Regenerated EGR exhaust gas coolers – an economical way to restore the efficiency of the exhaust gas recirculation system

Regenerated EGR exhaust gas coolers – an economical way to restore the efficiency of the exhaust gas recirculation system


Does the radiator get dirty and if so, how can you clean it yourself? Can damaged EGR coolers be regenerated? In this article, we answer these questions, trying to help our readers restore the efficiency of the exhaust gas recirculation system as effectively and economically as possible.



EGR cooler – what is it and what are its functions?



The EGR cooler, i.e. exhaust gas recirculation cooler, is an important element of the system aimed at improving engine efficiency and reducing emissions of harmful substances. It cooperates with the EGR valve, which is responsible for reintroducing part of the exhaust gases into the combustion chamber. The function of the cooler is to reduce the temperature of exhaust gases before returning them to the engine.

In modern vehicle designs, especially those that meet stringent nitrogen oxide emission standards, the EGR cooler becomes an inseparable element of the exhaust system. By cooling exhaust gases before they return to the combustion chamber, the cooler helps to further reduce nitrogen oxide emissions by up to 70%. Although this is an effective solution, not all drivers accept it, given the potential problems associated with EGR valve failure and the need for regular cleaning of both the valve itself and the EGR cooler.



When is the EGR cooler suitable for cleaning?



Determining how often to clean the EGR cooler can be a challenge. You should pay attention to several factors that influence the level of dirt.

  • The first important aspect is the quality of the fuel used, which is particularly important, especially for diesel engines, especially when using fuels with the addition of biocomponents.
  • Another factor is the way the vehicle is operated, because the EGR cooler becomes dirty mainly at certain stages of engine operation.
  • It is important to clean the radiator regularly because the dirtier the radiator is, the faster soot will accumulate on it.

Expert recommendations suggest that under optimal conditions, cleaning of the EGR cooler should be carried out approximately every 100,000 kilometers. In case of operation in more difficult conditions, this frequency should not exceed 50,000 kilometers.



EGR cooler regeneration – why is it beneficial?



Thanks to the regeneration of the EGR cooler, it is possible to restore the optimal efficiency of this element, which in turn translates into an effective reduction in exhaust gas temperature. Their temperature is crucial in the exhaust gas recirculation process, reducing nitrogen oxide emissions.

Regeneration of the EGR cooler not only has a significant impact on the efficiency of the exhaust gas recirculation system, but also brings economic benefits compared to replacing it with a new element. Compared to the costly replacement of a new radiator, regeneration becomes an advantageous solution, providing financial savings while maintaining high efficiency of the EGR system. This approach not only supports environmental protection, but also makes keeping your vehicle in good condition more accessible and sustainable.

Cleaning the EGR cooler – how is it done?

Cleaning the EGR cooler without dismantling it from the system is not always possible. The effects of this method depend on access to the radiator, which may be limited by pipes connected on both sides. If the exhaust gas recirculation system allows easy removal of the radiator and it is not completely contaminated, this method may be effective.

In such a case, it is necessary to use a special cleaning agent intended for aluminum and pressurized water. Repeated applications of the cleaning agent and thorough rinsing with water usually produce satisfactory results. However, it is worth remembering that the usefulness of all types of brushes or other tools may be limited, and the effectiveness of this method depends on the degree of dirt on the radiator.

How to recognize a fault with the EGR exhaust gas cooler?

The following symptoms may indicate a fault with the EGR exhaust gas cooler:

  • decrease in engine performance;
  • increased exhaust emissions;
  • uneven engine operation;
  • excessive fuel consumption;
  • engine error codes;
  • black sediment around the EGR cooler.

If these symptoms occur, it is recommended to consult a professional mechanic or use car diagnostics.

Regenerated EGR exhaust gas coolers in the Arcoore offer

If the EGR exhaust gas cooler is defective in the vehicles in your fleet, you can choose regenerated components from our offer. The website offers regenerated EGR coolers, compatible with trucks of various brands, suitable for vehicles of older and younger models, meeting exhaust emission standards from Euro 4 to Euro 6.

Each regenerated EGR exhaust gas cooler is a guarantee of full technical and operational efficiency

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