Exhaust gas recirculation (EGR) is an exhaust aftertreatment method used in combustion engines, particularly diesel engines, to reduce the emission of nitrogen oxides (NOx).
During engine operation, a portion of the exhaust gases from the exhaust are recirculated into the engine’s intake tract. These exhaust gases thereby cool down the combustion mixture. Due to the lower combustion temperature, fewer nitrogen oxides are produced, which are considered air pollutants and greenhouse gases.
What problems does a defective EGR valve cause?
The issue with the EGR valve, however, is that soot and other particles often deposit due to the exhaust gases, which can then lead to a clogged EGR valve, power loss, increased fuel consumption, and even engine damage.
What does deactivating the EGR valve accomplish?
- Improved engine performance
- Reduction in fuel consumption
- Extended engine lifespan
- Avoidance of problems with the EGR system
For these reasons, some vehicle owners choose to deactivate the EGR system to save costs in case of an expensive repair.
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