What are the effects of a truck not using urea?

[AddysonLynn]

Here are the consequences of a truck running out of urea: 1. Impact on the vehicle: If urea is not injected, nitrogen oxide emissions will be worse than those of a National III vehicle. Prolonged absence of urea circulation can lead to crystallization and blockage or high-temperature damage in the nozzle, pipelines, and urea pump, making repairs very expensive. Not adding urea, adding water, or diluting urea with water will trigger the emission warning light, limit torque, and make the vehicle significantly underpowered. However, it does not affect the engine's lifespan and performance, the catalyst carrier, or the exhaust temperature and NOx sensors. 2. Impact on fuel consumption: Manufacturers must input urea sensor data into the engine control unit (ECU) when producing National IV engines. Once the sensor data indicates that the urea is depleted or absent, the ECU will adjust the engine's operating conditions, making the engine feel underpowered. This lack of power requires more throttle input, naturally increasing fuel consumption. Even so, the engine still cannot operate at full load capacity.