What is the consumption ratio of automotive urea to fuel?

[DelGabrielle]

The consumption ratio of automotive urea to fuel is 100:5. Introduction to automotive urea: Automotive urea is used in diesel engines. It is a liquid applied in SCR (Selective Catalytic Reduction) technology to reduce nitrogen oxide pollution in diesel vehicle exhaust. Its composition consists of 32.5% high-purity urea and 67.5% deionized water. Function of automotive urea: The main harmful substances in diesel vehicle exhaust are nitrogen oxides and particulates. Particulate emissions can be reduced through technical means inside the engine, leaving mainly nitrogen oxides in the exhaust. By injecting urea into the exhaust after-treatment device, the urea decomposes into ammonia at high temperatures, which reacts with nitrogen oxides under the action of a catalyst to produce harmless nitrogen and water.