consider SCR configurations when choosing a vehicle. Regular maintenance ensures prolonged engine life and a more worry-free driving experience.
