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
reference: https://www.dictionary.com/browse/exhaust-gas-recirculation
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