Where is the automotive urea placed in the vehicle?

[MacGavin]

Automotive urea is filled in a dedicated urea storage tank, which is located near the fuel tank. The reason for adding urea to diesel vehicles is mainly to reduce exhaust emissions, as the exhaust from diesel engines primarily consists of nitrogen oxides and carbon particles. Excessive nitrogen oxide concentrations can affect human pulmonary function and the central nervous system. Automotive urea is an essential additive for the SCR (Selective Catalytic Reduction) system. The SCR system includes a urea tank and an SCR catalytic reaction tank. The operating process is as follows: when nitrogen oxides are detected in the exhaust pipe, the urea tank automatically sprays diesel exhaust fluid. The diesel exhaust fluid and nitrogen oxides undergo a redox reaction in the SCR catalytic reaction tank, producing non-polluting nitrogen and water vapor, which are then discharged.