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Automotive glossary: What is an Exhaust Gas Recirculation? (Abbr.: EGR)

Definition of Exhaust Gas Recirculation: In order to comply legal waste gas norms, and partially for reducing the fuel consumption, an exhaust gas recirculation is implemented in many diesel and petrol engines. At this, a part of the accruing waste gas is fed into the inlet area again, so that the mixture for the combustion contains a certain portion of waste gas at the outset, which leads to a slower combustion, therewith to a lower combustion temperature and therefore to less pollutants.

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