Why Do Vehicles Use Urea and How to Use It?

[LaElliana]

Vehicles use urea primarily to reduce harmful nitrogen oxides in the exhaust into nitrogen and water. There is a dedicated urea tank in the vehicle where the urea is stored. Below is an introduction to the relevant content: 1. Diesel Vehicles: The main harmful substances in diesel vehicle exhaust are nitrogen oxides and particulates. Technical measures can reduce particulate emissions within the engine, leaving mainly nitrogen oxides in the exhaust. Urea is then injected into the exhaust after-treatment device. 2. Urea: Urea decomposes into ammonia at high temperatures, which reacts with nitrogen oxides in the presence of a catalyst to produce harmless nitrogen and water. This device is called the SCR after-treatment system.