A0001401578 Urea Pump is a high-precision AdBlue metering and conveying device specially developed for the SCR (Selective Catalytic Reduction) post-treatment system of commercial vehicles. It is mainly adapted to high-end commercial vehicle series such as Mercedes-Benz. It is an indispensable core component for vehicles to achieve compliance with the standards of Euro VI and China VI emissions. Its core function is to accurately receive instructions from the engine's electronic control unit (ECU), pressurize and precisely measure the urea water solution, and then atomize and spray it into the exhaust pipe. It undergoes an efficient reduction reaction with nitrogen oxides (NOx) in the catalytic converter to produce harmless nitrogen and water. This ensures that the exhaust emissions are in compliance while also taking into account the engine's power output and fuel economy.