What Causes a Vehicle Not to Consume Urea?
1 Answers
It may be that the vehicle's SCR system is not functioning. Due to environmental protection agencies in various countries proposing further reductions in nitrogen oxide pollutants emitted by diesel engines, engine manufacturers have begun using SCR technology to meet the requirements of environmental agencies. The addition of urea in vehicles is intended to treat diesel engine exhaust. The working principle 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 that are then emitted.