Exhaust-gas recirculation

What is Exhaust-gas recirculation?

Exhaust-gas recirculation definition and meaning on Dictionary terms:
noun Automotive.
a method of returning part of the exhaust gases to an engine by means of a valve (EGR valve) in order to reduce the combustion temperature, which leads to a reduction in the formation of pollutants. Abbreviation: EGR

 

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