DPF / EGR / AdBlue Servis
We offer professional maintenance, repair and software solutions for emission systems in diesel vehicles.
What is a DPF (Diesel Particulate Filter)?
A DPF is a filter located in the exhaust system of diesel vehicles that traps particulate matter (soot). Due to increasingly strict emission standards, it has become mandatory in all diesel vehicles today.
How Does It Work?
As exhaust gases pass through the porous structure of the DPF, carbon particles are trapped. When the filter reaches a certain saturation level, the ECU automatically initiates the regeneration process. During this process, the exhaust gas temperature is raised to 600-650°C to burn off the accumulated soot.
Causes of DPF Clogging
- Short-distance driving: Regeneration cannot be completed in constant stop-and-go city traffic.
- Low-quality fuel: Fuels with high sulfur content shorten the filter lifespan.
- Prolonged idling: The engine runs at low temperatures, preventing regeneration.
- Wrong engine oil: Oils not compatible with DPF accelerate filter clogging.
- Faulty sensors: Pressure or temperature sensor failures can prevent regeneration.
EGR (Exhaust Gas Recirculation) System
The EGR system sends a portion of the exhaust gas back to the intake manifold, lowering the temperature in the combustion chamber. This keeps NOx (nitrogen oxide) emissions under control.
EGR Malfunction Symptoms
- Rough and irregular engine operation
- Increased fuel consumption
- Engine power loss
- Vibration and misfiring
- Black or excessive smoke
- Check engine light on
The EGR valve becomes clogged or fails over time due to soot buildup. At Forged ECU, we offer maintenance, cleaning, and software solutions for your EGR system when needed.
AdBlue (SCR) System
AdBlue is a solution consisting of 32.5% purified urea and 67.5% demineralized water. It is used together with the SCR (Selective Catalytic Reduction) system in diesel vehicles to comply with Euro 6 emission standards.
How Does AdBlue Work?
AdBlue is injected into the exhaust gas to initiate a chemical reaction in the SCR catalyst. As a result of this reaction, harmful NOx gases are converted into harmless nitrogen (N2) and water vapor (H2O). It reduces NOx emissions by an average of 90%.
AdBlue System Malfunctions
Injector Failure
Clogging or failure of the AdBlue injector is the most common issue.
Pump Failure
Failure of the AdBlue supply pump disables the system.
Quality Sensor
NOx or quality sensor failures cause false AdBlue warnings.
Freezing Issue
AdBlue freezes at -11.5°C. Heating system failure causes problems during winter months.
Our Forged ECU Solutions
At Forged ECU, we offer professional solutions for issues with DPF, EGR and AdBlue systems:
- DPF cleaning and regeneration: Professional cleaning of clogged filters
- EGR maintenance and cleaning: Cleaning of soot-clogged EGR valves
- AdBlue system repair: Resolving injector, pump and sensor issues
- Software solutions: ECU software intervention for faulty systems
- Fault diagnosis: Comprehensive fault detection with professional diagnostic equipment
Frequently Asked Questions
How can you tell if the DPF is clogged?
Check engine light, power loss, increased fuel consumption and excessive smoke from the exhaust are the most common symptoms of DPF clogging. In some vehicles, a DPF warning light appears on the dashboard.
How often should the EGR valve be cleaned?
Depending on driving conditions, EGR valve inspection and cleaning is recommended at intervals of 60,000 - 100,000 km.
How often should AdBlue be refilled?
AdBlue consumption varies depending on vehicle usage. Generally, approximately 1-1.5 liters of AdBlue is consumed per 1,000 km. The vehicle will alert you when it is time to refill.
Will the vehicle pass inspection after software intervention?
At Forged ECU, we take your vehicle's inspection requirements into consideration for all procedures. Contact us for detailed information.