company news about What does an AdBlue pump do?

The AdBlue pump is an important part of the diesel vehicle exhaust aftertreatment system, and mainly undertakes the following core functions:

Accurate metering and delivery of urea solution‌
The AdBlue pump accurately calculates and delivers the required amount of urea solution to the exhaust system through built-in sensors and control systems based on real-time data from the engine control unit (ECU) (such as speed, fuel injection volume, etc.).

Atomization injection and exhaust gas treatment‌
The pump atomizes the urea solution through a gas pressurization device and sprays it into the high-temperature exhaust gas flow, causing urea (NH₂CONH₂) to decompose into ammonia (NH₃), which reacts with nitrogen oxides (NOx) to undergo catalytic reduction reactions and eventually converts into harmless nitrogen (N₂) and water (H₂O).

System pressure maintenance and anti-crystallization‌
By maintaining the urea pipeline pressure stable, the injection interruption or pipeline crystallization blockage due to insufficient pressure can be prevented. Some optimized pump body structures can also reduce the risk of residual liquid solidification.

Coordinated emission control with ECU ‌
As the core executive component of SCR (selective catalytic reduction) technology, the AdBlue pump is directly controlled by ECU commands to ensure that the emission treatment process matches the engine operating conditions in real time and meets environmental protection regulations.

Maintenance precautions ‌:

It is necessary to regularly replenish automotive urea that meets ISO 22241 standards to avoid damage to the pump body and nozzle due to the use of inferior or agricultural urea;
When the instrument prompts that the AdBlue level is low, it must be refilled in time, otherwise it may trigger the vehicle speed limit or failure to start protection mechanism.

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