What Causes a Diesel Vehicle Not to Consume Urea?

[OAriel]

It may be due to the SCR system not functioning properly. Here are the relevant explanations: 1. Working Principle: When nitrogen oxides are detected in the exhaust pipe, the urea tank automatically sprays diesel exhaust fluid (DEF). The DEF and nitrogen oxides undergo a redox reaction in the SCR catalytic converter, producing non-polluting nitrogen and water vapor that are then expelled. 2. Automotive Urea: The technical name is diesel exhaust fluid (DEF), used in diesel engines. There is an integrated chip control between the engine and the urea tank, which determines the amount of DEF to inject based on the engine's power output. Currently, if the system is clogged and unable to spray DEF, it will result in reduced engine power and performance.