AdBlue Dosing Pump Actros MP4/MP5

The AdBlue (dosing module) with code OE A0001405339 fitted on Mercedes Actros MP4/MP5 is the metering pump of the SCR system responsible for the controlled injection of the urea solution into the exhaust section.

In the SCR system of the Actros MP4/MP5, the dosing module represents the final element of the metering circuit: it receives the fluid already handled by the feed module and injects it into the exhaust in quantities calculated by the engine and aftertreatment strategy. Its function is therefore closely linked to NOx emission control and the correct operation of the SCR catalyst.

Technical features

• Dosing module meters and injects the fluid into the exhaust
• Component belonging to the SCR system for the reduction of nitrogen oxides
• Module dedicated to the controlled dosing of the AdBlue solution into the exhaust
• Operates in combination with the SCR management ECU and the AdBlue feed module
• Installed on the exhaust aftertreatment line
• Designed to handle urea quantities calculated according to the engine operating conditions
• Associated with Mercedes platforms with engines from the OM471 family
• Part of a system that also includes feed module, AdBlue injector, tank unit and urea filter

DIPA can intervene to overhaul these components thanks to its experience and expertise.

Functionality

• Receives AdBlue from the feed circuit
• Manages the dosing of the required quantity based on the SCR system's request
• Injects the fluid into the exhaust section in a controlled manner
• Contributes to the conversion of NOx inside the SCR catalyst
• Works in coordination with engine management and emissions control
• Enables compliance with the Euro 6 anti-pollution strategy
• Directly affects the catalytic conversion efficiency of the SCR system

Model applications

• Mercedes-Benz Actros MP4/MP5

Typical faults

• Pump blockage/irregular dosing
• Leaks from the module body or fittings
• Warning lights on the dashboard

Final conclusions

In the Mercedes Actros MP4/MP5 (OE code A0001405339), the component is the AdBlue dosing element 'dosing module', i.e. the SCR dosing module. This component's task is to precisely introduce the urea solution into the exhaust section to allow the correct reduction of NOx.

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