What Does Vehicle Urea Mean?

[VonRonan]

Here is a detailed introduction to vehicle urea: 1. Function: The primary purpose of using urea in vehicles is to reduce harmful nitrogen oxides in the exhaust into nitrogen and water. 2. Principle: The main harmful substances in exhaust are nitrogen oxides and particulates. Technical measures can be employed within the engine to reduce particulate emissions, leaving mainly nitrogen oxides 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, the ammonia reacts with nitrogen oxides to produce harmless nitrogen and water. This device is called the SCR (Selective Catalytic Reduction) after-treatment system. 3. Urea consumption: Vehicles have a dedicated urea tank, and urea is consumed as long as the vehicle is running. Therefore, it is necessary to replenish it in a timely manner. Generally, about 4 liters of urea are consumed per 100 liters of diesel. The exact amount depends on factors such as engine displacement, model, manufacturer, etc. Different road conditions and loads can also affect urea consumption.